зеркало из https://github.com/mozilla/gecko-dev.git
3220 строки
112 KiB
C++
3220 строки
112 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Implementation of nsFrameSelection
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*/
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#include "nsFrameSelection.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/BasePrincipal.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/HTMLEditor.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/ScrollTypes.h"
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#include "mozilla/StaticPrefs_bidi.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "mozilla/StaticPrefs_layout.h"
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#include "nsCOMPtr.h"
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#include "nsDebug.h"
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#include "nsString.h"
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#include "nsISelectionListener.h"
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#include "nsContentCID.h"
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#include "nsDeviceContext.h"
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#include "nsIContent.h"
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#include "nsRange.h"
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#include "nsITableCellLayout.h"
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#include "nsTArray.h"
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#include "nsTableWrapperFrame.h"
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#include "nsTableCellFrame.h"
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#include "nsIScrollableFrame.h"
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#include "nsCCUncollectableMarker.h"
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#include "nsTextFragment.h"
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#include <algorithm>
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#include "nsContentUtils.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsGkAtoms.h"
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#include "nsIFrameTraversal.h"
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#include "nsLayoutUtils.h"
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#include "nsLayoutCID.h"
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#include "nsBidiPresUtils.h"
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static NS_DEFINE_CID(kFrameTraversalCID, NS_FRAMETRAVERSAL_CID);
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#include "nsTextFrame.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/PresShell.h"
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#include "nsPresContext.h"
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#include "nsCaret.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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// notifications
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#include "mozilla/dom/Document.h"
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#include "nsISelectionController.h" //for the enums
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#include "nsCopySupport.h"
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#include "nsIClipboard.h"
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#include "nsIFrameInlines.h"
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#include "nsError.h"
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#include "mozilla/AutoCopyListener.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/dom/ShadowRoot.h"
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#include "mozilla/dom/StaticRange.h"
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#include "mozilla/dom/Text.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/dom/SelectionBinding.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/layers/ScrollInputMethods.h"
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#include "nsFocusManager.h"
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#include "nsPIDOMWindow.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using mozilla::layers::ScrollInputMethod;
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//#define DEBUG_TABLE 1
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/**
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* Add cells to the selection inside of the given cells range.
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*
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* @param aTable [in] HTML table element
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* @param aStartRowIndex [in] row index where the cells range starts
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* @param aStartColumnIndex [in] column index where the cells range starts
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* @param aEndRowIndex [in] row index where the cells range ends
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* @param aEndColumnIndex [in] column index where the cells range ends
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*/
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static nsresult AddCellsToSelection(const nsIContent* aTableContent,
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int32_t aStartRowIndex,
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int32_t aStartColumnIndex,
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int32_t aEndRowIndex,
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int32_t aEndColumnIndex,
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Selection& aNormalSelection);
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static nsAtom* GetTag(nsINode* aNode);
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// returns the parent
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static nsINode* ParentOffset(nsINode* aNode, int32_t* aChildOffset);
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static nsINode* GetClosestInclusiveTableCellAncestor(nsINode* aDomNode);
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MOZ_CAN_RUN_SCRIPT_BOUNDARY static nsresult CreateAndAddRange(
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nsINode* aContainer, int32_t aOffset, Selection& aNormalSelection);
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static nsresult SelectCellElement(nsIContent* aCellElement,
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Selection& aNormalSelection);
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#ifdef XP_MACOSX
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static nsresult UpdateSelectionCacheOnRepaintSelection(Selection* aSel);
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#endif // XP_MACOSX
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#ifdef PRINT_RANGE
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static void printRange(nsRange* aDomRange);
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# define DEBUG_OUT_RANGE(x) printRange(x)
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#else
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# define DEBUG_OUT_RANGE(x)
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#endif // PRINT_RANGE
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/******************************************************************************
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* nsPeekOffsetStruct
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******************************************************************************/
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//#define DEBUG_SELECTION // uncomment for printf describing every collapse and
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// extend. #define DEBUG_NAVIGATION
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//#define DEBUG_TABLE_SELECTION 1
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nsPeekOffsetStruct::nsPeekOffsetStruct(
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nsSelectionAmount aAmount, nsDirection aDirection, int32_t aStartOffset,
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nsPoint aDesiredCaretPos, bool aJumpLines, bool aScrollViewStop,
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bool aIsKeyboardSelect, bool aVisual, bool aExtend,
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ForceEditableRegion aForceEditableRegion,
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EWordMovementType aWordMovementType, bool aTrimSpaces)
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: mAmount(aAmount),
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mDirection(aDirection),
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mStartOffset(aStartOffset),
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mDesiredCaretPos(aDesiredCaretPos),
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mWordMovementType(aWordMovementType),
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mJumpLines(aJumpLines),
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mTrimSpaces(aTrimSpaces),
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mScrollViewStop(aScrollViewStop),
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mIsKeyboardSelect(aIsKeyboardSelect),
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mVisual(aVisual),
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mExtend(aExtend),
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mForceEditableRegion(aForceEditableRegion == ForceEditableRegion::Yes),
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mResultContent(),
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mResultFrame(nullptr),
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mContentOffset(0),
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mAttach(CARET_ASSOCIATE_BEFORE) {}
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// Array which contains index of each SelecionType in Selection::mDOMSelections.
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// For avoiding using if nor switch to retrieve the index, this needs to have
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// -1 for SelectionTypes which won't be created its Selection instance.
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static const int8_t kIndexOfSelections[] = {
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-1, // SelectionType::eInvalid
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-1, // SelectionType::eNone
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0, // SelectionType::eNormal
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1, // SelectionType::eSpellCheck
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2, // SelectionType::eIMERawClause
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3, // SelectionType::eIMESelectedRawClause
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4, // SelectionType::eIMEConvertedClause
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5, // SelectionType::eIMESelectedClause
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6, // SelectionType::eAccessibility
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7, // SelectionType::eFind
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8, // SelectionType::eURLSecondary
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9, // SelectionType::eURLStrikeout
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};
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inline int8_t GetIndexFromSelectionType(SelectionType aSelectionType) {
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// The enum value of eInvalid is -1 and the others are sequential value
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// starting from 0. Therefore, |SelectionType + 1| is the index of
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// kIndexOfSelections.
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return kIndexOfSelections[static_cast<int8_t>(aSelectionType) + 1];
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}
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/*
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The limiter is used specifically for the text areas and textfields
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In that case it is the DIV tag that is anonymously created for the text
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areas/fields. Text nodes and BR nodes fall beneath it. In the case of a
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BR node the limiter will be the parent and the offset will point before or
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after the BR node. In the case of the text node the parent content is
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the text node itself and the offset will be the exact character position.
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The offset is not important to check for validity. Simply look at the
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passed in content. If it equals the limiter then the selection point is valid.
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If its parent it the limiter then the point is also valid. In the case of
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NO limiter all points are valid since you are in a topmost iframe. (browser
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or composer)
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*/
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bool nsFrameSelection::IsValidSelectionPoint(nsINode* aNode) const {
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if (!aNode) {
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return false;
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}
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nsIContent* limiter = GetLimiter();
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if (limiter && limiter != aNode && limiter != aNode->GetParent()) {
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// if newfocus == the limiter. that's ok. but if not there and not parent
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// bad
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return false; // not in the right content. tLimiter said so
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}
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limiter = GetAncestorLimiter();
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return !limiter || aNode->IsInclusiveDescendantOf(limiter);
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}
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namespace mozilla {
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struct MOZ_RAII AutoPrepareFocusRange {
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AutoPrepareFocusRange(Selection* aSelection,
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const bool aMultiRangeSelection) {
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MOZ_ASSERT(aSelection);
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MOZ_ASSERT(aSelection->GetType() == SelectionType::eNormal);
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if (aSelection->mStyledRanges.mRanges.Length() <= 1) {
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return;
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}
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if (aSelection->mFrameSelection->IsUserSelectionReason()) {
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mUserSelect.emplace(aSelection);
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}
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nsTArray<StyledRange>& ranges = aSelection->mStyledRanges.mRanges;
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if (!aSelection->mUserInitiated || aMultiRangeSelection) {
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// Scripted command or the user is starting a new explicit multi-range
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// selection.
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for (StyledRange& entry : ranges) {
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entry.mRange->SetIsGenerated(false);
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}
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return;
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}
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if (!IsAnchorRelativeOperation(
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aSelection->mFrameSelection->mSelectionChangeReasons)) {
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return;
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}
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// This operation is against the anchor but our current mAnchorFocusRange
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// represents the focus in a multi-range selection. The anchor from a user
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// perspective is the most distant generated range on the opposite side.
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// Find that range and make it the mAnchorFocusRange.
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nsRange* const newAnchorFocusRange =
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FindGeneratedRangeMostDistantFromAnchor(*aSelection);
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if (!newAnchorFocusRange) {
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// There are no generated ranges - that's fine.
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return;
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}
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// Setup the new mAnchorFocusRange and mark the old one as generated.
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if (aSelection->mAnchorFocusRange) {
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aSelection->mAnchorFocusRange->SetIsGenerated(true);
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}
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newAnchorFocusRange->SetIsGenerated(false);
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aSelection->mAnchorFocusRange = newAnchorFocusRange;
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RemoveGeneratedRanges(*aSelection);
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if (aSelection->mFrameSelection) {
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aSelection->mFrameSelection->InvalidateDesiredCaretPos();
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}
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}
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private:
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static nsRange* FindGeneratedRangeMostDistantFromAnchor(
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const Selection& aSelection) {
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const nsTArray<StyledRange>& ranges = aSelection.mStyledRanges.mRanges;
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const size_t len = ranges.Length();
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nsRange* result{nullptr};
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if (aSelection.GetDirection() == eDirNext) {
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for (size_t i = 0; i < len; ++i) {
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if (ranges[i].mRange->IsGenerated()) {
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result = ranges[i].mRange;
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break;
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}
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}
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} else {
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size_t i = len;
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while (i--) {
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if (ranges[i].mRange->IsGenerated()) {
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result = ranges[i].mRange;
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break;
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}
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}
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}
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return result;
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}
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static void RemoveGeneratedRanges(Selection& aSelection) {
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RefPtr<nsPresContext> presContext = aSelection.GetPresContext();
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nsTArray<StyledRange>& ranges = aSelection.mStyledRanges.mRanges;
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size_t i = ranges.Length();
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while (i--) {
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nsRange* range = ranges[i].mRange;
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if (range->IsGenerated()) {
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range->UnregisterSelection();
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aSelection.SelectFrames(presContext, range, false);
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ranges.RemoveElementAt(i);
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}
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}
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}
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/**
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* @aParam aSelectionChangeReasons can be multiple of the reasons defined in
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nsISelectionListener.idl.
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*/
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static bool IsAnchorRelativeOperation(const int16_t aSelectionChangeReasons) {
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return aSelectionChangeReasons &
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(nsISelectionListener::DRAG_REASON |
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nsISelectionListener::MOUSEDOWN_REASON |
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nsISelectionListener::MOUSEUP_REASON |
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nsISelectionListener::COLLAPSETOSTART_REASON);
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}
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Maybe<Selection::AutoUserInitiated> mUserSelect;
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};
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} // namespace mozilla
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////////////BEGIN nsFrameSelection methods
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template Result<RefPtr<nsRange>, nsresult>
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nsFrameSelection::CreateRangeExtendedToSomewhere(
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nsDirection aDirection, const nsSelectionAmount aAmount,
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CaretMovementStyle aMovementStyle);
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template Result<RefPtr<StaticRange>, nsresult>
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nsFrameSelection::CreateRangeExtendedToSomewhere(
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nsDirection aDirection, const nsSelectionAmount aAmount,
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CaretMovementStyle aMovementStyle);
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nsFrameSelection::nsFrameSelection(PresShell* aPresShell, nsIContent* aLimiter,
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const bool aAccessibleCaretEnabled) {
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for (size_t i = 0; i < ArrayLength(mDomSelections); i++) {
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mDomSelections[i] = new Selection(kPresentSelectionTypes[i], this);
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}
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#ifdef XP_MACOSX
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// On macOS, cache the current selection to send to service menu of macOS.
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bool enableAutoCopy = true;
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AutoCopyListener::Init(nsIClipboard::kSelectionCache);
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#else // #ifdef XP_MACOSX
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// Check to see if the auto-copy pref is enabled and make the normal
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// Selection notifies auto-copy listener of its changes.
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bool enableAutoCopy = AutoCopyListener::IsPrefEnabled();
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if (enableAutoCopy) {
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AutoCopyListener::Init(nsIClipboard::kSelectionClipboard);
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}
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#endif // #ifdef XP_MACOSX #else
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if (enableAutoCopy) {
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int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
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if (mDomSelections[index]) {
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mDomSelections[index]->NotifyAutoCopy();
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}
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}
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mPresShell = aPresShell;
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mDragState = false;
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mLimiters.mLimiter = aLimiter;
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// This should only ever be initialized on the main thread, so we are OK here.
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MOZ_ASSERT(NS_IsMainThread());
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mAccessibleCaretEnabled = aAccessibleCaretEnabled;
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if (mAccessibleCaretEnabled) {
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int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
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mDomSelections[index]->MaybeNotifyAccessibleCaretEventHub(aPresShell);
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}
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bool plaintextControl = (aLimiter != nullptr);
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bool initSelectEvents =
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plaintextControl ? StaticPrefs::dom_select_events_textcontrols_enabled()
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: StaticPrefs::dom_select_events_enabled();
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Document* doc = aPresShell->GetDocument();
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if (initSelectEvents || (doc && doc->NodePrincipal()->IsSystemPrincipal())) {
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int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
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if (mDomSelections[index]) {
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mDomSelections[index]->EnableSelectionChangeEvent();
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}
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}
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}
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nsFrameSelection::~nsFrameSelection() = default;
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsFrameSelection)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsFrameSelection)
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for (size_t i = 0; i < ArrayLength(tmp->mDomSelections); ++i) {
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tmp->mDomSelections[i] = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK(
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mTableSelection.mClosestInclusiveTableCellAncestor)
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tmp->mTableSelection.mMode = TableSelectionMode::None;
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tmp->mTableSelection.mDragSelectingCells = false;
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTableSelection.mStartSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTableSelection.mEndSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTableSelection.mAppendStartSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTableSelection.mUnselectCellOnMouseUp)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mMaintainedRange.mRange)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mLimiters.mLimiter)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mLimiters.mAncestorLimiter)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFrameSelection)
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if (tmp->mPresShell && tmp->mPresShell->GetDocument() &&
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nsCCUncollectableMarker::InGeneration(
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cb, tmp->mPresShell->GetDocument()->GetMarkedCCGeneration())) {
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return NS_SUCCESS_INTERRUPTED_TRAVERSE;
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}
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for (size_t i = 0; i < ArrayLength(tmp->mDomSelections); ++i) {
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDomSelections[i])
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(
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mTableSelection.mClosestInclusiveTableCellAncestor)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTableSelection.mStartSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTableSelection.mEndSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTableSelection.mAppendStartSelectedCell)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTableSelection.mUnselectCellOnMouseUp)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMaintainedRange.mRange)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLimiters.mLimiter)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLimiters.mAncestorLimiter)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(nsFrameSelection, AddRef)
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NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(nsFrameSelection, Release)
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bool nsFrameSelection::Caret::IsVisualMovement(
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bool aContinueSelection, CaretMovementStyle aMovementStyle) const {
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int32_t movementFlag = StaticPrefs::bidi_edit_caret_movement_style();
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return aMovementStyle == eVisual ||
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(aMovementStyle == eUsePrefStyle &&
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(movementFlag == 1 || (movementFlag == 2 && !aContinueSelection)));
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}
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// Get the x (or y, in vertical writing mode) position requested
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// by the Key Handling for line-up/down
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nsresult nsFrameSelection::DesiredCaretPos::FetchPos(
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nsPoint& aDesiredCaretPos, const PresShell& aPresShell,
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Selection& aNormalSelection) const {
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MOZ_ASSERT(aNormalSelection.GetType() == SelectionType::eNormal);
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if (mIsSet) {
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aDesiredCaretPos = mValue;
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return NS_OK;
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}
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RefPtr<nsCaret> caret = aPresShell.GetCaret();
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if (!caret) {
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return NS_ERROR_NULL_POINTER;
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}
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caret->SetSelection(&aNormalSelection);
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nsRect coord;
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nsIFrame* caretFrame = caret->GetGeometry(&coord);
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if (!caretFrame) {
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return NS_ERROR_FAILURE;
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}
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nsPoint viewOffset(0, 0);
|
|
nsView* view = nullptr;
|
|
caretFrame->GetOffsetFromView(viewOffset, &view);
|
|
if (view) {
|
|
coord += viewOffset;
|
|
}
|
|
aDesiredCaretPos = coord.TopLeft();
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsFrameSelection::InvalidateDesiredCaretPos() // do not listen to
|
|
// mDesiredCaretPos.mValue;
|
|
// you must get another.
