зеркало из https://github.com/mozilla/gecko-dev.git
11863 строки
456 KiB
C++
11863 строки
456 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "HTMLEditor.h"
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#include <algorithm>
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#include <utility>
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#include "HTMLEditUtils.h"
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#include "WSRunObject.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/CSSEditUtils.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/ContentIterator.h"
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#include "mozilla/EditAction.h"
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#include "mozilla/EditorDOMPoint.h"
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#include "mozilla/EditorUtils.h"
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#include "mozilla/InternalMutationEvent.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/OwningNonNull.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/RangeUtils.h"
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#include "mozilla/TextComposition.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/Unused.h"
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#include "mozilla/dom/AncestorIterator.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/HTMLBRElement.h"
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#include "mozilla/dom/RangeBinding.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/dom/StaticRange.h"
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#include "mozilla/mozalloc.h"
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#include "nsAString.h"
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#include "nsAlgorithm.h"
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#include "nsAtom.h"
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#include "nsCRT.h"
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#include "nsCRTGlue.h"
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#include "nsComponentManagerUtils.h"
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#include "nsContentUtils.h"
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#include "nsDebug.h"
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#include "nsError.h"
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#include "nsGkAtoms.h"
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#include "nsHTMLDocument.h"
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#include "nsIContent.h"
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#include "nsID.h"
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#include "nsIFrame.h"
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#include "nsINode.h"
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#include "nsLiteralString.h"
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#include "nsRange.h"
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#include "nsReadableUtils.h"
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#include "nsString.h"
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#include "nsStringFwd.h"
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#include "nsTArray.h"
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#include "nsTextNode.h"
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#include "nsThreadUtils.h"
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#include "nsUnicharUtils.h"
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// Workaround for windows headers
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#ifdef SetProp
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# undef SetProp
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#endif
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class nsISupports;
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namespace mozilla {
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using namespace dom;
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using StyleDifference = HTMLEditUtils::StyleDifference;
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enum { kLonely = 0, kPrevSib = 1, kNextSib = 2, kBothSibs = 3 };
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/********************************************************
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* first some helpful functors we will use
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********************************************************/
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static bool IsStyleCachePreservingSubAction(EditSubAction aEditSubAction) {
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switch (aEditSubAction) {
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case EditSubAction::eDeleteSelectedContent:
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case EditSubAction::eInsertLineBreak:
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case EditSubAction::eInsertParagraphSeparator:
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case EditSubAction::eCreateOrChangeList:
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case EditSubAction::eIndent:
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case EditSubAction::eOutdent:
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case EditSubAction::eSetOrClearAlignment:
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case EditSubAction::eCreateOrRemoveBlock:
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case EditSubAction::eMergeBlockContents:
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case EditSubAction::eRemoveList:
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case EditSubAction::eCreateOrChangeDefinitionListItem:
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case EditSubAction::eInsertElement:
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case EditSubAction::eInsertQuotation:
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case EditSubAction::eInsertQuotedText:
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return true;
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default:
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return false;
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}
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}
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class MOZ_RAII AutoSetTemporaryAncestorLimiter final {
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER;
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public:
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explicit AutoSetTemporaryAncestorLimiter(
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HTMLEditor& aHTMLEditor, Selection& aSelection,
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nsINode& aStartPointNode MOZ_GUARD_OBJECT_NOTIFIER_PARAM) {
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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MOZ_ASSERT(aSelection.GetType() == SelectionType::eNormal);
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if (aSelection.GetAncestorLimiter()) {
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return;
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}
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Element* root = aHTMLEditor.FindSelectionRoot(&aStartPointNode);
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if (root) {
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aHTMLEditor.InitializeSelectionAncestorLimit(*root);
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mSelection = &aSelection;
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}
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}
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~AutoSetTemporaryAncestorLimiter() {
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if (mSelection) {
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mSelection->SetAncestorLimiter(nullptr);
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}
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}
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private:
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RefPtr<Selection> mSelection;
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};
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template void HTMLEditor::SelectBRElementIfCollapsedInEmptyBlock(
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RangeBoundary& aStartRef, RangeBoundary& aEndRef);
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template void HTMLEditor::SelectBRElementIfCollapsedInEmptyBlock(
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RawRangeBoundary& aStartRef, RangeBoundary& aEndRef);
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template void HTMLEditor::SelectBRElementIfCollapsedInEmptyBlock(
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RangeBoundary& aStartRef, RawRangeBoundary& aEndRef);
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template void HTMLEditor::SelectBRElementIfCollapsedInEmptyBlock(
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RawRangeBoundary& aStartRef, RawRangeBoundary& aEndRef);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
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const RangeBoundary& aStartRef, const RangeBoundary& aEndRef);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
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const RawRangeBoundary& aStartRef, const RangeBoundary& aEndRef);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
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const RangeBoundary& aStartRef, const RawRangeBoundary& aEndRef);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
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const RawRangeBoundary& aStartRef, const RawRangeBoundary& aEndRef);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
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const RangeBoundary& aStartRef, const RangeBoundary& aEndRef,
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EditSubAction aEditSubAction);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
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const RawRangeBoundary& aStartRef, const RangeBoundary& aEndRef,
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EditSubAction aEditSubAction);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
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const RangeBoundary& aStartRef, const RawRangeBoundary& aEndRef,
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EditSubAction aEditSubAction);
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template already_AddRefed<nsRange>
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HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
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const RawRangeBoundary& aStartRef, const RawRangeBoundary& aEndRef,
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EditSubAction aEditSubAction);
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template EditorDOMPoint HTMLEditor::GetWhiteSpaceEndPoint(
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const RangeBoundary& aPoint, ScanDirection aScanDirection);
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template EditorDOMPoint HTMLEditor::GetWhiteSpaceEndPoint(
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const RawRangeBoundary& aPoint, ScanDirection aScanDirection);
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template EditorDOMPoint HTMLEditor::GetCurrentHardLineStartPoint(
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const RangeBoundary& aPoint, EditSubAction aEditSubAction);
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template EditorDOMPoint HTMLEditor::GetCurrentHardLineStartPoint(
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const RawRangeBoundary& aPoint, EditSubAction aEditSubAction);
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template EditorDOMPoint HTMLEditor::GetCurrentHardLineEndPoint(
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const RangeBoundary& aPoint);
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template EditorDOMPoint HTMLEditor::GetCurrentHardLineEndPoint(
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const RawRangeBoundary& aPoint);
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template Element* HTMLEditor::GetInvisibleBRElementAt(
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const EditorDOMPoint& aPoint);
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template Element* HTMLEditor::GetInvisibleBRElementAt(
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const EditorRawDOMPoint& aPoint);
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template nsIContent* HTMLEditor::FindNearEditableContent(
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const EditorDOMPoint& aPoint, nsIEditor::EDirection aDirection);
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template nsIContent* HTMLEditor::FindNearEditableContent(
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const EditorRawDOMPoint& aPoint, nsIEditor::EDirection aDirection);
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nsresult HTMLEditor::InitEditorContentAndSelection() {
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MOZ_ASSERT(IsEditActionDataAvailable());
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nsresult rv = TextEditor::InitEditorContentAndSelection();
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if (NS_FAILED(rv)) {
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NS_WARNING("TextEditor::InitEditorContentAndSelection() failed");
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return rv;
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}
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Element* bodyOrDocumentElement = GetRoot();
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if (NS_WARN_IF(!bodyOrDocumentElement && !GetDocument())) {
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return NS_ERROR_FAILURE;
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}
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if (!bodyOrDocumentElement) {
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return NS_OK;
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}
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rv = InsertBRElementToEmptyListItemsAndTableCellsInRange(
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RawRangeBoundary(bodyOrDocumentElement, 0u),
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RawRangeBoundary(bodyOrDocumentElement,
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bodyOrDocumentElement->GetChildCount()));
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if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
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return NS_ERROR_EDITOR_DESTROYED;
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}
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NS_WARNING_ASSERTION(
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NS_SUCCEEDED(rv),
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"HTMLEditor::InsertBRElementToEmptyListItemsAndTableCellsInRange() "
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"failed, but ignored");
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return NS_OK;
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}
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void HTMLEditor::OnStartToHandleTopLevelEditSubAction(
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EditSubAction aTopLevelEditSubAction,
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nsIEditor::EDirection aDirectionOfTopLevelEditSubAction, ErrorResult& aRv) {
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MOZ_ASSERT(IsEditActionDataAvailable());
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MOZ_ASSERT(!aRv.Failed());
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EditorBase::OnStartToHandleTopLevelEditSubAction(
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aTopLevelEditSubAction, aDirectionOfTopLevelEditSubAction, aRv);
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MOZ_ASSERT(GetTopLevelEditSubAction() == aTopLevelEditSubAction);
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MOZ_ASSERT(GetDirectionOfTopLevelEditSubAction() ==
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aDirectionOfTopLevelEditSubAction);
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if (NS_WARN_IF(Destroyed())) {
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aRv.Throw(NS_ERROR_EDITOR_DESTROYED);
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return;
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}
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if (!mInitSucceeded) {
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return; // We should do nothing if we're being initialized.
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}
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NS_WARNING_ASSERTION(
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!aRv.Failed(),
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"EditorBase::OnStartToHandleTopLevelEditSubAction() failed");
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// Remember where our selection was before edit action took place:
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if (GetCompositionStartPoint().IsSet()) {
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// If there is composition string, let's remember current composition
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// range.
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TopLevelEditSubActionDataRef().mSelectedRange->StoreRange(
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GetCompositionStartPoint(), GetCompositionEndPoint());
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} else {
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// Get the selection location
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// XXX This may occur so that I think that we shouldn't throw exception
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// in this case.
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if (NS_WARN_IF(!SelectionRefPtr()->RangeCount())) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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if (nsRange* range = SelectionRefPtr()->GetRangeAt(0)) {
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TopLevelEditSubActionDataRef().mSelectedRange->StoreRange(*range);
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}
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}
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// Register with range updater to track this as we perturb the doc
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RangeUpdaterRef().RegisterRangeItem(
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*TopLevelEditSubActionDataRef().mSelectedRange);
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// Remember current inline styles for deletion and normal insertion ops
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bool cacheInlineStyles;
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switch (aTopLevelEditSubAction) {
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case EditSubAction::eInsertText:
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case EditSubAction::eInsertTextComingFromIME:
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case EditSubAction::eDeleteSelectedContent:
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cacheInlineStyles = true;
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break;
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default:
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cacheInlineStyles =
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IsStyleCachePreservingSubAction(aTopLevelEditSubAction);
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break;
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}
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if (cacheInlineStyles) {
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nsCOMPtr<nsIContent> containerContent = nsIContent::FromNodeOrNull(
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aDirectionOfTopLevelEditSubAction == nsIEditor::eNext
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? TopLevelEditSubActionDataRef().mSelectedRange->mEndContainer
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: TopLevelEditSubActionDataRef().mSelectedRange->mStartContainer);
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if (NS_WARN_IF(!containerContent)) {
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aRv.Throw(NS_ERROR_FAILURE);
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return;
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}
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nsresult rv = CacheInlineStyles(*containerContent);
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if (NS_FAILED(rv)) {
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NS_WARNING("HTMLEditor::CacheInlineStyles() failed");
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aRv.Throw(rv);
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return;
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}
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}
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// Stabilize the document against contenteditable count changes
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Document* document = GetDocument();
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if (NS_WARN_IF(!document)) {
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aRv.Throw(NS_ERROR_FAILURE);
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return;
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}
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if (document->GetEditingState() == Document::EditingState::eContentEditable) {
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document->ChangeContentEditableCount(nullptr, +1);
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TopLevelEditSubActionDataRef().mRestoreContentEditableCount = true;
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}
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// Check that selection is in subtree defined by body node
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nsresult rv = EnsureSelectionInBodyOrDocumentElement();
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if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
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aRv.Throw(NS_ERROR_EDITOR_DESTROYED);
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return;
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}
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
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"HTMLEditor::EnsureSelectionInBodyOrDocumentElement() "
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"failed, but ignored");
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}
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nsresult HTMLEditor::OnEndHandlingTopLevelEditSubAction() {
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MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
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nsresult rv;
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while (true) {
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if (NS_WARN_IF(Destroyed())) {
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rv = NS_ERROR_EDITOR_DESTROYED;
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break;
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}
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if (!mInitSucceeded) {
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rv = NS_OK; // We should do nothing if we're being initialized.
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break;
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}
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// Do all the tricky stuff
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rv = OnEndHandlingTopLevelEditSubActionInternal();
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NS_WARNING_ASSERTION(
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NS_SUCCEEDED(rv),
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"HTMLEditor::OnEndHandlingTopLevelEditSubActionInternal() failied");
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// Perhaps, we need to do the following jobs even if the editor has been
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// destroyed since they adjust some states of HTML document but don't
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// modify the DOM tree nor Selection.
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// Free up selectionState range item
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if (TopLevelEditSubActionDataRef().mSelectedRange) {
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RangeUpdaterRef().DropRangeItem(
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*TopLevelEditSubActionDataRef().mSelectedRange);
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}
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// Reset the contenteditable count to its previous value
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if (TopLevelEditSubActionDataRef().mRestoreContentEditableCount) {
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Document* document = GetDocument();
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if (NS_WARN_IF(!document)) {
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rv = NS_ERROR_FAILURE;
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break;
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}
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if (document->GetEditingState() ==
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Document::EditingState::eContentEditable) {
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document->ChangeContentEditableCount(nullptr, -1);
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}
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}
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break;
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}
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DebugOnly<nsresult> rvIgnored =
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EditorBase::OnEndHandlingTopLevelEditSubAction();
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NS_WARNING_ASSERTION(
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NS_FAILED(rv) || NS_SUCCEEDED(rvIgnored),
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"EditorBase::OnEndHandlingTopLevelEditSubAction() failed, but ignored");
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MOZ_ASSERT(!GetTopLevelEditSubAction());
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MOZ_ASSERT(GetDirectionOfTopLevelEditSubAction() == eNone);
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return rv;
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}
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nsresult HTMLEditor::OnEndHandlingTopLevelEditSubActionInternal() {
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MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
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nsresult rv = EnsureSelectionInBodyOrDocumentElement();
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if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
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return NS_ERROR_EDITOR_DESTROYED;
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}
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
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"HTMLEditor::EnsureSelectionInBodyOrDocumentElement() "
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"failed, but ignored");
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switch (GetTopLevelEditSubAction()) {
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case EditSubAction::eReplaceHeadWithHTMLSource:
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case EditSubAction::eCreatePaddingBRElementForEmptyEditor:
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return NS_OK;
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default:
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break;
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}
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if (TopLevelEditSubActionDataRef().mChangedRange->IsPositioned() &&
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GetTopLevelEditSubAction() != EditSubAction::eUndo &&
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GetTopLevelEditSubAction() != EditSubAction::eRedo) {
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// don't let any txns in here move the selection around behind our back.
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// Note that this won't prevent explicit selection setting from working.
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AutoTransactionsConserveSelection dontChangeMySelection(*this);
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switch (GetTopLevelEditSubAction()) {
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case EditSubAction::eInsertText:
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case EditSubAction::eInsertTextComingFromIME:
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case EditSubAction::eInsertLineBreak:
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case EditSubAction::eInsertParagraphSeparator:
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case EditSubAction::eDeleteText: {
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// XXX We should investigate whether this is really needed because it
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// seems that the following code does not handle the whitespaces.
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RefPtr<nsRange> extendedChangedRange =
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CreateRangeIncludingAdjuscentWhiteSpaces(
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*TopLevelEditSubActionDataRef().mChangedRange);
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if (extendedChangedRange) {
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MOZ_ASSERT(extendedChangedRange->IsPositioned());
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// Use extended range temporarily.
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TopLevelEditSubActionDataRef().mChangedRange =
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std::move(extendedChangedRange);
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}
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break;
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}
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default: {
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RefPtr<nsRange> extendedChangedRange =
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CreateRangeExtendedToHardLineStartAndEnd(
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*TopLevelEditSubActionDataRef().mChangedRange,
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GetTopLevelEditSubAction());
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if (extendedChangedRange) {
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MOZ_ASSERT(extendedChangedRange->IsPositioned());
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// Use extended range temporarily.
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TopLevelEditSubActionDataRef().mChangedRange =
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std::move(extendedChangedRange);
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}
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break;
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}
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}
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// if we did a ranged deletion or handling backspace key, make sure we have
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// a place to put caret.
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// Note we only want to do this if the overall operation was deletion,
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// not if deletion was done along the way for
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// EditSubAction::eInsertHTMLSource, EditSubAction::eInsertText, etc.
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// That's why this is here rather than DeleteSelectionAsSubAction().
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// However, we shouldn't insert <br> elements if we've already removed
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// empty block parents because users may want to disappear the line by
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// the deletion.
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// XXX We should make HandleDeleteSelection() store expected container
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// for handling this here since we cannot trust current selection is
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// collapsed at deleted point.
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if (GetTopLevelEditSubAction() == EditSubAction::eDeleteSelectedContent &&
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TopLevelEditSubActionDataRef().mDidDeleteNonCollapsedRange &&
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!TopLevelEditSubActionDataRef().mDidDeleteEmptyParentBlocks) {
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nsresult rv = InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary(
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EditorBase::GetStartPoint(*SelectionRefPtr()));
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if (NS_FAILED(rv)) {
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NS_WARNING(
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"HTMLEditor::"
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"InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary() "
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"failed");
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return rv;
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}
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}
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// add in any needed <br>s, and remove any unneeded ones.
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nsresult rv = InsertBRElementToEmptyListItemsAndTableCellsInRange(
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TopLevelEditSubActionDataRef().mChangedRange->StartRef().AsRaw(),
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TopLevelEditSubActionDataRef().mChangedRange->EndRef().AsRaw());
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if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
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return NS_ERROR_EDITOR_DESTROYED;
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}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::InsertBRElementToEmptyListItemsAndTableCellsInRange()"
|
|
" failed, but ignored");
|
|
|
|
// merge any adjacent text nodes
|
|
switch (GetTopLevelEditSubAction()) {
|
|
case EditSubAction::eInsertText:
|
|
case EditSubAction::eInsertTextComingFromIME:
|
|
break;
|
|
default: {
|
|
nsresult rv = CollapseAdjacentTextNodes(
|
|
MOZ_KnownLive(*TopLevelEditSubActionDataRef().mChangedRange));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseAdjacentTextNodes() failed");
|
|
return rv;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// clean up any empty nodes in the selection
|
|
rv = RemoveEmptyNodesIn(
|
|
MOZ_KnownLive(*TopLevelEditSubActionDataRef().mChangedRange));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveEmptyNodesIn() failed");
|
|
return rv;
|
|
}
|
|
|
|
// attempt to transform any unneeded nbsp's into spaces after doing various
|
|
// operations
|
|
switch (GetTopLevelEditSubAction()) {
|
|
case EditSubAction::eInsertText:
|
|
case EditSubAction::eInsertTextComingFromIME:
|
|
case EditSubAction::eDeleteSelectedContent:
|
|
case EditSubAction::eInsertLineBreak:
|
|
case EditSubAction::eInsertParagraphSeparator:
|
|
case EditSubAction::ePasteHTMLContent:
|
|
case EditSubAction::eInsertHTMLSource: {
|
|
// TODO: Temporarily, WSRunObject replaces ASCII whitespaces with NPSPs
|
|
// and then, we'll replace them with ASCII whitespaces here. We
|
|
// should avoid this overwriting things as far as possible because
|
|
// replacing characters in text nodes causes running mutation
|
|
// event listeners which are really expensive.
|
|
// Adjust end of composition string if there is composition string.
|
|
EditorRawDOMPoint pointToAdjust(GetCompositionEndPoint());
|
|
if (!pointToAdjust.IsSet()) {
|
|
// Otherwise, adjust current selection start point.
|
|
pointToAdjust = EditorBase::GetStartPoint(*SelectionRefPtr());
|
|
if (NS_WARN_IF(!pointToAdjust.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
rv = WSRunObject(*this, pointToAdjust).AdjustWhitespace();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::AdjustWhitespace() failed");
|
|
return rv;
|
|
}
|
|
|
|
// also do this for original selection endpoints.
|
|
// XXX Hmm, if `AdjustWhitespace()` runs mutation event listener
|
|
// and that causes changing `mSelectedRange`, what we should do?
|
|
if (NS_WARN_IF(
|
|
!TopLevelEditSubActionDataRef().mSelectedRange->IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
DebugOnly<nsresult> rvIgnored =
|
|
WSRunObject(
|
|
*this,
|
|
TopLevelEditSubActionDataRef().mSelectedRange->StartRawPoint())
|
|
.AdjustWhitespace();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"WSRunObject::AdjustWhitespace() failed, but ignored");
|
|
// we only need to handle old selection endpoint if it was different
|
|
// from start
|
|
if (TopLevelEditSubActionDataRef().mSelectedRange->IsCollapsed()) {
|
|
DebugOnly<nsresult> rvIgnored =
|
|
WSRunObject(
|
|
*this,
|
|
TopLevelEditSubActionDataRef().mSelectedRange->EndRawPoint())
|
|
.AdjustWhitespace();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"WSRunObject::AdjustWhitespace() failed, but ignored");
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// If we created a new block, make sure caret is in it.
|
|
if (TopLevelEditSubActionDataRef().mNewBlockElement &&
|
|
SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretInBlockElement(
|
|
MOZ_KnownLive(*TopLevelEditSubActionDataRef().mNewBlockElement));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureSelectionInBlockElement() failed, but ignored");
|
|
}
|
|
|
|
// Adjust selection for insert text, html paste, and delete actions if
|
|
// we haven't removed new empty blocks. Note that if empty block parents
|
|
// are removed, Selection should've been adjusted by the method which
|
|
// did it.
|
|
if (!TopLevelEditSubActionDataRef().mDidDeleteEmptyParentBlocks &&
|
|
SelectionRefPtr()->IsCollapsed()) {
|
|
switch (GetTopLevelEditSubAction()) {
|
|
case EditSubAction::eInsertText:
|
|
case EditSubAction::eInsertTextComingFromIME:
|
|
case EditSubAction::eDeleteSelectedContent:
|
|
case EditSubAction::eInsertLineBreak:
|
|
case EditSubAction::eInsertParagraphSeparator:
|
|
case EditSubAction::ePasteHTMLContent:
|
|
case EditSubAction::eInsertHTMLSource:
|
|
// XXX AdjustCaretPositionAndEnsurePaddingBRElement() intentionally
|
|
// does not create padding `<br>` element for empty editor.
|
|
// Investigate which is better that whether this should does it
|
|
// or wait MaybeCreatePaddingBRElementForEmptyEditor().
|
|
rv = AdjustCaretPositionAndEnsurePaddingBRElement(
|
|
GetDirectionOfTopLevelEditSubAction());
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::AdjustCaretPositionAndEnsurePaddingBRElement() "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// check for any styles which were removed inappropriately
|
|
bool reapplyCachedStyle;
|
|
switch (GetTopLevelEditSubAction()) {
|
|
case EditSubAction::eInsertText:
|
|
case EditSubAction::eInsertTextComingFromIME:
|
|
case EditSubAction::eDeleteSelectedContent:
|
|
reapplyCachedStyle = true;
|
|
break;
|
|
default:
|
|
reapplyCachedStyle =
|
|
IsStyleCachePreservingSubAction(GetTopLevelEditSubAction());
|
|
break;
|
|
}
|
|
if (reapplyCachedStyle) {
|
|
DebugOnly<nsresult> rvIgnored =
|
|
mTypeInState->UpdateSelState(SelectionRefPtr());
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"TypeInState::UpdateSelState() failed, but ignored");
|
|
rv = ReapplyCachedStyles();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::ReapplyCachedStyles() failed");
|
|
return rv;
|
|
}
|
|
TopLevelEditSubActionDataRef().mCachedInlineStyles->Clear();
|
|
}
|
|
}
|
|
|
|
rv = HandleInlineSpellCheck(
|
|
TopLevelEditSubActionDataRef().mSelectedRange->StartPoint(),
|
|
TopLevelEditSubActionDataRef().mChangedRange);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::HandleInlineSpellCheck() failed");
|
|
return rv;
|
|
}
|
|
|
|
// detect empty doc
|
|
// XXX Need to investigate when the padding <br> element is removed because
|
|
// I don't see the <br> element with testing manually. If it won't be
|
|
// used, we can get rid of this cost.
|
|
rv = MaybeCreatePaddingBRElementForEmptyEditor();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::MaybeCreatePaddingBRElementForEmptyEditor() failed");
|
|
return rv;
|
|
}
|
|
|
|
// adjust selection HINT if needed
|
|
if (!TopLevelEditSubActionDataRef().mDidExplicitlySetInterLine &&
|
|
SelectionRefPtr()->IsCollapsed()) {
|
|
SetSelectionInterlinePosition();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::CanHandleHTMLEditSubAction() const {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
|
|
// If there is not selection ranges, we should ignore the result.
|
|
if (!SelectionRefPtr()->RangeCount()) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
nsRange* range = SelectionRefPtr()->GetRangeAt(0);
|
|
nsINode* selStartNode = range->GetStartContainer();
|
|
if (NS_WARN_IF(!selStartNode)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*selStartNode)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
nsINode* selEndNode = range->GetEndContainer();
|
|
if (NS_WARN_IF(!selEndNode)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (selStartNode == selEndNode) {
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*selEndNode)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// XXX What does it mean the common ancestor is editable? I have no idea.
|
|
// It should be in same (active) editing host, and even if it's editable,
|
|
// there may be non-editable contents in the range.
|
|
nsINode* commonAncestor = range->GetClosestCommonInclusiveAncestor();
|
|
if (!commonAncestor) {
|
|
NS_WARNING(
|
|
"AbstractRange::GetClosestCommonInclusiveAncestor() returned nullptr");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
return HTMLEditUtils::IsSimplyEditableNode(*commonAncestor)
|
|
? EditActionIgnored()
|
|
: EditActionCanceled();
|
|
}
|
|
|
|
ListElementSelectionState::ListElementSelectionState(HTMLEditor& aHTMLEditor,
|
|
ErrorResult& aRv) {
|
|
MOZ_ASSERT(!aRv.Failed());
|
|
|
|
if (NS_WARN_IF(aHTMLEditor.Destroyed())) {
|
|
aRv.Throw(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
// XXX Should we create another constructor which won't create
|
|
// AutoEditActionDataSetter? Or should we create another
|
|
// AutoEditActionDataSetter which won't nest edit action?
|
|
EditorBase::AutoEditActionDataSetter editActionData(aHTMLEditor,
|
|
EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = aHTMLEditor.CollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eCreateOrChangeList,
|
|
HTMLEditor::CollectNonEditableNodes::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrChangeList, CollectNonEditableNodes::No) failed");
|
|
aRv = EditorBase::ToGenericNSResult(rv);
|
|
return;
|
|
}
|
|
|
|
// Examine list type for nodes in selection.
|
|
for (const auto& content : arrayOfContents) {
|
|
if (!content->IsElement()) {
|
|
mIsOtherContentSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::ul)) {
|
|
mIsULElementSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::ol)) {
|
|
mIsOLElementSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::li)) {
|
|
if (Element* parent = content->GetParentElement()) {
|
|
if (parent->IsHTMLElement(nsGkAtoms::ul)) {
|
|
mIsULElementSelected = true;
|
|
} else if (parent->IsHTMLElement(nsGkAtoms::ol)) {
|
|
mIsOLElementSelected = true;
|
|
}
|
|
}
|
|
} else if (content->IsAnyOfHTMLElements(nsGkAtoms::dl, nsGkAtoms::dt,
|
|
nsGkAtoms::dd)) {
|
|
mIsDLElementSelected = true;
|
|
} else {
|
|
mIsOtherContentSelected = true;
|
|
}
|
|
|
|
if (mIsULElementSelected && mIsOLElementSelected && mIsDLElementSelected &&
|
|
mIsOtherContentSelected) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
ListItemElementSelectionState::ListItemElementSelectionState(
|
|
HTMLEditor& aHTMLEditor, ErrorResult& aRv) {
|
|
MOZ_ASSERT(!aRv.Failed());
|
|
|
|
if (NS_WARN_IF(aHTMLEditor.Destroyed())) {
|
|
aRv.Throw(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
// XXX Should we create another constructor which won't create
|
|
// AutoEditActionDataSetter? Or should we create another
|
|
// AutoEditActionDataSetter which won't nest edit action?
|
|
EditorBase::AutoEditActionDataSetter editActionData(aHTMLEditor,
|
|
EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = aHTMLEditor.CollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eCreateOrChangeList,
|
|
HTMLEditor::CollectNonEditableNodes::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrChangeList, CollectNonEditableNodes::No) failed");
|
|
aRv = EditorBase::ToGenericNSResult(rv);
|
|
return;
|
|
}
|
|
|
|
// examine list type for nodes in selection
|
|
for (const auto& content : arrayOfContents) {
|
|
if (!content->IsElement()) {
|
|
mIsOtherElementSelected = true;
|
|
} else if (content->IsAnyOfHTMLElements(nsGkAtoms::ul, nsGkAtoms::ol,
|
|
nsGkAtoms::li)) {
|
|
mIsLIElementSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::dt)) {
|
|
mIsDTElementSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::dd)) {
|
|
mIsDDElementSelected = true;
|
|
} else if (content->IsHTMLElement(nsGkAtoms::dl)) {
|
|
if (mIsDTElementSelected && mIsDDElementSelected) {
|
|
continue;
|
|
}
|
|
// need to look inside dl and see which types of items it has
|
|
DefinitionListItemScanner scanner(*content->AsElement());
|
|
mIsDTElementSelected |= scanner.DTElementFound();
|
|
mIsDDElementSelected |= scanner.DDElementFound();
|
|
} else {
|
|
mIsOtherElementSelected = true;
|
|
}
|
|
|
|
if (mIsLIElementSelected && mIsDTElementSelected && mIsDDElementSelected &&
|
|
mIsOtherElementSelected) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
AlignStateAtSelection::AlignStateAtSelection(HTMLEditor& aHTMLEditor,
|
|
ErrorResult& aRv) {
|
|
MOZ_ASSERT(!aRv.Failed());
|
|
|
|
if (NS_WARN_IF(aHTMLEditor.Destroyed())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
// XXX Should we create another constructor which won't create
|
|
// AutoEditActionDataSetter? Or should we create another
|
|
// AutoEditActionDataSetter which won't nest edit action?
|
|
EditorBase::AutoEditActionDataSetter editActionData(aHTMLEditor,
|
|
EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
if (aHTMLEditor.IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return;
|
|
}
|
|
|
|
// For now, just return first alignment. We don't check if it's mixed.
|
|
// This is for efficiency given that our current UI doesn't care if it's
|
|
// mixed.
|
|
// cmanske: NOT TRUE! We would like to pay attention to mixed state in
|
|
// [Format] -> [Align] submenu!
|
|
|
|
// This routine assumes that alignment is done ONLY by `<div>` elements
|
|
// if aHTMLEditor is not in CSS mode.
|
|
|
|
if (NS_WARN_IF(!aHTMLEditor.GetRoot())) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
OwningNonNull<Element> bodyOrDocumentElement = *aHTMLEditor.GetRoot();
|
|
EditorRawDOMPoint atBodyOrDocumentElement(bodyOrDocumentElement);
|
|
|
|
nsRange* firstRange = aHTMLEditor.SelectionRefPtr()->GetRangeAt(0);
|
|
mFoundSelectionRanges = !!firstRange;
|
|
if (!mFoundSelectionRanges) {
|
|
NS_WARNING("There was no selection range");
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
EditorRawDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
MOZ_ASSERT(atStartOfSelection.IsSetAndValid());
|
|
|
|
nsIContent* editTargetContent = nullptr;
|
|
// If selection is collapsed or in a text node, take the container.
|
|
if (aHTMLEditor.SelectionRefPtr()->IsCollapsed() ||
|
|
atStartOfSelection.IsInTextNode()) {
|
|
editTargetContent = atStartOfSelection.GetContainerAsContent();
|
|
if (NS_WARN_IF(!editTargetContent)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
}
|
|
// If selection container is the `<body>` element which is set to
|
|
// `HTMLDocument.body`, take first editable node in it.
|
|
// XXX Why don't we just compare `atStartOfSelection.GetChild()` and
|
|
// `bodyOrDocumentElement`? Then, we can avoid computing the
|
|
// offset.
|
|
else if (atStartOfSelection.IsContainerHTMLElement(nsGkAtoms::html) &&
|
|
atBodyOrDocumentElement.IsSet() &&
|
|
atStartOfSelection.Offset() == atBodyOrDocumentElement.Offset()) {
|
|
editTargetContent = aHTMLEditor.GetNextEditableNode(atStartOfSelection);
|
|
if (NS_WARN_IF(!editTargetContent)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
}
|
|
// Otherwise, use first selected node.
|
|
// XXX Only for retreiving it, the following block treats all selected
|
|
// ranges. `HTMLEditor` should have
|
|
// `GetFirstSelectionRangeExtendedToHardLineStartAndEnd()`.
|
|
else {
|
|
AutoTArray<RefPtr<nsRange>, 4> arrayOfRanges;
|
|
aHTMLEditor.GetSelectionRangesExtendedToHardLineStartAndEnd(
|
|
arrayOfRanges, EditSubAction::eSetOrClearAlignment);
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = aHTMLEditor.CollectEditTargetNodes(
|
|
arrayOfRanges, arrayOfContents, EditSubAction::eSetOrClearAlignment,
|
|
HTMLEditor::CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CollectEditTargetNodes(eSetOrClearAlignment, "
|
|
"CollectNonEditableNodes::Yes) failed");
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
if (arrayOfContents.IsEmpty()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CollectEditTargetNodes(eSetOrClearAlignment, "
|
|
"CollectNonEditableNodes::Yes) returned no contents");
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
editTargetContent = arrayOfContents[0];
|
|
}
|
|
|
|
RefPtr<Element> blockElementAtEditTarget =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(*editTargetContent);
|
|
if (NS_WARN_IF(!blockElementAtEditTarget)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
if (aHTMLEditor.IsCSSEnabled() &&
|
|
CSSEditUtils::IsCSSEditableProperty(blockElementAtEditTarget, nullptr,
|
|
nsGkAtoms::align)) {
|
|
// We are in CSS mode and we know how to align this element with CSS
|
|
nsAutoString value;
|
|
// Let's get the value(s) of text-align or margin-left/margin-right
|
|
DebugOnly<nsresult> rvIgnored =
|
|
CSSEditUtils::GetComputedCSSEquivalentToHTMLInlineStyleSet(
|
|
*blockElementAtEditTarget, nullptr, nsGkAtoms::align, value);
|
|
if (NS_WARN_IF(aHTMLEditor.Destroyed())) {
|
|
aRv.Throw(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetComputedCSSEquivalentToHTMLInlineStyleSet(nsGkAtoms::"
|
|
"align, "
|
|
"eComputed) failed, but ignored");
|
|
if (value.EqualsLiteral("center") || value.EqualsLiteral("-moz-center") ||
|
|
value.EqualsLiteral("auto auto")) {
|
|
mFirstAlign = nsIHTMLEditor::eCenter;
|
|
return;
|
|
}
|
|
if (value.EqualsLiteral("right") || value.EqualsLiteral("-moz-right") ||
|
|
value.EqualsLiteral("auto 0px")) {
|
|
mFirstAlign = nsIHTMLEditor::eRight;
|
|
return;
|
|
}
|
|
if (value.EqualsLiteral("justify")) {
|
|
mFirstAlign = nsIHTMLEditor::eJustify;
|
|
return;
|
|
}
|
|
// XXX In RTL document, is this expected?
|
|
mFirstAlign = nsIHTMLEditor::eLeft;
|
|
return;
|
|
}
|
|
|
|
for (nsIContent* containerContent :
|
|
InclusiveAncestorsOfType<nsIContent>(*editTargetContent)) {
|
|
// If the node is a parent `<table>` element of edit target, let's break
|
|
// here to materialize the 'inline-block' behaviour of html tables
|
|
// regarding to text alignment.
|
|
if (containerContent != editTargetContent &&
|
|
containerContent->IsHTMLElement(nsGkAtoms::table)) {
|
|
return;
|
|
}
|
|
|
|
if (CSSEditUtils::IsCSSEditableProperty(containerContent, nullptr,
|
|
nsGkAtoms::align)) {
|
|
nsAutoString value;
|
|
DebugOnly<nsresult> rvIgnored = CSSEditUtils::GetSpecifiedProperty(
|
|
*containerContent, *nsGkAtoms::textAlign, value);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetSpecifiedProperty(nsGkAtoms::"
|
|
"textAlign) failed, but ignored");
|
|
if (!value.IsEmpty()) {
|
|
if (value.EqualsLiteral("center")) {
|
|
mFirstAlign = nsIHTMLEditor::eCenter;
|
|
return;
|
|
}
|
|
if (value.EqualsLiteral("right")) {
|
|
mFirstAlign = nsIHTMLEditor::eRight;
|
|
return;
|
|
}
|
|
if (value.EqualsLiteral("justify")) {
|
|
mFirstAlign = nsIHTMLEditor::eJustify;
|
|
return;
|
|
}
|
|
if (value.EqualsLiteral("left")) {
|
|
mFirstAlign = nsIHTMLEditor::eLeft;
|
|
return;
|
|
}
|
|
// XXX
|
|
// text-align: start and end aren't supported yet
|
|
}
|
|
}
|
|
|
|
if (!HTMLEditUtils::SupportsAlignAttr(*containerContent)) {
|
|
continue;
|
|
}
|
|
|
|
nsAutoString alignAttributeValue;
|
|
containerContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::align,
|
|
alignAttributeValue);
|
|
if (alignAttributeValue.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
if (alignAttributeValue.LowerCaseEqualsASCII("center")) {
|
|
mFirstAlign = nsIHTMLEditor::eCenter;
|
|
return;
|
|
}
|
|
if (alignAttributeValue.LowerCaseEqualsASCII("right")) {
|
|
mFirstAlign = nsIHTMLEditor::eRight;
|
|
return;
|
|
}
|
|
// XXX This is odd case. `<div align="justify">` is not in any standards.
|
|
if (alignAttributeValue.LowerCaseEqualsASCII("justify")) {
|
|
mFirstAlign = nsIHTMLEditor::eJustify;
|
|
return;
|
|
}
|
|
// XXX In RTL document, is this expected?
|
|
mFirstAlign = nsIHTMLEditor::eLeft;
|
|
return;
|
|
}
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT static nsStaticAtom& MarginPropertyAtomForIndent(
|
|
nsIContent& aContent) {
|
|
nsAutoString direction;
|
|
DebugOnly<nsresult> rvIgnored = CSSEditUtils::GetComputedProperty(
|
|
aContent, *nsGkAtoms::direction, direction);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetComputedProperty(nsGkAtoms::direction)"
|
|
" failed, but ignored");
|
|
return direction.EqualsLiteral("rtl") ? *nsGkAtoms::marginRight
|
|
: *nsGkAtoms::marginLeft;
|
|
}
|
|
|
|
ParagraphStateAtSelection::ParagraphStateAtSelection(HTMLEditor& aHTMLEditor,
|
|
ErrorResult& aRv) {
|
|
if (NS_WARN_IF(aHTMLEditor.Destroyed())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
// XXX Should we create another constructor which won't create
|
|
// AutoEditActionDataSetter? Or should we create another
|
|
// AutoEditActionDataSetter which won't nest edit action?
|
|
EditorBase::AutoEditActionDataSetter editActionData(aHTMLEditor,
|
|
EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED);
|
|
return;
|
|
}
|
|
|
|
if (aHTMLEditor.IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return;
|
|
}
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv =
|
|
CollectEditableFormatNodesInSelection(aHTMLEditor, arrayOfContents);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"ParagraphStateAtSelection::CollectEditableFormatNodesInSelection() "
|
|
"failed");
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
// We need to append descendant format block if block nodes are not format
|
|
// block. This is so we only have to look "up" the hierarchy to find
|
|
// format nodes, instead of both up and down.
|
|
for (int32_t i = arrayOfContents.Length() - 1; i >= 0; i--) {
|
|
auto& content = arrayOfContents[i];
|
|
nsAutoString format;
|
|
if (HTMLEditUtils::IsBlockElement(content) &&
|
|
!HTMLEditUtils::IsFormatNode(content)) {
|
|
// XXX This RemoveObject() call has already been commented out and
|
|
// the above comment explained we're trying to replace non-format
|
|
// block nodes in the array. According to the following blocks and
|
|
// `AppendDescendantFormatNodesAndFirstInlineNode()`, replacing
|
|
// non-format block with descendants format blocks makes sense.
|
|
// arrayOfContents.RemoveObject(node);
|
|
ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode(
|
|
arrayOfContents, *content->AsElement());
|
|
}
|
|
}
|
|
|
|
// We might have an empty node list. if so, find selection parent
|
|
// and put that on the list
|
|
if (arrayOfContents.IsEmpty()) {
|
|
EditorRawDOMPoint atCaret(
|
|
EditorBase::GetStartPoint(*aHTMLEditor.SelectionRefPtr()));
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
nsIContent* content = atCaret.GetContainerAsContent();
|
|
if (NS_WARN_IF(!content)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
arrayOfContents.AppendElement(*content);
|
|
}
|
|
|
|
Element* bodyOrDocumentElement = aHTMLEditor.GetRoot();
|
|
if (NS_WARN_IF(!bodyOrDocumentElement)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
for (auto& content : Reversed(arrayOfContents)) {
|
|
nsAtom* paragraphStateOfNode = nsGkAtoms::_empty;
|
|
if (HTMLEditUtils::IsFormatNode(content)) {
|
|
MOZ_ASSERT(content->NodeInfo()->NameAtom());
|
|
paragraphStateOfNode = content->NodeInfo()->NameAtom();
|
|
}
|
|
// Ignore non-format block node since its children have been appended
|
|
// the list above so that we'll handle this descendants later.
|
|
else if (HTMLEditUtils::IsBlockElement(content)) {
|
|
continue;
|
|
}
|
|
// If we meet an inline node, let's get its parent format.
|
|
else {
|
|
for (nsINode* parentNode = content->GetParentNode(); parentNode;
|
|
parentNode = parentNode->GetParentNode()) {
|
|
// If we reach `HTMLDocument.body` or `Document.documentElement`,
|
|
// there is no format.
|
|
if (parentNode == bodyOrDocumentElement) {
|
|
break;
|
|
}
|
|
if (HTMLEditUtils::IsFormatNode(parentNode)) {
|
|
MOZ_ASSERT(parentNode->NodeInfo()->NameAtom());
|
|
paragraphStateOfNode = parentNode->NodeInfo()->NameAtom();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if this is the first node, we've found, remember it as the format
|
|
if (!mFirstParagraphState) {
|
|
mFirstParagraphState = paragraphStateOfNode;
|
|
continue;
|
|
}
|
|
// else make sure it matches previously found format
|
|
if (mFirstParagraphState != paragraphStateOfNode) {
|
|
mIsMixed = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
void ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents,
|
|
Element& aNonFormatBlockElement) {
|
|
MOZ_ASSERT(HTMLEditUtils::IsBlockElement(aNonFormatBlockElement));
|
|
MOZ_ASSERT(!HTMLEditUtils::IsFormatNode(&aNonFormatBlockElement));
|
|
|
|
// We only need to place any one inline inside this node onto
|
|
// the list. They are all the same for purposes of determining
|
|
// paragraph style. We use foundInline to track this as we are
|
|
// going through the children in the loop below.
|
|
bool foundInline = false;
|
|
for (nsIContent* childContent = aNonFormatBlockElement.GetFirstChild();
|
|
childContent; childContent = childContent->GetNextSibling()) {
|
|
bool isBlock = HTMLEditUtils::IsBlockElement(*childContent);
|
|
bool isFormat = HTMLEditUtils::IsFormatNode(childContent);
|
|
// If the child is a non-format block element, let's check its children
|
|
// recursively.
|
|
if (isBlock && !isFormat) {
|
|
ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode(
|
|
aArrayOfContents, *childContent->AsElement());
|
|
continue;
|
|
}
|
|
|
|
// If it's a format block, append it.
|
|
if (isFormat) {
|
|
aArrayOfContents.AppendElement(*childContent);
|
|
continue;
|
|
}
|
|
|
|
MOZ_ASSERT(!isBlock);
|
|
|
|
// If we haven't found inline node, append only this first inline node.
|
|
// XXX I think that this makes sense if caller of this removes
|
|
// aNonFormatBlockElement from aArrayOfContents because the last loop
|
|
// of the constructor can check parent format block with
|
|
// aNonFormatBlockElement.
|
|
if (!foundInline) {
|
|
foundInline = true;
|
|
aArrayOfContents.AppendElement(*childContent);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
nsresult ParagraphStateAtSelection::CollectEditableFormatNodesInSelection(
|
|
HTMLEditor& aHTMLEditor,
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents) {
|
|
nsresult rv = aHTMLEditor.CollectEditTargetNodesInExtendedSelectionRanges(
|
|
aArrayOfContents, EditSubAction::eCreateOrRemoveBlock,
|
|
HTMLEditor::CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrRemoveBlock, CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
// Pre-process our list of nodes
|
|
for (int32_t i = aArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent> content = aArrayOfContents[i];
|
|
|
|
// Remove all non-editable nodes. Leave them be.
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
aArrayOfContents.RemoveElementAt(i);
|
|
continue;
|
|
}
|
|
|
|
// Scan for table elements. If we find table elements other than table,
|
|
// replace it with a list of any editable non-table content. Ditto for
|
|
// list elements.
|
|
if (HTMLEditUtils::IsTableElement(content) ||
|
|
HTMLEditUtils::IsList(content) || HTMLEditUtils::IsListItem(content)) {
|
|
aArrayOfContents.RemoveElementAt(i);
|
|
aHTMLEditor.CollectChildren(content, aArrayOfContents, i,
|
|
HTMLEditor::CollectListChildren::Yes,
|
|
HTMLEditor::CollectTableChildren::Yes,
|
|
HTMLEditor::CollectNonEditableNodes::Yes);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::EnsureCaretNotAfterPaddingBRElement() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
|
|
// If we are after a padding `<br>` element for empty last line in the same
|
|
// block, then move selection to be before it
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorRawDOMPoint atSelectionStart(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atSelectionStart.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
MOZ_ASSERT(atSelectionStart.IsSetAndValid());
|
|
|
|
nsCOMPtr<nsIContent> previousEditableContent =
|
|
GetPreviousEditableHTMLNode(atSelectionStart);
|
|
if (!previousEditableContent ||
|
|
!EditorUtils::IsPaddingBRElementForEmptyLastLine(
|
|
*previousEditableContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!atSelectionStart.IsInContentNode()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> blockElementAtSelectionStart =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*atSelectionStart.ContainerAsContent());
|
|
RefPtr<Element> parentBlockElementOfPreviousEditableContent =
|
|
HTMLEditUtils::GetAncestorBlockElement(*previousEditableContent);
|
|
|
|
if (!blockElementAtSelectionStart ||
|
|
blockElementAtSelectionStart !=
|
|
parentBlockElementOfPreviousEditableContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we are here then the selection is right after a padding <br>
|
|
// element for empty last line that is in the same block as the
|
|
// selection. We need to move the selection start to be before the
|
|
// padding <br> element.
|
|
EditorRawDOMPoint atPreviousEditableContent(previousEditableContent);
|
|
nsresult rv = CollapseSelectionTo(atPreviousEditableContent);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::PrepareInlineStylesForCaret() {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
|
|
// XXX This method works with the top level edit sub-action, but this
|
|
// must be wrong if we are handling nested edit action.
|
|
|
|
if (TopLevelEditSubActionDataRef().mDidDeleteSelection) {
|
|
switch (GetTopLevelEditSubAction()) {
|
|
case EditSubAction::eInsertText:
|
|
case EditSubAction::eInsertTextComingFromIME:
|
|
case EditSubAction::eDeleteSelectedContent: {
|
|
nsresult rv = ReapplyCachedStyles();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::ReapplyCachedStyles() failed");
|
|
return rv;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
// For most actions we want to clear the cached styles, but there are
|
|
// exceptions
|
|
if (!IsStyleCachePreservingSubAction(GetTopLevelEditSubAction())) {
|
|
TopLevelEditSubActionDataRef().mCachedInlineStyles->Clear();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleInsertText(
|
|
EditSubAction aEditSubAction, const nsAString& aInsertionString) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(aEditSubAction == EditSubAction::eInsertText ||
|
|
aEditSubAction == EditSubAction::eInsertTextComingFromIME);
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
UndefineCaretBidiLevel();
|
|
|
|
// If the selection isn't collapsed, delete it. Don't delete existing inline
|
|
// tags, because we're hopefully going to insert text (bug 787432).
