forked from mirrors/gecko-dev
6d8584507f
MozReview-Commit-ID: KARKdc8G0nI --HG-- extra : rebase_source : 1a5bc0fcb4ea607c46916df04199fda5161d64ab
6698 lines
203 KiB
C++
6698 lines
203 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=78: */
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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 selection: nsISelection,nsISelectionPrivate and nsFrameSelection
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*/
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#include "mozilla/dom/Selection.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/EventStates.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsFrameSelection.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 "nsIDOMNode.h"
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#include "nsRange.h"
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#include "nsCOMArray.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 "nsIContentIterator.h"
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#include "nsIDocumentEncoder.h"
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#include "nsTextFragment.h"
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#include <algorithm>
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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 "nsIDOMText.h"
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#include "nsContentUtils.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Preferences.h"
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#include "nsDOMClassInfoID.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsCaret.h"
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#include "AccessibleCaretEventHub.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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#include "nsITimer.h"
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#include "nsFrameManager.h"
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// notifications
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#include "nsIDOMDocument.h"
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#include "nsIDocument.h"
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#include "nsISelectionController.h"//for the enums
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#include "nsAutoCopyListener.h"
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#include "SelectionChangeListener.h"
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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 "nsIBidiKeyboard.h"
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#include "nsError.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/ShadowRoot.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 "nsViewManager.h"
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#include "nsIEditor.h"
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#include "nsIHTMLEditor.h"
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#include "nsFocusManager.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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static bool IsValidSelectionPoint(nsFrameSelection *aFrameSel, nsINode *aNode);
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static nsIAtom *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* GetCellParent(nsINode *aDomNode);
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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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* Utility methods defined in nsISelectionController.idl
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******************************************************************************/
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namespace mozilla {
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const char*
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ToChar(SelectionType aSelectionType)
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{
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switch (aSelectionType) {
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case SelectionType::eInvalid:
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return "SelectionType::eInvalid";
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case SelectionType::eNone:
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return "SelectionType::eNone";
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case SelectionType::eNormal:
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return "SelectionType::eNormal";
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case SelectionType::eSpellCheck:
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return "SelectionType::eSpellCheck";
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case SelectionType::eIMERawClause:
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return "SelectionType::eIMERawClause";
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case SelectionType::eIMESelectedRawClause:
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return "SelectionType::eIMESelectedRawClause";
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case SelectionType::eIMEConvertedClause:
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return "SelectionType::eIMEConvertedClause";
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case SelectionType::eIMESelectedClause:
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return "SelectionType::eIMESelectedClause";
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case SelectionType::eAccessibility:
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return "SelectionType::eAccessibility";
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case SelectionType::eFind:
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return "SelectionType::eFind";
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case SelectionType::eURLSecondary:
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return "SelectionType::eURLSecondary";
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case SelectionType::eURLStrikeout:
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return "SelectionType::eURLStrikeout";
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default:
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return "Invalid SelectionType";
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}
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}
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static bool
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IsValidSelectionType(RawSelectionType aRawSelectionType)
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{
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switch (static_cast<SelectionType>(aRawSelectionType)) {
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case SelectionType::eNone:
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case SelectionType::eNormal:
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case SelectionType::eSpellCheck:
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case SelectionType::eIMERawClause:
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case SelectionType::eIMESelectedRawClause:
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case SelectionType::eIMEConvertedClause:
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case SelectionType::eIMESelectedClause:
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case SelectionType::eAccessibility:
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case SelectionType::eFind:
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case SelectionType::eURLSecondary:
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case SelectionType::eURLStrikeout:
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return true;
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default:
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return false;
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}
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}
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SelectionType
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ToSelectionType(RawSelectionType aRawSelectionType)
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{
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if (!IsValidSelectionType(aRawSelectionType)) {
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return SelectionType::eInvalid;
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}
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return static_cast<SelectionType>(aRawSelectionType);
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}
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RawSelectionType
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ToRawSelectionType(SelectionType aSelectionType)
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{
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return static_cast<RawSelectionType>(aSelectionType);
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}
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bool operator &(SelectionType aSelectionType,
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RawSelectionType aRawSelectionTypes)
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{
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return (ToRawSelectionType(aSelectionType) & aRawSelectionTypes) != 0;
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}
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} // namespace mozilla
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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 extend.
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//#define DEBUG_NAVIGATION
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//#define DEBUG_TABLE_SELECTION 1
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nsPeekOffsetStruct::nsPeekOffsetStruct(nsSelectionAmount aAmount,
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nsDirection aDirection,
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int32_t aStartOffset,
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nsPoint aDesiredPos,
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bool aJumpLines,
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bool aScrollViewStop,
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bool aIsKeyboardSelect,
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bool aVisual,
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bool aExtend,
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EWordMovementType aWordMovementType)
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: mAmount(aAmount)
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, mDirection(aDirection)
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, mStartOffset(aStartOffset)
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, mDesiredPos(aDesiredPos)
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, mWordMovementType(aWordMovementType)
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, mJumpLines(aJumpLines)
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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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, 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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{
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}
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struct CachedOffsetForFrame {
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CachedOffsetForFrame()
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: mCachedFrameOffset(0, 0) // nsPoint ctor
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, mLastCaretFrame(nullptr)
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, mLastContentOffset(0)
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, mCanCacheFrameOffset(false)
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{}
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nsPoint mCachedFrameOffset; // cached frame offset
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nsIFrame* mLastCaretFrame; // store the frame the caret was last drawn in.
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int32_t mLastContentOffset; // store last content offset
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bool mCanCacheFrameOffset; // cached frame offset is valid?
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};
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class nsAutoScrollTimer final : public nsITimerCallback
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{
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public:
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NS_DECL_ISUPPORTS
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nsAutoScrollTimer()
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: mFrameSelection(0), mSelection(0), mPresContext(0), mPoint(0,0), mDelay(30)
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{
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}
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// aPoint is relative to aPresContext's root frame
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nsresult Start(nsPresContext *aPresContext, nsPoint &aPoint)
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{
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mPoint = aPoint;
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// Store the presentation context. The timer will be
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// stopped by the selection if the prescontext is destroyed.