|
|
{
|
|
mDesiredCaretPos.Invalidate();
|
|
}
|
|
|
|
void nsFrameSelection::DesiredCaretPos::Invalidate() { mIsSet = false; }
|
|
|
|
void nsFrameSelection::DesiredCaretPos::Set(const nsPoint& aPos) {
|
|
mValue = aPos;
|
|
mIsSet = true;
|
|
}
|
|
|
|
nsresult nsFrameSelection::ConstrainFrameAndPointToAnchorSubtree(
|
|
nsIFrame* aFrame, const nsPoint& aPoint, nsIFrame** aRetFrame,
|
|
nsPoint& aRetPoint) const {
|
|
//
|
|
// The whole point of this method is to return a frame and point that
|
|
// that lie within the same valid subtree as the anchor node's frame,
|
|
// for use with the method GetContentAndOffsetsFromPoint().
|
|
//
|
|
// A valid subtree is defined to be one where all the content nodes in
|
|
// the tree have a valid parent-child relationship.
|
|
//
|
|
// If the anchor frame and aFrame are in the same subtree, aFrame will
|
|
// be returned in aRetFrame. If they are in different subtrees, we
|
|
// return the frame for the root of the subtree.
|
|
//
|
|
|
|
if (!aFrame || !aRetFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
*aRetFrame = aFrame;
|
|
aRetPoint = aPoint;
|
|
|
|
//
|
|
// Get the frame and content for the selection's anchor point!
|
|
//
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> anchorContent =
|
|
do_QueryInterface(mDomSelections[index]->GetAnchorNode());
|
|
if (!anchorContent) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//
|
|
// Now find the root of the subtree containing the anchor's content.
|
|
//
|
|
|
|
NS_ENSURE_STATE(mPresShell);
|
|
RefPtr<PresShell> presShell = mPresShell;
|
|
nsIContent* anchorRoot = anchorContent->GetSelectionRootContent(presShell);
|
|
NS_ENSURE_TRUE(anchorRoot, NS_ERROR_UNEXPECTED);
|
|
|
|
//
|
|
// Now find the root of the subtree containing aFrame's content.
|
|
//
|
|
|
|
nsCOMPtr<nsIContent> content = aFrame->GetContent();
|
|
|
|
if (content) {
|
|
nsIContent* contentRoot = content->GetSelectionRootContent(presShell);
|
|
NS_ENSURE_TRUE(contentRoot, NS_ERROR_UNEXPECTED);
|
|
|
|
if (anchorRoot == contentRoot) {
|
|
// If the aFrame's content isn't the capturing content, it should be
|
|
// a descendant. At this time, we can return simply.
|
|
nsIContent* capturedContent = PresShell::GetCapturingContent();
|
|
if (capturedContent != content) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Find the frame under the mouse cursor with the root frame.
|
|
// At this time, don't use the anchor's frame because it may not have
|
|
// fixed positioned frames.
|
|
nsIFrame* rootFrame = presShell->GetRootFrame();
|
|
nsPoint ptInRoot = aPoint + aFrame->GetOffsetTo(rootFrame);
|
|
nsIFrame* cursorFrame =
|
|
nsLayoutUtils::GetFrameForPoint(RelativeTo{rootFrame}, ptInRoot);
|
|
|
|
// If the mouse cursor in on a frame which is descendant of same
|
|
// selection root, we can expand the selection to the frame.
|
|
if (cursorFrame && cursorFrame->PresShell() == presShell) {
|
|
nsCOMPtr<nsIContent> cursorContent = cursorFrame->GetContent();
|
|
NS_ENSURE_TRUE(cursorContent, NS_ERROR_FAILURE);
|
|
nsIContent* cursorContentRoot =
|
|
cursorContent->GetSelectionRootContent(presShell);
|
|
NS_ENSURE_TRUE(cursorContentRoot, NS_ERROR_UNEXPECTED);
|
|
if (cursorContentRoot == anchorRoot) {
|
|
*aRetFrame = cursorFrame;
|
|
aRetPoint = aPoint + aFrame->GetOffsetTo(cursorFrame);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
// Otherwise, e.g., the cursor isn't on any frames (e.g., the mouse
|
|
// cursor is out of the window), we should use the frame of the anchor
|
|
// root.
|
|
}
|
|
}
|
|
|
|
//
|
|
// When we can't find a frame which is under the mouse cursor and has a same
|
|
// selection root as the anchor node's, we should return the selection root
|
|
// frame.
|
|
//
|
|
|
|
*aRetFrame = anchorRoot->GetPrimaryFrame();
|
|
|
|
if (!*aRetFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//
|
|
// Now make sure that aRetPoint is converted to the same coordinate
|
|
// system used by aRetFrame.
|
|
//
|
|
|
|
aRetPoint = aPoint + aFrame->GetOffsetTo(*aRetFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsFrameSelection::SetCaretBidiLevelAndMaybeSchedulePaint(
|
|
nsBidiLevel aLevel) {
|
|
// If the current level is undefined, we have just inserted new text.
|
|
// In this case, we don't want to reset the keyboard language
|
|
mCaret.mBidiLevel = aLevel;
|
|
|
|
RefPtr<nsCaret> caret;
|
|
if (mPresShell && (caret = mPresShell->GetCaret())) {
|
|
caret->SchedulePaint();
|
|
}
|
|
}
|
|
|
|
nsBidiLevel nsFrameSelection::GetCaretBidiLevel() const {
|
|
return mCaret.mBidiLevel;
|
|
}
|
|
|
|
void nsFrameSelection::UndefineCaretBidiLevel() {
|
|
mCaret.mBidiLevel |= BIDI_LEVEL_UNDEFINED;
|
|
}
|
|
|
|
#ifdef PRINT_RANGE
|
|
void printRange(nsRange* aDomRange) {
|
|
if (!aDomRange) {
|
|
printf("NULL Range\n");
|
|
}
|
|
nsINode* startNode = aDomRange->GetStartContainer();
|
|
nsINode* endNode = aDomRange->GetEndContainer();
|
|
int32_t startOffset = aDomRange->StartOffset();
|
|
int32_t endOffset = aDomRange->EndOffset();
|
|
|
|
printf("range: 0x%lx\t start: 0x%lx %ld, \t end: 0x%lx,%ld\n",
|
|
(unsigned long)aDomRange, (unsigned long)startNode, (long)startOffset,
|
|
(unsigned long)endNode, (long)endOffset);
|
|
}
|
|
#endif /* PRINT_RANGE */
|
|
|
|
static nsAtom* GetTag(nsINode* aNode) {
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
if (!content) {
|
|
MOZ_ASSERT_UNREACHABLE("bad node passed to GetTag()");
|
|
return nullptr;
|
|
}
|
|
|
|
return content->NodeInfo()->NameAtom();
|
|
}
|
|
|
|
// Returns the parent
|
|
nsINode* ParentOffset(nsINode* aNode, int32_t* aChildOffset) {
|
|
if (!aNode || !aChildOffset) return nullptr;
|
|
|
|
nsIContent* parent = aNode->GetParent();
|
|
if (parent) {
|
|
*aChildOffset = parent->ComputeIndexOf(aNode);
|
|
|
|
return parent;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor.
|
|
*/
|
|
static nsINode* GetClosestInclusiveTableCellAncestor(nsINode* aDomNode) {
|
|
if (!aDomNode) return nullptr;
|
|
nsINode* current = aDomNode;
|
|
// Start with current node and look for a table cell
|
|
while (current) {
|
|
nsAtom* tag = GetTag(current);
|
|
if (tag == nsGkAtoms::td || tag == nsGkAtoms::th) return current;
|
|
current = current->GetParent();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static nsDirection GetCaretDirection(const nsIFrame& aFrame,
|
|
nsDirection aDirection,
|
|
bool aVisualMovement) {
|
|
const nsBidiDirection paragraphDirection =
|
|
nsBidiPresUtils::ParagraphDirection(&aFrame);
|
|
return (aVisualMovement && paragraphDirection == NSBIDI_RTL)
|
|
? nsDirection(1 - aDirection)
|
|
: aDirection;
|
|
}
|
|
|
|
nsresult nsFrameSelection::MoveCaret(nsDirection aDirection,
|
|
bool aContinueSelection,
|
|
const nsSelectionAmount aAmount,
|
|
CaretMovementStyle aMovementStyle) {
|
|
NS_ENSURE_STATE(mPresShell);
|
|
// Flush out layout, since we need it to be up to date to do caret
|
|
// positioning.
|
|
OwningNonNull<PresShell> presShell(*mPresShell);
|
|
presShell->FlushPendingNotifications(FlushType::Layout);
|
|
|
|
if (!mPresShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext* context = mPresShell->GetPresContext();
|
|
if (!context) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
const RefPtr<Selection> sel = mDomSelections[index];
|
|
if (!sel) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
int32_t scrollFlags = Selection::SCROLL_FOR_CARET_MOVE;
|
|
if (sel->IsEditorSelection()) {
|
|
// If caret moves in editor, it should cause scrolling even if it's in
|
|
// overflow: hidden;.
|
|
scrollFlags |= Selection::SCROLL_OVERFLOW_HIDDEN;
|
|
}
|
|
|
|
int32_t caretStyle = StaticPrefs::layout_selection_caret_style();
|
|
if (caretStyle == 0
|
|
#ifdef XP_WIN
|
|
&& aAmount != eSelectLine
|
|
#endif
|
|
) {
|
|
// Put caret at the selection edge in the |aDirection| direction.
|
|
caretStyle = 2;
|
|
}
|
|
|
|
const bool doCollapse = !sel->IsCollapsed() && !aContinueSelection &&
|
|
caretStyle == 2 && aAmount <= eSelectLine;
|
|
if (doCollapse) {
|
|
if (aDirection == eDirPrevious) {
|
|
SetChangeReasons(nsISelectionListener::COLLAPSETOSTART_REASON);
|
|
mCaret.mHint = CARET_ASSOCIATE_AFTER;
|
|
} else {
|
|
SetChangeReasons(nsISelectionListener::COLLAPSETOEND_REASON);
|
|
mCaret.mHint = CARET_ASSOCIATE_BEFORE;
|
|
}
|
|
} else {
|
|
SetChangeReasons(nsISelectionListener::KEYPRESS_REASON);
|
|
}
|
|
|
|
AutoPrepareFocusRange prep(sel, false);
|
|
|
|
// we must keep this around and revalidate it when its just UP/DOWN
|
|
nsPoint desiredPos(0, 0);
|
|
|
|
if (aAmount == eSelectLine) {
|
|
nsresult result = mDesiredCaretPos.FetchPos(desiredPos, *mPresShell, *sel);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
mDesiredCaretPos.Set(desiredPos);
|
|
}
|
|
|
|
bool visualMovement =
|
|
mCaret.IsVisualMovement(aContinueSelection, aMovementStyle);
|
|
nsIFrame* frame = sel->GetPrimaryFrameForFocusNode(visualMovement);
|
|
if (!frame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
Result<bool, nsresult> isIntraLineCaretMove = IsIntraLineCaretMove(aAmount);
|
|
nsDirection direction{aDirection};
|
|
if (isIntraLineCaretMove.isErr()) {
|
|
return isIntraLineCaretMove.unwrapErr();
|
|
}
|
|
if (isIntraLineCaretMove.inspect()) {
|
|
// Forget old caret position for moving caret to different line since
|
|
// caret position may be changed.
|
|
mDesiredCaretPos.Invalidate();
|
|
direction = GetCaretDirection(*frame, aDirection, visualMovement);
|
|
}
|
|
|
|
if (doCollapse) {
|
|
const nsRange* anchorFocusRange = sel->GetAnchorFocusRange();
|
|
if (anchorFocusRange) {
|
|
RefPtr<nsINode> node;
|
|
int32_t offset;
|
|
if (visualMovement && nsBidiPresUtils::IsReversedDirectionFrame(frame)) {
|
|
direction = nsDirection(1 - direction);
|
|
}
|
|
if (direction == eDirPrevious) {
|
|
node = anchorFocusRange->GetStartContainer();
|
|
offset = anchorFocusRange->StartOffset();
|
|
} else {
|
|
node = anchorFocusRange->GetEndContainer();
|
|
offset = anchorFocusRange->EndOffset();
|
|
}
|
|
sel->CollapseInLimiter(node, offset);
|
|
}
|
|
sel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
ScrollAxis(), ScrollAxis(), scrollFlags);
|
|
return NS_OK;
|
|
}
|
|
|
|
CaretAssociateHint tHint(mCaret.mHint); // temporary variable so we dont set
|
|
// mCaret.mHint until it is necessary
|
|
|
|
Result<nsPeekOffsetStruct, nsresult> result = PeekOffsetForCaretMove(
|
|
direction, aContinueSelection, aAmount, aMovementStyle, desiredPos);
|
|
nsresult rv;
|
|
if (result.isOk() && result.inspect().mResultContent) {
|
|
const nsPeekOffsetStruct& pos = result.inspect();
|
|
nsIFrame* theFrame;
|
|
int32_t currentOffset, frameStart, frameEnd;
|
|
|
|
if (aAmount <= eSelectWordNoSpace) {
|
|
// For left/right, PeekOffset() sets pos.mResultFrame correctly, but does
|
|
// not set pos.mAttachForward, so determine the hint here based on the
|
|
// result frame and offset: If we're at the end of a text frame, set the
|
|
// hint to ASSOCIATE_BEFORE to indicate that we want the caret displayed
|
|
// at the end of this frame, not at the beginning of the next one.
|
|
theFrame = pos.mResultFrame;
|
|
theFrame->GetOffsets(frameStart, frameEnd);
|
|
currentOffset = pos.mContentOffset;
|
|
if (frameEnd == currentOffset && !(frameStart == 0 && frameEnd == 0))
|
|
tHint = CARET_ASSOCIATE_BEFORE;
|
|
else
|
|
tHint = CARET_ASSOCIATE_AFTER;
|
|
} else {
|
|
// For up/down and home/end, pos.mResultFrame might not be set correctly,
|
|
// or not at all. In these cases, get the frame based on the content and
|
|
// hint returned by PeekOffset().
|
|
tHint = pos.mAttach;
|
|
theFrame = GetFrameForNodeOffset(pos.mResultContent, pos.mContentOffset,
|
|
tHint, ¤tOffset);
|
|
if (!theFrame) return NS_ERROR_FAILURE;
|
|
|
|
theFrame->GetOffsets(frameStart, frameEnd);
|
|
}
|
|
|
|
if (context->BidiEnabled()) {
|
|
switch (aAmount) {
|
|
case eSelectBeginLine:
|
|
case eSelectEndLine: {
|
|
// In Bidi contexts, PeekOffset calculates pos.mContentOffset
|
|
// differently depending on whether the movement is visual or logical.