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv =
|
|
DeleteSelectionAsSubAction(nsIEditor::eNone, nsIEditor::eNoStrip);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::DeleteSelectionAsSubAction(nsIEditor::eNone, "
|
|
"nsIEditor::eNoStrip) failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
RefPtr<Document> document = GetDocument();
|
|
if (NS_WARN_IF(!document)) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
RefPtr<nsRange> firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// for every property that is set, insert a new inline style node
|
|
// XXX CreateStyleForInsertText() adjusts selection automatically, but
|
|
// it should just return the insertion point instead.
|
|
rv = CreateStyleForInsertText(*firstRange);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CreateStyleForInsertText() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint pointToInsert(firstRange->StartRef());
|
|
if (NS_WARN_IF(!pointToInsert.IsSet())) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
MOZ_ASSERT(pointToInsert.IsSetAndValid());
|
|
|
|
// dont put text in places that can't have it
|
|
if (!pointToInsert.IsInTextNode() &&
|
|
!HTMLEditUtils::CanNodeContain(*pointToInsert.GetContainer(),
|
|
*nsGkAtoms::textTagName)) {
|
|
NS_WARNING("Selection start container couldn't have text nodes");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (aEditSubAction == EditSubAction::eInsertTextComingFromIME) {
|
|
EditorRawDOMPoint compositionStartPoint = GetCompositionStartPoint();
|
|
if (!compositionStartPoint.IsSet()) {
|
|
compositionStartPoint = pointToInsert;
|
|
}
|
|
|
|
if (aInsertionString.IsEmpty()) {
|
|
// Right now the WSRunObject code bails on empty strings, but IME needs
|
|
// the InsertTextWithTransaction() call to still happen since empty
|
|
// strings are meaningful there.
|
|
nsresult rv = InsertTextWithTransaction(*document, aInsertionString,
|
|
compositionStartPoint);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::InsertTextWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
EditorRawDOMPoint compositionEndPoint = GetCompositionEndPoint();
|
|
if (!compositionEndPoint.IsSet()) {
|
|
compositionEndPoint = compositionStartPoint;
|
|
}
|
|
WSRunObject wsObj(*this, compositionStartPoint, compositionEndPoint);
|
|
nsresult rv = wsObj.InsertText(*document, aInsertionString);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::InsertText() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
compositionStartPoint = GetCompositionStartPoint();
|
|
compositionEndPoint = GetCompositionEndPoint();
|
|
if (NS_WARN_IF(!compositionStartPoint.IsSet()) ||
|
|
NS_WARN_IF(!compositionEndPoint.IsSet())) {
|
|
// Mutation event listener has changed the DOM tree...
|
|
return EditActionHandled();
|
|
}
|
|
rv = TopLevelEditSubActionDataRef().mChangedRange->SetStartAndEnd(
|
|
compositionStartPoint.ToRawRangeBoundary(),
|
|
compositionEndPoint.ToRawRangeBoundary());
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "nsRange::SetStartAndEnd() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
MOZ_ASSERT(aEditSubAction == EditSubAction::eInsertText);
|
|
|
|
// find where we are
|
|
EditorDOMPoint currentPoint(pointToInsert);
|
|
|
|
// is our text going to be PREformatted?
|
|
// We remember this so that we know how to handle tabs.
|
|
bool isPRE = EditorBase::IsPreformatted(pointToInsert.GetContainer());
|
|
|
|
// turn off the edit listener: we know how to
|
|
// build the "doc changed range" ourselves, and it's
|
|
// must faster to do it once here than to track all
|
|
// the changes one at a time.
|
|
AutoRestore<bool> disableListener(
|
|
EditSubActionDataRef().mAdjustChangedRangeFromListener);
|
|
EditSubActionDataRef().mAdjustChangedRangeFromListener = false;
|
|
|
|
// don't change my selection in subtransactions
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
int32_t pos = 0;
|
|
NS_NAMED_LITERAL_STRING(newlineStr, LFSTR);
|
|
|
|
{
|
|
AutoTrackDOMPoint tracker(RangeUpdaterRef(), &pointToInsert);
|
|
|
|
// for efficiency, break out the pre case separately. This is because
|
|
// its a lot cheaper to search the input string for only newlines than
|
|
// it is to search for both tabs and newlines.
|
|
if (isPRE || IsPlaintextEditor()) {
|
|
while (pos != -1 &&
|
|
pos < static_cast<int32_t>(aInsertionString.Length())) {
|
|
int32_t oldPos = pos;
|
|
int32_t subStrLen;
|
|
pos = aInsertionString.FindChar(nsCRT::LF, oldPos);
|
|
|
|
if (pos != -1) {
|
|
subStrLen = pos - oldPos;
|
|
// if first char is newline, then use just it
|
|
if (!subStrLen) {
|
|
subStrLen = 1;
|
|
}
|
|
} else {
|
|
subStrLen = aInsertionString.Length() - oldPos;
|
|
pos = aInsertionString.Length();
|
|
}
|
|
|
|
nsDependentSubstring subStr(aInsertionString, oldPos, subStrLen);
|
|
|
|
// is it a return?
|
|
if (subStr.Equals(newlineStr)) {
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(currentPoint, nsIEditor::eNone);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertBRElementWithTransaction(eNone) failed");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
pos++;
|
|
if (brElement->GetNextSibling()) {
|
|
pointToInsert.Set(brElement->GetNextSibling());
|
|
} else {
|
|
pointToInsert.SetToEndOf(currentPoint.GetContainer());
|
|
}
|
|
// XXX In most cases, pointToInsert and currentPoint are same here.
|
|
// But if the <br> element has been moved to different point by
|
|
// mutation observer, those points become different.
|
|
currentPoint.SetAfter(brElement);
|
|
NS_WARNING_ASSERTION(currentPoint.IsSet(),
|
|
"Failed to set after the <br> element");
|
|
NS_WARNING_ASSERTION(currentPoint == pointToInsert,
|
|
"Perhaps, <br> element position has been moved "
|
|
"to different point "
|
|
"by mutation observer");
|
|
} else {
|
|
EditorRawDOMPoint pointAfterInsertedString;
|
|
nsresult rv = InsertTextWithTransaction(
|
|
*document, subStr, EditorRawDOMPoint(currentPoint),
|
|
&pointAfterInsertedString);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertTextWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
currentPoint = pointAfterInsertedString;
|
|
pointToInsert = pointAfterInsertedString;
|
|
}
|
|
}
|
|
} else {
|
|
NS_NAMED_LITERAL_STRING(tabStr, "\t");
|
|
NS_NAMED_LITERAL_STRING(spacesStr, " ");
|
|
char specialChars[] = {TAB, nsCRT::LF, 0};
|
|
nsAutoString insertionString(aInsertionString); // For FindCharInSet().
|
|
while (pos != -1 &&
|
|
pos < static_cast<int32_t>(insertionString.Length())) {
|
|
int32_t oldPos = pos;
|
|
int32_t subStrLen;
|
|
pos = insertionString.FindCharInSet(specialChars, oldPos);
|
|
|
|
if (pos != -1) {
|
|
subStrLen = pos - oldPos;
|
|
// if first char is newline, then use just it
|
|
if (!subStrLen) {
|
|
subStrLen = 1;
|
|
}
|
|
} else {
|
|
subStrLen = insertionString.Length() - oldPos;
|
|
pos = insertionString.Length();
|
|
}
|
|
|
|
nsDependentSubstring subStr(insertionString, oldPos, subStrLen);
|
|
WSRunObject wsObj(*this, currentPoint);
|
|
|
|
// is it a tab?
|
|
if (subStr.Equals(tabStr)) {
|
|
EditorRawDOMPoint pointAfterInsertedSpaces;
|
|
nsresult rv =
|
|
wsObj.InsertText(*document, spacesStr, &pointAfterInsertedSpaces);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::InsertText() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
pos++;
|
|
MOZ_ASSERT(pointAfterInsertedSpaces.IsSet());
|
|
currentPoint = pointAfterInsertedSpaces;
|
|
pointToInsert = pointAfterInsertedSpaces;
|
|
}
|
|
// is it a return?
|
|
else if (subStr.Equals(newlineStr)) {
|
|
RefPtr<Element> newBRElement =
|
|
wsObj.InsertBreak(MOZ_KnownLive(*SelectionRefPtr()), currentPoint,
|
|
nsIEditor::eNone);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newBRElement) {
|
|
NS_WARNING("WSRunObject::InsertBreak(eNone) failed");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
pos++;
|
|
if (newBRElement->GetNextSibling()) {
|
|
pointToInsert.Set(newBRElement->GetNextSibling());
|
|
} else {
|
|
pointToInsert.SetToEndOf(currentPoint.GetContainer());
|
|
}
|
|
currentPoint.SetAfter(newBRElement);
|
|
NS_WARNING_ASSERTION(currentPoint.IsSet(),
|
|
"Failed to set after the new <br> element");
|
|
// XXX If the newBRElement has been moved or removed by mutation
|
|
// observer, we hit this assert. We need to check if
|
|
// newBRElement is in expected point, though, we must have
|
|
// a lot of same bugs...
|
|
NS_WARNING_ASSERTION(
|
|
currentPoint == pointToInsert,
|
|
"Perhaps, newBRElement has been moved or removed unexpectedly");
|
|
} else {
|
|
EditorRawDOMPoint pointAfterInsertedString;
|
|
nsresult rv =
|
|
wsObj.InsertText(*document, subStr, &pointAfterInsertedString);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::InsertText() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
MOZ_ASSERT(pointAfterInsertedString.IsSet());
|
|
currentPoint = pointAfterInsertedString;
|
|
pointToInsert = pointAfterInsertedString;
|
|
}
|
|
}
|
|
}
|
|
|
|
// After this block, pointToInsert is updated by AutoTrackDOMPoint.
|
|
}
|
|
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(false, ignoredError);
|
|
NS_WARNING_ASSERTION(!ignoredError.Failed(),
|
|
"Failed to unset interline position");
|
|
|
|
if (currentPoint.IsSet()) {
|
|
nsresult rv = CollapseSelectionTo(currentPoint);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"Selection::Collapse() failed, but ignored");
|
|
}
|
|
|
|
// manually update the doc changed range so that AfterEdit will clean up
|
|
// the correct portion of the document.
|
|
if (currentPoint.IsSet()) {
|
|
nsresult rv = TopLevelEditSubActionDataRef().mChangedRange->SetStartAndEnd(
|
|
pointToInsert.ToRawRangeBoundary(), currentPoint.ToRawRangeBoundary());
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "nsRange::SetStartAndEnd() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
rv = TopLevelEditSubActionDataRef().mChangedRange->CollapseTo(pointToInsert);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "nsRange::CollapseTo() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::InsertParagraphSeparatorAsSubAction() {
|
|
if (NS_WARN_IF(!mInitSucceeded)) {
|
|
return EditActionIgnored(NS_ERROR_NOT_INITIALIZED);
|
|
}
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
// XXX This may be called by execCommand() with "insertParagraph".
|
|
// In such case, naming the transaction "TypingTxnName" is odd.
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this, *nsGkAtoms::TypingTxnName);
|
|
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eInsertParagraphSeparator, nsIEditor::eNext,
|
|
ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
UndefineCaretBidiLevel();
|
|
|
|
// If the selection isn't collapsed, delete it.
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv =
|
|
DeleteSelectionAsSubAction(nsIEditor::eNone, nsIEditor::eStrip);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::DeleteSelectionAsSubAction(eNone, eStrip) failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
// Split any mailcites in the way. Should we abort this if we encounter
|
|
// table cell boundaries?
|
|
if (IsMailEditor()) {
|
|
EditorDOMPoint pointToSplit(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!pointToSplit.IsSet())) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditActionResult result = SplitMailCiteElements(pointToSplit);
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::SplitMailCiteElements() failed");
|
|
return result;
|
|
}
|
|
if (result.Handled()) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// Smart splitting rules
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
MOZ_ASSERT(atStartOfSelection.IsSetAndValid());
|
|
|
|
// Do nothing if the node is read-only
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(
|
|
*atStartOfSelection.GetContainer())) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// If the active editing host is an inline element, or if the active editing
|
|
// host is the block parent itself and we're configured to use <br> as a
|
|
// paragraph separator, just append a <br>.
|
|
RefPtr<Element> editingHost = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!editingHost)) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// Look for the nearest parent block. However, don't return error even if
|
|
// there is no block parent here because in such case, i.e., editing host
|
|
// is an inline element, we should insert <br> simply.
|
|
RefPtr<Element> blockElement =
|
|
atStartOfSelection.IsInContentNode()
|
|
? HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*atStartOfSelection.ContainerAsContent(), editingHost)
|
|
: nullptr;
|
|
|
|
ParagraphSeparator separator = GetDefaultParagraphSeparator();
|
|
bool insertBRElement;
|
|
// If there is no block parent in the editing host, i.e., the editing host
|
|
// itself is also a non-block element, we should insert a <br> element.
|
|
if (!blockElement) {
|
|
// XXX Chromium checks if the CSS box of the editing host is a block.
|
|
insertBRElement = true;
|
|
}
|
|
// If only the editing host is block, and the default paragraph separator
|
|
// is <br> or the editing host cannot contain a <p> element, we should
|
|
// insert a <br> element.
|
|
else if (editingHost == blockElement) {
|
|
insertBRElement = separator == ParagraphSeparator::br ||
|
|
!HTMLEditUtils::CanElementContainParagraph(*editingHost);
|
|
}
|
|
// If the nearest block parent is a single-line container declared in
|
|
// the execCommand spec and not the editing host, we should separate the
|
|
// block even if the default paragraph separator is <br> element.
|
|
else if (HTMLEditUtils::IsSingleLineContainer(*blockElement)) {
|
|
insertBRElement = false;
|
|
}
|
|
// Otherwise, unless there is no block ancestor which can contain <p>
|
|
// element, we shouldn't insert a <br> element here.
|
|
else {
|
|
insertBRElement = true;
|
|
for (Element* blockAncestor = blockElement;
|
|
blockAncestor && insertBRElement;
|
|
blockAncestor = HTMLEditUtils::GetAncestorBlockElement(*blockAncestor,
|
|
editingHost)) {
|
|
insertBRElement =
|
|
!HTMLEditUtils::CanElementContainParagraph(*blockAncestor);
|
|
}
|
|
}
|
|
|
|
// If we cannot insert a <p>/<div> element at the selection, we should insert
|
|
// a <br> element instead.
|
|
if (insertBRElement) {
|
|
nsresult rv = InsertBRElement(atStartOfSelection);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertBRElement() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
|
|
if (editingHost == blockElement && separator != ParagraphSeparator::br) {
|
|
// Insert a new block first
|
|
MOZ_ASSERT(separator == ParagraphSeparator::div ||
|
|
separator == ParagraphSeparator::p);
|
|
// FormatBlockContainerWithTransaction() creates AutoSelectionRestorer.
|
|
// Therefore, even if it returns NS_OK, editor might have been destroyed
|
|
// at restoring Selection.
|
|
nsresult rv = FormatBlockContainerWithTransaction(
|
|
MOZ_KnownLive(HTMLEditor::ToParagraphSeparatorTagName(separator)));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED) ||
|
|
NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
// We warn on failure, but don't handle it, because it might be harmless.
|
|
// Instead we just check that a new block was actually created.
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::FormatBlockContainerWithTransaction() "
|
|
"failed, but ignored");
|
|
|
|
firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
atStartOfSelection = firstRange->StartRef();
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
MOZ_ASSERT(atStartOfSelection.IsSetAndValid());
|
|
|
|
blockElement =
|
|
atStartOfSelection.IsInContentNode()
|
|
? HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*atStartOfSelection.ContainerAsContent(), editingHost)
|
|
: nullptr;
|
|
if (NS_WARN_IF(!blockElement)) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
}
|
|
if (NS_WARN_IF(blockElement == editingHost)) {
|
|
// Didn't create a new block for some reason, fall back to <br>
|
|
rv = InsertBRElement(atStartOfSelection);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertBRElement() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
// Now, mNewBlockElement is last created block element for wrapping inline
|
|
// elements around the caret position and AfterEditInner() will move
|
|
// caret into it. However, it may be different from block parent of
|
|
// the caret position. E.g., FormatBlockContainerWithTransaction() may
|
|
// wrap following inline elements of a <br> element which is next sibling
|
|
// of container of the caret. So, we need to adjust mNewBlockElement here
|
|
// for avoiding jumping caret to odd position.
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = blockElement;
|
|
}
|
|
|
|
// If block is empty, populate with br. (For example, imagine a div that
|
|
// contains the word "text". The user selects "text" and types return.
|
|
// "Text" is deleted leaving an empty block. We want to put in one br to
|
|
// make block have a line. Then code further below will put in a second br.)
|
|
if (IsEmptyBlockElement(*blockElement, IgnoreSingleBR::No)) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(atStartOfSelection);
|
|
EditorDOMPoint endOfBlockParent;
|
|
endOfBlockParent.SetToEndOf(blockElement);
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(endOfBlockParent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> listItem = GetNearestAncestorListItemElement(*blockElement);
|
|
if (listItem && listItem != editingHost) {
|
|
nsresult rv = HandleInsertParagraphInListItemElement(
|
|
*listItem, MOZ_KnownLive(*atStartOfSelection.GetContainer()),
|
|
atStartOfSelection.Offset());
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleInsertParagraphInListItemElement() "
|
|
"failed, but ignored");
|
|
return EditActionHandled();
|
|
}
|
|
|
|
if (HTMLEditUtils::IsHeader(*blockElement)) {
|
|
// Headers: close (or split) header
|
|
nsresult rv = HandleInsertParagraphInHeadingElement(
|
|
*blockElement, MOZ_KnownLive(*atStartOfSelection.GetContainer()),
|
|
atStartOfSelection.Offset());
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleInsertParagraphInHeadingElement() "
|
|
"failed, but ignored");
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// XXX Ideally, we should take same behavior with both <p> container and
|
|
// <div> container. However, we are still using <br> as default
|
|
// paragraph separator (non-standard) and we've split only <p> container
|
|
// long time. Therefore, some web apps may depend on this behavior like
|
|
// Gmail. So, let's use traditional odd behavior only when the default
|
|
// paragraph separator is <br>. Otherwise, take consistent behavior
|
|
// between <p> container and <div> container.
|
|
if ((separator == ParagraphSeparator::br &&
|
|
blockElement->IsHTMLElement(nsGkAtoms::p)) ||
|
|
(separator != ParagraphSeparator::br &&
|
|
blockElement->IsAnyOfHTMLElements(nsGkAtoms::p, nsGkAtoms::div))) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(atStartOfSelection);
|
|
// Paragraphs: special rules to look for <br>s
|
|
EditActionResult result = HandleInsertParagraphInParagraph(*blockElement);
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::HandleInsertParagraphInParagraph() failed");
|
|
return result;
|
|
}
|
|
if (result.Handled()) {
|
|
// Now, atStartOfSelection may be invalid because the left paragraph
|
|
// may have less children than its offset. For avoiding warnings of
|
|
// validation of EditorDOMPoint, we should not touch it anymore.
|
|
lockOffset.Cancel();
|
|
return result;
|
|
}
|
|
// Fall through, if HandleInsertParagraphInParagraph() didn't handle it.
|
|
MOZ_ASSERT(!result.Canceled(),
|
|
"HandleInsertParagraphInParagraph() canceled this edit action, "
|
|
"InsertParagraphSeparatorAsSubAction() needs to handle this "
|
|
"action instead");
|
|
}
|
|
|
|
// If nobody handles this edit action, let's insert new <br> at the selection.
|
|
rv = InsertBRElement(atStartOfSelection);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertBRElement() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
|
|
nsresult HTMLEditor::InsertBRElement(const EditorDOMPoint& aPointToBreak) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(!aPointToBreak.IsSet())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
bool brElementIsAfterBlock = false, brElementIsBeforeBlock = false;
|
|
|
|
// First, insert a <br> element.
|
|
RefPtr<Element> brElement;
|
|
if (IsPlaintextEditor()) {
|
|
brElement = InsertBRElementWithTransaction(aPointToBreak);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
} else {
|
|
EditorDOMPoint pointToBreak(aPointToBreak);
|
|
WSRunObject wsObj(*this, pointToBreak);
|
|
brElementIsAfterBlock =
|
|
wsObj.ScanPreviousVisibleNodeOrBlockBoundaryFrom(pointToBreak)
|
|
.ReachedBlockBoundary();
|
|
brElementIsBeforeBlock =
|
|
wsObj.ScanNextVisibleNodeOrBlockBoundaryFrom(pointToBreak)
|
|
.ReachedBlockBoundary();
|
|
// If the container of the break is a link, we need to split it and
|
|
// insert new <br> between the split links.
|
|
RefPtr<Element> linkNode =
|
|
HTMLEditor::GetLinkElement(pointToBreak.GetContainer());
|
|
if (linkNode) {
|
|
SplitNodeResult splitLinkNodeResult = SplitNodeDeepWithTransaction(
|
|
*linkNode, pointToBreak, SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitLinkNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
return splitLinkNodeResult.Rv();
|
|
}
|
|
pointToBreak = splitLinkNodeResult.SplitPoint();
|
|
}
|
|
brElement = wsObj.InsertBreak(MOZ_KnownLive(*SelectionRefPtr()),
|
|
pointToBreak, nsIEditor::eNone);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("WSRunObject::InsertBreak(eNone) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
// If the <br> element has already been removed from the DOM tree by a
|
|
// mutation event listener, don't continue handling this.
|
|
if (NS_WARN_IF(!brElement->GetParentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (brElementIsAfterBlock && brElementIsBeforeBlock) {
|
|
// We just placed a <br> between block boundaries. This is the one case
|
|
// where we want the selection to be before the br we just placed, as the
|
|
// br will be on a new line, rather than at end of prior line.
|
|
// XXX brElementIsAfterBlock and brElementIsBeforeBlock were set before
|
|
// modifying the DOM tree. So, now, the <br> element may not be
|
|
// between blocks.
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(brElement));
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditorDOMPoint afterBRElement(brElement);
|
|
DebugOnly<bool> advanced = afterBRElement.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset after the new <br> element");
|
|
WSScanResult forwardScanFromAfterBRElementResult =
|
|
WSRunScanner::ScanNextVisibleNodeOrBlockBoundary(*this, afterBRElement);
|
|
if (forwardScanFromAfterBRElementResult.ReachedBRElement()) {
|
|
// The next thing after the break we inserted is another break. Move the
|
|
// second break to be the first break's sibling. This will prevent them
|
|
// from being in different inline nodes, which would break
|
|
// SetInterlinePosition(). It will also assure that if the user clicks
|
|
// away and then clicks back on their new blank line, they will still get
|
|
// the style from the line above.
|
|
if (brElement->GetNextSibling() !=
|
|
forwardScanFromAfterBRElementResult.BRElementPtr()) {
|
|
MOZ_ASSERT(forwardScanFromAfterBRElementResult.BRElementPtr());
|
|
nsresult rv = MoveNodeWithTransaction(
|
|
MOZ_KnownLive(*forwardScanFromAfterBRElementResult.BRElementPtr()),
|
|
afterBRElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
// SetInterlinePosition(true) means we want the caret to stick to the
|
|
// content on the "right". We want the caret to stick to whatever is past
|
|
// the break. This is because the break is on the same line we were on,
|
|
// but the next content will be on the following line.
|
|
|
|
// An exception to this is if the break has a next sibling that is a block
|
|
// node. Then we stick to the left to avoid an uber caret.
|
|
nsIContent* nextSiblingOfBRElement = brElement->GetNextSibling();
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(
|
|
!(nextSiblingOfBRElement &&
|
|
HTMLEditUtils::IsBlockElement(*nextSiblingOfBRElement)),
|
|
ignoredError);
|
|
NS_WARNING_ASSERTION(!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition() failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(afterBRElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::SplitMailCiteElements(
|
|
const EditorDOMPoint& aPointToSplit) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aPointToSplit.IsSet());
|
|
|
|
RefPtr<Element> citeNode =
|
|
GetMostAncestorMailCiteElement(*aPointToSplit.GetContainer());
|
|
if (!citeNode) {
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
EditorDOMPoint pointToSplit(aPointToSplit);
|
|
|
|
// If our selection is just before a break, nudge it to be just after it.
|
|
// This does two things for us. It saves us the trouble of having to add
|
|
// a break here ourselves to preserve the "blockness" of the inline span
|
|
// mailquote (in the inline case), and :
|
|
// it means the break won't end up making an empty line that happens to be
|
|
// inside a mailquote (in either inline or block case).
|
|
// The latter can confuse a user if they click there and start typing,
|
|
// because being in the mailquote may affect wrapping behavior, or font
|
|
// color, etc.
|
|
WSScanResult forwardScanFromPointToSplitResult =
|
|
WSRunScanner::ScanNextVisibleNodeOrBlockBoundary(*this, pointToSplit);
|
|
// If selection start point is before a break and it's inside the mailquote,
|
|
// let's split it after the visible node.
|
|
if (forwardScanFromPointToSplitResult.ReachedBRElement() &&
|
|
forwardScanFromPointToSplitResult.BRElementPtr() != citeNode &&
|
|
citeNode->Contains(forwardScanFromPointToSplitResult.BRElementPtr())) {
|
|
pointToSplit = forwardScanFromPointToSplitResult.PointAfterContent();
|
|
}
|
|
|
|
if (NS_WARN_IF(!pointToSplit.GetContainerAsContent())) {
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
SplitNodeResult splitCiteNodeResult = SplitNodeDeepWithTransaction(
|
|
*citeNode, pointToSplit, SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (splitCiteNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
return EditActionIgnored(splitCiteNodeResult.Rv());
|
|
}
|
|
pointToSplit.Clear();
|
|
|
|
// Add an invisible <br> to the end of current cite node (If new left cite
|
|
// has not been created, we're at the end of it. Otherwise, we're still at
|
|
// the right node) if it was a <span> of style="display: block". This is
|
|
// important, since when serializing the cite to plain text, the span which
|
|
// caused the visual break is discarded. So the added <br> will guarantee
|
|
// that the serializer will insert a break where the user saw one.
|
|
// FYI: splitCiteNodeResult grabs the previous node with nsCOMPtr. So, it's
|
|
// safe to access previousNodeOfSplitPoint even after changing the DOM
|
|
// tree and/or selection even though it's raw pointer.
|
|
nsIContent* previousNodeOfSplitPoint = splitCiteNodeResult.GetPreviousNode();
|
|
if (previousNodeOfSplitPoint &&
|
|
previousNodeOfSplitPoint->IsHTMLElement(nsGkAtoms::span) &&
|
|
previousNodeOfSplitPoint->GetPrimaryFrame() &&
|
|
previousNodeOfSplitPoint->GetPrimaryFrame()->IsBlockFrameOrSubclass()) {
|
|
nsCOMPtr<nsINode> lastChild = previousNodeOfSplitPoint->GetLastChild();
|
|
if (lastChild && !lastChild->IsHTMLElement(nsGkAtoms::br)) {
|
|
// We ignore the result here.
|
|
EditorDOMPoint endOfPreviousNodeOfSplitPoint;
|
|
endOfPreviousNodeOfSplitPoint.SetToEndOf(previousNodeOfSplitPoint);
|
|
RefPtr<Element> invisibleBRElement =
|
|
InsertBRElementWithTransaction(endOfPreviousNodeOfSplitPoint);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
invisibleBRElement,
|
|
"HTMLEditor::InsertBRElementWithTransaction() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
// In most cases, <br> should be inserted after current cite. However, if
|
|
// left cite hasn't been created because the split point was start of the
|
|
// cite node, <br> should be inserted before the current cite.
|
|
EditorDOMPoint pointToInsertBRNode(splitCiteNodeResult.SplitPoint());
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(pointToInsertBRNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
// Now, offset of pointToInsertBRNode is invalid. Let's clear it.
|
|
pointToInsertBRNode.Clear();
|
|
|
|
// Want selection before the break, and on same line.
|
|
EditorDOMPoint atBRElement(brElement);
|
|
{
|
|
AutoEditorDOMPointChildInvalidator lockOffset(atBRElement);
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(atBRElement);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
}
|
|
|
|
// if citeNode wasn't a block, we might also want another break before it.
|
|
// We need to examine the content both before the br we just added and also
|
|
// just after it. If we don't have another br or block boundary adjacent,
|
|
// then we will need a 2nd br added to achieve blank line that user expects.
|
|
if (HTMLEditUtils::IsInlineElement(*citeNode)) {
|
|
// Use DOM point which we tried to collapse to.
|
|
EditorDOMPoint pointToCreateNewBRElement(atBRElement);
|
|
|
|
WSScanResult backwardScanFromPointToCreateNewBRElementResult =
|
|
WSRunScanner::ScanPreviousVisibleNodeOrBlockBoundary(
|
|
*this, pointToCreateNewBRElement);
|
|
if (backwardScanFromPointToCreateNewBRElementResult
|
|
.InNormalWhiteSpacesOrText() ||
|
|
backwardScanFromPointToCreateNewBRElementResult
|
|
.ReachedSpecialContent()) {
|
|
EditorRawDOMPoint pointAfterNewBRElement(
|
|
EditorRawDOMPoint::After(pointToCreateNewBRElement));
|
|
NS_WARNING_ASSERTION(pointAfterNewBRElement.IsSet(),
|
|
"Failed to set to after the <br> node");
|
|
WSScanResult forwardScanFromPointAfterNewBRElementResult =
|
|
WSRunScanner::ScanNextVisibleNodeOrBlockBoundary(
|
|
*this, pointAfterNewBRElement);
|
|
if (forwardScanFromPointAfterNewBRElementResult
|
|
.InNormalWhiteSpacesOrText() ||
|
|
forwardScanFromPointAfterNewBRElementResult.ReachedSpecialContent() ||
|
|
// In case we're at the very end.
|
|
forwardScanFromPointAfterNewBRElementResult
|
|
.ReachedCurrentBlockBoundary()) {
|
|
brElement = InsertBRElementWithTransaction(pointToCreateNewBRElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return EditActionIgnored(NS_ERROR_FAILURE);
|
|
}
|
|
// Now, those points may be invalid.
|
|
pointToCreateNewBRElement.Clear();
|
|
pointAfterNewBRElement.Clear();
|
|
}
|
|
}
|
|
}
|
|
|
|
// delete any empty cites
|
|
if (previousNodeOfSplitPoint &&
|
|
IsEmptyNode(*previousNodeOfSplitPoint, true, false)) {
|
|
nsresult rv =
|
|
DeleteNodeWithTransaction(MOZ_KnownLive(*previousNodeOfSplitPoint));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
}
|
|
|
|
if (citeNode && IsEmptyNode(*citeNode, true, false)) {
|
|
nsresult rv = DeleteNodeWithTransaction(*citeNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
}
|
|
|
|
return EditActionHandled();
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteSelection(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aStripWrappers == nsIEditor::eStrip ||
|
|
aStripWrappers == nsIEditor::eNoStrip);
|
|
|
|
EditActionResult result =
|
|
HandleDeleteSelectionInternal(aDirectionAndAmount, aStripWrappers);
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteSelectionInternal() failed");
|
|
return result;
|
|
}
|
|
if (!result.Handled()) {
|
|
// If it's just ignored, we should fall this back to
|
|
// `DeleteSelectionWithTransaction()`.
|
|
nsresult rv =
|
|
DeleteSelectionWithTransaction(aDirectionAndAmount, aStripWrappers);
|
|
if (rv == NS_ERROR_EDITOR_DESTROYED) {
|
|
NS_WARNING(
|
|
"EditorBase::DeleteSelectionWithTransaction() caused destroying the "
|
|
"editor");
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"EditorBase::DeleteSelectionWithTransaction() failed, but ignored");
|
|
}
|
|
|
|
EditorDOMPoint atNewStartOfSelection(
|
|
EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!atNewStartOfSelection.IsSet())) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
if (atNewStartOfSelection.GetContainerAsContent()) {
|
|
nsresult rv = DeleteMostAncestorMailCiteElementIfEmpty(
|
|
MOZ_KnownLive(*atNewStartOfSelection.GetContainerAsContent()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::DeleteMostAncestorMailCiteElementIfEmpty() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteSelectionInternal(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aStripWrappers == nsIEditor::eStrip ||
|
|
aStripWrappers == nsIEditor::eNoStrip);
|
|
|
|
// Remember that we did a selection deletion. Used by
|
|
// CreateStyleForInsertText()
|
|
TopLevelEditSubActionDataRef().mDidDeleteSelection = true;
|
|
|
|
// If there is only padding `<br>` element for empty editor, cancel the
|
|
// operation.
|
|
if (mPaddingBRElementForEmptyEditor) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// First check for table selection mode. If so, hand off to table editor.
|
|
ErrorResult error;
|
|
if (RefPtr<Element> cellElement = GetFirstSelectedTableCellElement(error)) {
|
|
error.SuppressException();
|
|
nsresult rv = DeleteTableCellContentsWithTransaction();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteTableCellContentsWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// Only when there is no selection range, GetFirstSelectedTableCellElement()
|
|
// returns error and in this case, anyway we cannot handle delete selection.
|
|
// So, let's return error here even though we haven't handled this.
|
|
if (error.Failed()) {
|
|
NS_WARNING("HTMLEditor::GetFirstSelectedTableCellElement() failed");
|
|
return EditActionResult(error.StealNSResult());
|
|
}
|
|
|
|
// selectionWasCollapsed is used later to determine whether we should join
|
|
// blocks in HandleDeleteNonCollapasedSelection(). We don't really care
|
|
// about collapsed because it will be modified by ExtendSelectionForDelete()
|
|
// later. TryToJoinBlocksWithTransaction() should happen if the original
|
|
// selection is collapsed and the cursor is at the end of a block element,
|
|
// in which case ExtendSelectionForDelete() would always make the selection
|
|
// not collapsed.
|
|
SelectionWasCollapsed selectionWasCollapsed = SelectionRefPtr()->IsCollapsed()
|
|
? SelectionWasCollapsed::Yes
|
|
: SelectionWasCollapsed::No;
|
|
|
|
if (selectionWasCollapsed == SelectionWasCollapsed::Yes) {
|
|
EditorDOMPoint startPoint(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!startPoint.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// If we are inside an empty block, delete it.
|
|
RefPtr<Element> editingHost = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!editingHost)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (startPoint.GetContainerAsContent()) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(startPoint);
|
|
|
|
EditActionResult result = MaybeDeleteTopMostEmptyAncestor(
|
|
MOZ_KnownLive(*startPoint.GetContainerAsContent()), *editingHost,
|
|
aDirectionAndAmount);
|
|
if (result.Failed() || result.Handled()) {
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::MaybeDeleteTopMostEmptyAncestor() failed");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// Test for distance between caret and text that will be deleted
|
|
EditActionResult result =
|
|
SetCaretBidiLevelForDeletion(startPoint, aDirectionAndAmount);
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING("EditorBase::SetCaretBidiLevelForDeletion() failed");
|
|
return result;
|
|
}
|
|
|
|
// ExtendSelectionForDelete will use selection controller to set
|
|
// selection for delete. But if focus event doesn't receive yet,
|
|
// ancestor isn't set. So we must set root eleement of editor to
|
|
// ancestor.
|
|
AutoSetTemporaryAncestorLimiter autoSetter(*this, *SelectionRefPtr(),
|
|
*startPoint.GetContainer());
|
|
|
|
nsresult rv = ExtendSelectionForDelete(&aDirectionAndAmount);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("TextEditor::ExtendSelectionForDelete() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
|
|
if (aDirectionAndAmount == nsIEditor::eNone) {
|
|
// If we're not called recursively, we should call
|
|
// `DeleteSelectionWithTransaction()` here, but we cannot detect it for
|
|
// now. Therefore, we should just tell the caller of that we does
|
|
// nothing.
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
if (SelectionRefPtr()->IsCollapsed()) {
|
|
EditActionResult result = HandleDeleteAroundCollapsedSelection(
|
|
aDirectionAndAmount, aStripWrappers);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteAroundCollapsedSelection() failed");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
EditActionResult result = HandleDeleteNonCollapsedSelection(
|
|
aDirectionAndAmount, aStripWrappers, selectionWasCollapsed);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteNonCollapasedSelection() failed");
|
|
return result;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteAroundCollapsedSelection(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
MOZ_ASSERT(aDirectionAndAmount != nsIEditor::eNone);
|
|
|
|
EditorDOMPoint startPoint(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!startPoint.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// What's in the direction we are deleting?
|
|
WSRunObject wsObj(*this, startPoint);
|
|
WSScanResult scanFromStartPointResult =
|
|
aDirectionAndAmount == nsIEditor::eNext
|
|
? wsObj.ScanNextVisibleNodeOrBlockBoundaryFrom(startPoint)
|
|
: wsObj.ScanPreviousVisibleNodeOrBlockBoundaryFrom(startPoint);
|
|
if (!scanFromStartPointResult.GetContent()) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
if (scanFromStartPointResult.InNormalWhiteSpaces()) {
|
|
EditActionResult result =
|
|
HandleDeleteCollapsedSelectionAtWhiteSpaces(aDirectionAndAmount, wsObj);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDelectCollapsedSelectionAtWhiteSpaces() failed");
|
|
return result;
|
|
}
|
|
|
|
if (scanFromStartPointResult.InNormalText()) {
|
|
if (NS_WARN_IF(!scanFromStartPointResult.GetContent()->IsText())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
EditActionResult result = HandleDeleteCollapsedSelectionAtTextNode(
|
|
aDirectionAndAmount, scanFromStartPointResult.Point());
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteCollapsedSelectionAtTextNode() failed");
|
|
return result;
|
|
}
|
|
|
|
if (scanFromStartPointResult.ReachedSpecialContent() ||
|
|
scanFromStartPointResult.ReachedBRElement() ||
|
|
scanFromStartPointResult.ReachedHRElement()) {
|
|
EditActionResult result = HandleDeleteCollapsedSelectionAtAtomicContent(
|
|
aDirectionAndAmount, aStripWrappers,
|
|
MOZ_KnownLive(*scanFromStartPointResult.GetContent()), startPoint,
|
|
wsObj);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteCollapsedSelectionAtAtomicContent() failed");
|
|
return result;
|
|
}
|
|
|
|
if (scanFromStartPointResult.ReachedOtherBlockElement()) {
|
|
if (NS_WARN_IF(!scanFromStartPointResult.GetContent()->IsElement())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
EditActionResult result =
|
|
HandleDeleteCollapsedSelectionAtOtherBlockBoundary(
|
|
aDirectionAndAmount, aStripWrappers,
|
|
MOZ_KnownLive(*scanFromStartPointResult.ElementPtr()), startPoint,
|
|
wsObj);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteCollapsedSelectionAtOtherBlockBoundary() "
|
|
"failed");
|
|
return result;
|
|
}
|
|
|
|
if (scanFromStartPointResult.ReachedCurrentBlockBoundary()) {
|
|
if (NS_WARN_IF(!scanFromStartPointResult.GetContent()->IsElement())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
EditActionResult result =
|
|
HandleDeleteCollapsedSelectionAtCurrentBlockBoundary(
|
|
aDirectionAndAmount,
|
|
MOZ_KnownLive(*scanFromStartPointResult.ElementPtr()), startPoint);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::HandleDeleteCollapsedSelectionAtCurrentBlockBoundary() "
|
|
"failed");
|
|
return result;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("New type of reached content hasn't been handled yet");
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteCollapsedSelectionAtWhiteSpaces(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
WSRunObject& aWSRunObjectAtCaret) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (aDirectionAndAmount == nsIEditor::eNext) {
|
|
nsresult rv = aWSRunObjectAtCaret.DeleteWSForward();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::DeleteWSForward() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
} else {
|
|
nsresult rv = aWSRunObjectAtCaret.DeleteWSBackward();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::DeleteWSBackward() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
nsresult rv = InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary(
|
|
EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary() "
|
|
"failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteCollapsedSelectionAtTextNode(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
const EditorDOMPoint& aPointToDelete) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(aPointToDelete.IsSet());
|
|
MOZ_ASSERT(aPointToDelete.IsInTextNode());
|
|
|
|
OwningNonNull<Text> visibleTextNode = *aPointToDelete.GetContainerAsText();
|
|
EditorDOMPoint startToDelete, endToDelete;
|
|
if (aDirectionAndAmount == nsIEditor::ePrevious) {
|
|
if (aPointToDelete.IsStartOfContainer()) {
|
|
return EditActionResult(NS_ERROR_UNEXPECTED);
|
|
}
|
|
startToDelete = aPointToDelete.PreviousPoint();
|
|
endToDelete = aPointToDelete;
|
|
// Bug 1068979: delete both codepoints if surrogate pair
|
|
if (!startToDelete.IsStartOfContainer()) {
|
|
const nsTextFragment* text = &visibleTextNode->TextFragment();
|
|
if (text->IsLowSurrogateFollowingHighSurrogateAt(
|
|
startToDelete.Offset())) {
|
|
startToDelete.RewindOffset();
|
|
}
|
|
}
|
|
} else {
|
|
RefPtr<nsRange> range = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!range) ||
|
|
NS_WARN_IF(range->GetStartContainer() !=
|
|
aPointToDelete.GetContainer()) ||
|
|
NS_WARN_IF(range->GetEndContainer() != aPointToDelete.GetContainer())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
startToDelete = range->StartRef();
|
|
endToDelete = range->EndRef();
|
|
}
|
|
nsresult rv =
|
|
WSRunObject::PrepareToDeleteRange(*this, &startToDelete, &endToDelete);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToDeleteRange() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
if (MaybeHasMutationEventListeners(
|
|
NS_EVENT_BITS_MUTATION_NODEREMOVED |
|
|
NS_EVENT_BITS_MUTATION_NODEREMOVEDFROMDOCUMENT |
|
|
NS_EVENT_BITS_MUTATION_ATTRMODIFIED |
|
|
NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED) &&
|
|
(NS_WARN_IF(!startToDelete.IsSetAndValid()) ||
|
|
NS_WARN_IF(!startToDelete.IsInTextNode()) ||
|
|
NS_WARN_IF(!endToDelete.IsSetAndValid()) ||
|
|
NS_WARN_IF(!endToDelete.IsInTextNode()) ||
|
|
NS_WARN_IF(startToDelete.ContainerAsText() != visibleTextNode) ||
|
|
NS_WARN_IF(endToDelete.ContainerAsText() != visibleTextNode) ||
|
|
NS_WARN_IF(startToDelete.Offset() >= endToDelete.Offset()))) {
|
|
NS_WARNING("Mutation event listener changed the DOM tree");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
rv = DeleteTextWithTransaction(visibleTextNode, startToDelete.Offset(),
|
|
endToDelete.Offset() - startToDelete.Offset());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteTextWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// XXX When Backspace key is pressed, Chromium removes following empty
|
|
// text nodes when removing the last character of the non-empty text
|
|
// node. However, Edge never removes empty text nodes even if
|
|
// selection is in the following empty text node(s). For now, we
|
|
// should keep our traditional behavior same as Edge for backward
|
|
// compatibility.
|
|
// XXX When Delete key is pressed, Edge removes all preceding empty
|
|
// text nodes when removing the first character of the non-empty
|
|
// text node. Chromium removes only selected empty text node and
|
|
// following empty text nodes and the first character of the
|
|
// non-empty text node. For now, we should keep our traditional
|
|
// behavior same as Chromium for backward compatibility.
|
|
|
|
rv = DeleteNodeIfInvisibleAndEditableTextNode(visibleTextNode);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeIfInvisibleAndEditableTextNode() "
|
|
"failed, but ignored");
|
|
|
|
// XXX `Selection` may be modified by mutation event listeners so
|
|
// that we should use EditorDOMPoint::AtEndOf(visibleTextNode)
|
|
// instead. (Perhaps, we don't and/or shouldn't need to do this
|
|
// if the text node is preformatted.)
|
|
rv = InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary(
|
|
EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary()"
|
|
" failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// Remember that we did a ranged delete for the benefit of
|
|
// AfterEditInner().
|
|
TopLevelEditSubActionDataRef().mDidDeleteNonCollapsedRange = true;
|
|
|
|
return EditActionHandled();
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteCollapsedSelectionAtAtomicContent(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers, nsIContent& aAtomicContent,
|
|
const EditorDOMPoint& aCaretPoint, WSRunScanner& aWSRunScannerAtCaret) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aCaretPoint.IsSet());
|
|
|
|
// If the atomic element is editing host, we should do nothing.
|
|
if (&aAtomicContent == aWSRunScannerAtCaret.GetEditingHost()) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// Short circuit for invisible breaks. delete them and recurse.
|
|
if (aAtomicContent.IsHTMLElement(nsGkAtoms::br) &&
|
|
!IsVisibleBRElement(&aAtomicContent)) {
|
|
nsresult rv = DeleteNodeWithTransaction(aAtomicContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// XXX This nesting call is not safe. If mutation event listener
|
|
// creates same situation, this causes stack-overflow.
|
|
EditActionResult result =
|
|
HandleDeleteSelectionInternal(aDirectionAndAmount, aStripWrappers);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::Nested HandleDeleteSelectionInternal() failed");
|
|
return result;
|
|
}
|
|
|
|
// Special handling for backspace when positioned after <hr>
|
|
if (aDirectionAndAmount == nsIEditor::ePrevious &&
|
|
aAtomicContent.IsHTMLElement(nsGkAtoms::hr)) {
|
|
// Only if the caret is positioned at the end-of-hr-line position, we
|
|
// want to delete the <hr>.
|
|
//
|
|
// In other words, we only want to delete, if our selection position
|
|
// (indicated by aCaretPoint) is the position directly
|
|
// after the <hr>, on the same line as the <hr>.
|
|
//
|
|
// To detect this case we check:
|
|
// aCaretPoint's container == parent of `<hr>` element
|
|
// and
|
|
// aCaretPoint's offset -1 == `<hr>` element offset
|
|
// and
|
|
// interline position is false (left)
|
|
//
|
|
// In any other case we set the position to aCaretPoint's container -1
|
|
// and interlineposition to false, only moving the caret to the
|
|
// end-of-hr-line position.
|
|
bool moveOnly = true;
|
|
|
|
EditorRawDOMPoint atHRElement(&aAtomicContent);
|
|
|
|
ErrorResult error;
|
|
bool interLineIsRight = SelectionRefPtr()->GetInterlinePosition(error);
|
|
if (error.Failed()) {
|
|
NS_WARNING("Selection::GetInterlinePosition() failed");
|
|
return EditActionResult(error.StealNSResult());
|
|
}
|
|
|
|
if (aCaretPoint.GetContainer() == atHRElement.GetContainer() &&
|
|
aCaretPoint.Offset() - 1 == atHRElement.Offset() && !interLineIsRight) {
|
|
moveOnly = false;
|
|
}
|
|
|
|
if (moveOnly) {
|
|
// Go to the position after the <hr>, but to the end of the <hr> line
|
|
// by setting the interline position to left.
|
|
EditorDOMPoint atNextOfHRElement(EditorDOMPoint::After(aAtomicContent));
|
|
NS_WARNING_ASSERTION(atNextOfHRElement.IsSet(),
|
|
"Failed to set after <hr> element");
|
|
|
|
{
|
|
AutoEditorDOMPointChildInvalidator lockOffset(atNextOfHRElement);
|
|
|
|
nsresult rv = CollapseSelectionTo(atNextOfHRElement);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
}
|
|
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(false, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(false) failed, but ignored");
|
|
TopLevelEditSubActionDataRef().mDidExplicitlySetInterLine = true;
|
|
|
|
// There is one exception to the move only case. If the <hr> is
|
|
// followed by a <br> we want to delete the <br>.
