зеркало из https://github.com/mozilla/gecko-dev.git
5309 строки
164 KiB
C++
5309 строки
164 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "mozilla/EditorBase.h"
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#include "mozilla/DebugOnly.h" // for DebugOnly
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#include "mozilla/Encoding.h" // for Encoding
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#include <stdio.h> // for nullptr, stdout
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#include <string.h> // for strcmp
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#include "ChangeAttributeTransaction.h" // for ChangeAttributeTransaction
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#include "CompositionTransaction.h" // for CompositionTransaction
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#include "CreateElementTransaction.h" // for CreateElementTransaction
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#include "DeleteNodeTransaction.h" // for DeleteNodeTransaction
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#include "DeleteRangeTransaction.h" // for DeleteRangeTransaction
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#include "DeleteTextTransaction.h" // for DeleteTextTransaction
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#include "EditAggregateTransaction.h" // for EditAggregateTransaction
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#include "EditorEventListener.h" // for EditorEventListener
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#include "HTMLEditRules.h" // for HTMLEditRules
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#include "InsertNodeTransaction.h" // for InsertNodeTransaction
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#include "InsertTextTransaction.h" // for InsertTextTransaction
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#include "JoinNodeTransaction.h" // for JoinNodeTransaction
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#include "PlaceholderTransaction.h" // for PlaceholderTransaction
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#include "SplitNodeTransaction.h" // for SplitNodeTransaction
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#include "TextEditUtils.h" // for TextEditUtils
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#include "mozilla/CheckedInt.h" // for CheckedInt
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#include "mozilla/ComputedStyle.h" // for ComputedStyle
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#include "mozilla/CSSEditUtils.h" // for CSSEditUtils
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#include "mozilla/EditAction.h" // for EditSubAction
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#include "mozilla/EditorDOMPoint.h" // for EditorDOMPoint
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#include "mozilla/EditorSpellCheck.h" // for EditorSpellCheck
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#include "mozilla/EditorUtils.h" // for various helper classes.
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#include "mozilla/EditTransactionBase.h" // for EditTransactionBase
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#include "mozilla/FlushType.h" // for FlushType::Frames
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#include "mozilla/IMEContentObserver.h" // for IMEContentObserver
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#include "mozilla/IMEStateManager.h" // for IMEStateManager
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#include "mozilla/mozalloc.h" // for operator new, etc.
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#include "mozilla/mozInlineSpellChecker.h" // for mozInlineSpellChecker
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#include "mozilla/mozSpellChecker.h" // for mozSpellChecker
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#include "mozilla/Preferences.h" // for Preferences
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#include "mozilla/RangeBoundary.h" // for RawRangeBoundary, RangeBoundary
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#include "mozilla/dom/Selection.h" // for Selection, etc.
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#include "mozilla/Services.h" // for GetObserverService
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#include "mozilla/TextComposition.h" // for TextComposition
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#include "mozilla/TextInputListener.h" // for TextInputListener
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#include "mozilla/TextServicesDocument.h" // for TextServicesDocument
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#include "mozilla/TextEvents.h"
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#include "mozilla/TransactionManager.h" // for TransactionManager
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#include "mozilla/dom/CharacterData.h" // for CharacterData
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#include "mozilla/dom/Element.h" // for Element, nsINode::AsElement
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#include "mozilla/dom/EventTarget.h" // for EventTarget
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#include "mozilla/dom/HTMLBodyElement.h"
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#include "mozilla/dom/Text.h"
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#include "mozilla/dom/Event.h"
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#include "nsAString.h" // for nsAString::Length, etc.
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#include "nsCCUncollectableMarker.h" // for nsCCUncollectableMarker
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#include "nsCaret.h" // for nsCaret
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#include "nsCaseTreatment.h"
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#include "nsCharTraits.h" // for NS_IS_HIGH_SURROGATE, etc.
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#include "nsComponentManagerUtils.h" // for do_CreateInstance
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#include "nsComputedDOMStyle.h" // for nsComputedDOMStyle
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#include "nsContentUtils.h" // for nsContentUtils
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#include "nsDOMString.h" // for DOMStringIsNull
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#include "nsDebug.h" // for NS_ENSURE_TRUE, etc.
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#include "nsError.h" // for NS_OK, etc.
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#include "nsFocusManager.h" // for nsFocusManager
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#include "nsFrameSelection.h" // for nsFrameSelection
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#include "nsGenericHTMLElement.h" // for nsGenericHTMLElement
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#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::dir
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#include "nsIAbsorbingTransaction.h" // for nsIAbsorbingTransaction
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#include "nsAtom.h" // for nsAtom
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#include "nsIContent.h" // for nsIContent
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#include "nsIDocument.h" // for nsIDocument
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#include "nsIDOMEventListener.h" // for nsIDOMEventListener
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#include "nsIDocumentStateListener.h" // for nsIDocumentStateListener
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#include "nsIEditActionListener.h" // for nsIEditActionListener
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#include "nsIEditorObserver.h" // for nsIEditorObserver
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#include "nsIEditorSpellCheck.h" // for nsIEditorSpellCheck
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#include "nsIFrame.h" // for nsIFrame
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#include "nsIHTMLDocument.h" // for nsIHTMLDocument
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#include "nsIInlineSpellChecker.h" // for nsIInlineSpellChecker, etc.
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#include "nsNameSpaceManager.h" // for kNameSpaceID_None, etc.
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#include "nsINode.h" // for nsINode, etc.
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#include "nsIPlaintextEditor.h" // for nsIPlaintextEditor, etc.
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#include "nsIPresShell.h" // for nsIPresShell
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#include "nsISelectionController.h" // for nsISelectionController, etc.
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#include "nsISelectionDisplay.h" // for nsISelectionDisplay, etc.
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#include "nsISupportsBase.h" // for nsISupports
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#include "nsISupportsUtils.h" // for NS_ADDREF, NS_IF_ADDREF
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#include "nsITransaction.h" // for nsITransaction
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#include "nsITransactionManager.h"
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#include "nsIWeakReference.h" // for nsISupportsWeakReference
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#include "nsIWidget.h" // for nsIWidget, IMEState, etc.
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#include "nsPIDOMWindow.h" // for nsPIDOMWindow
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#include "nsPresContext.h" // for nsPresContext
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#include "nsRange.h" // for nsRange
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#include "nsReadableUtils.h" // for EmptyString, ToNewCString
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#include "nsString.h" // for nsAutoString, nsString, etc.
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#include "nsStringFwd.h" // for nsString
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#include "nsStyleConsts.h" // for NS_STYLE_DIRECTION_RTL, etc.
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#include "nsStyleStruct.h" // for nsStyleDisplay, nsStyleText, etc.
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#include "nsStyleStructFwd.h" // for nsIFrame::StyleUIReset, etc.
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#include "nsTextNode.h" // for nsTextNode
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#include "nsThreadUtils.h" // for nsRunnable
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#include "prtime.h" // for PR_Now
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class nsIOutputStream;
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class nsITransferable;
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namespace mozilla {
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using namespace dom;
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using namespace widget;
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/*****************************************************************************
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* mozilla::EditorBase
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*****************************************************************************/
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template already_AddRefed<Element>
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EditorBase::CreateNodeWithTransaction(nsAtom& aTag,
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const EditorDOMPoint& aPointToInsert);
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template already_AddRefed<Element>
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EditorBase::CreateNodeWithTransaction(nsAtom& aTag,
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const EditorRawDOMPoint& aPointToInsert);
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template nsresult
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EditorBase::InsertNodeWithTransaction(nsIContent& aContentToInsert,
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const EditorDOMPoint& aPointToInsert);
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template nsresult
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EditorBase::InsertNodeWithTransaction(nsIContent& aContentToInsert,
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const EditorRawDOMPoint& aPointToInsert);
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template already_AddRefed<nsIContent>
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EditorBase::SplitNodeWithTransaction(const EditorDOMPoint& aStartOfRightNode,
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ErrorResult& aError);
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template already_AddRefed<nsIContent>
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EditorBase::SplitNodeWithTransaction(const EditorRawDOMPoint& aStartOfRightNode,
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ErrorResult& aError);
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template SplitNodeResult
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EditorBase::SplitNodeDeepWithTransaction(
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nsIContent& aMostAncestorToSplit,
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const EditorDOMPoint& aStartOfDeepestRightNode,
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SplitAtEdges aSplitAtEdges);
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template SplitNodeResult
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EditorBase::SplitNodeDeepWithTransaction(
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nsIContent& aMostAncestorToSplit,
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const EditorRawDOMPoint& aStartOfDeepestRightNode,
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SplitAtEdges aSplitAtEdges);
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template nsresult
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EditorBase::MoveNodeWithTransaction(nsIContent& aContent,
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const EditorDOMPoint& aPointToInsert);
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template nsresult
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EditorBase::MoveNodeWithTransaction(nsIContent& aContent,
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const EditorRawDOMPoint& aPointToInsert);
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EditorBase::EditorBase()
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: mEditActionData(nullptr)
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, mPlaceholderName(nullptr)
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, mModCount(0)
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, mFlags(0)
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, mUpdateCount(0)
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, mPlaceholderBatch(0)
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, mTopLevelEditSubAction(EditSubAction::eNone)
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, mDirection(eNone)
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, mDocDirtyState(-1)
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, mSpellcheckCheckboxState(eTriUnset)
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, mAllowsTransactionsToChangeSelection(true)
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, mDidPreDestroy(false)
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, mDidPostCreate(false)
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, mDispatchInputEvent(true)
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, mIsInEditSubAction(false)
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, mHidingCaret(false)
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, mSpellCheckerDictionaryUpdated(true)
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, mIsHTMLEditorClass(false)
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{
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}
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EditorBase::~EditorBase()
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{
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MOZ_ASSERT(!IsInitialized() || mDidPreDestroy,
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"Why PreDestroy hasn't been called?");
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if (mComposition) {
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mComposition->OnEditorDestroyed();
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mComposition = nullptr;
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}
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// If this editor is still hiding the caret, we need to restore it.
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HideCaret(false);
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mTransactionManager = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(EditorBase)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(EditorBase)
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// Remove event listeners first since EditorEventListener may need
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// mDocument, mEventTarget, etc.
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if (tmp->mEventListener) {
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tmp->mEventListener->Disconnect();
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tmp->mEventListener = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mRootElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mSelectionController)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocument)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mIMEContentObserver)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mInlineSpellChecker)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTextServicesDocument)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTextInputListener)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTransactionManager)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mActionListeners)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mEditorObservers)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocStateListeners)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mEventTarget)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mPlaceholderTransaction)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mSavedSel);
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mRangeUpdater);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(EditorBase)
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nsIDocument* currentDoc =
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tmp->mRootElement ? tmp->mRootElement->GetUncomposedDoc() : nullptr;
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if (currentDoc &&
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nsCCUncollectableMarker::InGeneration(cb, currentDoc->GetMarkedCCGeneration())) {
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return NS_SUCCESS_INTERRUPTED_TRAVERSE;
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRootElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectionController)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIMEContentObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInlineSpellChecker)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTextServicesDocument)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTextInputListener)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTransactionManager)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActionListeners)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEditorObservers)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocStateListeners)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventTarget)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventListener)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPlaceholderTransaction)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSavedSel);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRangeUpdater);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(EditorBase)
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NS_INTERFACE_MAP_ENTRY(nsISelectionListener)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY(nsIEditor)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditor)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(EditorBase)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(EditorBase)
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nsresult
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EditorBase::Init(nsIDocument& aDocument,
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Element* aRoot,
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nsISelectionController* aSelectionController,
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uint32_t aFlags,
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const nsAString& aValue)
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{
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MOZ_ASSERT(mTopLevelEditSubAction == EditSubAction::eNone,
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"Initializing during an edit action is an error");
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// First only set flags, but other stuff shouldn't be initialized now.
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// Don't move this call after initializing mDocument.
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// SetFlags() can check whether it's called during initialization or not by
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// them. Note that SetFlags() will be called by PostCreate().
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#ifdef DEBUG
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nsresult rv =
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#endif
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SetFlags(aFlags);
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NS_ASSERTION(NS_SUCCEEDED(rv), "SetFlags() failed");
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mDocument = &aDocument;
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// HTML editors currently don't have their own selection controller,
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// so they'll pass null as aSelCon, and we'll get the selection controller
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// off of the presshell.
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nsCOMPtr<nsISelectionController> selectionController;
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if (aSelectionController) {
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mSelectionController = aSelectionController;
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selectionController = aSelectionController;
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} else {
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nsCOMPtr<nsIPresShell> presShell = GetPresShell();
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selectionController = do_QueryInterface(presShell);
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}
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MOZ_ASSERT(selectionController,
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"Selection controller should be available at this point");
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//set up root element if we are passed one.
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if (aRoot) {
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mRootElement = aRoot;
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}
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mUpdateCount=0;
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// If this is an editor for <input> or <textarea>, the text node which
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// has composition string is always recreated with same content. Therefore,
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// we need to nodify mComposition of text node destruction and replacing
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// composing string when this receives eCompositionChange event next time.
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if (mComposition &&
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mComposition->GetContainerTextNode() &&
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!mComposition->GetContainerTextNode()->IsInComposedDoc()) {
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mComposition->OnTextNodeRemoved();
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}
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// Show the caret.
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selectionController->SetCaretReadOnly(false);
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selectionController->SetDisplaySelection(
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nsISelectionController::SELECTION_ON);
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// Show all the selection reflected to user.
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selectionController->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);
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MOZ_ASSERT(IsInitialized());
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AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
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if (NS_WARN_IF(!editActionData.CanHandle())) {
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return NS_ERROR_FAILURE;
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}
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SelectionRefPtr()->AddSelectionListener(this);
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// Make sure that the editor will be destroyed properly
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mDidPreDestroy = false;
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// Make sure that the ediotr will be created properly
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mDidPostCreate = false;
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return NS_OK;
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}
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nsresult
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EditorBase::PostCreate()
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{
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AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
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if (NS_WARN_IF(!editActionData.CanHandle())) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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// Synchronize some stuff for the flags. SetFlags() will initialize
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// something by the flag difference. This is first time of that, so, all
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// initializations must be run. For such reason, we need to invert mFlags
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// value first.
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mFlags = ~mFlags;
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nsresult rv = SetFlags(~mFlags);
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NS_ENSURE_SUCCESS(rv, rv);
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// These operations only need to happen on the first PostCreate call
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if (!mDidPostCreate) {
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mDidPostCreate = true;
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// Set up listeners
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CreateEventListeners();
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rv = InstallEventListeners();
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NS_ENSURE_SUCCESS(rv, rv);
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// nuke the modification count, so the doc appears unmodified
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// do this before we notify listeners
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ResetModificationCount();
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// update the UI with our state
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NotifyDocumentListeners(eDocumentCreated);
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NotifyDocumentListeners(eDocumentStateChanged);
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}
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// update nsTextStateManager and caret if we have focus
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nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
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if (focusedContent) {
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InitializeSelection(focusedContent);
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// If the text control gets reframed during focus, Focus() would not be
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// called, so take a chance here to see if we need to spell check the text
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// control.
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mEventListener->SpellCheckIfNeeded();
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IMEState newState;
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rv = GetPreferredIMEState(&newState);
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NS_ENSURE_SUCCESS(rv, NS_OK);
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// May be null in design mode
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nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
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IMEStateManager::UpdateIMEState(newState, content, this);
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}
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// FYI: This call might cause destroying this editor.
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IMEStateManager::OnEditorInitialized(*this);
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return NS_OK;
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}
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void
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EditorBase::SetTextInputListener(TextInputListener* aTextInputListener)
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{
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MOZ_ASSERT(!mTextInputListener || !aTextInputListener ||
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mTextInputListener == aTextInputListener);
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mTextInputListener = aTextInputListener;
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}
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void
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EditorBase::SetIMEContentObserver(IMEContentObserver* aIMEContentObserver)
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{
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MOZ_ASSERT(!mIMEContentObserver || !aIMEContentObserver ||
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mIMEContentObserver == aIMEContentObserver);
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mIMEContentObserver = aIMEContentObserver;
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}
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void
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EditorBase::CreateEventListeners()
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{
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// Don't create the handler twice
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if (!mEventListener) {
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mEventListener = new EditorEventListener();
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}
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}
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nsresult
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EditorBase::InstallEventListeners()
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{
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if (NS_WARN_IF(!IsInitialized()) || NS_WARN_IF(!mEventListener)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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// Initialize the event target.
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nsCOMPtr<nsIContent> rootContent = GetRoot();
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NS_ENSURE_TRUE(rootContent, NS_ERROR_NOT_AVAILABLE);
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mEventTarget = rootContent->GetParent();
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NS_ENSURE_TRUE(mEventTarget, NS_ERROR_NOT_AVAILABLE);
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nsresult rv = mEventListener->Connect(this);
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if (mComposition) {
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// Restart to handle composition with new editor contents.
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mComposition->StartHandlingComposition(this);
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}
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return rv;
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}
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void
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EditorBase::RemoveEventListeners()
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{
|
|
if (!IsInitialized() || !mEventListener) {
|
|
return;
|
|
}
|
|
mEventListener->Disconnect();
|
|
if (mComposition) {
|
|
// Even if this is called, don't release mComposition because this is
|
|
// may be reused after reframing.
|
|
mComposition->EndHandlingComposition(this);
|
|
}
|
|
mEventTarget = nullptr;
|
|
}
|
|
|
|
bool
|
|
EditorBase::GetDesiredSpellCheckState()
|
|
{
|
|
// Check user override on this element
|
|
if (mSpellcheckCheckboxState != eTriUnset) {
|
|
return (mSpellcheckCheckboxState == eTriTrue);
|
|
}
|
|
|
|
// Check user preferences
|
|
int32_t spellcheckLevel = Preferences::GetInt("layout.spellcheckDefault", 1);
|
|
|
|
if (!spellcheckLevel) {
|
|
return false; // Spellchecking forced off globally
|
|
}
|
|
|
|
if (!CanEnableSpellCheck()) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
if (presShell) {
|
|
nsPresContext* context = presShell->GetPresContext();
|
|
if (context && !context->IsDynamic()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Check DOM state
|
|
nsCOMPtr<nsIContent> content = GetExposedRoot();
|
|
if (!content) {
|
|
return false;
|
|
}
|
|
|
|
auto element = nsGenericHTMLElement::FromNode(content);
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
|
|
if (!IsPlaintextEditor()) {
|
|
// Some of the page content might be editable and some not, if spellcheck=
|
|
// is explicitly set anywhere, so if there's anything editable on the page,
|
|
// return true and let the spellchecker figure it out.
|
|
nsCOMPtr<nsIHTMLDocument> doc = do_QueryInterface(content->GetComposedDoc());
|
|
return doc && doc->IsEditingOn();
|
|
}
|
|
|
|
return element->Spellcheck();
|
|
}
|
|
|
|
void
|
|
EditorBase::PreDestroy(bool aDestroyingFrames)
|
|
{
|
|
if (mDidPreDestroy) {
|
|
return;
|
|
}
|
|
|
|
Selection* selection = GetSelection();
|
|
if (selection) {
|
|
selection->RemoveSelectionListener(this);
|
|
}
|
|
|
|
IMEStateManager::OnEditorDestroying(*this);
|
|
|
|
// Let spellchecker clean up its observers etc. It is important not to
|
|
// actually free the spellchecker here, since the spellchecker could have
|
|
// caused flush notifications, which could have gotten here if a textbox
|
|
// is being removed. Setting the spellchecker to nullptr could free the
|
|
// object that is still in use! It will be freed when the editor is
|
|
// destroyed.
|
|
if (mInlineSpellChecker)
|
|
mInlineSpellChecker->Cleanup(aDestroyingFrames);
|
|
|
|
// tell our listeners that the doc is going away
|
|
NotifyDocumentListeners(eDocumentToBeDestroyed);
|
|
|
|
// Unregister event listeners
|
|
RemoveEventListeners();
|
|
// If this editor is still hiding the caret, we need to restore it.
|
|
HideCaret(false);
|
|
mActionListeners.Clear();
|
|
mEditorObservers.Clear();
|
|
mDocStateListeners.Clear();
|
|
mInlineSpellChecker = nullptr;
|
|
mTextServicesDocument = nullptr;
|
|
mTextInputListener = nullptr;
|
|
mSpellcheckCheckboxState = eTriUnset;
|
|
mRootElement = nullptr;
|
|
|
|
// Transaction may grab this instance. Therefore, they should be released
|
|
// here for stopping the circular reference with this instance.
|
|
if (mTransactionManager) {
|
|
DebugOnly<bool> disabledUndoRedo = DisableUndoRedo();
|
|
NS_WARNING_ASSERTION(disabledUndoRedo,
|
|
"Failed to disable undo/redo transactions");
|
|
mTransactionManager = nullptr;
|
|
}
|
|
|
|
mDidPreDestroy = true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetFlags(uint32_t* aFlags)
|
|
{
|
|
// NOTE: If you need to override this method, you need to make Flags()
|
|
// virtual.