|
|
// For visual movement, pos.mContentOffset depends on the direction-
|
|
// ality of the first/last frame on the line (theFrame), and the caret
|
|
// directionality must correspond.
|
|
FrameBidiData bidiData = theFrame->GetBidiData();
|
|
SetCaretBidiLevelAndMaybeSchedulePaint(
|
|
visualMovement ? bidiData.embeddingLevel : bidiData.baseLevel);
|
|
break;
|
|
}
|
|
default:
|
|
// If the current position is not a frame boundary, it's enough just
|
|
// to take the Bidi level of the current frame
|
|
if ((pos.mContentOffset != frameStart &&
|
|
pos.mContentOffset != frameEnd) ||
|
|
eSelectLine == aAmount) {
|
|
SetCaretBidiLevelAndMaybeSchedulePaint(
|
|
theFrame->GetEmbeddingLevel());
|
|
} else {
|
|
BidiLevelFromMove(mPresShell, pos.mResultContent,
|
|
pos.mContentOffset, aAmount, tHint);
|
|
}
|
|
}
|
|
}
|
|
// "pos" is on the stack, so pos.mResultContent has stack lifetime, so using
|
|
// MOZ_KnownLive is ok.
|
|
const FocusMode focusMode = aContinueSelection
|
|
? FocusMode::kExtendSelection
|
|
: FocusMode::kCollapseToNewPoint;
|
|
rv = TakeFocus(MOZ_KnownLive(pos.mResultContent), pos.mContentOffset,
|
|
pos.mContentOffset, tHint, focusMode);
|
|
} else if (aAmount <= eSelectWordNoSpace && direction == eDirNext &&
|
|
!aContinueSelection) {
|
|
// Collapse selection if PeekOffset failed, we either
|
|
// 1. bumped into the BRFrame, bug 207623
|
|
// 2. had select-all in a text input (DIV range), bug 352759.
|
|
bool isBRFrame = frame->IsBrFrame();
|
|
RefPtr<nsINode> node = sel->GetFocusNode();
|
|
sel->CollapseInLimiter(node, sel->FocusOffset());
|
|
// Note: 'frame' might be dead here.
|
|
if (!isBRFrame) {
|
|
mCaret.mHint = CARET_ASSOCIATE_BEFORE; // We're now at the end of the
|
|
// frame to the left.
|
|
}
|
|
rv = NS_OK;
|
|
} else {
|
|
rv = result.isErr() ? result.unwrapErr() : NS_OK;
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = sel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
ScrollAxis(), ScrollAxis(), scrollFlags);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
Result<nsPeekOffsetStruct, nsresult> nsFrameSelection::PeekOffsetForCaretMove(
|
|
nsDirection aDirection, bool aContinueSelection,
|
|
const nsSelectionAmount aAmount, CaretMovementStyle aMovementStyle,
|
|
const nsPoint& aDesiredCaretPos) const {
|
|
Selection* selection =
|
|
mDomSelections[GetIndexFromSelectionType(SelectionType::eNormal)];
|
|
if (!selection) {
|
|
return Err(NS_ERROR_NULL_POINTER);
|
|
}
|
|
|
|
const bool visualMovement =
|
|
mCaret.IsVisualMovement(aContinueSelection, aMovementStyle);
|
|
|
|
int32_t offsetused = 0;
|
|
nsIFrame* frame =
|
|
selection->GetPrimaryFrameForFocusNode(visualMovement, &offsetused);
|
|
if (!frame) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
const auto kForceEditableRegion =
|
|
selection->IsEditorSelection()
|
|
? nsPeekOffsetStruct::ForceEditableRegion::Yes
|
|
: nsPeekOffsetStruct::ForceEditableRegion::No;
|
|
|
|
// set data using mLimiters.mLimiter to stop on scroll views. If we have a
|
|
// limiter then we stop peeking when we hit scrollable views. If no limiter
|
|
// then just let it go ahead
|
|
nsPeekOffsetStruct pos(aAmount, aDirection, offsetused, aDesiredCaretPos,
|
|
true, !!mLimiters.mLimiter, true, visualMovement,
|
|
aContinueSelection, kForceEditableRegion);
|
|
nsresult rv = frame->PeekOffset(&pos);
|
|
if (NS_FAILED(rv)) {
|
|
return Err(rv);
|
|
}
|
|
return pos;
|
|
}
|
|
|
|
nsPrevNextBidiLevels nsFrameSelection::GetPrevNextBidiLevels(
|
|
nsIContent* aNode, uint32_t aContentOffset, bool aJumpLines) const {
|
|
return GetPrevNextBidiLevels(aNode, aContentOffset, mCaret.mHint, aJumpLines);
|
|
}
|
|
|
|
// static
|
|
nsPrevNextBidiLevels nsFrameSelection::GetPrevNextBidiLevels(
|
|
nsIContent* aNode, uint32_t aContentOffset, CaretAssociateHint aHint,
|
|
bool aJumpLines) {
|
|
// Get the level of the frames on each side
|
|
nsIFrame* currentFrame;
|
|
int32_t currentOffset;
|
|
int32_t frameStart, frameEnd;
|
|
nsDirection direction;
|
|
|
|
nsPrevNextBidiLevels levels;
|
|
levels.SetData(nullptr, nullptr, 0, 0);
|
|
|
|
currentFrame =
|
|
GetFrameForNodeOffset(aNode, aContentOffset, aHint, ¤tOffset);
|
|
if (!currentFrame) return levels;
|
|
|
|
currentFrame->GetOffsets(frameStart, frameEnd);
|
|
|
|
if (0 == frameStart && 0 == frameEnd)
|
|
direction = eDirPrevious;
|
|
else if (frameStart == currentOffset)
|
|
direction = eDirPrevious;
|
|
else if (frameEnd == currentOffset)
|
|
direction = eDirNext;
|
|
else {
|
|
// we are neither at the beginning nor at the end of the frame, so we have
|
|
// no worries
|
|
nsBidiLevel currentLevel = currentFrame->GetEmbeddingLevel();
|
|
levels.SetData(currentFrame, currentFrame, currentLevel, currentLevel);
|
|
return levels;
|
|
}
|
|
|
|
nsIFrame* newFrame =
|
|
currentFrame
|
|
->GetFrameFromDirection(direction, false, aJumpLines, true, false)
|
|
.mFrame;
|
|
|
|
FrameBidiData currentBidi = currentFrame->GetBidiData();
|
|
nsBidiLevel currentLevel = currentBidi.embeddingLevel;
|
|
nsBidiLevel newLevel =
|
|
newFrame ? newFrame->GetEmbeddingLevel() : currentBidi.baseLevel;
|
|
|
|
// If not jumping lines, disregard br frames, since they might be positioned
|
|
// incorrectly.
|
|
// XXX This could be removed once bug 339786 is fixed.
|
|
if (!aJumpLines) {
|
|
if (currentFrame->IsBrFrame()) {
|
|
currentFrame = nullptr;
|
|
currentLevel = currentBidi.baseLevel;
|
|
}
|
|
if (newFrame && newFrame->IsBrFrame()) {
|
|
newFrame = nullptr;
|
|
newLevel = currentBidi.baseLevel;
|
|
}
|
|
}
|
|
|
|
if (direction == eDirNext)
|
|
levels.SetData(currentFrame, newFrame, currentLevel, newLevel);
|
|
else
|
|
levels.SetData(newFrame, currentFrame, newLevel, currentLevel);
|
|
|
|
return levels;
|
|
}
|
|
|
|
nsresult nsFrameSelection::GetFrameFromLevel(nsIFrame* aFrameIn,
|
|
nsDirection aDirection,
|
|
nsBidiLevel aBidiLevel,
|
|
nsIFrame** aFrameOut) const {
|
|
NS_ENSURE_STATE(mPresShell);
|
|
nsBidiLevel foundLevel = 0;
|
|
nsIFrame* foundFrame = aFrameIn;
|
|
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
nsresult result;
|
|
nsCOMPtr<nsIFrameTraversal> trav(
|
|
do_CreateInstance(kFrameTraversalCID, &result));
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
result =
|
|
trav->NewFrameTraversal(getter_AddRefs(frameTraversal),
|
|
mPresShell->GetPresContext(), aFrameIn, eLeaf,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
false, // aFollowOOFs
|
|
false // aSkipPopupChecks
|
|
);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
do {
|
|
*aFrameOut = foundFrame;
|
|
foundFrame = frameTraversal->Traverse(aDirection == eDirNext);
|
|
if (!foundFrame) return NS_ERROR_FAILURE;
|
|
foundLevel = foundFrame->GetEmbeddingLevel();
|
|
|
|
} while (foundLevel > aBidiLevel);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFrameSelection::MaintainSelection(nsSelectionAmount aAmount) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
mMaintainedRange.MaintainAnchorFocusRange(*mDomSelections[index], aAmount);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* After moving the caret, its Bidi level is set according to the following
|
|
* rules:
|
|
*
|
|
* After moving over a character with left/right arrow, set to the Bidi level
|
|
* of the last moved over character. After Home and End, set to the paragraph
|
|
* embedding level. After up/down arrow, PageUp/Down, set to the lower level of
|
|
* the 2 surrounding characters. After mouse click, set to the level of the
|
|
* current frame.
|
|
*
|
|
* The following two methods use GetPrevNextBidiLevels to determine the new
|
|
* Bidi level. BidiLevelFromMove is called when the caret is moved in response
|
|
* to a keyboard event
|
|
*
|
|
* @param aPresShell is the presentation shell
|
|
* @param aNode is the content node
|
|
* @param aContentOffset is the new caret position, as an offset into aNode
|
|
* @param aAmount is the amount of the move that gave the caret its new position
|
|
* @param aHint is the hint indicating in what logical direction the caret moved
|
|
*/
|
|
void nsFrameSelection::BidiLevelFromMove(PresShell* aPresShell,
|
|
nsIContent* aNode,
|
|
uint32_t aContentOffset,
|
|
nsSelectionAmount aAmount,
|
|
CaretAssociateHint aHint) {
|
|
switch (aAmount) {
|
|
// Movement within the line: the new cursor Bidi level is the level of the
|
|
// last character moved over
|
|
case eSelectCharacter:
|
|
case eSelectCluster:
|
|
case eSelectWord:
|
|
case eSelectWordNoSpace:
|
|
case eSelectBeginLine:
|
|
case eSelectEndLine:
|
|
case eSelectNoAmount: {
|
|
nsPrevNextBidiLevels levels =
|
|
GetPrevNextBidiLevels(aNode, aContentOffset, aHint, false);
|
|
|
|
SetCaretBidiLevelAndMaybeSchedulePaint(aHint == CARET_ASSOCIATE_BEFORE
|
|
? levels.mLevelBefore
|
|
: levels.mLevelAfter);
|
|
break;
|
|
}
|
|
/*
|
|
// Up and Down: the new cursor Bidi level is the smaller of the two
|
|
surrounding characters case eSelectLine: case eSelectParagraph:
|
|
GetPrevNextBidiLevels(aContext, aNode, aContentOffset, &firstFrame,
|
|
&secondFrame, &firstLevel, &secondLevel);
|
|
aPresShell->SetCaretBidiLevelAndMaybeSchedulePaint(std::min(firstLevel,
|
|
secondLevel)); break;
|
|
*/
|
|
|
|
default:
|
|
UndefineCaretBidiLevel();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* BidiLevelFromClick is called when the caret is repositioned by clicking the
|
|
* mouse
|
|
*
|
|
* @param aNode is the content node
|
|
* @param aContentOffset is the new caret position, as an offset into aNode
|
|
*/
|
|
void nsFrameSelection::BidiLevelFromClick(nsIContent* aNode,
|
|
uint32_t aContentOffset) {
|
|
nsIFrame* clickInFrame = nullptr;
|
|
int32_t OffsetNotUsed;
|
|
|
|
clickInFrame = GetFrameForNodeOffset(aNode, aContentOffset, mCaret.mHint,
|
|
&OffsetNotUsed);
|
|
if (!clickInFrame) return;
|
|
|
|
SetCaretBidiLevelAndMaybeSchedulePaint(clickInFrame->GetEmbeddingLevel());
|
|
}
|
|
|
|
void nsFrameSelection::MaintainedRange::AdjustNormalSelection(
|
|
const nsIContent* aContent, const int32_t aOffset,
|
|
Selection& aNormalSelection) const {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
if (!mRange || !aContent) {
|
|
return;
|
|
}
|
|
|
|
nsINode* rangeStartNode = mRange->GetStartContainer();
|
|
nsINode* rangeEndNode = mRange->GetEndContainer();
|
|
int32_t rangeStartOffset = mRange->StartOffset();
|
|
int32_t rangeEndOffset = mRange->EndOffset();
|
|
|
|
const Maybe<int32_t> relToStart = nsContentUtils::ComparePoints(
|
|
rangeStartNode, rangeStartOffset, aContent, aOffset);
|
|
if (NS_WARN_IF(!relToStart)) {
|
|
// Potentially handle this properly when Selection across Shadow DOM
|
|
// boundary is implemented
|
|
// (https://bugzilla.mozilla.org/show_bug.cgi?id=1607497).
|
|
return;
|
|
}
|
|
|
|
const Maybe<int32_t> relToEnd = nsContentUtils::ComparePoints(
|
|
rangeEndNode, rangeEndOffset, aContent, aOffset);
|
|
if (NS_WARN_IF(!relToEnd)) {
|
|
// Potentially handle this properly when Selection across Shadow DOM
|
|
// boundary is implemented
|
|
// (https://bugzilla.mozilla.org/show_bug.cgi?id=1607497).
|
|
return;
|
|
}
|
|
|
|
// If aContent/aOffset is inside (or at the edge of) the maintained
|
|
// selection, or if it is on the "anchor" side of the maintained selection,
|
|
// we need to do something.
|
|
if ((*relToStart <= 0 && *relToEnd >= 0) ||
|
|
(*relToStart > 0 && aNormalSelection.GetDirection() == eDirNext) ||
|
|
(*relToEnd < 0 && aNormalSelection.GetDirection() == eDirPrevious)) {
|
|
// Set the current range to the maintained range.
|
|
aNormalSelection.ReplaceAnchorFocusRange(mRange);
|
|
// Set the direction of the selection so that the anchor will be on the
|
|
// far side of the maintained selection, relative to aContent/aOffset.
|
|
aNormalSelection.SetDirection(*relToStart > 0 ? eDirPrevious : eDirNext);
|
|
}
|
|
}
|
|
|
|
void nsFrameSelection::MaintainedRange::AdjustContentOffsets(
|
|
nsIFrame::ContentOffsets& aOffsets, const bool aScrollViewStop) const {
|
|
// Adjust offsets according to maintained amount
|
|
if (mRange && mAmount != eSelectNoAmount) {
|
|
nsINode* rangenode = mRange->GetStartContainer();
|
|
int32_t rangeOffset = mRange->StartOffset();
|
|
const Maybe<int32_t> relativePosition = nsContentUtils::ComparePoints(
|
|
rangenode, rangeOffset, aOffsets.content, aOffsets.offset);
|
|
if (NS_WARN_IF(!relativePosition)) {
|
|
// Potentially handle this properly when Selection across Shadow DOM
|
|
// boundary is implemented
|
|
// (https://bugzilla.mozilla.org/show_bug.cgi?id=1607497).