|
|
|
|
WSScanResult forwardScanFromCaretResult =
|
|
aWSRunScannerAtCaret.ScanNextVisibleNodeOrBlockBoundaryFrom(
|
|
aCaretPoint);
|
|
if (!forwardScanFromCaretResult.ReachedBRElement()) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// Delete the <br>
|
|
nsresult rv = WSRunObject::PrepareToDeleteNode(
|
|
*this, MOZ_KnownLive(forwardScanFromCaretResult.BRElementPtr()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToDeleteNode() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
rv = DeleteNodeWithTransaction(
|
|
MOZ_KnownLive(*forwardScanFromCaretResult.BRElementPtr()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
// Else continue with normal delete code
|
|
}
|
|
|
|
// Found break or image, or hr.
|
|
// XXX Oddly, this requires `MOZ_KnownLive()` for `&aAtomicContent` here...
|
|
nsresult rv =
|
|
WSRunObject::PrepareToDeleteNode(*this, MOZ_KnownLive(&aAtomicContent));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToDeleteNode() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// Remember sibling to visnode, if any
|
|
nsCOMPtr<nsIContent> previousEditableSibling =
|
|
GetPriorHTMLSibling(&aAtomicContent);
|
|
// Delete the node, and join like nodes if appropriate
|
|
rv = DeleteNodeWithTransaction(aAtomicContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// Is there a prior node and are they siblings?
|
|
nsCOMPtr<nsINode> nextEditableSibling;
|
|
if (previousEditableSibling) {
|
|
nextEditableSibling = GetNextHTMLSibling(previousEditableSibling);
|
|
}
|
|
// Are they both text nodes? If so, join them!
|
|
// XXX This may cause odd behavior if there is non-editable nodes
|
|
// around the atomic content.
|
|
if (aCaretPoint.GetContainer() == nextEditableSibling &&
|
|
aCaretPoint.GetContainerAsText() &&
|
|
previousEditableSibling->GetAsText()) {
|
|
EditorDOMPoint atFirstChildOfRightNode;
|
|
nsresult rv = JoinNearestEditableNodesWithTransaction(
|
|
*previousEditableSibling,
|
|
MOZ_KnownLive(*aCaretPoint.GetContainerAsContent()),
|
|
&atFirstChildOfRightNode);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::JoinNearestEditableNodesWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
if (!atFirstChildOfRightNode.IsSet()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::JoinNearestEditableNodesWithTransaction() didn't return "
|
|
"right node position");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
// Fix up selection
|
|
rv = CollapseSelectionTo(atFirstChildOfRightNode);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
rv = InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary(
|
|
EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary() "
|
|
"failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteCollapsedSelectionAtOtherBlockBoundary(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers, Element& aOtherBlockElement,
|
|
const EditorDOMPoint& aCaretPoint, WSRunScanner& aWSRunScannerAtCaret) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aCaretPoint.IsSet());
|
|
|
|
// Make sure it's not a table element. If so, cancel the operation
|
|
// (translation: users cannot backspace or delete across table cells)
|
|
if (HTMLEditUtils::IsTableElement(&aOtherBlockElement)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// Next to a block. See if we are between a block and a br. If so, we
|
|
// really want to delete the br. Else join content at selection to the
|
|
// block.
|
|
WSScanResult scanFromCaretResult =
|
|
aDirectionAndAmount == nsIEditor::eNext
|
|
? aWSRunScannerAtCaret.ScanPreviousVisibleNodeOrBlockBoundaryFrom(
|
|
aCaretPoint)
|
|
: aWSRunScannerAtCaret.ScanNextVisibleNodeOrBlockBoundaryFrom(
|
|
aCaretPoint);
|
|
|
|
// First find the adjacent node in the block
|
|
nsCOMPtr<nsIContent> leafNode;
|
|
nsCOMPtr<nsINode> leftNode, rightNode;
|
|
if (aDirectionAndAmount == nsIEditor::ePrevious) {
|
|
leafNode = GetLastEditableLeaf(aOtherBlockElement);
|
|
leftNode = leafNode;
|
|
rightNode = aCaretPoint.GetContainer();
|
|
} else {
|
|
leafNode = GetFirstEditableLeaf(aOtherBlockElement);
|
|
leftNode = aCaretPoint.GetContainer();
|
|
rightNode = leafNode;
|
|
}
|
|
|
|
bool didBRElementDeleted = false;
|
|
if (scanFromCaretResult.ReachedBRElement()) {
|
|
nsresult rv = DeleteNodeWithTransaction(
|
|
MOZ_KnownLive(*scanFromCaretResult.BRElementPtr()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
didBRElementDeleted = true;
|
|
}
|
|
|
|
// Don't cross table boundaries
|
|
if (leftNode && rightNode &&
|
|
HTMLEditor::NodesInDifferentTableElements(*leftNode, *rightNode)) {
|
|
// If we have not deleted `<br>` element and are not called recursively,
|
|
// we should call `DeleteSelectionWithTransaction()` here, but we cannot
|
|
// detect it for now. Therefore, we should just tell the caller of that
|
|
// we does nothing.
|
|
return didBRElementDeleted ? EditActionHandled() : EditActionIgnored();
|
|
}
|
|
|
|
if (didBRElementDeleted) {
|
|
// Put selection at edge of block and we are done.
|
|
if (NS_WARN_IF(!leafNode)) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
EditorDOMPoint newSel =
|
|
GetGoodCaretPointFor(*leafNode, aDirectionAndAmount);
|
|
if (!newSel.IsSet()) {
|
|
NS_WARNING("HTMLEditor::GetGoodCaretPointFor() failed");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
nsresult rv = CollapseSelectionTo(newSel);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// Else we are joining content to block
|
|
EditActionResult result(NS_OK);
|
|
EditorDOMPoint pointToPutCaret(aCaretPoint);
|
|
{
|
|
AutoTrackDOMPoint tracker(RangeUpdaterRef(), &pointToPutCaret);
|
|
if (NS_WARN_IF(!leftNode) || NS_WARN_IF(!leftNode->IsContent()) ||
|
|
NS_WARN_IF(!rightNode) || NS_WARN_IF(!rightNode->IsContent())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
result |=
|
|
TryToJoinBlocksWithTransaction(MOZ_KnownLive(*leftNode->AsContent()),
|
|
MOZ_KnownLive(*rightNode->AsContent()));
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::TryToJoinBlocksWithTransaction() failed");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// If TryToJoinBlocksWithTransaction() didn't handle it and it's not
|
|
// canceled, user may want to modify the start leaf node or the last leaf
|
|
// node of the block.
|
|
if (!result.Handled() && !result.Canceled() &&
|
|
leafNode != aCaretPoint.GetContainer()) {
|
|
int32_t offset = aDirectionAndAmount == nsIEditor::ePrevious
|
|
? static_cast<int32_t>(leafNode->Length())
|
|
: 0;
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(leafNode, offset));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
EditActionResult result =
|
|
HandleDeleteSelectionInternal(aDirectionAndAmount, aStripWrappers);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"Recursive HTMLEditor::HandleDeleteSelectionInternal() failed");
|
|
return result;
|
|
}
|
|
|
|
// Otherwise, we must have deleted the selection as user expected.
|
|
nsresult rv = CollapseSelectionTo(pointToPutCaret);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
return result;
|
|
}
|
|
|
|
EditActionResult
|
|
HTMLEditor::HandleDeleteCollapsedSelectionAtCurrentBlockBoundary(
|
|
nsIEditor::EDirection aDirectionAndAmount, Element& aCurrentBlockElement,
|
|
const EditorDOMPoint& aCaretPoint) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// At edge of our block. Look beside it and see if we can join to an
|
|
// adjacent block
|
|
|
|
// Make sure it's not a table element. If so, cancel the operation
|
|
// (translation: users cannot backspace or delete across table cells)
|
|
if (HTMLEditUtils::IsTableElement(&aCurrentBlockElement)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// First find the relevant nodes
|
|
nsCOMPtr<nsINode> leftNode, rightNode;
|
|
if (aDirectionAndAmount == nsIEditor::ePrevious) {
|
|
leftNode = GetPreviousEditableHTMLNode(aCurrentBlockElement);
|
|
rightNode = aCaretPoint.GetContainer();
|
|
} else {
|
|
rightNode = GetNextEditableHTMLNode(aCurrentBlockElement);
|
|
leftNode = aCaretPoint.GetContainer();
|
|
}
|
|
|
|
// Nothing to join
|
|
if (!leftNode || !rightNode) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// Don't cross table boundaries -- cancel it
|
|
if (HTMLEditor::NodesInDifferentTableElements(*leftNode, *rightNode)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
EditActionResult result(NS_OK);
|
|
EditorDOMPoint pointToPutCaret(aCaretPoint);
|
|
{
|
|
AutoTrackDOMPoint tracker(RangeUpdaterRef(), &pointToPutCaret);
|
|
if (NS_WARN_IF(!leftNode->IsContent()) ||
|
|
NS_WARN_IF(!rightNode->IsContent())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
result |=
|
|
TryToJoinBlocksWithTransaction(MOZ_KnownLive(*leftNode->AsContent()),
|
|
MOZ_KnownLive(*rightNode->AsContent()));
|
|
// This should claim that trying to join the block means that
|
|
// this handles the action because the caller shouldn't do anything
|
|
// anymore in this case.
|
|
result.MarkAsHandled();
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::TryToJoinBlocksWithTransaction() failed");
|
|
return result;
|
|
}
|
|
}
|
|
nsresult rv = CollapseSelectionTo(pointToPutCaret);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
return result;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleDeleteNonCollapsedSelection(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
nsIEditor::EStripWrappers aStripWrappers,
|
|
SelectionWasCollapsed aSelectionWasCollapsed) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(!SelectionRefPtr()->IsCollapsed());
|
|
|
|
// Else we have a non-collapsed selection. First adjust the selection.
|
|
// XXX Why do we extend selection only when there is only one range?
|
|
if (SelectionRefPtr()->RangeCount() == 1) {
|
|
if (nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0)) {
|
|
RefPtr<StaticRange> extendedRange =
|
|
GetExtendedRangeToIncludeInvisibleNodes(*firstRange);
|
|
if (!extendedRange) {
|
|
NS_WARNING(
|
|
"HTMLEditor::GetExtendedRangeToIncludeInvisibleNodes() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
ErrorResult error;
|
|
MOZ_KnownLive(SelectionRefPtr())
|
|
->SetStartAndEndInLimiter(extendedRange->StartRef().AsRaw(),
|
|
extendedRange->EndRef().AsRaw(), error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING_ASSERTION(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED),
|
|
"Selection::SetStartAndEndInLimiter() failed");
|
|
return EditActionResult(error.StealNSResult());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Remember that we did a ranged delete for the benefit of AfterEditInner().
|
|
TopLevelEditSubActionDataRef().mDidDeleteNonCollapsedRange = true;
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
EditorDOMPoint firstRangeStart(firstRange->StartRef());
|
|
EditorDOMPoint firstRangeEnd(firstRange->EndRef());
|
|
if (NS_WARN_IF(!firstRangeStart.IsSet()) ||
|
|
NS_WARN_IF(!firstRangeEnd.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// Figure out if the endpoints are in nodes that can be merged. Adjust
|
|
// surrounding whitespace in preparation to delete selection.
|
|
if (!IsPlaintextEditor()) {
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
nsresult rv = WSRunObject::PrepareToDeleteRange(*this, &firstRangeStart,
|
|
&firstRangeEnd);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToDeleteRange() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
if (MaybeHasMutationEventListeners(
|
|
NS_EVENT_BITS_MUTATION_NODEREMOVED |
|
|
NS_EVENT_BITS_MUTATION_NODEREMOVEDFROMDOCUMENT |
|
|
NS_EVENT_BITS_MUTATION_ATTRMODIFIED |
|
|
NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED) &&
|
|
(NS_WARN_IF(!firstRangeStart.IsSetAndValid()) ||
|
|
NS_WARN_IF(!firstRangeEnd.IsSetAndValid()))) {
|
|
NS_WARNING("Mutation event listener changed the DOM tree");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
}
|
|
|
|
// XXX This is odd. We do we simply use `DeleteSelectionWithTransaction()`
|
|
// only when **first** range is in same container?
|
|
if (firstRangeStart.GetContainer() == firstRangeEnd.GetContainer()) {
|
|
{
|
|
AutoTrackDOMPoint startTracker(RangeUpdaterRef(), &firstRangeStart);
|
|
AutoTrackDOMPoint endTracker(RangeUpdaterRef(), &firstRangeEnd);
|
|
|
|
nsresult rv =
|
|
DeleteSelectionWithTransaction(aDirectionAndAmount, aStripWrappers);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::DeleteSelectionWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
nsresult rv = DeleteUnnecessaryNodesAndCollapseSelection(
|
|
aDirectionAndAmount, firstRangeStart, firstRangeEnd);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteUnnecessaryNodesAndCollapseSelection() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// Figure out mailcite ancestors
|
|
RefPtr<Element> startCiteNode =
|
|
GetMostAncestorMailCiteElement(*firstRangeStart.GetContainer());
|
|
RefPtr<Element> endCiteNode =
|
|
GetMostAncestorMailCiteElement(*firstRangeEnd.GetContainer());
|
|
|
|
// If we only have a mailcite at one of the two endpoints, set the
|
|
// directionality of the deletion so that the selection will end up
|
|
// outside the mailcite.
|
|
if (startCiteNode && !endCiteNode) {
|
|
aDirectionAndAmount = nsIEditor::eNext;
|
|
} else if (!startCiteNode && endCiteNode) {
|
|
aDirectionAndAmount = nsIEditor::ePrevious;
|
|
}
|
|
|
|
// Figure out block parents
|
|
RefPtr<Element> leftBlockElement =
|
|
firstRangeStart.IsInContentNode()
|
|
? HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*firstRangeStart.ContainerAsContent())
|
|
: nullptr;
|
|
RefPtr<Element> rightBlockElement =
|
|
firstRangeEnd.IsInContentNode()
|
|
? HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*firstRangeEnd.ContainerAsContent())
|
|
: nullptr;
|
|
if (NS_WARN_IF(!leftBlockElement) || NS_WARN_IF(!rightBlockElement)) {
|
|
return EditActionHandled(NS_ERROR_FAILURE); // XXX "handled"??
|
|
}
|
|
|
|
// XXX This is also odd. We do we simply use
|
|
// `DeleteSelectionWithTransaction()` only when **first** range is in
|
|
// same block?
|
|
if (leftBlockElement && leftBlockElement == rightBlockElement) {
|
|
{
|
|
AutoTrackDOMPoint startTracker(RangeUpdaterRef(), &firstRangeStart);
|
|
AutoTrackDOMPoint endTracker(RangeUpdaterRef(), &firstRangeEnd);
|
|
|
|
nsresult rv =
|
|
DeleteSelectionWithTransaction(aDirectionAndAmount, aStripWrappers);
|
|
if (rv == NS_ERROR_EDITOR_DESTROYED) {
|
|
NS_WARNING(
|
|
"EditorBase::DeleteSelectionWithTransaction() caused destroying "
|
|
"the editor");
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"EditorBase::DeleteSelectionWithTransaction() failed, but ignored");
|
|
}
|
|
nsresult rv = DeleteUnnecessaryNodesAndCollapseSelection(
|
|
aDirectionAndAmount, firstRangeStart, firstRangeEnd);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteUnnecessaryNodesAndCollapseSelection() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// Deleting across blocks.
|
|
|
|
// If left block and right block are adjuscent siblings and they are same
|
|
// type of elements, we can merge them after deleting the selected contents.
|
|
// MOOSE: this could conceivably screw up a table.. fix me.
|
|
if (leftBlockElement->GetParentNode() == rightBlockElement->GetParentNode() &&
|
|
HTMLEditUtils::CanContentsBeJoined(
|
|
*leftBlockElement, *rightBlockElement,
|
|
IsCSSEnabled() ? StyleDifference::CompareIfSpanElements
|
|
: StyleDifference::Ignore) &&
|
|
// XXX What's special about these three types of block?
|
|
(leftBlockElement->IsHTMLElement(nsGkAtoms::p) ||
|
|
HTMLEditUtils::IsListItem(leftBlockElement) ||
|
|
HTMLEditUtils::IsHeader(*leftBlockElement))) {
|
|
// First delete the selection
|
|
nsresult rv =
|
|
DeleteSelectionWithTransaction(aDirectionAndAmount, aStripWrappers);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::DeleteSelectionWithTransaction() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
// Join blocks
|
|
Result<EditorDOMPoint, nsresult> atFirstChildOfTheLastRightNodeOrError =
|
|
JoinNodesDeepWithTransaction(*leftBlockElement, *rightBlockElement);
|
|
if (atFirstChildOfTheLastRightNodeOrError.isErr()) {
|
|
NS_WARNING("HTMLEditor::JoinNodesDeepWithTransaction() failed");
|
|
return EditActionHandled(
|
|
atFirstChildOfTheLastRightNodeOrError.unwrapErr());
|
|
}
|
|
MOZ_ASSERT(atFirstChildOfTheLastRightNodeOrError.inspect().IsSet());
|
|
// Fix up selection
|
|
rv = CollapseSelectionTo(atFirstChildOfTheLastRightNodeOrError.inspect());
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
// Otherwise, delete every nodes in all ranges, then, clean up something.
|
|
EditActionResult result(NS_OK);
|
|
result.MarkAsHandled();
|
|
{
|
|
AutoTrackDOMPoint startTracker(RangeUpdaterRef(), &firstRangeStart);
|
|
AutoTrackDOMPoint endTracker(RangeUpdaterRef(), &firstRangeEnd);
|
|
|
|
// Else blocks not same type, or not siblings. Delete everything
|
|
// except table elements.
|
|
bool join = true;
|
|
|
|
AutoRangeArray arrayOfRanges(SelectionRefPtr());
|
|
for (auto& range : arrayOfRanges.mRanges) {
|
|
// Build a list of direct child nodes in the range
|
|
AutoTArray<OwningNonNull<nsIContent>, 10> arrayOfTopChildren;
|
|
DOMSubtreeIterator iter;
|
|
nsresult rv = iter.Init(*range);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("DOMSubtreeIterator::Init() failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
iter.AppendAllNodesToArray(arrayOfTopChildren);
|
|
|
|
// Now that we have the list, delete non-table elements
|
|
for (auto& content : arrayOfTopChildren) {
|
|
// XXX After here, the child contents in the array may have been moved
|
|
// to somewhere or removed. We should handle it.
|
|
//
|
|
// MOZ_KnownLive because 'arrayOfTopChildren' is guaranteed to
|
|
// keep it alive.
|
|
//
|
|
// Even with https://bugzilla.mozilla.org/show_bug.cgi?id=1620312 fixed
|
|
// this might need to stay, because 'arrayOfTopChildren' is not const,
|
|
// so it's not obvious how to prove via static analysis that it won't
|
|
// change and release us.
|
|
nsresult rv =
|
|
DeleteElementsExceptTableRelatedElements(MOZ_KnownLive(content));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteElementsExceptTableRelatedElements() failed, "
|
|
"but ignored");
|
|
// If something visible is deleted, no need to join. Visible means
|
|
// all nodes except non-visible textnodes and breaks.
|
|
// XXX Odd. Why do we check the visibility after removing the node
|
|
// from the DOM tree?
|
|
if (join && aSelectionWasCollapsed == SelectionWasCollapsed::Yes) {
|
|
if (Text* text = content->GetAsText()) {
|
|
join = !IsInVisibleTextFrames(*text);
|
|
} else if (content->IsElement()) {
|
|
if (IsEmptyNode(*content->AsElement())) {
|
|
join = true;
|
|
} else {
|
|
join = content->IsHTMLElement(nsGkAtoms::br) &&
|
|
!IsVisibleBRElement(content);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check endpoints for possible text deletion. We can assume that if
|
|
// text node is found, we can delete to end or to begining as
|
|
// appropriate, since the case where both sel endpoints in same text
|
|
// node was already handled (we wouldn't be here)
|
|
if (firstRangeStart.IsInTextNode() && !firstRangeStart.IsEndOfContainer()) {
|
|
// Delete to last character
|
|
OwningNonNull<Text> textNode = *firstRangeStart.GetContainerAsText();
|
|
nsresult rv = DeleteTextWithTransaction(
|
|
textNode, firstRangeStart.Offset(),
|
|
firstRangeStart.GetContainer()->Length() - firstRangeStart.Offset());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteTextWithTransaction() failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
}
|
|
if (firstRangeEnd.IsInTextNode() && !firstRangeEnd.IsStartOfContainer()) {
|
|
// Delete to first character
|
|
OwningNonNull<Text> textNode = *firstRangeEnd.GetContainerAsText();
|
|
nsresult rv =
|
|
DeleteTextWithTransaction(textNode, 0, firstRangeEnd.Offset());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return result.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteTextWithTransaction() failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
}
|
|
|
|
if (join) {
|
|
result |=
|
|
TryToJoinBlocksWithTransaction(*leftBlockElement, *rightBlockElement);
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::TryToJoinBlocksWithTransaction() failed");
|
|
return result;
|
|
}
|
|
|
|
// If we're joining blocks: if deleting forward the selection should
|
|
// be collapsed to the end of the selection, if deleting backward the
|
|
// selection should be collapsed to the beginning of the selection.
|
|
// But if we're not joining then the selection should collapse to the
|
|
// beginning of the selection if we'redeleting forward, because the
|
|
// end of the selection will still be in the next block. And same
|
|
// thing for deleting backwards (selection should collapse to the end,
|
|
// because the beginning will still be in the first block). See Bug
|
|
// 507936.
|
|
if (aDirectionAndAmount == nsIEditor::eNext) {
|
|
aDirectionAndAmount = nsIEditor::ePrevious;
|
|
} else {
|
|
aDirectionAndAmount = nsIEditor::eNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult rv = DeleteUnnecessaryNodesAndCollapseSelection(
|
|
aDirectionAndAmount, firstRangeStart, firstRangeEnd);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteUnnecessaryNodesAndCollapseSelection() failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
|
|
nsresult HTMLEditor::DeleteUnnecessaryNodesAndCollapseSelection(
|
|
nsIEditor::EDirection aDirectionAndAmount,
|
|
const EditorDOMPoint& aSelectionStartPoint,
|
|
const EditorDOMPoint& aSelectionEndPoint) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
EditorDOMPoint atCaret(aSelectionStartPoint);
|
|
EditorDOMPoint selectionEndPoint(aSelectionEndPoint);
|
|
|
|
// If we're handling D&D, this is called to delete dragging item from the
|
|
// tree. In this case, we should move parent blocks if it becomes empty.
|
|
if (GetEditAction() == EditAction::eDrop ||
|
|
GetEditAction() == EditAction::eDeleteByDrag) {
|
|
MOZ_ASSERT((atCaret.GetContainer() == selectionEndPoint.GetContainer() &&
|
|
atCaret.Offset() == selectionEndPoint.Offset()) ||
|
|
(atCaret.GetContainer()->GetNextSibling() ==
|
|
selectionEndPoint.GetContainer() &&
|
|
atCaret.IsEndOfContainer() &&
|
|
selectionEndPoint.IsStartOfContainer()));
|
|
{
|
|
AutoTrackDOMPoint startTracker(RangeUpdaterRef(), &atCaret);
|
|
AutoTrackDOMPoint endTracker(RangeUpdaterRef(), &selectionEndPoint);
|
|
|
|
nsresult rv = DeleteParentBlocksWithTransactionIfEmpty(atCaret);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::DeleteParentBlocksWithTransactionIfEmpty() failed");
|
|
return rv;
|
|
}
|
|
TopLevelEditSubActionDataRef().mDidDeleteEmptyParentBlocks = rv == NS_OK;
|
|
}
|
|
// If we removed parent blocks, Selection should be collapsed at where
|
|
// the most ancestor empty block has been.
|
|
if (TopLevelEditSubActionDataRef().mDidDeleteEmptyParentBlocks) {
|
|
nsresult rv = CollapseSelectionTo(atCaret);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(!atCaret.IsInContentNode()) ||
|
|
NS_WARN_IF(!selectionEndPoint.IsInContentNode())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
|
|
// We might have left only collapsed whitespace in the start/end nodes
|
|
{
|
|
AutoTrackDOMPoint startTracker(RangeUpdaterRef(), &atCaret);
|
|
AutoTrackDOMPoint endTracker(RangeUpdaterRef(), &selectionEndPoint);
|
|
|
|
nsresult rv = DeleteNodeIfInvisibleAndEditableTextNode(
|
|
MOZ_KnownLive(*atCaret.ContainerAsContent()));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeIfInvisibleAndEditableTextNode("
|
|
") failed to remove start node, but ignored");
|
|
rv = DeleteNodeIfInvisibleAndEditableTextNode(
|
|
MOZ_KnownLive(*selectionEndPoint.ContainerAsContent()));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeIfInvisibleAndEditableTextNode("
|
|
") failed to remove end node, but ignored");
|
|
}
|
|
|
|
nsresult rv = CollapseSelectionTo(aDirectionAndAmount == nsIEditor::ePrevious
|
|
? selectionEndPoint
|
|
: atCaret);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::DeleteNodeIfInvisibleAndEditableTextNode(
|
|
nsIContent& aContent) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
Text* text = aContent.GetAsText();
|
|
if (!text) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsVisibleTextNode(*text) || !HTMLEditUtils::IsSimplyEditableNode(*text)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = DeleteNodeWithTransaction(aContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::InsertBRElementIfHardLineIsEmptyAndEndsWithBlockBoundary(
|
|
const EditorDOMPoint& aPointToInsert) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aPointToInsert.IsSet());
|
|
|
|
if (!aPointToInsert.GetContainerAsContent()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If container of the point is not in a block, we don't need to put a
|
|
// `<br>` element here.
|
|
if (!HTMLEditUtils::IsBlockElement(*aPointToInsert.ContainerAsContent())) {
|
|
return NS_OK;
|
|
}
|
|
|
|
WSRunObject wsObj(*this, aPointToInsert);
|
|
// If the point is not start of a hard line, we don't need to put a `<br>`
|
|
// element here.
|
|
if (!wsObj.StartsFromHardLineBreak()) {
|
|
return NS_OK;
|
|
}
|
|
// If the point is not end of a hard line or the hard line does not end with
|
|
// block boundary, we don't need to put a `<br>` element here.
|
|
if (!wsObj.EndsByBlockBoundary()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we cannot insert a `<br>` element here, do nothing.
|
|
if (!HTMLEditUtils::CanNodeContain(*aPointToInsert.GetContainer(),
|
|
*nsGkAtoms::br)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(aPointToInsert, nsIEditor::ePrevious);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(brElement,
|
|
"HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return brElement ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorDOMPoint HTMLEditor::GetGoodCaretPointFor(
|
|
nsIContent& aContent, nsIEditor::EDirection aDirectionAndAmount) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aDirectionAndAmount == nsIEditor::eNext ||
|
|
aDirectionAndAmount == nsIEditor::eNextWord ||
|
|
aDirectionAndAmount == nsIEditor::ePrevious ||
|
|
aDirectionAndAmount == nsIEditor::ePreviousWord ||
|
|
aDirectionAndAmount == nsIEditor::eToBeginningOfLine ||
|
|
aDirectionAndAmount == nsIEditor::eToEndOfLine);
|
|
|
|
bool goingForward = (aDirectionAndAmount == nsIEditor::eNext ||
|
|
aDirectionAndAmount == nsIEditor::eNextWord ||
|
|
aDirectionAndAmount == nsIEditor::eToEndOfLine);
|
|
|
|
// XXX Why don't we check whether the candidate position is enable or not?
|
|
// When the result is not editable point, caret will be enclosed in
|
|
// the non-editable content.
|
|
|
|
// If we can put caret in aContent, return start or end in it.
|
|
if (aContent.IsText() || HTMLEditUtils::IsContainerNode(aContent) ||
|
|
NS_WARN_IF(!aContent.GetParentNode())) {
|
|
return EditorDOMPoint(&aContent, goingForward ? 0 : aContent.Length());
|
|
}
|
|
|
|
// If we are going forward, put caret at aContent itself.
|
|
if (goingForward) {
|
|
return EditorDOMPoint(&aContent);
|
|
}
|
|
|
|
// If we are going backward, put caret to next node unless aContent is an
|
|
// invisible `<br>` element.
|
|
// XXX Shouldn't we put caret to first leaf of the next node?
|
|
if (!aContent.IsHTMLElement(nsGkAtoms::br) || IsVisibleBRElement(&aContent)) {
|
|
EditorDOMPoint ret(EditorDOMPoint::After(aContent));
|
|
NS_WARNING_ASSERTION(ret.IsSet(), "Failed to set after aContent");
|
|
return ret;
|
|
}
|
|
|
|
// Otherwise, we should put caret at the invisible `<br>` element.
|
|
return EditorDOMPoint(&aContent);
|
|
}
|
|
|
|
Result<EditorDOMPoint, nsresult> HTMLEditor::JoinNodesDeepWithTransaction(
|
|
nsIContent& aLeftContent, nsIContent& aRightContent) {
|
|
// While the rightmost children and their descendants of the left node match
|
|
// the leftmost children and their descendants of the right node, join them
|
|
// up.
|
|
|
|
nsCOMPtr<nsIContent> leftContentToJoin = &aLeftContent;
|
|
nsCOMPtr<nsIContent> rightContentToJoin = &aRightContent;
|
|
nsCOMPtr<nsINode> parentNode = aRightContent.GetParentNode();
|
|
|
|
EditorDOMPoint ret;
|
|
const HTMLEditUtils::StyleDifference kCompareStyle =
|
|
IsCSSEnabled() ? StyleDifference::CompareIfSpanElements
|
|
: StyleDifference::Ignore;
|
|
while (leftContentToJoin && rightContentToJoin && parentNode &&
|
|
HTMLEditUtils::CanContentsBeJoined(
|
|
*leftContentToJoin, *rightContentToJoin, kCompareStyle)) {
|
|
uint32_t length = leftContentToJoin->Length();
|
|
|
|
// Do the join
|
|
nsresult rv =
|
|
JoinNodesWithTransaction(*leftContentToJoin, *rightContentToJoin);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return Err(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::JoinNodesWithTransaction() failed");
|
|
return Err(rv);
|
|
}
|
|
|
|
// XXX rightContentToJoin may have fewer children or shorter length text.
|
|
// So, we need some adjustment here.
|
|
ret.Set(rightContentToJoin, length);
|
|
if (NS_WARN_IF(!ret.IsSet())) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (parentNode->IsText()) {
|
|
// We've joined all the way down to text nodes, we're done!
|
|
return ret;
|
|
}
|
|
|
|
// Get new left and right nodes, and begin anew
|
|
parentNode = rightContentToJoin;
|
|
rightContentToJoin = parentNode->GetChildAt_Deprecated(length);
|
|
if (rightContentToJoin) {
|
|
leftContentToJoin = rightContentToJoin->GetPreviousSibling();
|
|
} else {
|
|
leftContentToJoin = nullptr;
|
|
}
|
|
|
|
// Skip over non-editable nodes
|
|
while (leftContentToJoin && !EditorUtils::IsEditableContent(
|
|
*leftContentToJoin, EditorType::HTML)) {
|
|
leftContentToJoin = leftContentToJoin->GetPreviousSibling();
|
|
}
|
|
if (!leftContentToJoin) {
|
|
return ret;
|
|
}
|
|
|
|
while (rightContentToJoin && !EditorUtils::IsEditableContent(
|
|
*rightContentToJoin, EditorType::HTML)) {
|
|
rightContentToJoin = rightContentToJoin->GetNextSibling();
|
|
}
|
|
if (!rightContentToJoin) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!ret.IsSet()) {
|
|
NS_WARNING("HTMLEditor::JoinNodesDeepWithTransaction() joined no contents");
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::TryToJoinBlocksWithTransaction(
|
|
nsIContent& aLeftContentInBlock, nsIContent& aRightContentInBlock) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
RefPtr<Element> leftBlockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(aLeftContentInBlock);
|
|
RefPtr<Element> rightBlockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(aRightContentInBlock);
|
|
|
|
// Sanity checks
|
|
if (NS_WARN_IF(!leftBlockElement) || NS_WARN_IF(!rightBlockElement)) {
|
|
return EditActionIgnored(NS_ERROR_NULL_POINTER);
|
|
}
|
|
if (NS_WARN_IF(leftBlockElement == rightBlockElement)) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
}
|
|
|
|
if (HTMLEditUtils::IsTableElement(leftBlockElement) ||
|
|
HTMLEditUtils::IsTableElement(rightBlockElement)) {
|
|
// Do not try to merge table elements
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
// Make sure we don't try to move things into HR's, which look like blocks
|
|
// but aren't containers
|
|
if (leftBlockElement->IsHTMLElement(nsGkAtoms::hr)) {
|
|
leftBlockElement =
|
|
HTMLEditUtils::GetAncestorBlockElement(*leftBlockElement);
|
|
if (NS_WARN_IF(!leftBlockElement)) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
}
|
|
}
|
|
if (rightBlockElement->IsHTMLElement(nsGkAtoms::hr)) {
|
|
rightBlockElement =
|
|
HTMLEditUtils::GetAncestorBlockElement(*rightBlockElement);
|
|
if (NS_WARN_IF(!rightBlockElement)) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
}
|
|
}
|
|
|
|
// Bail if both blocks the same
|
|
if (leftBlockElement == rightBlockElement) {
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
// Joining a list item to its parent is a NOP.
|
|
if (HTMLEditUtils::IsList(leftBlockElement) &&
|
|
HTMLEditUtils::IsListItem(rightBlockElement) &&
|
|
rightBlockElement->GetParentNode() == leftBlockElement) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// Special rule here: if we are trying to join list items, and they are in
|
|
// different lists, join the lists instead.
|
|
bool mergeListElements = false;
|
|
nsAtom* leftListElementTagName = nsGkAtoms::_empty;
|
|
RefPtr<Element> leftListElement, rightListElement;
|
|
if (HTMLEditUtils::IsListItem(leftBlockElement) &&
|
|
HTMLEditUtils::IsListItem(rightBlockElement)) {
|
|
// XXX leftListElement and/or rightListElement may be not list elements.
|
|
leftListElement = leftBlockElement->GetParentElement();
|
|
rightListElement = rightBlockElement->GetParentElement();
|
|
EditorDOMPoint atChildInBlock;
|
|
if (leftListElement && rightListElement &&
|
|
leftListElement != rightListElement &&
|
|
!EditorUtils::IsDescendantOf(*leftListElement, *rightBlockElement,
|
|
&atChildInBlock) &&
|
|
!EditorUtils::IsDescendantOf(*rightListElement, *leftBlockElement,
|
|
&atChildInBlock)) {
|
|
// There are some special complications if the lists are descendants of
|
|
// the other lists' items. Note that it is okay for them to be
|
|
// descendants of the other lists themselves, which is the usual case for
|
|
// sublists in our implementation.
|
|
MOZ_DIAGNOSTIC_ASSERT(!atChildInBlock.IsSet());
|
|
leftBlockElement = leftListElement;
|
|
rightBlockElement = rightListElement;
|
|
mergeListElements = true;
|
|
leftListElementTagName = leftListElement->NodeInfo()->NameAtom();
|
|
}
|
|
}
|
|
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
|
|
// If the left block element is in the right block element, move the hard
|
|
// line including the right block element to end of the left block.
|
|
// However, if we are merging list elements, we don't join them.
|
|
EditorDOMPoint atRightBlockChild;
|
|
if (EditorUtils::IsDescendantOf(*leftBlockElement, *rightBlockElement,
|
|
&atRightBlockChild)) {
|
|
MOZ_ASSERT(atRightBlockChild.GetContainer() == rightBlockElement);
|
|
DebugOnly<bool> advanced = atRightBlockChild.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(
|
|
advanced,
|
|
"Failed to advance offset to after child of rightBlockElement, "
|
|
"leftBlockElement is a descendant of the child");
|
|
nsresult rv =
|
|
WSRunObject::Scrub(*this, EditorDOMPoint::AtEndOf(leftBlockElement));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::Scrub() failed at left block");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
|
|
{
|
|
// We can't just track rightBlockElement because it's an Element.
|
|
AutoTrackDOMPoint tracker(RangeUpdaterRef(), &atRightBlockChild);
|
|
nsresult rv = WSRunObject::Scrub(*this, atRightBlockChild);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::Scrub() failed at right block child");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
|
|
// XXX AutoTrackDOMPoint instance, tracker, hasn't been destroyed here.
|
|
// Do we really need to do update rightBlockElement here??
|
|
if (atRightBlockChild.GetContainerAsElement()) {
|
|
rightBlockElement = atRightBlockChild.GetContainerAsElement();
|
|
} else if (NS_WARN_IF(!atRightBlockChild.GetContainerParentAsElement())) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
} else {
|
|
rightBlockElement = atRightBlockChild.GetContainerParentAsElement();
|
|
}
|
|
}
|
|
|
|
// Do br adjustment.
|
|
RefPtr<Element> invisibleBRElement =
|
|
GetInvisibleBRElementAt(EditorDOMPoint::AtEndOf(leftBlockElement));
|
|
EditActionResult ret(NS_OK);
|
|
if (NS_WARN_IF(mergeListElements)) {
|
|
// Since 2002, here was the following comment:
|
|
// > The idea here is to take all children in rightListElement that are
|
|
// > past offset, and pull them into leftlistElement.
|
|
// However, this has never been performed because we are here only when
|
|
// neither left list nor right list is a descendant of the other but
|
|
// in such case, getting a list item in the right list node almost
|
|
// always failed since a variable for offset of
|
|
// rightListElement->GetChildAt() was not initialized. So, it might be
|
|
// a bug, but we should keep this traditional behavior for now. If you
|
|
// find when we get here, please remove this comment if we don't need to
|
|
// do it. Otherwise, please move children of the right list node to the
|
|
// end of the left list node.
|
|
|
|
// XXX Although, we don't do nothing here, but for keeping traditional
|
|
// behavior, we should mark as handled.
|
|
ret.MarkAsHandled();
|
|
} else {
|
|
// XXX Why do we ignore the result of MoveOneHardLineContents()?
|
|
NS_WARNING_ASSERTION(
|
|
rightBlockElement == atRightBlockChild.GetContainer(),
|
|
"The relation is not guaranteed but assumed");
|
|
MoveNodeResult moveNodeResult = MoveOneHardLineContents(
|
|
EditorDOMPoint(rightBlockElement, atRightBlockChild.Offset()),
|
|
EditorDOMPoint(leftBlockElement, 0), MoveToEndOfContainer::Yes);
|
|
if (NS_WARN_IF(moveNodeResult.EditorDestroyed())) {
|
|
return ret.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(moveNodeResult.Succeeded(),
|
|
"HTMLEditor::MoveOneHardLineContents("
|
|
"MoveToEndOfContainer::Yes) failed, but ignored");
|
|
if (moveNodeResult.Succeeded()) {
|
|
ret |= moveNodeResult;
|
|
}
|
|
// Now, all children of rightBlockElement were moved to leftBlockElement.
|
|
// So, atRightBlockChild is now invalid.
|
|
atRightBlockChild.Clear();
|
|
}
|
|
|
|
if (!invisibleBRElement) {
|
|
return ret;
|
|
}
|
|
|
|
rv = DeleteNodeWithTransaction(*invisibleBRElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
ret.MarkAsHandled();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(!atRightBlockChild.IsSet());
|
|
|
|
// If the right block element is in the left block element:
|
|
// - move list item elements in the right block element to where the left
|
|
// list element is
|
|
// - or first hard line in the right block element to where:
|
|
// - the left block element is.
|
|
// - or the given left content in the left block is.
|
|
EditorDOMPoint atLeftBlockChild;
|
|
if (EditorUtils::IsDescendantOf(*rightBlockElement, *leftBlockElement,
|
|
&atLeftBlockChild)) {
|
|
MOZ_ASSERT(leftBlockElement == atLeftBlockChild.GetContainer());
|
|
|
|
nsresult rv =
|
|
WSRunObject::Scrub(*this, EditorDOMPoint(rightBlockElement, 0));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::Scrub() failed at right block");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
|
|
{
|
|
// We can't just track leftBlockElement because it's an Element, so track
|
|
// something else.
|
|
AutoTrackDOMPoint tracker(RangeUpdaterRef(), &atLeftBlockChild);
|
|
rv = WSRunObject::Scrub(
|
|
*this, EditorDOMPoint(leftBlockElement, atLeftBlockChild.Offset()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::Scrub() failed at left block child");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
// XXX AutoTrackDOMPoint instance, tracker, hasn't been destroyed here.
|
|
// Do we really need to do update rightBlockElement here??
|
|
if (atLeftBlockChild.GetContainerAsElement()) {
|
|
leftBlockElement = atLeftBlockChild.GetContainerAsElement();
|
|
} else if (NS_WARN_IF(!atLeftBlockChild.GetContainerParentAsElement())) {
|
|
return EditActionIgnored(NS_ERROR_UNEXPECTED);
|
|
} else {
|
|
leftBlockElement = atLeftBlockChild.GetContainerParentAsElement();
|
|
}
|
|
}
|
|
|
|
// Do br adjustment.
|
|
RefPtr<Element> invisibleBRElement =
|
|
GetInvisibleBRElementAt(atLeftBlockChild);
|
|
EditActionResult ret(NS_OK);
|
|
if (mergeListElements) {
|
|
// XXX Why do we ignore the error from MoveChildren()?
|
|
// XXX Why is it guaranteed that `atLeftBlockChild.GetContainer()` is
|
|
// `leftListElement` here? Looks like that above code may run
|
|
// mutation event listeners.
|
|
NS_WARNING_ASSERTION(leftListElement == atLeftBlockChild.GetContainer(),
|
|
"This is not guaranteed, but assumed");
|
|
MoveNodeResult moveNodeResult = MoveChildren(
|
|
*rightListElement,
|
|
EditorDOMPoint(leftListElement, atLeftBlockChild.Offset()));
|
|
if (NS_WARN_IF(moveNodeResult.EditorDestroyed())) {
|
|
return ret.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(moveNodeResult.Succeeded(),
|
|
"HTMLEditor::MoveChildren() failed, but ignored");
|
|
if (moveNodeResult.Succeeded()) {
|
|
ret |= moveNodeResult;
|
|
}
|
|
// atLeftBlockChild was moved to rightListElement. So, it's invalid now.
|
|
atLeftBlockChild.Clear();
|
|
} else {
|
|
// Left block is a parent of right block, and the parent of the previous
|
|
// visible content. Right block is a child and contains the contents we
|
|
// want to move.
|
|
|
|
EditorDOMPoint atPreviousContent;
|
|
if (&aLeftContentInBlock == leftBlockElement) {
|
|
// We are working with valid HTML, aLeftContentInBlock is a block node,
|
|
// and is therefore allowed to contain rightBlockElement. This is the
|
|
// simple case, we will simply move the content in rightBlockElement
|
|
// out of its block.
|
|
atPreviousContent = atLeftBlockChild;
|
|
} else {
|
|
// We try to work as well as possible with HTML that's already invalid.
|
|
// Although "right block" is a block, and a block must not be contained
|
|
// in inline elements, reality is that broken documents do exist. The
|
|
// DIRECT parent of "left NODE" might be an inline element. Previous
|
|
// versions of this code skipped inline parents until the first block
|
|
// parent was found (and used "left block" as the destination).
|
|
// However, in some situations this strategy moves the content to an
|
|
// unexpected position. (see bug 200416) The new idea is to make the
|
|
// moving content a sibling, next to the previous visible content.
|
|
atPreviousContent.Set(&aLeftContentInBlock);
|
|
|
|
// We want to move our content just after the previous visible node.
|
|
atPreviousContent.AdvanceOffset();
|
|
}
|
|
|
|
MOZ_ASSERT(atPreviousContent.IsSet());
|
|
|
|
// Because we don't want the moving content to receive the style of the
|
|
// previous content, we split the previous content's style.
|
|
|
|
RefPtr<Element> editingHost = GetActiveEditingHost();
|
|
// XXX It's odd to continue handling this edit action if there is no
|
|
// editing host.
|
|
if (!editingHost || &aLeftContentInBlock != editingHost) {
|
|
SplitNodeResult splitResult = SplitAncestorStyledInlineElementsAt(
|
|
atPreviousContent, nullptr, nullptr);
|
|
if (splitResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitAncestorStyledInlineElementsAt() failed");
|
|
return EditActionIgnored(splitResult.Rv());
|
|
}
|
|
|
|
if (splitResult.Handled()) {
|
|
if (splitResult.GetNextNode()) {
|
|
atPreviousContent.Set(splitResult.GetNextNode());
|
|
if (!atPreviousContent.IsSet()) {
|
|
NS_WARNING("Next node of split point was orphaned");
|
|
return EditActionIgnored(NS_ERROR_NULL_POINTER);
|
|
}
|
|
} else {
|
|
atPreviousContent = splitResult.SplitPoint();
|
|
if (!atPreviousContent.IsSet()) {
|
|
NS_WARNING("Split node was orphaned");
|
|
return EditActionIgnored(NS_ERROR_NULL_POINTER);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ret |= MoveOneHardLineContents(EditorDOMPoint(rightBlockElement, 0),
|
|
atPreviousContent);
|
|
if (ret.Failed()) {
|
|
NS_WARNING("HTMLEditor::MoveOneHardLineContents() failed");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!invisibleBRElement) {
|
|
return ret;
|
|
}
|
|
|
|
rv = DeleteNodeWithTransaction(*invisibleBRElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return ret.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
ret.MarkAsHandled();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(!atRightBlockChild.IsSet());
|
|
MOZ_DIAGNOSTIC_ASSERT(!atLeftBlockChild.IsSet());
|
|
|
|
// Normal case. Blocks are siblings, or at least close enough. An example
|
|
// of the latter is <p>paragraph</p><ul><li>one<li>two<li>three</ul>. The
|
|
// first li and the p are not true siblings, but we still want to join them
|
|
// if you backspace from li into p.
|
|
|
|
// Adjust whitespace at block boundaries
|
|
nsresult rv = WSRunObject::PrepareToJoinBlocks(*this, *leftBlockElement,
|
|
*rightBlockElement);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToJoinBlocks() failed");
|
|
return EditActionIgnored(rv);
|
|
}
|
|
// Do br adjustment.
|
|
RefPtr<Element> invisibleBRElement =
|
|
GetInvisibleBRElementAt(EditorDOMPoint::AtEndOf(leftBlockElement));
|
|
EditActionResult ret(NS_OK);
|
|
if (mergeListElements || leftBlockElement->NodeInfo()->NameAtom() ==
|
|
rightBlockElement->NodeInfo()->NameAtom()) {
|
|
// Nodes are same type. merge them.
|
|
EditorDOMPoint atFirstChildOfRightNode;
|
|
nsresult rv = JoinNearestEditableNodesWithTransaction(
|
|
*leftBlockElement, *rightBlockElement, &atFirstChildOfRightNode);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::JoinNearestEditableNodesWithTransaction()"
|
|
" failed, but ignored");
|
|
if (mergeListElements && atFirstChildOfRightNode.IsSet()) {
|
|
CreateElementResult convertListTypeResult = ChangeListElementType(
|
|
*rightBlockElement, MOZ_KnownLive(*leftListElementTagName),
|
|
*nsGkAtoms::li);
|
|
if (NS_WARN_IF(convertListTypeResult.EditorDestroyed())) {
|
|
return EditActionIgnored(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
convertListTypeResult.Succeeded(),
|
|
"HTMLEditor::ChangeListElementType() failed, but ignored");
|
|
}
|
|
ret.MarkAsHandled();
|
|
} else {
|
|
// Nodes are dissimilar types.
|
|
ret |= MoveOneHardLineContents(EditorDOMPoint(rightBlockElement, 0),
|
|
EditorDOMPoint(leftBlockElement, 0),
|
|
MoveToEndOfContainer::Yes);
|
|
if (ret.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MoveOneHardLineContents(MoveToEndOfContainer::Yes) "
|
|
"failed");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!invisibleBRElement) {
|
|
return ret.MarkAsHandled();
|
|
}
|
|
|
|
rv = DeleteNodeWithTransaction(*invisibleBRElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return ret.SetResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
// XXX In other top level if blocks, the result of
|
|
// DeleteNodeWithTransaction() is ignored. Why does only this result
|
|
// is respected?