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mPresContext = aPresContext;
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mContent = nsIPresShell::GetCapturingContent();
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if (!mTimer)
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{
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nsresult result;
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mTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
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if (NS_FAILED(result))
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return result;
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}
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return mTimer->InitWithCallback(this, mDelay, nsITimer::TYPE_ONE_SHOT);
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}
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nsresult Stop()
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{
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if (mTimer)
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{
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mTimer->Cancel();
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mTimer = 0;
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}
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mContent = nullptr;
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return NS_OK;
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}
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nsresult Init(nsFrameSelection* aFrameSelection, Selection* aSelection)
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{
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mFrameSelection = aFrameSelection;
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mSelection = aSelection;
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return NS_OK;
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}
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nsresult SetDelay(uint32_t aDelay)
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{
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mDelay = aDelay;
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return NS_OK;
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}
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NS_IMETHOD Notify(nsITimer *timer) override
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{
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if (mSelection && mPresContext)
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{
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nsWeakFrame frame =
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mContent ? mPresContext->GetPrimaryFrameFor(mContent) : nullptr;
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if (!frame)
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return NS_OK;
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mContent = nullptr;
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nsPoint pt = mPoint -
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frame->GetOffsetTo(mPresContext->PresShell()->FrameManager()->GetRootFrame());
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mFrameSelection->HandleDrag(frame, pt);
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if (!frame.IsAlive())
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return NS_OK;
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NS_ASSERTION(frame->PresContext() == mPresContext, "document mismatch?");
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mSelection->DoAutoScroll(frame, pt);
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}
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return NS_OK;
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}
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protected:
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virtual ~nsAutoScrollTimer()
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{
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if (mTimer) {
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mTimer->Cancel();
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}
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}
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private:
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nsFrameSelection *mFrameSelection;
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Selection* mSelection;
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nsPresContext *mPresContext;
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// relative to mPresContext's root frame
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nsPoint mPoint;
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nsCOMPtr<nsITimer> mTimer;
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nsCOMPtr<nsIContent> mContent;
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uint32_t mDelay;
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};
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NS_IMPL_ISUPPORTS(nsAutoScrollTimer, nsITimerCallback)
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nsresult NS_NewDomSelection(nsISelection **aDomSelection)
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{
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Selection* rlist = new Selection;
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*aDomSelection = (nsISelection *)rlist;
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NS_ADDREF(rlist);
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return NS_OK;
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}
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static int8_t
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GetIndexFromSelectionType(SelectionType aSelectionType)
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{
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switch (aSelectionType) {
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case SelectionType::eNormal:
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return 0;
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case SelectionType::eSpellCheck:
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return 1;
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case SelectionType::eIMERawClause:
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return 2;
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case SelectionType::eIMESelectedRawClause:
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return 3;
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case SelectionType::eIMEConvertedClause:
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return 4;
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case SelectionType::eIMESelectedClause:
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return 5;
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case SelectionType::eAccessibility:
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return 6;
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case SelectionType::eFind:
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return 7;
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case SelectionType::eURLSecondary:
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return 8;
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case SelectionType::eURLStrikeout:
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return 9;
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default:
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return -1;
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}
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/* NOTREACHED */
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}
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static SelectionType
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GetSelectionTypeFromIndex(int8_t aIndex)
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{
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static const SelectionType kSelectionTypes[] = {
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SelectionType::eNormal,
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SelectionType::eSpellCheck,
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SelectionType::eIMERawClause,
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SelectionType::eIMESelectedRawClause,
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SelectionType::eIMEConvertedClause,
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SelectionType::eIMESelectedClause,
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SelectionType::eAccessibility,
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SelectionType::eFind,
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SelectionType::eURLSecondary,
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SelectionType::eURLStrikeout
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};
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if (NS_WARN_IF(aIndex < 0) ||
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NS_WARN_IF(static_cast<size_t>(aIndex) >= ArrayLength(kSelectionTypes))) {
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return SelectionType::eNormal;
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}
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return kSelectionTypes[aIndex];
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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
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IsValidSelectionPoint(nsFrameSelection *aFrameSel, nsINode *aNode)
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{
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if (!aFrameSel || !aNode)
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return false;
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nsIContent *limiter = aFrameSel->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 bad
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return false; //not in the right content. tLimiter said so
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}
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limiter = aFrameSel->GetAncestorLimiter();
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return !limiter || nsContentUtils::ContentIsDescendantOf(aNode, limiter);
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}
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namespace mozilla {
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struct MOZ_RAII AutoPrepareFocusRange
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{
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AutoPrepareFocusRange(Selection* aSelection,
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bool aContinueSelection,
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bool aMultipleSelection
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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if (aSelection->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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bool userSelection = aSelection->mUserInitiated;
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nsTArray<RangeData>& ranges = aSelection->mRanges;
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if (!userSelection ||
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(!aContinueSelection && aMultipleSelection)) {
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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 (RangeData& 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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int16_t reason = aSelection->mFrameSelection->mSelectionChangeReason;
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bool isAnchorRelativeOp = (reason & (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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if (!isAnchorRelativeOp) {
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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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const size_t len = ranges.Length();
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size_t newAnchorFocusIndex = size_t(-1);
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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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newAnchorFocusIndex = i;
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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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newAnchorFocusIndex = i;
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break;
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}
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}
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}
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if (newAnchorFocusIndex == size_t(-1)) {
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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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nsRange* range = ranges[newAnchorFocusIndex].mRange;
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range->SetIsGenerated(false);
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aSelection->mAnchorFocusRange = range;
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// Remove all generated ranges (including the old mAnchorFocusRange).