|
|
return;
|
|
}
|
|
|
|
nsDirection direction = *relativePosition > 0 ? eDirPrevious : eDirNext;
|
|
nsSelectionAmount amount = mAmount;
|
|
if (amount == eSelectBeginLine && direction == eDirNext) {
|
|
amount = eSelectEndLine;
|
|
}
|
|
|
|
int32_t offset;
|
|
nsIFrame* frame = GetFrameForNodeOffset(aOffsets.content, aOffsets.offset,
|
|
CARET_ASSOCIATE_AFTER, &offset);
|
|
|
|
if (frame && amount == eSelectWord && direction == eDirPrevious) {
|
|
// To avoid selecting the previous word when at start of word,
|
|
// first move one character forward.
|
|
nsPeekOffsetStruct charPos(eSelectCharacter, eDirNext, offset,
|
|
nsPoint(0, 0), false, aScrollViewStop, false,
|
|
false, false);
|
|
if (NS_SUCCEEDED(frame->PeekOffset(&charPos))) {
|
|
frame = charPos.mResultFrame;
|
|
offset = charPos.mContentOffset;
|
|
}
|
|
}
|
|
|
|
nsPeekOffsetStruct pos(amount, direction, offset, nsPoint(0, 0), false,
|
|
aScrollViewStop, false, false, false);
|
|
|
|
if (frame && NS_SUCCEEDED(frame->PeekOffset(&pos)) && pos.mResultContent) {
|
|
aOffsets.content = pos.mResultContent;
|
|
aOffsets.offset = pos.mContentOffset;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameSelection::MaintainedRange::MaintainAnchorFocusRange(
|
|
const Selection& aNormalSelection, const nsSelectionAmount aAmount) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
mAmount = aAmount;
|
|
|
|
const nsRange* anchorFocusRange = aNormalSelection.GetAnchorFocusRange();
|
|
if (anchorFocusRange && aAmount != eSelectNoAmount) {
|
|
mRange = anchorFocusRange->CloneRange();
|
|
return;
|
|
}
|
|
|
|
mRange = nullptr;
|
|
}
|
|
|
|
nsresult nsFrameSelection::HandleClick(nsIContent* aNewFocus,
|
|
uint32_t aContentOffset,
|
|
uint32_t aContentEndOffset,
|
|
const FocusMode aFocusMode,
|
|
CaretAssociateHint aHint) {
|
|
if (!aNewFocus) return NS_ERROR_INVALID_ARG;
|
|
|
|
mDesiredCaretPos.Invalidate();
|
|
|
|
if (aFocusMode != FocusMode::kExtendSelection) {
|
|
mMaintainedRange.mRange = nullptr;
|
|
if (!IsValidSelectionPoint(aNewFocus)) {
|
|
mLimiters.mAncestorLimiter = nullptr;
|
|
}
|
|
}
|
|
|
|
// Don't take focus when dragging off of a table
|
|
if (!mTableSelection.mDragSelectingCells) {
|
|
BidiLevelFromClick(aNewFocus, aContentOffset);
|
|
SetChangeReasons(nsISelectionListener::MOUSEDOWN_REASON +
|
|
nsISelectionListener::DRAG_REASON);
|
|
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
MOZ_ASSERT(selection);
|
|
|
|
if (aFocusMode == FocusMode::kExtendSelection) {
|
|
mMaintainedRange.AdjustNormalSelection(aNewFocus, aContentOffset,
|
|
*selection);
|
|
}
|
|
|
|
AutoPrepareFocusRange prep(selection,
|
|
aFocusMode == FocusMode::kMultiRangeSelection);
|
|
return TakeFocus(aNewFocus, aContentOffset, aContentEndOffset, aHint,
|
|
aFocusMode);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsFrameSelection::HandleDrag(nsIFrame* aFrame, const nsPoint& aPoint) {
|
|
if (!aFrame || !mPresShell) {
|
|
return;
|
|
}
|
|
|
|
nsresult result;
|
|
nsIFrame* newFrame = 0;
|
|
nsPoint newPoint;
|
|
|
|
result = ConstrainFrameAndPointToAnchorSubtree(aFrame, aPoint, &newFrame,
|
|
newPoint);
|
|
if (NS_FAILED(result)) return;
|
|
if (!newFrame) return;
|
|
|
|
nsIFrame::ContentOffsets offsets =
|
|
newFrame->GetContentOffsetsFromPoint(newPoint);
|
|
if (!offsets.content) return;
|
|
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
if (newFrame->IsSelected() && selection) {
|
|
// `MOZ_KnownLive` required because of
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1636889.
|
|
mMaintainedRange.AdjustNormalSelection(MOZ_KnownLive(offsets.content),
|
|
offsets.offset, *selection);
|
|
}
|
|
|
|
const bool scrollViewStop = mLimiters.mLimiter != nullptr;
|
|
mMaintainedRange.AdjustContentOffsets(offsets, scrollViewStop);
|
|
|
|
// TODO: no click has happened, rename `HandleClick`.
|
|
HandleClick(offsets.content, offsets.offset, offsets.offset,
|
|
FocusMode::kExtendSelection, offsets.associate);
|
|
}
|
|
|
|
nsresult nsFrameSelection::StartAutoScrollTimer(nsIFrame* aFrame,
|
|
const nsPoint& aPoint,
|
|
uint32_t aDelay) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
return selection->StartAutoScrollTimer(aFrame, aPoint, aDelay);
|
|
}
|
|
|
|
void nsFrameSelection::StopAutoScrollTimer() {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) {
|
|
return;
|
|
}
|
|
|
|
mDomSelections[index]->StopAutoScrollTimer();
|
|
}
|
|
|
|
// static
|
|
nsINode* nsFrameSelection::TableSelection::IsContentInActivelyEditableTableCell(
|
|
nsPresContext* aContext, nsIContent* aContent) {
|
|
if (!aContext) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<HTMLEditor> htmlEditor = nsContentUtils::GetHTMLEditor(aContext);
|
|
if (!htmlEditor) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsINode* inclusiveTableCellAncestor =
|
|
GetClosestInclusiveTableCellAncestor(aContent);
|
|
if (!inclusiveTableCellAncestor) {
|
|
return nullptr;
|
|
}
|
|
|
|
const Element* editorHostNode = htmlEditor->GetActiveEditingHost();
|
|
if (!editorHostNode) {
|
|
return nullptr;
|
|
}
|
|
|
|
const bool editableCell =
|
|
inclusiveTableCellAncestor->IsInclusiveDescendantOf(editorHostNode);
|
|
return editableCell ? inclusiveTableCellAncestor : nullptr;
|
|
}
|
|
|
|
/**
|
|
hard to go from nodes to frames, easy the other way!
|
|
*/
|
|
nsresult nsFrameSelection::TakeFocus(nsIContent* const aNewFocus,
|
|
uint32_t aContentOffset,
|
|
uint32_t aContentEndOffset,
|
|
CaretAssociateHint aHint,
|
|
const FocusMode aFocusMode) {
|
|
if (!aNewFocus) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
NS_ENSURE_STATE(mPresShell);
|
|
|
|
if (!IsValidSelectionPoint(aNewFocus)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mPresShell->FrameSelectionWillTakeFocus(*this);
|
|
|
|
// Clear all table selection data
|
|
mTableSelection.mMode = TableSelectionMode::None;
|
|
mTableSelection.mDragSelectingCells = false;
|
|
mTableSelection.mStartSelectedCell = nullptr;
|
|
mTableSelection.mEndSelectedCell = nullptr;
|
|
mTableSelection.mAppendStartSelectedCell = nullptr;
|
|
mCaret.mHint = aHint;
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER;
|
|
|
|
Maybe<Selection::AutoUserInitiated> userSelect;
|
|
if (IsUserSelectionReason()) {
|
|
userSelect.emplace(mDomSelections[index]);
|
|
}
|
|
|
|
// traverse through document and unselect crap here
|
|
switch (aFocusMode) {
|
|
case FocusMode::kCollapseToNewPoint:
|
|
[[fallthrough]];
|
|
case FocusMode::kMultiRangeSelection: {
|
|
// single click? setting cursor down
|
|
const Batching saveBatching =
|
|
mBatching; // hack to use the collapse code.
|
|
mBatching.mCounter = 1;
|
|
|
|
if (aFocusMode == FocusMode::kMultiRangeSelection) {
|
|
// Remove existing collapsed ranges as there's no point in having
|
|
// non-anchor/focus collapsed ranges.
|
|
mDomSelections[index]->RemoveCollapsedRanges();
|
|
|
|
ErrorResult error;
|
|
RefPtr<nsRange> newRange = nsRange::Create(
|
|
aNewFocus, aContentOffset, aNewFocus, aContentOffset, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
MOZ_ASSERT(newRange);
|
|
const RefPtr<Selection> selection{mDomSelections[index]};
|
|
selection->AddRangeAndSelectFramesAndNotifyListeners(*newRange,
|
|
IgnoreErrors());
|
|
mBatching = saveBatching;
|
|
} else {
|
|
bool oldDesiredPosSet =
|
|
mDesiredCaretPos.mIsSet; // need to keep old desired
|
|
// position if it was set.
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
selection->CollapseInLimiter(aNewFocus, aContentOffset);
|
|
mDesiredCaretPos.mIsSet =
|
|
oldDesiredPosSet; // now reset desired pos back.
|
|
mBatching = saveBatching;
|
|
}
|
|
if (aContentEndOffset != aContentOffset) {
|
|
mDomSelections[index]->Extend(aNewFocus, aContentEndOffset);
|
|
}
|
|
|
|
// find out if we are inside a table. if so, find out which one and which
|
|
// cell once we do that, the next time we get a takefocus, check the
|
|
// parent tree. if we are no longer inside same table ,cell then switch to
|
|
// table selection mode. BUT only do this in an editor
|
|
|
|
NS_ENSURE_STATE(mPresShell);
|
|
RefPtr<nsPresContext> context = mPresShell->GetPresContext();
|
|
mTableSelection.mClosestInclusiveTableCellAncestor = nullptr;
|
|
if (nsINode* inclusiveTableCellAncestor =
|
|
TableSelection::IsContentInActivelyEditableTableCell(context,
|
|
aNewFocus)) {
|
|
mTableSelection.mClosestInclusiveTableCellAncestor =
|
|
inclusiveTableCellAncestor;
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" * TakeFocus - Collapsing into new cell\n");
|
|
#endif
|
|
}
|
|
|
|
break;
|
|
}
|
|
case FocusMode::kExtendSelection: {
|
|
// Now update the range list:
|
|
int32_t offset;
|
|
nsINode* inclusiveTableCellAncestor =
|
|
GetClosestInclusiveTableCellAncestor(aNewFocus);
|
|
if (mTableSelection.mClosestInclusiveTableCellAncestor &&
|
|
inclusiveTableCellAncestor &&
|
|
inclusiveTableCellAncestor !=
|
|
mTableSelection
|
|
.mClosestInclusiveTableCellAncestor) // switch to cell
|
|
// selection mode
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" * TakeFocus - moving into new cell\n");
|
|
#endif
|
|
WidgetMouseEvent event(false, eVoidEvent, nullptr,
|
|
WidgetMouseEvent::eReal);
|
|
|
|
// Start selecting in the cell we were in before
|
|
nsINode* parent = ParentOffset(
|
|
mTableSelection.mClosestInclusiveTableCellAncestor, &offset);
|
|
if (parent) {
|
|
const nsresult result = HandleTableSelection(
|
|
parent, offset, TableSelectionMode::Cell, &event);
|
|
if (NS_WARN_IF(NS_FAILED(result))) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// Find the parent of this new cell and extend selection to it
|
|
parent = ParentOffset(inclusiveTableCellAncestor, &offset);
|
|
|
|
// XXXX We need to REALLY get the current key shift state
|
|
// (we'd need to add event listener -- let's not bother for now)
|
|
event.mModifiers &= ~MODIFIER_SHIFT; // aContinueSelection;
|
|
if (parent) {
|
|
mTableSelection.mClosestInclusiveTableCellAncestor =
|
|
inclusiveTableCellAncestor;
|
|
// Continue selection into next cell
|
|
const nsresult result = HandleTableSelection(
|
|
parent, offset, TableSelectionMode::Cell, &event);
|
|
if (NS_WARN_IF(NS_FAILED(result))) {
|
|
return result;
|
|
}
|
|
}
|
|
} else {
|
|
// XXXX Problem: Shift+click in browser is appending text selection to
|
|
// selected table!!!
|
|
// is this the place to erase seleced cells ?????
|
|
if (mDomSelections[index]->GetDirection() == eDirNext &&
|
|
aContentEndOffset > aContentOffset) // didn't go far enough
|
|
{
|
|
mDomSelections[index]->Extend(
|
|
aNewFocus, aContentEndOffset); // this will only redraw the diff
|
|
} else
|
|
mDomSelections[index]->Extend(aNewFocus, aContentOffset);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Don't notify selection listeners if batching is on:
|
|
if (IsBatching()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Be aware, the Selection instance may be destroyed after this call.
|
|
return NotifySelectionListeners(SelectionType::eNormal);
|
|
}
|
|
|
|
UniquePtr<SelectionDetails> nsFrameSelection::LookUpSelection(
|
|
nsIContent* aContent, int32_t aContentOffset, int32_t aContentLength,
|
|
bool aSlowCheck) const {
|
|
if (!aContent || !mPresShell) {
|
|
return nullptr;
|
|
}
|
|
|
|
UniquePtr<SelectionDetails> details;
|
|
|
|
for (size_t j = 0; j < ArrayLength(mDomSelections); j++) {
|
|
if (mDomSelections[j]) {
|
|
details = mDomSelections[j]->LookUpSelection(
|
|
aContent, aContentOffset, aContentLength, std::move(details),
|
|
kPresentSelectionTypes[j], aSlowCheck);
|
|
}
|
|
}
|
|
|
|
return details;
|
|
}
|
|
|
|
void nsFrameSelection::SetDragState(bool aState) {
|
|
if (mDragState == aState) return;
|
|
|
|
mDragState = aState;
|
|
|
|
if (!mDragState) {
|
|
mTableSelection.mDragSelectingCells = false;
|
|
// Notify that reason is mouse up.
|
|
SetChangeReasons(nsISelectionListener::MOUSEUP_REASON);
|
|
// Be aware, the Selection instance may be destroyed after this call.
|
|
NotifySelectionListeners(SelectionType::eNormal);
|
|
}
|
|
}
|
|
|
|
Selection* nsFrameSelection::GetSelection(SelectionType aSelectionType) const {
|
|
int8_t index = GetIndexFromSelectionType(aSelectionType);
|
|
if (index < 0) return nullptr;
|
|
|
|
return mDomSelections[index];
|
|
}
|
|
|
|
nsresult nsFrameSelection::ScrollSelectionIntoView(SelectionType aSelectionType,
|
|
SelectionRegion aRegion,
|
|
int16_t aFlags) const {
|
|
int8_t index = GetIndexFromSelectionType(aSelectionType);
|
|
if (index < 0) return NS_ERROR_INVALID_ARG;
|
|
|
|
if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER;
|
|
|
|
ScrollAxis verticalScroll = ScrollAxis();
|
|
int32_t flags = Selection::SCROLL_DO_FLUSH;
|
|
if (aFlags & nsISelectionController::SCROLL_SYNCHRONOUS) {
|
|
flags |= Selection::SCROLL_SYNCHRONOUS;
|
|
} else if (aFlags & nsISelectionController::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
flags |= Selection::SCROLL_FIRST_ANCESTOR_ONLY;
|
|
}
|
|
if (aFlags & nsISelectionController::SCROLL_OVERFLOW_HIDDEN) {
|
|
flags |= Selection::SCROLL_OVERFLOW_HIDDEN;
|
|
}
|
|
if (aFlags & nsISelectionController::SCROLL_CENTER_VERTICALLY) {
|
|
verticalScroll =
|
|
ScrollAxis(kScrollToCenter, WhenToScroll::IfNotFullyVisible);
|
|
}
|
|
if (aFlags & nsISelectionController::SCROLL_FOR_CARET_MOVE) {
|
|
flags |= Selection::SCROLL_FOR_CARET_MOVE;
|
|
}
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
RefPtr<Selection> sel = mDomSelections[index];
|
|
return sel->ScrollIntoView(aRegion, verticalScroll, ScrollAxis(), flags);
|
|
}
|
|
|
|
nsresult nsFrameSelection::RepaintSelection(SelectionType aSelectionType) {
|
|
int8_t index = GetIndexFromSelectionType(aSelectionType);
|
|
if (index < 0) return NS_ERROR_INVALID_ARG;
|
|
if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER;
|
|
NS_ENSURE_STATE(mPresShell);
|
|
|
|
// On macOS, update the selection cache to the new active selection
|
|
// aka the current selection.