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return ret.SetResult(rv);
|
|
}
|
|
return ret.MarkAsHandled();
|
|
}
|
|
|
|
MoveNodeResult HTMLEditor::MoveOneHardLineContents(
|
|
const EditorDOMPoint& aPointInHardLine,
|
|
const EditorDOMPoint& aPointToInsert,
|
|
MoveToEndOfContainer
|
|
aMoveToEndOfContainer /* = MoveToEndOfContainer::No */) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodesInOneHardLine(
|
|
aPointInHardLine, arrayOfContents, EditSubAction::eMergeBlockContents,
|
|
HTMLEditor::CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitInlinesAndCollectEditTargetNodesInOneHardLine("
|
|
"eMergeBlockContents, CollectNonEditableNodes::Yes) failed");
|
|
return MoveNodeResult(rv);
|
|
}
|
|
if (arrayOfContents.IsEmpty()) {
|
|
return MoveNodeIgnored(aPointToInsert);
|
|
}
|
|
|
|
uint32_t offset = aPointToInsert.Offset();
|
|
MoveNodeResult result;
|
|
for (auto& content : arrayOfContents) {
|
|
if (aMoveToEndOfContainer == MoveToEndOfContainer::Yes) {
|
|
// For backward compatibility, we should move contents to end of the
|
|
// container if this is called with MoveToEndOfContainer::Yes.
|
|
offset = aPointToInsert.GetContainer()->Length();
|
|
}
|
|
// get the node to act on
|
|
if (HTMLEditUtils::IsBlockElement(content)) {
|
|
// For block nodes, move their contents only, then delete block.
|
|
result |=
|
|
MoveChildren(MOZ_KnownLive(*content->AsElement()),
|
|
EditorDOMPoint(aPointToInsert.GetContainer(), offset));
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::MoveChildren() failed");
|
|
return result;
|
|
}
|
|
offset = result.NextInsertionPointRef().Offset();
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
DebugOnly<nsresult> rvIgnored =
|
|
DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return MoveNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed, but ignored");
|
|
result.MarkAsHandled();
|
|
if (MaybeHasMutationEventListeners()) {
|
|
// Mutation event listener may make `offset` value invalid with
|
|
// removing some previous children while we call
|
|
// `DeleteNodeWithTransaction()` so that we should adjust it here.
|
|
offset = std::min(offset, aPointToInsert.GetContainer()->Length());
|
|
}
|
|
continue;
|
|
}
|
|
// XXX Different from the above block, we ignore error of moving nodes.
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
MoveNodeResult moveNodeResult = MoveNodeOrChildren(
|
|
MOZ_KnownLive(content),
|
|
EditorDOMPoint(aPointToInsert.GetContainer(), offset));
|
|
if (NS_WARN_IF(moveNodeResult.EditorDestroyed())) {
|
|
return MoveNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
moveNodeResult.Succeeded(),
|
|
"HTMLEditor::MoveNodeOrChildren() failed, but ignored");
|
|
if (moveNodeResult.Succeeded()) {
|
|
offset = moveNodeResult.NextInsertionPointRef().Offset();
|
|
result |= moveNodeResult;
|
|
}
|
|
}
|
|
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"Last HTMLEditor::MoveNodeOrChildren() failed");
|
|
return result;
|
|
}
|
|
|
|
MoveNodeResult HTMLEditor::MoveNodeOrChildren(
|
|
nsIContent& aContent, const EditorDOMPoint& aPointToInsert) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aPointToInsert.IsSet());
|
|
|
|
// Check if this node can go into the destination node
|
|
if (HTMLEditUtils::CanNodeContain(*aPointToInsert.GetContainer(), aContent)) {
|
|
// If it can, move it there.
|
|
uint32_t offsetAtInserting = aPointToInsert.Offset();
|
|
nsresult rv = MoveNodeWithTransaction(aContent, aPointToInsert);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return MoveNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return MoveNodeResult(rv);
|
|
}
|
|
// Advance DOM point with offset for keeping backward compatibility.
|
|
// XXX Where should we insert next content if a mutation event listener
|
|
// break the relation of offset and moved node?
|
|
return MoveNodeHandled(aPointToInsert.GetContainer(), ++offsetAtInserting);
|
|
}
|
|
|
|
// If it can't, move its children (if any), and then delete it.
|
|
MoveNodeResult result;
|
|
if (aContent.IsElement()) {
|
|
result = MoveChildren(MOZ_KnownLive(*aContent.AsElement()), aPointToInsert);
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::MoveChildren() failed");
|
|
return result;
|
|
}
|
|
} else {
|
|
result = MoveNodeHandled(aPointToInsert);
|
|
}
|
|
|
|
nsresult rv = DeleteNodeWithTransaction(aContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return MoveNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return MoveNodeResult(rv);
|
|
}
|
|
if (MaybeHasMutationEventListeners()) {
|
|
// Mutation event listener may make `offset` value invalid with
|
|
// removing some previous children while we call
|
|
// `DeleteNodeWithTransaction()` so that we should adjust it here.
|
|
if (!result.NextInsertionPointRef().IsSetAndValid()) {
|
|
result = MoveNodeHandled(
|
|
EditorDOMPoint::AtEndOf(*aPointToInsert.GetContainer()));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
MoveNodeResult HTMLEditor::MoveChildren(Element& aElement,
|
|
const EditorDOMPoint& aPointToInsert) {
|
|
MOZ_ASSERT(aPointToInsert.IsSet());
|
|
|
|
if (NS_WARN_IF(&aElement == aPointToInsert.GetContainer())) {
|
|
return MoveNodeResult(NS_ERROR_INVALID_ARG);
|
|
}
|
|
|
|
MoveNodeResult result = MoveNodeIgnored(aPointToInsert);
|
|
while (aElement.GetFirstChild()) {
|
|
result |= MoveNodeOrChildren(MOZ_KnownLive(*aElement.GetFirstChild()),
|
|
result.NextInsertionPoint());
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::MoveNodeOrChildren() failed");
|
|
return result;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult HTMLEditor::DeleteElementsExceptTableRelatedElements(nsINode& aNode) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!HTMLEditUtils::IsTableElementButNotTable(&aNode)) {
|
|
nsresult rv = DeleteNodeWithTransaction(MOZ_KnownLive(*aNode.AsContent()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
// XXX For performance, this should just call
|
|
// DeleteElementsExceptTableRelatedElements() while there are children
|
|
// in aNode. If we need to avoid infinite loop because mutation event
|
|
// listeners can add unexpected nodes into aNode, we should just loop
|
|
// only original count of the children.
|
|
AutoTArray<OwningNonNull<nsIContent>, 10> childList;
|
|
for (nsIContent* child = aNode.GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
childList.AppendElement(*child);
|
|
}
|
|
|
|
for (const auto& child : childList) {
|
|
// MOZ_KnownLive because 'childList' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv =
|
|
DeleteElementsExceptTableRelatedElements(MOZ_KnownLive(child));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::DeleteElementsExceptTableRelatedElements() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::DeleteMostAncestorMailCiteElementIfEmpty(
|
|
nsIContent& aContent) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// The element must be `<blockquote type="cite">` or
|
|
// `<span _moz_quote="true">`.
|
|
RefPtr<Element> mailCiteElement = GetMostAncestorMailCiteElement(aContent);
|
|
if (!mailCiteElement) {
|
|
return NS_OK;
|
|
}
|
|
bool seenBR = false;
|
|
if (!IsEmptyNodeImpl(*mailCiteElement, true, true, false, &seenBR)) {
|
|
return NS_OK;
|
|
}
|
|
EditorDOMPoint atEmptyMailCiteElement(mailCiteElement);
|
|
{
|
|
AutoEditorDOMPointChildInvalidator lockOffset(atEmptyMailCiteElement);
|
|
nsresult rv = DeleteNodeWithTransaction(*mailCiteElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (!atEmptyMailCiteElement.IsSet() || !seenBR) {
|
|
NS_WARNING_ASSERTION(
|
|
atEmptyMailCiteElement.IsSet(),
|
|
"Mutation event listener might changed the DOM tree during "
|
|
"HTMLEditor::DeleteNodeWithTransaction(), but ignored");
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(atEmptyMailCiteElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(brElement));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::::CollapseSelectionTo() failed, but ignored");
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::MakeOrChangeListAndListItemAsSubAction(
|
|
nsAtom& aListElementOrListItemElementTagName, const nsAString& aBulletType,
|
|
SelectAllOfCurrentList aSelectAllOfCurrentList) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(&aListElementOrListItemElementTagName == nsGkAtoms::ul ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::ol ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dl ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dd ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dt);
|
|
|
|
if (NS_WARN_IF(!mInitSucceeded)) {
|
|
return EditActionIgnored(NS_ERROR_NOT_INITIALIZED);
|
|
}
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
|
|
// XXX EditSubAction::eCreateOrChangeDefinitionListItem and
|
|
// EditSubAction::eCreateOrChangeList are treated differently in
|
|
// HTMLEditor::MaybeSplitElementsAtEveryBRElement(). Only when
|
|
// EditSubAction::eCreateOrChangeList, it splits inline nodes.
|
|
// Currently, it shouldn't be done when we called for formatting
|
|
// `<dd>` or `<dt>` by
|
|
// HTMLEditor::MakeDefinitionListItemWithTransaction(). But this
|
|
// difference may be a bug. We should investigate this later.
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this,
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dd ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dt
|
|
? EditSubAction::eCreateOrChangeDefinitionListItem
|
|
: EditSubAction::eCreateOrChangeList,
|
|
nsIEditor::eNext, ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
nsAtom* listTagName = nullptr;
|
|
nsAtom* listItemTagName = nullptr;
|
|
if (&aListElementOrListItemElementTagName == nsGkAtoms::ul ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::ol) {
|
|
listTagName = &aListElementOrListItemElementTagName;
|
|
listItemTagName = nsGkAtoms::li;
|
|
} else if (&aListElementOrListItemElementTagName == nsGkAtoms::dl) {
|
|
listTagName = &aListElementOrListItemElementTagName;
|
|
listItemTagName = nsGkAtoms::dd;
|
|
} else if (&aListElementOrListItemElementTagName == nsGkAtoms::dd ||
|
|
&aListElementOrListItemElementTagName == nsGkAtoms::dt) {
|
|
listTagName = nsGkAtoms::dl;
|
|
listItemTagName = &aListElementOrListItemElementTagName;
|
|
} else {
|
|
NS_WARNING(
|
|
"aListElementOrListItemElementTagName was neither list element name "
|
|
"nor "
|
|
"definition listitem element name");
|
|
return EditActionResult(NS_ERROR_INVALID_ARG);
|
|
}
|
|
|
|
// Expands selection range to include the immediate block parent, and then
|
|
// further expands to include any ancestors whose children are all in the
|
|
// range.
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
|
|
// ChangeSelectedHardLinesToList() creates AutoSelectionRestorer.
|
|
// Therefore, even if it returns NS_OK, editor might have been destroyed
|
|
// at restoring Selection.
|
|
result = ChangeSelectedHardLinesToList(MOZ_KnownLive(*listTagName),
|
|
MOZ_KnownLive(*listItemTagName),
|
|
aBulletType, aSelectAllOfCurrentList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::ChangeSelectedHardLinesToList() failed");
|
|
return result;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::ChangeSelectedHardLinesToList(
|
|
nsAtom& aListElementTagName, nsAtom& aListItemElementTagName,
|
|
const nsAString& aBulletType,
|
|
SelectAllOfCurrentList aSelectAllOfCurrentList) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
Element* parentListElement =
|
|
aSelectAllOfCurrentList == SelectAllOfCurrentList::Yes
|
|
? GetParentListElementAtSelection()
|
|
: nullptr;
|
|
if (parentListElement) {
|
|
arrayOfContents.AppendElement(
|
|
OwningNonNull<nsIContent>(*parentListElement));
|
|
} else {
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
nsresult rv =
|
|
SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eCreateOrChangeList,
|
|
CollectNonEditableNodes::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrChangeList, CollectNonEditableNodes::No) failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
|
|
// check if all our nodes are <br>s, or empty inlines
|
|
bool bOnlyBreaks = true;
|
|
for (auto& content : arrayOfContents) {
|
|
// if content is not a Break or empty inline, we're done
|
|
if (!content->IsHTMLElement(nsGkAtoms::br) && !IsEmptyInlineNode(content)) {
|
|
bOnlyBreaks = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// if no nodes, we make empty list. Ditto if the user tried to make a list
|
|
// of some # of breaks.
|
|
if (arrayOfContents.IsEmpty() || bOnlyBreaks) {
|
|
// if only breaks, delete them
|
|
if (bOnlyBreaks) {
|
|
for (auto& content : arrayOfContents) {
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv = DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// Make sure we can put a list here.
|
|
if (!HTMLEditUtils::CanNodeContain(*atStartOfSelection.GetContainer(),
|
|
aListElementTagName)) {
|
|
return EditActionCanceled();
|
|
}
|
|
|
|
SplitNodeResult splitAtSelectionStartResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(aListElementTagName,
|
|
atStartOfSelection);
|
|
if (splitAtSelectionStartResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return EditActionResult(splitAtSelectionStartResult.Rv());
|
|
}
|
|
RefPtr<Element> theList = CreateNodeWithTransaction(
|
|
aListElementTagName, splitAtSelectionStartResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!theList) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
RefPtr<Element> theListItem = CreateNodeWithTransaction(
|
|
aListItemElementTagName, EditorDOMPoint(theList, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!theListItem) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = theListItem;
|
|
// Put selection in new list item and don't restore the Selection.
|
|
restoreSelectionLater.Abort();
|
|
nsresult rv = CollapseSelectionToStartOf(*theListItem);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
|
|
// if there is only one node in the array, and it is a list, div, or
|
|
// blockquote, then look inside of it until we find inner list or content.
|
|
if (arrayOfContents.Length() == 1) {
|
|
if (Element* deepestDivBlockquoteOrListElement =
|
|
GetDeepestEditableOnlyChildDivBlockquoteOrListElement(
|
|
arrayOfContents[0])) {
|
|
if (deepestDivBlockquoteOrListElement->IsAnyOfHTMLElements(
|
|
nsGkAtoms::div, nsGkAtoms::blockquote)) {
|
|
arrayOfContents.Clear();
|
|
CollectChildren(*deepestDivBlockquoteOrListElement, arrayOfContents, 0,
|
|
CollectListChildren::No, CollectTableChildren::No,
|
|
CollectNonEditableNodes::Yes);
|
|
} else {
|
|
arrayOfContents.ReplaceElementAt(
|
|
0, OwningNonNull<nsIContent>(*deepestDivBlockquoteOrListElement));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ok, now go through all the nodes and put then in the list,
|
|
// or whatever is approriate. Wohoo!
|
|
|
|
uint32_t countOfCollectedContents = arrayOfContents.Length();
|
|
RefPtr<Element> curList, prevListItem;
|
|
|
|
for (uint32_t i = 0; i < countOfCollectedContents; i++) {
|
|
// here's where we actually figure out what to do
|
|
OwningNonNull<nsIContent> content = arrayOfContents[i];
|
|
|
|
// make sure we don't assemble content that is in different table cells
|
|
// into the same list. respect table cell boundaries when listifying.
|
|
if (curList &&
|
|
HTMLEditor::NodesInDifferentTableElements(*curList, content)) {
|
|
curList = nullptr;
|
|
}
|
|
|
|
// If current node is a `<br>` element, delete it and forget previous
|
|
// list item element.
|
|
// If current node is an empty inline node, just delete it.
|
|
if (EditorUtils::IsEditableContent(content, EditorType::HTML) &&
|
|
(content->IsHTMLElement(nsGkAtoms::br) || IsEmptyInlineNode(content))) {
|
|
nsresult rv = DeleteNodeWithTransaction(*content);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
if (content->IsHTMLElement(nsGkAtoms::br)) {
|
|
prevListItem = nullptr;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(content)) {
|
|
// If we met a list element and current list element is not a descendant
|
|
// of the list, append current node to end of the current list element.
|
|
// Then, wrap it with list item element and delete the old container.
|
|
if (curList && !EditorUtils::IsDescendantOf(*content, *curList)) {
|
|
nsresult rv = MoveNodeToEndWithTransaction(*content, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
CreateElementResult convertListTypeResult =
|
|
ChangeListElementType(MOZ_KnownLive(*content->AsElement()),
|
|
aListElementTagName, aListItemElementTagName);
|
|
if (convertListTypeResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::ChangeListElementType() failed");
|
|
return EditActionResult(convertListTypeResult.Rv());
|
|
}
|
|
rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*convertListTypeResult.GetNewNode()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
prevListItem = nullptr;
|
|
continue;
|
|
}
|
|
|
|
// If current list element is in found list element or we've not met a
|
|
// list element, convert current list element to proper type.
|
|
CreateElementResult convertListTypeResult =
|
|
ChangeListElementType(MOZ_KnownLive(*content->AsElement()),
|
|
aListElementTagName, aListItemElementTagName);
|
|
if (convertListTypeResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::ChangeListElementType() failed");
|
|
return EditActionResult(convertListTypeResult.Rv());
|
|
}
|
|
curList = convertListTypeResult.forget();
|
|
prevListItem = nullptr;
|
|
continue;
|
|
}
|
|
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
MOZ_ASSERT(atContent.IsSetAndValid());
|
|
if (HTMLEditUtils::IsListItem(content)) {
|
|
// If current list item element is not in proper list element, we need
|
|
// to conver the list element.
|
|
if (!atContent.IsContainerHTMLElement(&aListElementTagName)) {
|
|
// If we've not met a list element or current node is not in current
|
|
// list element, insert a list element at current node and set
|
|
// current list element to the new one.
|
|
if (!curList || EditorUtils::IsDescendantOf(*content, *curList)) {
|
|
if (NS_WARN_IF(!atContent.GetContainerAsContent())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> newLeftNode =
|
|
SplitNodeWithTransaction(atContent, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error.SuppressException();
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING("EditorBase::SplitNodeWithTransaction() failed");
|
|
return EditActionResult(error.StealNSResult());
|
|
}
|
|
curList = CreateNodeWithTransaction(
|
|
aListElementTagName, EditorDOMPoint(atContent.GetContainer()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!curList) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
// Then, move current node into current list element.
|
|
nsresult rv = MoveNodeToEndWithTransaction(*content, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// Convert list item type if current node is different list item type.
|
|
if (!content->IsHTMLElement(&aListItemElementTagName)) {
|
|
RefPtr<Element> newListItemElement = ReplaceContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()), aListItemElementTagName);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newListItemElement) {
|
|
NS_WARNING("EditorBase::ReplaceContainerWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
} else {
|
|
// If we've not met a list element, set current list element to the
|
|
// parent of current list item element.
|
|
if (!curList) {
|
|
curList = atContent.GetContainerAsElement();
|
|
NS_WARNING_ASSERTION(
|
|
HTMLEditUtils::IsList(curList),
|
|
"Current list item parent is not a list element");
|
|
}
|
|
// If current list item element is not a child of current list element,
|
|
// move it into current list item.
|
|
else if (atContent.GetContainer() != curList) {
|
|
nsresult rv = MoveNodeToEndWithTransaction(*content, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
// Then, if current list item element is not proper type for current
|
|
// list element, convert list item element to proper element.
|
|
if (!content->IsHTMLElement(&aListItemElementTagName)) {
|
|
RefPtr<Element> newListItemElement = ReplaceContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()), aListItemElementTagName);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newListItemElement) {
|
|
NS_WARNING("EditorBase::ReplaceContainerWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
}
|
|
Element* element = Element::FromNode(content);
|
|
if (NS_WARN_IF(!element)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
// If bullet type is specified, set list type attribute.
|
|
// XXX Cannot we set type attribute before inserting the list item
|
|
// element into the DOM tree?
|
|
if (!aBulletType.IsEmpty()) {
|
|
nsresult rv = SetAttributeWithTransaction(
|
|
MOZ_KnownLive(*element), *nsGkAtoms::type, aBulletType);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::SetAttributeWithTransaction(nsGkAtoms::type) "
|
|
"failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Otherwise, remove list type attribute if there is.
|
|
if (!element->HasAttr(nsGkAtoms::type)) {
|
|
continue;
|
|
}
|
|
nsresult rv = RemoveAttributeWithTransaction(MOZ_KnownLive(*element),
|
|
*nsGkAtoms::type);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::type) "
|
|
"failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
MOZ_ASSERT(!HTMLEditUtils::IsList(content) &&
|
|
!HTMLEditUtils::IsListItem(content));
|
|
|
|
// If current node is a `<div>` element, replace it in the array with
|
|
// its children.
|
|
// XXX I think that this should be done when we collect the nodes above.
|
|
// Then, we can change this `for` loop to ranged-for loop.
|
|
if (content->IsHTMLElement(nsGkAtoms::div)) {
|
|
prevListItem = nullptr;
|
|
CollectChildren(*content, arrayOfContents, i + 1,
|
|
CollectListChildren::Yes, CollectTableChildren::Yes,
|
|
CollectNonEditableNodes::Yes);
|
|
nsresult rv =
|
|
RemoveContainerWithTransaction(MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::RemoveContainerWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// Extend the loop length to handle all children collected here.
|
|
countOfCollectedContents = arrayOfContents.Length();
|
|
continue;
|
|
}
|
|
|
|
// If we've not met a list element, create a list element and make it
|
|
// current list element.
|
|
if (!curList) {
|
|
SplitNodeResult splitCurNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(aListElementTagName,
|
|
atContent);
|
|
if (splitCurNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return EditActionResult(splitCurNodeResult.Rv());
|
|
}
|
|
prevListItem = nullptr;
|
|
curList = CreateNodeWithTransaction(aListElementTagName,
|
|
splitCurNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!curList) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
// Set new block element of top level edit sub-action to the new list
|
|
// element for setting selection into it.
|
|
// XXX This must be wrong. If we're handling nested edit action,
|
|
// we shouldn't overwrite the new block element.
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curList;
|
|
|
|
// atContent is now referring the right node with mOffset but
|
|
// referring the left node with mRef. So, invalidate it now.
|
|
atContent.Clear();
|
|
}
|
|
|
|
// If we're currently handling contents of a list item and current node
|
|
// is not a block element, move current node into the list item.
|
|
if (HTMLEditUtils::IsInlineElement(content) && prevListItem) {
|
|
nsresult rv = MoveNodeToEndWithTransaction(*content, *prevListItem);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// If current node is a paragraph, that means that it does not contain
|
|
// block children so that we can just replace it with new list item
|
|
// element and move it into current list element.
|
|
// XXX This is too rough handling. If web apps modifies DOM tree directly,
|
|
// any elements can have block elements as children.
|
|
if (content->IsHTMLElement(nsGkAtoms::p)) {
|
|
RefPtr<Element> newListItemElement = ReplaceContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()), aListItemElementTagName);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newListItemElement) {
|
|
NS_WARNING("EditorBase::ReplaceContainerWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
prevListItem = nullptr;
|
|
nsresult rv = MoveNodeToEndWithTransaction(*newListItemElement, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// XXX Why don't we set `type` attribute here??
|
|
continue;
|
|
}
|
|
|
|
// If current node is not a paragraph, wrap current node with new list
|
|
// item element and move it into current list element.
|
|
RefPtr<Element> newListItemElement =
|
|
InsertContainerWithTransaction(*content, aListItemElementTagName);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newListItemElement) {
|
|
NS_WARNING("EditorBase::InsertContainerWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
// If current node is not a block element, new list item should have
|
|
// following inline nodes too.
|
|
if (HTMLEditUtils::IsInlineElement(content)) {
|
|
prevListItem = newListItemElement;
|
|
} else {
|
|
prevListItem = nullptr;
|
|
}
|
|
nsresult rv = MoveNodeToEndWithTransaction(*newListItemElement, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// XXX Why don't we set `type` attribute here??
|
|
}
|
|
|
|
return EditActionHandled();
|
|
}
|
|
|
|
nsresult HTMLEditor::RemoveListAtSelectionAsSubAction() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result.Rv();
|
|
}
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eRemoveList, nsIEditor::eNext, ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return ignoredError.StealNSResult();
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
{
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
nsresult rv =
|
|
SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eCreateOrChangeList,
|
|
CollectNonEditableNodes::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrChangeList, CollectNonEditableNodes::No) failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Remove all non-editable nodes. Leave them be.
|
|
// XXX SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges()
|
|
// should return only editable contents when it's called with
|
|
// CollectNonEditableNodes::No.
|
|
for (int32_t i = arrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent>& content = arrayOfContents[i];
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
arrayOfContents.RemoveElementAt(i);
|
|
}
|
|
}
|
|
|
|
// Only act on lists or list items in the array
|
|
for (auto& content : arrayOfContents) {
|
|
// here's where we actually figure out what to do
|
|
if (HTMLEditUtils::IsListItem(content)) {
|
|
// unlist this listitem
|
|
nsresult rv = LiftUpListItemElement(MOZ_KnownLive(*content->AsElement()),
|
|
LiftUpFromAllParentListElements::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::LiftUpListItemElement(LiftUpFromAllParentListElements:"
|
|
":Yes) failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
if (HTMLEditUtils::IsList(content)) {
|
|
// node is a list, move list items out
|
|
nsresult rv =
|
|
DestroyListStructureRecursively(MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DestroyListStructureRecursively() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::FormatBlockContainerWithTransaction(nsAtom& blockType) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eCreateOrRemoveBlock,
|
|
CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eCreateOrRemoveBlock, CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
// If there is no visible and editable nodes in the edit targets, make an
|
|
// empty block.
|
|
// XXX Isn't this odd if there are only non-editable visible nodes?
|
|
if (IsEmptyOneHardLine(arrayOfContents)) {
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorDOMPoint pointToInsertBlock(firstRange->StartRef());
|
|
if (&blockType == nsGkAtoms::normal || &blockType == nsGkAtoms::_empty) {
|
|
if (!pointToInsertBlock.IsInContentNode()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::FormatBlockContainerWithTransaction() couldn't find "
|
|
"block parent because container of the point is not content");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// We are removing blocks (going to "body text")
|
|
RefPtr<Element> blockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*pointToInsertBlock.ContainerAsContent());
|
|
if (!blockElement) {
|
|
NS_WARNING(
|
|
"HTMLEditor::FormatBlockContainerWithTransaction() couldn't find "
|
|
"block parent");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (!HTMLEditUtils::IsFormatNode(blockElement)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If the first editable node after selection is a br, consume it.
|
|
// Otherwise it gets pushed into a following block after the split,
|
|
// which is visually bad.
|
|
nsCOMPtr<nsIContent> brContent =
|
|
GetNextEditableHTMLNode(pointToInsertBlock);
|
|
if (brContent && brContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(pointToInsertBlock);
|
|
rv = DeleteNodeWithTransaction(*brContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
// Do the splits!
|
|
SplitNodeResult splitNodeResult = SplitNodeDeepWithTransaction(
|
|
*blockElement, pointToInsertBlock,
|
|
SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING("EditorBase::SplitNodeDeepWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
EditorDOMPoint pointToInsertBRNode(splitNodeResult.SplitPoint());
|
|
// Put a <br> element at the split point
|
|
brContent = InsertBRElementWithTransaction(pointToInsertBRNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brContent) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Don't restore the selection
|
|
restoreSelectionLater.Abort();
|
|
// Put selection at the split point
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(brContent));
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
// We are making a block. Consume a br, if needed.
|
|
nsCOMPtr<nsIContent> brNode =
|
|
GetNextEditableHTMLNodeInBlock(pointToInsertBlock);
|
|
if (brNode && brNode->IsHTMLElement(nsGkAtoms::br)) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(pointToInsertBlock);
|
|
rv = DeleteNodeWithTransaction(*brNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
// We don't need to act on this node any more
|
|
arrayOfContents.RemoveElement(brNode);
|
|
}
|
|
// Make sure we can put a block here.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(blockType,
|
|
pointToInsertBlock);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
RefPtr<Element> block =
|
|
CreateNodeWithTransaction(blockType, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!block) {
|
|
NS_WARNING("CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = block;
|
|
// Delete anything that was in the list of nodes
|
|
while (!arrayOfContents.IsEmpty()) {
|
|
OwningNonNull<nsIContent>& content = arrayOfContents[0];
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
rv = DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
arrayOfContents.RemoveElementAt(0);
|
|
}
|
|
// Don't restore the selection
|
|
restoreSelectionLater.Abort();
|
|
// Put selection in new block
|
|
rv = CollapseSelectionToStartOf(*block);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
// Okay, now go through all the nodes and make the right kind of blocks, or
|
|
// whatever is approriate. Woohoo! Note: blockquote is handled a little
|
|
// differently.
|
|
if (&blockType == nsGkAtoms::blockquote) {
|
|
nsresult rv = MoveNodesIntoNewBlockquoteElement(arrayOfContents);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::MoveNodesIntoNewBlockquoteElement() failed");
|
|
return rv;
|
|
}
|
|
if (&blockType == nsGkAtoms::normal || &blockType == nsGkAtoms::_empty) {
|
|
nsresult rv = RemoveBlockContainerElements(arrayOfContents);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::RemoveBlockContainerElements() failed");
|
|
return rv;
|
|
}
|
|
rv = CreateOrChangeBlockContainerElement(arrayOfContents, blockType);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CreateOrChangeBlockContainerElement() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::MaybeInsertPaddingBRElementForEmptyLastLineAtSelection() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
const RangeBoundary& atStartOfSelection = firstRange->StartRef();
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (!atStartOfSelection.Container()->IsElement()) {
|
|
return NS_OK;
|
|
}
|
|
OwningNonNull<Element> startContainerElement =
|
|
*atStartOfSelection.Container()->AsElement();
|
|
nsresult rv =
|
|
InsertPaddingBRElementForEmptyLastLineIfNeeded(startContainerElement);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineIfNeeded() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::IndentAsSubAction() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eIndent, nsIEditor::eNext, ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
result |= HandleIndentAtSelection();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::HandleIndentAtSelection() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
nsresult rv = MaybeInsertPaddingBRElementForEmptyLastLineAtSelection();
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"MaybeInsertPaddingBRElementForEmptyLastLineAtSelection() failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
|
|
// Helper for Handle[CSS|HTML]IndentAtSelectionInternal
|
|
nsresult HTMLEditor::IndentListChild(RefPtr<Element>* aCurList,
|
|
const EditorDOMPoint& aCurPoint,
|
|
nsIContent& aContent) {
|
|
MOZ_ASSERT(HTMLEditUtils::IsList(aCurPoint.GetContainer()),
|
|
"unexpected container");
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
// some logic for putting list items into nested lists...
|
|
|
|
// Check for whether we should join a list that follows aContent.
|
|
// We do this if the next element is a list, and the list is of the
|
|
// same type (li/ol) as aContent was a part it.
|
|
if (nsIContent* nextEditableSibling =
|
|
GetNextHTMLSibling(&aContent, SkipWhitespace::Yes)) {
|
|
if (HTMLEditUtils::IsList(nextEditableSibling) &&
|
|
aCurPoint.GetContainer()->NodeInfo()->NameAtom() ==
|
|
nextEditableSibling->NodeInfo()->NameAtom() &&
|
|
aCurPoint.GetContainer()->NodeInfo()->NamespaceID() ==
|
|
nextEditableSibling->NodeInfo()->NamespaceID()) {
|
|
nsresult rv = MoveNodeWithTransaction(
|
|
aContent, EditorDOMPoint(nextEditableSibling, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EdigtorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Check for whether we should join a list that preceeds aContent.
|
|
// We do this if the previous element is a list, and the list is of
|
|
// the same type (li/ol) as aContent was a part of.
|
|
if (nsCOMPtr<nsIContent> previousEditableSibling =
|
|
GetPriorHTMLSibling(&aContent, SkipWhitespace::Yes)) {
|
|
if (HTMLEditUtils::IsList(previousEditableSibling) &&
|
|
aCurPoint.GetContainer()->NodeInfo()->NameAtom() ==
|
|
previousEditableSibling->NodeInfo()->NameAtom() &&
|
|
aCurPoint.GetContainer()->NodeInfo()->NamespaceID() ==
|
|
previousEditableSibling->NodeInfo()->NamespaceID()) {
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(aContent, *previousEditableSibling);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// check to see if aCurList is still appropriate. Which it is if
|
|
// aContent is still right after it in the same list.
|
|
nsIContent* previousEditableSibling =
|
|
*aCurList ? GetPriorHTMLSibling(&aContent, SkipWhitespace::Yes) : nullptr;
|
|
if (!*aCurList ||
|
|
(previousEditableSibling && previousEditableSibling != *aCurList)) {
|
|
nsAtom* containerName = aCurPoint.GetContainer()->NodeInfo()->NameAtom();
|
|
// Create a new nested list of correct type.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(
|
|
MOZ_KnownLive(*containerName), aCurPoint);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
*aCurList = CreateNodeWithTransaction(MOZ_KnownLive(*containerName),
|
|
splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!*aCurList) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// aCurList is now the correct thing to put aContent in
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = *aCurList;
|
|
}
|
|
// tuck the node into the end of the active list
|
|
RefPtr<nsINode> container = *aCurList;
|
|
nsresult rv = MoveNodeToEndWithTransaction(aContent, *container);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleIndentAtSelection() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed the selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
if (IsCSSEnabled()) {
|
|
nsresult rv = HandleCSSIndentAtSelection();
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleCSSIndentAtSelection() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
rv = HandleHTMLIndentAtSelection();
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleHTMLIndent() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleCSSIndentAtSelection() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// HandleCSSIndentAtSelectionInternal() creates AutoSelectionRestorer.
|
|
// Therefore, even if it returns NS_OK, editor might have been destroyed
|
|
// at restoring Selection.
|
|
nsresult rv = HandleCSSIndentAtSelectionInternal();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleCSSIndentAtSelectionInternal() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleCSSIndentAtSelectionInternal() {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
|
|
// short circuit: detect case of collapsed selection inside an <li>.
|
|
// just sublist that <li>. This prevents bug 97797.
|
|
|
|
if (SelectionRefPtr()->IsCollapsed()) {
|
|
EditorRawDOMPoint atCaret(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
MOZ_ASSERT(atCaret.IsInContentNode());
|
|
Element* blockElement = HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*atCaret.ContainerAsContent());
|
|
if (blockElement && HTMLEditUtils::IsListItem(blockElement)) {
|
|
arrayOfContents.AppendElement(*blockElement);
|
|
}
|
|
}
|
|
|
|
if (arrayOfContents.IsEmpty()) {
|
|
nsresult rv =
|
|
SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eIndent,
|
|
CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eIndent, CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// If there is no visible and editable nodes in the edit targets, make an
|
|
// empty block.
|
|
// XXX Isn't this odd if there are only non-editable visible nodes?
|
|
if (IsEmptyOneHardLine(arrayOfContents)) {
|
|
// get selection location
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// make sure we can put a block here
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::div,
|
|
atStartOfSelection);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms::"
|
|
"div) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
RefPtr<Element> theBlock = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!theBlock) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = theBlock;
|
|
nsresult rv = ChangeMarginStart(*theBlock, ChangeMargin::Increase);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::ChangeMarginStart() failed, but ignored");
|
|
// delete anything that was in the list of nodes
|
|
// XXX We don't need to remove the nodes from the array for performance.
|
|
while (!arrayOfContents.IsEmpty()) {
|
|
OwningNonNull<nsIContent>& content = arrayOfContents[0];
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
rv = DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
arrayOfContents.RemoveElementAt(0);
|
|
}
|
|
// Don't restore the selection
|
|
restoreSelectionLater.Abort();
|
|
// put selection in new block
|
|
rv = CollapseSelectionToStartOf(*theBlock);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Ok, now go through all the nodes and put them in a blockquote,
|
|
// or whatever is appropriate.
|
|
RefPtr<Element> curList, curQuote;
|
|
for (OwningNonNull<nsIContent>& content : arrayOfContents) {
|
|
// Here's where we actually figure out what to do.
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
continue;
|
|
}
|
|
|
|
// Ignore all non-editable nodes. Leave them be.
|
|
// XXX We ignore non-editable nodes here, but not so in the above block.
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(atContent.GetContainer())) {
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv =
|
|
IndentListChild(&curList, atContent, MOZ_KnownLive(content));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::IndentListChild() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Not a list item.
|
|
|
|
if (HTMLEditUtils::IsBlockElement(content)) {
|
|
nsresult rv = ChangeMarginStart(MOZ_KnownLive(*content->AsElement()),
|
|
ChangeMargin::Increase);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::ChangeMarginStart() failed, but ignored");
|
|
curQuote = nullptr;
|
|
continue;
|
|
}
|
|
|
|
if (!curQuote) {
|
|
// First, check that our element can contain a div.
|
|
if (!HTMLEditUtils::CanNodeContain(*atContent.GetContainer(),
|
|
*nsGkAtoms::div)) {
|
|
return NS_OK; // cancelled
|
|
}
|
|
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::div,
|
|
atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms:"
|
|
":div) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
curQuote = CreateNodeWithTransaction(*nsGkAtoms::div,
|
|
splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curQuote) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = ChangeMarginStart(*curQuote, ChangeMargin::Increase);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::ChangeMarginStart() failed, but ignored");
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curQuote;
|
|
// curQuote is now the correct thing to put content in
|
|
}
|
|
|
|
// tuck the node into the end of the active blockquote
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *curQuote);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleHTMLIndentAtSelection() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// HandleHTMLIndentAtSelectionInternal() creates AutoSelectionRestorer.
|
|
// Therefore, even if it returns NS_OK, editor might have been destroyed
|
|
// at restoring Selection.
|
|
nsresult rv = HandleHTMLIndentAtSelectionInternal();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::HandleHTMLIndentAtSelectionInternal() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleHTMLIndentAtSelectionInternal() {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
// convert the selection ranges into "promoted" selection ranges:
|
|
// this basically just expands the range to include the immediate
|
|
// block parent, and then further expands to include any ancestors
|
|
// whose children are all in the range
|
|
|
|
AutoTArray<RefPtr<nsRange>, 4> arrayOfRanges;
|
|
GetSelectionRangesExtendedToHardLineStartAndEnd(arrayOfRanges,
|
|
EditSubAction::eIndent);
|
|
|
|
// use these ranges to construct a list of nodes to act on.
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodes(
|
|
arrayOfRanges, arrayOfContents, EditSubAction::eIndent,
|
|
CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitInlinesAndCollectEditTargetNodes(eIndent, "
|
|
"CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
// If there is no visible and editable nodes in the edit targets, make an
|
|
// empty block.
|
|
// XXX Isn't this odd if there are only non-editable visible nodes?
|
|
if (IsEmptyOneHardLine(arrayOfContents)) {
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Make sure we can put a block here.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::blockquote,
|
|
atStartOfSelection);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms::"
|
|
"blockquote) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
RefPtr<Element> theBlock = CreateNodeWithTransaction(
|
|
*nsGkAtoms::blockquote, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!theBlock) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = theBlock;
|
|
// delete anything that was in the list of nodes
|
|
// XXX We don't need to remove the nodes from the array for performance.
|
|
while (!arrayOfContents.IsEmpty()) {
|
|
OwningNonNull<nsIContent>& content = arrayOfContents[0];
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
rv = DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
arrayOfContents.RemoveElementAt(0);
|
|
}
|
|
// Don't restore the selection
|
|
restoreSelectionLater.Abort();
|
|
nsresult rv = CollapseSelectionToStartOf(*theBlock);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Ok, now go through all the nodes and put them in a blockquote,
|
|
// or whatever is appropriate. Wohoo!
|
|
RefPtr<Element> curList, curQuote, indentedLI;
|
|
for (OwningNonNull<nsIContent>& content : arrayOfContents) {
|
|
// Here's where we actually figure out what to do.
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
continue;
|
|
}
|
|
|
|
// Ignore all non-editable nodes. Leave them be.
|
|
// XXX We ignore non-editable nodes here, but not so in the above block.
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(atContent.GetContainer())) {
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv =
|
|
IndentListChild(&curList, atContent, MOZ_KnownLive(content));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::IndentListChild() failed");
|
|
return rv;
|
|
}
|
|
// forget curQuote, if any
|
|
curQuote = nullptr;
|
|
continue;
|
|
}
|
|
|
|
// Not a list item, use blockquote?
|
|
|
|
// if we are inside a list item, we don't want to blockquote, we want
|
|
// to sublist the list item. We may have several nodes listed in the
|
|
// array of nodes to act on, that are in the same list item. Since
|
|
// we only want to indent that li once, we must keep track of the most
|
|
// recent indented list item, and not indent it if we find another node
|
|
// to act on that is still inside the same li.
|
|
if (RefPtr<Element> listItem = GetNearestAncestorListItemElement(content)) {
|
|
if (indentedLI == listItem) {
|
|
// already indented this list item
|
|
continue;
|
|
}
|
|
// check to see if curList is still appropriate. Which it is if
|
|
// content is still right after it in the same list.
|
|
nsIContent* previousEditableSibling =
|
|
curList ? GetPriorHTMLSibling(listItem) : nullptr;
|
|
if (!curList ||
|
|
(previousEditableSibling && previousEditableSibling != curList)) {
|
|
EditorDOMPoint atListItem(listItem);
|
|
if (NS_WARN_IF(!listItem)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsAtom* containerName =
|
|
atListItem.GetContainer()->NodeInfo()->NameAtom();
|
|
// Create a new nested list of correct type.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(
|
|
MOZ_KnownLive(*containerName), atListItem);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() "
|
|
"failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
curList = CreateNodeWithTransaction(MOZ_KnownLive(*containerName),
|
|
splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curList) {
|
|
NS_WARNING("HTMLEditor::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
rv = MoveNodeToEndWithTransaction(*listItem, *curList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
// remember we indented this li
|
|
indentedLI = listItem;
|
|
|
|
continue;
|
|
}
|
|
|
|
// need to make a blockquote to put things in if we haven't already,
|
|
// or if this node doesn't go in blockquote we used earlier.
|
|
// One reason it might not go in prio blockquote is if we are now
|
|
// in a different table cell.
|
|
if (curQuote &&
|
|
HTMLEditor::NodesInDifferentTableElements(*curQuote, content)) {
|
|
curQuote = nullptr;
|
|
}
|
|
|
|
if (!curQuote) {
|
|
// First, check that our element can contain a blockquote.
|
|
if (!HTMLEditUtils::CanNodeContain(*atContent.GetContainer(),
|
|
*nsGkAtoms::blockquote)) {
|
|
return NS_OK; // cancelled
|
|
}
|
|
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::blockquote,
|
|
atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms:"
|
|
":blockquote) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
curQuote = CreateNodeWithTransaction(*nsGkAtoms::blockquote,
|
|
splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curQuote) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::blockquote) "
|
|
"failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curQuote;
|
|
// curQuote is now the correct thing to put curNode in
|
|
}
|
|
|
|
// tuck the node into the end of the active blockquote
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to
|
|
// keep it alive.
|
|
rv = MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *curQuote);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
// forget curList, if any
|
|
curList = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::OutdentAsSubAction() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eOutdent, nsIEditor::eNext, ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
result |= HandleOutdentAtSelection();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::HandleOutdentAtSelection() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed the selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
nsresult rv = MaybeInsertPaddingBRElementForEmptyLastLineAtSelection();
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::MaybeInsertPaddingBRElementForEmptyLastLineAtSelection() "
|
|
"failed");
|
|
return result.SetResult(rv);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleOutdentAtSelection() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
|
|
// HandleOutdentAtSelectionInternal() creates AutoSelectionRestorer.
|
|
// Therefore, even if it returns NS_OK, the editor might have been destroyed
|
|
// at restoring Selection.
|
|
SplitRangeOffFromNodeResult outdentResult =
|
|
HandleOutdentAtSelectionInternal();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (outdentResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::HandleOutdentAtSelectionInternal() failed");
|
|
return EditActionHandled(outdentResult.Rv());
|
|
}
|
|
|
|
// Make sure selection didn't stick to last piece of content in old bq (only
|
|
// a problem for collapsed selections)
|
|
if (!outdentResult.GetLeftContent() && !outdentResult.GetRightContent()) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
// Push selection past end of left element of last split indented element.
|
|
if (outdentResult.GetLeftContent()) {
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionHandled();
|
|
}
|
|
const RangeBoundary& atStartOfSelection = firstRange->StartRef();
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
if (atStartOfSelection.Container() == outdentResult.GetLeftContent() ||
|
|
EditorUtils::IsDescendantOf(*atStartOfSelection.Container(),
|
|
*outdentResult.GetLeftContent())) {
|
|
// Selection is inside the left node - push it past it.
|
|
EditorRawDOMPoint afterRememberedLeftBQ(
|
|
EditorRawDOMPoint::After(*outdentResult.GetLeftContent()));
|
|
NS_WARNING_ASSERTION(
|
|
afterRememberedLeftBQ.IsSet(),
|
|
"Failed to set after remembered left blockquote element");
|
|
nsresult rv = CollapseSelectionTo(afterRememberedLeftBQ);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
}
|
|
}
|
|
// And pull selection before beginning of right element of last split
|
|
// indented element.
|
|
if (outdentResult.GetRightContent()) {
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionHandled();
|
|
}
|
|
const RangeBoundary& atStartOfSelection = firstRange->StartRef();
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
if (atStartOfSelection.Container() == outdentResult.GetRightContent() ||
|
|
EditorUtils::IsDescendantOf(*atStartOfSelection.Container(),
|
|
*outdentResult.GetRightContent())) {
|
|
// Selection is inside the right element - push it before it.
|
|
EditorRawDOMPoint atRememberedRightBQ(outdentResult.GetRightContent());
|
|
nsresult rv = CollapseSelectionTo(atRememberedRightBQ);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
}
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
|
|
SplitRangeOffFromNodeResult HTMLEditor::HandleOutdentAtSelectionInternal() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
bool useCSS = IsCSSEnabled();
|
|
|
|
// Convert the selection ranges into "promoted" selection ranges: this
|
|
// basically just expands the range to include the immediate block parent,
|
|
// and then further expands to include any ancestors whose children are all
|
|
// in the range
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eOutdent, CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges() "
|
|
"failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> leftContentOfLastOutdented;
|
|
nsCOMPtr<nsIContent> middleContentOfLastOutdented;
|
|
nsCOMPtr<nsIContent> rightContentOfLastOutdented;
|
|
RefPtr<Element> indentedParentElement;
|
|
nsCOMPtr<nsIContent> firstContentToBeOutdented, lastContentToBeOutdented;
|
|
BlockIndentedWith indentedParentIndentedWith = BlockIndentedWith::HTML;
|
|
for (OwningNonNull<nsIContent>& content : arrayOfContents) {
|
|
// Here's where we actually figure out what to do
|
|
EditorDOMPoint atContent(content);
|
|
if (!atContent.IsSet()) {
|
|
continue;
|
|
}
|
|
|
|
// If it's a `<blockquote>`, remove it to outdent its children.
|
|
if (content->IsHTMLElement(nsGkAtoms::blockquote)) {
|
|
// If we've already found an ancestor block element indented, we need to
|
|
// split it and remove the block element first.
|
|
if (indentedParentElement) {
|
|
MOZ_ASSERT(indentedParentElement == content);
|
|
SplitRangeOffFromNodeResult outdentResult = OutdentPartOfBlock(
|
|
*indentedParentElement, *firstContentToBeOutdented,
|
|
*lastContentToBeOutdented, indentedParentIndentedWith);
|
|
if (outdentResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::OutdentPartOfBlock() failed");
|
|
return outdentResult;
|
|
}
|
|
leftContentOfLastOutdented = outdentResult.GetLeftContent();
|
|
middleContentOfLastOutdented = outdentResult.GetMiddleContent();
|
|
rightContentOfLastOutdented = outdentResult.GetRightContent();
|
|
indentedParentElement = nullptr;
|
|
firstContentToBeOutdented = nullptr;
|
|
lastContentToBeOutdented = nullptr;
|
|
indentedParentIndentedWith = BlockIndentedWith::HTML;
|
|
}
|
|
nsresult rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// If we're using CSS and the node is a block element, check its start
|
|
// margin whether it's indented with CSS.