|
|
*aFlags = Flags();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetFlags(uint32_t aFlags)
|
|
{
|
|
if (mFlags == aFlags) {
|
|
return NS_OK;
|
|
}
|
|
|
|
bool spellcheckerWasEnabled = CanEnableSpellCheck();
|
|
mFlags = aFlags;
|
|
|
|
if (!IsInitialized()) {
|
|
// If we're initializing, we shouldn't do anything now.
|
|
// SetFlags() will be called by PostCreate(),
|
|
// we should synchronize some stuff for the flags at that time.
|
|
return NS_OK;
|
|
}
|
|
|
|
// The flag change may cause the spellchecker state change
|
|
if (CanEnableSpellCheck() != spellcheckerWasEnabled) {
|
|
SyncRealTimeSpell();
|
|
}
|
|
|
|
// If this is called from PostCreate(), it will update the IME state if it's
|
|
// necessary.
|
|
if (!mDidPostCreate) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Might be changing editable state, so, we need to reset current IME state
|
|
// if we're focused and the flag change causes IME state change.
|
|
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
|
|
if (focusedContent) {
|
|
IMEState newState;
|
|
nsresult rv = GetPreferredIMEState(&newState);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// NOTE: When the enabled state isn't going to be modified, this method
|
|
// is going to do nothing.
|
|
nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
|
|
IMEStateManager::UpdateIMEState(newState, content, this);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetIsSelectionEditable(bool* aIsSelectionEditable)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aIsSelectionEditable);
|
|
*aIsSelectionEditable = IsSelectionEditable();
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsSelectionEditable()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return false;
|
|
}
|
|
|
|
if (!mIsHTMLEditorClass) {
|
|
// XXX we just check that the anchor node is editable at the moment
|
|
// we should check that all nodes in the selection are editable
|
|
nsCOMPtr<nsINode> anchorNode = SelectionRefPtr()->GetAnchorNode();
|
|
return anchorNode && IsEditable(anchorNode);
|
|
}
|
|
|
|
nsINode* anchorNode = SelectionRefPtr()->GetAnchorNode();
|
|
nsINode* focusNode = SelectionRefPtr()->GetFocusNode();
|
|
if (!anchorNode || !focusNode) {
|
|
return false;
|
|
}
|
|
|
|
// Per the editing spec as of June 2012: we have to have a selection whose
|
|
// start and end nodes are editable, and which share an ancestor editing
|
|
// host. (Bug 766387.)
|
|
bool isSelectionEditable = SelectionRefPtr()->RangeCount() &&
|
|
anchorNode->IsEditable() &&
|
|
focusNode->IsEditable();
|
|
if (!isSelectionEditable) {
|
|
return false;
|
|
}
|
|
|
|
nsINode* commonAncestor =
|
|
SelectionRefPtr()->GetAnchorFocusRange()->GetCommonAncestor();
|
|
while (commonAncestor && !commonAncestor->IsEditable()) {
|
|
commonAncestor = commonAncestor->GetParentNode();
|
|
}
|
|
// If there is no editable common ancestor, return false.
|
|
return !!commonAncestor;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetIsDocumentEditable(bool* aIsDocumentEditable)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aIsDocumentEditable);
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
*aIsDocumentEditable = doc && IsModifiable();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetDocument(nsIDocument** aDoc)
|
|
{
|
|
NS_IF_ADDREF(*aDoc = mDocument);
|
|
return *aDoc ? NS_OK : NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
already_AddRefed<nsIWidget>
|
|
EditorBase::GetWidget()
|
|
{
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
NS_ENSURE_TRUE(ps, nullptr);
|
|
nsPresContext* pc = ps->GetPresContext();
|
|
NS_ENSURE_TRUE(pc, nullptr);
|
|
nsCOMPtr<nsIWidget> widget = pc->GetRootWidget();
|
|
NS_ENSURE_TRUE(widget.get(), nullptr);
|
|
return widget.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetContentsMIMEType(char** aContentsMIMEType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aContentsMIMEType);
|
|
*aContentsMIMEType = ToNewCString(mContentMIMEType);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetContentsMIMEType(const char* aContentsMIMEType)
|
|
{
|
|
mContentMIMEType.Assign(aContentsMIMEType ? aContentsMIMEType : "");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetSelectionController(nsISelectionController** aSel)
|
|
{
|
|
NS_ENSURE_TRUE(aSel, NS_ERROR_NULL_POINTER);
|
|
*aSel = nullptr; // init out param
|
|
nsCOMPtr<nsISelectionController> selCon = GetSelectionController();
|
|
if (NS_WARN_IF(!selCon)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
selCon.forget(aSel);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::DeleteSelection(EDirection aAction,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetSelection(Selection** aSelection)
|
|
{
|
|
return GetSelection(SelectionType::eNormal, aSelection);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::GetSelection(SelectionType aSelectionType,
|
|
Selection** aSelection) const
|
|
{
|
|
if (NS_WARN_IF(!aSelection)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
if (IsEditActionDataAvailable()) {
|
|
*aSelection = do_AddRef(SelectionRefPtr()).take();
|
|
return NS_OK;
|
|
}
|
|
*aSelection = nullptr;
|
|
nsISelectionController* selcon = GetSelectionController();
|
|
if (!selcon) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
RefPtr<Selection> selection =
|
|
selcon->GetSelection(ToRawSelectionType(aSelectionType));
|
|
if (!selection) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
selection.forget(aSelection);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::DoTransaction(nsITransaction* aTxn)
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eUnknown);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return DoTransactionInternal(aTxn);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::DoTransactionInternal(nsITransaction* aTxn)
|
|
{
|
|
if (mPlaceholderBatch && !mPlaceholderTransaction) {
|
|
mPlaceholderTransaction =
|
|
PlaceholderTransaction::Create(*this, mPlaceholderName, std::move(mSelState));
|
|
MOZ_ASSERT(mSelState.isNothing());
|
|
|
|
// We will recurse, but will not hit this case in the nested call
|
|
DoTransactionInternal(mPlaceholderTransaction);
|
|
|
|
if (mTransactionManager) {
|
|
nsCOMPtr<nsITransaction> topTransaction =
|
|
mTransactionManager->PeekUndoStack();
|
|
nsCOMPtr<nsIAbsorbingTransaction> topAbsorbingTransaction =
|
|
do_QueryInterface(topTransaction);
|
|
if (topAbsorbingTransaction) {
|
|
RefPtr<PlaceholderTransaction> topPlaceholderTransaction =
|
|
topAbsorbingTransaction->AsPlaceholderTransaction();
|
|
if (topPlaceholderTransaction) {
|
|
// there is a placeholder transaction on top of the undo stack. It
|
|
// is either the one we just created, or an earlier one that we are
|
|
// now merging into. From here on out remember this placeholder
|
|
// instead of the one we just created.
|
|
mPlaceholderTransaction = topPlaceholderTransaction;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aTxn) {
|
|
// XXX: Why are we doing selection specific batching stuff here?
|
|
// XXX: Most entry points into the editor have auto variables that
|
|
// XXX: should trigger Begin/EndUpdateViewBatch() calls that will make
|
|
// XXX: these selection batch calls no-ops.
|
|
// XXX:
|
|
// XXX: I suspect that this was placed here to avoid multiple
|
|
// XXX: selection changed notifications from happening until after
|
|
// XXX: the transaction was done. I suppose that can still happen
|
|
// XXX: if an embedding application called DoTransaction() directly
|
|
// XXX: to pump its own transactions through the system, but in that
|
|
// XXX: case, wouldn't we want to use Begin/EndUpdateViewBatch() or
|
|
// XXX: its auto equivalent AutoUpdateViewBatch to ensure that
|
|
// XXX: selection listeners have access to accurate frame data?
|
|
// XXX:
|
|
// XXX: Note that if we did add Begin/EndUpdateViewBatch() calls
|
|
// XXX: we will need to make sure that they are disabled during
|
|
// XXX: the init of the editor for text widgets to avoid layout
|
|
// XXX: re-entry during initial reflow. - kin
|
|
|
|
// get the selection and start a batch change
|
|
SelectionBatcher selectionBatcher(SelectionRefPtr());
|
|
|
|
nsresult rv;
|
|
if (mTransactionManager) {
|
|
RefPtr<TransactionManager> transactionManager(mTransactionManager);
|
|
rv = transactionManager->DoTransaction(aTxn);
|
|
} else {
|
|
rv = aTxn->DoTransaction();
|
|
}
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
DoAfterDoTransaction(aTxn);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::EnableUndo(bool aEnable)
|
|
{
|
|
// XXX Should we return NS_ERROR_FAILURE if EdnableUndoRedo() or
|
|
// DisableUndoRedo() returns false?
|
|
if (aEnable) {
|
|
DebugOnly<bool> enabledUndoRedo = EnableUndoRedo();
|
|
NS_WARNING_ASSERTION(enabledUndoRedo,
|
|
"Failed to enable undo/redo transactions");
|
|
return NS_OK;
|
|
}
|
|
DebugOnly<bool> disabledUndoRedo = DisableUndoRedo();
|
|
NS_WARNING_ASSERTION(disabledUndoRedo,
|
|
"Failed to disable undo/redo transactions");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetTransactionManager(nsITransactionManager** aTransactionManager)
|
|
{
|
|
if (NS_WARN_IF(!aTransactionManager)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
if (NS_WARN_IF(!mTransactionManager)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
NS_IF_ADDREF(*aTransactionManager = mTransactionManager);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::Undo(uint32_t aCount)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanUndo(bool* aIsEnabled,
|
|
bool* aCanUndo)
|
|
{
|
|
if (NS_WARN_IF(!aIsEnabled) || NS_WARN_IF(!aCanUndo)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
*aCanUndo = CanUndo();
|
|
*aIsEnabled = IsUndoRedoEnabled();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::Redo(uint32_t aCount)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanRedo(bool* aIsEnabled, bool* aCanRedo)
|
|
{
|
|
if (NS_WARN_IF(!aIsEnabled) || NS_WARN_IF(!aCanRedo)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
*aCanRedo = CanRedo();
|
|
*aIsEnabled = IsUndoRedoEnabled();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::BeginTransaction()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eUnknown);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
BeginTransactionInternal();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::BeginTransactionInternal()
|
|
{
|
|
BeginUpdateViewBatch();
|
|
|
|
if (mTransactionManager) {
|
|
RefPtr<TransactionManager> transactionManager(mTransactionManager);
|
|
transactionManager->BeginBatch(nullptr);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::EndTransaction()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eUnknown);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EndTransactionInternal();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::EndTransactionInternal()
|
|
{
|
|
if (mTransactionManager) {
|
|
RefPtr<TransactionManager> transactionManager(mTransactionManager);
|
|
transactionManager->EndBatch(false);
|
|
}
|
|
|
|
EndUpdateViewBatch();
|
|
}
|
|
|
|
void
|
|
EditorBase::BeginPlaceholderTransaction(nsAtom* aTransactionName)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(mPlaceholderBatch >= 0, "negative placeholder batch count!");
|
|
|
|
if (!mPlaceholderBatch) {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfBefore);
|
|
// time to turn on the batch
|
|
BeginUpdateViewBatch();
|
|
mPlaceholderTransaction = nullptr;
|
|
mPlaceholderName = aTransactionName;
|
|
mSelState.emplace();
|
|
mSelState->SaveSelection(SelectionRefPtr());
|
|
// Composition transaction can modify multiple nodes and it merges text
|
|
// node for ime into single text node.
|
|
// So if current selection is into IME text node, it might be failed
|
|
// to restore selection by UndoTransaction.
|
|
// So we need update selection by range updater.
|
|
if (mPlaceholderName == nsGkAtoms::IMETxnName) {
|
|
mRangeUpdater.RegisterSelectionState(*mSelState);
|
|
}
|
|
}
|
|
mPlaceholderBatch++;
|
|
}
|
|
|
|
void
|
|
EditorBase::EndPlaceholderTransaction()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(mPlaceholderBatch > 0,
|
|
"zero or negative placeholder batch count when ending batch!");
|
|
|
|
if (mPlaceholderBatch == 1) {
|
|
// By making the assumption that no reflow happens during the calls
|
|
// to EndUpdateViewBatch and ScrollSelectionIntoView, we are able to
|
|
// allow the selection to cache a frame offset which is used by the
|
|
// caret drawing code. We only enable this cache here; at other times,
|
|
// we have no way to know whether reflow invalidates it
|
|
// See bugs 35296 and 199412.
|
|
SelectionRefPtr()->SetCanCacheFrameOffset(true);
|
|
|
|
// time to turn off the batch
|
|
EndUpdateViewBatch();
|
|
// make sure selection is in view
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
ScrollSelectionIntoView(false);
|
|
|
|
// cached for frame offset are Not available now
|
|
SelectionRefPtr()->SetCanCacheFrameOffset(false);
|
|
|
|
if (mSelState) {
|
|
// we saved the selection state, but never got to hand it to placeholder
|
|
// (else we ould have nulled out this pointer), so destroy it to prevent leaks.
|
|
if (mPlaceholderName == nsGkAtoms::IMETxnName) {
|
|
mRangeUpdater.DropSelectionState(*mSelState);
|
|
}
|
|
mSelState.reset();
|
|
}
|
|
// We might have never made a placeholder if no action took place.
|
|
if (mPlaceholderTransaction) {
|
|
mPlaceholderTransaction->EndPlaceHolderBatch();
|
|
// notify editor observers of action but if composing, it's done by
|
|
// compositionchange event handler.
|
|
if (!mComposition) {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
}
|
|
mPlaceholderTransaction = nullptr;
|
|
} else {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfCancel);
|
|
}
|
|
}
|
|
mPlaceholderBatch--;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetShouldTxnSetSelection(bool aShould)
|
|
{
|
|
MakeThisAllowTransactionsToChangeSelection(aShould);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetDocumentIsEmpty(bool* aDocumentIsEmpty)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
// XXX: The rule system should tell us which node to select all on (ie, the
|
|
// root, or the body)
|
|
NS_IMETHODIMP
|
|
EditorBase::SelectAll()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsresult rv = SelectAllInternal();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::SelectAllInternal()
|
|
{
|
|
MOZ_ASSERT(IsInitialized());
|
|
|
|
CommitComposition();
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_EDITOR_DESTROYED;
|
|
}
|
|
|
|
// XXX Do we need to keep handling after committing composition causes moving
|
|
// focus to different element? Although TextEditor has independent
|
|
// selection, so, we may not see any odd behavior even in such case.
|
|
|
|
nsresult rv = SelectEntireDocument();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::BeginningOfDocument()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// get the root element
|
|
dom::Element* rootElement = GetRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
|
|
|
|
// find first editable thingy
|
|
nsCOMPtr<nsINode> firstNode = GetFirstEditableNode(rootElement);
|
|
if (!firstNode) {
|
|
// just the root node, set selection to inside the root
|
|
return SelectionRefPtr()->Collapse(rootElement, 0);
|
|
}
|
|
|
|
if (firstNode->NodeType() == nsINode::TEXT_NODE) {
|
|
// If firstNode is text, set selection to beginning of the text node.
|
|
return SelectionRefPtr()->Collapse(firstNode, 0);
|
|
}
|
|
|
|
// Otherwise, it's a leaf node and we set the selection just in front of it.
|
|
nsCOMPtr<nsIContent> parent = firstNode->GetParent();
|
|
if (!parent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
MOZ_ASSERT(parent->ComputeIndexOf(firstNode) == 0,
|
|
"How come the first node isn't the left most child in its parent?");
|
|
return SelectionRefPtr()->Collapse(parent, 0);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::EndOfDocument()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
return CollapseSelectionToEnd();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::CollapseSelectionToEnd()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// XXX Why doesn't this check if the document is alive?
|
|
if (NS_WARN_IF(!IsInitialized())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// get the root element
|
|
nsINode* node = GetRoot();
|
|
if (NS_WARN_IF(!node)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsINode* child = node->GetLastChild();
|
|
while (child && IsContainer(child)) {
|
|
node = child;
|
|
child = node->GetLastChild();
|
|
}
|
|
|
|
uint32_t length = node->Length();
|
|
return SelectionRefPtr()->Collapse(node, static_cast<int32_t>(length));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetDocumentModified(bool* outDocModified)
|
|
{
|
|
NS_ENSURE_TRUE(outDocModified, NS_ERROR_NULL_POINTER);
|
|
|
|
int32_t modCount = 0;
|
|
GetModificationCount(&modCount);
|
|
|
|
*outDocModified = (modCount != 0);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetDocumentCharacterSet(nsACString& aCharset)
|
|
{
|
|
return GetDocumentCharsetInternal(aCharset);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::GetDocumentCharsetInternal(nsACString& aCharset) const
|
|
{
|
|
nsCOMPtr<nsIDocument> document = GetDocument();
|
|
if (NS_WARN_IF(!document)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
document->GetDocumentCharacterSet()->Name(aCharset);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetDocumentCharacterSet(const nsACString& characterSet)
|
|
{
|
|
nsCOMPtr<nsIDocument> document = GetDocument();
|
|
if (NS_WARN_IF(!document)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
// This method is scriptable, so add-ons could pass in something other
|
|
// than a canonical name.
|
|
auto encoding = Encoding::ForLabelNoReplacement(characterSet);
|
|
if (!encoding) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
document->SetDocumentCharacterSet(WrapNotNull(encoding));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::Cut()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanCut(bool* aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::Copy()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanCopy(bool* aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanDelete(bool* aCanDelete)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::Paste(int32_t aClipboardType)
|
|
{
|
|
nsresult rv = AsTextEditor()->PasteAsAction(aClipboardType, true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::PasteTransferable(nsITransferable* aTransferable)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CanPaste(int32_t aSelectionType, bool* aCanPaste)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetAttribute(Element* aElement,
|
|
const nsAString& aAttribute,
|
|
const nsAString& aValue)
|
|
{
|
|
if (NS_WARN_IF(aAttribute.IsEmpty())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
if (NS_WARN_IF(!aElement)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<nsAtom> attribute = NS_Atomize(aAttribute);
|
|
return SetAttributeWithTransaction(*aElement, *attribute, aValue);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::SetAttributeWithTransaction(Element& aElement,
|
|
nsAtom& aAttribute,
|
|
const nsAString& aValue)
|
|
{
|
|
RefPtr<ChangeAttributeTransaction> transaction =
|
|
ChangeAttributeTransaction::Create(aElement, aAttribute, aValue);
|
|
return DoTransactionInternal(transaction);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetAttributeValue(Element* aElement,
|
|
const nsAString& aAttribute,
|
|
nsAString& aResultValue,
|
|
bool* aResultIsSet)
|
|
{
|
|
NS_ENSURE_TRUE(aResultIsSet, NS_ERROR_NULL_POINTER);
|
|
*aResultIsSet = false;
|
|
if (!aElement) {
|
|
return NS_OK;
|
|
}
|
|
nsAutoString value;
|
|
aElement->GetAttribute(aAttribute, value);
|
|
if (!DOMStringIsNull(value)) {
|
|
*aResultIsSet = true;
|
|
aResultValue = value;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::RemoveAttribute(Element* aElement,
|
|
const nsAString& aAttribute)
|
|
{
|
|
if (NS_WARN_IF(aAttribute.IsEmpty())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
if (NS_WARN_IF(!aElement)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eRemoveAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<nsAtom> attribute = NS_Atomize(aAttribute);
|
|
return RemoveAttributeWithTransaction(*aElement, *attribute);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::RemoveAttributeWithTransaction(Element& aElement,
|
|
nsAtom& aAttribute)
|
|
{
|
|
// XXX If aElement doesn't have aAttribute, shouldn't we stop creating
|
|
// the transaction? Otherwise, there will be added a transaction
|
|
// which does nothing at doing undo/redo.
|
|
RefPtr<ChangeAttributeTransaction> transaction =
|
|
ChangeAttributeTransaction::CreateToRemove(aElement, aAttribute);
|
|
return DoTransactionInternal(transaction);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::MarkNodeDirty(nsINode* aNode)
|
|
{
|
|
// Mark the node dirty, but not for webpages (bug 599983)
|
|
if (!OutputsMozDirty()) {
|
|
return NS_OK;
|
|
}
|
|
if (RefPtr<Element> element = Element::FromNodeOrNull(aNode)) {
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::mozdirty, EmptyString(),
|
|
false);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetInlineSpellChecker(bool autoCreate,
|
|
nsIInlineSpellChecker** aInlineSpellChecker)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aInlineSpellChecker);
|
|
|
|
if (mDidPreDestroy) {
|
|
// Don't allow people to get or create the spell checker once the editor
|
|
// is going away.
|
|
*aInlineSpellChecker = nullptr;
|
|
return autoCreate ? NS_ERROR_NOT_AVAILABLE : NS_OK;
|
|
}
|
|
|
|
// We don't want to show the spell checking UI if there are no spell check dictionaries available.