|
|
#ifdef XP_MACOSX
|
|
// Check that we're in the an active window and, if this is Web content,
|
|
// in the frontmost tab.
|
|
Document* doc = mPresShell->GetDocument();
|
|
if (doc && IsInActiveTab(doc) && aSelectionType == SelectionType::eNormal) {
|
|
UpdateSelectionCacheOnRepaintSelection(mDomSelections[index]);
|
|
}
|
|
#endif
|
|
return mDomSelections[index]->Repaint(mPresShell->GetPresContext());
|
|
}
|
|
|
|
static bool IsDisplayContents(const nsIContent* aContent) {
|
|
return aContent->IsElement() && aContent->AsElement()->IsDisplayContents();
|
|
}
|
|
|
|
// static
|
|
nsIFrame* nsFrameSelection::GetFrameForNodeOffset(nsIContent* aNode,
|
|
int32_t aOffset,
|
|
CaretAssociateHint aHint,
|
|
int32_t* aReturnOffset) {
|
|
if (!aNode || !aReturnOffset) return nullptr;
|
|
|
|
if (aOffset < 0) return nullptr;
|
|
|
|
if (!aNode->GetPrimaryFrame() && !IsDisplayContents(aNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* returnFrame = nullptr;
|
|
nsCOMPtr<nsIContent> theNode;
|
|
|
|
while (true) {
|
|
*aReturnOffset = aOffset;
|
|
|
|
theNode = aNode;
|
|
|
|
if (aNode->IsElement()) {
|
|
int32_t childIndex = 0;
|
|
int32_t numChildren = theNode->GetChildCount();
|
|
|
|
if (aHint == CARET_ASSOCIATE_BEFORE) {
|
|
if (aOffset > 0) {
|
|
childIndex = aOffset - 1;
|
|
} else {
|
|
childIndex = aOffset;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aHint == CARET_ASSOCIATE_AFTER, "unknown direction");
|
|
if (aOffset >= numChildren) {
|
|
if (numChildren > 0) {
|
|
childIndex = numChildren - 1;
|
|
} else {
|
|
childIndex = 0;
|
|
}
|
|
} else {
|
|
childIndex = aOffset;
|
|
}
|
|
}
|
|
|
|
if (childIndex > 0 || numChildren > 0) {
|
|
nsCOMPtr<nsIContent> childNode =
|
|
theNode->GetChildAt_Deprecated(childIndex);
|
|
|
|
if (!childNode) {
|
|
break;
|
|
}
|
|
|
|
theNode = childNode;
|
|
}
|
|
|
|
// Now that we have the child node, check if it too
|
|
// can contain children. If so, descend into child.
|
|
if (theNode->IsElement() && theNode->GetChildCount() &&
|
|
!theNode->HasIndependentSelection()) {
|
|
aNode = theNode;
|
|
aOffset = aOffset > childIndex ? theNode->GetChildCount() : 0;
|
|
continue;
|
|
} else {
|
|
// Check to see if theNode is a text node. If it is, translate
|
|
// aOffset into an offset into the text node.
|
|
|
|
RefPtr<Text> textNode = theNode->GetAsText();
|
|
if (textNode) {
|
|
if (theNode->GetPrimaryFrame()) {
|
|
if (aOffset > childIndex) {
|
|
uint32_t textLength = textNode->Length();
|
|
|
|
*aReturnOffset = (int32_t)textLength;
|
|
} else {
|
|
*aReturnOffset = 0;
|
|
}
|
|
} else {
|
|
int32_t numChildren = aNode->GetChildCount();
|
|
int32_t newChildIndex = aHint == CARET_ASSOCIATE_BEFORE
|
|
? childIndex - 1
|
|
: childIndex + 1;
|
|
|
|
if (newChildIndex >= 0 && newChildIndex < numChildren) {
|
|
nsCOMPtr<nsIContent> newChildNode =
|
|
aNode->GetChildAt_Deprecated(newChildIndex);
|
|
if (!newChildNode) {
|
|
return nullptr;
|
|
}
|
|
|
|
aNode = newChildNode;
|
|
aOffset =
|
|
aHint == CARET_ASSOCIATE_BEFORE ? aNode->GetChildCount() : 0;
|
|
continue;
|
|
} else {
|
|
// newChildIndex is illegal which means we're at first or last
|
|
// child. Just use original node to get the frame.
|
|
theNode = aNode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the node is a ShadowRoot, the frame needs to be adjusted,
|
|
// because a ShadowRoot does not get a frame. Its children are rendered
|
|
// as children of the host.
|
|
if (ShadowRoot* shadow = ShadowRoot::FromNode(theNode)) {
|
|
theNode = shadow->GetHost();
|
|
}
|
|
|
|
returnFrame = theNode->GetPrimaryFrame();
|
|
if (!returnFrame) {
|
|
if (aHint == CARET_ASSOCIATE_BEFORE) {
|
|
if (aOffset > 0) {
|
|
--aOffset;
|
|
continue;
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
int32_t end = theNode->GetChildCount();
|
|
if (aOffset < end) {
|
|
++aOffset;
|
|
continue;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
} // end while
|
|
|
|
if (!returnFrame) return nullptr;
|
|
|
|
// If we ended up here and were asked to position the caret after a visible
|
|
// break, let's return the frame on the next line instead if it exists.
|
|
if (aOffset > 0 && (uint32_t)aOffset >= aNode->Length() &&
|
|
theNode == aNode->GetLastChild()) {
|
|
nsIFrame* newFrame;
|
|
nsLayoutUtils::IsInvisibleBreak(theNode, &newFrame);
|
|
if (newFrame) {
|
|
returnFrame = newFrame;
|
|
*aReturnOffset = 0;
|
|
}
|
|
}
|
|
|
|
// find the child frame containing the offset we want
|
|
returnFrame->GetChildFrameContainingOffset(
|
|
*aReturnOffset, aHint == CARET_ASSOCIATE_AFTER, &aOffset, &returnFrame);
|
|
return returnFrame;
|
|
}
|
|
|
|
nsIFrame* nsFrameSelection::GetFrameToPageSelect() const {
|
|
if (NS_WARN_IF(!mPresShell)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* rootFrameToSelect;
|
|
if (mLimiters.mLimiter) {
|
|
rootFrameToSelect = mLimiters.mLimiter->GetPrimaryFrame();
|
|
if (NS_WARN_IF(!rootFrameToSelect)) {
|
|
return nullptr;
|
|
}
|
|
} else if (mLimiters.mAncestorLimiter) {
|
|
rootFrameToSelect = mLimiters.mAncestorLimiter->GetPrimaryFrame();
|
|
if (NS_WARN_IF(!rootFrameToSelect)) {
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
rootFrameToSelect = mPresShell->GetRootScrollFrame();
|
|
if (NS_WARN_IF(!rootFrameToSelect)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> contentToSelect = mPresShell->GetContentForScrolling();
|
|
if (contentToSelect) {
|
|
// If there is selected content, look for nearest and vertical scrollable
|
|
// parent under the root frame.
|
|
for (nsIFrame* frame = contentToSelect->GetPrimaryFrame();
|
|
frame && frame != rootFrameToSelect; frame = frame->GetParent()) {
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(frame);
|
|
if (!scrollableFrame) {
|
|
continue;
|
|
}
|
|
ScrollStyles scrollStyles = scrollableFrame->GetScrollStyles();
|
|
if (scrollStyles.mVertical == StyleOverflow::Hidden) {
|
|
continue;
|
|
}
|
|
uint32_t directions = scrollableFrame->GetAvailableScrollingDirections();
|
|
if (directions & nsIScrollableFrame::VERTICAL) {
|
|
// If there is sub scrollable frame, let's use its page size to select.
|
|
return frame;
|
|
}
|
|
}
|
|
}
|
|
// Otherwise, i.e., there is no scrollable frame or only the root frame is
|
|
// scrollable, let's return the root frame because Shift + PageUp/PageDown
|
|
// should expand the selection in the root content even if it's not
|
|
// scrollable.
|
|
return rootFrameToSelect;
|
|
}
|
|
|
|
nsresult nsFrameSelection::PageMove(bool aForward, bool aExtend,
|
|
nsIFrame* aFrame,
|
|
SelectionIntoView aSelectionIntoView) {
|
|
MOZ_ASSERT(aFrame);
|
|
|
|
// expected behavior for PageMove is to scroll AND move the caret
|
|
// and remain relative position of the caret in view. see Bug 4302.
|
|
|
|
// Get the scrollable frame. If aFrame is not scrollable, this is nullptr.
|
|
nsIScrollableFrame* scrollableFrame = aFrame->GetScrollTargetFrame();
|
|
// Get the scrolled frame. If aFrame is not scrollable, this is aFrame
|
|
// itself.
|
|
nsIFrame* scrolledFrame =
|
|
scrollableFrame ? scrollableFrame->GetScrolledFrame() : aFrame;
|
|
if (!scrolledFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// find out where the caret is.
|
|
// we should know mDesiredCaretPos.mValue value of nsFrameSelection, but I
|
|
// havent seen that behavior in other windows applications yet.
|
|
RefPtr<Selection> selection = GetSelection(SelectionType::eNormal);
|
|
if (!selection) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsRect caretPos;
|
|
nsIFrame* caretFrame = nsCaret::GetGeometry(selection, &caretPos);
|
|
if (!caretFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If the scrolled frame is outside of current selection limiter,
|
|
// we need to scroll the frame but keep moving selection in the limiter.
|
|
nsIFrame* frameToClick = scrolledFrame;
|
|
if (!IsValidSelectionPoint(scrolledFrame->GetContent())) {
|
|
frameToClick = GetFrameToPageSelect();
|
|
if (NS_WARN_IF(!frameToClick)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (scrollableFrame) {
|
|
// If there is a scrollable frame, adjust pseudo-click position with page
|
|
// scroll amount.
|
|
// XXX This may scroll more than one page if ScrollSelectionIntoView is
|
|
// called later because caret may not fully visible. E.g., if
|
|
// clicking line will be visible only half height with scrolling
|
|
// the frame, ScrollSelectionIntoView additionally scrolls to show
|
|
// the caret entirely.
|
|
if (aForward) {
|
|
caretPos.y += scrollableFrame->GetPageScrollAmount().height;
|
|
} else {
|
|
caretPos.y -= scrollableFrame->GetPageScrollAmount().height;
|
|
}
|
|
} else {
|
|
// Otherwise, adjust pseudo-click position with the frame size.
|
|
if (aForward) {
|
|
caretPos.y += frameToClick->GetSize().height;
|
|
} else {
|
|
caretPos.y -= frameToClick->GetSize().height;
|
|
}
|
|
}
|
|
|
|
caretPos += caretFrame->GetOffsetTo(frameToClick);
|
|
|
|
// get a content at desired location
|
|
nsPoint desiredPoint;
|
|
desiredPoint.x = caretPos.x;
|
|
desiredPoint.y = caretPos.y + caretPos.height / 2;
|
|
nsIFrame::ContentOffsets offsets =
|
|
frameToClick->GetContentOffsetsFromPoint(desiredPoint);
|
|
|
|
if (!offsets.content) {
|
|
// XXX Do we need to handle ScrollSelectionIntoView in this case?
|
|
return NS_OK;
|
|
}
|
|
|
|
// First, place the caret.
|
|
bool selectionChanged;
|
|
{
|
|
// We don't want any script to run until we check whether selection is
|
|
// modified by HandleClick.
|
|
SelectionBatcher ensureNoSelectionChangeNotifications(selection);
|
|
|
|
RangeBoundary oldAnchor = selection->AnchorRef();
|
|
RangeBoundary oldFocus = selection->FocusRef();
|
|
|
|
const FocusMode focusMode =
|
|
aExtend ? FocusMode::kExtendSelection : FocusMode::kCollapseToNewPoint;
|
|
HandleClick(offsets.content, offsets.offset, offsets.offset, focusMode,
|
|
CARET_ASSOCIATE_AFTER);
|
|
|
|
selectionChanged = selection->AnchorRef() != oldAnchor ||
|
|
selection->FocusRef() != oldFocus;
|
|
}
|
|
|
|
bool doScrollSelectionIntoView = !(
|
|
aSelectionIntoView == SelectionIntoView::IfChanged && !selectionChanged);
|
|
|
|
// Then, scroll the given frame one page.
|
|
if (scrollableFrame) {
|
|
mozilla::Telemetry::Accumulate(
|
|
mozilla::Telemetry::SCROLL_INPUT_METHODS,
|
|
(uint32_t)ScrollInputMethod::MainThreadScrollPage);
|
|
|
|
// If we'll call ScrollSelectionIntoView later and selection wasn't
|
|
// changed and we scroll outside of selection limiter, we shouldn't use
|
|
// smooth scroll here because nsIScrollableFrame uses normal runnable,
|
|
// but ScrollSelectionIntoView uses early runner and it cancels the
|
|
// pending smooth scroll. Therefore, if we used smooth scroll in such
|
|
// case, ScrollSelectionIntoView would scroll to show caret instead of
|
|
// page scroll of an element outside selection limiter.
|
|
ScrollMode scrollMode = doScrollSelectionIntoView && !selectionChanged &&
|
|
scrolledFrame != frameToClick
|
|
? ScrollMode::Instant
|
|
: ScrollMode::Smooth;
|
|
scrollableFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
ScrollUnit::PAGES, scrollMode);
|
|
}
|
|
|
|
// Finally, scroll selection into view if requested.
|
|
if (!doScrollSelectionIntoView) {
|
|
return NS_OK;
|
|
}
|
|
return ScrollSelectionIntoView(
|
|
SelectionType::eNormal, nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS |
|
|
nsISelectionController::SCROLL_FOR_CARET_MOVE);
|
|
}
|
|
|
|
nsresult nsFrameSelection::PhysicalMove(int16_t aDirection, int16_t aAmount,
|
|
bool aExtend) {
|
|
NS_ENSURE_STATE(mPresShell);
|
|
// Flush out layout, since we need it to be up to date to do caret
|
|
// positioning.
|
|
OwningNonNull<PresShell> presShell(*mPresShell);
|
|
presShell->FlushPendingNotifications(FlushType::Layout);
|
|
|
|
if (!mPresShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Check that parameters are safe
|
|
if (aDirection < 0 || aDirection > 3 || aAmount < 0 || aAmount > 1) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPresContext* context = mPresShell->GetPresContext();
|
|
if (!context) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
RefPtr<Selection> sel = mDomSelections[index];
|
|
if (!sel) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
// Map the abstract movement amounts (0-1) to direction-specific
|
|
// selection units.