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RefPtr<nsPresContext> presContext = aSelection->GetPresContext();
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size_t i = len;
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while (i--) {
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range = aSelection->mRanges[i].mRange;
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if (range->IsGenerated()) {
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range->SetSelection(nullptr);
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aSelection->selectFrames(presContext, range, false);
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aSelection->mRanges.RemoveElementAt(i);
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}
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}
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if (aSelection->mFrameSelection) {
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aSelection->mFrameSelection->InvalidateDesiredPos();
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}
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}
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Maybe<Selection::AutoUserInitiated> mUserSelect;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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} // namespace mozilla
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////////////BEGIN nsFrameSelection methods
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nsFrameSelection::nsFrameSelection()
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{
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for (size_t i = 0; i < kPresentSelectionTypeCount; i++){
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mDomSelections[i] = new Selection(this);
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mDomSelections[i]->SetType(GetSelectionTypeFromIndex(i));
|
|
}
|
|
mBatching = 0;
|
|
mChangesDuringBatching = false;
|
|
mNotifyFrames = true;
|
|
|
|
mMouseDoubleDownState = false;
|
|
|
|
mHint = CARET_ASSOCIATE_BEFORE;
|
|
mCaretBidiLevel = BIDI_LEVEL_UNDEFINED;
|
|
mKbdBidiLevel = NSBIDI_LTR;
|
|
|
|
mDragSelectingCells = false;
|
|
mSelectingTableCellMode = 0;
|
|
mSelectedCellIndex = 0;
|
|
|
|
nsAutoCopyListener *autoCopy = nullptr;
|
|
// On macOS, cache the current selection to send to osx service menu.
|
|
#ifdef XP_MACOSX
|
|
autoCopy = nsAutoCopyListener::GetInstance(nsIClipboard::kSelectionCache);
|
|
#endif
|
|
|
|
// Check to see if the autocopy pref is enabled
|
|
// and add the autocopy listener if it is
|
|
if (Preferences::GetBool("clipboard.autocopy")) {
|
|
autoCopy = nsAutoCopyListener::GetInstance(nsIClipboard::kSelectionClipboard);
|
|
}
|
|
|
|
if (autoCopy) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (mDomSelections[index]) {
|
|
autoCopy->Listen(mDomSelections[index]);
|
|
}
|
|
}
|
|
|
|
mDisplaySelection = nsISelectionController::SELECTION_OFF;
|
|
mSelectionChangeReason = nsISelectionListener::NO_REASON;
|
|
|
|
mDelayedMouseEventValid = false;
|
|
// These values are not used since they are only valid when
|
|
// mDelayedMouseEventValid is true, and setting mDelayedMouseEventValid
|
|
//alwaysoverrides these values.
|
|
mDelayedMouseEventIsShift = false;
|
|
mDelayedMouseEventClickCount = 0;
|
|
}
|
|
|
|
nsFrameSelection::~nsFrameSelection()
|
|
{
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(nsFrameSelection)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsFrameSelection)
|
|
for (size_t i = 0; i < kPresentSelectionTypeCount; ++i) {
|
|
tmp->mDomSelections[i] = nullptr;
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCellParent)
|
|
tmp->mSelectingTableCellMode = 0;
|
|
tmp->mDragSelectingCells = false;
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mEndSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mAppendStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mUnselectCellOnMouseUp)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mMaintainRange)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLimiter)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mAncestorLimiter)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFrameSelection)
|
|
if (tmp->mShell && tmp->mShell->GetDocument() &&
|
|
nsCCUncollectableMarker::InGeneration(cb,
|
|
tmp->mShell->GetDocument()->
|
|
GetMarkedCCGeneration())) {
|
|
return NS_SUCCESS_INTERRUPTED_TRAVERSE;
|
|
}
|
|
for (size_t i = 0; i < kPresentSelectionTypeCount; ++i) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDomSelections[i])
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCellParent)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEndSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAppendStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mUnselectCellOnMouseUp)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMaintainRange)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLimiter)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAncestorLimiter)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(nsFrameSelection, AddRef)
|
|
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(nsFrameSelection, Release)
|
|
|
|
// Get the x (or y, in vertical writing mode) position requested
|
|
// by the Key Handling for line-up/down
|
|
nsresult
|
|
nsFrameSelection::FetchDesiredPos(nsPoint &aDesiredPos)
|
|
{
|
|
if (!mShell) {
|
|
NS_ERROR("fetch desired position failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (mDesiredPosSet) {
|
|
aDesiredPos = mDesiredPos;
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsCaret> caret = mShell->GetCaret();
|
|
if (!caret) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
caret->SetSelection(mDomSelections[index]);
|
|
|
|
nsRect coord;
|
|
nsIFrame* caretFrame = caret->GetGeometry(&coord);
|
|
if (!caretFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsPoint viewOffset(0, 0);
|
|
nsView* view = nullptr;
|
|
caretFrame->GetOffsetFromView(viewOffset, &view);
|
|
if (view) {
|
|
coord += viewOffset;
|
|
}
|
|
aDesiredPos = coord.TopLeft();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::InvalidateDesiredPos() // do not listen to mDesiredPos;
|
|
// you must get another.
|
|
{
|
|
mDesiredPosSet = false;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::SetDesiredPos(nsPoint aPos)
|
|
{
|
|
mDesiredPos = aPos;
|
|
mDesiredPosSet = true;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::ConstrainFrameAndPointToAnchorSubtree(nsIFrame *aFrame,
|
|
nsPoint& aPoint,
|
|
nsIFrame **aRetFrame,
|
|
nsPoint& aRetPoint)
|
|
{
|
|
//
|
|
// 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!
|
|
//
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIDOMNode> anchorNode;
|
|
int32_t anchorOffset = 0;
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
result = mDomSelections[index]->GetAnchorNode(getter_AddRefs(anchorNode));
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!anchorNode)
|
|
return NS_OK;
|
|
|
|
result = mDomSelections[index]->GetAnchorOffset(&anchorOffset);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
nsCOMPtr<nsIContent> anchorContent = do_QueryInterface(anchorNode);
|
|
|
|
if (!anchorContent)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//
|
|
// Now find the root of the subtree containing the anchor's content.
|
|
//
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
nsIContent* anchorRoot = anchorContent->GetSelectionRootContent(mShell);
|
|
NS_ENSURE_TRUE(anchorRoot, NS_ERROR_UNEXPECTED);
|
|
|
|
//
|
|
// Now find the root of the subtree containing aFrame's content.