|
|
bool canSpell = mozInlineSpellChecker::CanEnableInlineSpellChecking();
|
|
if (!canSpell) {
|
|
*aInlineSpellChecker = nullptr;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (!mInlineSpellChecker && autoCreate) {
|
|
mInlineSpellChecker = new mozInlineSpellChecker();
|
|
}
|
|
|
|
if (mInlineSpellChecker) {
|
|
rv = mInlineSpellChecker->Init(this);
|
|
if (NS_FAILED(rv)) {
|
|
mInlineSpellChecker = nullptr;
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_IF_ADDREF(*aInlineSpellChecker = mInlineSpellChecker);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::SyncRealTimeSpell()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return;
|
|
}
|
|
|
|
bool enable = GetDesiredSpellCheckState();
|
|
|
|
// Initializes mInlineSpellChecker
|
|
nsCOMPtr<nsIInlineSpellChecker> spellChecker;
|
|
GetInlineSpellChecker(enable, getter_AddRefs(spellChecker));
|
|
|
|
if (mInlineSpellChecker) {
|
|
if (!mSpellCheckerDictionaryUpdated && enable) {
|
|
mInlineSpellChecker->UpdateCurrentDictionary();
|
|
mSpellCheckerDictionaryUpdated = true;
|
|
}
|
|
|
|
// We might have a mInlineSpellChecker even if there are no dictionaries
|
|
// available since we don't destroy the mInlineSpellChecker when the last
|
|
// dictionariy is removed, but in that case spellChecker is null
|
|
mInlineSpellChecker->SetEnableRealTimeSpell(enable && spellChecker);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetSpellcheckUserOverride(bool enable)
|
|
{
|
|
mSpellcheckCheckboxState = enable ? eTriTrue : eTriFalse;
|
|
|
|
SyncRealTimeSpell();
|
|
return NS_OK;
|
|
}
|
|
|
|
template<typename PT, typename CT>
|
|
already_AddRefed<Element>
|
|
EditorBase::CreateNodeWithTransaction(
|
|
nsAtom& aTagName,
|
|
const EditorDOMPointBase<PT, CT>& aPointToInsert)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
|
|
// XXX We need offset at new node for mRangeUpdater. Therefore, we need
|
|
// to compute the offset now but this is expensive. So, if it's possible,
|
|
// we need to redesign mRangeUpdater as avoiding using indices.
|
|
Unused << aPointToInsert.Offset();
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eCreateNode,
|
|
nsIEditor::eNext);
|
|
|
|
RefPtr<Element> newElement;
|
|
|
|
RefPtr<CreateElementTransaction> transaction =
|
|
CreateElementTransaction::Create(*this, aTagName, aPointToInsert);
|
|
nsresult rv = DoTransactionInternal(transaction);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
// XXX Why do we do this even when DoTransaction() returned error?
|
|
mRangeUpdater.SelAdjCreateNode(aPointToInsert);
|
|
} else {
|
|
newElement = transaction->GetNewNode();
|
|
MOZ_ASSERT(newElement);
|
|
|
|
// If we succeeded to create and insert new element, we need to adjust
|
|
// ranges in mRangeUpdater. It currently requires offset of the new node.
|
|
// So, let's call it with original offset. Note that if aPointToInsert
|
|
// stores child node, it may not be at the offset since new element must
|
|
// be inserted before the old child. Although, mutation observer can do
|
|
// anything, but currently, we don't check it.
|
|
mRangeUpdater.SelAdjCreateNode(
|
|
EditorRawDOMPoint(aPointToInsert.GetContainer(),
|
|
aPointToInsert.Offset()));
|
|
}
|
|
|
|
if (mRules && mRules->AsHTMLEditRules() && newElement) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidCreateNode(*newElement);
|
|
}
|
|
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidCreateNode(nsDependentAtomString(&aTagName),
|
|
newElement, rv);
|
|
}
|
|
}
|
|
|
|
return newElement.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::InsertNode(nsINode* aNodeToInsert,
|
|
nsINode* aContainer,
|
|
int32_t aOffset)
|
|
{
|
|
nsCOMPtr<nsIContent> contentToInsert = do_QueryInterface(aNodeToInsert);
|
|
if (NS_WARN_IF(!contentToInsert)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (NS_WARN_IF(!aContainer)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eInsertNode);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
int32_t offset =
|
|
aOffset < 0 ? static_cast<int32_t>(aContainer->Length()) :
|
|
std::min(aOffset, static_cast<int32_t>(aContainer->Length()));
|
|
return InsertNodeWithTransaction(*contentToInsert,
|
|
EditorRawDOMPoint(aContainer, offset));
|
|
}
|
|
|
|
template<typename PT, typename CT>
|
|
nsresult
|
|
EditorBase::InsertNodeWithTransaction(
|
|
nsIContent& aContentToInsert,
|
|
const EditorDOMPointBase<PT, CT>& aPointToInsert)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eInsertNode,
|
|
nsIEditor::eNext);
|
|
|
|
RefPtr<InsertNodeTransaction> transaction =
|
|
InsertNodeTransaction::Create(*this, aContentToInsert, aPointToInsert);
|
|
nsresult rv = DoTransactionInternal(transaction);
|
|
|
|
mRangeUpdater.SelAdjInsertNode(aPointToInsert);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidInsertNode(aContentToInsert);
|
|
}
|
|
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidInsertNode(&aContentToInsert, rv);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SplitNode(nsINode* aNode,
|
|
int32_t aOffset,
|
|
nsINode** aNewLeftNode)
|
|
{
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSplitNode);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
int32_t offset = std::min(std::max(aOffset, 0),
|
|
static_cast<int32_t>(aNode->Length()));
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> newNode =
|
|
SplitNodeWithTransaction(EditorRawDOMPoint(aNode, offset), error);
|
|
newNode.forget(aNewLeftNode);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
template<typename PT, typename CT>
|
|
already_AddRefed<nsIContent>
|
|
EditorBase::SplitNodeWithTransaction(
|
|
const EditorDOMPointBase<PT, CT>& aStartOfRightNode,
|
|
ErrorResult& aError)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(!aStartOfRightNode.IsSet()) ||
|
|
NS_WARN_IF(!aStartOfRightNode.GetContainerAsContent())) {
|
|
aError.Throw(NS_ERROR_INVALID_ARG);
|
|
return nullptr;
|
|
}
|
|
MOZ_ASSERT(aStartOfRightNode.IsSetAndValid());
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eSplitNode,
|
|
nsIEditor::eNext);
|
|
|
|
// XXX Unfortunately, storing offset of the split point in
|
|
// SplitNodeTransaction is necessary for now. We should fix this
|
|
// in a follow up bug.
|
|
Unused << aStartOfRightNode.Offset();
|
|
|
|
RefPtr<SplitNodeTransaction> transaction =
|
|
SplitNodeTransaction::Create(*this, aStartOfRightNode);
|
|
aError = DoTransactionInternal(transaction);
|
|
|
|
nsCOMPtr<nsIContent> newNode = transaction->GetNewNode();
|
|
NS_WARNING_ASSERTION(newNode, "Failed to create a new left node");
|
|
|
|
// XXX Some other transactions manage range updater by themselves.
|
|
// Why doesn't SplitNodeTransaction do it?
|
|
mRangeUpdater.SelAdjSplitNode(*aStartOfRightNode.GetContainerAsContent(),
|
|
newNode);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules() && newNode) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidSplitNode(*aStartOfRightNode.GetContainer(), *newNode);
|
|
}
|
|
|
|
if (mInlineSpellChecker) {
|
|
RefPtr<mozInlineSpellChecker> spellChecker = mInlineSpellChecker;
|
|
spellChecker->DidSplitNode(aStartOfRightNode.GetContainer(), newNode);
|
|
}
|
|
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidSplitNode(aStartOfRightNode.GetContainer(), newNode);
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
return newNode.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::JoinNodes(nsINode* aLeftNode,
|
|
nsINode* aRightNode,
|
|
nsINode*)
|
|
{
|
|
if (NS_WARN_IF(!aLeftNode) ||
|
|
NS_WARN_IF(!aRightNode) ||
|
|
NS_WARN_IF(!aLeftNode->GetParentNode())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eJoinNodes);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
return JoinNodesWithTransaction(*aLeftNode, *aRightNode);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::JoinNodesWithTransaction(nsINode& aLeftNode,
|
|
nsINode& aRightNode)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsCOMPtr<nsINode> parent = aLeftNode.GetParentNode();
|
|
MOZ_ASSERT(parent);
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eJoinNodes,
|
|
nsIEditor::ePrevious);
|
|
|
|
// Remember some values; later used for saved selection updating.
|
|
// Find the offset between the nodes to be joined.
|
|
int32_t offset = parent->ComputeIndexOf(&aRightNode);
|
|
// Find the number of children of the lefthand node
|
|
uint32_t oldLeftNodeLen = aLeftNode.Length();
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->WillJoinNodes(aLeftNode, aRightNode);
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
RefPtr<JoinNodeTransaction> transaction =
|
|
JoinNodeTransaction::MaybeCreate(*this, aLeftNode, aRightNode);
|
|
if (transaction) {
|
|
rv = DoTransactionInternal(transaction);
|
|
}
|
|
|
|
// XXX Some other transactions manage range updater by themselves.
|
|
// Why doesn't JoinNodeTransaction do it?
|
|
mRangeUpdater.SelAdjJoinNodes(aLeftNode, aRightNode, *parent, offset,
|
|
(int32_t)oldLeftNodeLen);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidJoinNodes(aLeftNode, aRightNode);
|
|
}
|
|
|
|
if (mInlineSpellChecker) {
|
|
RefPtr<mozInlineSpellChecker> spellChecker = mInlineSpellChecker;
|
|
spellChecker->DidJoinNodes(aLeftNode, aRightNode);
|
|
}
|
|
|
|
if (mTextServicesDocument && NS_SUCCEEDED(rv)) {
|
|
RefPtr<TextServicesDocument> textServicesDocument = mTextServicesDocument;
|
|
textServicesDocument->DidJoinNodes(aLeftNode, aRightNode);
|
|
}
|
|
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidJoinNodes(&aLeftNode, &aRightNode, parent, rv);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::DeleteNode(nsINode* aNode)
|
|
{
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eRemoveNode);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
return DeleteNodeWithTransaction(*aNode);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::DeleteNodeWithTransaction(nsINode& aNode)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eCreateNode,
|
|
nsIEditor::ePrevious);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->WillDeleteNode(aNode);
|
|
}
|
|
|
|
// FYI: DeleteNodeTransaction grabs aNode while it's alive. So, it's safe
|
|
// to refer aNode even after calling DoTransaction().
|
|
RefPtr<DeleteNodeTransaction> deleteNodeTransaction =
|
|
DeleteNodeTransaction::MaybeCreate(*this, aNode);
|
|
nsresult rv =
|
|
deleteNodeTransaction ? DoTransactionInternal(deleteNodeTransaction) :
|
|
NS_ERROR_FAILURE;
|
|
|
|
if (mTextServicesDocument && NS_SUCCEEDED(rv)) {
|
|
RefPtr<TextServicesDocument> textServicesDocument = mTextServicesDocument;
|
|
textServicesDocument->DidDeleteNode(&aNode);
|
|
}
|
|
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidDeleteNode(&aNode, rv);
|
|
}
|
|
}
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
EditorBase::ReplaceContainerWithTransactionInternal(
|
|
Element& aOldContainer,
|
|
nsAtom& aTagName,
|
|
nsAtom& aAttribute,
|
|
const nsAString& aAttributeValue,
|
|
bool aCloneAllAttributes)
|
|
{
|
|
EditorDOMPoint atOldContainer(&aOldContainer);
|
|
if (NS_WARN_IF(!atOldContainer.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<Element> newContainer = CreateHTMLContent(&aTagName);
|
|
if (NS_WARN_IF(!newContainer)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Set or clone attribute if needed.
|
|
if (aCloneAllAttributes) {
|
|
MOZ_ASSERT(&aAttribute == nsGkAtoms::_empty);
|
|
CloneAttributesWithTransaction(*newContainer, aOldContainer);
|
|
} else if (&aAttribute != nsGkAtoms::_empty) {
|
|
nsresult rv =
|
|
newContainer->SetAttr(kNameSpaceID_None, &aAttribute, aAttributeValue,
|
|
true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// Notify our internal selection state listener.
|
|
// Note: An AutoSelectionRestorer object must be created before calling this
|
|
// to initialize mRangeUpdater.
|
|
AutoReplaceContainerSelNotify selStateNotify(mRangeUpdater, &aOldContainer,
|
|
newContainer);
|
|
{
|
|
AutoTransactionsConserveSelection conserveSelection(*this);
|
|
// Move all children from the old container to the new container.
|
|
while (aOldContainer.HasChildren()) {
|
|
nsCOMPtr<nsIContent> child = aOldContainer.GetFirstChild();
|
|
if (NS_WARN_IF(!child)) {
|
|
return nullptr;
|
|
}
|
|
nsresult rv = DeleteNodeWithTransaction(*child);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
rv = InsertNodeWithTransaction(*child,
|
|
EditorRawDOMPoint(newContainer,
|
|
newContainer->Length()));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Insert new container into tree.
|
|
NS_WARNING_ASSERTION(atOldContainer.IsSetAndValid(),
|
|
"The old container might be moved by mutation observer");
|
|
nsresult rv = InsertNodeWithTransaction(*newContainer, atOldContainer);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Delete old container.
|
|
rv = DeleteNodeWithTransaction(aOldContainer);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
return newContainer.forget();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::RemoveContainerWithTransaction(Element& aElement)
|
|
{
|
|
EditorDOMPoint pointToInsertChildren(&aElement);
|
|
if (NS_WARN_IF(!pointToInsertChildren.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Notify our internal selection state listener.
|
|
AutoRemoveContainerSelNotify selNotify(mRangeUpdater, &aElement,
|
|
pointToInsertChildren.GetContainer(),
|
|
pointToInsertChildren.Offset(),
|
|
aElement.GetChildCount());
|
|
|
|
// Move all children from aNode to its parent.
|
|
while (aElement.HasChildren()) {
|
|
nsCOMPtr<nsIContent> child = aElement.GetLastChild();
|
|
if (NS_WARN_IF(!child)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = DeleteNodeWithTransaction(*child);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
// Insert the last child before the previous last child. So, we need to
|
|
// use offset here because previous child might have been moved to
|
|
// container.
|
|
rv = InsertNodeWithTransaction(*child,
|
|
EditorRawDOMPoint(
|
|
pointToInsertChildren.GetContainer(),
|
|
pointToInsertChildren.Offset()));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
nsresult rv = DeleteNodeWithTransaction(aElement);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
EditorBase::InsertContainerWithTransactionInternal(
|
|
nsIContent& aContent,
|
|
nsAtom& aTagName,
|
|
nsAtom& aAttribute,
|
|
const nsAString& aAttributeValue)
|
|
{
|
|
EditorDOMPoint pointToInsertNewContainer(&aContent);
|
|
if (NS_WARN_IF(!pointToInsertNewContainer.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
// aContent will be moved to the new container before inserting the new
|
|
// container. So, when we insert the container, the insertion point
|
|
// is before the next sibling of aContent.
|
|
// XXX If pointerToInsertNewContainer stores offset here, the offset and
|
|
// referring child node become mismatched. Although, currently this
|
|
// is not a problem since InsertNodeTransaction refers only child node.
|
|
DebugOnly<bool> advanced = pointToInsertNewContainer.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset to after aContent");
|
|
|
|
// Create new container.
|
|
RefPtr<Element> newContainer = CreateHTMLContent(&aTagName);
|
|
if (NS_WARN_IF(!newContainer)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Set attribute if needed.
|
|
if (&aAttribute != nsGkAtoms::_empty) {
|
|
nsresult rv =
|
|
newContainer->SetAttr(kNameSpaceID_None, &aAttribute, aAttributeValue,
|
|
true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// Notify our internal selection state listener
|
|
AutoInsertContainerSelNotify selNotify(mRangeUpdater);
|
|
|
|
// Put aNode in the new container, first.
|
|
nsresult rv = DeleteNodeWithTransaction(aContent);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
{
|
|
AutoTransactionsConserveSelection conserveSelection(*this);
|
|
rv = InsertNodeWithTransaction(aContent,
|
|
EditorRawDOMPoint(newContainer, 0));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// Put the new container where aNode was.
|
|
rv = InsertNodeWithTransaction(*newContainer, pointToInsertNewContainer);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
return newContainer.forget();
|
|
}
|
|
|
|
template<typename PT, typename CT>
|
|
nsresult
|
|
EditorBase::MoveNodeWithTransaction(
|
|
nsIContent& aContent,
|
|
const EditorDOMPointBase<PT, CT>& aPointToInsert)
|
|
{
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
|
|
EditorDOMPoint oldPoint(&aContent);
|
|
if (NS_WARN_IF(!oldPoint.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Don't do anything if it's already in right place.
|
|
if (aPointToInsert == oldPoint) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Notify our internal selection state listener
|
|
EditorDOMPoint newPoint(aPointToInsert);
|
|
AutoMoveNodeSelNotify selNotify(mRangeUpdater, oldPoint, newPoint);
|
|
|
|
// Hold a reference so aNode doesn't go away when we remove it (bug 772282)
|
|
nsresult rv = DeleteNodeWithTransaction(aContent);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
// Mutation event listener could break insertion point. Let's check it.
|
|
EditorRawDOMPoint pointToInsert(selNotify.ComputeInsertionPoint());
|
|
if (NS_WARN_IF(!pointToInsert.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// If some children have removed from the container, let's append to the
|
|
// container.
|
|
// XXX Perhaps, if mutation event listener inserts or removes some children
|
|
// but the child node referring with aPointToInsert is still available,
|
|
// we should insert aContent before it. However, we should keep
|
|
// traditional behavior for now.
|
|
if (NS_WARN_IF(!pointToInsert.IsSetAndValid())) {
|
|
pointToInsert.SetToEndOf(pointToInsert.GetContainer());
|
|
}
|
|
rv = InsertNodeWithTransaction(aContent, pointToInsert);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::MoveAllChildren(nsINode& aContainer,
|
|
const EditorRawDOMPoint& aPointToInsert,
|
|
ErrorResult& aError)
|
|
{
|
|
if (!aContainer.HasChildren()) {
|
|
return;
|
|
}
|
|
nsIContent* firstChild = aContainer.GetFirstChild();
|
|
if (NS_WARN_IF(!firstChild)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
nsIContent* lastChild = aContainer.GetLastChild();
|
|
if (NS_WARN_IF(!lastChild)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
return MoveChildren(*firstChild, *lastChild, aPointToInsert, aError);
|
|
}
|
|
|
|
void
|
|
EditorBase::MovePreviousSiblings(nsIContent& aChild,
|
|
const EditorRawDOMPoint& aPointToInsert,
|
|
ErrorResult& aError)
|
|
{
|
|
if (NS_WARN_IF(!aChild.GetParentNode())) {
|
|
aError.Throw(NS_ERROR_INVALID_ARG);
|
|
return;
|
|
}
|
|
nsIContent* firstChild = aChild.GetParentNode()->GetFirstChild();
|
|
if (NS_WARN_IF(!firstChild)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
nsIContent* lastChild =
|
|
&aChild == firstChild ? firstChild : aChild.GetPreviousSibling();
|
|
if (NS_WARN_IF(!lastChild)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
return MoveChildren(*firstChild, *lastChild, aPointToInsert, aError);
|
|
}
|
|
|
|
void
|
|
EditorBase::MoveChildren(nsIContent& aFirstChild,
|
|
nsIContent& aLastChild,
|
|
const EditorRawDOMPoint& aPointToInsert,
|
|
ErrorResult& aError)
|
|
{
|
|
nsCOMPtr<nsINode> oldContainer = aFirstChild.GetParentNode();
|
|
if (NS_WARN_IF(oldContainer != aLastChild.GetParentNode()) ||
|
|
NS_WARN_IF(!aPointToInsert.IsSet()) ||
|
|
NS_WARN_IF(!aPointToInsert.CanContainerHaveChildren())) {
|
|
aError.Throw(NS_ERROR_INVALID_ARG);
|
|
return;
|
|
}
|
|
|
|
// First, store all children which should be moved to the new container.
|
|
AutoTArray<nsCOMPtr<nsIContent>, 10> children;
|
|
for (nsIContent* child = &aFirstChild;
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
children.AppendElement(child);
|
|
if (child == &aLastChild) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(children.LastElement() != &aLastChild)) {
|
|
aError.Throw(NS_ERROR_INVALID_ARG);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> newContainer = aPointToInsert.GetContainer();
|
|
nsCOMPtr<nsIContent> nextNode = aPointToInsert.GetChild();
|
|
for (size_t i = children.Length(); i > 0; --i) {
|
|
nsCOMPtr<nsIContent>& child = children[i - 1];
|
|
if (child->GetParentNode() != oldContainer) {
|
|
// If the child has been moved to different container, we shouldn't
|
|
// touch it.
|
|
continue;
|
|
}
|
|
oldContainer->RemoveChild(*child, aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
if (nextNode) {
|
|
// If we're not appending the children to the new container, we should
|
|
// check if referring next node of insertion point is still in the new
|
|
// container.
|
|
EditorRawDOMPoint pointToInsert(nextNode);
|
|
if (NS_WARN_IF(!pointToInsert.IsSet()) ||
|
|
NS_WARN_IF(pointToInsert.GetContainer() != newContainer)) {
|
|
// The next node of insertion point has been moved by mutation observer.
|
|
// Let's stop moving the remaining nodes.
|
|
// XXX Or should we move remaining children after the last moved child?