|
|
if (useCSS && HTMLEditUtils::IsBlockElement(content)) {
|
|
nsStaticAtom& marginProperty =
|
|
MarginPropertyAtomForIndent(MOZ_KnownLive(content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
nsAutoString value;
|
|
DebugOnly<nsresult> rvIgnored =
|
|
CSSEditUtils::GetSpecifiedProperty(content, marginProperty, value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetSpecifiedProperty() failed, but ignored");
|
|
float startMargin = 0;
|
|
RefPtr<nsAtom> unit;
|
|
CSSEditUtils::ParseLength(value, &startMargin, getter_AddRefs(unit));
|
|
// If indented with CSS, we should decrease the start mergin.
|
|
if (startMargin > 0) {
|
|
nsresult rv = ChangeMarginStart(MOZ_KnownLive(*content->AsElement()),
|
|
ChangeMargin::Decrease);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::ChangeMarginStart(ChangeMargin::"
|
|
"Decrease) failed, but ignored");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// If it's a list item, we should treat as that it "indents" its children.
|
|
if (HTMLEditUtils::IsListItem(content)) {
|
|
// If it is a list item, that means we are not outdenting whole list.
|
|
// XXX I don't understand this sentence... We may meet parent list
|
|
// element, no?
|
|
if (indentedParentElement) {
|
|
SplitRangeOffFromNodeResult outdentResult = OutdentPartOfBlock(
|
|
*indentedParentElement, *firstContentToBeOutdented,
|
|
*lastContentToBeOutdented, indentedParentIndentedWith);
|
|
if (NS_WARN_IF(outdentResult.Failed())) {
|
|
return outdentResult;
|
|
}
|
|
leftContentOfLastOutdented = outdentResult.GetLeftContent();
|
|
middleContentOfLastOutdented = outdentResult.GetMiddleContent();
|
|
rightContentOfLastOutdented = outdentResult.GetRightContent();
|
|
indentedParentElement = nullptr;
|
|
firstContentToBeOutdented = nullptr;
|
|
lastContentToBeOutdented = nullptr;
|
|
indentedParentIndentedWith = BlockIndentedWith::HTML;
|
|
}
|
|
// XXX `content` could become different element since
|
|
// `OutdentPartOfBlock()` may run mutation event listeners.
|
|
rv = LiftUpListItemElement(MOZ_KnownLive(*content->AsElement()),
|
|
LiftUpFromAllParentListElements::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::LiftUpListItemElement(LiftUpFromAllParentListElements:"
|
|
":No) failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// If we've found an ancestor block element which indents its children
|
|
// and the current node is NOT a descendant of it, we should remove it to
|
|
// outdent its children. Otherwise, i.e., current node is a descendant of
|
|
// it, we meet new node which should be outdented when the indented parent
|
|
// is removed.
|
|
if (indentedParentElement) {
|
|
if (EditorUtils::IsDescendantOf(*content, *indentedParentElement)) {
|
|
// Extend the range to be outdented at removing the
|
|
// indentedParentElement.
|
|
lastContentToBeOutdented = content;
|
|
continue;
|
|
}
|
|
SplitRangeOffFromNodeResult outdentResult = OutdentPartOfBlock(
|
|
*indentedParentElement, *firstContentToBeOutdented,
|
|
*lastContentToBeOutdented, indentedParentIndentedWith);
|
|
if (outdentResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::OutdentPartOfBlock() failed");
|
|
return outdentResult;
|
|
}
|
|
leftContentOfLastOutdented = outdentResult.GetLeftContent();
|
|
middleContentOfLastOutdented = outdentResult.GetMiddleContent();
|
|
rightContentOfLastOutdented = outdentResult.GetRightContent();
|
|
indentedParentElement = nullptr;
|
|
firstContentToBeOutdented = nullptr;
|
|
lastContentToBeOutdented = nullptr;
|
|
// curBlockIndentedWith = HTMLEditor::BlockIndentedWith::HTML;
|
|
|
|
// Then, we need to look for next indentedParentElement.
|
|
}
|
|
|
|
indentedParentIndentedWith = BlockIndentedWith::HTML;
|
|
RefPtr<Element> editingHost = GetActiveEditingHost();
|
|
for (nsCOMPtr<nsIContent> parentContent = content->GetParent();
|
|
parentContent && !parentContent->IsHTMLElement(nsGkAtoms::body) &&
|
|
parentContent != editingHost &&
|
|
(parentContent->IsHTMLElement(nsGkAtoms::table) ||
|
|
!HTMLEditUtils::IsTableElement(parentContent));
|
|
parentContent = parentContent->GetParent()) {
|
|
// If we reach a `<blockquote>` ancestor, it should be split at next
|
|
// time at least for outdenting current node.
|
|
if (parentContent->IsHTMLElement(nsGkAtoms::blockquote)) {
|
|
indentedParentElement = parentContent->AsElement();
|
|
firstContentToBeOutdented = content;
|
|
lastContentToBeOutdented = content;
|
|
break;
|
|
}
|
|
|
|
if (!useCSS) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> grandParentNode = parentContent->GetParentNode();
|
|
nsStaticAtom& marginProperty =
|
|
MarginPropertyAtomForIndent(MOZ_KnownLive(content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_WARN_IF(grandParentNode != parentContent->GetParentNode())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
nsAutoString value;
|
|
DebugOnly<nsresult> rvIgnored = CSSEditUtils::GetSpecifiedProperty(
|
|
*parentContent, marginProperty, value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetSpecifiedProperty() failed, but ignored");
|
|
// XXX Now, editing host may become different element. If so, shouldn't
|
|
// we stop this handling?
|
|
float startMargin;
|
|
RefPtr<nsAtom> unit;
|
|
CSSEditUtils::ParseLength(value, &startMargin, getter_AddRefs(unit));
|
|
// If we reach a block element which indents its children with start
|
|
// margin, we should remove it at next time.
|
|
if (startMargin > 0 &&
|
|
!(HTMLEditUtils::IsList(atContent.GetContainer()) &&
|
|
HTMLEditUtils::IsList(content))) {
|
|
indentedParentElement = parentContent->AsElement();
|
|
firstContentToBeOutdented = content;
|
|
lastContentToBeOutdented = content;
|
|
indentedParentIndentedWith = BlockIndentedWith::CSS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (indentedParentElement) {
|
|
continue;
|
|
}
|
|
|
|
// If we don't have any block elements which indents current node and
|
|
// both current node and its parent are list element, remove current
|
|
// node to move all its children to the parent list.
|
|
// XXX This is buggy. When both lists' item types are different,
|
|
// we create invalid tree. E.g., `<ul>` may have `<dd>` as its
|
|
// list item element.
|
|
if (HTMLEditUtils::IsList(atContent.GetContainer())) {
|
|
// Move node out of list
|
|
if (HTMLEditUtils::IsList(content)) {
|
|
// Just unwrap this sublist
|
|
nsresult rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// If current content is a list element but its parent is not a list
|
|
// element, move children to where it is and remove it from the tree.
|
|
if (HTMLEditUtils::IsList(content)) {
|
|
// XXX If mutation event listener appends new children forever, this
|
|
// becomes an infinite loop so that we should set limitation from
|
|
// first child count.
|
|
for (nsCOMPtr<nsIContent> lastChildContent = content->GetLastChild();
|
|
lastChildContent; lastChildContent = content->GetLastChild()) {
|
|
if (HTMLEditUtils::IsListItem(lastChildContent)) {
|
|
nsresult rv = LiftUpListItemElement(
|
|
MOZ_KnownLive(*lastChildContent->AsElement()),
|
|
LiftUpFromAllParentListElements::No);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::LiftUpListItemElement("
|
|
"LiftUpFromAllParentListElements::No) failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(lastChildContent)) {
|
|
// We have an embedded list, so move it out from under the parent
|
|
// list. Be sure to put it after the parent list because this
|
|
// loop iterates backwards through the parent's list of children.
|
|
EditorDOMPoint afterCurrentList(EditorDOMPoint::After(atContent));
|
|
NS_WARNING_ASSERTION(
|
|
afterCurrentList.IsSet(),
|
|
"Failed to set it to after current list element");
|
|
nsresult rv =
|
|
MoveNodeWithTransaction(*lastChildContent, afterCurrentList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Delete any non-list items for now
|
|
// XXX Chrome moves it from the list element. We should follow it.
|
|
nsresult rv = DeleteNodeWithTransaction(*lastChildContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
}
|
|
// Delete the now-empty list
|
|
nsresult rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (useCSS) {
|
|
if (RefPtr<Element> element = content->GetAsElementOrParentElement()) {
|
|
nsresult rv = ChangeMarginStart(*element, ChangeMargin::Decrease);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::ChangeMarginStart(ChangeMargin::"
|
|
"Decrease) failed, but ignored");
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!indentedParentElement) {
|
|
return SplitRangeOffFromNodeResult(leftContentOfLastOutdented,
|
|
middleContentOfLastOutdented,
|
|
rightContentOfLastOutdented);
|
|
}
|
|
|
|
// We have a <blockquote> we haven't finished handling.
|
|
SplitRangeOffFromNodeResult outdentResult =
|
|
OutdentPartOfBlock(*indentedParentElement, *firstContentToBeOutdented,
|
|
*lastContentToBeOutdented, indentedParentIndentedWith);
|
|
NS_WARNING_ASSERTION(outdentResult.Succeeded(),
|
|
"HTMLEditor::OutdentPartOfBlock() failed");
|
|
return outdentResult;
|
|
}
|
|
|
|
SplitRangeOffFromNodeResult
|
|
HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
Element& aBlockElement, nsIContent& aStartOfRange,
|
|
nsIContent& aEndOfRange) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
SplitRangeOffFromNodeResult splitResult =
|
|
SplitRangeOffFromBlock(aBlockElement, aStartOfRange, aEndOfRange);
|
|
if (NS_WARN_IF(splitResult.Rv() == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return splitResult;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
splitResult.Succeeded(),
|
|
"HTMLEditor::SplitRangeOffFromBlock() failed, but might be ignored");
|
|
nsresult rv = RemoveBlockContainerWithTransaction(aBlockElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
return SplitRangeOffFromNodeResult(splitResult.GetLeftContent(), nullptr,
|
|
splitResult.GetRightContent());
|
|
}
|
|
|
|
SplitRangeOffFromNodeResult HTMLEditor::SplitRangeOffFromBlock(
|
|
Element& aBlockElement, nsIContent& aStartOfMiddleElement,
|
|
nsIContent& aEndOfMiddleElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// aStartOfMiddleElement and aEndOfMiddleElement must be exclusive
|
|
// descendants of aBlockElement.
|
|
MOZ_ASSERT(EditorUtils::IsDescendantOf(aStartOfMiddleElement, aBlockElement));
|
|
MOZ_ASSERT(EditorUtils::IsDescendantOf(aEndOfMiddleElement, aBlockElement));
|
|
|
|
// Split at the start.
|
|
SplitNodeResult splitAtStartResult = SplitNodeDeepWithTransaction(
|
|
aBlockElement, EditorDOMPoint(&aStartOfMiddleElement),
|
|
SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(splitAtStartResult.Succeeded(),
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
|
|
// Split at after the end
|
|
EditorDOMPoint atAfterEnd(&aEndOfMiddleElement);
|
|
DebugOnly<bool> advanced = atAfterEnd.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced, "Failed to advance offset after the end node");
|
|
SplitNodeResult splitAtEndResult = SplitNodeDeepWithTransaction(
|
|
aBlockElement, atAfterEnd, SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(splitAtEndResult.Succeeded(),
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
|
|
return SplitRangeOffFromNodeResult(splitAtStartResult, splitAtEndResult);
|
|
}
|
|
|
|
SplitRangeOffFromNodeResult HTMLEditor::OutdentPartOfBlock(
|
|
Element& aBlockElement, nsIContent& aStartOfOutdent,
|
|
nsIContent& aEndOfOutdent, BlockIndentedWith aBlockIndentedWith) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
SplitRangeOffFromNodeResult splitResult =
|
|
SplitRangeOffFromBlock(aBlockElement, aStartOfOutdent, aEndOfOutdent);
|
|
if (NS_WARN_IF(splitResult.EditorDestroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
|
|
if (!splitResult.GetMiddleContentAsElement()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlock() didn't return middle content");
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
splitResult.Succeeded(),
|
|
"HTMLEditor::SplitRangeOffFromBlock() failed, but might be ignored");
|
|
|
|
if (aBlockIndentedWith == BlockIndentedWith::HTML) {
|
|
nsresult rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*splitResult.GetMiddleContentAsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitRangeOffFromNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
return SplitRangeOffFromNodeResult(splitResult.GetLeftContent(), nullptr,
|
|
splitResult.GetRightContent());
|
|
}
|
|
|
|
if (splitResult.GetMiddleContentAsElement()) {
|
|
nsresult rv = ChangeMarginStart(
|
|
MOZ_KnownLive(*splitResult.GetMiddleContentAsElement()),
|
|
ChangeMargin::Decrease);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::ChangeMarginStart(ChangeMargin::Decrease) failed");
|
|
return SplitRangeOffFromNodeResult(rv);
|
|
}
|
|
return splitResult;
|
|
}
|
|
|
|
return splitResult;
|
|
}
|
|
|
|
CreateElementResult HTMLEditor::ChangeListElementType(Element& aListElement,
|
|
nsAtom& aNewListTag,
|
|
nsAtom& aNewListItemTag) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
for (nsIContent* childContent = aListElement.GetFirstChild(); childContent;
|
|
childContent = childContent->GetNextSibling()) {
|
|
if (!childContent->IsElement()) {
|
|
continue;
|
|
}
|
|
if (HTMLEditUtils::IsListItem(childContent->AsElement()) &&
|
|
!childContent->IsHTMLElement(&aNewListItemTag)) {
|
|
OwningNonNull<Element> listItemElement = *childContent->AsElement();
|
|
RefPtr<Element> newListItemElement =
|
|
ReplaceContainerWithTransaction(listItemElement, aNewListItemTag);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return CreateElementResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!newListItemElement) {
|
|
NS_WARNING("EditorBase::ReplaceContainerWithTransaction() failed");
|
|
return CreateElementResult(NS_ERROR_FAILURE);
|
|
}
|
|
childContent = newListItemElement;
|
|
continue;
|
|
}
|
|
if (HTMLEditUtils::IsList(childContent->AsElement()) &&
|
|
!childContent->IsHTMLElement(&aNewListTag)) {
|
|
// XXX List elements shouldn't have other list elements as their
|
|
// child. Why do we handle such invalid tree?
|
|
// -> Maybe, for bug 525888.
|
|
OwningNonNull<Element> listElement = *childContent->AsElement();
|
|
CreateElementResult convertListTypeResult =
|
|
ChangeListElementType(listElement, aNewListTag, aNewListItemTag);
|
|
if (convertListTypeResult.Failed()) {
|
|
NS_WARNING("HTMLEditor::ChangeListElementType() failed");
|
|
return convertListTypeResult;
|
|
}
|
|
childContent = convertListTypeResult.GetNewNode();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (aListElement.IsHTMLElement(&aNewListTag)) {
|
|
return CreateElementResult(&aListElement);
|
|
}
|
|
|
|
RefPtr<Element> listElement =
|
|
ReplaceContainerWithTransaction(aListElement, aNewListTag);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return CreateElementResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(listElement,
|
|
"EditorBase::ReplaceContainerWithTransaction() failed");
|
|
return CreateElementResult(std::move(listElement));
|
|
}
|
|
|
|
nsresult HTMLEditor::CreateStyleForInsertText(AbstractRange& aAbstractRange) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aAbstractRange.IsPositioned());
|
|
MOZ_ASSERT(mTypeInState);
|
|
|
|
RefPtr<Element> documentRootElement = GetDocument()->GetRootElement();
|
|
if (NS_WARN_IF(!documentRootElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// process clearing any styles first
|
|
UniquePtr<PropItem> item = mTypeInState->TakeClearProperty();
|
|
|
|
EditorDOMPoint pointToPutCaret(aAbstractRange.StartRef());
|
|
bool putCaret = false;
|
|
{
|
|
// Transactions may set selection, but we will set selection if necessary.
|
|
AutoTransactionsConserveSelection dontChangeMySelection(*this);
|
|
|
|
while (item && pointToPutCaret.GetContainer() != documentRootElement) {
|
|
EditResult result = ClearStyleAt(
|
|
pointToPutCaret, MOZ_KnownLive(item->tag), MOZ_KnownLive(item->attr));
|
|
if (result.Failed()) {
|
|
NS_WARNING("HTMLEditor::ClearStyleAt() failed");
|
|
return result.Rv();
|
|
}
|
|
pointToPutCaret = result.PointRefToCollapseSelection();
|
|
item = mTypeInState->TakeClearProperty();
|
|
putCaret = true;
|
|
}
|
|
}
|
|
|
|
// then process setting any styles
|
|
int32_t relFontSize = mTypeInState->TakeRelativeFontSize();
|
|
item = mTypeInState->TakeSetProperty();
|
|
|
|
if (item || relFontSize) {
|
|
// we have at least one style to add; make a new text node to insert style
|
|
// nodes above.
|
|
if (pointToPutCaret.IsInTextNode()) {
|
|
// if we are in a text node, split it
|
|
SplitNodeResult splitTextNodeResult = SplitNodeDeepWithTransaction(
|
|
MOZ_KnownLive(*pointToPutCaret.GetContainerAsText()), pointToPutCaret,
|
|
SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitTextNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eAllowToCreateEmptyContainer) failed");
|
|
return splitTextNodeResult.Rv();
|
|
}
|
|
pointToPutCaret = splitTextNodeResult.SplitPoint();
|
|
}
|
|
if (!pointToPutCaret.IsInContentNode() ||
|
|
!HTMLEditUtils::IsContainerNode(
|
|
*pointToPutCaret.ContainerAsContent())) {
|
|
return NS_OK;
|
|
}
|
|
RefPtr<Text> newEmptyTextNode = CreateTextNode(EmptyString());
|
|
if (!newEmptyTextNode) {
|
|
NS_WARNING("EditorBase::CreateTextNode() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = InsertNodeWithTransaction(*newEmptyTextNode, pointToPutCaret);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::InsertNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
pointToPutCaret.Set(newEmptyTextNode, 0);
|
|
putCaret = true;
|
|
|
|
if (relFontSize) {
|
|
// dir indicated bigger versus smaller. 1 = bigger, -1 = smaller
|
|
HTMLEditor::FontSize dir = relFontSize > 0 ? HTMLEditor::FontSize::incr
|
|
: HTMLEditor::FontSize::decr;
|
|
for (int32_t j = 0; j < DeprecatedAbs(relFontSize); j++) {
|
|
nsresult rv =
|
|
RelativeFontChangeOnTextNode(dir, *newEmptyTextNode, 0, -1);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RelativeFontChangeOnTextNode() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
while (item) {
|
|
nsresult rv = SetInlinePropertyOnNode(
|
|
MOZ_KnownLive(*pointToPutCaret.GetContainerAsContent()),
|
|
MOZ_KnownLive(*item->tag), MOZ_KnownLive(item->attr), item->value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::SetInlinePropertyOnNode() failed");
|
|
return rv;
|
|
}
|
|
item = mTypeInState->TakeSetProperty();
|
|
}
|
|
}
|
|
|
|
if (!putCaret) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = CollapseSelectionTo(pointToPutCaret);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
bool HTMLEditor::IsEmptyBlockElement(Element& aElement,
|
|
IgnoreSingleBR aIgnoreSingleBR) const {
|
|
if (!HTMLEditUtils::IsBlockElement(aElement)) {
|
|
return false;
|
|
}
|
|
return IsEmptyNode(aElement, aIgnoreSingleBR == IgnoreSingleBR::Yes);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::AlignAsSubAction(const nsAString& aAlignType) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eSetOrClearAlignment, nsIEditor::eNext,
|
|
ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Some selection containers are not content node, but ignored");
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed the selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
|
|
// AlignContentsAtSelection() creates AutoSelectionRestorer. Therefore,
|
|
// we need to check whether we've been destroyed or not even if it returns
|
|
// NS_OK.
|
|
rv = AlignContentsAtSelection(aAlignType);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::AlignContentsAtSelection() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed the selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
rv = MaybeInsertPaddingBRElementForEmptyLastLineAtSelection();
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::MaybeInsertPaddingBRElementForEmptyLastLineAtSelection() "
|
|
"failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
nsresult HTMLEditor::AlignContentsAtSelection(const nsAString& aAlignType) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
// Convert the selection ranges into "promoted" selection ranges: This
|
|
// basically just expands the range to include the immediate block parent,
|
|
// and then further expands to include any ancestors whose children are all
|
|
// in the range
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges(
|
|
arrayOfContents, EditSubAction::eSetOrClearAlignment,
|
|
CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"SplitInlinesAndCollectEditTargetNodesInExtendedSelectionRanges("
|
|
"eSetOrClearAlignment, CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
// If we don't have any nodes, or we have only a single br, then we are
|
|
// creating an empty alignment div. We have to do some different things for
|
|
// these.
|
|
bool createEmptyDivElement = arrayOfContents.IsEmpty();
|
|
if (arrayOfContents.Length() == 1) {
|
|
OwningNonNull<nsIContent>& content = arrayOfContents[0];
|
|
|
|
if (HTMLEditUtils::SupportsAlignAttr(content)) {
|
|
// The node is a table element, an hr, a paragraph, a div or a section
|
|
// header; in HTML 4, it can directly carry the ALIGN attribute and we
|
|
// don't need to make a div! If we are in CSS mode, all the work is done
|
|
// in SetBlockElementAlign().
|
|
nsresult rv =
|
|
SetBlockElementAlign(MOZ_KnownLive(*content->AsElement()), aAlignType,
|
|
EditTarget::OnlyDescendantsExceptTable);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SetBlockElementAlign() failed");
|
|
return rv;
|
|
}
|
|
|
|
if (content->IsHTMLElement(nsGkAtoms::br)) {
|
|
// The special case createEmptyDivElement code (below) that consumes
|
|
// `<br>` elements can cause tables to split if the start node of the
|
|
// selection is not in a table cell or caption, for example parent is a
|
|
// `<tr>`. Avoid this unnecessary splitting if possible by leaving
|
|
// createEmptyDivElement false so that we fall through to the normal case
|
|
// alignment code.
|
|
//
|
|
// XXX: It seems a little error prone for the createEmptyDivElement
|
|
// special case code to assume that the start node of the selection
|
|
// is the parent of the single node in the arrayOfContents, as the
|
|
// paragraph above points out. Do we rely on the selection start
|
|
// node because of the fact that arrayOfContents can be empty? We
|
|
// should probably revisit this issue. - kin
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
const RangeBoundary& atStartOfSelection = firstRange->StartRef();
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsINode* parent = atStartOfSelection.Container();
|
|
createEmptyDivElement = !HTMLEditUtils::IsTableElement(parent) ||
|
|
HTMLEditUtils::IsTableCellOrCaption(*parent);
|
|
}
|
|
}
|
|
|
|
if (createEmptyDivElement) {
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutaiton event listener might have changed the selection");
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
EditActionResult result =
|
|
AlignContentsAtSelectionWithEmptyDivElement(aAlignType);
|
|
NS_WARNING_ASSERTION(
|
|
result.Succeeded(),
|
|
"HTMLEditor::AlignContentsAtSelectionWithEmptyDivElement() failed");
|
|
if (result.Handled()) {
|
|
restoreSelectionLater.Abort();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
rv = AlignNodesAndDescendants(arrayOfContents, aAlignType);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::AlignNodesAndDescendants() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::AlignContentsAtSelectionWithEmptyDivElement(
|
|
const nsAString& aAlignType) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
SplitNodeResult splitNodeResult = MaybeSplitAncestorsForInsertWithTransaction(
|
|
*nsGkAtoms::div, atStartOfSelection);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms::"
|
|
"div) failed");
|
|
return EditActionResult(splitNodeResult.Rv());
|
|
}
|
|
|
|
EditorDOMPoint pointToInsertDiv(splitNodeResult.SplitPoint());
|
|
|
|
// Consume a trailing br, if any. This is to keep an alignment from
|
|
// creating extra lines, if possible.
|
|
if (nsCOMPtr<nsIContent> maybeBRContent =
|
|
GetNextEditableHTMLNodeInBlock(splitNodeResult.SplitPoint())) {
|
|
if (maybeBRContent->IsHTMLElement(nsGkAtoms::br) &&
|
|
pointToInsertDiv.GetChild()) {
|
|
// Making use of html structure... if next node after where we are
|
|
// putting our div is not a block, then the br we found is in same block
|
|
// we are, so it's safe to consume it.
|
|
if (nsIContent* nextEditableSibling =
|
|
GetNextHTMLSibling(pointToInsertDiv.GetChild())) {
|
|
if (!HTMLEditUtils::IsBlockElement(*nextEditableSibling)) {
|
|
AutoEditorDOMPointChildInvalidator lockOffset(pointToInsertDiv);
|
|
nsresult rv = DeleteNodeWithTransaction(*maybeBRContent);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> divElement =
|
|
CreateNodeWithTransaction(*nsGkAtoms::div, pointToInsertDiv);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!divElement) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = divElement;
|
|
// Set up the alignment on the div, using HTML or CSS
|
|
nsresult rv = SetBlockElementAlign(*divElement, aAlignType,
|
|
EditTarget::OnlyDescendantsExceptTable);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SetBlockElementAlign(EditTarget::"
|
|
"OnlyDescendantsExceptTable) failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
// Put in a padding <br> element for empty last line so that it won't get
|
|
// deleted.
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(
|
|
EditorDOMPoint(divElement, 0));
|
|
if (createPaddingBRResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction() "
|
|
"failed");
|
|
return EditActionResult(createPaddingBRResult.Rv());
|
|
}
|
|
rv = CollapseSelectionToStartOf(*divElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
nsresult HTMLEditor::AlignNodesAndDescendants(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents,
|
|
const nsAString& aAlignType) {
|
|
// Detect all the transitions in the array, where a transition means that
|
|
// adjacent nodes in the array don't have the same parent.
|
|
AutoTArray<bool, 64> transitionList;
|
|
HTMLEditor::MakeTransitionList(aArrayOfContents, transitionList);
|
|
|
|
// Okay, now go through all the nodes and give them an align attrib or put
|
|
// them in a div, or whatever is appropriate. Woohoo!
|
|
|
|
RefPtr<Element> createdDivElement;
|
|
bool useCSS = IsCSSEnabled();
|
|
int32_t indexOfTransitionList = -1;
|
|
for (OwningNonNull<nsIContent>& content : aArrayOfContents) {
|
|
++indexOfTransitionList;
|
|
|
|
// Ignore all non-editable nodes. Leave them be.
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
|
|
// The node is a table element, an hr, a paragraph, a div or a section
|
|
// header; in HTML 4, it can directly carry the ALIGN attribute and we
|
|
// don't need to nest it, just set the alignment. In CSS, assign the
|
|
// corresponding CSS styles in SetBlockElementAlign().
|
|
if (HTMLEditUtils::SupportsAlignAttr(content)) {
|
|
nsresult rv =
|
|
SetBlockElementAlign(MOZ_KnownLive(*content->AsElement()), aAlignType,
|
|
EditTarget::NodeAndDescendantsExceptTable);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SetBlockElementAlign(EditTarget::"
|
|
"NodeAndDescendantsExceptTable) failed");
|
|
return rv;
|
|
}
|
|
// Clear out createdDivElement so that we don't put nodes after this one
|
|
// into it
|
|
createdDivElement = nullptr;
|
|
continue;
|
|
}
|
|
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
continue;
|
|
}
|
|
|
|
// Skip insignificant formatting text nodes to prevent unnecessary
|
|
// structure splitting!
|
|
if (content->IsText() &&
|
|
((HTMLEditUtils::IsTableElement(atContent.GetContainer()) &&
|
|
!HTMLEditUtils::IsTableCellOrCaption(*atContent.GetContainer())) ||
|
|
HTMLEditUtils::IsList(atContent.GetContainer()) ||
|
|
IsEmptyNode(*content))) {
|
|
continue;
|
|
}
|
|
|
|
// If it's a list item, or a list inside a list, forget any "current" div,
|
|
// and instead put divs inside the appropriate block (td, li, etc.)
|
|
if (HTMLEditUtils::IsListItem(content) || HTMLEditUtils::IsList(content)) {
|
|
Element* listOrListItemElement = content->AsElement();
|
|
AutoEditorDOMPointOffsetInvalidator lockChild(atContent);
|
|
nsresult rv = RemoveAlignFromDescendants(
|
|
MOZ_KnownLive(*listOrListItemElement), aAlignType,
|
|
EditTarget::OnlyDescendantsExceptTable);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::RemoveAlignFromDescendants(EditTarget::"
|
|
"OnlyDescendantsExceptTable) failed");
|
|
return rv;
|
|
}
|
|
|
|
if (useCSS) {
|
|
mCSSEditUtils->SetCSSEquivalentToHTMLStyle(
|
|
MOZ_KnownLive(listOrListItemElement), nullptr, nsGkAtoms::align,
|
|
&aAlignType, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
createdDivElement = nullptr;
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(atContent.GetContainer())) {
|
|
// If we don't use CSS, add a content to list element: they have to
|
|
// be inside another list, i.e., >= second level of nesting.
|
|
// XXX AlignContentsInAllTableCellsAndListItems() handles only list
|
|
// item elements and table cells. Is it intentional? Why don't
|
|
// we need to align contents in other type blocks?
|
|
nsresult rv = AlignContentsInAllTableCellsAndListItems(
|
|
MOZ_KnownLive(*listOrListItemElement), aAlignType);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::AlignContentsInAllTableCellsAndListItems() failed");
|
|
return rv;
|
|
}
|
|
createdDivElement = nullptr;
|
|
continue;
|
|
}
|
|
|
|
// Clear out createdDivElement so that we don't put nodes after this one
|
|
// into it
|
|
}
|
|
|
|
// Need to make a div to put things in if we haven't already, or if this
|
|
// node doesn't go in div we used earlier.
|
|
if (!createdDivElement || transitionList[indexOfTransitionList]) {
|
|
// First, check that our element can contain a div.
|
|
if (!HTMLEditUtils::CanNodeContain(*atContent.GetContainer(),
|
|
*nsGkAtoms::div)) {
|
|
// XXX Why do we return NS_OK here rather than returning error or
|
|
// doing continue?
|
|
return NS_OK;
|
|
}
|
|
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::div,
|
|
atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms:"
|
|
":div) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
createdDivElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!createdDivElement) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = createdDivElement;
|
|
// Set up the alignment on the div
|
|
nsresult rv =
|
|
SetBlockElementAlign(*createdDivElement, aAlignType,
|
|
EditTarget::OnlyDescendantsExceptTable);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SetBlockElementAlign(EditTarget::"
|
|
"OnlyDescendantsExceptTable) failed, but ignored");
|
|
}
|
|
|
|
// Tuck the node into the end of the active div
|
|
//
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to keep it alive.
|
|
nsresult rv = MoveNodeToEndWithTransaction(MOZ_KnownLive(content),
|
|
*createdDivElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::AlignContentsInAllTableCellsAndListItems(
|
|
Element& aElement, const nsAString& aAlignType) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// Gather list of table cells or list items
|
|
AutoTArray<OwningNonNull<Element>, 64> arrayOfTableCellsAndListItems;
|
|
DOMIterator iter(aElement);
|
|
iter.AppendNodesToArray(
|
|
+[](nsINode& aNode, void*) -> bool {
|
|
MOZ_ASSERT(Element::FromNode(&aNode));
|
|
return HTMLEditUtils::IsTableCell(&aNode) ||
|
|
HTMLEditUtils::IsListItem(&aNode);
|
|
},
|
|
arrayOfTableCellsAndListItems);
|
|
|
|
// Now that we have the list, align their contents as requested
|
|
for (auto& tableCellOrListItemElement : arrayOfTableCellsAndListItems) {
|
|
// MOZ_KnownLive because 'arrayOfTableCellsAndListItems' is guaranteed to
|
|
// keep it alive.
|
|
nsresult rv = AlignBlockContentsWithDivElement(
|
|
MOZ_KnownLive(tableCellOrListItemElement), aAlignType);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::AlignBlockContentsWithDivElement() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::AlignBlockContentsWithDivElement(
|
|
Element& aBlockElement, const nsAString& aAlignType) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// XXX I don't understand why we should NOT align non-editable children
|
|
// with modifying EDITABLE `<div>` element.
|
|
nsCOMPtr<nsIContent> firstEditableContent =
|
|
GetFirstEditableChild(aBlockElement);
|
|
if (!firstEditableContent) {
|
|
// This block has no editable content, nothing to align.
|
|
return NS_OK;
|
|
}
|
|
|
|
// If there is only one editable content and it's a `<div>` element,
|
|
// just set `align` attribute of it.
|
|
nsCOMPtr<nsIContent> lastEditableContent =
|
|
GetLastEditableChild(aBlockElement);
|
|
if (firstEditableContent == lastEditableContent &&
|
|
firstEditableContent->IsHTMLElement(nsGkAtoms::div)) {
|
|
nsresult rv = SetAttributeOrEquivalent(
|
|
MOZ_KnownLive(firstEditableContent->AsElement()), nsGkAtoms::align,
|
|
aAlignType, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"EditorBase::SetAttributeOrEquivalent(nsGkAtoms::align) failed");
|
|
return rv;
|
|
}
|
|
|
|
// Otherwise, we need to insert a `<div>` element to set `align` attribute.
|
|
// XXX Don't insert the new `<div>` element until we set `align` attribute
|
|
// for avoiding running mutation event listeners.
|
|
RefPtr<Element> divElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, EditorDOMPoint(&aBlockElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!divElement) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv =
|
|
SetAttributeOrEquivalent(divElement, nsGkAtoms::align, aAlignType, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::SetAttributeOrEquivalent(nsGkAtoms::align) failed");
|
|
return rv;
|
|
}
|
|
// XXX This is tricky and does not work with mutation event listeners.
|
|
// But I'm not sure what we should do if new content is inserted.
|
|
// Anyway, I don't think that we should move editable contents
|
|
// over non-editable contents. Chrome does no do that.
|
|
while (lastEditableContent && (lastEditableContent != divElement)) {
|
|
nsresult rv = MoveNodeWithTransaction(*lastEditableContent,
|
|
EditorDOMPoint(divElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
lastEditableContent = GetLastEditableChild(aBlockElement);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::MaybeDeleteTopMostEmptyAncestor(
|
|
nsIContent& aStartContent, Element& aEditingHostElement,
|
|
nsIEditor::EDirection aDirectionAndAmount) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// If the editing host is an inline element, bail out early.
|
|
if (HTMLEditUtils::IsInlineElement(aEditingHostElement)) {
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
// If we are inside an empty block, delete it. Note: do NOT delete table
|
|
// elements this way.
|
|
RefPtr<Element> blockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(aStartContent);
|
|
RefPtr<Element> topMostEmptyBlockElement;
|
|
while (blockElement && blockElement != &aEditingHostElement &&
|
|
!HTMLEditUtils::IsTableElement(blockElement) &&
|
|
IsEmptyNode(*blockElement, true, false)) {
|
|
topMostEmptyBlockElement = blockElement;
|
|
blockElement =
|
|
HTMLEditUtils::GetAncestorBlockElement(*topMostEmptyBlockElement);
|
|
}
|
|
|
|
// XXX Because of not checking whether found block element is editable
|
|
// in the above loop, empty ediable block element may be overwritten
|
|
// with empty non-editable clock element. Therefore, we fail to
|
|
// remove the found empty nodes.
|
|
if (!topMostEmptyBlockElement || !topMostEmptyBlockElement->IsEditable()) {
|
|
return EditActionIgnored();
|
|
}
|
|
|
|
RefPtr<Element> parentOfEmptyBlockElement =
|
|
topMostEmptyBlockElement->GetParentElement();
|
|
if (NS_WARN_IF(!parentOfEmptyBlockElement)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (HTMLEditUtils::IsListItem(topMostEmptyBlockElement)) {
|
|
// If the found empty block is a list item element and its grand parent
|
|
// (i.e., parent of list element) is NOT a list element, insert <br>
|
|
// element before the list element which has the empty list item.
|
|
// This odd list structure may occur if `Document.execCommand("indent")`
|
|
// is performed for list items.
|
|
// XXX Chrome does not remove empty list elements when last content in
|
|
// last list item is deleted. We should follow it since current
|
|
// behavior is annoying when you type new list item with selecting
|
|
// all list items.
|
|
if (IsFirstEditableChild(topMostEmptyBlockElement)) {
|
|
EditorDOMPoint atParentOfEmptyBlock(parentOfEmptyBlockElement);
|
|
if (NS_WARN_IF(!atParentOfEmptyBlock.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
// If the grand parent IS a list element, we'll adjust Selection in
|
|
// AfterEdit().
|
|
if (!HTMLEditUtils::IsList(atParentOfEmptyBlock.GetContainer())) {
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(atParentOfEmptyBlock);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(brElement));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
switch (aDirectionAndAmount) {
|
|
case nsIEditor::eNext:
|
|
case nsIEditor::eNextWord:
|
|
case nsIEditor::eToEndOfLine: {
|
|
// Collapse Selection to next node of after empty block element
|
|
// if there is. Otherwise, to just after the empty block.
|
|
EditorRawDOMPoint afterEmptyBlock(topMostEmptyBlockElement);
|
|
bool advancedFromEmptyBlock = afterEmptyBlock.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(
|
|
advancedFromEmptyBlock,
|
|
"Failed to set selection to the after the empty block");
|
|
nsCOMPtr<nsIContent> nextContentOfEmptyBlock =
|
|
GetNextNode(afterEmptyBlock);
|
|
if (nextContentOfEmptyBlock) {
|
|
EditorDOMPoint pt = GetGoodCaretPointFor(*nextContentOfEmptyBlock,
|
|
aDirectionAndAmount);
|
|
NS_WARNING_ASSERTION(
|
|
pt.IsSet(),
|
|
"HTMLEditor::GetGoodCaretPointFor() failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(pt);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
break;
|
|
}
|
|
if (NS_WARN_IF(!advancedFromEmptyBlock)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
nsresult rv = CollapseSelectionTo(afterEmptyBlock);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
break;
|
|
}
|
|
case nsIEditor::ePrevious:
|
|
case nsIEditor::ePreviousWord:
|
|
case nsIEditor::eToBeginningOfLine: {
|
|
// Collapse Selection to previous editable node of the empty block
|
|
// if there is. Otherwise, to after the empty block.
|
|
EditorRawDOMPoint atEmptyBlock(topMostEmptyBlockElement);
|
|
nsCOMPtr<nsIContent> previousContentOfEmptyBlock =
|
|
GetPreviousEditableNode(atEmptyBlock);
|
|
if (previousContentOfEmptyBlock) {
|
|
EditorDOMPoint pt = GetGoodCaretPointFor(*previousContentOfEmptyBlock,
|
|
aDirectionAndAmount);
|
|
NS_WARNING_ASSERTION(
|
|
pt.IsSet(),
|
|
"HTMLEditor::GetGoodCaretPointFor() failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(pt);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
break;
|
|
}
|
|
EditorRawDOMPoint afterEmptyBlock(
|
|
EditorRawDOMPoint::After(*topMostEmptyBlockElement));
|
|
if (NS_WARN_IF(!afterEmptyBlock.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
nsresult rv = CollapseSelectionTo(afterEmptyBlock);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
break;
|
|
}
|
|
case nsIEditor::eNone:
|
|
break;
|
|
default:
|
|
MOZ_CRASH("CheckForEmptyBlock doesn't support this action yet");
|
|
}
|
|
}
|
|
nsresult rv = DeleteNodeWithTransaction(*topMostEmptyBlockElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return EditActionResult(rv);
|
|
}
|
|
return EditActionHandled();
|
|
}
|
|
|
|
template <typename PT, typename CT>
|
|
Element* HTMLEditor::GetInvisibleBRElementAt(
|
|
const EditorDOMPointBase<PT, CT>& aPoint) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aPoint.IsSet());
|
|
|
|
if (aPoint.IsStartOfContainer()) {
|
|
return nullptr;
|
|
}
|
|
|
|
WSRunScanner wsScannerForPoint(this, aPoint);
|
|
return wsScannerForPoint.StartsFromBRElement()
|
|
? wsScannerForPoint.StartReasonBRElementPtr()
|
|
: nullptr;
|
|
}
|
|
|
|
size_t HTMLEditor::CollectChildren(
|
|
nsINode& aNode, nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents,
|
|
size_t aIndexToInsertChildren, CollectListChildren aCollectListChildren,
|
|
CollectTableChildren aCollectTableChildren,
|
|
CollectNonEditableNodes aCollectNonEditableNodes) const {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
size_t numberOfFoundChildren = 0;
|
|
for (nsIContent* content = GetFirstEditableChild(aNode); content;
|
|
content = content->GetNextSibling()) {
|
|
if ((aCollectListChildren == CollectListChildren::Yes &&
|
|
(HTMLEditUtils::IsList(content) ||
|
|
HTMLEditUtils::IsListItem(content))) ||
|
|
(aCollectTableChildren == CollectTableChildren::Yes &&
|
|
HTMLEditUtils::IsTableElement(content))) {
|
|
numberOfFoundChildren += CollectChildren(
|
|
*content, aOutArrayOfContents,
|
|
aIndexToInsertChildren + numberOfFoundChildren, aCollectListChildren,
|
|
aCollectTableChildren, aCollectNonEditableNodes);
|
|
} else if (aCollectNonEditableNodes == CollectNonEditableNodes::Yes ||
|
|
EditorUtils::IsEditableContent(*content, EditorType::HTML)) {
|
|
aOutArrayOfContents.InsertElementAt(
|
|
aIndexToInsertChildren + numberOfFoundChildren++, *content);
|
|
}
|
|
}
|
|
return numberOfFoundChildren;
|
|
}
|
|
|
|
already_AddRefed<StaticRange>
|
|
HTMLEditor::GetExtendedRangeToIncludeInvisibleNodes(
|
|
const AbstractRange& aAbstractRange) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!aAbstractRange.Collapsed());
|
|
MOZ_ASSERT(aAbstractRange.IsPositioned());
|
|
|
|
EditorRawDOMPoint atStart(aAbstractRange.StartRef());
|
|
EditorRawDOMPoint atEnd(aAbstractRange.EndRef());
|
|
|
|
if (NS_WARN_IF(
|
|
!aAbstractRange.GetClosestCommonInclusiveAncestor()->IsContent())) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Find current selection common block parent
|
|
Element* commonAncestorBlock =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*aAbstractRange.GetClosestCommonInclusiveAncestor()->AsContent());
|
|
if (NS_WARN_IF(!commonAncestorBlock)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Set up for loops and cache our root element
|
|
Element* editingHost = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!editingHost)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Find previous visible things before start of selection
|
|
if (atStart.GetContainer() != commonAncestorBlock &&
|
|
atStart.GetContainer() != editingHost) {
|
|
for (;;) {
|
|
WSScanResult backwardScanFromStartResult =
|
|
WSRunScanner::ScanPreviousVisibleNodeOrBlockBoundary(*this, atStart);
|
|
if (!backwardScanFromStartResult.ReachedCurrentBlockBoundary()) {
|
|
break;
|
|
}
|
|
MOZ_ASSERT(backwardScanFromStartResult.GetContent() ==
|
|
WSRunScanner(this, atStart).GetStartReasonContent());
|
|
// We want to keep looking up. But stop if we are crossing table
|
|
// element boundaries, or if we hit the root.
|
|
if (HTMLEditUtils::IsTableElement(
|
|
backwardScanFromStartResult.GetContent()) ||
|
|
backwardScanFromStartResult.GetContent() == commonAncestorBlock ||
|
|
backwardScanFromStartResult.GetContent() == editingHost) {
|
|
break;
|
|
}
|
|
atStart = backwardScanFromStartResult.PointAtContent();
|
|
}
|
|
}
|
|
|
|
// Expand selection endpoint only if we don't pass an invisible `<br>`, or if
|
|
// we really needed to pass that `<br>` (i.e., its block is now totally
|
|
// selected).
|
|
|
|
// Find next visible things after end of selection
|
|
if (atEnd.GetContainer() != commonAncestorBlock &&
|
|
atEnd.GetContainer() != editingHost) {
|
|
EditorDOMPoint atFirstInvisibleBRElement;
|
|
for (;;) {
|
|
WSRunScanner wsScannerAtEnd(this, atEnd);
|
|
WSScanResult forwardScanFromEndResult =
|
|
wsScannerAtEnd.ScanNextVisibleNodeOrBlockBoundaryFrom(atEnd);
|
|
if (forwardScanFromEndResult.ReachedBRElement()) {
|
|
// XXX In my understanding, this is odd. The end reason may not be
|
|
// same as the reached <br> element because the equality is
|
|
// guaranteed only when ReachedCurrentBlockBoundary() returns true.
|
|
// However, looks like that this code assumes that
|
|
// GetEndReasonContent() returns the (or a) <br> element.
|
|
NS_ASSERTION(wsScannerAtEnd.GetEndReasonContent() ==
|
|
forwardScanFromEndResult.BRElementPtr(),
|
|
"End reason is not the reached <br> element");
|
|
if (IsVisibleBRElement(wsScannerAtEnd.GetEndReasonContent())) {
|
|
break;
|
|
}
|
|
if (!atFirstInvisibleBRElement.IsSet()) {
|
|
atFirstInvisibleBRElement = atEnd;
|
|
}
|
|
atEnd.SetAfter(wsScannerAtEnd.GetEndReasonContent());
|
|
continue;
|
|
}
|
|
|
|
if (forwardScanFromEndResult.ReachedCurrentBlockBoundary()) {
|
|
MOZ_ASSERT(forwardScanFromEndResult.GetContent() ==
|
|
wsScannerAtEnd.GetEndReasonContent());
|
|
// We want to keep looking up. But stop if we are crossing table
|
|
// element boundaries, or if we hit the root.
|
|
if (HTMLEditUtils::IsTableElement(
|
|
forwardScanFromEndResult.GetContent()) ||
|
|
forwardScanFromEndResult.GetContent() == commonAncestorBlock ||
|
|
forwardScanFromEndResult.GetContent() == editingHost) {
|
|
break;
|
|
}
|
|
atEnd = forwardScanFromEndResult.PointAfterContent();
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (atFirstInvisibleBRElement.IsInContentNode()) {
|
|
// Find block node containing invisible `<br>` element.
|
|
if (RefPtr<Element> brElementParent =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*atFirstInvisibleBRElement.ContainerAsContent())) {
|
|
// Create a range that represents extended selection.
|
|
RefPtr<StaticRange> staticRange =
|
|
StaticRange::Create(atStart.ToRawRangeBoundary(),
|
|
atEnd.ToRawRangeBoundary(), IgnoreErrors());
|
|
if (!staticRange) {
|
|
NS_WARNING("StaticRange::Create() failed");
|
|
return nullptr;
|
|
}
|
|
|
|
// Check if block is entirely inside range
|
|
bool nodeBefore = false, nodeAfter = false;
|
|
DebugOnly<nsresult> rvIgnored = RangeUtils::CompareNodeToRange(
|
|
brElementParent, staticRange, &nodeBefore, &nodeAfter);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"RangeUtils::CompareNodeToRange() failed");
|
|
// If block is contained in the range, include the invisible `<br>`.
|
|
if (!nodeBefore && !nodeAfter) {
|
|
return staticRange.forget();
|
|
}
|
|
// Otherwise, the new range should end at the invisible `<br>`.
|
|
atEnd = atFirstInvisibleBRElement;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX This is unnecessary creation cost for us since we just want to return
|
|
// the start point and the end point.
|
|
return StaticRange::Create(atStart.ToRawRangeBoundary(),
|
|
atEnd.ToRawRangeBoundary(), IgnoreErrors());
|
|
}
|
|
|
|
nsresult HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// This tweaks selections to be more "natural".
|
|
// Idea here is to adjust edges of selection ranges so that they do not cross
|
|
// breaks or block boundaries unless something editable beyond that boundary
|
|
// is also selected. This adjustment makes it much easier for the various
|
|
// block operations to determine what nodes to act on.
|
|
|
|
// We don't need to mess with cell selections, and we assume multirange
|
|
// selections are those.
|
|
// XXX Why? Even in <input>, user can select 2 or more ranges.