|
|
//
|
|
|
|
nsIContent* content = aFrame->GetContent();
|
|
|
|
if (content)
|
|
{
|
|
nsIContent* contentRoot = content->GetSelectionRootContent(mShell);
|
|
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 = nsIPresShell::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 = mShell->FrameManager()->GetRootFrame();
|
|
nsPoint ptInRoot = aPoint + aFrame->GetOffsetTo(rootFrame);
|
|
nsIFrame* cursorFrame =
|
|
nsLayoutUtils::GetFrameForPoint(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->PresContext()->PresShell() == mShell)
|
|
{
|
|
nsIContent* cursorContent = cursorFrame->GetContent();
|
|
NS_ENSURE_TRUE(cursorContent, NS_ERROR_FAILURE);
|
|
nsIContent* cursorContentRoot =
|
|
cursorContent->GetSelectionRootContent(mShell);
|
|
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::SetCaretBidiLevel(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
|
|
mCaretBidiLevel = aLevel;
|
|
|
|
RefPtr<nsCaret> caret;
|
|
if (mShell && (caret = mShell->GetCaret())) {
|
|
caret->SchedulePaint();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
nsBidiLevel
|
|
nsFrameSelection::GetCaretBidiLevel() const
|
|
{
|
|
return mCaretBidiLevel;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::UndefineCaretBidiLevel()
|
|
{
|
|
mCaretBidiLevel |= BIDI_LEVEL_UNDEFINED;
|
|
}
|
|
|
|
#ifdef PRINT_RANGE
|
|
void printRange(nsRange *aDomRange)
|
|
{
|
|
if (!aDomRange)
|
|
{
|
|
printf("NULL nsIDOMRange\n");
|
|
}
|
|
nsINode* startNode = aDomRange->GetStartParent();
|
|
nsINode* endNode = aDomRange->GetEndParent();
|
|
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
|
|
nsIAtom *GetTag(nsINode *aNode)
|
|
{
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
if (!content)
|
|
{
|
|
NS_NOTREACHED("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->IndexOf(aNode);
|
|
|
|
return parent;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static nsINode*
|
|
GetCellParent(nsINode *aDomNode)
|
|
{
|
|
if (!aDomNode)
|
|
return nullptr;
|
|
nsINode* current = aDomNode;
|
|
// Start with current node and look for a table cell
|
|
while (current)
|
|
{
|
|
nsIAtom* tag = GetTag(current);
|
|
if (tag == nsGkAtoms::td || tag == nsGkAtoms::th)
|
|
return current;
|
|
current = current->GetParent();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::Init(nsIPresShell *aShell, nsIContent *aLimiter)
|
|
{
|
|
mShell = aShell;
|
|
mDragState = false;
|
|
mDesiredPosSet = false;
|
|
mLimiter = aLimiter;
|
|
mCaretMovementStyle =
|
|
Preferences::GetInt("bidi.edit.caret_movement_style", 2);
|
|
|
|
// This should only ever be initialized on the main thread, so we are OK here.
|
|
static bool prefCachesInitialized = false;
|
|
if (!prefCachesInitialized) {
|
|
prefCachesInitialized = true;
|
|
|
|
Preferences::AddBoolVarCache(&sSelectionEventsEnabled,
|
|
"dom.select_events.enabled", false);
|
|
}
|
|
|
|
RefPtr<AccessibleCaretEventHub> eventHub = mShell->GetAccessibleCaretEventHub();
|
|
if (eventHub) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (mDomSelections[index]) {
|
|
mDomSelections[index]->AddSelectionListener(eventHub);
|
|
}
|
|
}
|
|
|
|
if (sSelectionEventsEnabled) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (mDomSelections[index]) {
|
|
// The Selection instance will hold a strong reference to its selectionchangelistener
|
|
// so we don't have to worry about that!
|
|
RefPtr<SelectionChangeListener> listener = new SelectionChangeListener;
|
|
mDomSelections[index]->AddSelectionListener(listener);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsFrameSelection::sSelectionEventsEnabled = false;
|
|
|
|
nsresult
|
|
nsFrameSelection::MoveCaret(nsDirection aDirection,
|
|
bool aContinueSelection,
|
|
nsSelectionAmount aAmount,
|
|
CaretMovementStyle aMovementStyle)
|
|
{
|
|
bool visualMovement = aMovementStyle == eVisual ||
|
|
(aMovementStyle == eUsePrefStyle &&
|
|
(mCaretMovementStyle == 1 ||
|
|
(mCaretMovementStyle == 2 && !aContinueSelection)));
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
// Flush out layout, since we need it to be up to date to do caret
|
|
// positioning.
|
|
mShell->FlushPendingNotifications(Flush_Layout);
|
|
|
|
if (!mShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext *context = mShell->GetPresContext();
|
|
if (!context)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
bool isCollapsed;
|
|
nsPoint desiredPos(0, 0); //we must keep this around and revalidate it when its just UP/DOWN
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
RefPtr<Selection> sel = mDomSelections[index];
|
|
if (!sel)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
int32_t scrollFlags = Selection::SCROLL_FOR_CARET_MOVE;
|
|
nsINode* focusNode = sel->GetFocusNode();
|
|
if (focusNode &&
|
|
(focusNode->IsEditable() ||
|
|
(focusNode->IsElement() &&
|
|
focusNode->AsElement()->State().
|
|
HasState(NS_EVENT_STATE_MOZ_READWRITE)))) {
|
|
// If caret moves in editor, it should cause scrolling even if it's in
|
|
// overflow: hidden;.
|
|
scrollFlags |= Selection::SCROLL_OVERFLOW_HIDDEN;
|
|
}
|
|
|
|
nsresult result = sel->GetIsCollapsed(&isCollapsed);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
|
|
int32_t caretStyle = Preferences::GetInt("layout.selection.caret_style", 0);
|
|
if (caretStyle == 0
|
|
#ifdef XP_WIN
|
|
&& aAmount != eSelectLine
|
|
#endif
|
|
) {
|
|
// Put caret at the selection edge in the |aDirection| direction.