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
}
|
|
newContainer->InsertBefore(*child, nextNode, aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
// If the child was inserted or appended properly, the following children
|
|
// should be inserted before it. Otherwise, keep using current position.
|
|
if (child->GetParentNode() == newContainer) {
|
|
nextNode = child;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::AddEditorObserver(nsIEditorObserver* aObserver)
|
|
{
|
|
// we don't keep ownership of the observers. They must
|
|
// remove themselves as observers before they are destroyed.
|
|
|
|
NS_ENSURE_TRUE(aObserver, NS_ERROR_NULL_POINTER);
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (!mEditorObservers.Contains(aObserver)) {
|
|
mEditorObservers.AppendElement(*aObserver);
|
|
NS_WARNING_ASSERTION(mEditorObservers.Length() != 1,
|
|
"nsIEditorObserver installed, this editor becomes slower");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::RemoveEditorObserver(nsIEditorObserver* aObserver)
|
|
{
|
|
NS_ENSURE_TRUE(aObserver, NS_ERROR_FAILURE);
|
|
|
|
NS_WARNING_ASSERTION(mEditorObservers.Length() != 1,
|
|
"All nsIEditorObservers have been removed, this editor becomes faster");
|
|
mEditorObservers.RemoveElement(aObserver);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::NotifySelectionChanged(nsIDocument* aDocument,
|
|
Selection* aSelection,
|
|
int16_t aReason)
|
|
{
|
|
if (NS_WARN_IF(!aDocument) || NS_WARN_IF(!aSelection)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (mTextInputListener) {
|
|
RefPtr<TextInputListener> textInputListener = mTextInputListener;
|
|
textInputListener->OnSelectionChange(*aSelection, aReason);
|
|
}
|
|
|
|
if (mIMEContentObserver) {
|
|
RefPtr<IMEContentObserver> observer = mIMEContentObserver;
|
|
observer->OnSelectionChange(*aSelection);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class EditorInputEventDispatcher final : public Runnable
|
|
{
|
|
public:
|
|
EditorInputEventDispatcher(EditorBase* aEditorBase,
|
|
nsIContent* aTarget,
|
|
bool aIsComposing)
|
|
: Runnable("EditorInputEventDispatcher")
|
|
, mEditorBase(aEditorBase)
|
|
, mTarget(aTarget)
|
|
, mIsComposing(aIsComposing)
|
|
{
|
|
}
|
|
|
|
NS_IMETHOD Run() override
|
|
{
|
|
// Note that we don't need to check mDispatchInputEvent here. We need
|
|
// to check it only when the editor requests to dispatch the input event.
|
|
|
|
if (!mTarget->IsInComposedDoc()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> ps = mEditorBase->GetPresShell();
|
|
if (!ps) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIWidget> widget = mEditorBase->GetWidget();
|
|
if (!widget) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Even if the change is caused by untrusted event, we need to dispatch
|
|
// trusted input event since it's a fact.
|
|
InternalEditorInputEvent inputEvent(true, eEditorInput, widget);
|
|
inputEvent.mTime = static_cast<uint64_t>(PR_Now() / 1000);
|
|
inputEvent.mIsComposing = mIsComposing;
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsresult rv =
|
|
ps->HandleEventWithTarget(&inputEvent, nullptr, mTarget, &status);
|
|
NS_ENSURE_SUCCESS(rv, NS_OK); // print the warning if error
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
RefPtr<EditorBase> mEditorBase;
|
|
nsCOMPtr<nsIContent> mTarget;
|
|
bool mIsComposing;
|
|
};
|
|
|
|
void
|
|
EditorBase::NotifyEditorObservers(NotificationForEditorObservers aNotification)
|
|
{
|
|
switch (aNotification) {
|
|
case eNotifyEditorObserversOfEnd:
|
|
mIsInEditSubAction = false;
|
|
|
|
if (mTextInputListener) {
|
|
RefPtr<TextInputListener> listener = mTextInputListener;
|
|
listener->OnEditActionHandled();
|
|
}
|
|
|
|
if (mIMEContentObserver) {
|
|
RefPtr<IMEContentObserver> observer = mIMEContentObserver;
|
|
observer->OnEditActionHandled();
|
|
}
|
|
|
|
if (!mEditorObservers.IsEmpty()) {
|
|
// Copy the observers since EditAction()s can modify mEditorObservers.
|
|
AutoEditorObserverArray observers(mEditorObservers);
|
|
for (auto& observer : observers) {
|
|
observer->EditAction();
|
|
}
|
|
}
|
|
|
|
if (!mDispatchInputEvent) {
|
|
return;
|
|
}
|
|
|
|
FireInputEvent();
|
|
break;
|
|
case eNotifyEditorObserversOfBefore:
|
|
if (NS_WARN_IF(mIsInEditSubAction)) {
|
|
break;
|
|
}
|
|
|
|
mIsInEditSubAction = true;
|
|
|
|
if (mIMEContentObserver) {
|
|
RefPtr<IMEContentObserver> observer = mIMEContentObserver;
|
|
observer->BeforeEditAction();
|
|
}
|
|
break;
|
|
case eNotifyEditorObserversOfCancel:
|
|
mIsInEditSubAction = false;
|
|
|
|
if (mIMEContentObserver) {
|
|
RefPtr<IMEContentObserver> observer = mIMEContentObserver;
|
|
observer->CancelEditAction();
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Handle all notifications here");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
EditorBase::FireInputEvent()
|
|
{
|
|
// We don't need to dispatch multiple input events if there is a pending
|
|
// input event. However, it may have different event target. If we resolved
|
|
// this issue, we need to manage the pending events in an array. But it's
|
|
// overwork. We don't need to do it for the very rare case.
|
|
|
|
nsCOMPtr<nsIContent> target = GetInputEventTargetContent();
|
|
NS_ENSURE_TRUE_VOID(target);
|
|
|
|
// NOTE: Don't refer IsIMEComposing() because it returns false even before
|
|
// compositionend. However, DOM Level 3 Events defines it should be
|
|
// true after compositionstart and before compositionend.
|
|
nsContentUtils::AddScriptRunner(
|
|
new EditorInputEventDispatcher(this, target, !!GetComposition()));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::AddEditActionListener(nsIEditActionListener* aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
// If given edit action listener is text services document for the inline
|
|
// spell checker, store it as reference of concrete class for performance
|
|
// reason.
|
|
if (mInlineSpellChecker) {
|
|
EditorSpellCheck* editorSpellCheck =
|
|
mInlineSpellChecker->GetEditorSpellCheck();
|
|
if (editorSpellCheck) {
|
|
mozSpellChecker* spellChecker = editorSpellCheck->GetSpellChecker();
|
|
if (spellChecker) {
|
|
TextServicesDocument* textServicesDocument =
|
|
spellChecker->GetTextServicesDocument();
|
|
if (static_cast<nsIEditActionListener*>(textServicesDocument) ==
|
|
aListener) {
|
|
mTextServicesDocument = textServicesDocument;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (!mActionListeners.Contains(aListener)) {
|
|
mActionListeners.AppendElement(*aListener);
|
|
NS_WARNING_ASSERTION(mActionListeners.Length() != 1,
|
|
"nsIEditActionListener installed, this editor becomes slower");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::RemoveEditActionListener(nsIEditActionListener* aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_FAILURE);
|
|
|
|
if (static_cast<nsIEditActionListener*>(mTextServicesDocument) == aListener) {
|
|
mTextServicesDocument = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_WARNING_ASSERTION(mActionListeners.Length() != 1,
|
|
"All nsIEditActionListeners have been removed, this editor becomes faster");
|
|
mActionListeners.RemoveElement(aListener);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::AddDocumentStateListener(nsIDocumentStateListener* aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
if (!mDocStateListeners.Contains(aListener)) {
|
|
mDocStateListeners.AppendElement(*aListener);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::RemoveDocumentStateListener(nsIDocumentStateListener* aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
mDocStateListeners.RemoveElement(aListener);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::OutputToString(const nsAString& aFormatType,
|
|
uint32_t aFlags,
|
|
nsAString& aOutputString)
|
|
{
|
|
// these should be implemented by derived classes.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
bool
|
|
EditorBase::ArePreservingSelection()
|
|
{
|
|
return !(mSavedSel.IsEmpty());
|
|
}
|
|
|
|
void
|
|
EditorBase::PreserveSelectionAcrossActions()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
mSavedSel.SaveSelection(SelectionRefPtr());
|
|
mRangeUpdater.RegisterSelectionState(mSavedSel);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::RestorePreservedSelection()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (mSavedSel.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mSavedSel.RestoreSelection(SelectionRefPtr());
|
|
StopPreservingSelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::StopPreservingSelection()
|
|
{
|
|
mRangeUpdater.DropSelectionState(mSavedSel);
|
|
mSavedSel.MakeEmpty();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::ForceCompositionEnd()
|
|
{
|
|
return CommitComposition();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::CommitComposition()
|
|
{
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
return mComposition ?
|
|
IMEStateManager::NotifyIME(REQUEST_TO_COMMIT_COMPOSITION, pc) : NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::GetPreferredIMEState(IMEState* aState)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
aState->mEnabled = IMEState::ENABLED;
|
|
aState->mOpen = IMEState::DONT_CHANGE_OPEN_STATE;
|
|
|
|
if (IsReadonly() || IsDisabled()) {
|
|
aState->mEnabled = IMEState::DISABLED;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = GetRoot();
|
|
NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
|
|
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
|
|
|
|
switch (frame->StyleUIReset()->mIMEMode) {
|
|
case NS_STYLE_IME_MODE_AUTO:
|
|
if (IsPasswordEditor())
|
|
aState->mEnabled = IMEState::PASSWORD;
|
|
break;
|
|
case NS_STYLE_IME_MODE_DISABLED:
|
|
// we should use password state for |ime-mode: disabled;|.
|
|
aState->mEnabled = IMEState::PASSWORD;
|
|
break;
|
|
case NS_STYLE_IME_MODE_ACTIVE:
|
|
aState->mOpen = IMEState::OPEN;
|
|
break;
|
|
case NS_STYLE_IME_MODE_INACTIVE:
|
|
aState->mOpen = IMEState::CLOSED;
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetComposing(bool* aResult)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aResult);
|
|
*aResult = IsIMEComposing();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetRootElement(Element** aRootElement)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aRootElement);
|
|
NS_ENSURE_TRUE(mRootElement, NS_ERROR_NOT_AVAILABLE);
|
|
RefPtr<Element> rootElement = mRootElement;
|
|
rootElement.forget(aRootElement);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::OnStartToHandleTopLevelEditSubAction(
|
|
EditSubAction aEditSubAction,
|
|
nsIEditor::EDirection aDirection)
|
|
{
|
|
mTopLevelEditSubAction = aEditSubAction;
|
|
mDirection = aDirection;
|
|
}
|
|
|
|
void
|
|
EditorBase::OnEndHandlingTopLevelEditSubAction()
|
|
{
|
|
mTopLevelEditSubAction = EditSubAction::eNone;
|
|
mDirection = eNone;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::CloneAttribute(const nsAString& aAttribute,
|
|
Element* aDestElement,
|
|
Element* aSourceElement)
|
|
{
|
|
NS_ENSURE_TRUE(aDestElement && aSourceElement, NS_ERROR_NULL_POINTER);
|
|
if (NS_WARN_IF(aAttribute.IsEmpty())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<nsAtom> attribute = NS_Atomize(aAttribute);
|
|
return CloneAttributeWithTransaction(*attribute, *aDestElement, *aSourceElement);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::CloneAttributeWithTransaction(nsAtom& aAttribute,
|
|
Element& aDestElement,
|
|
Element& aSourceElement)
|
|
{
|
|
nsAutoString attrValue;
|
|
if (aSourceElement.GetAttr(kNameSpaceID_None, &aAttribute, attrValue)) {
|
|
return SetAttributeWithTransaction(aDestElement, aAttribute, attrValue);
|
|
}
|
|
return RemoveAttributeWithTransaction(aDestElement, aAttribute);
|
|
}
|
|
|
|
/**
|
|
* @param aDest Must be a DOM element.
|
|
* @param aSource Must be a DOM element.
|
|
*/
|
|
NS_IMETHODIMP
|
|
EditorBase::CloneAttributes(Element* aDestElement,
|
|
Element* aSourceElement)
|
|
{
|
|
if (NS_WARN_IF(!aDestElement) || NS_WARN_IF(!aSourceElement)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
CloneAttributesWithTransaction(*aDestElement, *aSourceElement);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::CloneAttributesWithTransaction(Element& aDestElement,
|
|
Element& aSourceElement)
|
|
{
|
|
AutoPlaceholderBatch treatAsOneTransaction(*this);
|
|
|
|
// Use transaction system for undo only if destination is already in the
|
|
// document
|
|
Element* rootElement = GetRoot();
|
|
if (NS_WARN_IF(!rootElement)) {
|
|
return;
|
|
}
|
|
|
|
OwningNonNull<Element> destElement(aDestElement);
|
|
OwningNonNull<Element> sourceElement(aSourceElement);
|
|
bool isDestElementInBody = rootElement->Contains(destElement);
|
|
|
|
// Clear existing attributes
|
|
RefPtr<nsDOMAttributeMap> destAttributes = destElement->Attributes();
|
|
while (RefPtr<Attr> attr = destAttributes->Item(0)) {
|
|
if (isDestElementInBody) {
|
|
RemoveAttributeWithTransaction(destElement,
|
|
*attr->NodeInfo()->NameAtom());
|
|
} else {
|
|
destElement->UnsetAttr(kNameSpaceID_None, attr->NodeInfo()->NameAtom(),
|
|
true);
|
|
}
|
|
}
|
|
|
|
// Set just the attributes that the source element has
|
|
RefPtr<nsDOMAttributeMap> sourceAttributes = sourceElement->Attributes();
|
|
uint32_t sourceCount = sourceAttributes->Length();
|
|
for (uint32_t i = 0; i < sourceCount; i++) {
|
|
RefPtr<Attr> attr = sourceAttributes->Item(i);
|
|
nsAutoString value;
|
|
attr->GetValue(value);
|
|
if (isDestElementInBody) {
|
|
SetAttributeOrEquivalent(destElement, attr->NodeInfo()->NameAtom(), value,
|
|
false);
|
|
} else {
|
|
// The element is not inserted in the document yet, we don't want to put
|
|
// a transaction on the UndoStack
|
|
SetAttributeOrEquivalent(destElement, attr->NodeInfo()->NameAtom(), value,
|
|
true);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::ScrollSelectionIntoView(bool aScrollToAnchor)
|
|
{
|
|
nsISelectionController* selectionController = GetSelectionController();
|
|
if (!selectionController) {
|
|
return NS_OK;
|
|
}
|
|
|
|
int16_t region = nsISelectionController::SELECTION_FOCUS_REGION;
|
|
if (aScrollToAnchor) {
|
|
region = nsISelectionController::SELECTION_ANCHOR_REGION;
|
|
}
|
|
selectionController->ScrollSelectionIntoView(
|
|
nsISelectionController::SELECTION_NORMAL,
|
|
region,
|
|
nsISelectionController::SCROLL_OVERFLOW_HIDDEN);
|
|
return NS_OK;
|
|
}
|
|
|
|
EditorRawDOMPoint
|
|
EditorBase::FindBetterInsertionPoint(const EditorRawDOMPoint& aPoint)
|
|
{
|
|
if (NS_WARN_IF(!aPoint.IsSet())) {
|
|
return aPoint;
|
|
}
|
|
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
|
|
if (aPoint.IsInTextNode()) {
|
|
// There is no "better" insertion point.
|
|
return aPoint;
|
|
}
|
|
|
|
if (!IsPlaintextEditor()) {
|
|
// We cannot find "better" insertion point in HTML editor.
|
|
// WARNING: When you add some code to find better node in HTML editor,
|
|
// you need to call this before calling InsertTextWithTransaction()
|
|
// in HTMLEditRules.
|
|
return aPoint;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> root = GetRoot();
|
|
if (aPoint.GetContainer() == root) {
|
|
// In some cases, aNode is the anonymous DIV, and offset is 0. To avoid
|
|
// injecting unneeded text nodes, we first look to see if we have one
|
|
// available. In that case, we'll just adjust node and offset accordingly.
|
|
if (aPoint.IsStartOfContainer() &&
|
|
aPoint.GetContainer()->HasChildren() &&
|
|
aPoint.GetContainer()->GetFirstChild()->IsText()) {
|
|
return EditorRawDOMPoint(aPoint.GetContainer()->GetFirstChild(), 0);
|
|
}
|
|
|
|
// In some other cases, aNode is the anonymous DIV, and offset points to the
|
|
// terminating mozBR. In that case, we'll adjust aInOutNode and
|
|
// aInOutOffset to the preceding text node, if any.
|
|
if (!aPoint.IsStartOfContainer()) {
|
|
if (AsHTMLEditor()) {
|
|
// Fall back to a slow path that uses GetChildAt_Deprecated() for Thunderbird's
|
|
// plaintext editor.
|
|
nsIContent* child = aPoint.GetPreviousSiblingOfChild();
|
|
if (child && child->IsText()) {
|
|
if (NS_WARN_IF(child->Length() > INT32_MAX)) {
|
|
return aPoint;
|
|
}
|
|
return EditorRawDOMPoint(child, child->Length());
|
|
}
|
|
} else {
|
|
// If we're in a real plaintext editor, use a fast path that avoids
|
|
// calling GetChildAt_Deprecated() which may perform a linear search.
|
|
nsIContent* child = aPoint.GetContainer()->GetLastChild();
|
|
while (child) {
|
|
if (child->IsText()) {
|
|
if (NS_WARN_IF(child->Length() > INT32_MAX)) {
|
|
return aPoint;
|
|
}
|
|
return EditorRawDOMPoint(child, child->Length());
|
|
}
|
|
child = child->GetPreviousSibling();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Sometimes, aNode is the mozBR element itself. In that case, we'll adjust
|
|
// the insertion point to the previous text node, if one exists, or to the
|
|
// parent anonymous DIV.
|
|
if (TextEditUtils::IsMozBR(aPoint.GetContainer()) &&
|
|
aPoint.IsStartOfContainer()) {
|
|
nsIContent* previousSibling = aPoint.GetContainer()->GetPreviousSibling();
|
|
if (previousSibling && previousSibling->IsText()) {
|
|
if (NS_WARN_IF(previousSibling->Length() > INT32_MAX)) {
|
|
return aPoint;
|
|
}
|
|
return EditorRawDOMPoint(previousSibling, previousSibling->Length());
|
|
}
|
|
|
|
nsINode* parentOfContainer = aPoint.GetContainer()->GetParentNode();
|
|
if (parentOfContainer && parentOfContainer == root) {
|
|
return EditorRawDOMPoint(parentOfContainer,
|
|
aPoint.GetContainerAsContent(), 0);
|
|
}
|
|
}
|
|
|
|
return aPoint;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::InsertTextWithTransaction(
|
|
nsIDocument& aDocument,
|
|
const nsAString& aStringToInsert,
|
|
const EditorRawDOMPoint& aPointToInsert,
|
|
EditorRawDOMPoint* aPointAfterInsertedString)
|
|
{
|
|
MOZ_ASSERT(ShouldHandleIMEComposition() ||
|
|
!AllowsTransactionsToChangeSelection(),
|
|
"caller must have already used AutoTransactionsConserveSelection "
|
|
"if this is not for updating composition string");
|
|
|
|
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
|
|
if (!ShouldHandleIMEComposition() && aStringToInsert.IsEmpty()) {
|
|
if (aPointAfterInsertedString) {
|
|
*aPointAfterInsertedString = aPointToInsert;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// This method doesn't support over INT32_MAX length text since aInOutOffset
|
|
// is int32_t*.
|
|
CheckedInt<int32_t> lengthToInsert(aStringToInsert.Length());
|
|
if (NS_WARN_IF(!lengthToInsert.isValid())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// In some cases, the node may be the anonymous div elemnt or a mozBR
|
|
// element. Let's try to look for better insertion point in the nearest
|
|
// text node if there is.