|
|
static const nsSelectionAmount inlineAmount[] = {eSelectCluster, eSelectWord};
|
|
static const nsSelectionAmount blockPrevAmount[] = {eSelectLine,
|
|
eSelectBeginLine};
|
|
static const nsSelectionAmount blockNextAmount[] = {eSelectLine,
|
|
eSelectEndLine};
|
|
|
|
struct PhysicalToLogicalMapping {
|
|
nsDirection direction;
|
|
const nsSelectionAmount* amounts;
|
|
};
|
|
static const PhysicalToLogicalMapping verticalLR[4] = {
|
|
{eDirPrevious, blockPrevAmount}, // left
|
|
{eDirNext, blockNextAmount}, // right
|
|
{eDirPrevious, inlineAmount}, // up
|
|
{eDirNext, inlineAmount} // down
|
|
};
|
|
static const PhysicalToLogicalMapping verticalRL[4] = {
|
|
{eDirNext, blockNextAmount},
|
|
{eDirPrevious, blockPrevAmount},
|
|
{eDirPrevious, inlineAmount},
|
|
{eDirNext, inlineAmount}};
|
|
static const PhysicalToLogicalMapping horizontal[4] = {
|
|
{eDirPrevious, inlineAmount},
|
|
{eDirNext, inlineAmount},
|
|
{eDirPrevious, blockPrevAmount},
|
|
{eDirNext, blockNextAmount}};
|
|
|
|
WritingMode wm;
|
|
nsIFrame* frame = sel->GetPrimaryFrameForFocusNode(true);
|
|
if (frame) {
|
|
if (!frame->Style()->IsTextCombined()) {
|
|
wm = frame->GetWritingMode();
|
|
} else {
|
|
// Using different direction for horizontal-in-vertical would
|
|
// make it hard to navigate via keyboard. Inherit the moving
|
|
// direction from its parent.
|
|
MOZ_ASSERT(frame->IsTextFrame());
|
|
wm = frame->GetParent()->GetWritingMode();
|
|
MOZ_ASSERT(wm.IsVertical(),
|
|
"Text combined "
|
|
"can only appear in vertical text");
|
|
}
|
|
}
|
|
|
|
const PhysicalToLogicalMapping& mapping =
|
|
wm.IsVertical()
|
|
? wm.IsVerticalLR() ? verticalLR[aDirection] : verticalRL[aDirection]
|
|
: horizontal[aDirection];
|
|
|
|
nsresult rv =
|
|
MoveCaret(mapping.direction, aExtend, mapping.amounts[aAmount], eVisual);
|
|
if (NS_FAILED(rv)) {
|
|
// If we tried to do a line move, but couldn't move in the given direction,
|
|
// then we'll "promote" this to a line-edge move instead.
|
|
if (mapping.amounts[aAmount] == eSelectLine) {
|
|
rv = MoveCaret(mapping.direction, aExtend, mapping.amounts[aAmount + 1],
|
|
eVisual);
|
|
}
|
|
// And if it was a next-word move that failed (which can happen when
|
|
// eat_space_to_next_word is true, see bug 1153237), then just move forward
|
|
// to the line-edge.
|
|
else if (mapping.amounts[aAmount] == eSelectWord &&
|
|
mapping.direction == eDirNext) {
|
|
rv = MoveCaret(eDirNext, aExtend, eSelectEndLine, eVisual);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsFrameSelection::CharacterMove(bool aForward, bool aExtend) {
|
|
return MoveCaret(aForward ? eDirNext : eDirPrevious, aExtend, eSelectCluster,
|
|
eUsePrefStyle);
|
|
}
|
|
|
|
nsresult nsFrameSelection::WordMove(bool aForward, bool aExtend) {
|
|
return MoveCaret(aForward ? eDirNext : eDirPrevious, aExtend, eSelectWord,
|
|
eUsePrefStyle);
|
|
}
|
|
|
|
nsresult nsFrameSelection::LineMove(bool aForward, bool aExtend) {
|
|
return MoveCaret(aForward ? eDirNext : eDirPrevious, aExtend, eSelectLine,
|
|
eUsePrefStyle);
|
|
}
|
|
|
|
nsresult nsFrameSelection::IntraLineMove(bool aForward, bool aExtend) {
|
|
if (aForward) {
|
|
return MoveCaret(eDirNext, aExtend, eSelectEndLine, eLogical);
|
|
} else {
|
|
return MoveCaret(eDirPrevious, aExtend, eSelectBeginLine, eLogical);
|
|
}
|
|
}
|
|
|
|
template <typename RangeType>
|
|
Result<RefPtr<RangeType>, nsresult>
|
|
nsFrameSelection::CreateRangeExtendedToSomewhere(
|
|
nsDirection aDirection, const nsSelectionAmount aAmount,
|
|
CaretMovementStyle aMovementStyle) {
|
|
MOZ_ASSERT(aDirection == eDirNext || aDirection == eDirPrevious);
|
|
MOZ_ASSERT(aAmount == eSelectCharacter || aAmount == eSelectCluster ||
|
|
aAmount == eSelectWord || aAmount == eSelectBeginLine ||
|
|
aAmount == eSelectEndLine);
|
|
MOZ_ASSERT(aMovementStyle == eLogical || aMovementStyle == eVisual ||
|
|
aMovementStyle == eUsePrefStyle);
|
|
|
|
if (!mPresShell) {
|
|
return Err(NS_ERROR_UNEXPECTED);
|
|
}
|
|
OwningNonNull<PresShell> presShell(*mPresShell);
|
|
presShell->FlushPendingNotifications(FlushType::Layout);
|
|
if (!mPresShell) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
Selection* selection =
|
|
mDomSelections[GetIndexFromSelectionType(SelectionType::eNormal)];
|
|
if (!selection || selection->RangeCount() != 1) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
RefPtr<const nsRange> firstRange = selection->GetRangeAt(0);
|
|
if (!firstRange || !firstRange->IsPositioned()) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
Result<nsPeekOffsetStruct, nsresult> result = PeekOffsetForCaretMove(
|
|
aDirection, true, aAmount, aMovementStyle, nsPoint(0, 0));
|
|
if (result.isErr()) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
const nsPeekOffsetStruct& pos = result.inspect();
|
|
RefPtr<RangeType> range;
|
|
if (NS_WARN_IF(!pos.mResultContent)) {
|
|
return range;
|
|
}
|
|
if (aDirection == eDirPrevious) {
|
|
range = RangeType::Create(
|
|
RawRangeBoundary(pos.mResultContent, pos.mContentOffset),
|
|
firstRange->EndRef(), IgnoreErrors());
|
|
} else {
|
|
range = RangeType::Create(
|
|
firstRange->StartRef(),
|
|
RawRangeBoundary(pos.mResultContent, pos.mContentOffset),
|
|
IgnoreErrors());
|
|
}
|
|
return range;
|
|
}
|
|
|
|
//////////END FRAMESELECTION
|
|
|
|
void nsFrameSelection::StartBatchChanges() { mBatching.mCounter++; }
|
|
|
|
void nsFrameSelection::EndBatchChanges(int16_t aReasons) {
|
|
MOZ_ASSERT(mBatching.mCounter > 0, "Bad mBatching.mCounter");
|
|
mBatching.mCounter--;
|
|
|
|
if (mBatching.mCounter == 0 && mBatching.mChangesDuringBatching) {
|
|
AddChangeReasons(aReasons);
|
|
mBatching.mChangesDuringBatching = false;
|
|
// Be aware, the Selection instance may be destroyed after this call.
|
|
NotifySelectionListeners(SelectionType::eNormal);
|
|
}
|
|
}
|
|
|
|
nsresult nsFrameSelection::NotifySelectionListeners(
|
|
SelectionType aSelectionType) {
|
|
int8_t index = GetIndexFromSelectionType(aSelectionType);
|
|
if (index >= 0 && mDomSelections[index]) {
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
return selection->NotifySelectionListeners();
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Start of Table Selection methods
|
|
|
|
static bool IsCell(nsIContent* aContent) {
|
|
return aContent->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th);
|
|
}
|
|
|
|
// static
|
|
nsITableCellLayout* nsFrameSelection::GetCellLayout(
|
|
const nsIContent* aCellContent) {
|
|
nsITableCellLayout* cellLayoutObject =
|
|
do_QueryFrame(aCellContent->GetPrimaryFrame());
|
|
return cellLayoutObject;
|
|
}
|
|
|
|
nsresult nsFrameSelection::ClearNormalSelection() {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER;
|
|
|
|
ErrorResult err;
|
|
mDomSelections[index]->RemoveAllRanges(err);
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
static nsIContent* GetFirstSelectedContent(const nsRange* aRange) {
|
|
if (!aRange) {
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(aRange->GetStartContainer(), "Must have start parent!");
|
|
MOZ_ASSERT(aRange->GetStartContainer()->IsElement(), "Unexpected parent");
|
|
|
|
return aRange->GetChildAtStartOffset();
|
|
}
|
|
|
|
// Table selection support.
|
|
// TODO: Separate table methods into a separate nsITableSelection interface
|
|
nsresult nsFrameSelection::HandleTableSelection(nsINode* aParentContent,
|
|
int32_t aContentOffset,
|
|
TableSelectionMode aTarget,
|
|
WidgetMouseEvent* aMouseEvent) {
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
if (!selection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return mTableSelection.HandleSelection(aParentContent, aContentOffset,
|
|
aTarget, aMouseEvent, mDragState,
|
|
*selection);
|
|
}
|
|
|
|
nsresult nsFrameSelection::TableSelection::HandleSelection(
|
|
nsINode* aParentContent, int32_t aContentOffset, TableSelectionMode aTarget,
|
|
WidgetMouseEvent* aMouseEvent, bool aDragState,
|
|
Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
NS_ENSURE_TRUE(aParentContent, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aMouseEvent, NS_ERROR_NULL_POINTER);
|
|
|
|
if (aDragState && mDragSelectingCells &&
|
|
aTarget == TableSelectionMode::Table) {
|
|
// We were selecting cells and user drags mouse in table border or inbetween
|
|
// cells,
|
|
// just do nothing
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsIContent> childContent =
|
|
aParentContent->GetChildAt_Deprecated(aContentOffset);
|
|
|
|
// When doing table selection, always set the direction to next so
|
|
// we can be sure that anchorNode's offset always points to the
|
|
// selected cell
|
|
aNormalSelection.SetDirection(eDirNext);
|
|
|
|
// Stack-class to wrap all table selection changes in
|
|
// BeginBatchChanges() / EndBatchChanges()
|
|
SelectionBatcher selectionBatcher(&aNormalSelection);
|
|
|
|
if (aDragState && mDragSelectingCells) {
|
|
return HandleDragSelecting(aTarget, childContent, aMouseEvent,
|
|
aNormalSelection);
|
|
}
|
|
|
|
return HandleMouseUpOrDown(aTarget, aDragState, childContent, aParentContent,
|
|
aContentOffset, aMouseEvent, aNormalSelection);
|
|
}
|
|
|
|
class nsFrameSelection::TableSelection::RowAndColumnRelation {
|
|
public:
|
|
static Result<RowAndColumnRelation, nsresult> Create(
|
|
const nsIContent* aFirst, const nsIContent* aSecond) {
|
|
RowAndColumnRelation result;
|
|
|
|
nsresult errorResult =
|
|
GetCellIndexes(aFirst, result.mFirst.mRow, result.mFirst.mColumn);
|
|
if (NS_FAILED(errorResult)) {
|
|
return Err(errorResult);
|
|
}
|
|
|
|
errorResult =
|
|
GetCellIndexes(aSecond, result.mSecond.mRow, result.mSecond.mColumn);
|
|
if (NS_FAILED(errorResult)) {
|
|
return Err(errorResult);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool IsSameColumn() const { return mFirst.mColumn == mSecond.mColumn; }
|
|
|
|
bool IsSameRow() const { return mFirst.mRow == mSecond.mRow; }
|
|
|
|
private:
|
|
RowAndColumnRelation() = default;
|
|
|
|
struct RowAndColumn {
|
|
int32_t mRow = 0;
|
|
int32_t mColumn = 0;
|
|
};
|
|
|
|
RowAndColumn mFirst;
|
|
RowAndColumn mSecond;
|
|
};
|
|
|
|
nsresult nsFrameSelection::TableSelection::HandleDragSelecting(
|
|
TableSelectionMode aTarget, nsIContent* aChildContent,
|
|
const WidgetMouseEvent* aMouseEvent, Selection& aNormalSelection) {
|
|
// We are drag-selecting
|
|
if (aTarget != TableSelectionMode::Table) {
|
|
// If dragging in the same cell as last event, do nothing
|
|
if (mEndSelectedCell == aChildContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
" mStartSelectedCell = %p, "
|
|
"mEndSelectedCell = %p, aChildContent = %p "
|
|
"\n",
|
|
mStartSelectedCell.get(), mEndSelectedCell.get(), aChildContent);
|
|
#endif
|
|
// aTarget can be any "cell mode",
|
|
// so we can easily drag-select rows and columns
|
|
// Once we are in row or column mode,
|
|
// we can drift into any cell to stay in that mode
|
|
// even if aTarget = TableSelectionMode::Cell
|
|
|
|
if (mMode == TableSelectionMode::Row ||
|
|
mMode == TableSelectionMode::Column) {
|
|
if (mEndSelectedCell) {
|
|
Result<RowAndColumnRelation, nsresult> rowAndColumnRelation =
|
|
RowAndColumnRelation::Create(mEndSelectedCell, aChildContent);
|
|
|
|
if (rowAndColumnRelation.isErr()) {
|
|
return rowAndColumnRelation.unwrapErr();
|
|
}
|
|
|
|
if ((mMode == TableSelectionMode::Row &&
|
|
rowAndColumnRelation.inspect().IsSameRow()) ||
|
|
(mMode == TableSelectionMode::Column &&
|
|
rowAndColumnRelation.inspect().IsSameColumn())) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" Dragged into a new column or row\n");
|
|
#endif
|
|
// Continue dragging row or column selection
|
|
|
|
return SelectRowOrColumn(aChildContent, aNormalSelection);
|
|
}
|
|
if (mMode == TableSelectionMode::Cell) {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Dragged into a new cell\n");
|
|
#endif
|
|
// Trick for quick selection of rows and columns
|
|
// Hold down shift, then start selecting in one direction
|
|
// If next cell dragged into is in same row, select entire row,
|
|
// if next cell is in same column, select entire column
|
|
if (mStartSelectedCell && aMouseEvent->IsShift()) {
|
|
Result<RowAndColumnRelation, nsresult> rowAndColumnRelation =
|
|
RowAndColumnRelation::Create(mStartSelectedCell, aChildContent);
|
|
if (rowAndColumnRelation.isErr()) {
|
|
return rowAndColumnRelation.unwrapErr();
|
|
}
|
|
|
|
if (rowAndColumnRelation.inspect().IsSameRow() ||
|
|
rowAndColumnRelation.inspect().IsSameColumn()) {
|
|
// Force new selection block
|
|
mStartSelectedCell = nullptr;
|
|
aNormalSelection.RemoveAllRanges(IgnoreErrors());
|
|
|
|
if (rowAndColumnRelation.inspect().IsSameRow()) {
|
|
mMode = TableSelectionMode::Row;
|
|
} else {
|
|
mMode = TableSelectionMode::Column;
|
|
}
|
|
|
|
return SelectRowOrColumn(aChildContent, aNormalSelection);
|
|
}
|
|
}
|
|
|
|
// Reselect block of cells to new end location
|
|
return SelectBlockOfCells(mStartSelectedCell, aChildContent,
|
|
aNormalSelection);
|
|
}
|
|
}
|
|
// Do nothing if dragging in table, but outside a cell
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFrameSelection::TableSelection::HandleMouseUpOrDown(
|
|
TableSelectionMode aTarget, bool aDragState, nsIContent* aChildContent,
|
|
nsINode* aParentContent, int32_t aContentOffset,
|
|
const WidgetMouseEvent* aMouseEvent, Selection& aNormalSelection) {
|
|
nsresult result = NS_OK;
|
|
// Not dragging -- mouse event is down or up
|
|
if (aDragState) {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Mouse down event\n");
|
|
#endif
|
|
// Clear cell we stored in mouse-down
|
|
mUnselectCellOnMouseUp = nullptr;
|
|
|
|
if (aTarget == TableSelectionMode::Cell) {
|
|
bool isSelected = false;
|
|
|
|
// Check if we have other selected cells
|
|
nsIContent* previousCellNode =
|
|
GetFirstSelectedContent(GetFirstCellRange(aNormalSelection));
|
|
if (previousCellNode) {
|
|
// We have at least 1 other selected cell
|
|
|
|
// Check if new cell is already selected
|
|
nsIFrame* cellFrame = aChildContent->GetPrimaryFrame();
|
|
if (!cellFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
isSelected = cellFrame->IsSelected();
|
|
} else {
|
|
// No cells selected -- remove non-cell selection
|
|
aNormalSelection.RemoveAllRanges(IgnoreErrors());
|
|
}
|
|
mDragSelectingCells = true; // Signal to start drag-cell-selection
|
|
mMode = aTarget;
|
|
// Set start for new drag-selection block (not appended)
|
|
mStartSelectedCell = aChildContent;
|
|
// The initial block end is same as the start
|
|
mEndSelectedCell = aChildContent;
|
|
|
|
if (isSelected) {
|
|
// Remember this cell to (possibly) unselect it on mouseup
|
|
mUnselectCellOnMouseUp = aChildContent;
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
"HandleTableSelection: Saving "
|
|
"mUnselectCellOnMouseUp\n");
|
|
#endif
|
|
} else {
|
|
// Select an unselected cell
|
|
// but first remove existing selection if not in same table
|
|
if (previousCellNode &&
|
|
!IsInSameTable(previousCellNode, aChildContent)) {
|
|
aNormalSelection.RemoveAllRanges(IgnoreErrors());
|
|
// Reset selection mode that is cleared in RemoveAllRanges
|
|
mMode = aTarget;
|
|
}
|
|
|
|
return ::SelectCellElement(aChildContent, aNormalSelection);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
if (aTarget == TableSelectionMode::Table) {
|
|
// TODO: We currently select entire table when clicked between cells,
|
|
// should we restrict to only around border?