|
|
caretStyle = 2;
|
|
}
|
|
|
|
bool doCollapse = !isCollapsed && !aContinueSelection && caretStyle == 2 &&
|
|
aAmount <= eSelectLine;
|
|
if (doCollapse) {
|
|
if (aDirection == eDirPrevious) {
|
|
PostReason(nsISelectionListener::COLLAPSETOSTART_REASON);
|
|
mHint = CARET_ASSOCIATE_AFTER;
|
|
} else {
|
|
PostReason(nsISelectionListener::COLLAPSETOEND_REASON);
|
|
mHint = CARET_ASSOCIATE_BEFORE;
|
|
}
|
|
} else {
|
|
PostReason(nsISelectionListener::KEYPRESS_REASON);
|
|
}
|
|
|
|
AutoPrepareFocusRange prep(sel, aContinueSelection, false);
|
|
|
|
if (aAmount == eSelectLine) {
|
|
result = FetchDesiredPos(desiredPos);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
SetDesiredPos(desiredPos);
|
|
}
|
|
|
|
if (doCollapse) {
|
|
const nsRange* anchorFocusRange = sel->GetAnchorFocusRange();
|
|
if (anchorFocusRange) {
|
|
nsINode* node;
|
|
int32_t offset;
|
|
if (aDirection == eDirPrevious) {
|
|
node = anchorFocusRange->GetStartParent();
|
|
offset = anchorFocusRange->StartOffset();
|
|
} else {
|
|
node = anchorFocusRange->GetEndParent();
|
|
offset = anchorFocusRange->EndOffset();
|
|
}
|
|
sel->Collapse(node, offset);
|
|
}
|
|
sel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsIPresShell::ScrollAxis(),
|
|
nsIPresShell::ScrollAxis(), scrollFlags);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame *frame;
|
|
int32_t offsetused = 0;
|
|
result = sel->GetPrimaryFrameForFocusNode(&frame, &offsetused,
|
|
visualMovement);
|
|
|
|
if (NS_FAILED(result) || !frame)
|
|
return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
|
|
|
|
//set data using 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, eDirPrevious, offsetused, desiredPos,
|
|
true, mLimiter != nullptr, true, visualMovement,
|
|
aContinueSelection);
|
|
|
|
nsBidiDirection paraDir = nsBidiPresUtils::ParagraphDirection(frame);
|
|
|
|
CaretAssociateHint tHint(mHint); //temporary variable so we dont set mHint until it is necessary
|
|
switch (aAmount){
|
|
case eSelectCharacter:
|
|
case eSelectCluster:
|
|
case eSelectWord:
|
|
case eSelectWordNoSpace:
|
|
InvalidateDesiredPos();
|
|
pos.mAmount = aAmount;
|
|
pos.mDirection = (visualMovement && paraDir == NSBIDI_RTL)
|
|
? nsDirection(1 - aDirection) : aDirection;
|
|
break;
|
|
case eSelectLine:
|
|
pos.mAmount = aAmount;
|
|
pos.mDirection = aDirection;
|
|
break;
|
|
case eSelectBeginLine:
|
|
case eSelectEndLine:
|
|
InvalidateDesiredPos();
|
|
pos.mAmount = aAmount;
|
|
pos.mDirection = (visualMovement && paraDir == NSBIDI_RTL)
|
|
? nsDirection(1 - aDirection) : aDirection;
|
|
break;
|
|
default:
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result = frame->PeekOffset(&pos)) && pos.mResultContent)
|
|
{
|
|
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 = nsBidi::GetBidiData(theFrame);
|
|
SetCaretBidiLevel(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) {
|
|
SetCaretBidiLevel(nsBidi::GetEmbeddingLevel(theFrame));
|
|
}
|
|
else {
|
|
BidiLevelFromMove(mShell, pos.mResultContent, pos.mContentOffset,
|
|
aAmount, tHint);
|
|
}
|
|
}
|
|
}
|
|
result = TakeFocus(pos.mResultContent, pos.mContentOffset, pos.mContentOffset,
|
|
tHint, aContinueSelection, false);
|
|
} else if (aAmount <= eSelectWordNoSpace && aDirection == 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->GetType() == nsGkAtoms::brFrame;
|
|
sel->Collapse(sel->GetFocusNode(), sel->FocusOffset());
|
|
// Note: 'frame' might be dead here.
|
|
if (!isBRFrame) {
|
|
mHint = CARET_ASSOCIATE_BEFORE; // We're now at the end of the frame to the left.
|
|
}
|
|
result = NS_OK;
|
|
}
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = mDomSelections[index]->
|
|
ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsIPresShell::ScrollAxis(), nsIPresShell::ScrollAxis(),
|
|
scrollFlags);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//END nsFrameSelection methods
|
|
|
|
|
|
//BEGIN nsFrameSelection methods
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ToString(nsAString& aReturn)
|
|
{
|
|
// We need Flush_Style here to make sure frames have been created for
|
|
// the selected content. Use mFrameSelection->GetShell() which returns
|
|
// null if the Selection has been disconnected (the shell is Destroyed).