|
|
EditorRawDOMPoint pointToInsert = FindBetterInsertionPoint(aPointToInsert);
|
|
|
|
// If a neighboring text node already exists, use that
|
|
if (!pointToInsert.IsInTextNode()) {
|
|
nsIContent* child = nullptr;
|
|
if (!pointToInsert.IsStartOfContainer() &&
|
|
(child = pointToInsert.GetPreviousSiblingOfChild()) &&
|
|
child->IsText()) {
|
|
pointToInsert.Set(child, child->Length());
|
|
} else if (!pointToInsert.IsEndOfContainer() &&
|
|
(child = pointToInsert.GetChild()) &&
|
|
child->IsText()) {
|
|
pointToInsert.Set(child, 0);
|
|
}
|
|
}
|
|
|
|
if (ShouldHandleIMEComposition()) {
|
|
CheckedInt<int32_t> newOffset;
|
|
if (!pointToInsert.IsInTextNode()) {
|
|
// create a text node
|
|
RefPtr<nsTextNode> newNode =
|
|
EditorBase::CreateTextNode(aDocument, EmptyString());
|
|
// then we insert it into the dom tree
|
|
nsresult rv = InsertNodeWithTransaction(*newNode, pointToInsert);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
pointToInsert.Set(newNode, 0);
|
|
newOffset = lengthToInsert;
|
|
} else {
|
|
newOffset = lengthToInsert + pointToInsert.Offset();
|
|
NS_ENSURE_TRUE(newOffset.isValid(), NS_ERROR_FAILURE);
|
|
}
|
|
nsresult rv =
|
|
InsertTextIntoTextNodeWithTransaction(aStringToInsert,
|
|
*pointToInsert.GetContainerAsText(),
|
|
pointToInsert.Offset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (aPointAfterInsertedString) {
|
|
aPointAfterInsertedString->Set(pointToInsert.GetContainer(),
|
|
newOffset.value());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (pointToInsert.IsInTextNode()) {
|
|
CheckedInt<int32_t> newOffset = lengthToInsert + pointToInsert.Offset();
|
|
NS_ENSURE_TRUE(newOffset.isValid(), NS_ERROR_FAILURE);
|
|
// we are inserting text into an existing text node.
|
|
nsresult rv =
|
|
InsertTextIntoTextNodeWithTransaction(aStringToInsert,
|
|
*pointToInsert.GetContainerAsText(),
|
|
pointToInsert.Offset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (aPointAfterInsertedString) {
|
|
aPointAfterInsertedString->Set(pointToInsert.GetContainer(),
|
|
newOffset.value());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// we are inserting text into a non-text node. first we have to create a
|
|
// textnode (this also populates it with the text)
|
|
RefPtr<nsTextNode> newNode =
|
|
EditorBase::CreateTextNode(aDocument, aStringToInsert);
|
|
// then we insert it into the dom tree
|
|
nsresult rv = InsertNodeWithTransaction(*newNode, pointToInsert);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (aPointAfterInsertedString) {
|
|
aPointAfterInsertedString->Set(newNode, lengthToInsert.value());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::InsertTextIntoTextNodeWithTransaction(
|
|
const nsAString& aStringToInsert,
|
|
Text& aTextNode,
|
|
int32_t aOffset,
|
|
bool aSuppressIME)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
RefPtr<EditTransactionBase> transaction;
|
|
bool isIMETransaction = false;
|
|
RefPtr<Text> insertedTextNode = &aTextNode;
|
|
int32_t insertedOffset = aOffset;
|
|
// aSuppressIME is used when editor must insert text, yet this text is not
|
|
// part of the current IME operation. Example: adjusting whitespace around an
|
|
// IME insertion.
|
|
if (ShouldHandleIMEComposition() && !aSuppressIME) {
|
|
transaction =
|
|
CompositionTransaction::Create(*this, aStringToInsert,
|
|
aTextNode, aOffset);
|
|
isIMETransaction = true;
|
|
// All characters of the composition string will be replaced with
|
|
// aStringToInsert. So, we need to emulate to remove the composition
|
|
// string.
|
|
// FYI: The text node information in mComposition has been updated by
|
|
// CompositionTransaction::Create().
|
|
insertedTextNode = mComposition->GetContainerTextNode();
|
|
insertedOffset = mComposition->XPOffsetInTextNode();
|
|
} else {
|
|
transaction =
|
|
InsertTextTransaction::Create(*this, aStringToInsert, aTextNode, aOffset);
|
|
}
|
|
|
|
// XXX We may not need these view batches anymore. This is handled at a
|
|
// higher level now I believe.
|
|
BeginUpdateViewBatch();
|
|
nsresult rv = DoTransactionInternal(transaction);
|
|
EndUpdateViewBatch();
|
|
|
|
if (mRules && mRules->AsHTMLEditRules() && insertedTextNode) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidInsertText(*insertedTextNode,
|
|
insertedOffset, aStringToInsert);
|
|
}
|
|
|
|
// let listeners know what happened
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidInsertText(insertedTextNode, insertedOffset,
|
|
aStringToInsert, rv);
|
|
}
|
|
}
|
|
|
|
// Added some cruft here for bug 43366. Layout was crashing because we left
|
|
// an empty text node lying around in the document. So I delete empty text
|
|
// nodes caused by IME. I have to mark the IME transaction as "fixed", which
|
|
// means that furure IME txns won't merge with it. This is because we don't
|
|
// want future IME txns trying to put their text into a node that is no
|
|
// longer in the document. This does not break undo/redo, because all these
|
|
// txns are wrapped in a parent PlaceHolder txn, and placeholder txns are
|
|
// already savvy to having multiple ime txns inside them.
|
|
|
|
// Delete empty IME text node if there is one
|
|
if (isIMETransaction && mComposition) {
|
|
Text* textNode = mComposition->GetContainerTextNode();
|
|
if (textNode && !textNode->Length()) {
|
|
DeleteNodeWithTransaction(*textNode);
|
|
mComposition->OnTextNodeRemoved();
|
|
static_cast<CompositionTransaction*>(transaction.get())->MarkFixed();
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::SelectEntireDocument()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
Element* rootElement = GetRoot();
|
|
if (!rootElement) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
ErrorResult errorResult;
|
|
SelectionRefPtr()->SelectAllChildren(*rootElement, errorResult);
|
|
return errorResult.StealNSResult();
|
|
}
|
|
|
|
nsINode*
|
|
EditorBase::GetFirstEditableNode(nsINode* aRoot)
|
|
{
|
|
MOZ_ASSERT(aRoot);
|
|
|
|
nsIContent* node = GetLeftmostChild(aRoot);
|
|
if (node && !IsEditable(node)) {
|
|
node = GetNextEditableNode(*node);
|
|
}
|
|
|
|
return (node != aRoot) ? node : nullptr;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::NotifyDocumentListeners(
|
|
TDocumentListenerNotification aNotificationType)
|
|
{
|
|
if (!mDocStateListeners.Length()) {
|
|
// Maybe there just aren't any.
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoDocumentStateListenerArray listeners(mDocStateListeners);
|
|
nsresult rv = NS_OK;
|
|
|
|
switch (aNotificationType) {
|
|
case eDocumentCreated:
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentCreated();
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDocumentToBeDestroyed:
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentWillBeDestroyed();
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDocumentStateChanged: {
|
|
bool docIsDirty;
|
|
rv = GetDocumentModified(&docIsDirty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (static_cast<int8_t>(docIsDirty) == mDocDirtyState) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mDocDirtyState = docIsDirty;
|
|
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentStateChanged(mDocDirtyState);
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown notification");
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::SetTextImpl(const nsAString& aString,
|
|
Text& aCharData)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
const uint32_t length = aCharData.Length();
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eSetText,
|
|
nsIEditor::eNext);
|
|
|
|
// Let listeners know what's up
|
|
if (!mActionListeners.IsEmpty() && length) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->WillDeleteText(&aCharData, 0, length);
|
|
}
|
|
}
|
|
|
|
// We don't support undo here, so we don't really need all of the transaction
|
|
// machinery, therefore we can run our transaction directly, breaking all of
|
|
// the rules!
|
|
ErrorResult res;
|
|
aCharData.SetData(aString, res);
|
|
nsresult rv = res.StealNSResult();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
{
|
|
// Create a nested scope to not overwrite rv from the outer scope.
|
|
DebugOnly<nsresult> rv =
|
|
SelectionRefPtr()->Collapse(&aCharData, aString.Length());
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),
|
|
"Selection could not be collapsed after insert");
|
|
}
|
|
|
|
mRangeUpdater.SelAdjDeleteText(&aCharData, 0, length);
|
|
mRangeUpdater.SelAdjInsertText(aCharData, 0, aString);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
if (length) {
|
|
htmlEditRules->DidDeleteText(aCharData, 0, length);
|
|
}
|
|
if (!aString.IsEmpty()) {
|
|
htmlEditRules->DidInsertText(aCharData, 0, aString);
|
|
}
|
|
}
|
|
|
|
// Let listeners know what happened
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
if (length) {
|
|
listener->DidDeleteText(&aCharData, 0, length, rv);
|
|
}
|
|
if (!aString.IsEmpty()) {
|
|
listener->DidInsertText(&aCharData, 0, aString, rv);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::DeleteTextWithTransaction(CharacterData& aCharData,
|
|
uint32_t aOffset,
|
|
uint32_t aLength)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
RefPtr<DeleteTextTransaction> transaction =
|
|
DeleteTextTransaction::MaybeCreate(*this, aCharData, aOffset, aLength);
|
|
if (NS_WARN_IF(!transaction)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eDeleteText,
|
|
nsIEditor::ePrevious);
|
|
|
|
// Let listeners know what's up
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->WillDeleteText(&aCharData, aOffset, aLength);
|
|
}
|
|
}
|
|
|
|
nsresult rv = DoTransactionInternal(transaction);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidDeleteText(aCharData, aOffset, aLength);
|
|
}
|
|
|
|
// Let listeners know what happened
|
|
if (!mActionListeners.IsEmpty()) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->DidDeleteText(&aCharData, aOffset, aLength, rv);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
struct SavedRange final
|
|
{
|
|
RefPtr<Selection> mSelection;
|
|
nsCOMPtr<nsINode> mStartContainer;
|
|
nsCOMPtr<nsINode> mEndContainer;
|
|
int32_t mStartOffset;
|
|
int32_t mEndOffset;
|
|
};
|
|
|
|
void
|
|
EditorBase::DoSplitNode(const EditorDOMPoint& aStartOfRightNode,
|
|
nsIContent& aNewLeftNode,
|
|
ErrorResult& aError)
|
|
{
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
|
|
// XXX Perhaps, aStartOfRightNode may be invalid if this is a redo
|
|
// operation after modifying DOM node with JS.
|
|
if (NS_WARN_IF(!aStartOfRightNode.IsSet())) {
|
|
aError.Throw(NS_ERROR_INVALID_ARG);
|
|
return;
|
|
}
|
|
MOZ_ASSERT(aStartOfRightNode.IsSetAndValid());
|
|
|
|
// Remember all selection points.
|
|
AutoTArray<SavedRange, 10> savedRanges;
|
|
for (SelectionType selectionType : kPresentSelectionTypes) {
|
|
SavedRange range;
|
|
range.mSelection = GetSelection(selectionType);
|
|
if (NS_WARN_IF(!range.mSelection &&
|
|
selectionType == SelectionType::eNormal)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
} else if (!range.mSelection) {
|
|
// For non-normal selections, skip over the non-existing ones.
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t j = 0; j < range.mSelection->RangeCount(); ++j) {
|
|
RefPtr<nsRange> r = range.mSelection->GetRangeAt(j);
|
|
MOZ_ASSERT(r->IsPositioned());
|
|
// XXX Looks like that SavedRange should have mStart and mEnd which
|
|
// are RangeBoundary. Then, we can avoid to compute offset here.
|
|
range.mStartContainer = r->GetStartContainer();
|
|
range.mStartOffset = r->StartOffset();
|
|
range.mEndContainer = r->GetEndContainer();
|
|
range.mEndOffset = r->EndOffset();
|
|
|
|
savedRanges.AppendElement(range);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsINode> parent = aStartOfRightNode.GetContainer()->GetParentNode();
|
|
if (NS_WARN_IF(!parent)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
// Fix the child before mutation observer may touch the DOM tree.
|
|
nsIContent* firstChildOfRightNode = aStartOfRightNode.GetChild();
|
|
parent->InsertBefore(aNewLeftNode, aStartOfRightNode.GetContainer(),
|
|
aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
|
|
// At this point, the existing right node has all the children. Move all
|
|
// the children which are before aStartOfRightNode.
|
|
if (!aStartOfRightNode.IsStartOfContainer()) {
|
|
// If it's a text node, just shuffle around some text
|
|
Text* rightAsText = aStartOfRightNode.GetContainerAsText();
|
|
Text* leftAsText = aNewLeftNode.GetAsText();
|
|
if (rightAsText && leftAsText) {
|
|
// Fix right node
|
|
nsAutoString leftText;
|
|
rightAsText->SubstringData(0, aStartOfRightNode.Offset(),
|
|
leftText, IgnoreErrors());
|
|
rightAsText->DeleteData(0, aStartOfRightNode.Offset(), IgnoreErrors());
|
|
// Fix left node
|
|
leftAsText->GetAsText()->SetData(leftText, IgnoreErrors());
|
|
} else {
|
|
MOZ_DIAGNOSTIC_ASSERT(!rightAsText && !leftAsText);
|
|
// Otherwise it's an interior node, so shuffle around the children. Go
|
|
// through list backwards so deletes don't interfere with the iteration.
|
|
if (!firstChildOfRightNode) {
|
|
MoveAllChildren(*aStartOfRightNode.GetContainer(),
|
|
EditorRawDOMPoint(&aNewLeftNode, 0), aError);
|
|
NS_WARNING_ASSERTION(!aError.Failed(),
|
|
"Failed to move all children from the right node to the left node");
|
|
} else if (NS_WARN_IF(aStartOfRightNode.GetContainer() !=
|
|
firstChildOfRightNode->GetParentNode())) {
|
|
// firstChildOfRightNode has been moved by mutation observer.
|
|
// In this case, we what should we do? Use offset? But we cannot
|
|
// check if the offset is still expected.
|
|
} else {
|
|
MovePreviousSiblings(*firstChildOfRightNode,
|
|
EditorRawDOMPoint(&aNewLeftNode, 0), aError);
|
|
NS_WARNING_ASSERTION(!aError.Failed(),
|
|
"Failed to move some children from the right node to the left node");
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX Why do we ignore an error while moving nodes from the right node to
|
|
// the left node?
|
|
aError.SuppressException();
|
|
|
|
// Handle selection
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
if (ps) {
|
|
ps->FlushPendingNotifications(FlushType::Frames);
|
|
}
|
|
NS_WARNING_ASSERTION(!Destroyed(),
|
|
"The editor is destroyed during splitting a node");
|
|
|
|
bool allowedTransactionsToChangeSelection =
|
|
AllowsTransactionsToChangeSelection();
|
|
|
|
RefPtr<Selection> previousSelection;
|
|
for (size_t i = 0; i < savedRanges.Length(); ++i) {
|
|
// Adjust the selection if needed.
|
|
SavedRange& range = savedRanges[i];
|
|
|
|
// If we have not seen the selection yet, clear all of its ranges.
|
|
if (range.mSelection != previousSelection) {
|
|
range.mSelection->RemoveAllRanges(aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
previousSelection = range.mSelection;
|
|
}
|
|
|
|
// XXX Looks like that we don't need to modify normal selection here
|
|
// because selection will be modified by the caller if
|
|
// AllowsTransactionsToChangeSelection() will return true.
|
|
if (allowedTransactionsToChangeSelection &&
|
|
range.mSelection->Type() == SelectionType::eNormal) {
|
|
// If the editor should adjust the selection, don't bother restoring
|
|
// the ranges for the normal selection here.
|
|
continue;
|
|
}
|
|
|
|
// Split the selection into existing node and new node.
|
|
if (range.mStartContainer == aStartOfRightNode.GetContainer()) {
|
|
if (static_cast<uint32_t>(range.mStartOffset) <
|
|
aStartOfRightNode.Offset()) {
|
|
range.mStartContainer = &aNewLeftNode;
|
|
} else {
|
|
range.mStartOffset -= aStartOfRightNode.Offset();
|
|
}
|
|
}
|
|
|
|
if (range.mEndContainer == aStartOfRightNode.GetContainer()) {
|
|
if (static_cast<uint32_t>(range.mEndOffset) <
|
|
aStartOfRightNode.Offset()) {
|
|
range.mEndContainer = &aNewLeftNode;
|
|
} else {
|
|
range.mEndOffset -= aStartOfRightNode.Offset();
|
|
}
|
|
}
|
|
|
|
RefPtr<nsRange> newRange;
|
|
nsresult rv = nsRange::CreateRange(range.mStartContainer,
|
|
range.mStartOffset,
|
|
range.mEndContainer,
|
|
range.mEndOffset,
|
|
getter_AddRefs(newRange));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
aError.Throw(rv);
|
|
return;
|
|
}
|
|
range.mSelection->AddRange(*newRange, aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We don't need to set selection here because the caller should do that
|
|
// in any case.
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::DoJoinNodes(nsINode* aNodeToKeep,
|
|
nsINode* aNodeToJoin,
|
|
nsINode* aParent)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
MOZ_ASSERT(aNodeToKeep);
|
|
MOZ_ASSERT(aNodeToJoin);
|
|
MOZ_ASSERT(aParent);
|
|
|
|
uint32_t firstNodeLength = aNodeToJoin->Length();
|
|
|
|
int32_t joinOffset;
|
|
GetNodeLocation(aNodeToJoin, &joinOffset);
|
|
int32_t keepOffset;
|
|
nsINode* parent = GetNodeLocation(aNodeToKeep, &keepOffset);
|
|
|
|
// Remember all selection points.
|
|
AutoTArray<SavedRange, 10> savedRanges;
|
|
for (SelectionType selectionType : kPresentSelectionTypes) {
|
|
SavedRange range;
|
|
range.mSelection = GetSelection(selectionType);
|
|
if (selectionType == SelectionType::eNormal) {
|
|
NS_ENSURE_TRUE(range.mSelection, NS_ERROR_NULL_POINTER);
|
|
} else if (!range.mSelection) {
|
|
// For non-normal selections, skip over the non-existing ones.
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t j = 0; j < range.mSelection->RangeCount(); ++j) {
|
|
RefPtr<nsRange> r = range.mSelection->GetRangeAt(j);
|
|
MOZ_ASSERT(r->IsPositioned());
|
|
range.mStartContainer = r->GetStartContainer();
|
|
range.mStartOffset = r->StartOffset();
|
|
range.mEndContainer = r->GetEndContainer();
|
|
range.mEndOffset = r->EndOffset();
|
|
|
|
// If selection endpoint is between the nodes, remember it as being
|
|
// in the one that is going away instead. This simplifies later selection
|
|
// adjustment logic at end of this method.
|
|
if (range.mStartContainer) {
|
|
if (range.mStartContainer == parent &&
|
|
joinOffset < range.mStartOffset &&
|
|
range.mStartOffset <= keepOffset) {
|
|
range.mStartContainer = aNodeToJoin;
|
|
range.mStartOffset = firstNodeLength;
|
|
}
|
|
if (range.mEndContainer == parent &&
|
|
joinOffset < range.mEndOffset &&
|
|
range.mEndOffset <= keepOffset) {
|
|
range.mEndContainer = aNodeToJoin;
|
|
range.mEndOffset = firstNodeLength;
|
|
}
|
|
}
|
|
|
|
savedRanges.AppendElement(range);
|
|
}
|
|
}
|
|
|
|
// OK, ready to do join now.
|
|
// If it's a text node, just shuffle around some text.
|
|
if (IsTextNode(aNodeToKeep) && IsTextNode(aNodeToJoin)) {
|
|
nsAutoString rightText;
|
|
nsAutoString leftText;
|
|
aNodeToKeep->GetAsText()->GetData(rightText);
|
|
aNodeToJoin->GetAsText()->GetData(leftText);
|
|
leftText += rightText;
|
|
aNodeToKeep->GetAsText()->SetData(leftText, IgnoreErrors());
|
|
} else {
|
|
// Otherwise it's an interior node, so shuffle around the children.
|
|
nsCOMPtr<nsINodeList> childNodes = aNodeToJoin->ChildNodes();
|
|
MOZ_ASSERT(childNodes);
|
|
|
|
// Remember the first child in aNodeToKeep, we'll insert all the children of aNodeToJoin in front of it
|
|
// GetFirstChild returns nullptr firstNode if aNodeToKeep has no children, that's OK.
|
|
nsCOMPtr<nsIContent> firstNode = aNodeToKeep->GetFirstChild();
|
|
|
|
// Have to go through the list backwards to keep deletes from interfering with iteration.
|
|
for (uint32_t i = childNodes->Length(); i; --i) {
|
|
nsCOMPtr<nsIContent> childNode = childNodes->Item(i - 1);
|
|
if (childNode) {
|
|
// prepend children of aNodeToJoin
|
|
ErrorResult err;
|
|
aNodeToKeep->InsertBefore(*childNode, firstNode, err);
|
|
NS_ENSURE_TRUE(!err.Failed(), err.StealNSResult());
|
|
firstNode = childNode.forget();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete the extra node.
|
|
ErrorResult err;
|
|
aParent->RemoveChild(*aNodeToJoin, err);
|
|
|
|
bool allowedTransactionsToChangeSelection =
|
|
AllowsTransactionsToChangeSelection();
|
|
|
|
RefPtr<Selection> previousSelection;
|
|
for (size_t i = 0; i < savedRanges.Length(); ++i) {
|
|
// And adjust the selection if needed.
|
|
SavedRange& range = savedRanges[i];
|
|
|
|
// If we have not seen the selection yet, clear all of its ranges.