|
|
// *** How do we get location data for cell and click?
|
|
mDragSelectingCells = false;
|
|
mStartSelectedCell = nullptr;
|
|
mEndSelectedCell = nullptr;
|
|
|
|
// Remove existing selection and select the table
|
|
aNormalSelection.RemoveAllRanges(IgnoreErrors());
|
|
return CreateAndAddRange(aParentContent, aContentOffset,
|
|
aNormalSelection);
|
|
}
|
|
if (aTarget == TableSelectionMode::Row ||
|
|
aTarget == TableSelectionMode::Column) {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("aTarget == %d\n", aTarget);
|
|
#endif
|
|
|
|
// Start drag-selecting mode so multiple rows/cols can be selected
|
|
// Note: Currently, nsIFrame::GetDataForTableSelection
|
|
// will never call us for row or column selection on mouse down
|
|
mDragSelectingCells = true;
|
|
|
|
// Force new selection block
|
|
mStartSelectedCell = nullptr;
|
|
aNormalSelection.RemoveAllRanges(IgnoreErrors());
|
|
// Always do this AFTER RemoveAllRanges
|
|
mMode = aTarget;
|
|
|
|
return SelectRowOrColumn(aChildContent, aNormalSelection);
|
|
}
|
|
} else {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
"HandleTableSelection: Mouse UP event. "
|
|
"mDragSelectingCells=%d, "
|
|
"mStartSelectedCell=%p\n",
|
|
mDragSelectingCells, mStartSelectedCell.get());
|
|
#endif
|
|
// First check if we are extending a block selection
|
|
uint32_t rangeCount = aNormalSelection.RangeCount();
|
|
|
|
if (rangeCount > 0 && aMouseEvent->IsShift() && mAppendStartSelectedCell &&
|
|
mAppendStartSelectedCell != aChildContent) {
|
|
// Shift key is down: append a block selection
|
|
mDragSelectingCells = false;
|
|
|
|
return SelectBlockOfCells(mAppendStartSelectedCell, aChildContent,
|
|
aNormalSelection);
|
|
}
|
|
|
|
if (mDragSelectingCells) {
|
|
mAppendStartSelectedCell = mStartSelectedCell;
|
|
}
|
|
|
|
mDragSelectingCells = false;
|
|
mStartSelectedCell = nullptr;
|
|
mEndSelectedCell = nullptr;
|
|
|
|
// Any other mouseup actions require that Ctrl or Cmd key is pressed
|
|
// else stop table selection mode
|
|
bool doMouseUpAction = false;
|
|
#ifdef XP_MACOSX
|
|
doMouseUpAction = aMouseEvent->IsMeta();
|
|
#else
|
|
doMouseUpAction = aMouseEvent->IsControl();
|
|
#endif
|
|
if (!doMouseUpAction) {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
"HandleTableSelection: Ending cell selection on mouseup: "
|
|
"mAppendStartSelectedCell=%p\n",
|
|
mAppendStartSelectedCell.get());
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
// Unselect a cell only if it wasn't
|
|
// just selected on mousedown
|
|
if (aChildContent == mUnselectCellOnMouseUp) {
|
|
// Scan ranges to find the cell to unselect (the selection range to
|
|
// remove)
|
|
// XXXbz it's really weird that this lives outside the loop, so once we
|
|
// find one we keep looking at it even if we find no more cells...
|
|
nsINode* previousCellParent = nullptr;
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
"HandleTableSelection: Unselecting "
|
|
"mUnselectCellOnMouseUp; "
|
|
"rangeCount=%d\n",
|
|
rangeCount);
|
|
#endif
|
|
for (uint32_t i = 0; i < rangeCount; i++) {
|
|
// Strong reference, because sometimes we want to remove
|
|
// this range, and then we might be the only owner.
|
|
RefPtr<nsRange> range = aNormalSelection.GetRangeAt(i);
|
|
if (!range) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsINode* container = range->GetStartContainer();
|
|
if (!container) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
int32_t offset = range->StartOffset();
|
|
// Be sure previous selection is a table cell
|
|
nsIContent* child = range->GetChildAtStartOffset();
|
|
if (child && IsCell(child)) {
|
|
previousCellParent = container;
|
|
}
|
|
|
|
// We're done if we didn't find parent of a previously-selected cell
|
|
if (!previousCellParent) {
|
|
break;
|
|
}
|
|
|
|
if (previousCellParent == aParentContent && offset == aContentOffset) {
|
|
// Cell is already selected
|
|
if (rangeCount == 1) {
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Unselecting single selected cell\n");
|
|
#endif
|
|
// This was the only cell selected.
|
|
// Collapse to "normal" selection inside the cell
|
|
mStartSelectedCell = nullptr;
|
|
mEndSelectedCell = nullptr;
|
|
mAppendStartSelectedCell = nullptr;
|
|
// TODO: We need a "Collapse to just before deepest child" routine
|
|
// Even better, should we collapse to just after the LAST deepest
|
|
// child
|
|
// (i.e., at the end of the cell's contents)?
|
|
return aNormalSelection.CollapseInLimiter(aChildContent, 0);
|
|
}
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(
|
|
"HandleTableSelection: Removing cell from multi-cell "
|
|
"selection\n");
|
|
#endif
|
|
// Unselecting the start of previous block
|
|
// XXX What do we use now!
|
|
if (aChildContent == mAppendStartSelectedCell) {
|
|
mAppendStartSelectedCell = nullptr;
|
|
}
|
|
|
|
// Deselect cell by removing its range from selection
|
|
ErrorResult err;
|
|
aNormalSelection.RemoveRangeAndUnselectFramesAndNotifyListeners(
|
|
*range, err);
|
|
return err.StealNSResult();
|
|
}
|
|
}
|
|
mUnselectCellOnMouseUp = nullptr;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsFrameSelection::TableSelection::SelectBlockOfCells(
|
|
nsIContent* aStartCell, nsIContent* aEndCell, Selection& aNormalSelection) {
|
|
NS_ENSURE_TRUE(aStartCell, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aEndCell, NS_ERROR_NULL_POINTER);
|
|
mEndSelectedCell = aEndCell;
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
// If new end cell is in a different table, do nothing
|
|
const RefPtr<const nsIContent> table = IsInSameTable(aStartCell, aEndCell);
|
|
if (!table) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get starting and ending cells' location in the cellmap
|
|
int32_t startRowIndex, startColIndex, endRowIndex, endColIndex;
|
|
result = GetCellIndexes(aStartCell, startRowIndex, startColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(aEndCell, endRowIndex, endColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (mDragSelectingCells) {
|
|
// Drag selecting: remove selected cells outside of new block limits
|
|
// TODO: `UnselectCells`'s return value shouldn't be ignored.
|
|
UnselectCells(table, startRowIndex, startColIndex, endRowIndex, endColIndex,
|
|
true, aNormalSelection);
|
|
}
|
|
|
|
// Note that we select block in the direction of user's mouse dragging,
|
|
// which means start cell may be after the end cell in either row or column
|
|
return AddCellsToSelection(table, startRowIndex, startColIndex, endRowIndex,
|
|
endColIndex, aNormalSelection);
|
|
}
|
|
|
|
nsresult nsFrameSelection::TableSelection::UnselectCells(
|
|
const nsIContent* aTableContent, int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex, int32_t aEndRowIndex, int32_t aEndColumnIndex,
|
|
bool aRemoveOutsideOfCellRange, mozilla::dom::Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
nsTableWrapperFrame* tableFrame =
|
|
do_QueryFrame(aTableContent->GetPrimaryFrame());
|
|
if (!tableFrame) return NS_ERROR_FAILURE;
|
|
|
|
int32_t minRowIndex = std::min(aStartRowIndex, aEndRowIndex);
|
|
int32_t maxRowIndex = std::max(aStartRowIndex, aEndRowIndex);
|
|
int32_t minColIndex = std::min(aStartColumnIndex, aEndColumnIndex);
|
|
int32_t maxColIndex = std::max(aStartColumnIndex, aEndColumnIndex);
|
|
|
|
// Strong reference because we sometimes remove the range
|
|
RefPtr<nsRange> range = GetFirstCellRange(aNormalSelection);
|
|
nsIContent* cellNode = GetFirstSelectedContent(range);
|
|
MOZ_ASSERT(!range || cellNode, "Must have cellNode if had a range");
|
|
|
|
int32_t curRowIndex, curColIndex;
|
|
while (cellNode) {
|
|
nsresult result = GetCellIndexes(cellNode, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
if (!range) printf("RemoveCellsToSelection -- range is null\n");
|
|
#endif
|
|
|
|
if (range) {
|
|
if (aRemoveOutsideOfCellRange) {
|
|
if (curRowIndex < minRowIndex || curRowIndex > maxRowIndex ||
|
|
curColIndex < minColIndex || curColIndex > maxColIndex) {
|
|
aNormalSelection.RemoveRangeAndUnselectFramesAndNotifyListeners(
|
|
*range, IgnoreErrors());
|
|
// Since we've removed the range, decrement pointer to next range
|
|
mSelectedCellIndex--;
|
|
}
|
|
|
|
} else {
|
|
// Remove cell from selection if it belongs to the given cells range or
|
|
// it is spanned onto the cells range.
|
|
nsTableCellFrame* cellFrame =
|
|
tableFrame->GetCellFrameAt(curRowIndex, curColIndex);
|
|
|
|
uint32_t origRowIndex = cellFrame->RowIndex();
|
|
uint32_t origColIndex = cellFrame->ColIndex();
|
|
uint32_t actualRowSpan =
|
|
tableFrame->GetEffectiveRowSpanAt(origRowIndex, origColIndex);
|
|
uint32_t actualColSpan =
|
|
tableFrame->GetEffectiveColSpanAt(curRowIndex, curColIndex);
|
|
if (origRowIndex <= static_cast<uint32_t>(maxRowIndex) &&
|
|
maxRowIndex >= 0 &&
|
|
origRowIndex + actualRowSpan - 1 >=
|
|
static_cast<uint32_t>(minRowIndex) &&
|
|
origColIndex <= static_cast<uint32_t>(maxColIndex) &&
|
|
maxColIndex >= 0 &&
|
|
origColIndex + actualColSpan - 1 >=
|
|
static_cast<uint32_t>(minColIndex)) {
|
|
aNormalSelection.RemoveRangeAndUnselectFramesAndNotifyListeners(
|
|
*range, IgnoreErrors());
|
|
// Since we've removed the range, decrement pointer to next range
|
|
mSelectedCellIndex--;
|
|
}
|
|
}
|
|
}
|
|
|
|
range = GetNextCellRange(aNormalSelection);
|
|
cellNode = GetFirstSelectedContent(range);
|
|
MOZ_ASSERT(!range || cellNode, "Must have cellNode if had a range");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult SelectCellElement(nsIContent* aCellElement,
|
|
Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
nsIContent* parent = aCellElement->GetParent();
|
|
|
|
// Get child offset
|
|
int32_t offset = parent->ComputeIndexOf(aCellElement);
|
|
|
|
return CreateAndAddRange(parent, offset, aNormalSelection);
|
|
}
|
|
|
|
static nsresult AddCellsToSelection(const nsIContent* aTableContent,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex,
|
|
Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
nsTableWrapperFrame* tableFrame =
|
|
do_QueryFrame(aTableContent->GetPrimaryFrame());
|
|
if (!tableFrame) { // Check that |table| is a table.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult result = NS_OK;
|
|
uint32_t row = aStartRowIndex;
|
|
while (true) {
|
|
uint32_t col = aStartColumnIndex;
|
|
while (true) {
|
|
nsTableCellFrame* cellFrame = tableFrame->GetCellFrameAt(row, col);
|
|
|
|
// Skip cells that are spanned from previous locations or are already
|
|
// selected
|
|
if (cellFrame) {
|
|
uint32_t origRow = cellFrame->RowIndex();
|
|
uint32_t origCol = cellFrame->ColIndex();
|
|
if (origRow == row && origCol == col && !cellFrame->IsSelected()) {
|
|
result = SelectCellElement(cellFrame->GetContent(), aNormalSelection);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
// Done when we reach end column
|
|
if (col == static_cast<uint32_t>(aEndColumnIndex)) {
|
|
break;
|
|
}
|
|
|
|
if (aStartColumnIndex < aEndColumnIndex) {
|
|
col++;
|
|
} else {
|
|
col--;
|
|
}
|
|
}
|
|
if (row == static_cast<uint32_t>(aEndRowIndex)) {
|
|
break;
|
|
}
|
|
|
|
if (aStartRowIndex < aEndRowIndex) {
|
|
row++;
|
|
} else {
|
|
row--;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsFrameSelection::RemoveCellsFromSelection(nsIContent* aTable,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex) {
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
const RefPtr<mozilla::dom::Selection> selection = mDomSelections[index];
|
|
if (!selection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return mTableSelection.UnselectCells(aTable, aStartRowIndex,
|
|
aStartColumnIndex, aEndRowIndex,
|
|
aEndColumnIndex, false, *selection);
|
|
}
|
|
|
|
nsresult nsFrameSelection::RestrictCellsToSelection(nsIContent* aTable,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex) {
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
const RefPtr<mozilla::dom::Selection> selection = mDomSelections[index];
|
|
if (!selection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return mTableSelection.UnselectCells(aTable, aStartRowIndex,
|
|
aStartColumnIndex, aEndRowIndex,
|
|
aEndColumnIndex, true, *selection);
|
|
}
|
|
|
|
Result<nsFrameSelection::TableSelection::FirstAndLastCell, nsresult>
|
|
nsFrameSelection::TableSelection::FindFirstAndLastCellOfRowOrColumn(
|
|
const nsIContent& aCellContent) const {
|
|
const nsIContent* table = GetParentTable(&aCellContent);
|
|
if (!table) {
|
|
return Err(NS_ERROR_NULL_POINTER);
|
|
}
|
|
|
|
// Get table and cell layout interfaces to access
|
|
// cell data based on cellmap location
|
|
// Frames are not ref counted, so don't use an nsCOMPtr
|
|
nsTableWrapperFrame* tableFrame = do_QueryFrame(table->GetPrimaryFrame());
|
|
if (!tableFrame) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
nsITableCellLayout* cellLayout = GetCellLayout(&aCellContent);
|
|
if (!cellLayout) {
|
|
return Err(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// Get location of target cell:
|
|
int32_t rowIndex, colIndex;
|
|
nsresult result = cellLayout->GetCellIndexes(rowIndex, colIndex);
|
|
if (NS_FAILED(result)) {
|
|
return Err(result);
|
|
}
|
|
|
|
// Be sure we start at proper beginning
|
|
// (This allows us to select row or col given ANY cell!)