|
|
if (SelectionRefPtr()->RangeCount() != 1) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsRange> range = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!range)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(!range->IsPositioned())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const EditorDOMPoint startPoint(range->StartRef());
|
|
if (NS_WARN_IF(!startPoint.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
const EditorDOMPoint endPoint(range->EndRef());
|
|
if (NS_WARN_IF(!endPoint.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// adjusted values default to original values
|
|
EditorDOMPoint newStartPoint(startPoint);
|
|
EditorDOMPoint newEndPoint(endPoint);
|
|
|
|
// Is there any intervening visible whitespace? If so we can't push
|
|
// selection past that, it would visibly change meaning of users selection.
|
|
WSRunScanner wsScannerAtEnd(this, endPoint);
|
|
if (wsScannerAtEnd.ScanPreviousVisibleNodeOrBlockBoundaryFrom(endPoint)
|
|
.ReachedSomething()) {
|
|
// eThisBlock and eOtherBlock conveniently distinguish cases
|
|
// of going "down" into a block and "up" out of a block.
|
|
if (wsScannerAtEnd.StartsFromOtherBlockElement()) {
|
|
// endpoint is just after the close of a block.
|
|
nsINode* child = GetRightmostChild(
|
|
wsScannerAtEnd.StartReasonOtherBlockElementPtr(), true);
|
|
if (child) {
|
|
newEndPoint.SetAfter(child);
|
|
}
|
|
// else block is empty - we can leave selection alone here, i think.
|
|
} else if (wsScannerAtEnd.StartsFromCurrentBlockBoundary()) {
|
|
// endpoint is just after start of this block
|
|
nsINode* child = GetPreviousEditableHTMLNode(endPoint);
|
|
if (child) {
|
|
newEndPoint.SetAfter(child);
|
|
}
|
|
// else block is empty - we can leave selection alone here, i think.
|
|
} else if (wsScannerAtEnd.StartsFromBRElement()) {
|
|
// endpoint is just after break. lets adjust it to before it.
|
|
newEndPoint.Set(wsScannerAtEnd.StartReasonBRElementPtr());
|
|
}
|
|
}
|
|
|
|
// Is there any intervening visible whitespace? If so we can't push
|
|
// selection past that, it would visibly change meaning of users selection.
|
|
WSRunScanner wsScannerAtStart(this, startPoint);
|
|
if (wsScannerAtStart.ScanNextVisibleNodeOrBlockBoundaryFrom(startPoint)
|
|
.ReachedSomething()) {
|
|
// eThisBlock and eOtherBlock conveniently distinguish cases
|
|
// of going "down" into a block and "up" out of a block.
|
|
if (wsScannerAtStart.EndsByOtherBlockElement()) {
|
|
// startpoint is just before the start of a block.
|
|
nsINode* child = GetLeftmostChild(
|
|
wsScannerAtStart.EndReasonOtherBlockElementPtr(), true);
|
|
if (child) {
|
|
newStartPoint.Set(child);
|
|
}
|
|
// else block is empty - we can leave selection alone here, i think.
|
|
} else if (wsScannerAtStart.EndsByCurrentBlockBoundary()) {
|
|
// startpoint is just before end of this block
|
|
nsINode* child = GetNextEditableHTMLNode(startPoint);
|
|
if (child) {
|
|
newStartPoint.Set(child);
|
|
}
|
|
// else block is empty - we can leave selection alone here, i think.
|
|
} else if (wsScannerAtStart.EndsByBRElement()) {
|
|
// startpoint is just before a break. lets adjust it to after it.
|
|
newStartPoint.SetAfter(wsScannerAtStart.EndReasonBRElementPtr());
|
|
}
|
|
}
|
|
|
|
// There is a demented possibility we have to check for. We might have a very
|
|
// strange selection that is not collapsed and yet does not contain any
|
|
// editable content, and satisfies some of the above conditions that cause
|
|
// tweaking. In this case we don't want to tweak the selection into a block
|
|
// it was never in, etc. There are a variety of strategies one might use to
|
|
// try to detect these cases, but I think the most straightforward is to see
|
|
// if the adjusted locations "cross" the old values: i.e., new end before old
|
|
// start, or new start after old end. If so then just leave things alone.
|
|
|
|
Maybe<int32_t> comp = nsContentUtils::ComparePoints(
|
|
startPoint.ToRawRangeBoundary(), newEndPoint.ToRawRangeBoundary());
|
|
|
|
if (NS_WARN_IF(!comp)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (*comp == 1) {
|
|
return NS_OK; // New end before old start.
|
|
}
|
|
|
|
comp = nsContentUtils::ComparePoints(newStartPoint.ToRawRangeBoundary(),
|
|
endPoint.ToRawRangeBoundary());
|
|
|
|
if (NS_WARN_IF(!comp)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (*comp == 1) {
|
|
return NS_OK; // New start after old end.
|
|
}
|
|
|
|
// Otherwise set selection to new values. Note that end point may be prior
|
|
// to start point. So, we cannot use Selection::SetStartAndEndInLimit() here.
|
|
ErrorResult error;
|
|
MOZ_KnownLive(SelectionRefPtr())
|
|
->SetBaseAndExtentInLimiter(newStartPoint, newEndPoint, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
} else if (error.Failed()) {
|
|
NS_WARNING("Selection::SetBaseAndExtentInLimiter() failed");
|
|
}
|
|
return error.StealNSResult();
|
|
}
|
|
|
|
// static
|
|
template <typename PT, typename RT>
|
|
EditorDOMPoint HTMLEditor::GetWhiteSpaceEndPoint(
|
|
const RangeBoundaryBase<PT, RT>& aPoint, ScanDirection aScanDirection) {
|
|
if (NS_WARN_IF(!aPoint.IsSet()) ||
|
|
NS_WARN_IF(!aPoint.Container()->IsContent())) {
|
|
return EditorDOMPoint();
|
|
}
|
|
|
|
bool isSpace = false, isNBSP = false;
|
|
nsIContent* newContent = aPoint.Container()->AsContent();
|
|
int32_t newOffset = *aPoint.Offset(
|
|
RangeBoundaryBase<PT, RT>::OffsetFilter::kValidOrInvalidOffsets);
|
|
while (newContent) {
|
|
int32_t offset = -1;
|
|
nsCOMPtr<nsIContent> content;
|
|
if (aScanDirection == ScanDirection::Backward) {
|
|
HTMLEditor::IsPrevCharInNodeWhitespace(newContent, newOffset, &isSpace,
|
|
&isNBSP, getter_AddRefs(content),
|
|
&offset);
|
|
} else {
|
|
HTMLEditor::IsNextCharInNodeWhitespace(newContent, newOffset, &isSpace,
|
|
&isNBSP, getter_AddRefs(content),
|
|
&offset);
|
|
}
|
|
if (!isSpace && !isNBSP) {
|
|
break;
|
|
}
|
|
newContent = content;
|
|
newOffset = offset;
|
|
}
|
|
return EditorDOMPoint(newContent, newOffset);
|
|
}
|
|
|
|
template <typename PT, typename RT>
|
|
EditorDOMPoint HTMLEditor::GetCurrentHardLineStartPoint(
|
|
const RangeBoundaryBase<PT, RT>& aPoint, EditSubAction aEditSubAction) {
|
|
if (NS_WARN_IF(!aPoint.IsSet())) {
|
|
return EditorDOMPoint();
|
|
}
|
|
|
|
EditorDOMPoint point(aPoint);
|
|
// Start scanning from the container node if aPoint is in a text node.
|
|
// XXX Perhaps, IsInDataNode() must be expected.
|
|
if (point.IsInTextNode()) {
|
|
if (!point.GetContainer()->GetParentNode()) {
|
|
// Okay, can't promote any further
|
|
// XXX Why don't we return start of the text node?
|
|
return point;
|
|
}
|
|
point.Set(point.GetContainer());
|
|
}
|
|
|
|
// Look back through any further inline nodes that aren't across a <br>
|
|
// from us, and that are enclosed in the same block.
|
|
// I.e., looking for start of current hard line.
|
|
for (nsIContent* previousEditableContent =
|
|
GetPreviousEditableHTMLNodeInBlock(point);
|
|
previousEditableContent && previousEditableContent->GetParentNode() &&
|
|
!IsVisibleBRElement(previousEditableContent) &&
|
|
!HTMLEditUtils::IsBlockElement(*previousEditableContent);
|
|
previousEditableContent = GetPreviousEditableHTMLNodeInBlock(point)) {
|
|
point.Set(previousEditableContent);
|
|
// XXX Why don't we check \n in pre-formated text node here?
|
|
}
|
|
|
|
// Finding the real start for this point unless current line starts after
|
|
// <br> element. Look up the tree for as long as we are the first node in
|
|
// the container (typically, start of nearest block ancestor), and as long
|
|
// as we haven't hit the body node.
|
|
for (nsIContent* nearContent = GetPreviousEditableHTMLNodeInBlock(point);
|
|
!nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) &&
|
|
point.GetContainer()->GetParentNode();
|
|
nearContent = GetPreviousEditableHTMLNodeInBlock(point)) {
|
|
// Don't keep looking up if we have found a blockquote element to act on
|
|
// when we handle outdent.
|
|
// XXX Sounds like this is hacky. If possible, it should be check in
|
|
// outdent handler for consistency between edit sub-actions.
|
|
// We should check Chromium's behavior of outdent when Selection
|
|
// starts from `<blockquote>` and starts from first child of
|
|
// `<blockquote>`.
|
|
if (aEditSubAction == EditSubAction::eOutdent &&
|
|
point.IsContainerHTMLElement(nsGkAtoms::blockquote)) {
|
|
break;
|
|
}
|
|
|
|
// Don't walk past the editable section. Note that we need to check
|
|
// before walking up to a parent because we need to return the parent
|
|
// object, so the parent itself might not be in the editable area, but
|
|
// it's OK if we're not performing a block-level action.
|
|
// XXX Here is too slow. Let's cache active editing host first, then,
|
|
// compair with container of the point when we climb up the tree.
|
|
bool blockLevelAction =
|
|
aEditSubAction == EditSubAction::eIndent ||
|
|
aEditSubAction == EditSubAction::eOutdent ||
|
|
aEditSubAction == EditSubAction::eSetOrClearAlignment ||
|
|
aEditSubAction == EditSubAction::eCreateOrRemoveBlock;
|
|
if (!IsDescendantOfEditorRoot(point.GetContainer()->GetParentNode()) &&
|
|
(blockLevelAction || !IsDescendantOfEditorRoot(point.GetContainer()))) {
|
|
break;
|
|
}
|
|
|
|
point.Set(point.GetContainer());
|
|
}
|
|
return point;
|
|
}
|
|
|
|
template <typename PT, typename RT>
|
|
EditorDOMPoint HTMLEditor::GetCurrentHardLineEndPoint(
|
|
const RangeBoundaryBase<PT, RT>& aPoint) {
|
|
if (NS_WARN_IF(!aPoint.IsSet())) {
|
|
return EditorDOMPoint();
|
|
}
|
|
|
|
EditorDOMPoint point(aPoint);
|
|
// Start scanning from the container node if aPoint is in a text node.
|
|
// XXX Perhaps, IsInDataNode() must be expected.
|
|
if (point.IsInTextNode()) {
|
|
if (!point.GetContainer()->GetParentNode()) {
|
|
// Okay, can't promote any further
|
|
// XXX Why don't we return end of the text node?
|
|
return point;
|
|
}
|
|
// want to be after the text node
|
|
point.SetAfter(point.GetContainer());
|
|
NS_WARNING_ASSERTION(point.IsSet(), "Failed to set to after the text node");
|
|
}
|
|
|
|
// Look ahead through any further inline nodes that aren't across a <br> from
|
|
// us, and that are enclosed in the same block.
|
|
// XXX Currently, we stop block-extending when finding visible <br> element.
|
|
// This might be different from "block-extend" of execCommand spec.
|
|
// However, the spec is really unclear.
|
|
// XXX Probably, scanning only editable nodes is wrong for
|
|
// EditSubAction::eCreateOrRemoveBlock because it might be better to wrap
|
|
// existing inline elements even if it's non-editable. For example,
|
|
// following examples with insertParagraph causes different result:
|
|
// * <div contenteditable>foo[]<b contenteditable="false">bar</b></div>
|
|
// * <div contenteditable>foo[]<b>bar</b></div>
|
|
// * <div contenteditable>foo[]<b contenteditable="false">bar</b>baz</div>
|
|
// Only in the first case, after the caret position isn't wrapped with
|
|
// new <div> element.
|
|
for (nsIContent* nextEditableContent = GetNextEditableHTMLNodeInBlock(point);
|
|
nextEditableContent &&
|
|
!HTMLEditUtils::IsBlockElement(*nextEditableContent) &&
|
|
nextEditableContent->GetParent();
|
|
nextEditableContent = GetNextEditableHTMLNodeInBlock(point)) {
|
|
point.SetAfter(nextEditableContent);
|
|
if (NS_WARN_IF(!point.IsSet())) {
|
|
break;
|
|
}
|
|
if (IsVisibleBRElement(nextEditableContent)) {
|
|
break;
|
|
}
|
|
|
|
// Check for newlines in pre-formatted text nodes.
|
|
if (EditorBase::IsPreformatted(nextEditableContent) &&
|
|
nextEditableContent->IsText()) {
|
|
nsAutoString textContent;
|
|
nextEditableContent->GetAsText()->GetData(textContent);
|
|
int32_t newlinePos = textContent.FindChar(nsCRT::LF);
|
|
if (newlinePos >= 0) {
|
|
if (static_cast<uint32_t>(newlinePos) + 1 == textContent.Length()) {
|
|
// No need for special processing if the newline is at the end.
|
|
break;
|
|
}
|
|
return EditorDOMPoint(nextEditableContent, newlinePos + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Finding the real end for this point unless current line ends with a <br>
|
|
// element. Look up the tree for as long as we are the last node in the
|
|
// container (typically, block node), and as long as we haven't hit the body
|
|
// node.
|
|
for (nsIContent* nearContent = GetNextEditableHTMLNodeInBlock(point);
|
|
!nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) &&
|
|
point.GetContainer()->GetParentNode();
|
|
nearContent = GetNextEditableHTMLNodeInBlock(point)) {
|
|
// Don't walk past the editable section. Note that we need to check before
|
|
// walking up to a parent because we need to return the parent object, so
|
|
// the parent itself might not be in the editable area, but it's OK.
|
|
// XXX Maybe returning parent of editing host is really error prone since
|
|
// everybody need to check whether the end point is in editing host
|
|
// when they touch there.
|
|
// XXX Here is too slow. Let's cache active editing host first, then,
|
|
// compair with container of the point when we climb up the tree.
|
|
if (!IsDescendantOfEditorRoot(point.GetContainer()) &&
|
|
!IsDescendantOfEditorRoot(point.GetContainer()->GetParentNode())) {
|
|
break;
|
|
}
|
|
|
|
point.SetAfter(point.GetContainer());
|
|
if (NS_WARN_IF(!point.IsSet())) {
|
|
break;
|
|
}
|
|
}
|
|
return point;
|
|
}
|
|
|
|
void HTMLEditor::GetSelectionRangesExtendedToIncludeAdjuscentWhiteSpaces(
|
|
nsTArray<RefPtr<nsRange>>& aOutArrayOfRanges) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aOutArrayOfRanges.IsEmpty());
|
|
|
|
aOutArrayOfRanges.SetCapacity(SelectionRefPtr()->RangeCount());
|
|
for (uint32_t i = 0; i < SelectionRefPtr()->RangeCount(); i++) {
|
|
nsRange* selectionRange = SelectionRefPtr()->GetRangeAt(i);
|
|
MOZ_ASSERT(selectionRange);
|
|
|
|
RefPtr<nsRange> extendedRange =
|
|
CreateRangeIncludingAdjuscentWhiteSpaces(*selectionRange);
|
|
if (!extendedRange) {
|
|
extendedRange = selectionRange->CloneRange();
|
|
}
|
|
|
|
aOutArrayOfRanges.AppendElement(extendedRange);
|
|
}
|
|
}
|
|
void HTMLEditor::GetSelectionRangesExtendedToHardLineStartAndEnd(
|
|
nsTArray<RefPtr<nsRange>>& aOutArrayOfRanges,
|
|
EditSubAction aEditSubAction) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aOutArrayOfRanges.IsEmpty());
|
|
|
|
aOutArrayOfRanges.SetCapacity(SelectionRefPtr()->RangeCount());
|
|
for (uint32_t i = 0; i < SelectionRefPtr()->RangeCount(); i++) {
|
|
// Make a new adjusted range to represent the appropriate block content.
|
|
// The basic idea is to push out the range endpoints to truly enclose the
|
|
// blocks that we will affect. This call alters opRange.
|
|
nsRange* selectionRange = SelectionRefPtr()->GetRangeAt(i);
|
|
MOZ_ASSERT(selectionRange);
|
|
|
|
RefPtr<nsRange> extendedRange = CreateRangeExtendedToHardLineStartAndEnd(
|
|
*selectionRange, aEditSubAction);
|
|
if (!extendedRange) {
|
|
extendedRange = selectionRange->CloneRange();
|
|
}
|
|
|
|
aOutArrayOfRanges.AppendElement(extendedRange);
|
|
}
|
|
}
|
|
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
void HTMLEditor::SelectBRElementIfCollapsedInEmptyBlock(
|
|
RangeBoundaryBase<SPT, SRT>& aStartRef,
|
|
RangeBoundaryBase<EPT, ERT>& aEndRef) {
|
|
// MOOSE major hack:
|
|
// The GetWhiteSpaceEndPoint(), GetCurrentHardLineStartPoint() and
|
|
// GetCurrentHardLineEndPoint() don't really do the right thing for
|
|
// collapsed ranges inside block elements that contain nothing but a solo
|
|
// <br>. It's easier/ to put a workaround here than to revamp them. :-(
|
|
// XXX This sounds odd in the cases using `GetWhiteSpaceEndPoint()`. Don't
|
|
// we hack something in the edit sub-action handlers?
|
|
if (aStartRef != aEndRef) {
|
|
return;
|
|
}
|
|
|
|
if (!aStartRef.Container()->IsContent()) {
|
|
return;
|
|
}
|
|
|
|
Element* blockElement = HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*aStartRef.Container()->AsContent());
|
|
if (!blockElement) {
|
|
return;
|
|
}
|
|
|
|
Element* editingHost = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!editingHost)) {
|
|
return;
|
|
}
|
|
|
|
// Make sure we don't go higher than our root element in the content tree
|
|
if (editingHost->IsInclusiveDescendantOf(blockElement)) {
|
|
return;
|
|
}
|
|
|
|
if (IsEmptyNode(*blockElement, true, false)) {
|
|
aStartRef = {blockElement, 0u};
|
|
aEndRef = {blockElement, blockElement->Length()};
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsRange> HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
|
|
const AbstractRange& aAbstractRange) {
|
|
if (!aAbstractRange.IsPositioned()) {
|
|
return nullptr;
|
|
}
|
|
return CreateRangeIncludingAdjuscentWhiteSpaces(aAbstractRange.StartRef(),
|
|
aAbstractRange.EndRef());
|
|
}
|
|
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
already_AddRefed<nsRange> HTMLEditor::CreateRangeIncludingAdjuscentWhiteSpaces(
|
|
const RangeBoundaryBase<SPT, SRT>& aStartRef,
|
|
const RangeBoundaryBase<EPT, ERT>& aEndRef) {
|
|
if (NS_WARN_IF(!aStartRef.IsSet()) || NS_WARN_IF(!aEndRef.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aStartRef.Container()->IsContent() ||
|
|
!aEndRef.Container()->IsContent()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RangeBoundaryBase<SPT, SRT> startRef(aStartRef);
|
|
RangeBoundaryBase<EPT, ERT> endRef(aEndRef);
|
|
SelectBRElementIfCollapsedInEmptyBlock(startRef, endRef);
|
|
|
|
// For text actions, we want to look backwards (or forwards, as
|
|
// appropriate) for additional whitespace or nbsp's. We may have to act
|
|
// on these later even though they are outside of the initial selection.
|
|
// Even if they are in another node!
|
|
// XXX Although the comment mentioned that this may scan other text nodes,
|
|
// GetWhiteSpaceEndPoint() scans only in given container node.
|
|
// XXX Looks like that we should make GetWhiteSpaceEndPoint() be a
|
|
// instance method and stop scanning whitespaces when it reaches
|
|
// active editing host.
|
|
EditorDOMPoint startPoint = HTMLEditor::GetWhiteSpaceEndPoint(
|
|
startRef, HTMLEditor::ScanDirection::Backward);
|
|
if (!IsDescendantOfEditorRoot(
|
|
EditorBase::GetNodeAtRangeOffsetPoint(startPoint))) {
|
|
return nullptr;
|
|
}
|
|
EditorDOMPoint endPoint = HTMLEditor::GetWhiteSpaceEndPoint(
|
|
endRef, HTMLEditor::ScanDirection::Forward);
|
|
EditorRawDOMPoint lastRawPoint(endPoint);
|
|
lastRawPoint.RewindOffset();
|
|
if (!IsDescendantOfEditorRoot(
|
|
EditorBase::GetNodeAtRangeOffsetPoint(lastRawPoint))) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsRange> range =
|
|
nsRange::Create(startPoint.ToRawRangeBoundary(),
|
|
endPoint.ToRawRangeBoundary(), IgnoreErrors());
|
|
NS_WARNING_ASSERTION(range, "nsRange::Create() failed");
|
|
return range.forget();
|
|
}
|
|
|
|
already_AddRefed<nsRange> HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
|
|
const AbstractRange& aAbstractRange, EditSubAction aEditSubAction) {
|
|
if (!aAbstractRange.IsPositioned()) {
|
|
return nullptr;
|
|
}
|
|
return CreateRangeExtendedToHardLineStartAndEnd(
|
|
aAbstractRange.StartRef(), aAbstractRange.EndRef(), aEditSubAction);
|
|
}
|
|
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
already_AddRefed<nsRange> HTMLEditor::CreateRangeExtendedToHardLineStartAndEnd(
|
|
const RangeBoundaryBase<SPT, SRT>& aStartRef,
|
|
const RangeBoundaryBase<EPT, ERT>& aEndRef, EditSubAction aEditSubAction) {
|
|
if (NS_WARN_IF(!aStartRef.IsSet()) || NS_WARN_IF(!aEndRef.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
|
|
RangeBoundaryBase<SPT, SRT> startRef(aStartRef);
|
|
RangeBoundaryBase<EPT, ERT> endRef(aEndRef);
|
|
SelectBRElementIfCollapsedInEmptyBlock(startRef, endRef);
|
|
|
|
// Make a new adjusted range to represent the appropriate block content.
|
|
// This is tricky. The basic idea is to push out the range endpoints to
|
|
// truly enclose the blocks that we will affect.
|
|
|
|
// Make sure that the new range ends up to be in the editable section.
|
|
// XXX Looks like that this check wastes the time. Perhaps, we should
|
|
// implement a method which checks both two DOM points in the editor
|
|
// root.
|
|
|
|
EditorDOMPoint startPoint =
|
|
GetCurrentHardLineStartPoint(startRef, aEditSubAction);
|
|
// XXX GetCurrentHardLineStartPoint() may return point of editing
|
|
// host. Perhaps, we should change it and stop checking it here
|
|
// since this check may be expensive.
|
|
if (!IsDescendantOfEditorRoot(
|
|
EditorBase::GetNodeAtRangeOffsetPoint(startPoint))) {
|
|
return nullptr;
|
|
}
|
|
EditorDOMPoint endPoint = GetCurrentHardLineEndPoint(endRef);
|
|
EditorRawDOMPoint lastRawPoint(endPoint);
|
|
lastRawPoint.RewindOffset();
|
|
// XXX GetCurrentHardLineEndPoint() may return point of editing host.
|
|
// Perhaps, we should change it and stop checking it here since this
|
|
// check may be expensive.
|
|
if (!IsDescendantOfEditorRoot(
|
|
EditorBase::GetNodeAtRangeOffsetPoint(lastRawPoint))) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsRange> range =
|
|
nsRange::Create(startPoint.ToRawRangeBoundary(),
|
|
endPoint.ToRawRangeBoundary(), IgnoreErrors());
|
|
NS_WARNING_ASSERTION(range, "nsRange::Create() failed");
|
|
return range.forget();
|
|
}
|
|
|
|
nsresult HTMLEditor::SplitInlinesAndCollectEditTargetNodes(
|
|
nsTArray<RefPtr<nsRange>>& aArrayOfRanges,
|
|
nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents,
|
|
EditSubAction aEditSubAction,
|
|
CollectNonEditableNodes aCollectNonEditableNodes) {
|
|
nsresult rv = SplitTextNodesAtRangeEnd(aArrayOfRanges);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SplitTextNodesAtRangeEnd() failed");
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = SplitParentInlineElementsAtRangeEdges(aArrayOfRanges);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SplitParentInlineElementsAtRangeEdges() failed");
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = CollectEditTargetNodes(aArrayOfRanges, aOutArrayOfContents,
|
|
aEditSubAction, aCollectNonEditableNodes);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollectEditTargetNodes() failed");
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = MaybeSplitElementsAtEveryBRElement(aOutArrayOfContents, aEditSubAction);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::MaybeSplitElementsAtEveryBRElement() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::SplitTextNodesAtRangeEnd(
|
|
nsTArray<RefPtr<nsRange>>& aArrayOfRanges) {
|
|
// Split text nodes. This is necessary, since given ranges may end in text
|
|
// nodes in case where part of a pre-formatted elements needs to be moved.
|
|
ErrorResult error;
|
|
IgnoredErrorResult ignoredError;
|
|
for (RefPtr<nsRange>& range : aArrayOfRanges) {
|
|
EditorDOMPoint atEnd(range->EndRef());
|
|
if (NS_WARN_IF(!atEnd.IsSet()) || !atEnd.IsInTextNode()) {
|
|
continue;
|
|
}
|
|
|
|
if (!atEnd.IsStartOfContainer() && !atEnd.IsEndOfContainer()) {
|
|
// Split the text node.
|
|
nsCOMPtr<nsIContent> newLeftNode = SplitNodeWithTransaction(atEnd, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING_ASSERTION(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED),
|
|
"EditorBase::SplitNodeWithTransaction() failed");
|
|
return error.StealNSResult();
|
|
}
|
|
|
|
// Correct the range.
|
|
// The new end parent becomes the parent node of the text.
|
|
EditorRawDOMPoint atContainerOfSplitNode(atEnd.GetContainer());
|
|
MOZ_ASSERT(!range->IsInSelection());
|
|
range->SetEnd(atContainerOfSplitNode, ignoredError);
|
|
NS_WARNING_ASSERTION(!ignoredError.Failed(),
|
|
"nsRange::SetEnd() failed, but ignored");
|
|
ignoredError.SuppressException();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::SplitParentInlineElementsAtRangeEdges(
|
|
nsTArray<RefPtr<nsRange>>& aArrayOfRanges) {
|
|
nsTArray<OwningNonNull<RangeItem>> rangeItemArray;
|
|
rangeItemArray.AppendElements(aArrayOfRanges.Length());
|
|
|
|
// First register ranges for special editor gravity
|
|
for (auto& rangeItem : rangeItemArray) {
|
|
rangeItem = new RangeItem();
|
|
rangeItem->StoreRange(*aArrayOfRanges[0]);
|
|
RangeUpdaterRef().RegisterRangeItem(*rangeItem);
|
|
aArrayOfRanges.RemoveElementAt(0);
|
|
}
|
|
// Now bust up inlines.
|
|
nsresult rv = NS_OK;
|
|
for (auto& item : Reversed(rangeItemArray)) {
|
|
// MOZ_KnownLive because 'rangeItemArray' is guaranteed to keep it alive.
|
|
rv = SplitParentInlineElementsAtRangeEdges(MOZ_KnownLive(*item));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::SplitParentInlineElementsAtRangeEdges() failed");
|
|
break;
|
|
}
|
|
}
|
|
// Then unregister the ranges
|
|
for (auto& item : rangeItemArray) {
|
|
RangeUpdaterRef().DropRangeItem(item);
|
|
RefPtr<nsRange> range = item->GetRange();
|
|
if (range) {
|
|
aArrayOfRanges.AppendElement(range);
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::CollectEditTargetNodes(
|
|
nsTArray<RefPtr<nsRange>>& aArrayOfRanges,
|
|
nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents,
|
|
EditSubAction aEditSubAction,
|
|
CollectNonEditableNodes aCollectNonEditableNodes) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// Gather up a list of all the nodes
|
|
for (auto& range : aArrayOfRanges) {
|
|
DOMSubtreeIterator iter;
|
|
nsresult rv = iter.Init(*range);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("DOMSubtreeIterator::Init() failed");
|
|
return rv;
|
|
}
|
|
if (aOutArrayOfContents.IsEmpty()) {
|
|
iter.AppendAllNodesToArray(aOutArrayOfContents);
|
|
} else {
|
|
AutoTArray<OwningNonNull<nsIContent>, 24> arrayOfTopChildren;
|
|
iter.AppendNodesToArray(
|
|
+[](nsINode& aNode, void* aArray) -> bool {
|
|
MOZ_ASSERT(aArray);
|
|
return !static_cast<nsTArray<OwningNonNull<nsIContent>>*>(aArray)
|
|
->Contains(&aNode);
|
|
},
|
|
arrayOfTopChildren, &aOutArrayOfContents);
|
|
aOutArrayOfContents.AppendElements(std::move(arrayOfTopChildren));
|
|
}
|
|
if (aCollectNonEditableNodes == CollectNonEditableNodes::No) {
|
|
for (size_t i = aOutArrayOfContents.Length(); i > 0; --i) {
|
|
if (!EditorUtils::IsEditableContent(aOutArrayOfContents[i - 1],
|
|
EditorType::HTML)) {
|
|
aOutArrayOfContents.RemoveElementAt(i - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (aEditSubAction) {
|
|
case EditSubAction::eCreateOrRemoveBlock:
|
|
// Certain operations should not act on li's and td's, but rather inside
|
|
// them. Alter the list as needed.
|
|
for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent> content = aOutArrayOfContents[i];
|
|
if (HTMLEditUtils::IsListItem(content)) {
|
|
aOutArrayOfContents.RemoveElementAt(i);
|
|
CollectChildren(*content, aOutArrayOfContents, i,
|
|
CollectListChildren::Yes, CollectTableChildren::Yes,
|
|
aCollectNonEditableNodes);
|
|
}
|
|
}
|
|
// Empty text node shouldn't be selected if unnecessary
|
|
for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
if (Text* text = aOutArrayOfContents[i]->GetAsText()) {
|
|
// Don't select empty text except to empty block
|
|
if (!IsVisibleTextNode(*text)) {
|
|
aOutArrayOfContents.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case EditSubAction::eCreateOrChangeList: {
|
|
for (size_t i = aOutArrayOfContents.Length(); i > 0; i--) {
|
|
// Scan for table elements. If we find table elements other than
|
|
// table, replace it with a list of any editable non-table content
|
|
// because if a selection range starts from end in a table-cell and
|
|
// ends at or starts from outside the `<table>`, we need to make
|
|
// lists in each selected table-cells.
|
|
OwningNonNull<nsIContent> content = aOutArrayOfContents[i - 1];
|
|
if (HTMLEditUtils::IsTableElementButNotTable(content)) {
|
|
// XXX aCollectNonEditableNodes is ignored here. Maybe a bug.
|
|
aOutArrayOfContents.RemoveElementAt(i - 1);
|
|
CollectChildren(content, aOutArrayOfContents, i - 1,
|
|
CollectListChildren::No, CollectTableChildren::Yes,
|
|
CollectNonEditableNodes::Yes);
|
|
}
|
|
}
|
|
// If there is only one node in the array, and it is a `<div>`,
|
|
// `<blockquote>` or a list element, then look inside of it until we
|
|
// find inner list or content.
|
|
if (aOutArrayOfContents.Length() != 1) {
|
|
break;
|
|
}
|
|
Element* deepestDivBlockquoteOrListElement =
|
|
GetDeepestEditableOnlyChildDivBlockquoteOrListElement(
|
|
aOutArrayOfContents[0]);
|
|
if (!deepestDivBlockquoteOrListElement) {
|
|
break;
|
|
}
|
|
if (deepestDivBlockquoteOrListElement->IsAnyOfHTMLElements(
|
|
nsGkAtoms::div, nsGkAtoms::blockquote)) {
|
|
aOutArrayOfContents.Clear();
|
|
// XXX Before we're called, non-editable nodes are ignored. However,
|
|
// we may append non-editable nodes here.
|
|
CollectChildren(*deepestDivBlockquoteOrListElement, aOutArrayOfContents,
|
|
0, CollectListChildren::No, CollectTableChildren::No,
|
|
CollectNonEditableNodes::Yes);
|
|
break;
|
|
}
|
|
aOutArrayOfContents.ReplaceElementAt(
|
|
0, OwningNonNull<nsIContent>(*deepestDivBlockquoteOrListElement));
|
|
break;
|
|
}
|
|
case EditSubAction::eOutdent:
|
|
case EditSubAction::eIndent:
|
|
case EditSubAction::eSetPositionToAbsolute:
|
|
// Indent/outdent already do something special for list items, but we
|
|
// still need to make sure we don't act on table elements
|
|
for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent> content = aOutArrayOfContents[i];
|
|
if (HTMLEditUtils::IsTableElementButNotTable(content)) {
|
|
aOutArrayOfContents.RemoveElementAt(i);
|
|
CollectChildren(*content, aOutArrayOfContents, i,
|
|
CollectListChildren::Yes, CollectTableChildren::Yes,
|
|
aCollectNonEditableNodes);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// Outdent should look inside of divs.
|
|
if (aEditSubAction == EditSubAction::eOutdent && !IsCSSEnabled()) {
|
|
for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent> content = aOutArrayOfContents[i];
|
|
if (content->IsHTMLElement(nsGkAtoms::div)) {
|
|
aOutArrayOfContents.RemoveElementAt(i);
|
|
CollectChildren(*content, aOutArrayOfContents, i,
|
|
CollectListChildren::No, CollectTableChildren::No,
|
|
aCollectNonEditableNodes);
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::MaybeSplitElementsAtEveryBRElement(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents,
|
|
EditSubAction aEditSubAction) {
|
|
// Post-process the list to break up inline containers that contain br's, but
|
|
// only for operations that might care, like making lists or paragraphs
|
|
switch (aEditSubAction) {
|
|
case EditSubAction::eCreateOrRemoveBlock:
|
|
case EditSubAction::eMergeBlockContents:
|
|
case EditSubAction::eCreateOrChangeList:
|
|
case EditSubAction::eSetOrClearAlignment:
|
|
case EditSubAction::eSetPositionToAbsolute:
|
|
case EditSubAction::eIndent:
|
|
case EditSubAction::eOutdent:
|
|
for (int32_t i = aArrayOfContents.Length() - 1; i >= 0; i--) {
|
|
OwningNonNull<nsIContent>& content = aArrayOfContents[i];
|
|
if (HTMLEditUtils::IsInlineElement(content) &&
|
|
HTMLEditUtils::IsContainerNode(content) && !content->IsText()) {
|
|
AutoTArray<OwningNonNull<nsIContent>, 24> arrayOfInlineContents;
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to keep it
|
|
// alive.
|
|
nsresult rv = SplitElementsAtEveryBRElement(MOZ_KnownLive(content),
|
|
arrayOfInlineContents);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::SplitElementsAtEveryBRElement() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Put these nodes in aArrayOfContents, replacing the current node
|
|
aArrayOfContents.RemoveElementAt(i);
|
|
aArrayOfContents.InsertElementsAt(i, arrayOfInlineContents);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
default:
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
Element* HTMLEditor::GetParentListElementAtSelection() const {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!IsSelectionRangeContainerNotContent());
|
|
|
|
for (uint32_t i = 0; i < SelectionRefPtr()->RangeCount(); ++i) {
|
|
nsRange* range = SelectionRefPtr()->GetRangeAt(i);
|
|
for (nsINode* parent = range->GetClosestCommonInclusiveAncestor(); parent;
|
|
parent = parent->GetParentNode()) {
|
|
if (HTMLEditUtils::IsList(parent)) {
|
|
return parent->AsElement();
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
Element* HTMLEditor::GetDeepestEditableOnlyChildDivBlockquoteOrListElement(
|
|
nsINode& aNode) {
|
|
if (!aNode.IsElement()) {
|
|
return nullptr;
|
|
}
|
|
// XXX If aNode is non-editable, shouldn't we return nullptr here?
|
|
Element* parentElement = nullptr;
|
|
for (nsIContent* content = aNode.AsContent();
|
|
content && content->IsElement() &&
|
|
(content->IsAnyOfHTMLElements(nsGkAtoms::div, nsGkAtoms::blockquote) ||
|
|
HTMLEditUtils::IsList(content));
|
|
content = content->GetFirstChild()) {
|
|
if (CountEditableChildren(content) != 1) {
|
|
return content->AsElement();
|
|
}
|
|
parentElement = content->AsElement();
|
|
}
|
|
return parentElement;
|
|
}
|
|
|
|
nsresult HTMLEditor::SplitParentInlineElementsAtRangeEdges(
|
|
RangeItem& aRangeItem) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!aRangeItem.IsCollapsed()) {
|
|
nsCOMPtr<nsIContent> mostAncestorInlineContentAtEnd =
|
|
GetMostAncestorInlineElement(*aRangeItem.mEndContainer);
|
|
|
|
if (mostAncestorInlineContentAtEnd) {
|
|
SplitNodeResult splitEndInlineResult = SplitNodeDeepWithTransaction(
|
|
*mostAncestorInlineContentAtEnd, aRangeItem.EndPoint(),
|
|
SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitEndInlineResult.Failed()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
return splitEndInlineResult.Rv();
|
|
}
|
|
EditorRawDOMPoint splitPointAtEnd(splitEndInlineResult.SplitPoint());
|
|
if (!splitPointAtEnd.IsSet()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) didn't return split point");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
aRangeItem.mEndContainer = splitPointAtEnd.GetContainer();
|
|
aRangeItem.mEndOffset = splitPointAtEnd.Offset();
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> mostAncestorInlineContentAtStart =
|
|
GetMostAncestorInlineElement(*aRangeItem.mStartContainer);
|
|
|
|
if (mostAncestorInlineContentAtStart) {
|
|
SplitNodeResult splitStartInlineResult = SplitNodeDeepWithTransaction(
|
|
*mostAncestorInlineContentAtStart, aRangeItem.StartPoint(),
|
|
SplitAtEdges::eDoNotCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitStartInlineResult.Failed()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) failed");
|
|
return splitStartInlineResult.Rv();
|
|
}
|
|
// XXX If we split only here because of collapsed range, we're modifying
|
|
// only start point of aRangeItem. Shouldn't we modify end point here
|
|
// if it's collapsed?
|
|
EditorRawDOMPoint splitPointAtStart(splitStartInlineResult.SplitPoint());
|
|
if (!splitPointAtStart.IsSet()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eDoNotCreateEmptyContainer) didn't return split point");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
aRangeItem.mStartContainer = splitPointAtStart.GetContainer();
|
|
aRangeItem.mStartOffset = splitPointAtStart.Offset();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::SplitElementsAtEveryBRElement(
|
|
nsIContent& aMostAncestorToBeSplit,
|
|
nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// First build up a list of all the break nodes inside the inline container.
|
|
AutoTArray<OwningNonNull<HTMLBRElement>, 24> arrayOfBRElements;
|
|
DOMIterator iter(aMostAncestorToBeSplit);
|
|
iter.AppendAllNodesToArray(arrayOfBRElements);
|
|
|
|
// If there aren't any breaks, just put inNode itself in the array
|
|
if (arrayOfBRElements.IsEmpty()) {
|
|
aOutArrayOfContents.AppendElement(aMostAncestorToBeSplit);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Else we need to bust up aMostAncestorToBeSplit along all the breaks
|
|
nsCOMPtr<nsIContent> nextContent = &aMostAncestorToBeSplit;
|
|
for (OwningNonNull<HTMLBRElement>& brElement : arrayOfBRElements) {
|
|
EditorDOMPoint atBRNode(brElement);
|
|
if (NS_WARN_IF(!atBRNode.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
SplitNodeResult splitNodeResult = SplitNodeDeepWithTransaction(
|
|
*nextContent, atBRNode, SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING("EditorBase::SplitNodeDeepWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
|
|
// Put previous node at the split point.
|
|
if (splitNodeResult.GetPreviousNode()) {
|
|
// Might not be a left node. A break might have been at the very
|
|
// beginning of inline container, in which case
|
|
// SplitNodeDeepWithTransaction() would not actually split anything.
|
|
aOutArrayOfContents.AppendElement(*splitNodeResult.GetPreviousNode());
|
|
}
|
|
|
|
// Move break outside of container and also put in node list
|
|
EditorDOMPoint atNextNode(splitNodeResult.GetNextNode());
|
|
// MOZ_KnownLive because 'arrayOfBRElements' is guaranteed to keep it alive.
|
|
nsresult rv = MoveNodeWithTransaction(MOZ_KnownLive(brElement), atNextNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
aOutArrayOfContents.AppendElement(brElement);
|
|
|
|
nextContent = splitNodeResult.GetNextNode();
|
|
}
|
|
|
|
// Now tack on remaining next node.
|
|
aOutArrayOfContents.AppendElement(*nextContent);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* HTMLEditor::GetMostAncestorInlineElement(nsINode& aNode) const {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!aNode.IsContent() || HTMLEditUtils::IsBlockElement(*aNode.AsContent())) {
|
|
return nullptr;
|
|
}
|
|
|
|
Element* host = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!host)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// If aNode is the editing host itself, there is no modifiable inline
|
|
// parent.
|
|
if (&aNode == host) {
|
|
return nullptr;
|
|
}
|
|
|
|
// If aNode is outside of the <body> element, we don't support to edit
|
|
// such elements for now.
|
|
// XXX This should be MOZ_ASSERT after fixing bug 1413131 for avoiding
|
|
// calling this expensive method.
|
|
if (NS_WARN_IF(!EditorUtils::IsDescendantOf(aNode, *host))) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aNode.GetParent()) {
|
|
return aNode.AsContent();
|
|
}
|
|
|
|
// Looks for the highest inline parent in the editing host.
|
|
nsIContent* topMostInlineContent = aNode.AsContent();
|
|
for (nsIContent* content :
|
|
InclusiveAncestorsOfType<nsIContent>(*aNode.GetParent())) {
|
|
if (content == host || !HTMLEditUtils::IsInlineElement(*content)) {
|
|
break;
|
|
}
|
|
topMostInlineContent = content;
|
|
}
|
|
return topMostInlineContent;
|
|
}
|
|
|
|
// static
|
|
void HTMLEditor::MakeTransitionList(
|
|
const nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents,
|
|
nsTArray<bool>& aTransitionArray) {
|
|
nsINode* prevParent = nullptr;
|
|
aTransitionArray.EnsureLengthAtLeast(aArrayOfContents.Length());
|
|
for (uint32_t i = 0; i < aArrayOfContents.Length(); i++) {
|
|
aTransitionArray[i] = aArrayOfContents[i]->GetParentNode() != prevParent;
|
|
prevParent = aArrayOfContents[i]->GetParentNode();
|
|
}
|
|
}
|
|
|
|
Element* HTMLEditor::GetNearestAncestorListItemElement(
|
|
nsIContent& aContent) const {
|
|
// XXX Why don't we test whether aContent is in an editing host?
|
|
if (HTMLEditUtils::IsListItem(&aContent)) {
|
|
return aContent.AsElement();
|
|
}
|
|
|
|
// XXX This loop is too expensive since calling IsDescendantOfEditorRoot()
|
|
// a lot. Rewrite this with caching active editing host and check
|
|
// whether we reach it or not.
|
|
for (Element* parentElement = aContent.GetParentElement();
|
|
parentElement && IsDescendantOfEditorRoot(parentElement) &&
|
|
!HTMLEditUtils::IsTableElement(parentElement);
|
|
parentElement = parentElement->GetParentElement()) {
|
|
if (HTMLEditUtils::IsListItem(parentElement)) {
|
|
return parentElement;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleInsertParagraphInHeadingElement(Element& aHeader,
|
|
nsINode& aNode,
|
|
int32_t aOffset) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
// Remember where the header is
|
|
nsCOMPtr<nsINode> headerParent = aHeader.GetParentNode();
|
|
int32_t offset = headerParent ? headerParent->ComputeIndexOf(&aHeader) : -1;
|
|
|
|
// Get ws code to adjust any ws
|
|
nsCOMPtr<nsINode> node = &aNode;
|
|
nsresult rv = WSRunObject::PrepareToSplitAcrossBlocks(*this, address_of(node),
|
|
&aOffset);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToSplitAcrossBlocks() failed");
|
|
return rv;
|
|
}
|
|
if (!node->IsContent()) {
|
|
NS_WARNING(
|
|
"WSRunObject::PrepareToSplitAcrossBlocks() returned Document or "
|
|
"something non-content node");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Split the header
|
|
SplitNodeResult splitHeaderResult =
|
|
SplitNodeDeepWithTransaction(aHeader, EditorDOMPoint(node, aOffset),
|
|
SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
splitHeaderResult.Succeeded(),
|
|
"EditorBase::SplitNodeDeepWithTransaction() failed, but ignored");
|
|
|
|
// If the previous heading of split point is empty, put a padding <br>
|
|
// element for empty last line into it.
|
|
nsCOMPtr<nsIContent> prevItem = GetPriorHTMLSibling(&aHeader);
|
|
if (prevItem) {
|
|
MOZ_DIAGNOSTIC_ASSERT(HTMLEditUtils::IsHeader(*prevItem));
|
|
if (IsEmptyNode(*prevItem)) {
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(
|
|
EditorDOMPoint(prevItem, 0));
|
|
if (createPaddingBRResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction("
|
|
") failed");
|
|
return createPaddingBRResult.Rv();
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the new (righthand) header node is empty, delete it
|
|
if (IsEmptyBlockElement(aHeader, IgnoreSingleBR::Yes)) {
|
|
nsresult rv = DeleteNodeWithTransaction(aHeader);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
// Layout tells the caret to blink in a weird place if we don't place a
|
|
// break after the header.
|
|
nsCOMPtr<nsIContent> sibling;
|
|
if (aHeader.GetNextSibling()) {
|
|
sibling = GetNextHTMLSibling(aHeader.GetNextSibling());
|
|
}
|
|
if (!sibling || !sibling->IsHTMLElement(nsGkAtoms::br)) {
|
|
TopLevelEditSubActionDataRef().mCachedInlineStyles->Clear();
|
|
mTypeInState->ClearAllProps();
|
|
|
|
// Create a paragraph
|
|
nsStaticAtom& paraAtom = DefaultParagraphSeparatorTagName();
|
|
// We want a wrapper element even if we separate with <br>
|
|
EditorDOMPoint nextToHeader(headerParent, offset + 1);
|
|
RefPtr<Element> pOrDivElement = CreateNodeWithTransaction(
|
|
¶Atom == nsGkAtoms::br ? *nsGkAtoms::p : MOZ_KnownLive(paraAtom),
|
|
nextToHeader);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!pOrDivElement) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Append a <br> to it
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(EditorDOMPoint(pOrDivElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Set selection to before the break
|
|
nsresult rv = CollapseSelectionToStartOf(*pOrDivElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditorRawDOMPoint afterSibling(EditorRawDOMPoint::After(*sibling));
|
|
if (NS_WARN_IF(!afterSibling.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Put selection after break
|
|
rv = CollapseSelectionTo(afterSibling);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Put selection at front of righthand heading
|
|
rv = CollapseSelectionToStartOf(aHeader);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::HandleInsertParagraphInParagraph(
|
|
Element& aParentDivOrP) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint atStartOfSelection(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return EditActionResult(NS_ERROR_FAILURE);
|
|
}
|
|
MOZ_ASSERT(atStartOfSelection.IsSetAndValid());
|
|
|
|
// We shouldn't create new anchor element which has non-empty href unless
|
|
// splitting middle of it because we assume that users don't want to create
|
|
// *same* anchor element across two or more paragraphs in most cases.
|
|
// So, adjust selection start if it's edge of anchor element(s).
|
|
// XXX We don't support whitespace collapsing in these cases since it needs
|
|
// some additional work with WSRunObject but it's not usual case.
|
|
// E.g., |<a href="foo"><b>foo []</b> </a>|
|
|
if (atStartOfSelection.IsStartOfContainer()) {
|
|
for (nsIContent* container = atStartOfSelection.GetContainerAsContent();
|
|
container && container != &aParentDivOrP;
|
|
container = container->GetParent()) {
|
|
if (HTMLEditUtils::IsLink(container)) {
|
|
// Found link should be only in right node. So, we shouldn't split
|
|
// it.
|
|
atStartOfSelection.Set(container);
|
|
// Even if we found an anchor element, don't break because DOM API
|
|
// allows to nest anchor elements.
|
|
}
|
|
// If the container is middle of its parent, stop adjusting split point.
|
|
if (container->GetPreviousSibling()) {
|
|
// XXX Should we check if previous sibling is visible content?
|
|
// E.g., should we ignore comment node, invisible <br> element?