|
|
if (range.mSelection != previousSelection) {
|
|
ErrorResult rv;
|
|
range.mSelection->RemoveAllRanges(rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
return rv.StealNSResult();
|
|
}
|
|
previousSelection = range.mSelection;
|
|
}
|
|
|
|
if (allowedTransactionsToChangeSelection &&
|
|
range.mSelection->Type() == SelectionType::eNormal) {
|
|
// If the editor should adjust the selection, don't bother restoring
|
|
// the ranges for the normal selection here.
|
|
continue;
|
|
}
|
|
|
|
// Check to see if we joined nodes where selection starts.
|
|
if (range.mStartContainer == aNodeToJoin) {
|
|
range.mStartContainer = aNodeToKeep;
|
|
} else if (range.mStartContainer == aNodeToKeep) {
|
|
range.mStartOffset += firstNodeLength;
|
|
}
|
|
|
|
// Check to see if we joined nodes where selection ends.
|
|
if (range.mEndContainer == aNodeToJoin) {
|
|
range.mEndContainer = aNodeToKeep;
|
|
} else if (range.mEndContainer == aNodeToKeep) {
|
|
range.mEndOffset += firstNodeLength;
|
|
}
|
|
|
|
RefPtr<nsRange> newRange;
|
|
nsresult rv = nsRange::CreateRange(range.mStartContainer,
|
|
range.mStartOffset,
|
|
range.mEndContainer,
|
|
range.mEndOffset,
|
|
getter_AddRefs(newRange));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
ErrorResult err;
|
|
range.mSelection->AddRange(*newRange, err);
|
|
if (NS_WARN_IF(err.Failed())) {
|
|
return err.StealNSResult();
|
|
}
|
|
}
|
|
|
|
if (allowedTransactionsToChangeSelection) {
|
|
// Editor wants us to set selection at join point.
|
|
DebugOnly<nsresult> rv =
|
|
SelectionRefPtr()->Collapse(aNodeToKeep,
|
|
AssertedCast<int32_t>(firstNodeLength));
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"Failed to collapse Selection at end of the node");
|
|
}
|
|
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
// static
|
|
int32_t
|
|
EditorBase::GetChildOffset(nsINode* aChild,
|
|
nsINode* aParent)
|
|
{
|
|
MOZ_ASSERT(aChild);
|
|
MOZ_ASSERT(aParent);
|
|
|
|
// nsINode::ComputeIndexOf() is expensive. So, if we can return index
|
|
// without calling it, we should do that.
|
|
|
|
// If there is no previous siblings, it means that it's the first child.
|
|
if (aParent->GetFirstChild() == aChild) {
|
|
MOZ_ASSERT(aParent->ComputeIndexOf(aChild) == 0);
|
|
return 0;
|
|
}
|
|
|
|
// If there is no next siblings, it means that it's the last child.
|
|
if (aParent->GetLastChild() == aChild) {
|
|
int32_t lastChildIndex = static_cast<int32_t>(aParent->Length() - 1);
|
|
MOZ_ASSERT(aParent->ComputeIndexOf(aChild) == lastChildIndex);
|
|
return lastChildIndex;
|
|
}
|
|
|
|
int32_t index = aParent->ComputeIndexOf(aChild);
|
|
MOZ_ASSERT(index != -1);
|
|
return index;
|
|
}
|
|
|
|
// static
|
|
nsINode*
|
|
EditorBase::GetNodeLocation(nsINode* aChild,
|
|
int32_t* aOffset)
|
|
{
|
|
MOZ_ASSERT(aChild);
|
|
MOZ_ASSERT(aOffset);
|
|
|
|
nsINode* parent = aChild->GetParentNode();
|
|
if (parent) {
|
|
*aOffset = GetChildOffset(aChild, parent);
|
|
MOZ_ASSERT(*aOffset != -1);
|
|
} else {
|
|
*aOffset = -1;
|
|
}
|
|
return parent;
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetPreviousNodeInternal(nsINode& aNode,
|
|
bool aFindEditableNode,
|
|
bool aFindAnyDataNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
if (!IsDescendantOfEditorRoot(&aNode)) {
|
|
return nullptr;
|
|
}
|
|
return FindNode(&aNode, false,
|
|
aFindEditableNode, aFindAnyDataNode, aNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetPreviousNodeInternal(const EditorRawDOMPoint& aPoint,
|
|
bool aFindEditableNode,
|
|
bool aFindAnyDataNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
NS_WARNING_ASSERTION(!aPoint.IsInDataNode() || aPoint.IsInTextNode(),
|
|
"GetPreviousNodeInternal() doesn't assume that the start point is a "
|
|
"data node except text node");
|
|
|
|
// If we are at the beginning of the node, or it is a text node, then just
|
|
// look before it.
|
|
if (aPoint.IsStartOfContainer() || aPoint.IsInTextNode()) {
|
|
if (aNoBlockCrossing && IsBlockNode(aPoint.GetContainer())) {
|
|
// If we aren't allowed to cross blocks, don't look before this block.
|
|
return nullptr;
|
|
}
|
|
return GetPreviousNodeInternal(*aPoint.GetContainer(),
|
|
aFindEditableNode, aFindAnyDataNode,
|
|
aNoBlockCrossing);
|
|
}
|
|
|
|
// else look before the child at 'aOffset'
|
|
if (aPoint.GetChild()) {
|
|
return GetPreviousNodeInternal(*aPoint.GetChild(),
|
|
aFindEditableNode, aFindAnyDataNode,
|
|
aNoBlockCrossing);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the deep-right child.
|
|
nsIContent* rightMostNode =
|
|
GetRightmostChild(aPoint.GetContainer(), aNoBlockCrossing);
|
|
if (!rightMostNode) {
|
|
return nullptr;
|
|
}
|
|
|
|
if ((!aFindEditableNode || IsEditable(rightMostNode)) &&
|
|
(aFindAnyDataNode || IsElementOrText(*rightMostNode))) {
|
|
return rightMostNode;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return GetPreviousNodeInternal(*rightMostNode,
|
|
aFindEditableNode, aFindAnyDataNode,
|
|
aNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetNextNodeInternal(nsINode& aNode,
|
|
bool aFindEditableNode,
|
|
bool aFindAnyDataNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
if (!IsDescendantOfEditorRoot(&aNode)) {
|
|
return nullptr;
|
|
}
|
|
return FindNode(&aNode, true,
|
|
aFindEditableNode, aFindAnyDataNode, aNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetNextNodeInternal(const EditorRawDOMPoint& aPoint,
|
|
bool aFindEditableNode,
|
|
bool aFindAnyDataNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
NS_WARNING_ASSERTION(!aPoint.IsInDataNode() || aPoint.IsInTextNode(),
|
|
"GetNextNodeInternal() doesn't assume that the start point is a "
|
|
"data node except text node");
|
|
|
|
EditorRawDOMPoint point(aPoint);
|
|
|
|
// if the container is a text node, use its location instead
|
|
if (point.IsInTextNode()) {
|
|
point.Set(point.GetContainer());
|
|
bool advanced = point.AdvanceOffset();
|
|
if (NS_WARN_IF(!advanced)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (point.GetChild()) {
|
|
if (aNoBlockCrossing && IsBlockNode(point.GetChild())) {
|
|
return point.GetChild();
|
|
}
|
|
|
|
nsIContent* leftMostNode =
|
|
GetLeftmostChild(point.GetChild(), aNoBlockCrossing);
|
|
if (!leftMostNode) {
|
|
return point.GetChild();
|
|
}
|
|
|
|
if (!IsDescendantOfEditorRoot(leftMostNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if ((!aFindEditableNode || IsEditable(leftMostNode)) &&
|
|
(aFindAnyDataNode || IsElementOrText(*leftMostNode))) {
|
|
return leftMostNode;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return GetNextNodeInternal(*leftMostNode,
|
|
aFindEditableNode, aFindAnyDataNode,
|
|
aNoBlockCrossing);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the next one.
|
|
if (aNoBlockCrossing && IsBlockNode(point.GetContainer())) {
|
|
// don't cross out of parent block
|
|
return nullptr;
|
|
}
|
|
|
|
return GetNextNodeInternal(*point.GetContainer(),
|
|
aFindEditableNode, aFindAnyDataNode,
|
|
aNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::FindNextLeafNode(nsINode* aCurrentNode,
|
|
bool aGoForward,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
// called only by GetPriorNode so we don't need to check params.
|
|
MOZ_ASSERT(IsDescendantOfEditorRoot(aCurrentNode) &&
|
|
!IsEditorRoot(aCurrentNode),
|
|
"Bogus arguments");
|
|
|
|
nsINode* cur = aCurrentNode;
|
|
for (;;) {
|
|
// if aCurrentNode has a sibling in the right direction, return
|
|
// that sibling's closest child (or itself if it has no children)
|
|
nsIContent* sibling =
|
|
aGoForward ? cur->GetNextSibling() : cur->GetPreviousSibling();
|
|
if (sibling) {
|
|
if (bNoBlockCrossing && IsBlockNode(sibling)) {
|
|
// don't look inside prevsib, since it is a block
|
|
return sibling;
|
|
}
|
|
nsIContent *leaf =
|
|
aGoForward ? GetLeftmostChild(sibling, bNoBlockCrossing) :
|
|
GetRightmostChild(sibling, bNoBlockCrossing);
|
|
if (!leaf) {
|
|
return sibling;
|
|
}
|
|
|
|
return leaf;
|
|
}
|
|
|
|
nsINode *parent = cur->GetParentNode();
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ASSERTION(IsDescendantOfEditorRoot(parent),
|
|
"We started with a proper descendant of root, and should stop "
|
|
"if we ever hit the root, so we better have a descendant of "
|
|
"root now!");
|
|
if (IsEditorRoot(parent) ||
|
|
(bNoBlockCrossing && IsBlockNode(parent))) {
|
|
return nullptr;
|
|
}
|
|
|
|
cur = parent;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::FindNode(nsINode* aCurrentNode,
|
|
bool aGoForward,
|
|
bool aEditableNode,
|
|
bool aFindAnyDataNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
if (IsEditorRoot(aCurrentNode)) {
|
|
// Don't allow traversal above the root node! This helps
|
|
// prevent us from accidentally editing browser content
|
|
// when the editor is in a text widget.
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> candidate =
|
|
FindNextLeafNode(aCurrentNode, aGoForward, bNoBlockCrossing);
|
|
|
|
if (!candidate) {
|
|
return nullptr;
|
|
}
|
|
|
|
if ((!aEditableNode || IsEditable(candidate)) &&
|
|
(aFindAnyDataNode || IsElementOrText(*candidate))) {
|
|
return candidate;
|
|
}
|
|
|
|
return FindNode(candidate, aGoForward,
|
|
aEditableNode, aFindAnyDataNode, bNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetRightmostChild(nsINode* aCurrentNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
NS_ENSURE_TRUE(aCurrentNode, nullptr);
|
|
nsIContent *cur = aCurrentNode->GetLastChild();
|
|
if (!cur) {
|
|
return nullptr;
|
|
}
|
|
for (;;) {
|
|
if (bNoBlockCrossing && IsBlockNode(cur)) {
|
|
return cur;
|
|
}
|
|
nsIContent* next = cur->GetLastChild();
|
|
if (!next) {
|
|
return cur;
|
|
}
|
|
cur = next;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetLeftmostChild(nsINode* aCurrentNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
NS_ENSURE_TRUE(aCurrentNode, nullptr);
|
|
nsIContent *cur = aCurrentNode->GetFirstChild();
|
|
if (!cur) {
|
|
return nullptr;
|
|
}
|
|
for (;;) {
|
|
if (bNoBlockCrossing && IsBlockNode(cur)) {
|
|
return cur;
|
|
}
|
|
nsIContent *next = cur->GetFirstChild();
|
|
if (!next) {
|
|
return cur;
|
|
}
|
|
cur = next;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsBlockNode(nsINode* aNode)
|
|
{
|
|
// stub to be overridden in HTMLEditor.
|
|
// screwing around with the class hierarchy here in order
|
|
// to not duplicate the code in GetNextNode/GetPrevNode
|
|
// across both EditorBase/HTMLEditor.
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EditorBase::CanContain(nsINode& aParent,
|
|
nsIContent& aChild) const
|
|
{
|
|
switch (aParent.NodeType()) {
|
|
case nsINode::ELEMENT_NODE:
|
|
case nsINode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContain(*aParent.NodeInfo()->NameAtom(), aChild);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EditorBase::CanContainTag(nsINode& aParent,
|
|
nsAtom& aChildTag) const
|
|
{
|
|
switch (aParent.NodeType()) {
|
|
case nsINode::ELEMENT_NODE:
|
|
case nsINode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContainTag(*aParent.NodeInfo()->NameAtom(), aChildTag);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EditorBase::TagCanContain(nsAtom& aParentTag,
|
|
nsIContent& aChild) const
|
|
{
|
|
switch (aChild.NodeType()) {
|
|
case nsINode::TEXT_NODE:
|
|
case nsINode::ELEMENT_NODE:
|
|
case nsINode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContainTag(aParentTag, *aChild.NodeInfo()->NameAtom());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EditorBase::TagCanContainTag(nsAtom& aParentTag,
|
|
nsAtom& aChildTag) const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsRoot(nsINode* inNode) const
|
|
{
|
|
if (NS_WARN_IF(!inNode)) {
|
|
return false;
|
|
}
|
|
nsINode* rootNode = GetRoot();
|
|
return inNode == rootNode;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsEditorRoot(nsINode* aNode) const
|
|
{
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return false;
|
|
}
|
|
nsINode* rootNode = GetEditorRoot();
|
|
return aNode == rootNode;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsDescendantOfRoot(nsINode* inNode) const
|
|
{
|
|
if (NS_WARN_IF(!inNode)) {
|
|
return false;
|
|
}
|
|
nsIContent* root = GetRoot();
|
|
if (NS_WARN_IF(!root)) {
|
|
return false;
|
|
}
|
|
|
|
return nsContentUtils::ContentIsDescendantOf(inNode, root);
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsDescendantOfEditorRoot(nsINode* aNode) const
|
|
{
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return false;
|
|
}
|
|
nsIContent* root = GetEditorRoot();
|
|
if (NS_WARN_IF(!root)) {
|
|
return false;
|
|
}
|
|
|
|
return nsContentUtils::ContentIsDescendantOf(aNode, root);
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsContainer(nsINode* aNode)
|
|
{
|
|
return aNode ? true : false;
|
|
}
|
|
|
|
uint32_t
|
|
EditorBase::CountEditableChildren(nsINode* aNode)
|
|
{
|
|
MOZ_ASSERT(aNode);
|
|
uint32_t count = 0;
|
|
for (nsIContent* child = aNode->GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
if (IsEditable(child)) {
|
|
++count;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::IncrementModificationCount(int32_t inNumMods)
|
|
{
|
|
uint32_t oldModCount = mModCount;
|
|
|
|
mModCount += inNumMods;
|
|
|
|
if ((!oldModCount && mModCount) ||
|
|
(oldModCount && !mModCount)) {
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::GetModificationCount(int32_t* outModCount)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(outModCount);
|
|
*outModCount = mModCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::ResetModificationCount()
|
|
{
|
|
bool doNotify = (mModCount != 0);
|
|
|
|
mModCount = 0;
|
|
|
|
if (doNotify) {
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
bool
|
|
EditorBase::AreNodesSameType(nsIContent& aNode1,
|
|
nsIContent& aNode2) const
|
|
{
|
|
if (aNode1.NodeInfo()->NameAtom() != aNode2.NodeInfo()->NameAtom()) {
|
|
return false;
|
|
}
|
|
if (!AsHTMLEditor() || !AsHTMLEditor()->IsCSSEnabled()) {
|
|
return true;
|
|
}
|
|
// If this is an HTMLEditor in CSS mode and they are <span> elements,
|
|
// let's check their styles.
|
|
if (!aNode1.IsHTMLElement(nsGkAtoms::span)) {
|
|
return true;
|
|
}
|
|
if (!aNode1.IsElement() || !aNode2.IsElement()) {
|
|
return false;
|
|
}
|
|
return CSSEditUtils::ElementsSameStyle(aNode1.AsElement(),
|
|
aNode2.AsElement());
|
|
}
|
|
|
|
// static
|
|
nsIContent*
|
|
EditorBase::GetNodeAtRangeOffsetPoint(const RawRangeBoundary& aPoint)
|
|
{
|
|
if (NS_WARN_IF(!aPoint.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
if (aPoint.Container()->GetAsText()) {
|
|
return aPoint.Container()->AsContent();
|
|
}
|
|
return aPoint.GetChildAtOffset();
|
|
}
|
|
|
|
// static
|
|
EditorRawDOMPoint
|
|
EditorBase::GetStartPoint(const Selection& aSelection)
|
|
{
|
|
if (NS_WARN_IF(!aSelection.RangeCount())) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
|
|
const nsRange* range = aSelection.GetRangeAt(0);
|
|
if (NS_WARN_IF(!range) ||
|
|
NS_WARN_IF(!range->IsPositioned())) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
|
|
return EditorRawDOMPoint(range->StartRef());
|
|
}
|
|
|
|
// static
|
|
EditorRawDOMPoint
|
|
EditorBase::GetEndPoint(const Selection& aSelection)
|
|
{
|
|
if (NS_WARN_IF(!aSelection.RangeCount())) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
|
|
const nsRange* range = aSelection.GetRangeAt(0);
|
|
if (NS_WARN_IF(!range) ||
|
|
NS_WARN_IF(!range->IsPositioned())) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
|
|
return EditorRawDOMPoint(range->EndRef());
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
EditorBase::GetEndChildNode(const Selection& aSelection,
|
|
nsIContent** aEndNode)
|
|
{
|
|
MOZ_ASSERT(aEndNode);
|
|
|
|
*aEndNode = nullptr;
|
|
|
|
if (NS_WARN_IF(!aSelection.RangeCount())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const nsRange* range = aSelection.GetRangeAt(0);
|
|
if (NS_WARN_IF(!range)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(!range->IsPositioned())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IF_ADDREF(*aEndNode = range->GetChildAtEndOffset());
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* IsPreformatted() checks the style info for the node for the preformatted
|
|
* text style.
|
|
*/
|
|
// static
|
|
bool
|
|
EditorBase::IsPreformatted(nsINode* aNode)
|
|
{
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return false;
|
|
}
|
|
// Look at the node (and its parent if it's not an element), and grab its
|
|
// ComputedStyle.
|
|
Element* element = Element::FromNode(aNode);
|
|
if (!element) {
|
|
element = aNode->GetParentElement();
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
RefPtr<ComputedStyle> elementStyle =
|
|
nsComputedDOMStyle::GetComputedStyleNoFlush(element, nullptr);
|
|
if (!elementStyle) {
|
|
// Consider nodes without a ComputedStyle to be NOT preformatted:
|
|
// For instance, this is true of JS tags inside the body (which show
|
|
// up as #text nodes but have no ComputedStyle).
|
|
return false;
|
|
}
|
|
|
|
const nsStyleText* styleText = elementStyle->StyleText();
|
|
|
|
return styleText->WhiteSpaceIsSignificant();
|
|
}
|
|
|
|
template<typename PT, typename CT>
|
|
SplitNodeResult
|
|
EditorBase::SplitNodeDeepWithTransaction(
|
|
nsIContent& aMostAncestorToSplit,
|
|
const EditorDOMPointBase<PT, CT>& aStartOfDeepestRightNode,
|
|
SplitAtEdges aSplitAtEdges)
|
|
{
|
|
MOZ_ASSERT(aStartOfDeepestRightNode.IsSetAndValid());
|
|
MOZ_ASSERT(aStartOfDeepestRightNode.GetContainer() == &aMostAncestorToSplit ||
|
|
EditorUtils::IsDescendantOf(
|
|
*aStartOfDeepestRightNode.GetContainer(),
|
|
aMostAncestorToSplit));
|
|
|
|
if (NS_WARN_IF(!aStartOfDeepestRightNode.IsSet())) {
|
|
return SplitNodeResult(NS_ERROR_INVALID_ARG);
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> newLeftNodeOfMostAncestor;
|
|
EditorDOMPoint atStartOfRightNode(aStartOfDeepestRightNode);
|
|
while (true) {
|
|
// Need to insert rules code call here to do things like not split a list
|
|
// if you are after the last <li> or before the first, etc. For now we
|
|
// just have some smarts about unneccessarily splitting text nodes, which
|
|
// should be universal enough to put straight in this EditorBase routine.
|
|
if (NS_WARN_IF(!atStartOfRightNode.GetContainerAsContent())) {
|
|
return SplitNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
// If we meet an orphan node before meeting aMostAncestorToSplit, we need
|
|
// to stop splitting. This is a bug of the caller.
|
|
if (NS_WARN_IF(atStartOfRightNode.GetContainer() != &aMostAncestorToSplit &&
|
|
!atStartOfRightNode.GetContainer()->GetParent())) {
|
|
return SplitNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
nsIContent* currentRightNode = atStartOfRightNode.GetContainerAsContent();
|
|
|
|
// If the split point is middle of the node or the node is not a text node
|
|
// and we're allowed to create empty element node, split it.