|
|
if (mMode == TableSelectionMode::Row) {
|
|
colIndex = 0;
|
|
}
|
|
if (mMode == TableSelectionMode::Column) {
|
|
rowIndex = 0;
|
|
}
|
|
|
|
FirstAndLastCell firstAndLastCell;
|
|
while (true) {
|
|
// Loop through all cells in column or row to find first and last
|
|
nsCOMPtr<nsIContent> curCellContent =
|
|
tableFrame->GetCellAt(rowIndex, colIndex);
|
|
if (!curCellContent) {
|
|
break;
|
|
}
|
|
|
|
if (!firstAndLastCell.mFirst) {
|
|
firstAndLastCell.mFirst = curCellContent;
|
|
}
|
|
|
|
firstAndLastCell.mLast = std::move(curCellContent);
|
|
|
|
// Move to next cell in cellmap, skipping spanned locations
|
|
if (mMode == TableSelectionMode::Row) {
|
|
colIndex += tableFrame->GetEffectiveRowSpanAt(rowIndex, colIndex);
|
|
} else {
|
|
rowIndex += tableFrame->GetEffectiveRowSpanAt(rowIndex, colIndex);
|
|
}
|
|
}
|
|
return firstAndLastCell;
|
|
}
|
|
|
|
nsresult nsFrameSelection::TableSelection::SelectRowOrColumn(
|
|
nsIContent* aCellContent, Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
if (!aCellContent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
Result<FirstAndLastCell, nsresult> firstAndLastCell =
|
|
FindFirstAndLastCellOfRowOrColumn(*aCellContent);
|
|
if (firstAndLastCell.isErr()) {
|
|
return firstAndLastCell.unwrapErr();
|
|
}
|
|
|
|
// Use SelectBlockOfCells:
|
|
// This will replace existing selection,
|
|
// but allow unselecting by dragging out of selected region
|
|
if (firstAndLastCell.inspect().mFirst && firstAndLastCell.inspect().mLast) {
|
|
nsresult rv{NS_OK};
|
|
|
|
if (!mStartSelectedCell) {
|
|
// We are starting a new block, so select the first cell
|
|
rv = ::SelectCellElement(firstAndLastCell.inspect().mFirst,
|
|
aNormalSelection);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
mStartSelectedCell = firstAndLastCell.inspect().mFirst;
|
|
}
|
|
|
|
rv = SelectBlockOfCells(mStartSelectedCell,
|
|
firstAndLastCell.inspect().mLast, aNormalSelection);
|
|
|
|
// This gets set to the cell at end of row/col,
|
|
// but we need it to be the cell under cursor
|
|
mEndSelectedCell = aCellContent;
|
|
return rv;
|
|
}
|
|
|
|
#if 0
|
|
// This is a more efficient strategy that appends row to current selection,
|
|
// but doesn't allow dragging OFF of an existing selection to unselect!
|
|
do {
|
|
// Loop through all cells in column or row
|
|
result = tableLayout->GetCellDataAt(rowIndex, colIndex,
|
|
getter_AddRefs(cellElement),
|
|
curRowIndex, curColIndex,
|
|
rowSpan, colSpan,
|
|
actualRowSpan, actualColSpan,
|
|
isSelected);
|
|
if (NS_FAILED(result)) return result;
|
|
// We're done when cell is not found
|
|
if (!cellElement) break;
|
|
|
|
|
|
// Check spans else we infinitely loop
|
|
NS_ASSERTION(actualColSpan, "actualColSpan is 0!");
|
|
NS_ASSERTION(actualRowSpan, "actualRowSpan is 0!");
|
|
|
|
// Skip cells that are already selected or span from outside our region
|
|
if (!isSelected && rowIndex == curRowIndex && colIndex == curColIndex)
|
|
{
|
|
result = SelectCellElement(cellElement);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
// Move to next row or column in cellmap, skipping spanned locations
|
|
if (mMode == TableSelectionMode::Row)
|
|
colIndex += actualColSpan;
|
|
else
|
|
rowIndex += actualRowSpan;
|
|
}
|
|
while (cellElement);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsIContent* nsFrameSelection::GetFirstCellNodeInRange(const nsRange* aRange) {
|
|
if (!aRange) return nullptr;
|
|
|
|
nsIContent* childContent = aRange->GetChildAtStartOffset();
|
|
if (!childContent) return nullptr;
|
|
// Don't return node if not a cell
|
|
if (!IsCell(childContent)) return nullptr;
|
|
|
|
return childContent;
|
|
}
|
|
|
|
nsRange* nsFrameSelection::TableSelection::GetFirstCellRange(
|
|
const mozilla::dom::Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
nsRange* firstRange = aNormalSelection.GetRangeAt(0);
|
|
if (!GetFirstCellNodeInRange(firstRange)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Setup for next cell
|
|
mSelectedCellIndex = 1;
|
|
|
|
return firstRange;
|
|
}
|
|
|
|
nsRange* nsFrameSelection::TableSelection::GetNextCellRange(
|
|
const mozilla::dom::Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
nsRange* range = aNormalSelection.GetRangeAt(mSelectedCellIndex);
|
|
|
|
// Get first node in next range of selection - test if it's a cell
|
|
if (!GetFirstCellNodeInRange(range)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Setup for next cell
|
|
mSelectedCellIndex++;
|
|
|
|
return range;
|
|
}
|
|
|
|
// static
|
|
nsresult nsFrameSelection::GetCellIndexes(const nsIContent* aCell,
|
|
int32_t& aRowIndex,
|
|
int32_t& aColIndex) {
|
|
if (!aCell) return NS_ERROR_NULL_POINTER;
|
|
|
|
aColIndex = 0; // initialize out params
|
|
aRowIndex = 0;
|
|
|
|
nsITableCellLayout* cellLayoutObject = GetCellLayout(aCell);
|
|
if (!cellLayoutObject) return NS_ERROR_FAILURE;
|
|
return cellLayoutObject->GetCellIndexes(aRowIndex, aColIndex);
|
|
}
|
|
|
|
// static
|
|
nsIContent* nsFrameSelection::IsInSameTable(const nsIContent* aContent1,
|
|
const nsIContent* aContent2) {
|
|
if (!aContent1 || !aContent2) return nullptr;
|
|
|
|
nsIContent* tableNode1 = GetParentTable(aContent1);
|
|
nsIContent* tableNode2 = GetParentTable(aContent2);
|
|
|
|
// Must be in the same table. Note that we want to return false for
|
|
// the test if both tables are null.
|
|
return (tableNode1 == tableNode2) ? tableNode1 : nullptr;
|
|
}
|
|
|
|
// static
|
|
nsIContent* nsFrameSelection::GetParentTable(const nsIContent* aCell) {
|
|
if (!aCell) {
|
|
return nullptr;
|
|
}
|
|
|
|
for (nsIContent* parent = aCell->GetParent(); parent;
|
|
parent = parent->GetParent()) {
|
|
if (parent->IsHTMLElement(nsGkAtoms::table)) {
|
|
return parent;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
nsresult nsFrameSelection::SelectCellElement(nsIContent* aCellElement) {
|
|
const int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
const RefPtr<Selection> selection = mDomSelections[index];
|
|
if (!selection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return ::SelectCellElement(aCellElement, *selection);
|
|
}
|
|
|
|
nsresult CreateAndAddRange(nsINode* aContainer, int32_t aOffset,
|
|
Selection& aNormalSelection) {
|
|
MOZ_ASSERT(aNormalSelection.Type() == SelectionType::eNormal);
|
|
|
|
if (!aContainer) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
// Set range around child at given offset
|
|
ErrorResult error;
|
|
RefPtr<nsRange> range =
|
|
nsRange::Create(aContainer, aOffset, aContainer, aOffset + 1, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
MOZ_ASSERT(range);
|
|
|
|
ErrorResult err;
|
|
aNormalSelection.AddRangeAndSelectFramesAndNotifyListeners(*range, err);
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
// End of Table Selection
|
|
|
|
void nsFrameSelection::SetAncestorLimiter(nsIContent* aLimiter) {
|
|
if (mLimiters.mAncestorLimiter != aLimiter) {
|
|
mLimiters.mAncestorLimiter = aLimiter;
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index]) return;
|
|
|
|
if (!IsValidSelectionPoint(mDomSelections[index]->GetFocusNode())) {
|
|
ClearNormalSelection();
|
|
if (mLimiters.mAncestorLimiter) {
|
|
SetChangeReasons(nsISelectionListener::NO_REASON);
|
|
nsCOMPtr<nsIContent> limiter(mLimiters.mAncestorLimiter);
|
|
TakeFocus(limiter, 0, 0, CARET_ASSOCIATE_BEFORE,
|
|
FocusMode::kCollapseToNewPoint);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameSelection::SetDelayedCaretData(WidgetMouseEvent* aMouseEvent) {
|
|
if (aMouseEvent) {
|
|
mDelayedMouseEvent.mIsValid = true;
|
|
mDelayedMouseEvent.mIsShift = aMouseEvent->IsShift();
|
|
mDelayedMouseEvent.mClickCount = aMouseEvent->mClickCount;
|
|
} else {
|
|
mDelayedMouseEvent.mIsValid = false;
|
|
}
|
|
}
|
|
|
|
void nsFrameSelection::DisconnectFromPresShell() {
|
|
if (mAccessibleCaretEnabled) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
mDomSelections[index]->StopNotifyingAccessibleCaretEventHub();
|
|
}
|
|
|
|
StopAutoScrollTimer();
|
|
for (size_t i = 0; i < ArrayLength(mDomSelections); i++) {
|
|
mDomSelections[i]->Clear(nullptr);
|
|
}
|
|
mPresShell = nullptr;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
/**
|
|
* See Bug 1288453.
|
|
*
|
|
* Update the selection cache on repaint to handle when a pre-existing
|
|
* selection becomes active aka the current selection.
|
|
*
|
|
* 1. Change the current selection by click n dragging another selection.
|
|
* - Make a selection on content page. Make a selection in a text editor.
|
|
* - You can click n drag the content selection to make it active again.
|
|
* 2. Change the current selection when switching to a tab with a selection.
|
|
* - Make selection in tab.
|
|
* - Switching tabs will make its respective selection active.
|
|
*
|
|
* Therefore, we only update the selection cache on a repaint
|
|
* if the current selection being repainted is not an empty selection.
|
|
*
|
|
* If the current selection is empty. The current selection cache
|
|
* would be cleared by AutoCopyListener::OnSelectionChange().
|
|
*/
|
|
static nsresult UpdateSelectionCacheOnRepaintSelection(Selection* aSel) {
|
|
PresShell* presShell = aSel->GetPresShell();
|
|
if (!presShell) {
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<Document> aDoc = presShell->GetDocument();
|
|
|
|
if (aDoc && aSel && !aSel->IsCollapsed()) {
|
|
return nsCopySupport::EncodeDocumentWithContextAndPutToClipboard(
|
|
aSel, aDoc, nsIClipboard::kSelectionCache, false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif // XP_MACOSX
|
|
|
|
// mozilla::AutoCopyListener
|
|
|
|
int16_t AutoCopyListener::sClipboardID = -1;
|
|
|
|
/*
|
|
* What we do now:
|
|
* On every selection change, we copy to the clipboard anew, creating a
|
|
* HTML buffer, a transferable, an nsISupportsString and
|
|
* a huge mess every time. This is basically what
|
|
* nsCopySupport::EncodeDocumentWithContextAndPutToClipboard() does to move the
|
|
* selection into the clipboard for Edit->Copy.
|
|
*
|
|
* What we should do, to make our end of the deal faster:
|
|
* Create a singleton transferable with our own magic converter. When selection
|
|
* changes (use a quick cache to detect ``real'' changes), we put the new
|
|
* Selection in the transferable. Our magic converter will take care of
|
|
* transferable->whatever-other-format when the time comes to actually
|
|
* hand over the clipboard contents.
|
|
*
|
|
* Other issues:
|
|
* - which X clipboard should we populate?
|
|
* - should we use a different one than Edit->Copy, so that inadvertant
|
|
* selections (or simple clicks, which currently cause a selection
|
|
* notification, regardless of if they're in the document which currently has
|
|
* selection!) don't lose the contents of the ``application''? Or should we
|
|
* just put some intelligence in the ``is this a real selection?'' code to
|
|
* protect our selection against clicks in other documents that don't create
|
|
* selections?
|
|
* - maybe we should just never clear the X clipboard? That would make this
|
|
* problem just go away, which is very tempting.
|
|
*
|
|
* On macOS,
|
|
* nsIClipboard::kSelectionCache is the flag for current selection cache.
|
|
* Set the current selection cache on the parent process in
|
|
* widget cocoa nsClipboard whenever selection changes.
|
|
*/
|
|
|
|
// static
|
|
void AutoCopyListener::OnSelectionChange(Document* aDocument,
|
|
Selection& aSelection,
|
|
int16_t aReason) {
|
|
MOZ_ASSERT(IsValidClipboardID(sClipboardID));
|
|
|
|
if (sClipboardID == nsIClipboard::kSelectionCache) {
|
|
// Do nothing if this isn't in the active window and,
|
|
// in the case of Web content, in the frontmost tab.
|
|
if (!aDocument || !IsInActiveTab(aDocument)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
static const int16_t kResasonsToHandle =
|
|
nsISelectionListener::MOUSEUP_REASON |
|
|
nsISelectionListener::SELECTALL_REASON |
|
|
nsISelectionListener::KEYPRESS_REASON;
|
|
if (!(aReason & kResasonsToHandle)) {
|
|
return; // Don't care if we are still dragging.
|
|
}
|
|
|
|
if (!aDocument || aSelection.IsCollapsed()) {
|
|
#ifdef DEBUG_CLIPBOARD
|
|
fprintf(stderr, "CLIPBOARD: no selection/collapsed selection\n");
|
|
#endif
|
|
if (sClipboardID != nsIClipboard::kSelectionCache) {
|
|
// XXX Should we clear X clipboard?
|
|
return;
|
|
}
|
|
|
|
// If on macOS, clear the current selection transferable cached
|
|
// on the parent process (nsClipboard) when the selection is empty.
|
|
DebugOnly<nsresult> rv = nsCopySupport::ClearSelectionCache();
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"nsCopySupport::ClearSelectionCache() failed");
|
|
return;
|
|
}
|
|
|
|
DebugOnly<nsresult> rv =
|
|
nsCopySupport::EncodeDocumentWithContextAndPutToClipboard(
|
|
&aSelection, aDocument, sClipboardID, false);
|
|
NS_WARNING_ASSERTION(
|
|
NS_SUCCEEDED(rv),
|
|
"nsCopySupport::EncodeDocumentWithContextAndPutToClipboard() failed");
|
|
}
|