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
// We also need to check if selection is at invisible <br> element at end
|
|
// of an <a href="foo"> element because editor inserts a <br> element when
|
|
// user types Enter key after a whitespace which is at middle of
|
|
// <a href="foo"> element and when setting selection at end of the element,
|
|
// selection becomes referring the <br> element. We may need to change this
|
|
// behavior later if it'd be standardized.
|
|
else if (atStartOfSelection.IsEndOfContainer() ||
|
|
atStartOfSelection.IsBRElementAtEndOfContainer()) {
|
|
// If there are 2 <br> elements, the first <br> element is visible. E.g.,
|
|
// |<a href="foo"><b>boo[]<br></b><br></a>|, we should split the <a>
|
|
// element. Otherwise, E.g., |<a href="foo"><b>boo[]<br></b></a>|,
|
|
// we should not split the <a> element and ignore inline elements in it.
|
|
bool foundBRElement = atStartOfSelection.IsBRElementAtEndOfContainer();
|
|
for (nsIContent* container = atStartOfSelection.GetContainerAsContent();
|
|
container && container != &aParentDivOrP;
|
|
container = container->GetParent()) {
|
|
if (HTMLEditUtils::IsLink(container)) {
|
|
// Found link should be only in left node. So, we shouldn't split it.
|
|
atStartOfSelection.SetAfter(container);
|
|
// Even if we found an anchor element, don't break because DOM API
|
|
// allows to nest anchor elements.
|
|
}
|
|
// If the container is middle of its parent, stop adjusting split point.
|
|
if (nsIContent* nextSibling = container->GetNextSibling()) {
|
|
if (foundBRElement) {
|
|
// If we've already found a <br> element, we assume found node is
|
|
// visible <br> or something other node.
|
|
// XXX Should we check if non-text data node like comment?
|
|
break;
|
|
}
|
|
|
|
// XXX Should we check if non-text data node like comment?
|
|
if (!nextSibling->IsHTMLElement(nsGkAtoms::br)) {
|
|
break;
|
|
}
|
|
foundBRElement = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool doesCRCreateNewP = GetReturnInParagraphCreatesNewParagraph();
|
|
bool splitAfterNewBR = false;
|
|
nsCOMPtr<nsIContent> brContent;
|
|
|
|
EditorDOMPoint pointToSplitParentDivOrP(atStartOfSelection);
|
|
|
|
EditorDOMPoint pointToInsertBR;
|
|
if (doesCRCreateNewP && atStartOfSelection.GetContainer() == &aParentDivOrP) {
|
|
// We are at the edges of the block, so, we don't need to create new <br>.
|
|
brContent = nullptr;
|
|
} else if (atStartOfSelection.IsInTextNode()) {
|
|
// at beginning of text node?
|
|
if (atStartOfSelection.IsStartOfContainer()) {
|
|
// is there a BR prior to it?
|
|
brContent = GetPriorHTMLSibling(atStartOfSelection.GetContainer());
|
|
if (!brContent || !IsVisibleBRElement(brContent) ||
|
|
EditorUtils::IsPaddingBRElementForEmptyLastLine(*brContent)) {
|
|
pointToInsertBR.Set(atStartOfSelection.GetContainer());
|
|
brContent = nullptr;
|
|
}
|
|
} else if (atStartOfSelection.IsEndOfContainer()) {
|
|
// we're at the end of text node...
|
|
// is there a BR after to it?
|
|
brContent = GetNextHTMLSibling(atStartOfSelection.GetContainer());
|
|
if (!brContent || !IsVisibleBRElement(brContent) ||
|
|
EditorUtils::IsPaddingBRElementForEmptyLastLine(*brContent)) {
|
|
pointToInsertBR.SetAfter(atStartOfSelection.GetContainer());
|
|
NS_WARNING_ASSERTION(
|
|
pointToInsertBR.IsSet(),
|
|
"Failed to set to after the container of selection start");
|
|
brContent = nullptr;
|
|
}
|
|
} else {
|
|
if (doesCRCreateNewP) {
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> newLeftDivOrP =
|
|
SplitNodeWithTransaction(pointToSplitParentDivOrP, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING_ASSERTION(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED),
|
|
"EditorBase::SplitNodeWithTransaction() failed");
|
|
return EditActionResult(error.StealNSResult());
|
|
}
|
|
pointToSplitParentDivOrP.SetToEndOf(newLeftDivOrP);
|
|
}
|
|
|
|
// We need to put new <br> after the left node if given node was split
|
|
// above.
|
|
pointToInsertBR.Set(pointToSplitParentDivOrP.GetContainer());
|
|
DebugOnly<bool> advanced = pointToInsertBR.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset to after the container "
|
|
"of selection start");
|
|
}
|
|
} else {
|
|
// not in a text node.
|
|
// is there a BR prior to it?
|
|
nsCOMPtr<nsIContent> nearContent =
|
|
GetPreviousEditableHTMLNode(atStartOfSelection);
|
|
if (!nearContent || !IsVisibleBRElement(nearContent) ||
|
|
EditorUtils::IsPaddingBRElementForEmptyLastLine(*nearContent)) {
|
|
// is there a BR after it?
|
|
nearContent = GetNextEditableHTMLNode(atStartOfSelection);
|
|
if (!nearContent || !IsVisibleBRElement(nearContent) ||
|
|
EditorUtils::IsPaddingBRElementForEmptyLastLine(*nearContent)) {
|
|
pointToInsertBR = atStartOfSelection;
|
|
splitAfterNewBR = true;
|
|
}
|
|
}
|
|
if (!pointToInsertBR.IsSet() && nearContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
brContent = nearContent;
|
|
}
|
|
}
|
|
if (pointToInsertBR.IsSet()) {
|
|
// if CR does not create a new P, default to BR creation
|
|
if (NS_WARN_IF(!doesCRCreateNewP)) {
|
|
return EditActionResult(NS_OK);
|
|
}
|
|
|
|
brContent = InsertBRElementWithTransaction(pointToInsertBR);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
brContent,
|
|
"HTMLEditor::InsertBRElementWithTransaction() failed, but ignored");
|
|
if (splitAfterNewBR) {
|
|
// We split the parent after the br we've just inserted.
|
|
pointToSplitParentDivOrP.SetAfter(brContent);
|
|
NS_WARNING_ASSERTION(pointToSplitParentDivOrP.IsSet(),
|
|
"Failed to set after the new <br>");
|
|
}
|
|
}
|
|
EditActionResult result(
|
|
SplitParagraph(aParentDivOrP, pointToSplitParentDivOrP, brContent));
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::SplitParagraph() failed");
|
|
result.MarkAsHandled();
|
|
return result;
|
|
}
|
|
|
|
template <typename PT, typename CT>
|
|
nsresult HTMLEditor::SplitParagraph(
|
|
Element& aParentDivOrP, const EditorDOMPointBase<PT, CT>& aStartOfRightNode,
|
|
nsIContent* aNextBRNode) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsCOMPtr<nsINode> selNode = aStartOfRightNode.GetContainer();
|
|
int32_t selOffset = aStartOfRightNode.Offset();
|
|
nsresult rv = WSRunObject::PrepareToSplitAcrossBlocks(
|
|
*this, address_of(selNode), &selOffset);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToSplitAcrossBlocks() failed");
|
|
return rv;
|
|
}
|
|
if (!selNode->IsContent()) {
|
|
NS_WARNING(
|
|
"WSRunObject::PrepareToSplitAcrossBlocks() returned Document or "
|
|
"something non-content node");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Split the paragraph.
|
|
SplitNodeResult splitDivOrPResult = SplitNodeDeepWithTransaction(
|
|
aParentDivOrP, EditorDOMPoint(selNode, selOffset),
|
|
SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (splitDivOrPResult.Failed()) {
|
|
NS_WARNING("EditorBase::SplitNodeDeepWithTransaction() failed");
|
|
return splitDivOrPResult.Rv();
|
|
}
|
|
if (!splitDivOrPResult.DidSplit()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeDeepWithTransaction() didn't split any nodes");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Get rid of the break, if it is visible (otherwise it may be needed to
|
|
// prevent an empty p).
|
|
if (aNextBRNode && IsVisibleBRElement(aNextBRNode)) {
|
|
rv = DeleteNodeWithTransaction(*aNextBRNode);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Remove ID attribute on the paragraph from the existing right node.
|
|
rv = RemoveAttributeWithTransaction(aParentDivOrP, *nsGkAtoms::id);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::id) failed");
|
|
return rv;
|
|
}
|
|
|
|
// We need to ensure to both paragraphs visible even if they are empty.
|
|
// However, padding <br> element for empty last line isn't useful in this
|
|
// case because it'll be ignored by PlaintextSerializer. Additionally,
|
|
// it'll be exposed as <br> with Element.innerHTML. Therefore, we can use
|
|
// normal <br> elements for placeholder in this case. Note that Chromium
|
|
// also behaves so.
|
|
if (splitDivOrPResult.GetPreviousNode()->IsElement()) {
|
|
rv = InsertBRElementIfEmptyBlockElement(
|
|
MOZ_KnownLive(*splitDivOrPResult.GetPreviousNode()->AsElement()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementIfEmptyBlockElement() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
if (splitDivOrPResult.GetNextNode()->IsElement()) {
|
|
rv = InsertBRElementIfEmptyBlockElement(
|
|
MOZ_KnownLive(*splitDivOrPResult.GetNextNode()->AsElement()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementIfEmptyBlockElement() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// selection to beginning of right hand para;
|
|
// look inside any containers that are up front.
|
|
nsCOMPtr<nsIContent> child = GetLeftmostChild(&aParentDivOrP, true);
|
|
if (child && (child->IsText() || HTMLEditUtils::IsContainerNode(*child))) {
|
|
nsresult rv = CollapseSelectionToStartOf(*child);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed, but ignored");
|
|
} else {
|
|
nsresult rv = CollapseSelectionTo(EditorRawDOMPoint(child));
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed, but ignored");
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::HandleInsertParagraphInListItemElement(Element& aListItem,
|
|
nsINode& aNode,
|
|
int32_t aOffset) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(HTMLEditUtils::IsListItem(&aListItem));
|
|
|
|
// Get the item parent and the active editing host.
|
|
RefPtr<Element> host = GetActiveEditingHost();
|
|
|
|
// If we are in an empty item, then we want to pop up out of the list, but
|
|
// only if prefs say it's okay and if the parent isn't the active editing
|
|
// host.
|
|
if (host != aListItem.GetParentElement() &&
|
|
IsEmptyBlockElement(aListItem, IgnoreSingleBR::Yes)) {
|
|
nsCOMPtr<nsIContent> leftListNode = aListItem.GetParent();
|
|
// Are we the last list item in the list?
|
|
if (!IsLastEditableChild(&aListItem)) {
|
|
// We need to split the list!
|
|
EditorDOMPoint atListItem(&aListItem);
|
|
ErrorResult error;
|
|
leftListNode = SplitNodeWithTransaction(atListItem, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING_ASSERTION(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED),
|
|
"EditorBase::SplitNodeWithTransaction() failed");
|
|
return error.StealNSResult();
|
|
}
|
|
}
|
|
|
|
// Are we in a sublist?
|
|
EditorDOMPoint atNextSiblingOfLeftList(leftListNode);
|
|
DebugOnly<bool> advanced = atNextSiblingOfLeftList.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset after the right list node");
|
|
if (HTMLEditUtils::IsList(atNextSiblingOfLeftList.GetContainer())) {
|
|
// If so, move item out of this list and into the grandparent list
|
|
nsresult rv = MoveNodeWithTransaction(aListItem, atNextSiblingOfLeftList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
rv = CollapseSelectionToStartOf(aListItem);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Otherwise kill this item
|
|
nsresult rv = DeleteNodeWithTransaction(aListItem);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Time to insert a paragraph
|
|
nsStaticAtom& paraAtom = DefaultParagraphSeparatorTagName();
|
|
// We want a wrapper even if we separate with <br>
|
|
RefPtr<Element> pOrDivElement = CreateNodeWithTransaction(
|
|
¶Atom == nsGkAtoms::br ? *nsGkAtoms::p : MOZ_KnownLive(paraAtom),
|
|
atNextSiblingOfLeftList);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!pOrDivElement) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Append a <br> to it
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(EditorDOMPoint(pOrDivElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Set selection to before the break
|
|
rv = CollapseSelectionToStartOf(*pOrDivElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Else we want a new list item at the same list level. Get ws code to
|
|
// adjust any ws.
|
|
nsCOMPtr<nsINode> selNode = &aNode;
|
|
nsresult rv = WSRunObject::PrepareToSplitAcrossBlocks(
|
|
*this, address_of(selNode), &aOffset);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WSRunObject::PrepareToSplitAcrossBlocks() failed");
|
|
return rv;
|
|
}
|
|
if (!selNode->IsContent()) {
|
|
NS_WARNING(
|
|
"WSRunObject::PrepareToSplitAcrossBlocks() returned document node or "
|
|
"something non-content node");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Now split the list item.
|
|
SplitNodeResult splitListItemResult =
|
|
SplitNodeDeepWithTransaction(aListItem, EditorDOMPoint(selNode, aOffset),
|
|
SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
splitListItemResult.Succeeded(),
|
|
"EditorBase::SplitNodeDeepWithTransaction() failed, but ignored");
|
|
|
|
// Hack: until I can change the damaged doc range code back to being
|
|
// extra-inclusive, I have to manually detect certain list items that may be
|
|
// left empty.
|
|
nsCOMPtr<nsIContent> prevItem = GetPriorHTMLSibling(&aListItem);
|
|
if (prevItem && HTMLEditUtils::IsListItem(prevItem)) {
|
|
if (IsEmptyNode(*prevItem)) {
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(
|
|
EditorDOMPoint(prevItem, 0));
|
|
if (createPaddingBRResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction("
|
|
") failed");
|
|
return createPaddingBRResult.Rv();
|
|
}
|
|
} else {
|
|
if (IsEmptyNode(aListItem, true)) {
|
|
if (aListItem.IsAnyOfHTMLElements(nsGkAtoms::dd, nsGkAtoms::dt)) {
|
|
nsCOMPtr<nsINode> list = aListItem.GetParentNode();
|
|
int32_t itemOffset = list ? list->ComputeIndexOf(&aListItem) : -1;
|
|
|
|
nsStaticAtom* nextDefinitionListItemTagName =
|
|
aListItem.IsHTMLElement(nsGkAtoms::dt) ? nsGkAtoms::dd
|
|
: nsGkAtoms::dt;
|
|
MOZ_DIAGNOSTIC_ASSERT(itemOffset != -1);
|
|
EditorDOMPoint atNextListItem(list, aListItem.GetNextSibling(),
|
|
itemOffset + 1);
|
|
RefPtr<Element> newListItem = CreateNodeWithTransaction(
|
|
MOZ_KnownLive(*nextDefinitionListItemTagName), atNextListItem);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!newListItem) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = DeleteNodeWithTransaction(aListItem);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
rv = CollapseSelectionToStartOf(*newListItem);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
RefPtr<Element> brElement;
|
|
nsresult rv = CopyLastEditableChildStylesWithTransaction(
|
|
MOZ_KnownLive(*prevItem->AsElement()), aListItem,
|
|
address_of(brElement));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CopyLastEditableChildStylesWithTransaction() "
|
|
"failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (brElement) {
|
|
EditorRawDOMPoint atBRNode(brElement);
|
|
if (NS_WARN_IF(!atBRNode.IsSetAndValid())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = CollapseSelectionTo(atBRNode);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
} else {
|
|
WSScanResult forwardScanFromStartOfListItemResult =
|
|
WSRunScanner::ScanNextVisibleNodeOrBlockBoundary(
|
|
*this, EditorRawDOMPoint(&aListItem, 0));
|
|
if (forwardScanFromStartOfListItemResult.ReachedSpecialContent() ||
|
|
forwardScanFromStartOfListItemResult.ReachedBRElement() ||
|
|
forwardScanFromStartOfListItemResult.ReachedHRElement()) {
|
|
EditorRawDOMPoint atFoundElement(
|
|
forwardScanFromStartOfListItemResult.RawPointAtContent());
|
|
if (NS_WARN_IF(!atFoundElement.IsSetAndValid())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = CollapseSelectionTo(atFoundElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
// XXX This may be not meaningful position if it reached block element
|
|
// in aListItem.
|
|
nsresult rv = CollapseSelectionTo(
|
|
forwardScanFromStartOfListItemResult.RawPoint());
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
rv = CollapseSelectionToStartOf(aListItem);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::MoveNodesIntoNewBlockquoteElement(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
// The idea here is to put the nodes into a minimal number of blockquotes.
|
|
// When the user blockquotes something, they expect one blockquote. That
|
|
// may not be possible (for instance, if they have two table cells selected,
|
|
// you need two blockquotes inside the cells).
|
|
RefPtr<Element> curBlock;
|
|
nsCOMPtr<nsINode> prevParent;
|
|
|
|
for (auto& content : aArrayOfContents) {
|
|
// If the node is a table element or list item, dive inside
|
|
if (HTMLEditUtils::IsTableElementButNotTable(content) ||
|
|
HTMLEditUtils::IsListItem(content)) {
|
|
// Forget any previous block
|
|
curBlock = nullptr;
|
|
// Recursion time
|
|
AutoTArray<OwningNonNull<nsIContent>, 24> childContents;
|
|
HTMLEditor::GetChildNodesOf(*content, childContents);
|
|
nsresult rv = MoveNodesIntoNewBlockquoteElement(childContents);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::MoveNodesIntoNewBlockquoteElement() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// If the node has different parent than previous node, further nodes in a
|
|
// new parent
|
|
if (prevParent) {
|
|
if (prevParent != content->GetParentNode()) {
|
|
// Forget any previous blockquote node we were using
|
|
curBlock = nullptr;
|
|
prevParent = content->GetParentNode();
|
|
}
|
|
} else {
|
|
prevParent = content->GetParentNode();
|
|
}
|
|
|
|
// If no curBlock, make one
|
|
if (!curBlock) {
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::blockquote,
|
|
EditorDOMPoint(content));
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms:"
|
|
":blockquote) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
// XXX Perhaps, we should insert the new `<blockquote>` element after
|
|
// moving all nodes into it since the movement does not cause
|
|
// running mutation event listeners.
|
|
curBlock = CreateNodeWithTransaction(*nsGkAtoms::blockquote,
|
|
splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curBlock) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::blockquote) "
|
|
"failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curBlock;
|
|
// note: doesn't matter if we set mNewBlockElement multiple times.
|
|
}
|
|
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to/ keep it alive.
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *curBlock);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::RemoveBlockContainerElements(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// Intent of this routine is to be used for converting to/from headers,
|
|
// paragraphs, pre, and address. Those blocks that pretty much just contain
|
|
// inline things...
|
|
RefPtr<Element> blockElement;
|
|
nsCOMPtr<nsIContent> firstContent, lastContent;
|
|
for (auto& content : aArrayOfContents) {
|
|
// If curNode is an <address>, <p>, <hn>, or <pre>, remove it.
|
|
if (HTMLEditUtils::IsFormatNode(content)) {
|
|
// Process any partial progress saved
|
|
if (blockElement) {
|
|
SplitRangeOffFromNodeResult removeMiddleContainerResult =
|
|
SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
*blockElement, *firstContent, *lastContent);
|
|
if (removeMiddleContainerResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer() "
|
|
"failed");
|
|
return removeMiddleContainerResult.Rv();
|
|
}
|
|
firstContent = lastContent = blockElement = nullptr;
|
|
}
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
// Remove current block
|
|
nsresult rv = RemoveBlockContainerWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// XXX How about, <th>, <thead>, <tfoot>, <dt>, <dl>?
|
|
if (content->IsAnyOfHTMLElements(
|
|
nsGkAtoms::table, nsGkAtoms::tr, nsGkAtoms::tbody, nsGkAtoms::td,
|
|
nsGkAtoms::li, nsGkAtoms::blockquote, nsGkAtoms::div) ||
|
|
HTMLEditUtils::IsList(content)) {
|
|
// Process any partial progress saved
|
|
if (blockElement) {
|
|
SplitRangeOffFromNodeResult removeMiddleContainerResult =
|
|
SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
*blockElement, *firstContent, *lastContent);
|
|
if (removeMiddleContainerResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer() "
|
|
"failed");
|
|
return removeMiddleContainerResult.Rv();
|
|
}
|
|
firstContent = lastContent = blockElement = nullptr;
|
|
}
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
// Recursion time
|
|
AutoTArray<OwningNonNull<nsIContent>, 24> childContents;
|
|
HTMLEditor::GetChildNodesOf(*content, childContents);
|
|
nsresult rv = RemoveBlockContainerElements(childContents);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveBlockContainerElements() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsInlineElement(content)) {
|
|
if (blockElement) {
|
|
// If so, is this node a descendant?
|
|
if (EditorUtils::IsDescendantOf(*content, *blockElement)) {
|
|
// Then we don't need to do anything different for this node
|
|
lastContent = content;
|
|
continue;
|
|
}
|
|
// Otherwise, we have progressed beyond end of blockElement, so let's
|
|
// handle it now. We need to remove the portion of blockElement that
|
|
// contains [firstContent - lastContent].
|
|
SplitRangeOffFromNodeResult removeMiddleContainerResult =
|
|
SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
*blockElement, *firstContent, *lastContent);
|
|
if (removeMiddleContainerResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer() "
|
|
"failed");
|
|
return removeMiddleContainerResult.Rv();
|
|
}
|
|
firstContent = lastContent = blockElement = nullptr;
|
|
// Fall out and handle content
|
|
}
|
|
blockElement = HTMLEditUtils::GetAncestorBlockElement(content);
|
|
if (!blockElement || !HTMLEditUtils::IsFormatNode(blockElement) ||
|
|
!EditorUtils::IsEditableContent(*blockElement, EditorType::HTML)) {
|
|
// Not a block kind that we care about.
|
|
blockElement = nullptr;
|
|
} else {
|
|
firstContent = lastContent = content;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (blockElement) {
|
|
// Some node that is already sans block style. Skip over it and process
|
|
// any partial progress saved.
|
|
SplitRangeOffFromNodeResult removeMiddleContainerResult =
|
|
SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
*blockElement, *firstContent, *lastContent);
|
|
if (removeMiddleContainerResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer() "
|
|
"failed");
|
|
return removeMiddleContainerResult.Rv();
|
|
}
|
|
firstContent = lastContent = blockElement = nullptr;
|
|
continue;
|
|
}
|
|
}
|
|
// Process any partial progress saved
|
|
if (blockElement) {
|
|
SplitRangeOffFromNodeResult removeMiddleContainerResult =
|
|
SplitRangeOffFromBlockAndRemoveMiddleContainer(
|
|
*blockElement, *firstContent, *lastContent);
|
|
if (removeMiddleContainerResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitRangeOffFromBlockAndRemoveMiddleContainer() "
|
|
"failed");
|
|
return removeMiddleContainerResult.Rv();
|
|
}
|
|
firstContent = lastContent = blockElement = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::CreateOrChangeBlockContainerElement(
|
|
nsTArray<OwningNonNull<nsIContent>>& aArrayOfContents, nsAtom& aBlockTag) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
// Intent of this routine is to be used for converting to/from headers,
|
|
// paragraphs, pre, and address. Those blocks that pretty much just contain
|
|
// inline things...
|
|
nsCOMPtr<Element> newBlock;
|
|
nsCOMPtr<Element> curBlock;
|
|
for (auto& content : aArrayOfContents) {
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsInContentNode())) {
|
|
// If given node has been removed from the document, let's ignore it
|
|
// since the following code may need its parent replace it with new
|
|
// block.
|
|
curBlock = nullptr;
|
|
newBlock = nullptr;
|
|
continue;
|
|
}
|
|
|
|
// Is it already the right kind of block, or an uneditable block?
|
|
if (content->IsHTMLElement(&aBlockTag) ||
|
|
(!EditorUtils::IsEditableContent(content, EditorType::HTML) &&
|
|
HTMLEditUtils::IsBlockElement(content))) {
|
|
// Forget any previous block used for previous inline nodes
|
|
curBlock = nullptr;
|
|
// Do nothing to this block
|
|
continue;
|
|
}
|
|
|
|
// If content is a address, p, header, address, or pre, replace it with a
|
|
// new block of correct type.
|
|
// XXX: pre can't hold everything the others can
|
|
if (HTMLEditUtils::IsMozDiv(content) ||
|
|
HTMLEditUtils::IsFormatNode(content)) {
|
|
// Forget any previous block used for previous inline nodes
|
|
curBlock = nullptr;
|
|
newBlock = ReplaceContainerAndCloneAttributesWithTransaction(
|
|
MOZ_KnownLive(*content->AsElement()), aBlockTag);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!newBlock) {
|
|
NS_WARNING(
|
|
"EditorBase::ReplaceContainerAndCloneAttributesWithTransaction() "
|
|
"failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If the new block element was moved to different element or removed by
|
|
// the web app via mutation event listener, we should stop handling this
|
|
// action since we cannot handle each of a lot of edge cases.
|
|
if (NS_WARN_IF(newBlock->GetParentNode() != atContent.GetContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsTable(content) || HTMLEditUtils::IsList(content) ||
|
|
content->IsAnyOfHTMLElements(nsGkAtoms::tbody, nsGkAtoms::tr,
|
|
nsGkAtoms::td, nsGkAtoms::li,
|
|
nsGkAtoms::blockquote, nsGkAtoms::div)) {
|
|
// Forget any previous block used for previous inline nodes
|
|
curBlock = nullptr;
|
|
// Recursion time
|
|
AutoTArray<OwningNonNull<nsIContent>, 24> childContents;
|
|
HTMLEditor::GetChildNodesOf(*content, childContents);
|
|
if (!childContents.IsEmpty()) {
|
|
nsresult rv =
|
|
CreateOrChangeBlockContainerElement(childContents, aBlockTag);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::CreateOrChangeBlockContainerElement() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Make sure we can put a block here
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(aBlockTag, atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
// If current handling node has been moved from the container by a
|
|
// mutation event listener when we need to do something more for it,
|
|
// we should stop handling this action since we cannot handle each of
|
|
// a lot of edge cases.
|
|
if (NS_WARN_IF(atContent.HasChildMovedFromContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
EditorDOMPoint splitPoint = splitNodeResult.SplitPoint();
|
|
RefPtr<Element> theBlock =
|
|
CreateNodeWithTransaction(aBlockTag, splitPoint);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!theBlock) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If the new block element was moved to different element or removed by
|
|
// the web app via mutation event listener, we should stop handling this
|
|
// action since we cannot handle each of a lot of edge cases.
|
|
if (NS_WARN_IF(theBlock->GetParentNode() != splitPoint.GetContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = std::move(theBlock);
|
|
continue;
|
|
}
|
|
|
|
if (content->IsHTMLElement(nsGkAtoms::br)) {
|
|
// If the node is a break, we honor it by putting further nodes in a new
|
|
// parent
|
|
if (curBlock) {
|
|
// Forget any previous block used for previous inline nodes
|
|
curBlock = nullptr;
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to keep it
|
|
// alive.
|
|
nsresult rv = DeleteNodeWithTransaction(MOZ_KnownLive(*content));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// The break is the first (or even only) node we encountered. Create a
|
|
// block for it.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(aBlockTag, atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
// If current handling node has been moved from the container by a
|
|
// mutation event listener when we need to do something more for it,
|
|
// we should stop handling this action since we cannot handle each of
|
|
// a lot of edge cases.
|
|
if (NS_WARN_IF(atContent.HasChildMovedFromContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
EditorDOMPoint splitPoint = splitNodeResult.SplitPoint();
|
|
curBlock = CreateNodeWithTransaction(aBlockTag, splitPoint);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curBlock) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If the new block element was moved to different element or removed by
|
|
// the web app via mutation event listener, we should stop handling this
|
|
// action since we cannot handle each of a lot of edge cases.
|
|
if (NS_WARN_IF(curBlock->GetParentNode() != splitPoint.GetContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curBlock;
|
|
// Note: doesn't matter if we set mNewBlockElement multiple times.
|
|
//
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to keep it
|
|
// alive.
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *curBlock);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsInlineElement(content)) {
|
|
// If content is inline, pull it into curBlock. Note: it's assumed that
|
|
// consecutive inline nodes in aNodeArray are actually members of the
|
|
// same block parent. This happens to be true now as a side effect of
|
|
// how aNodeArray is contructed, but some additional logic should be
|
|
// added here if that should change
|
|
//
|
|
// If content is a non editable, drop it if we are going to <pre>.
|
|
if (&aBlockTag == nsGkAtoms::pre &&
|
|
!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
// Do nothing to this block
|
|
continue;
|
|
}
|
|
|
|
// If no curBlock, make one
|
|
if (!curBlock) {
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(aBlockTag, atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() "
|
|
"failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
// If current handling node has been moved from the container by a
|
|
// mutation event listener when we need to do something more for it,
|
|
// we should stop handling this action since we cannot handle each of
|
|
// a lot of edge cases.
|
|
if (NS_WARN_IF(atContent.HasChildMovedFromContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
EditorDOMPoint splitPoint = splitNodeResult.SplitPoint();
|
|
curBlock = CreateNodeWithTransaction(aBlockTag, splitPoint);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!curBlock) {
|
|
NS_WARNING("EditorBase::CreateNodeWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If the new block element was moved to different element or removed
|
|
// by the web app via mutation event listener, we should stop handling
|
|
// this action since we cannot handle each of a lot of edge cases.
|
|
if (NS_WARN_IF(curBlock->GetParentNode() !=
|
|
splitPoint.GetContainer())) {
|
|
return NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE;
|
|
}
|
|
|
|
// Update container of content.
|
|
atContent.Set(content);
|
|
|
|
// Remember our new block for postprocessing
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = curBlock;
|
|
// Note: doesn't matter if we set mNewBlockElement multiple times.
|
|
}
|
|
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
// This is possible due to mutation events, let's not assert
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// XXX If content is a br, replace it with a return if going to <pre>
|
|
|
|
// This is a continuation of some inline nodes that belong together in
|
|
// the same block item. Use curBlock.
|
|
//
|
|
// MOZ_KnownLive because 'aArrayOfContents' is guaranteed to keep it
|
|
// alive. We could try to make that a rvalue ref and create a const array
|
|
// on the stack here, but callers are passing in auto arrays, and we don't
|
|
// want to introduce copies..
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *curBlock);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
SplitNodeResult HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(
|
|
nsAtom& aTag, const EditorDOMPoint& aStartOfDeepestRightNode) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(!aStartOfDeepestRightNode.IsSet())) {
|
|
return SplitNodeResult(NS_ERROR_INVALID_ARG);
|
|
}
|
|
MOZ_ASSERT(aStartOfDeepestRightNode.IsSetAndValid());
|
|
|
|
RefPtr<Element> host = GetActiveEditingHost();
|
|
if (NS_WARN_IF(!host)) {
|
|
return SplitNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// The point must be descendant of editing host.
|
|
if (aStartOfDeepestRightNode.GetContainer() != host &&
|
|
!EditorUtils::IsDescendantOf(*aStartOfDeepestRightNode.GetContainer(),
|
|
*host)) {
|
|
NS_WARNING("aStartOfDeepestRightNode was not in editing host");
|
|
return SplitNodeResult(NS_ERROR_INVALID_ARG);
|
|
}
|
|
|
|
// Look for a node that can legally contain the tag.
|
|
EditorDOMPoint pointToInsert(aStartOfDeepestRightNode);
|
|
for (; pointToInsert.IsSet();
|
|
pointToInsert.Set(pointToInsert.GetContainer())) {
|
|
// We cannot split active editing host and its ancestor. So, there is
|
|
// no element to contain the specified element.
|
|
if (pointToInsert.GetChild() == host) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction() reached "
|
|
"editing host");
|
|
return SplitNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
if (HTMLEditUtils::CanNodeContain(*pointToInsert.GetContainer(), aTag)) {
|
|
// Found an ancestor node which can contain the element.
|
|
break;
|
|
}
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(pointToInsert.IsSet());
|
|
|
|
// If the point itself can contain the tag, we don't need to split any
|
|
// ancestor nodes. In this case, we should return the given split point
|
|
// as is.
|
|
if (pointToInsert.GetContainer() == aStartOfDeepestRightNode.GetContainer()) {
|
|
return SplitNodeResult(aStartOfDeepestRightNode);
|
|
}
|
|
|
|
SplitNodeResult splitNodeResult = SplitNodeDeepWithTransaction(
|
|
MOZ_KnownLive(*pointToInsert.GetChild()), aStartOfDeepestRightNode,
|
|
SplitAtEdges::eAllowToCreateEmptyContainer);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return SplitNodeResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(splitNodeResult.Succeeded(),
|
|
"EditorBase::SplitNodeDeepWithTransaction(SplitAtEdges::"
|
|
"eAllowToCreateEmptyContainer) failed");
|
|
return splitNodeResult;
|
|
}
|
|
|
|
nsresult HTMLEditor::JoinNearestEditableNodesWithTransaction(
|
|
nsIContent& aNodeLeft, nsIContent& aNodeRight,
|
|
EditorDOMPoint* aNewFirstChildOfRightNode) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aNewFirstChildOfRightNode);
|
|
|
|
// Caller responsible for left and right node being the same type
|
|
if (NS_WARN_IF(!aNodeLeft.GetParentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If they don't have the same parent, first move the right node to after
|
|
// the left one
|
|
if (aNodeLeft.GetParentNode() != aNodeRight.GetParentNode()) {
|
|
nsresult rv =
|
|
MoveNodeWithTransaction(aNodeRight, EditorDOMPoint(&aNodeLeft));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
EditorDOMPoint ret(&aNodeRight, aNodeLeft.Length());
|
|
|
|
// Separate join rules for differing blocks
|
|
if (HTMLEditUtils::IsList(&aNodeLeft) || aNodeLeft.IsText()) {
|
|
// For lists, merge shallow (wouldn't want to combine list items)
|
|
nsresult rv = JoinNodesWithTransaction(aNodeLeft, aNodeRight);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::JoinNodesWithTransaction failed");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// XXX `ret` may point invalid point if mutation event listener changed
|
|
// the previous siblings...
|
|
*aNewFirstChildOfRightNode = std::move(ret);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
// Remember the last left child, and first right child
|
|
nsCOMPtr<nsIContent> lastLeft = GetLastEditableChild(aNodeLeft);
|
|
if (NS_WARN_IF(!lastLeft)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> firstRight = GetFirstEditableChild(aNodeRight);
|
|
if (NS_WARN_IF(!firstRight)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// For list items, divs, etc., merge smart
|
|
nsresult rv = JoinNodesWithTransaction(aNodeLeft, aNodeRight);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::JoinNodesWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
if ((lastLeft->IsText() || lastLeft->IsElement()) &&
|
|
HTMLEditUtils::CanContentsBeJoined(*lastLeft, *firstRight,
|
|
StyleDifference::CompareIfElements)) {
|
|
nsresult rv = JoinNearestEditableNodesWithTransaction(
|
|
*lastLeft, *firstRight, aNewFirstChildOfRightNode);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::JoinNearestEditableNodesWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
// XXX `ret` may point invalid point if mutation event listener changed
|
|
// the previous siblings...
|
|
*aNewFirstChildOfRightNode = std::move(ret);
|
|
return NS_OK;
|
|
}
|
|
|
|
Element* HTMLEditor::GetMostAncestorMailCiteElement(nsINode& aNode) const {
|
|
Element* mailCiteElement = nullptr;
|
|
bool isPlaintextEditor = IsPlaintextEditor();
|
|
for (nsINode* node = &aNode; node; node = node->GetParentNode()) {
|
|
if ((isPlaintextEditor && node->IsHTMLElement(nsGkAtoms::pre)) ||
|
|
HTMLEditUtils::IsMailCite(node)) {
|
|
mailCiteElement = node->AsElement();
|
|
}
|
|
if (node->IsHTMLElement(nsGkAtoms::body)) {
|
|
break;
|
|
}
|
|
}
|
|
return mailCiteElement;
|
|
}
|
|
|
|
nsresult HTMLEditor::CacheInlineStyles(nsIContent& aContent) {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
nsresult rv = GetInlineStyles(
|
|
aContent, *TopLevelEditSubActionDataRef().mCachedInlineStyles);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::GetInlineStyles() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::GetInlineStyles(nsIContent& aContent,
|
|
AutoStyleCacheArray& aStyleCacheArray) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aStyleCacheArray.IsEmpty());
|
|
|
|
bool useCSS = IsCSSEnabled();
|
|
|
|
for (nsStaticAtom* property :
|
|
{nsGkAtoms::b, nsGkAtoms::i, nsGkAtoms::u, nsGkAtoms::face,
|
|
nsGkAtoms::size, nsGkAtoms::color, nsGkAtoms::tt, nsGkAtoms::em,
|
|
nsGkAtoms::strong, nsGkAtoms::dfn, nsGkAtoms::code, nsGkAtoms::samp,
|
|
nsGkAtoms::var, nsGkAtoms::cite, nsGkAtoms::abbr, nsGkAtoms::acronym,
|
|
nsGkAtoms::backgroundColor, nsGkAtoms::sub, nsGkAtoms::sup}) {
|
|
nsStaticAtom *tag, *attribute;
|
|
if (property == nsGkAtoms::face || property == nsGkAtoms::size ||
|
|
property == nsGkAtoms::color) {
|
|
tag = nsGkAtoms::font;
|
|
attribute = property;
|
|
} else {
|
|
tag = property;
|
|
attribute = nullptr;
|
|
}
|
|
// If type-in state is set, don't intervene
|
|
bool typeInSet, unused;
|
|
mTypeInState->GetTypingState(typeInSet, unused, tag, attribute, nullptr);
|
|
if (typeInSet) {
|
|
continue;
|
|
}
|
|
bool isSet = false;
|
|
nsString value; // Don't use nsAutoString here because it requires memcpy
|
|
// at creating new StyleCache instance.
|
|
// Don't use CSS for <font size>, we don't support it usefully (bug 780035)
|
|
if (!useCSS || (property == nsGkAtoms::size)) {
|
|
isSet = IsTextPropertySetByContent(&aContent, tag, attribute, nullptr,
|
|
&value);
|
|
} else {
|
|
isSet = CSSEditUtils::IsComputedCSSEquivalentToHTMLInlineStyleSet(
|
|
aContent, MOZ_KnownLive(tag), MOZ_KnownLive(attribute), value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
}
|
|
if (isSet) {
|
|
aStyleCacheArray.AppendElement(StyleCache(tag, attribute, value));
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::ReapplyCachedStyles() {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
// The idea here is to examine our cached list of styles and see if any have
|
|
// been removed. If so, add typeinstate for them, so that they will be
|
|
// reinserted when new content is added.
|
|
|
|
if (TopLevelEditSubActionDataRef().mCachedInlineStyles->IsEmpty() ||
|
|
!SelectionRefPtr()->RangeCount()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// remember if we are in css mode
|
|
bool useCSS = IsCSSEnabled();
|
|
|
|
const RangeBoundary& atStartOfSelection =
|
|
SelectionRefPtr()->GetRangeAt(0)->StartRef();
|
|
nsCOMPtr<nsIContent> startContainerContent =
|
|
atStartOfSelection.Container() &&
|
|
atStartOfSelection.Container()->IsContent()
|
|
? atStartOfSelection.Container()->AsContent()
|
|
: nullptr;
|
|
if (NS_WARN_IF(!startContainerContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoStyleCacheArray styleCacheArrayAtInsertionPoint;
|
|
nsresult rv =
|
|
GetInlineStyles(*startContainerContent, styleCacheArrayAtInsertionPoint);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::GetInlineStyles() failed, but ignored");
|
|
return NS_OK;
|
|
}
|
|
|
|
for (StyleCache& styleCacheBeforeEdit :
|
|
*TopLevelEditSubActionDataRef().mCachedInlineStyles) {
|
|
bool isFirst = false, isAny = false, isAll = false;
|
|
nsAutoString currentValue;
|
|
if (useCSS) {
|
|
// check computed style first in css case
|
|
isAny = CSSEditUtils::IsComputedCSSEquivalentToHTMLInlineStyleSet(
|
|
*startContainerContent, MOZ_KnownLive(styleCacheBeforeEdit.Tag()),
|
|
MOZ_KnownLive(styleCacheBeforeEdit.GetAttribute()), currentValue);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
}
|
|
if (!isAny) {
|
|
// then check typeinstate and html style
|
|
nsresult rv = GetInlinePropertyBase(
|
|
MOZ_KnownLive(*styleCacheBeforeEdit.Tag()),
|
|
MOZ_KnownLive(styleCacheBeforeEdit.GetAttribute()),
|
|
&styleCacheBeforeEdit.Value(), &isFirst, &isAny, &isAll,
|
|
¤tValue);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::GetInlinePropertyBase() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
// This style has disappeared through deletion. Let's add the styles to
|
|
// mTypeInState when same style isn't applied to the node already.
|
|
if (isAny && !IsStyleCachePreservingSubAction(GetTopLevelEditSubAction())) {
|
|
continue;
|
|
}
|
|
AutoStyleCacheArray::index_type index =
|
|
styleCacheArrayAtInsertionPoint.IndexOf(
|
|
styleCacheBeforeEdit.Tag(), styleCacheBeforeEdit.GetAttribute());
|
|
if (index == AutoStyleCacheArray::NoIndex ||
|
|
styleCacheBeforeEdit.Value() !=
|
|
styleCacheArrayAtInsertionPoint.ElementAt(index).Value()) {
|
|
mTypeInState->SetProp(styleCacheBeforeEdit.Tag(),
|
|
styleCacheBeforeEdit.GetAttribute(),
|
|
styleCacheBeforeEdit.Value());
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::InsertBRElementToEmptyListItemsAndTableCellsInRange(
|
|
const RawRangeBoundary& aStartRef, const RawRangeBoundary& aEndRef) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoTArray<OwningNonNull<Element>, 64> arrayOfEmptyElements;
|
|
DOMIterator iter;
|
|
if (NS_FAILED(iter.Init(aStartRef, aEndRef))) {
|
|
NS_WARNING("DOMIterator::Init() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
iter.AppendNodesToArray(
|
|
+[](nsINode& aNode, void* aSelf) {
|
|
MOZ_ASSERT(Element::FromNode(&aNode));
|
|
MOZ_ASSERT(aSelf);
|
|
Element* element = aNode.AsElement();
|
|
if (!EditorUtils::IsEditableContent(*element, EditorType::HTML) ||
|
|
(!HTMLEditUtils::IsListItem(element) &&
|
|
!HTMLEditUtils::IsTableCellOrCaption(*element))) {
|
|
return false;
|
|
}
|
|
return static_cast<HTMLEditor*>(aSelf)->IsEmptyNode(*element, false,
|
|
false);
|
|
},
|
|
arrayOfEmptyElements, this);
|
|
|
|
// Put padding <br> elements for empty <li> and <td>.
|
|
for (auto& emptyElement : arrayOfEmptyElements) {
|
|
// Need to put br at END of node. It may have empty containers in it and
|
|
// still pass the "IsEmptyNode" test, and we want the br's to be after
|
|
// them. Also, we want the br to be after the selection if the selection
|
|
// is in this node.
|
|
EditorDOMPoint endOfNode(EditorDOMPoint::AtEndOf(emptyElement));
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(endOfNode);
|
|
if (createPaddingBRResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction() "
|
|
"failed");
|
|
return createPaddingBRResult.Rv();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::EnsureCaretInBlockElement(Element& aElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
|
|
EditorRawDOMPoint atCaret(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Use ranges and RangeUtils::CompareNodeToRange() to compare selection
|
|
// start to new block.
|
|
RefPtr<StaticRange> staticRange =
|
|
StaticRange::Create(atCaret.ToRawRangeBoundary(),
|
|
atCaret.ToRawRangeBoundary(), IgnoreErrors());
|
|
if (!staticRange) {
|
|
NS_WARNING("StaticRange::Create() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool nodeBefore, nodeAfter;
|
|
nsresult rv = RangeUtils::CompareNodeToRange(&aElement, staticRange,
|
|
&nodeBefore, &nodeAfter);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("RangeUtils::CompareNodeToRange() failed");
|
|
return rv;
|
|
}
|
|
|
|
if (nodeBefore && nodeAfter) {
|
|
return NS_OK; // selection is inside block
|
|
}
|
|
|
|
if (nodeBefore) {
|
|
// selection is after block. put at end of block.
|
|
nsIContent* lastEditableContent = GetLastEditableChild(aElement);
|
|
if (!lastEditableContent) {
|
|
lastEditableContent = &aElement;
|
|
}
|
|
EditorRawDOMPoint endPoint;
|
|
if (lastEditableContent->IsText() ||
|
|
HTMLEditUtils::IsContainerNode(*lastEditableContent)) {
|
|
endPoint.SetToEndOf(lastEditableContent);
|
|
} else {
|
|
endPoint.SetAfter(lastEditableContent);
|
|
if (NS_WARN_IF(!endPoint.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
nsresult rv = CollapseSelectionTo(endPoint);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
// selection is before block. put at start of block.
|
|
nsIContent* firstEditableContent = GetFirstEditableChild(aElement);
|
|
if (!firstEditableContent) {
|
|
firstEditableContent = &aElement;
|
|
}
|
|
EditorRawDOMPoint atStartOfBlock;
|
|
if (firstEditableContent->IsText() ||
|
|
HTMLEditUtils::IsContainerNode(*firstEditableContent)) {
|
|
atStartOfBlock.Set(firstEditableContent);
|
|
} else {
|
|
atStartOfBlock.Set(firstEditableContent, 0);
|
|
}
|
|
rv = CollapseSelectionTo(atStartOfBlock);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
void HTMLEditor::SetSelectionInterlinePosition() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
|
|
// Get the (collapsed) selection location
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return;
|
|
}
|
|
|
|
EditorDOMPoint atCaret(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
return;
|
|
}
|
|
MOZ_ASSERT(atCaret.IsSetAndValid());
|
|
|
|
// First, let's check to see if we are after a `<br>`. We take care of this
|
|
// special-case first so that we don't accidentally fall through into one of
|
|
// the other conditionals.
|
|
// XXX Although I don't understand "interline position", if caret is
|
|
// immediately after non-editable contents, but previous editable
|
|
// content is `<br>`, does this do right thing?
|
|
if (nsIContent* previousEditableContentInBlock =
|
|
GetPreviousEditableHTMLNodeInBlock(atCaret)) {
|
|
if (previousEditableContentInBlock->IsHTMLElement(nsGkAtoms::br)) {
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!atCaret.GetChild()) {
|
|
return;
|
|
}
|
|
|
|
// If caret is immediately after a block, set interline position to "right".
|
|
// XXX Although I don't understand "interline position", if caret is
|
|
// immediately after non-editable contents, but previous editable
|
|
// content is a block, does this do right thing?
|
|
if (nsIContent* previousEditableContentInBlockAtCaret =
|
|
GetPriorHTMLSibling(atCaret.GetChild())) {
|
|
if (HTMLEditUtils::IsBlockElement(*previousEditableContentInBlockAtCaret)) {
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If caret is immediately before a block, set interline position to "left".
|
|
// XXX Although I don't understand "interline position", if caret is
|
|
// immediately before non-editable contents, but next editable
|
|
// content is a block, does this do right thing?
|
|
if (nsIContent* nextEditableContentInBlockAtCaret =
|
|
GetNextHTMLSibling(atCaret.GetChild())) {
|
|
if (HTMLEditUtils::IsBlockElement(*nextEditableContentInBlockAtCaret)) {
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(false, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(false) failed, but ignored");
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult HTMLEditor::AdjustCaretPositionAndEnsurePaddingBRElement(
|
|
nsIEditor::EDirection aDirectionAndAmount) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(SelectionRefPtr()->IsCollapsed());
|
|
|
|
EditorDOMPoint point(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!point.IsInContentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If selection start is not editable, climb up the tree until editable one.
|
|
while (!EditorUtils::IsEditableContent(*point.ContainerAsContent(),
|
|
EditorType::HTML)) {
|
|
point.Set(point.GetContainer());
|
|
if (NS_WARN_IF(!point.IsInContentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
// If caret is in empty block element, we need to insert a `<br>` element
|
|
// because the block should have one-line height.
|
|
if (RefPtr<Element> blockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*point.ContainerAsContent())) {
|
|
if (blockElement &&
|
|
EditorUtils::IsEditableContent(*blockElement, EditorType::HTML) &&
|
|
IsEmptyNode(*blockElement, false, false) &&
|
|
HTMLEditUtils::CanNodeContain(*point.GetContainer(), *nsGkAtoms::br)) {
|
|
Element* bodyOrDocumentElement = GetRoot();
|
|
if (NS_WARN_IF(!bodyOrDocumentElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (point.GetContainer() == bodyOrDocumentElement) {
|
|
// Our root node is completely empty. Don't add a <br> here.
|
|
// AfterEditInner() will add one for us when it calls
|
|
// TextEditor::MaybeCreatePaddingBRElementForEmptyEditor().
|
|
// XXX This kind of dependency between methods makes us spaghetti.
|
|
// Let's handle it here later.
|
|
// XXX This looks odd check. If active editing host is not a
|
|
// `<body>`, what are we doing?
|
|
return NS_OK;
|
|
}
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(point);
|
|
NS_WARNING_ASSERTION(
|
|
createPaddingBRResult.Succeeded(),
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction() "
|
|
"failed");
|
|
return createPaddingBRResult.Rv();
|
|
}
|
|
}
|
|
|
|
// XXX Perhaps, we should do something if we're in a data node but not
|
|
// a text node.
|
|
if (point.IsInTextNode()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Do we need to insert a padding <br> element for empty last line? We do
|
|
// if we are:
|
|
// 1) prior node is in same block where selection is AND
|
|
// 2) prior node is a br AND
|
|
// 3) that br is not visible
|
|
|
|
if (nsCOMPtr<nsIContent> previousEditableContent =
|
|
GetPreviousEditableHTMLNode(point)) {
|
|
RefPtr<Element> blockElementAtCaret =
|
|
HTMLEditUtils::GetInclusiveAncestorBlockElement(
|
|
*point.ContainerAsContent());
|
|
RefPtr<Element> blockElementParentAtPreviousEditableContent =
|
|
HTMLEditUtils::GetAncestorBlockElement(*previousEditableContent);
|
|
// If previous editable content of caret is in same block and a `<br>`
|
|
// element, we need to adjust interline position.
|
|
if (blockElementAtCaret &&
|
|
blockElementAtCaret == blockElementParentAtPreviousEditableContent &&
|
|
previousEditableContent &&
|
|
previousEditableContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
// If it's an invisible `<br>` element, we need to insert a padding
|
|
// `<br>` element for making empty line have one-line height.
|
|
if (!IsVisibleBRElement(previousEditableContent)) {
|
|
CreateElementResult createPaddingBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(point);
|
|
if (createPaddingBRResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::"
|
|
"InsertPaddingBRElementForEmptyLastLineWithTransaction() failed");
|
|
return createPaddingBRResult.Rv();
|
|
}
|
|
point.Set(createPaddingBRResult.GetNewNode());
|
|
// Selection stays *before* padding `<br>` element for empty last
|
|
// line, sticking to it.