|
|
nsCOMPtr<nsIPresShell> shell =
|
|
mFrameSelection ? mFrameSelection->GetShell() : nullptr;
|
|
if (!shell) {
|
|
aReturn.Truncate();
|
|
return NS_OK;
|
|
}
|
|
shell->FlushPendingNotifications(Flush_Style);
|
|
|
|
return ToStringWithFormat("text/plain",
|
|
nsIDocumentEncoder::SkipInvisibleContent,
|
|
0, aReturn);
|
|
}
|
|
|
|
void
|
|
Selection::Stringify(nsAString& aResult)
|
|
{
|
|
// Eat the error code
|
|
ToString(aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ToStringWithFormat(const char* aFormatType, uint32_t aFlags,
|
|
int32_t aWrapCol, nsAString& aReturn)
|
|
{
|
|
ErrorResult result;
|
|
NS_ConvertUTF8toUTF16 format(aFormatType);
|
|
ToStringWithFormat(format, aFlags, aWrapCol, aReturn, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::ToStringWithFormat(const nsAString& aFormatType, uint32_t aFlags,
|
|
int32_t aWrapCol, nsAString& aReturn,
|
|
ErrorResult& aRv)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_ConvertUTF8toUTF16 formatType( NS_DOC_ENCODER_CONTRACTID_BASE );
|
|
formatType.Append(aFormatType);
|
|
nsCOMPtr<nsIDocumentEncoder> encoder =
|
|
do_CreateInstance(NS_ConvertUTF16toUTF8(formatType).get(), &rv);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
nsIPresShell* shell = GetPresShell();
|
|
if (!shell) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
nsIDocument *doc = shell->GetDocument();
|
|
|
|
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(doc);
|
|
NS_ASSERTION(domDoc, "Need a document");
|
|
|
|
// Flags should always include OutputSelectionOnly if we're coming from here:
|
|
aFlags |= nsIDocumentEncoder::OutputSelectionOnly;
|
|
nsAutoString readstring;
|
|
readstring.Assign(aFormatType);
|
|
rv = encoder->Init(domDoc, readstring, aFlags);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
encoder->SetSelection(this);
|
|
if (aWrapCol != 0)
|
|
encoder->SetWrapColumn(aWrapCol);
|
|
|
|
rv = encoder->EncodeToString(aReturn);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::SetInterlinePosition(bool aHintRight)
|
|
{
|
|
ErrorResult result;
|
|
SetInterlinePosition(aHintRight, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::SetInterlinePosition(bool aHintRight, ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED); // Can't do selection
|
|
return;
|
|
}
|
|
mFrameSelection->SetHint(aHintRight ? CARET_ASSOCIATE_AFTER : CARET_ASSOCIATE_BEFORE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetInterlinePosition(bool* aHintRight)
|
|
{
|
|
ErrorResult result;
|
|
*aHintRight = GetInterlinePosition(result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
Selection::GetInterlinePosition(ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED); // Can't do selection
|
|
return false;
|
|
}
|
|
return mFrameSelection->GetHint() == CARET_ASSOCIATE_AFTER;
|
|
}
|
|
|
|
Nullable<int16_t>
|
|
Selection::GetCaretBidiLevel(mozilla::ErrorResult& aRv) const
|
|
{
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED);
|
|
return Nullable<int16_t>();
|
|
}
|
|
nsBidiLevel caretBidiLevel = mFrameSelection->GetCaretBidiLevel();
|
|
return (caretBidiLevel & BIDI_LEVEL_UNDEFINED) ?
|
|
Nullable<int16_t>() : Nullable<int16_t>(caretBidiLevel);
|
|
}
|
|
|
|
void
|
|
Selection::SetCaretBidiLevel(const Nullable<int16_t>& aCaretBidiLevel, mozilla::ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED);
|
|
return;
|
|
}
|
|
if (aCaretBidiLevel.IsNull()) {
|
|
mFrameSelection->UndefineCaretBidiLevel();
|
|
} else {
|
|
mFrameSelection->SetCaretBidiLevel(aCaretBidiLevel.Value());
|
|
}
|
|
}
|
|
|
|
nsPrevNextBidiLevels
|
|
nsFrameSelection::GetPrevNextBidiLevels(nsIContent *aNode,
|
|
uint32_t aContentOffset,
|
|
bool aJumpLines) const
|
|
{
|
|
return GetPrevNextBidiLevels(aNode, aContentOffset, mHint, aJumpLines);
|
|
}
|
|
|
|
nsPrevNextBidiLevels
|
|
nsFrameSelection::GetPrevNextBidiLevels(nsIContent* aNode,
|
|
uint32_t aContentOffset,
|
|
CaretAssociateHint aHint,
|
|
bool aJumpLines) const
|
|
{
|
|
// 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 = nsBidi::GetEmbeddingLevel(currentFrame);
|
|
levels.SetData(currentFrame, currentFrame, currentLevel, currentLevel);
|
|
return levels;
|
|
}
|
|
|
|
nsIFrame *newFrame;
|
|
int32_t offset;
|
|
bool jumpedLine, movedOverNonSelectableText;
|
|
nsresult rv = currentFrame->GetFrameFromDirection(direction, false,
|
|
aJumpLines, true,
|
|
&newFrame, &offset, &jumpedLine,
|
|
&movedOverNonSelectableText);
|
|
if (NS_FAILED(rv))
|
|
newFrame = nullptr;
|
|
|
|
FrameBidiData currentBidi = nsBidi::GetBidiData(currentFrame);
|
|
nsBidiLevel currentLevel = currentBidi.embeddingLevel;
|
|
nsBidiLevel newLevel = newFrame ? nsBidi::GetEmbeddingLevel(newFrame)
|
|
: 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->GetType() == nsGkAtoms::brFrame) {
|
|
currentFrame = nullptr;
|
|
currentLevel = currentBidi.baseLevel;
|
|
}
|
|
if (newFrame && newFrame->GetType() == nsGkAtoms::brFrame) {
|
|
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(mShell);
|
|
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),
|
|
mShell->GetPresContext(), aFrameIn,
|
|
eLeaf,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
false, // aFollowOOFs
|
|
false // aSkipPopupChecks
|
|
);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
do {
|
|
*aFrameOut = foundFrame;
|
|
if (aDirection == eDirNext)
|
|
frameTraversal->Next();
|
|
else
|
|
frameTraversal->Prev();
|
|
|
|
foundFrame = frameTraversal->CurrentItem();
|
|
if (!foundFrame)
|
|
return NS_ERROR_FAILURE;
|
|
foundLevel = nsBidi::GetEmbeddingLevel(foundFrame);
|
|
|
|
} 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;
|
|
|
|
mMaintainedAmount = aAmount;
|
|
|
|
const nsRange* anchorFocusRange =
|
|
mDomSelections[index]->GetAnchorFocusRange();
|
|
if (anchorFocusRange && aAmount != eSelectNoAmount) {
|
|
mMaintainRange = anchorFocusRange->CloneRange();
|
|
return NS_OK;
|
|
}
|
|
|
|
mMaintainRange = nullptr;
|
|
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(nsIPresShell* 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);
|
|
|
|
SetCaretBidiLevel(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->SetCaretBidiLevel(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, mHint, &OffsetNotUsed);
|
|
if (!clickInFrame)
|
|
return;
|
|
|
|
SetCaretBidiLevel(nsBidi::GetEmbeddingLevel(clickInFrame));
|
|
}
|
|
|
|
|
|
bool
|
|
nsFrameSelection::AdjustForMaintainedSelection(nsIContent *aContent,
|
|
int32_t aOffset)
|
|
{
|
|
if (!mMaintainRange)
|
|
return false;
|
|
|
|
if (!aContent) {
|
|
return false;
|
|
}
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return false;
|
|
|
|
nsINode* rangeStartNode = mMaintainRange->GetStartParent();
|
|
nsINode* rangeEndNode = mMaintainRange->GetEndParent();
|
|
int32_t rangeStartOffset = mMaintainRange->StartOffset();
|
|
int32_t rangeEndOffset = mMaintainRange->EndOffset();
|
|
|
|
int32_t relToStart =
|
|
nsContentUtils::ComparePoints(rangeStartNode, rangeStartOffset,
|
|
aContent, aOffset);
|
|
int32_t relToEnd =
|
|
nsContentUtils::ComparePoints(rangeEndNode, rangeEndOffset,
|
|
aContent, aOffset);
|
|
|
|
// If aContent/aOffset is inside 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 &&
|
|
mDomSelections[index]->GetDirection() == eDirNext) ||
|
|
(relToEnd < 0 &&
|
|
mDomSelections[index]->GetDirection() == eDirPrevious)) {
|
|
// Set the current range to the maintained range.