|
|
if ((aSplitAtEdges == SplitAtEdges::eAllowToCreateEmptyContainer &&
|
|
!atStartOfRightNode.GetContainerAsText()) ||
|
|
(!atStartOfRightNode.IsStartOfContainer() &&
|
|
!atStartOfRightNode.IsEndOfContainer())) {
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> newLeftNode =
|
|
SplitNodeWithTransaction(atStartOfRightNode, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return SplitNodeResult(error.StealNSResult());
|
|
}
|
|
|
|
if (currentRightNode == &aMostAncestorToSplit) {
|
|
// Actually, we split aMostAncestorToSplit.
|
|
return SplitNodeResult(newLeftNode, &aMostAncestorToSplit);
|
|
}
|
|
|
|
// Then, try to split its parent before current node.
|
|
atStartOfRightNode.Set(currentRightNode);
|
|
}
|
|
// If the split point is end of the node and it is a text node or we're not
|
|
// allowed to create empty container node, try to split its parent after it.
|
|
else if (!atStartOfRightNode.IsStartOfContainer()) {
|
|
if (currentRightNode == &aMostAncestorToSplit) {
|
|
return SplitNodeResult(&aMostAncestorToSplit, nullptr);
|
|
}
|
|
|
|
// Try to split its parent after current node.
|
|
atStartOfRightNode.Set(currentRightNode);
|
|
DebugOnly<bool> advanced = atStartOfRightNode.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset after current node");
|
|
}
|
|
// If the split point is start of the node and it is a text node or we're
|
|
// not allowed to create empty container node, try to split its parent.
|
|
else {
|
|
if (currentRightNode == &aMostAncestorToSplit) {
|
|
return SplitNodeResult(nullptr, &aMostAncestorToSplit);
|
|
}
|
|
|
|
// Try to split its parent before current node.
|
|
atStartOfRightNode.Set(currentRightNode);
|
|
}
|
|
}
|
|
|
|
return SplitNodeResult(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
EditorDOMPoint
|
|
EditorBase::JoinNodesDeepWithTransaction(nsIContent& aLeftNode,
|
|
nsIContent& aRightNode)
|
|
{
|
|
// 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> leftNodeToJoin = &aLeftNode;
|
|
nsCOMPtr<nsIContent> rightNodeToJoin = &aRightNode;
|
|
nsCOMPtr<nsINode> parentNode = aRightNode.GetParentNode();
|
|
|
|
EditorDOMPoint ret;
|
|
while (leftNodeToJoin && rightNodeToJoin && parentNode &&
|
|
AreNodesSameType(*leftNodeToJoin, *rightNodeToJoin)) {
|
|
uint32_t length = leftNodeToJoin->Length();
|
|
|
|
// Do the join
|
|
nsresult rv = JoinNodesWithTransaction(*leftNodeToJoin, *rightNodeToJoin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return EditorDOMPoint();
|
|
}
|
|
|
|
ret.Set(rightNodeToJoin, length);
|
|
|
|
if (parentNode->GetAsText()) {
|
|
// 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 = rightNodeToJoin;
|
|
rightNodeToJoin = parentNode->GetChildAt_Deprecated(length);
|
|
if (rightNodeToJoin) {
|
|
leftNodeToJoin = rightNodeToJoin->GetPreviousSibling();
|
|
} else {
|
|
leftNodeToJoin = nullptr;
|
|
}
|
|
|
|
// Skip over non-editable nodes
|
|
while (leftNodeToJoin && !IsEditable(leftNodeToJoin)) {
|
|
leftNodeToJoin = leftNodeToJoin->GetPreviousSibling();
|
|
}
|
|
if (!leftNodeToJoin) {
|
|
return ret;
|
|
}
|
|
|
|
while (rightNodeToJoin && !IsEditable(rightNodeToJoin)) {
|
|
rightNodeToJoin = rightNodeToJoin->GetNextSibling();
|
|
}
|
|
if (!rightNodeToJoin) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(!ret.IsSet())) {
|
|
return EditorDOMPoint();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
EditorBase::BeginUpdateViewBatch()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(mUpdateCount >= 0, "bad state");
|
|
|
|
if (!mUpdateCount) {
|
|
// Turn off selection updates and notifications.
|
|
SelectionRefPtr()->StartBatchChanges();
|
|
}
|
|
|
|
mUpdateCount++;
|
|
}
|
|
|
|
void
|
|
EditorBase::EndUpdateViewBatch()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
MOZ_ASSERT(mUpdateCount > 0, "bad state");
|
|
|
|
if (mUpdateCount <= 0) {
|
|
mUpdateCount = 0;
|
|
return;
|
|
}
|
|
|
|
if (--mUpdateCount) {
|
|
return;
|
|
}
|
|
|
|
// Turn selection updating and notifications back on.
|
|
SelectionRefPtr()->EndBatchChanges();
|
|
|
|
HTMLEditor* htmlEditor = AsHTMLEditor();
|
|
if (!htmlEditor) {
|
|
return;
|
|
}
|
|
|
|
// We may need to show resizing handles or update existing ones after
|
|
// all transactions are done. This way of doing is preferred to DOM
|
|
// mutation events listeners because all the changes the user can apply
|
|
// to a document may result in multiple events, some of them quite hard
|
|
// to listen too (in particular when an ancestor of the selection is
|
|
// changed but the selection itself is not changed).
|
|
DebugOnly<nsresult> rv = htmlEditor->RefereshEditingUI();
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "RefereshEditingUI() failed");
|
|
}
|
|
|
|
TextComposition*
|
|
EditorBase::GetComposition() const
|
|
{
|
|
return mComposition;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsIMEComposing() const
|
|
{
|
|
return mComposition && mComposition->IsComposing();
|
|
}
|
|
|
|
bool
|
|
EditorBase::ShouldHandleIMEComposition() const
|
|
{
|
|
// When the editor is being reframed, the old value may be restored with
|
|
// InsertText(). In this time, the text should be inserted as not a part
|
|
// of the composition.
|
|
return mComposition && mDidPostCreate;
|
|
}
|
|
|
|
void
|
|
EditorBase::DoAfterDoTransaction(nsITransaction* aTxn)
|
|
{
|
|
bool isTransientTransaction;
|
|
MOZ_ALWAYS_SUCCEEDS(aTxn->GetIsTransient(&isTransientTransaction));
|
|
|
|
if (!isTransientTransaction) {
|
|
// we need to deal here with the case where the user saved after some
|
|
// edits, then undid one or more times. Then, the undo count is -ve,
|
|
// but we can't let a do take it back to zero. So we flip it up to
|
|
// a +ve number.
|
|
int32_t modCount;
|
|
GetModificationCount(&modCount);
|
|
if (modCount < 0) {
|
|
modCount = -modCount;
|
|
}
|
|
|
|
// don't count transient transactions
|
|
MOZ_ALWAYS_SUCCEEDS(IncrementModificationCount(1));
|
|
}
|
|
}
|
|
|
|
void
|
|
EditorBase::DoAfterUndoTransaction()
|
|
{
|
|
// all undoable transactions are non-transient
|
|
MOZ_ALWAYS_SUCCEEDS(IncrementModificationCount(-1));
|
|
}
|
|
|
|
void
|
|
EditorBase::DoAfterRedoTransaction()
|
|
{
|
|
// all redoable transactions are non-transient
|
|
MOZ_ALWAYS_SUCCEEDS(IncrementModificationCount(1));
|
|
}
|
|
|
|
already_AddRefed<EditAggregateTransaction>
|
|
EditorBase::CreateTxnForDeleteSelection(EDirection aAction,
|
|
nsINode** aRemovingNode,
|
|
int32_t* aOffset,
|
|
int32_t* aLength)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
// Check whether the selection is collapsed and we should do nothing:
|
|
if (NS_WARN_IF(SelectionRefPtr()->IsCollapsed() && aAction == eNone)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// allocate the out-param transaction
|
|
RefPtr<EditAggregateTransaction> aggregateTransaction =
|
|
EditAggregateTransaction::Create();
|
|
|
|
for (uint32_t rangeIdx = 0;
|
|
rangeIdx < SelectionRefPtr()->RangeCount();
|
|
++rangeIdx) {
|
|
RefPtr<nsRange> range = SelectionRefPtr()->GetRangeAt(rangeIdx);
|
|
if (NS_WARN_IF(!range)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Same with range as with selection; if it is collapsed and action
|
|
// is eNone, do nothing.
|
|
if (!range->Collapsed()) {
|
|
RefPtr<DeleteRangeTransaction> deleteRangeTransaction =
|
|
DeleteRangeTransaction::Create(*this, *range);
|
|
// XXX Oh, not checking if deleteRangeTransaction can modify the range...
|
|
aggregateTransaction->AppendChild(deleteRangeTransaction);
|
|
} else if (aAction != eNone) {
|
|
// we have an insertion point. delete the thing in front of it or
|
|
// behind it, depending on aAction
|
|
// XXX Odd, when there are two or more ranges, this returns the last
|
|
// range information with aRemovingNode, aOffset and aLength.
|
|
RefPtr<EditTransactionBase> deleteRangeTransaction =
|
|
CreateTxnForDeleteRange(range, aAction,
|
|
aRemovingNode, aOffset, aLength);
|
|
// XXX When there are two or more ranges and at least one of them is
|
|
// not editable, deleteRangeTransaction may be nullptr.
|
|
// In such case, should we stop removing other ranges too?
|
|
if (NS_WARN_IF(!deleteRangeTransaction)) {
|
|
return nullptr;
|
|
}
|
|
aggregateTransaction->AppendChild(deleteRangeTransaction);
|
|
}
|
|
}
|
|
|
|
return aggregateTransaction.forget();
|
|
}
|
|
|
|
//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior
|
|
//are not implemented
|
|
already_AddRefed<EditTransactionBase>
|
|
EditorBase::CreateTxnForDeleteRange(nsRange* aRangeToDelete,
|
|
EDirection aAction,
|
|
nsINode** aRemovingNode,
|
|
int32_t* aOffset,
|
|
int32_t* aLength)
|
|
{
|
|
MOZ_ASSERT(aAction != eNone);
|
|
|
|
// get the node and offset of the insertion point
|
|
nsCOMPtr<nsINode> node = aRangeToDelete->GetStartContainer();
|
|
if (NS_WARN_IF(!node)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* child = aRangeToDelete->GetChildAtStartOffset();
|
|
int32_t offset = aRangeToDelete->StartOffset();
|
|
|
|
// determine if the insertion point is at the beginning, middle, or end of
|
|
// the node
|
|
|
|
uint32_t count = node->Length();
|
|
|
|
bool isFirst = !offset;
|
|
bool isLast = (count == (uint32_t)offset);
|
|
|
|
// XXX: if isFirst && isLast, then we'll need to delete the node
|
|
// as well as the 1 child
|
|
|
|
// build a transaction for deleting the appropriate data
|
|
// XXX: this has to come from rule section
|
|
if (aAction == ePrevious && isFirst) {
|
|
// we're backspacing from the beginning of the node. Delete the first
|
|
// thing to our left
|
|
nsCOMPtr<nsIContent> priorNode = GetPreviousEditableNode(*node);
|
|
if (NS_WARN_IF(!priorNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// there is a priorNode, so delete its last child (if chardata, delete the
|
|
// last char). if it has no children, delete it
|
|
if (RefPtr<CharacterData> priorNodeAsCharData =
|
|
CharacterData::FromNode(priorNode)) {
|
|
uint32_t length = priorNode->Length();
|
|
// Bail out for empty chardata XXX: Do we want to do something else?
|
|
if (NS_WARN_IF(!length)) {
|
|
return nullptr;
|
|
}
|
|
RefPtr<DeleteTextTransaction> deleteTextTransaction =
|
|
DeleteTextTransaction::MaybeCreateForPreviousCharacter(
|
|
*this, *priorNodeAsCharData, length);
|
|
if (NS_WARN_IF(!deleteTextTransaction)) {
|
|
return nullptr;
|
|
}
|
|
*aOffset = deleteTextTransaction->Offset();
|
|
*aLength = deleteTextTransaction->LengthToDelete();
|
|
priorNode.forget(aRemovingNode);
|
|
return deleteTextTransaction.forget();
|
|
}
|
|
|
|
// priorNode is not chardata, so tell its parent to delete it
|
|
RefPtr<DeleteNodeTransaction> deleteNodeTransaction =
|
|
DeleteNodeTransaction::MaybeCreate(*this, *priorNode);
|
|
if (NS_WARN_IF(!deleteNodeTransaction)) {
|
|
return nullptr;
|
|
}
|
|
priorNode.forget(aRemovingNode);
|
|
return deleteNodeTransaction.forget();
|
|
}
|
|
|
|
if (aAction == eNext && isLast) {
|
|
// we're deleting from the end of the node. Delete the first thing to our
|
|
// right
|
|
nsCOMPtr<nsIContent> nextNode = GetNextEditableNode(*node);
|
|
if (NS_WARN_IF(!nextNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// there is a nextNode, so delete its first child (if chardata, delete the
|
|
// first char). if it has no children, delete it
|
|
if (RefPtr<CharacterData> nextNodeAsCharData =
|
|
CharacterData::FromNode(nextNode)) {
|
|
uint32_t length = nextNode->Length();
|
|
// Bail out for empty chardata XXX: Do we want to do something else?
|
|
if (NS_WARN_IF(!length)) {
|
|
return nullptr;
|
|
}
|
|
RefPtr<DeleteTextTransaction> deleteTextTransaction =
|
|
DeleteTextTransaction::MaybeCreateForNextCharacter(
|
|
*this, *nextNodeAsCharData, 0);
|
|
if (NS_WARN_IF(!deleteTextTransaction)) {
|
|
return nullptr;
|
|
}
|
|
*aOffset = deleteTextTransaction->Offset();
|
|
*aLength = deleteTextTransaction->LengthToDelete();
|
|
nextNode.forget(aRemovingNode);
|
|
return deleteTextTransaction.forget();
|
|
}
|
|
|
|
// nextNode is not chardata, so tell its parent to delete it
|
|
RefPtr<DeleteNodeTransaction> deleteNodeTransaction =
|
|
DeleteNodeTransaction::MaybeCreate(*this, *nextNode);
|
|
if (NS_WARN_IF(!deleteNodeTransaction)) {
|
|
return nullptr;
|
|
}
|
|
nextNode.forget(aRemovingNode);
|
|
return deleteNodeTransaction.forget();
|
|
}
|
|
|
|
if (RefPtr<CharacterData> nodeAsCharData = CharacterData::FromNode(node)) {
|
|
if (NS_WARN_IF(aAction != ePrevious && aAction != eNext)) {
|
|
return nullptr;
|
|
}
|
|
// We have chardata, so delete a char at the proper offset
|
|
RefPtr<DeleteTextTransaction> deleteTextTransaction =
|
|
aAction == ePrevious ?
|
|
DeleteTextTransaction::MaybeCreateForPreviousCharacter(
|
|
*this, *nodeAsCharData, offset) :
|
|
DeleteTextTransaction::MaybeCreateForNextCharacter(
|
|
*this, *nodeAsCharData, offset);
|
|
if (NS_WARN_IF(!deleteTextTransaction)) {
|
|
return nullptr;
|
|
}
|
|
*aOffset = deleteTextTransaction->Offset();
|
|
*aLength = deleteTextTransaction->LengthToDelete();
|
|
node.forget(aRemovingNode);
|
|
return deleteTextTransaction.forget();
|
|
}
|
|
|
|
// we're either deleting a node or chardata, need to dig into the next/prev
|
|
// node to find out
|
|
nsCOMPtr<nsINode> selectedNode;
|
|
if (aAction == ePrevious) {
|
|
selectedNode =
|
|
GetPreviousEditableNode(EditorRawDOMPoint(node, child, offset));
|
|
} else if (aAction == eNext) {
|
|
selectedNode = GetNextEditableNode(EditorRawDOMPoint(node, child, offset));
|
|
}
|
|
|
|
while (selectedNode &&
|
|
selectedNode->IsCharacterData() &&
|
|
!selectedNode->Length()) {
|
|
// Can't delete an empty chardata node (bug 762183)
|
|
if (aAction == ePrevious) {
|
|
selectedNode = GetPreviousEditableNode(*selectedNode);
|
|
} else if (aAction == eNext) {
|
|
selectedNode = GetNextEditableNode(*selectedNode);
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(!selectedNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (RefPtr<CharacterData> selectedNodeAsCharData =
|
|
CharacterData::FromNode(selectedNode)) {
|
|
if (NS_WARN_IF(aAction != ePrevious && aAction != eNext)) {
|
|
return nullptr;
|
|
}
|
|
// we are deleting from a chardata node, so do a character deletion
|
|
uint32_t position = 0;
|
|
if (aAction == ePrevious) {
|
|
position = selectedNode->Length();
|
|
}
|
|
RefPtr<DeleteTextTransaction> deleteTextTransaction =
|
|
aAction == ePrevious ?
|
|
DeleteTextTransaction::MaybeCreateForPreviousCharacter(
|
|
*this, *selectedNodeAsCharData, position) :
|
|
DeleteTextTransaction::MaybeCreateForNextCharacter(
|
|
*this, *selectedNodeAsCharData, position);
|
|
if (NS_WARN_IF(!deleteTextTransaction)) {
|
|
return nullptr;
|
|
}
|
|
*aOffset = deleteTextTransaction->Offset();
|
|
*aLength = deleteTextTransaction->LengthToDelete();
|
|
selectedNode.forget(aRemovingNode);
|
|
return deleteTextTransaction.forget();
|
|
}
|
|
|
|
RefPtr<DeleteNodeTransaction> deleteNodeTransaction =
|
|
DeleteNodeTransaction::MaybeCreate(*this, *selectedNode);
|
|
if (NS_WARN_IF(!deleteNodeTransaction)) {
|
|
return nullptr;
|
|
}
|
|
selectedNode.forget(aRemovingNode);
|
|
return deleteNodeTransaction.forget();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::CreateRange(nsINode* aStartContainer,
|
|
int32_t aStartOffset,
|
|
nsINode* aEndContainer,
|
|
int32_t aEndOffset,
|
|
nsRange** aRange)
|
|
{
|
|
return nsRange::CreateRange(aStartContainer, aStartOffset,
|
|
aEndContainer, aEndOffset, aRange);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::AppendNodeToSelectionAsRange(nsINode* aNode)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (NS_WARN_IF(!aNode)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> parentNode = aNode->GetParentNode();
|
|
if (NS_WARN_IF(!parentNode)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int32_t offset = GetChildOffset(aNode, parentNode);
|
|
|
|
RefPtr<nsRange> range;
|
|
nsresult rv = CreateRange(parentNode, offset, parentNode, offset + 1,
|
|
getter_AddRefs(range));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (NS_WARN_IF(!range)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
ErrorResult err;
|
|
SelectionRefPtr()->AddRange(*range, err);
|
|
NS_WARNING_ASSERTION(!err.Failed(), "Failed to add range to Selection");
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::ClearSelection()
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
ErrorResult rv;
|
|
SelectionRefPtr()->RemoveAllRanges(rv);
|
|
NS_WARNING_ASSERTION(!rv.Failed(),
|
|
"Failed to remove all ranges from Selection");
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
EditorBase::CreateHTMLContent(const nsAtom* aTag)
|
|
{
|
|
MOZ_ASSERT(aTag);
|
|
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
// XXX Wallpaper over editor bug (editor tries to create elements with an
|
|
// empty nodename).
|
|
if (aTag == nsGkAtoms::_empty) {
|
|
NS_ERROR("Don't pass an empty tag to EditorBase::CreateHTMLContent, "
|
|
"check caller.");
|
|
return nullptr;
|
|
}
|
|
|
|
return doc->CreateElem(nsDependentAtomString(aTag), nullptr,
|
|
kNameSpaceID_XHTML);
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<nsTextNode>
|
|
EditorBase::CreateTextNode(nsIDocument& aDocument,
|
|
const nsAString& aData)
|
|
{
|
|
RefPtr<nsTextNode> text = aDocument.CreateEmptyTextNode();
|
|
text->MarkAsMaybeModifiedFrequently();
|
|
// Don't notify; this node is still being created.
|
|
text->SetText(aData, false);
|
|
return text.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::SetAttributeOrEquivalent(Element* aElement,
|
|
const nsAString& aAttribute,
|
|
const nsAString& aValue,
|
|
bool aSuppressTransaction)
|
|
{
|
|
if (NS_WARN_IF(!aElement)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<nsAtom> attribute = NS_Atomize(aAttribute);
|
|
return SetAttributeOrEquivalent(aElement, attribute, aValue,
|
|
aSuppressTransaction);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
EditorBase::RemoveAttributeOrEquivalent(Element* aElement,
|
|
const nsAString& aAttribute,
|
|
bool aSuppressTransaction)
|
|
{
|
|
if (NS_WARN_IF(!aElement)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eRemoveAttribute);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<nsAtom> attribute = NS_Atomize(aAttribute);
|
|
return RemoveAttributeOrEquivalent(aElement, attribute, aSuppressTransaction);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::HandleKeyPressEvent(WidgetKeyboardEvent* aKeyboardEvent)
|
|
{
|
|
// NOTE: When you change this method, you should also change:
|
|
// * editor/libeditor/tests/test_texteditor_keyevent_handling.html
|
|
// * editor/libeditor/tests/test_htmleditor_keyevent_handling.html
|
|
//
|
|
// And also when you add new key handling, you need to change the subclass's
|
|
// HandleKeyPressEvent()'s switch statement.