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
nsresult rv = CollapseSelectionTo(point);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
// If it's a visible `<br>` element and next editable content is a
|
|
// padding `<br>` element, we need to set interline position.
|
|
else if (nsIContent* nextEditableContentInBlock =
|
|
GetNextEditableHTMLNodeInBlock(*previousEditableContent)) {
|
|
if (EditorUtils::IsPaddingBRElementForEmptyLastLine(
|
|
*nextEditableContentInBlock)) {
|
|
// Make it stick to the padding `<br>` element so that it will be
|
|
// on blank line.
|
|
IgnoredErrorResult ignoredError;
|
|
SelectionRefPtr()->SetInterlinePosition(true, ignoredError);
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"Selection::SetInterlinePosition(true) failed, but ignored");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If previous editable content in same block is `<br>`, text node, `<img>`
|
|
// or `<hr>`, current caret position is fine.
|
|
if (nsIContent* previousEditableContentInBlock =
|
|
GetPreviousEditableHTMLNodeInBlock(point)) {
|
|
if (previousEditableContentInBlock->IsHTMLElement(nsGkAtoms::br) ||
|
|
previousEditableContentInBlock->IsText() ||
|
|
HTMLEditUtils::IsImage(previousEditableContentInBlock) ||
|
|
previousEditableContentInBlock->IsHTMLElement(nsGkAtoms::hr)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
// If next editable content in same block is `<br>`, text node, `<img>` or
|
|
// `<hr>`, current caret position is fine.
|
|
if (nsIContent* nextEditableContentInBlock =
|
|
GetNextEditableHTMLNodeInBlock(point)) {
|
|
if (nextEditableContentInBlock->IsText() ||
|
|
nextEditableContentInBlock->IsAnyOfHTMLElements(
|
|
nsGkAtoms::br, nsGkAtoms::img, nsGkAtoms::hr)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Otherwise, look for a near editable content towards edit action direction.
|
|
|
|
// If there is no editable content, keep current caret position.
|
|
nsIContent* nearEditableContent =
|
|
FindNearEditableContent(point, aDirectionAndAmount);
|
|
if (!nearEditableContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
EditorDOMPoint pointToPutCaret =
|
|
GetGoodCaretPointFor(*nearEditableContent, aDirectionAndAmount);
|
|
if (!pointToPutCaret.IsSet()) {
|
|
NS_WARNING("HTMLEditor::GetGoodCaretPointFor() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = CollapseSelectionTo(pointToPutCaret);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionTo() failed");
|
|
return rv;
|
|
}
|
|
|
|
template <typename PT, typename CT>
|
|
nsIContent* HTMLEditor::FindNearEditableContent(
|
|
const EditorDOMPointBase<PT, CT>& aPoint,
|
|
nsIEditor::EDirection aDirection) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
|
|
nsIContent* editableContent = nullptr;
|
|
if (aDirection == nsIEditor::ePrevious) {
|
|
editableContent = GetPreviousEditableHTMLNode(aPoint);
|
|
if (!editableContent) {
|
|
return nullptr; // Not illegal.
|
|
}
|
|
} else {
|
|
editableContent = GetNextEditableHTMLNode(aPoint);
|
|
if (NS_WARN_IF(!editableContent)) {
|
|
// Perhaps, illegal because the node pointed by aPoint isn't editable
|
|
// and nobody of previous nodes is editable.
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// scan in the right direction until we find an eligible text node,
|
|
// but don't cross any breaks, images, or table elements.
|
|
// XXX This comment sounds odd. editableContent may have already crossed
|
|
// breaks and/or images if they are non-editable.
|
|
while (editableContent && !editableContent->IsText() &&
|
|
!editableContent->IsHTMLElement(nsGkAtoms::br) &&
|
|
!HTMLEditUtils::IsImage(editableContent)) {
|
|
if (aDirection == nsIEditor::ePrevious) {
|
|
editableContent = GetPreviousEditableHTMLNode(*editableContent);
|
|
if (NS_WARN_IF(!editableContent)) {
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
editableContent = GetNextEditableHTMLNode(*editableContent);
|
|
if (NS_WARN_IF(!editableContent)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
// don't cross any table elements
|
|
if (HTMLEditor::NodesInDifferentTableElements(*editableContent,
|
|
*aPoint.GetContainer())) {
|
|
return nullptr;
|
|
}
|
|
|
|
// otherwise, ok, we have found a good spot to put the selection
|
|
return editableContent;
|
|
}
|
|
|
|
// static
|
|
bool HTMLEditor::NodesInDifferentTableElements(nsINode& aNode1,
|
|
nsINode& aNode2) {
|
|
nsINode* parentNode1;
|
|
for (parentNode1 = &aNode1;
|
|
parentNode1 && !HTMLEditUtils::IsTableElement(parentNode1);
|
|
parentNode1 = parentNode1->GetParentNode()) {
|
|
}
|
|
nsINode* parentNode2;
|
|
for (parentNode2 = &aNode2;
|
|
parentNode2 && !HTMLEditUtils::IsTableElement(parentNode2);
|
|
parentNode2 = parentNode2->GetParentNode()) {
|
|
}
|
|
// XXX Despite of the name, this returns true if only one node is in a
|
|
// table related element.
|
|
return parentNode1 != parentNode2;
|
|
}
|
|
|
|
nsresult HTMLEditor::RemoveEmptyNodesIn(nsRange& aRange) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aRange.IsPositioned());
|
|
|
|
// Some general notes on the algorithm used here: the goal is to examine all
|
|
// the nodes in aRange, and remove the empty ones. We do this by
|
|
// using a content iterator to traverse all the nodes in the range, and
|
|
// placing the empty nodes into an array. After finishing the iteration,
|
|
// we delete the empty nodes in the array. (They cannot be deleted as we
|
|
// find them because that would invalidate the iterator.)
|
|
//
|
|
// Since checking to see if a node is empty can be costly for nodes with
|
|
// many descendants, there are some optimizations made. I rely on the fact
|
|
// that the iterator is post-order: it will visit children of a node before
|
|
// visiting the parent node. So if I find that a child node is not empty, I
|
|
// know that its parent is not empty without even checking. So I put the
|
|
// parent on a "skipList" which is just a voidArray of nodes I can skip the
|
|
// empty check on. If I encounter a node on the skiplist, i skip the
|
|
// processing for that node and replace its slot in the skiplist with that
|
|
// node's parent.
|
|
//
|
|
// An interesting idea is to go ahead and regard parent nodes that are NOT
|
|
// on the skiplist as being empty (without even doing the IsEmptyNode check)
|
|
// on the theory that if they weren't empty, we would have encountered a
|
|
// non-empty child earlier and thus put this parent node on the skiplist.
|
|
//
|
|
// Unfortunately I can't use that strategy here, because the range may
|
|
// include some children of a node while excluding others. Thus I could
|
|
// find all the _examined_ children empty, but still not have an empty
|
|
// parent.
|
|
|
|
PostContentIterator postOrderIter;
|
|
nsresult rv = postOrderIter.Init(&aRange);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("PostContentIterator::Init() failed");
|
|
return rv;
|
|
}
|
|
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfEmptyContents,
|
|
arrayOfEmptyCites, skipList;
|
|
|
|
// Check for empty nodes
|
|
for (; !postOrderIter.IsDone(); postOrderIter.Next()) {
|
|
MOZ_ASSERT(postOrderIter.GetCurrentNode()->IsContent());
|
|
|
|
nsIContent* content = postOrderIter.GetCurrentNode()->AsContent();
|
|
nsIContent* parentContent = content->GetParent();
|
|
|
|
size_t idx = skipList.IndexOf(content);
|
|
if (idx != skipList.NoIndex) {
|
|
// This node is on our skip list. Skip processing for this node, and
|
|
// replace its value in the skip list with the value of its parent
|
|
if (parentContent) {
|
|
skipList[idx] = parentContent;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
bool isCandidate = false;
|
|
bool isMailCite = false;
|
|
if (content->IsElement()) {
|
|
if (content->IsHTMLElement(nsGkAtoms::body)) {
|
|
// Don't delete the body
|
|
} else if ((isMailCite = HTMLEditUtils::IsMailCite(content)) ||
|
|
content->IsHTMLElement(nsGkAtoms::a) ||
|
|
HTMLEditUtils::IsInlineStyle(content) ||
|
|
HTMLEditUtils::IsList(content) ||
|
|
content->IsHTMLElement(nsGkAtoms::div)) {
|
|
// Only consider certain nodes to be empty for purposes of removal
|
|
isCandidate = true;
|
|
} else if (HTMLEditUtils::IsFormatNode(content) ||
|
|
HTMLEditUtils::IsListItem(content) ||
|
|
content->IsHTMLElement(nsGkAtoms::blockquote)) {
|
|
// These node types are candidates if selection is not in them. If
|
|
// it is one of these, don't delete if selection inside. This is so
|
|
// we can create empty headings, etc., for the user to type into.
|
|
isCandidate = !StartOrEndOfSelectionRangesIsIn(*content);
|
|
}
|
|
}
|
|
|
|
bool isEmptyNode = false;
|
|
if (isCandidate) {
|
|
// We delete mailcites even if they have a solo br in them. Other
|
|
// nodes we require to be empty.
|
|
isEmptyNode = IsEmptyNode(*content, isMailCite, true);
|
|
if (isEmptyNode) {
|
|
if (isMailCite) {
|
|
// mailcites go on a separate list from other empty nodes
|
|
arrayOfEmptyCites.AppendElement(*content);
|
|
} else {
|
|
arrayOfEmptyContents.AppendElement(*content);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!isEmptyNode && parentContent) {
|
|
// put parent on skip list
|
|
skipList.AppendElement(*parentContent);
|
|
}
|
|
}
|
|
|
|
// now delete the empty nodes
|
|
for (OwningNonNull<nsIContent>& emptyContent : arrayOfEmptyContents) {
|
|
// XXX Shouldn't we check whether it's removable from its parent??
|
|
if (HTMLEditUtils::IsSimplyEditableNode(emptyContent)) {
|
|
// MOZ_KnownLive because 'arrayOfEmptyContents' is guaranteed to keep it
|
|
// alive.
|
|
rv = DeleteNodeWithTransaction(MOZ_KnownLive(emptyContent));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now delete the empty mailcites. This is a separate step because we want
|
|
// to pull out any br's and preserve them.
|
|
for (OwningNonNull<nsIContent>& emptyCite : arrayOfEmptyCites) {
|
|
if (!IsEmptyNode(emptyCite, false, true)) {
|
|
// We are deleting a cite that has just a `<br>`. We want to delete cite,
|
|
// but preserve `<br>`.
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(EditorDOMPoint(emptyCite));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!brElement) {
|
|
NS_WARNING("HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
// MOZ_KnownLive because 'arrayOfEmptyCites' is guaranteed to keep it alive.
|
|
rv = DeleteNodeWithTransaction(MOZ_KnownLive(emptyCite));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool HTMLEditor::StartOrEndOfSelectionRangesIsIn(nsIContent& aContent) const {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
for (uint32_t i = 0; i < SelectionRefPtr()->RangeCount(); ++i) {
|
|
nsRange* range = SelectionRefPtr()->GetRangeAt(i);
|
|
nsINode* startContainer = range->GetStartContainer();
|
|
if (startContainer) {
|
|
if (&aContent == startContainer) {
|
|
return true;
|
|
}
|
|
if (EditorUtils::IsDescendantOf(*startContainer, aContent)) {
|
|
return true;
|
|
}
|
|
}
|
|
nsINode* endContainer = range->GetEndContainer();
|
|
if (startContainer == endContainer) {
|
|
continue;
|
|
}
|
|
if (endContainer) {
|
|
if (&aContent == endContainer) {
|
|
return true;
|
|
}
|
|
if (EditorUtils::IsDescendantOf(*endContainer, aContent)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsresult HTMLEditor::LiftUpListItemElement(
|
|
Element& aListItemElement,
|
|
LiftUpFromAllParentListElements aLiftUpFromAllParentListElements) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!HTMLEditUtils::IsListItem(&aListItemElement)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (NS_WARN_IF(!aListItemElement.GetParentElement()) ||
|
|
NS_WARN_IF(!aListItemElement.GetParentElement()->GetParentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// if it's first or last list item, don't need to split the list
|
|
// otherwise we do.
|
|
bool isFirstListItem = IsFirstEditableChild(&aListItemElement);
|
|
bool isLastListItem = IsLastEditableChild(&aListItemElement);
|
|
|
|
Element* leftListElement = aListItemElement.GetParentElement();
|
|
if (NS_WARN_IF(!leftListElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If it's at middle of parent list element, split the parent list element.
|
|
// Then, aListItem becomes the first list item of the right list element.
|
|
if (!isFirstListItem && !isLastListItem) {
|
|
EditorDOMPoint atListItemElement(&aListItemElement);
|
|
if (NS_WARN_IF(!atListItemElement.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
MOZ_ASSERT(atListItemElement.IsSetAndValid());
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> maybeLeftListContent =
|
|
SplitNodeWithTransaction(atListItemElement, error);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
error = NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (error.Failed()) {
|
|
NS_WARNING_ASSERTION(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED),
|
|
"EditorBase::SplitNodeWithTransaction() failed");
|
|
return error.StealNSResult();
|
|
}
|
|
if (!maybeLeftListContent->IsElement()) {
|
|
NS_WARNING(
|
|
"EditorBase::SplitNodeWithTransaction() didn't return left list "
|
|
"element");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
leftListElement = maybeLeftListContent->AsElement();
|
|
}
|
|
|
|
// In most cases, insert the list item into the new left list node..
|
|
EditorDOMPoint pointToInsertListItem(leftListElement);
|
|
if (NS_WARN_IF(!pointToInsertListItem.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// But when the list item was the first child of the right list, it should
|
|
// be inserted between the both list elements. This allows user to hit
|
|
// Enter twice at a list item breaks the parent list node.
|
|
if (!isFirstListItem) {
|
|
DebugOnly<bool> advanced = pointToInsertListItem.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset to right list node");
|
|
}
|
|
|
|
nsresult rv =
|
|
MoveNodeWithTransaction(aListItemElement, pointToInsertListItem);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
// Unwrap list item contents if they are no longer in a list
|
|
// XXX If the parent list element is a child of another list element
|
|
// (although invalid tree), the list item element won't be unwrapped.
|
|
// That makes the parent ancestor element tree valid, but might be
|
|
// unexpected result.
|
|
// XXX If aListItemElement is <dl> or <dd> and current parent is <ul> or <ol>,
|
|
// the list items won't be unwrapped. If aListItemElement is <li> and its
|
|
// current parent is <dl>, there is same issue.
|
|
if (!HTMLEditUtils::IsList(pointToInsertListItem.GetContainer()) &&
|
|
HTMLEditUtils::IsListItem(&aListItemElement)) {
|
|
nsresult rv = RemoveBlockContainerWithTransaction(aListItemElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
if (aLiftUpFromAllParentListElements == LiftUpFromAllParentListElements::No) {
|
|
return NS_OK;
|
|
}
|
|
// XXX If aListItemElement is moved to unexpected element by mutation event
|
|
// listener, shouldn't we stop calling this?
|
|
rv = LiftUpListItemElement(aListItemElement,
|
|
LiftUpFromAllParentListElements::Yes);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::LiftUpListItemElement("
|
|
"LiftUpFromAllParentListElements::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::DestroyListStructureRecursively(Element& aListElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(HTMLEditUtils::IsList(&aListElement));
|
|
|
|
// XXX If mutation event listener inserts new child into `aListElement`,
|
|
// this becomes infinite loop so that we should set limit of the
|
|
// loop count from original child count.
|
|
while (aListElement.GetFirstChild()) {
|
|
OwningNonNull<nsIContent> child = *aListElement.GetFirstChild();
|
|
|
|
if (HTMLEditUtils::IsListItem(child)) {
|
|
// XXX Using LiftUpListItemElement() is too expensive for this purpose.
|
|
// Looks like the reason why this method uses it is, only this loop
|
|
// wants to work with first child of aListElement. However, what it
|
|
// actually does is removing <li> as container. Perhaps, we should
|
|
// decide destination first, and then, move contents in `child`.
|
|
// XXX If aListElement is is a child of another list element (although
|
|
// it's invalid tree), this moves the list item to outside of
|
|
// aListElement's parent. Is that really intentional behavior?
|
|
nsresult rv = LiftUpListItemElement(
|
|
MOZ_KnownLive(*child->AsElement()),
|
|
HTMLEditor::LiftUpFromAllParentListElements::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::LiftUpListItemElement(LiftUpFromAllParentListElements:"
|
|
":Yes) failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsList(child)) {
|
|
nsresult rv =
|
|
DestroyListStructureRecursively(MOZ_KnownLive(*child->AsElement()));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DestroyListStructureRecursively() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Delete any non-list items for now
|
|
// XXX This is not HTML5 aware. HTML5 allows all list elements to have
|
|
// <script> and <template> and <dl> element to have <div> to group
|
|
// some <dt> and <dd> elements. So, this may break valid children.
|
|
nsresult rv = DeleteNodeWithTransaction(*child);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Delete the now-empty list
|
|
nsresult rv = RemoveBlockContainerWithTransaction(aListElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::RemoveBlockContainerWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::EnsureSelectionInBodyOrDocumentElement() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
RefPtr<Element> bodyOrDocumentElement = GetRoot();
|
|
if (NS_WARN_IF(!bodyOrDocumentElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorRawDOMPoint atCaret(EditorBase::GetStartPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// XXX This does wrong things. Web apps can put any elements as sibling
|
|
// of `<body>` element. Therefore, this collapses `Selection` into
|
|
// the `<body>` element which `HTMLDocument.body` is set to. So,
|
|
// this makes users impossible to modify content outside of the
|
|
// `<body>` element even if caret is in an editing host.
|
|
|
|
// Check that selection start container is inside the <body> element.
|
|
// XXXsmaug this code is insane.
|
|
nsINode* temp = atCaret.GetContainer();
|
|
while (temp && !temp->IsHTMLElement(nsGkAtoms::body)) {
|
|
temp = temp->GetParentOrShadowHostNode();
|
|
}
|
|
|
|
// If we aren't in the <body> element, force the issue.
|
|
if (!temp) {
|
|
nsresult rv = CollapseSelectionToStartOf(*bodyOrDocumentElement);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed, but ignored");
|
|
return NS_OK;
|
|
}
|
|
|
|
EditorRawDOMPoint selectionEndPoint(
|
|
EditorBase::GetEndPoint(*SelectionRefPtr()));
|
|
if (NS_WARN_IF(!selectionEndPoint.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// check that selNode is inside body
|
|
// XXXsmaug this code is insane.
|
|
temp = selectionEndPoint.GetContainer();
|
|
while (temp && !temp->IsHTMLElement(nsGkAtoms::body)) {
|
|
temp = temp->GetParentOrShadowHostNode();
|
|
}
|
|
|
|
// If we aren't in the <body> element, force the issue.
|
|
if (!temp) {
|
|
nsresult rv = CollapseSelectionToStartOf(*bodyOrDocumentElement);
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed, but ignored");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::InsertPaddingBRElementForEmptyLastLineIfNeeded(
|
|
Element& aElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!HTMLEditUtils::IsBlockElement(aElement)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!IsEmptyNode(aElement)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
CreateElementResult createBRResult =
|
|
InsertPaddingBRElementForEmptyLastLineWithTransaction(
|
|
EditorDOMPoint(&aElement, 0));
|
|
NS_WARNING_ASSERTION(
|
|
createBRResult.Succeeded(),
|
|
"HTMLEditor::InsertPaddingBRElementForEmptyLastLineWithTransaction() "
|
|
"failed");
|
|
return createBRResult.Rv();
|
|
}
|
|
|
|
nsresult HTMLEditor::InsertBRElementIfEmptyBlockElement(Element& aElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!HTMLEditUtils::IsBlockElement(aElement)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!IsEmptyNode(aElement)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> brElement =
|
|
InsertBRElementWithTransaction(EditorDOMPoint(&aElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(brElement,
|
|
"HTMELditor::InsertBRElementWithTransaction() failed");
|
|
return brElement ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult HTMLEditor::RemoveAlignFromDescendants(Element& aElement,
|
|
const nsAString& aAlignType,
|
|
EditTarget aEditTarget) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(!aElement.IsHTMLElement(nsGkAtoms::table));
|
|
|
|
bool useCSS = IsCSSEnabled();
|
|
|
|
// Let's remove all alignment hints in the children of aNode; it can
|
|
// be an ALIGN attribute (in case we just remove it) or a CENTER
|
|
// element (here we have to remove the container and keep its
|
|
// children). We break on tables and don't look at their children.
|
|
nsCOMPtr<nsIContent> nextSibling;
|
|
for (nsIContent* content =
|
|
aEditTarget == EditTarget::NodeAndDescendantsExceptTable
|
|
? &aElement
|
|
: aElement.GetFirstChild();
|
|
content; content = nextSibling) {
|
|
// Get the next sibling before removing content from the DOM tree.
|
|
// XXX If next sibling is removed from the parent and/or inserted to
|
|
// different parent, we will behave unexpectedly. I think that
|
|
// we should create child list and handle it with checking whether
|
|
// it's still a child of expected parent.
|
|
nextSibling = aEditTarget == EditTarget::NodeAndDescendantsExceptTable
|
|
? nullptr
|
|
: content->GetNextSibling();
|
|
|
|
if (content->IsHTMLElement(nsGkAtoms::center)) {
|
|
OwningNonNull<Element> centerElement = *content->AsElement();
|
|
nsresult rv = RemoveAlignFromDescendants(
|
|
centerElement, aAlignType, EditTarget::OnlyDescendantsExceptTable);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::RemoveAlignFromDescendants(EditTarget::"
|
|
"OnlyDescendantsExceptTable) failed");
|
|
return rv;
|
|
}
|
|
|
|
// We may have to insert a `<br>` element before first child of the
|
|
// `<center>` element because it should be first element of a hard line
|
|
// even after removing the `<center>` element.
|
|
rv = EnsureHardLineBeginsWithFirstChildOf(centerElement);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::EnsureHardLineBeginsWithFirstChildOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
// We may have to insert a `<br>` element after last child of the
|
|
// `<center>` element because it should be last element of a hard line
|
|
// even after removing the `<center>` element.
|
|
rv = EnsureHardLineEndsWithLastChildOf(centerElement);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::EnsureHardLineEndsWithLastChildOf() failed");
|
|
return rv;
|
|
}
|
|
|
|
rv = RemoveContainerWithTransaction(centerElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::RemoveContainerWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsBlockElement(*content) &&
|
|
!content->IsHTMLElement(nsGkAtoms::hr)) {
|
|
continue;
|
|
}
|
|
|
|
OwningNonNull<Element> blockOrHRElement = *content->AsElement();
|
|
if (HTMLEditUtils::SupportsAlignAttr(blockOrHRElement)) {
|
|
nsresult rv =
|
|
RemoveAttributeWithTransaction(blockOrHRElement, *nsGkAtoms::align);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::align) "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
if (useCSS) {
|
|
if (blockOrHRElement->IsAnyOfHTMLElements(nsGkAtoms::table,
|
|
nsGkAtoms::hr)) {
|
|
nsresult rv = SetAttributeOrEquivalent(
|
|
blockOrHRElement, nsGkAtoms::align, aAlignType, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"EditorBase::SetAttributeOrEquivalent(nsGkAtoms::align) failed");
|
|
return rv;
|
|
}
|
|
} else {
|
|
nsAutoString dummyCssValue;
|
|
nsresult rv = mCSSEditUtils->RemoveCSSInlineStyle(
|
|
blockOrHRElement, nsGkAtoms::textAlign, dummyCssValue);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"CSSEditUtils::RemoveCSSInlineStyle(nsGkAtoms::textAlign) "
|
|
"failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
if (!blockOrHRElement->IsHTMLElement(nsGkAtoms::table)) {
|
|
// unless this is a table, look at children
|
|
nsresult rv = RemoveAlignFromDescendants(
|
|
blockOrHRElement, aAlignType, EditTarget::OnlyDescendantsExceptTable);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::RemoveAlignFromDescendants(EditTarget::"
|
|
"OnlyDescendantsExceptTable) failed");
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult HTMLEditor::EnsureHardLineBeginsWithFirstChildOf(
|
|
Element& aRemovingContainerElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsIContent* firstEditableChild =
|
|
GetFirstEditableChild(aRemovingContainerElement);
|
|
if (!firstEditableChild) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsBlockElement(*firstEditableChild) ||
|
|
firstEditableChild->IsHTMLElement(nsGkAtoms::br)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* previousEditableContent =
|
|
GetPriorHTMLSibling(&aRemovingContainerElement);
|
|
if (!previousEditableContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsBlockElement(*previousEditableContent) ||
|
|
previousEditableContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> brElement = InsertBRElementWithTransaction(
|
|
EditorDOMPoint(&aRemovingContainerElement, 0));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(brElement,
|
|
"HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return brElement ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult HTMLEditor::EnsureHardLineEndsWithLastChildOf(
|
|
Element& aRemovingContainerElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsIContent* firstEditableContent =
|
|
GetLastEditableChild(aRemovingContainerElement);
|
|
if (!firstEditableContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsBlockElement(*firstEditableContent) ||
|
|
firstEditableContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* nextEditableContent =
|
|
GetPriorHTMLSibling(&aRemovingContainerElement);
|
|
if (!nextEditableContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (HTMLEditUtils::IsBlockElement(*nextEditableContent) ||
|
|
nextEditableContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Element> brElement = InsertBRElementWithTransaction(
|
|
EditorDOMPoint::AtEndOf(aRemovingContainerElement));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(brElement,
|
|
"HTMLEditor::InsertBRElementWithTransaction() failed");
|
|
return brElement ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult HTMLEditor::SetBlockElementAlign(Element& aBlockOrHRElement,
|
|
const nsAString& aAlignType,
|
|
EditTarget aEditTarget) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(HTMLEditUtils::IsBlockElement(aBlockOrHRElement) ||
|
|
aBlockOrHRElement.IsHTMLElement(nsGkAtoms::hr));
|
|
MOZ_ASSERT(IsCSSEnabled() ||
|
|
HTMLEditUtils::SupportsAlignAttr(aBlockOrHRElement));
|
|
|
|
if (!aBlockOrHRElement.IsHTMLElement(nsGkAtoms::table)) {
|
|
nsresult rv =
|
|
RemoveAlignFromDescendants(aBlockOrHRElement, aAlignType, aEditTarget);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RemoveAlignFromDescendants() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
nsresult rv = SetAttributeOrEquivalent(&aBlockOrHRElement, nsGkAtoms::align,
|
|
aAlignType, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SetAttributeOrEquivalent(nsGkAtoms::align) failed");
|
|
return rv;
|
|
}
|
|
|
|
nsresult HTMLEditor::ChangeMarginStart(Element& aElement,
|
|
ChangeMargin aChangeMargin) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsStaticAtom& marginProperty = MarginPropertyAtomForIndent(aElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
nsAutoString value;
|
|
DebugOnly<nsresult> rvIgnored =
|
|
CSSEditUtils::GetSpecifiedProperty(aElement, marginProperty, value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::GetSpecifiedProperty() failed, but ignored");
|
|
float f;
|
|
RefPtr<nsAtom> unit;
|
|
CSSEditUtils::ParseLength(value, &f, getter_AddRefs(unit));
|
|
if (!f) {
|
|
nsAutoString defaultLengthUnit;
|
|
CSSEditUtils::GetDefaultLengthUnit(defaultLengthUnit);
|
|
unit = NS_Atomize(defaultLengthUnit);
|
|
}
|
|
int8_t multiplier = aChangeMargin == ChangeMargin::Increase ? 1 : -1;
|
|
if (nsGkAtoms::in == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_IN * multiplier;
|
|
} else if (nsGkAtoms::cm == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_CM * multiplier;
|
|
} else if (nsGkAtoms::mm == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_MM * multiplier;
|
|
} else if (nsGkAtoms::pt == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_PT * multiplier;
|
|
} else if (nsGkAtoms::pc == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_PC * multiplier;
|
|
} else if (nsGkAtoms::em == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_EM * multiplier;
|
|
} else if (nsGkAtoms::ex == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_EX * multiplier;
|
|
} else if (nsGkAtoms::px == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_PX * multiplier;
|
|
} else if (nsGkAtoms::percentage == unit) {
|
|
f += NS_EDITOR_INDENT_INCREMENT_PERCENT * multiplier;
|
|
}
|
|
|
|
if (0 < f) {
|
|
nsAutoString newValue;
|
|
newValue.AppendFloat(f);
|
|
newValue.Append(nsDependentAtomString(unit));
|
|
DebugOnly<nsresult> rvIgnored = mCSSEditUtils->SetCSSProperty(
|
|
aElement, MOZ_KnownLive(marginProperty), newValue);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"CSSEditUtils::SetCSSProperty() failed, but ignored");
|
|
return NS_OK;
|
|
}
|
|
|
|
mCSSEditUtils->RemoveCSSProperty(aElement, MOZ_KnownLive(marginProperty),
|
|
value);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
|
|
// Remove unnecessary divs
|
|
if (!aElement.IsHTMLElement(nsGkAtoms::div) ||
|
|
HTMLEditor::HasAttributes(&aElement)) {
|
|
return NS_OK;
|
|
}
|
|
// Don't touch editiong host nor node which is outside of it.
|
|
Element* editingHost = GetActiveEditingHost();
|
|
if (&aElement == editingHost ||
|
|
!aElement.IsInclusiveDescendantOf(editingHost)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = RemoveContainerWithTransaction(aElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::RemoveContainerWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::SetSelectionToAbsoluteAsSubAction() {
|
|
MOZ_ASSERT(IsTopLevelEditSubActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eSetPositionToAbsolute, nsIEditor::eNext,
|
|
ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditgor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> focusElement = GetSelectionContainerElement();
|
|
if (focusElement && HTMLEditUtils::IsImage(focusElement)) {
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = std::move(focusElement);
|
|
return EditActionHandled();
|
|
}
|
|
|
|
if (!SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = MaybeExtendSelectionToHardLineEdgesForBlockEditAction();
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeExtendSelectionToHardLineEdgesForBlockEditAction() "
|
|
"failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
|
|
// XXX Is this right thing?
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = nullptr;
|
|
|
|
RefPtr<Element> divElement;
|
|
rv = MoveSelectedContentsToDivElementToMakeItAbsolutePosition(
|
|
address_of(divElement));
|
|
// MoveSelectedContentsToDivElementToMakeItAbsolutePosition() may restore
|
|
// selection with AutoSelectionRestorer. Therefore, the editor might have
|
|
// already been destroyed now.
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MoveSelectedContentsToDivElementToMakeItAbsolutePosition()"
|
|
" failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
if (IsSelectionRangeContainerNotContent()) {
|
|
NS_WARNING("Mutation event listener might have changed the selection");
|
|
return EditActionHandled(NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE);
|
|
}
|
|
|
|
rv = MaybeInsertPaddingBRElementForEmptyLastLineAtSelection();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
if (!divElement) {
|
|
return EditActionHandled();
|
|
}
|
|
|
|
rv = SetPositionToAbsoluteOrStatic(*divElement, true);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::SetPositionToAbsoluteOrStatic() failed");
|
|
|
|
TopLevelEditSubActionDataRef().mNewBlockElement = std::move(divElement);
|
|
return EditActionHandled(rv);
|
|
}
|
|
|
|
nsresult HTMLEditor::MoveSelectedContentsToDivElementToMakeItAbsolutePosition(
|
|
RefPtr<Element>* aTargetElement) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(aTargetElement);
|
|
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
AutoTArray<RefPtr<nsRange>, 4> arrayOfRanges;
|
|
GetSelectionRangesExtendedToHardLineStartAndEnd(
|
|
arrayOfRanges, EditSubAction::eSetPositionToAbsolute);
|
|
|
|
// Use these ranges to construct a list of nodes to act on.
|
|
AutoTArray<OwningNonNull<nsIContent>, 64> arrayOfContents;
|
|
nsresult rv = SplitInlinesAndCollectEditTargetNodes(
|
|
arrayOfRanges, arrayOfContents, EditSubAction::eSetPositionToAbsolute,
|
|
CollectNonEditableNodes::Yes);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING(
|
|
"HTMLEditor::SplitInlinesAndCollectEditTargetNodes("
|
|
"eSetPositionToAbsolute, CollectNonEditableNodes::Yes) failed");
|
|
return rv;
|
|
}
|
|
|
|
// If there is no visible and editable nodes in the edit targets, make an
|
|
// empty block.
|
|
// XXX Isn't this odd if there are only non-editable visible nodes?
|
|
if (IsEmptyOneHardLine(arrayOfContents)) {
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorDOMPoint atCaret(firstRange->StartRef());
|
|
if (NS_WARN_IF(!atCaret.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Make sure we can put a block here.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::div, atCaret);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms::"
|
|
"div) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
RefPtr<Element> newDivElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!newDivElement) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Delete anything that was in the list of nodes
|
|
// XXX We don't need to remove items from the array.
|
|
while (!arrayOfContents.IsEmpty()) {
|
|
OwningNonNull<nsIContent>& curNode = arrayOfContents[0];
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to keep it alive.
|
|
nsresult rv = DeleteNodeWithTransaction(MOZ_KnownLive(*curNode));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::DeleteNodeWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
arrayOfContents.RemoveElementAt(0);
|
|
}
|
|
// Don't restore the selection
|
|
restoreSelectionLater.Abort();
|
|
nsresult rv = CollapseSelectionToStartOf(*newDivElement);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::CollapseSelectionToStartOf() failed");
|
|
*aTargetElement = std::move(newDivElement);
|
|
return rv;
|
|
}
|
|
|
|
// `<div>` element to be positioned absolutely. This may have already
|
|
// existed or newly created by this method.
|
|
RefPtr<Element> targetDivElement;
|
|
// Newly created list element for moving selected list item elements into
|
|
// targetDivElement. I.e., this is created in the `<div>` element.
|
|
RefPtr<Element> createdListElement;
|
|
// If we handle a parent list item element, this is set to it. In such case,
|
|
// we should handle its children again.
|
|
RefPtr<Element> handledListItemElement;
|
|
for (OwningNonNull<nsIContent>& content : arrayOfContents) {
|
|
// Here's where we actually figure out what to do.
|
|
EditorDOMPoint atContent(content);
|
|
if (NS_WARN_IF(!atContent.IsSet())) {
|
|
return NS_ERROR_FAILURE; // XXX not continue??
|
|
}
|
|
|
|
// Ignore all non-editable nodes. Leave them be.
|
|
if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
|
|
// If current node is a child of a list element, we need another list
|
|
// element in absolute-positioned `<div>` element to avoid non-selected
|
|
// list items are moved into the `<div>` element.
|
|
if (HTMLEditUtils::IsList(atContent.GetContainer())) {
|
|
// If we cannot move current node to created list element, we need a
|
|
// list element in the target `<div>` element for the destination.
|
|
// Therefore, duplicate same list element into the target `<div>`
|
|
// element.
|
|
nsIContent* previousEditableContent =
|
|
createdListElement ? GetPriorHTMLSibling(content) : nullptr;
|
|
if (!createdListElement ||
|
|
(previousEditableContent &&
|
|
previousEditableContent != createdListElement)) {
|
|
nsAtom* ULOrOLOrDLTagName =
|
|
atContent.GetContainer()->NodeInfo()->NameAtom();
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(
|
|
MOZ_KnownLive(*ULOrOLOrDLTagName), atContent);
|
|
if (NS_WARN_IF(splitNodeResult.Failed())) {
|
|
return splitNodeResult.Rv();
|
|
}
|
|
if (!targetDivElement) {
|
|
targetDivElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_WARN_IF(!targetDivElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
createdListElement = CreateNodeWithTransaction(
|
|
MOZ_KnownLive(*ULOrOLOrDLTagName),
|
|
EditorDOMPoint::AtEndOf(targetDivElement));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_WARN_IF(!createdListElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
// Move current node (maybe, assumed as a list item element) into the
|
|
// new list element in the target `<div>` element to be positioned
|
|
// absolutely.
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to keep it alive.
|
|
nsresult rv = MoveNodeToEndWithTransaction(MOZ_KnownLive(content),
|
|
*createdListElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// If contents in a list item element is selected, we should move current
|
|
// node into the target `<div>` element with the list item element itself
|
|
// because we want to keep indent level of the contents.
|
|
if (RefPtr<Element> listItemElement =
|
|
GetNearestAncestorListItemElement(content)) {
|
|
if (handledListItemElement == listItemElement) {
|
|
// Current node has already been moved into the `<div>` element.
|
|
continue;
|
|
}
|
|
// If we cannot move the list item element into created list element,
|
|
// we need another list element in the target `<div>` element.
|
|
nsIContent* previousEditableContent =
|
|
createdListElement ? GetPriorHTMLSibling(listItemElement) : nullptr;
|
|
if (!createdListElement ||
|
|
(previousEditableContent &&
|
|
previousEditableContent != createdListElement)) {
|
|
EditorDOMPoint atListItem(listItemElement);
|
|
if (NS_WARN_IF(!atListItem.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// XXX If content is the listItemElement and not in a list element,
|
|
// we duplicate wrong element into the target `<div>` element.
|
|
nsAtom* containerName =
|
|
atListItem.GetContainer()->NodeInfo()->NameAtom();
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(
|
|
MOZ_KnownLive(*containerName), atListItem);
|
|
if (NS_WARN_IF(splitNodeResult.Failed())) {
|
|
return splitNodeResult.Rv();
|
|
}
|
|
if (!targetDivElement) {
|
|
targetDivElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, EditorDOMPoint(atListItem.GetContainer()));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_WARN_IF(!targetDivElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
// XXX So, createdListElement may be set to a non-list element.
|
|
createdListElement = CreateNodeWithTransaction(
|
|
MOZ_KnownLive(*containerName),
|
|
EditorDOMPoint::AtEndOf(targetDivElement));
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_WARN_IF(!createdListElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
// Move current list item element into the createdListElement (could be
|
|
// non-list element due to the above bug) in a candidate `<div>` element
|
|
// to be positioned absolutely.
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(*listItemElement, *createdListElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
handledListItemElement = std::move(listItemElement);
|
|
continue;
|
|
}
|
|
|
|
if (!targetDivElement) {
|
|
// If we meet a `<div>` element, use it as the absolute-position
|
|
// container.
|
|
// XXX This looks odd. If there are 2 or more `<div>` elements are
|
|
// selected, first found `<div>` element will have all other
|
|
// selected nodes.
|
|
if (content->IsHTMLElement(nsGkAtoms::div)) {
|
|
targetDivElement = content->AsElement();
|
|
MOZ_ASSERT(!createdListElement);
|
|
MOZ_ASSERT(!handledListItemElement);
|
|
continue;
|
|
}
|
|
// Otherwise, create new `<div>` element to be positioned absolutely
|
|
// and to contain all selected nodes.
|
|
SplitNodeResult splitNodeResult =
|
|
MaybeSplitAncestorsForInsertWithTransaction(*nsGkAtoms::div,
|
|
atContent);
|
|
if (splitNodeResult.Failed()) {
|
|
NS_WARNING(
|
|
"HTMLEditor::MaybeSplitAncestorsForInsertWithTransaction(nsGkAtoms:"
|
|
":div) failed");
|
|
return splitNodeResult.Rv();
|
|
}
|
|
targetDivElement = CreateNodeWithTransaction(
|
|
*nsGkAtoms::div, splitNodeResult.SplitPoint());
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (!targetDivElement) {
|
|
NS_WARNING(
|
|
"EditorBase::CreateNodeWithTransaction(nsGkAtoms::div) failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
// MOZ_KnownLive because 'arrayOfContents' is guaranteed to keep it alive.
|
|
nsresult rv =
|
|
MoveNodeToEndWithTransaction(MOZ_KnownLive(content), *targetDivElement);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("EditorBase::MoveNodeToEndWithTransaction() failed");
|
|
return rv;
|
|
}
|
|
// Forget createdListElement, if any
|
|
createdListElement = nullptr;
|
|
}
|
|
*aTargetElement = std::move(targetDivElement);
|
|
return NS_OK;
|
|
}
|
|
|
|
EditActionResult HTMLEditor::SetSelectionToStaticAsSubAction() {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this, EditSubAction::eSetPositionToStatic, nsIEditor::eNext,
|
|
ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionResult(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> element = GetAbsolutelyPositionedSelectionContainer();
|
|
if (!element) {
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING(
|
|
"HTMLEditor::GetAbsolutelyPositionedSelectionContainer() returned "
|
|
"nullptr");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
{
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
nsresult rv = SetPositionToAbsoluteOrStatic(*element, false);
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::SetPositionToAbsoluteOrStatic() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
|
|
// Restoring Selection might cause destroying the HTML editor.
|
|
return NS_WARN_IF(Destroyed()) ? EditActionHandled(NS_ERROR_EDITOR_DESTROYED)
|
|
: EditActionHandled(NS_OK);
|
|
}
|
|
|
|
EditActionResult HTMLEditor::AddZIndexAsSubAction(int32_t aChange) {
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
IgnoredErrorResult ignoredError;
|
|
AutoEditSubActionNotifier startToHandleEditSubAction(
|
|
*this,
|
|
aChange < 0 ? EditSubAction::eDecreaseZIndex
|
|
: EditSubAction::eIncreaseZIndex,
|
|
nsIEditor::eNext, ignoredError);
|
|
if (NS_WARN_IF(ignoredError.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
|
|
return EditActionResult(ignoredError.StealNSResult());
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
!ignoredError.Failed(),
|
|
"HTMLEditor::OnStartToHandleTopLevelEditSubAction() failed, but ignored");
|
|
|
|
EditActionResult result = CanHandleHTMLEditSubAction();
|
|
if (result.Failed() || result.Canceled()) {
|
|
NS_WARNING_ASSERTION(result.Succeeded(),
|
|
"HTMLEditor::CanHandleHTMLEditSubAction() failed");
|
|
return result;
|
|
}
|
|
|
|
nsresult rv = EnsureNoPaddingBRElementForEmptyEditor();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"EditorBase::EnsureNoPaddingBRElementForEmptyEditor() "
|
|
"failed, but ignored");
|
|
|
|
if (NS_SUCCEEDED(rv) && SelectionRefPtr()->IsCollapsed()) {
|
|
nsresult rv = EnsureCaretNotAfterPaddingBRElement();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"HTMLEditor::EnsureCaretNotAfterPaddingBRElement() "
|
|
"failed, but ignored");
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsresult rv = PrepareInlineStylesForCaret();
|
|
if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"HTMLEditor::PrepareInlineStylesForCaret() failed, but ignored");
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> absolutelyPositionedElement =
|
|
GetAbsolutelyPositionedSelectionContainer();
|
|
if (!absolutelyPositionedElement) {
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return EditActionHandled(NS_ERROR_EDITOR_DESTROYED);
|
|
}
|
|
NS_WARNING(
|
|
"HTMLEditor::GetAbsolutelyPositionedSelectionContainer() returned "
|
|
"nullptr");
|
|
return EditActionHandled(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
{
|
|
AutoSelectionRestorer restoreSelectionLater(*this);
|
|
|
|
int32_t zIndex;
|
|
nsresult rv = RelativeChangeElementZIndex(*absolutelyPositionedElement,
|
|
aChange, &zIndex);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("HTMLEditor::RelativeChangeElementZIndex() failed");
|
|
return EditActionHandled(rv);
|
|
}
|
|
}
|
|
|
|
// Restoring Selection might cause destroying the HTML editor.
|
|
return NS_WARN_IF(Destroyed()) ? EditActionHandled(NS_ERROR_EDITOR_DESTROYED)
|
|
: EditActionHandled(NS_OK);
|
|
}
|
|
|
|
nsresult HTMLEditor::OnDocumentModified() {
|
|
if (mPendingDocumentModifiedRunner) {
|
|
return NS_OK; // We've already posted same runnable into the queue.
|
|
}
|
|
mPendingDocumentModifiedRunner = NewRunnableMethod(
|
|
"HTMLEditor::OnModifyDocument", this, &HTMLEditor::OnModifyDocument);
|
|
nsContentUtils::AddScriptRunner(do_AddRef(mPendingDocumentModifiedRunner));
|
|
// Be aware, if OnModifyDocument() may be called synchronously, the
|
|
// editor might have been destroyed here.
|
|
return NS_WARN_IF(Destroyed()) ? NS_ERROR_EDITOR_DESTROYED : NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla
|