|
|
mDomSelections[index]->ReplaceAnchorFocusRange(mMaintainRange);
|
|
if (relToStart < 0 && relToEnd > 0) {
|
|
// We're inside the maintained selection, just keep it selected.
|
|
return true;
|
|
}
|
|
// Reverse the direction of the selection so that the anchor will be on the
|
|
// far side of the maintained selection, relative to aContent/aOffset.
|
|
mDomSelections[index]->SetDirection(relToStart > 0 ? eDirPrevious : eDirNext);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::HandleClick(nsIContent* aNewFocus,
|
|
uint32_t aContentOffset,
|
|
uint32_t aContentEndOffset,
|
|
bool aContinueSelection,
|
|
bool aMultipleSelection,
|
|
CaretAssociateHint aHint)
|
|
{
|
|
if (!aNewFocus)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
InvalidateDesiredPos();
|
|
|
|
if (!aContinueSelection) {
|
|
mMaintainRange = nullptr;
|
|
if (!IsValidSelectionPoint(this, aNewFocus)) {
|
|
mAncestorLimiter = nullptr;
|
|
}
|
|
}
|
|
|
|
// Don't take focus when dragging off of a table
|
|
if (!mDragSelectingCells)
|
|
{
|
|
BidiLevelFromClick(aNewFocus, aContentOffset);
|
|
PostReason(nsISelectionListener::MOUSEDOWN_REASON + nsISelectionListener::DRAG_REASON);
|
|
if (aContinueSelection &&
|
|
AdjustForMaintainedSelection(aNewFocus, aContentOffset))
|
|
return NS_OK; //shift clicked to maintained selection. rejected.
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
AutoPrepareFocusRange prep(mDomSelections[index], aContinueSelection, aMultipleSelection);
|
|
return TakeFocus(aNewFocus, aContentOffset, aContentEndOffset, aHint,
|
|
aContinueSelection, aMultipleSelection);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::HandleDrag(nsIFrame *aFrame, nsPoint aPoint)
|
|
{
|
|
if (!aFrame || !mShell)
|
|
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;
|
|
|
|
if (newFrame->IsSelected() &&
|
|
AdjustForMaintainedSelection(offsets.content, offsets.offset))
|
|
return;
|
|
|
|
// Adjust offsets according to maintained amount
|
|
if (mMaintainRange &&
|
|
mMaintainedAmount != eSelectNoAmount) {
|
|
|
|
nsINode* rangenode = mMaintainRange->GetStartParent();
|
|
int32_t rangeOffset = mMaintainRange->StartOffset();
|
|
int32_t relativePosition =
|
|
nsContentUtils::ComparePoints(rangenode, rangeOffset,
|
|
offsets.content, offsets.offset);
|
|
|
|
nsDirection direction = relativePosition > 0 ? eDirPrevious : eDirNext;
|
|
nsSelectionAmount amount = mMaintainedAmount;
|
|
if (amount == eSelectBeginLine && direction == eDirNext)
|
|
amount = eSelectEndLine;
|
|
|
|
int32_t offset;
|
|
nsIFrame* frame = GetFrameForNodeOffset(offsets.content, offsets.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, mLimiter != nullptr,
|
|
false, false, false);
|
|
if (NS_SUCCEEDED(frame->PeekOffset(&charPos))) {
|
|
frame = charPos.mResultFrame;
|
|
offset = charPos.mContentOffset;
|
|
}
|
|
}
|
|
|
|
nsPeekOffsetStruct pos(amount, direction, offset, nsPoint(0, 0),
|
|
false, mLimiter != nullptr, false, false, false);
|
|
|
|
if (frame && NS_SUCCEEDED(frame->PeekOffset(&pos)) && pos.mResultContent) {
|
|
offsets.content = pos.mResultContent;
|
|
offsets.offset = pos.mContentOffset;
|
|
}
|
|
}
|
|
|
|
HandleClick(offsets.content, offsets.offset, offsets.offset,
|
|
true, false, offsets.associate);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::StartAutoScrollTimer(nsIFrame *aFrame,
|
|
nsPoint aPoint,
|
|
uint32_t aDelay)
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mDomSelections[index]->StartAutoScrollTimer(aFrame, aPoint, aDelay);
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::StopAutoScrollTimer()
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return;
|
|
|
|
mDomSelections[index]->StopAutoScrollTimer();
|
|
}
|
|
|
|
/**
|
|
hard to go from nodes to frames, easy the other way!