|
|
|
|
if (NS_WARN_IF(!aKeyboardEvent)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
MOZ_ASSERT(aKeyboardEvent->mMessage == eKeyPress,
|
|
"HandleKeyPressEvent gets non-keypress event");
|
|
|
|
// if we are readonly or disabled, then do nothing.
|
|
if (IsReadonly() || IsDisabled()) {
|
|
// consume backspace for disabled and readonly textfields, to prevent
|
|
// back in history, which could be confusing to users
|
|
if (aKeyboardEvent->mKeyCode == NS_VK_BACK) {
|
|
aKeyboardEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
switch (aKeyboardEvent->mKeyCode) {
|
|
case NS_VK_META:
|
|
case NS_VK_WIN:
|
|
case NS_VK_SHIFT:
|
|
case NS_VK_CONTROL:
|
|
case NS_VK_ALT:
|
|
aKeyboardEvent->PreventDefault(); // consumed
|
|
return NS_OK;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::HandleInlineSpellCheck(EditSubAction aEditSubAction,
|
|
nsINode* previousSelectedNode,
|
|
uint32_t previousSelectedOffset,
|
|
nsINode* aStartContainer,
|
|
uint32_t aStartOffset,
|
|
nsINode* aEndContainer,
|
|
uint32_t aEndOffset)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
if (!mInlineSpellChecker) {
|
|
return NS_OK;
|
|
}
|
|
return mInlineSpellChecker->SpellCheckAfterEditorChange(
|
|
aEditSubAction, *SelectionRefPtr(),
|
|
previousSelectedNode, previousSelectedOffset,
|
|
aStartContainer, aStartOffset, aEndContainer,
|
|
aEndOffset);
|
|
}
|
|
|
|
Element*
|
|
EditorBase::FindSelectionRoot(nsINode* aNode) const
|
|
{
|
|
return GetRoot();
|
|
}
|
|
|
|
void
|
|
EditorBase::InitializeSelectionAncestorLimit(nsIContent& aAncestorLimit)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
SelectionRefPtr()->SetAncestorLimiter(&aAncestorLimit);
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::InitializeSelection(EventTarget* aFocusEventTarget)
|
|
{
|
|
MOZ_ASSERT(IsEditActionDataAvailable());
|
|
|
|
nsCOMPtr<nsINode> targetNode = do_QueryInterface(aFocusEventTarget);
|
|
if (NS_WARN_IF(!targetNode)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
nsCOMPtr<nsIContent> selectionRootContent = FindSelectionRoot(targetNode);
|
|
if (!selectionRootContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
if (NS_WARN_IF(!presShell)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsISelectionController> selectionController =
|
|
GetSelectionController();
|
|
if (NS_WARN_IF(!selectionController)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Init the caret
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (NS_WARN_IF(!caret)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
caret->SetIgnoreUserModify(false);
|
|
caret->SetSelection(SelectionRefPtr());
|
|
selectionController->SetCaretReadOnly(IsReadonly());
|
|
selectionController->SetCaretEnabled(true);
|
|
|
|
// Init selection
|
|
selectionController->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_ON);
|
|
selectionController->SetSelectionFlags(
|
|
nsISelectionDisplay::DISPLAY_ALL);
|
|
selectionController->RepaintSelection(
|
|
nsISelectionController::SELECTION_NORMAL);
|
|
|
|
// If the computed selection root isn't root content, we should set it
|
|
// as selection ancestor limit. However, if that is root element, it means
|
|
// there is not limitation of the selection, then, we must set nullptr.
|
|
// NOTE: If we set a root element to the ancestor limit, some selection
|
|
// methods don't work fine.
|
|
if (selectionRootContent->GetParent()) {
|
|
InitializeSelectionAncestorLimit(*selectionRootContent);
|
|
} else {
|
|
SelectionRefPtr()->SetAncestorLimiter(nullptr);
|
|
}
|
|
|
|
// If there is composition when this is called, we may need to restore IME
|
|
// selection because if the editor is reframed, this already forgot IME
|
|
// selection and the transaction.
|
|
if (mComposition && mComposition->IsMovingToNewTextNode()) {
|
|
// We need to look for the new text node from current selection.
|
|
// XXX If selection is changed during reframe, this doesn't work well!
|
|
nsRange* firstRange = SelectionRefPtr()->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
EditorRawDOMPoint atStartOfFirstRange(firstRange->StartRef());
|
|
EditorRawDOMPoint betterInsertionPoint =
|
|
FindBetterInsertionPoint(atStartOfFirstRange);
|
|
Text* textNode = betterInsertionPoint.GetContainerAsText();
|
|
MOZ_ASSERT(textNode,
|
|
"There must be text node if composition string is not empty");
|
|
if (textNode) {
|
|
MOZ_ASSERT(textNode->Length() >= mComposition->XPEndOffsetInTextNode(),
|
|
"The text node must be different from the old text node");
|
|
CompositionTransaction::SetIMESelection(
|
|
*this, textNode,
|
|
mComposition->XPOffsetInTextNode(),
|
|
mComposition->XPLengthInTextNode(),
|
|
mComposition->GetRanges());
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class RepaintSelectionRunner final : public Runnable {
|
|
public:
|
|
explicit RepaintSelectionRunner(nsISelectionController* aSelectionController)
|
|
: Runnable("RepaintSelectionRunner")
|
|
, mSelectionController(aSelectionController)
|
|
{
|
|
}
|
|
|
|
NS_IMETHOD Run() override
|
|
{
|
|
mSelectionController->RepaintSelection(
|
|
nsISelectionController::SELECTION_NORMAL);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsISelectionController> mSelectionController;
|
|
};
|
|
|
|
nsresult
|
|
EditorBase::FinalizeSelection()
|
|
{
|
|
nsCOMPtr<nsISelectionController> selectionController =
|
|
GetSelectionController();
|
|
if (NS_WARN_IF(!selectionController)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
SelectionRefPtr()->SetAncestorLimiter(nullptr);
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
selectionController->SetCaretEnabled(false);
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, NS_ERROR_NOT_INITIALIZED);
|
|
fm->UpdateCaretForCaretBrowsingMode();
|
|
|
|
if (!HasIndependentSelection()) {
|
|
// If this editor doesn't have an independent selection, i.e., it must
|
|
// mean that it is an HTML editor, the selection controller is shared with
|
|
// presShell. So, even this editor loses focus, other part of the document
|
|
// may still have focus.
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
ErrorResult ret;
|
|
if (!doc || !doc->HasFocus(ret)) {
|
|
// If the document already lost focus, mark the selection as disabled.
|
|
selectionController->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_DISABLED);
|
|
} else {
|
|
// Otherwise, mark selection as normal because outside of a
|
|
// contenteditable element should be selected with normal selection
|
|
// color after here.
|
|
selectionController->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_ON);
|
|
}
|
|
} else if (IsFormWidget() || IsPasswordEditor() ||
|
|
IsReadonly() || IsDisabled() || IsInputFiltered()) {
|
|
// In <input> or <textarea>, the independent selection should be hidden
|
|
// while this editor doesn't have focus.
|
|
selectionController->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_HIDDEN);
|
|
} else {
|
|
// Otherwise, although we're not sure how this case happens, the
|
|
// independent selection should be marked as disabled.
|
|
selectionController->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_DISABLED);
|
|
}
|
|
|
|
// FinalizeSelection might be called from ContentRemoved even if selection
|
|
// isn't updated. So we need to call RepaintSelection after updated it.
|
|
nsContentUtils::AddScriptRunner(
|
|
new RepaintSelectionRunner(selectionController));
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::ReinitializeSelection(Element& aElement)
|
|
{
|
|
if (NS_WARN_IF(Destroyed())) {
|
|
return;
|
|
}
|
|
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return;
|
|
}
|
|
|
|
OnFocus(&aElement);
|
|
|
|
// If previous focused editor turn on spellcheck and this editor doesn't
|
|
// turn on it, spellcheck state is mismatched. So we need to re-sync it.
|
|
SyncRealTimeSpell();
|
|
|
|
nsPresContext* context = GetPresContext();
|
|
if (NS_WARN_IF(!context)) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIContent> focusedContent = GetFocusedContentForIME();
|
|
IMEStateManager::OnFocusInEditor(context, focusedContent, *this);
|
|
}
|
|
|
|
Element*
|
|
EditorBase::GetEditorRoot() const
|
|
{
|
|
return GetRoot();
|
|
}
|
|
|
|
Element*
|
|
EditorBase::GetExposedRoot() const
|
|
{
|
|
Element* rootElement = GetRoot();
|
|
|
|
// For plaintext editors, we need to ask the input/textarea element directly.
|
|
if (rootElement && rootElement->IsRootOfNativeAnonymousSubtree()) {
|
|
rootElement = rootElement->GetParent()->AsElement();
|
|
}
|
|
|
|
return rootElement;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::DetermineCurrentDirection()
|
|
{
|
|
// Get the current root direction from its frame
|
|
nsIContent* rootElement = GetExposedRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_FAILURE);
|
|
|
|
// If we don't have an explicit direction, determine our direction
|
|
// from the content's direction
|
|
if (!IsRightToLeft() && !IsLeftToRight()) {
|
|
nsIFrame* frame = rootElement->GetPrimaryFrame();
|
|
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
|
|
|
|
// Set the flag here, to enable us to use the same code path below.
|
|
// It will be flipped before returning from the function.
|
|
if (frame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
|
|
} else {
|
|
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::ToggleTextDirection()
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetTextDirection);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// XXX Oddly, Chrome does not dispatch beforeinput event in this case but
|
|
// dispatches input event.
|
|
|
|
nsresult rv = DetermineCurrentDirection();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
if (IsRightToLeft()) {
|
|
nsresult rv = SetTextDirectionTo(TextDirection::eLTR);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
} else if (IsLeftToRight()) {
|
|
nsresult rv = SetTextDirectionTo(TextDirection::eRTL);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// XXX When we don't change the text direction, do we really need to
|
|
// dispatch input event?
|
|
FireInputEvent();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EditorBase::SwitchTextDirectionTo(TextDirection aTextDirection)
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eSetTextDirection);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return;
|
|
}
|
|
|
|
// XXX Oddly, Chrome does not dispatch beforeinput event in this case but
|
|
// dispatches input event.
|
|
|
|
nsresult rv = DetermineCurrentDirection();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
|
|
if (aTextDirection == TextDirection::eLTR && IsRightToLeft()) {
|
|
if (NS_WARN_IF(NS_FAILED(SetTextDirectionTo(aTextDirection)))) {
|
|
return;
|
|
}
|
|
} else if (aTextDirection == TextDirection::eRTL && IsLeftToRight()) {
|
|
if (NS_WARN_IF(NS_FAILED(SetTextDirectionTo(aTextDirection)))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// XXX When we don't change the text direction, do we really need to
|
|
// dispatch input event?
|
|
FireInputEvent();
|
|
}
|
|
|
|
nsresult
|
|
EditorBase::SetTextDirectionTo(TextDirection aTextDirection)
|
|
{
|
|
Element* rootElement = GetExposedRoot();
|
|
|
|
if (aTextDirection == TextDirection::eLTR) {
|
|
NS_ASSERTION(!IsLeftToRight(), "Unexpected mutually exclusive flag");
|
|
mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
|
|
nsresult rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir,
|
|
NS_LITERAL_STRING("ltr"), true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aTextDirection == TextDirection::eRTL) {
|
|
NS_ASSERTION(!IsRightToLeft(), "Unexpected mutually exclusive flag");
|
|
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
|
|
nsresult rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir,
|
|
NS_LITERAL_STRING("rtl"), true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsModifiableNode(const nsINode& aNode) const
|
|
{
|
|
return !AsHTMLEditor() || aNode.IsEditable();
|
|
}
|
|
|
|
nsIContent*
|
|
EditorBase::GetFocusedContent()
|
|
{
|
|
EventTarget* piTarget = GetDOMEventTarget();
|
|
if (!piTarget) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, nullptr);
|
|
|
|
nsIContent* content = fm->GetFocusedElement();
|
|
MOZ_ASSERT((content == piTarget) == SameCOMIdentity(content, piTarget));
|
|
|
|
return (content == piTarget) ? content : nullptr;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
EditorBase::GetFocusedContentForIME()
|
|
{
|
|
nsCOMPtr<nsIContent> content = GetFocusedContent();
|
|
return content.forget();
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsActiveInDOMWindow()
|
|
{
|
|
EventTarget* piTarget = GetDOMEventTarget();
|
|
if (!piTarget) {
|
|
return false;
|
|
}
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, false);
|
|
|
|
nsCOMPtr<nsIDocument> document = GetDocument();
|
|
if (NS_WARN_IF(!document)) {
|
|
return false;
|
|
}
|
|
nsPIDOMWindowOuter* ourWindow = document->GetWindow();
|
|
nsCOMPtr<nsPIDOMWindowOuter> win;
|
|
nsIContent* content =
|
|
nsFocusManager::GetFocusedDescendant(ourWindow,
|
|
nsFocusManager::eOnlyCurrentWindow,
|
|
getter_AddRefs(win));
|
|
return SameCOMIdentity(content, piTarget);
|
|
}
|
|
|
|
bool
|
|
EditorBase::IsAcceptableInputEvent(WidgetGUIEvent* aGUIEvent)
|
|
{
|
|
// If the event is trusted, the event should always cause input.
|
|
if (NS_WARN_IF(!aGUIEvent)) {
|
|
return false;
|
|
}
|
|
|
|
// If this is dispatched by using cordinates but this editor doesn't have
|
|
// focus, we shouldn't handle it.
|
|
if (aGUIEvent->IsUsingCoordinates()) {
|
|
nsIContent* focusedContent = GetFocusedContent();
|
|
if (!focusedContent) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// If a composition event isn't dispatched via widget, we need to ignore them
|
|
// since they cannot be managed by TextComposition. E.g., the event was
|
|
// created by chrome JS.
|
|
// Note that if we allow to handle such events, editor may be confused by
|
|
// strange event order.
|
|
bool needsWidget = false;
|
|
switch (aGUIEvent->mMessage) {
|
|
case eUnidentifiedEvent:
|
|
// If events are not created with proper event interface, their message
|
|
// are initialized with eUnidentifiedEvent. Let's ignore such event.
|
|
return false;
|
|
case eCompositionStart:
|
|
case eCompositionEnd:
|
|
case eCompositionUpdate:
|
|
case eCompositionChange:
|
|
case eCompositionCommitAsIs:
|
|
// Don't allow composition events whose internal event are not
|
|
// WidgetCompositionEvent.
|
|
if (!aGUIEvent->AsCompositionEvent()) {
|
|
return false;
|
|
}
|
|
needsWidget = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (needsWidget && !aGUIEvent->mWidget) {
|
|
return false;
|
|
}
|
|
|
|
// Accept all trusted events.
|
|
if (aGUIEvent->IsTrusted()) {
|
|
return true;
|
|
}
|
|
|
|
// Ignore untrusted mouse event.
|
|
// XXX Why are we handling other untrusted input events?
|
|
if (aGUIEvent->AsMouseEventBase()) {
|
|
return false;
|
|
}
|
|
|
|
// Otherwise, we shouldn't handle any input events when we're not an active
|
|
// element of the DOM window.
|
|
return IsActiveInDOMWindow();
|
|
}
|
|
|
|
void
|
|
EditorBase::OnFocus(EventTarget* aFocusEventTarget)
|
|
{
|
|
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
|
|
if (NS_WARN_IF(!editActionData.CanHandle())) {
|
|
return;
|
|
}
|
|
|
|
InitializeSelection(aFocusEventTarget);
|
|
mSpellCheckerDictionaryUpdated = false;
|
|
if (mInlineSpellChecker && CanEnableSpellCheck()) {
|
|
mInlineSpellChecker->UpdateCurrentDictionary();
|
|
mSpellCheckerDictionaryUpdated = true;
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
EditorBase::GetIMESelectionStartOffsetIn(nsINode* aTextNode)
|
|
{
|
|
MOZ_ASSERT(aTextNode, "aTextNode must not be nullptr");
|
|
|
|
nsISelectionController* selectionController = GetSelectionController();
|
|
if (NS_WARN_IF(!selectionController)) {
|
|
return -1;
|
|
}
|
|
|
|
uint32_t minOffset = UINT32_MAX;
|
|
static const SelectionType kIMESelectionTypes[] = {
|
|
SelectionType::eIMERawClause,
|
|
SelectionType::eIMESelectedRawClause,
|
|
SelectionType::eIMEConvertedClause,
|
|
SelectionType::eIMESelectedClause
|
|
};
|
|
for (auto selectionType : kIMESelectionTypes) {
|
|
RefPtr<Selection> selection = GetSelection(selectionType);
|
|
if (!selection) {
|
|
continue;
|
|
}
|
|
for (uint32_t i = 0; i < selection->RangeCount(); i++) {
|
|
RefPtr<nsRange> range = selection->GetRangeAt(i);
|
|
if (NS_WARN_IF(!range)) {
|
|
continue;
|
|
}
|
|
if (NS_WARN_IF(range->GetStartContainer() != aTextNode)) {
|
|
// ignore the start offset...
|
|
} else {
|
|
minOffset = std::min(minOffset, range->StartOffset());
|
|
}
|
|
if (NS_WARN_IF(range->GetEndContainer() != aTextNode)) {
|
|
// ignore the end offset...
|
|
} else {
|
|
minOffset = std::min(minOffset, range->EndOffset());
|
|
}
|
|
}
|
|
}
|
|
return minOffset < INT32_MAX ? minOffset : -1;
|
|
}
|
|
|
|
void
|
|
EditorBase::HideCaret(bool aHide)
|
|
{
|
|
if (mHidingCaret == aHide) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE_VOID(presShell);
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
NS_ENSURE_TRUE_VOID(caret);
|
|
|
|
mHidingCaret = aHide;
|
|
if (aHide) {
|
|
caret->AddForceHide();
|
|
} else {
|
|
caret->RemoveForceHide();
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* EditorBase::AutoSelectionRestorer
|
|
*****************************************************************************/
|
|
|
|
EditorBase::AutoSelectionRestorer::AutoSelectionRestorer(
|
|
EditorBase& aEditorBase
|
|
MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
|
|
: mEditorBase(nullptr)
|
|
{
|
|
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
|
|
if (aEditorBase.ArePreservingSelection()) {
|
|
// We already have initialized mSavedSel, so this must be nested call.
|
|
return;
|
|
}
|
|
MOZ_ASSERT(aEditorBase.IsEditActionDataAvailable());
|
|
mEditorBase = &aEditorBase;
|
|
mEditorBase->PreserveSelectionAcrossActions();
|
|
}
|
|
|
|
EditorBase::AutoSelectionRestorer::~AutoSelectionRestorer()
|
|
{
|
|
if (mEditorBase && mEditorBase->ArePreservingSelection()) {
|
|
mEditorBase->RestorePreservedSelection();
|
|
}
|
|
}
|
|
|
|
void
|
|
EditorBase::AutoSelectionRestorer::Abort()
|
|
{
|
|
if (mEditorBase) {
|
|
mEditorBase->StopPreservingSelection();
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* mozilla::EditorBase::AutoEditActionDataSetter
|
|
*****************************************************************************/
|
|
|
|
EditorBase::AutoEditActionDataSetter::AutoEditActionDataSetter(
|
|
const EditorBase& aEditorBase,
|
|
EditAction aEditAction)
|
|
: mEditorBase(const_cast<EditorBase&>(aEditorBase))
|
|
, mParentData(aEditorBase.mEditActionData)
|
|
{
|
|
// If we're nested edit action, copies necessary data from the parent.
|
|
if (mParentData) {
|
|
mSelection = mParentData->mSelection;
|
|
// If we're eNotEditing, we should inherit the parent's edit action.
|
|
// This may occur if creator or its callee use public methods which
|
|
// just returns something.
|
|
if (aEditAction != EditAction::eNotEditing) {
|
|
mEditAction = aEditAction;
|
|
}
|
|
} else {
|
|
mSelection = mEditorBase.GetSelection();
|
|
if (NS_WARN_IF(!mSelection)) {
|
|
return;
|
|
}
|
|
mEditAction = aEditAction;
|
|
}
|
|
mEditorBase.mEditActionData = this;
|
|
}
|
|
|
|
EditorBase::AutoEditActionDataSetter::~AutoEditActionDataSetter()
|
|
{
|
|
if (!mSelection || NS_WARN_IF(mEditorBase.mEditActionData != this)) {
|
|
return;
|
|
}
|
|
mEditorBase.mEditActionData = mParentData;
|
|
}
|
|
|
|
} // namespace mozilla
|