|
|
*/
|
|
nsresult
|
|
nsFrameSelection::TakeFocus(nsIContent* aNewFocus,
|
|
uint32_t aContentOffset,
|
|
uint32_t aContentEndOffset,
|
|
CaretAssociateHint aHint,
|
|
bool aContinueSelection,
|
|
bool aMultipleSelection)
|
|
{
|
|
if (!aNewFocus)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
|
|
if (!IsValidSelectionPoint(this,aNewFocus))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Clear all table selection data
|
|
mSelectingTableCellMode = 0;
|
|
mDragSelectingCells = false;
|
|
mStartSelectedCell = nullptr;
|
|
mEndSelectedCell = nullptr;
|
|
mAppendStartSelectedCell = nullptr;
|
|
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
|
|
if (!aContinueSelection) {//single click? setting cursor down
|
|
uint32_t batching = mBatching;//hack to use the collapse code.
|
|
bool changes = mChangesDuringBatching;
|
|
mBatching = 1;
|
|
|
|
if (aMultipleSelection) {
|
|
// Remove existing collapsed ranges as there's no point in having
|
|
// non-anchor/focus collapsed ranges.
|
|
mDomSelections[index]->RemoveCollapsedRanges();
|
|
|
|
RefPtr<nsRange> newRange = new nsRange(aNewFocus);
|
|
|
|
newRange->SetStart(aNewFocus, aContentOffset);
|
|
newRange->SetEnd(aNewFocus, aContentOffset);
|
|
mDomSelections[index]->AddRange(newRange);
|
|
mBatching = batching;
|
|
mChangesDuringBatching = changes;
|
|
} else {
|
|
bool oldDesiredPosSet = mDesiredPosSet; //need to keep old desired position if it was set.
|
|
mDomSelections[index]->Collapse(aNewFocus, aContentOffset);
|
|
mDesiredPosSet = oldDesiredPosSet; //now reset desired pos back.
|
|
mBatching = batching;
|
|
mChangesDuringBatching = changes;
|
|
}
|
|
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(mShell);
|
|
bool editableCell = false;
|
|
RefPtr<nsPresContext> context = mShell->GetPresContext();
|
|
if (context) {
|
|
nsCOMPtr<nsIHTMLEditor> editor = do_QueryInterface(nsContentUtils::GetHTMLEditor(context));
|
|
if (editor) {
|
|
nsINode* cellparent = GetCellParent(aNewFocus);
|
|
nsCOMPtr<nsINode> editorHostNode = editor->GetActiveEditingHost();
|
|
editableCell = cellparent && editorHostNode &&
|
|
nsContentUtils::ContentIsDescendantOf(cellparent, editorHostNode);
|
|
if (editableCell) {
|
|
mCellParent = cellparent;
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" * TakeFocus - Collapsing into new cell\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Now update the range list:
|
|
if (aContinueSelection && aNewFocus)
|
|
{
|
|
int32_t offset;
|
|
nsINode *cellparent = GetCellParent(aNewFocus);
|
|
if (mCellParent && cellparent && cellparent != mCellParent) //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(mCellParent, &offset);
|
|
if (parent)
|
|
HandleTableSelection(parent, offset,
|
|
nsISelectionPrivate::TABLESELECTION_CELL, &event);
|
|
|
|
// Find the parent of this new cell and extend selection to it
|
|
parent = ParentOffset(cellparent, &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)
|
|
{
|
|
mCellParent = cellparent;
|
|
// Continue selection into next cell
|
|
HandleTableSelection(parent, offset,
|
|
nsISelectionPrivate::TABLESELECTION_CELL, &event);
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Don't notify selection listeners if batching is on:
|
|
if (GetBatching())
|
|
return NS_OK;
|
|
return NotifySelectionListeners(SelectionType::eNormal);
|
|
}
|
|
|
|
|
|
SelectionDetails*
|
|
nsFrameSelection::LookUpSelection(nsIContent *aContent,
|
|
int32_t aContentOffset,
|
|
int32_t aContentLength,
|
|
bool aSlowCheck) const
|
|
{
|
|
if (!aContent || !mShell)
|
|
return nullptr;
|
|
|
|
SelectionDetails* details = nullptr;
|
|
|
|
for (size_t j = 0; j < kPresentSelectionTypeCount; j++) {
|
|
if (mDomSelections[j]) {
|
|
mDomSelections[j]->LookUpSelection(aContent, aContentOffset,
|
|
aContentLength, &details,
|
|
ToSelectionType(1 << j),
|
|
aSlowCheck);
|
|
}
|
|
}
|
|
|
|
return details;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::SetDragState(bool aState)
|
|
{
|
|
if (mDragState == aState)
|
|
return;
|
|
|
|
mDragState = aState;
|
|
|
|
if (!mDragState)
|
|
{
|
|
mDragSelectingCells = false;
|
|
// Notify that reason is mouse up.
|
|
PostReason(nsISelectionListener::MOUSEUP_REASON);
|
|
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;
|
|
|
|
nsIPresShell::ScrollAxis verticalScroll = nsIPresShell::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 = nsIPresShell::ScrollAxis(
|
|
nsIPresShell::SCROLL_CENTER, nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE);
|
|
}
|
|
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.
|
|
return mDomSelections[index]->ScrollIntoView(aRegion,
|
|
verticalScroll,
|
|
nsIPresShell::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(mShell);
|
|
|
|
// On macOS, update the selection cache to the new active selection
|
|
// aka the current selection.
|
|
#ifdef XP_MACOSX
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
// Check an active window exists otherwise there cannot be a current selection
|
|
// and that it's a normal selection.
|
|
if (fm->GetActiveWindow() && aSelectionType == SelectionType::eNormal) {
|
|
UpdateSelectionCacheOnRepaintSelection(mDomSelections[index]);
|
|
}
|
|
#endif
|
|
return mDomSelections[index]->Repaint(mShell->GetPresContext());
|
|
}
|
|
|
|
nsIFrame*
|
|
nsFrameSelection::GetFrameForNodeOffset(nsIContent* aNode,
|
|
int32_t aOffset,
|
|
CaretAssociateHint aHint,
|
|
int32_t* aReturnOffset) const
|
|
{
|
|
if (!aNode || !aReturnOffset || !mShell)
|
|
return nullptr;
|
|
|
|
if (aOffset < 0)
|
|
return nullptr;
|
|
|
|
if (!aNode->GetPrimaryFrame() &&
|
|
!mShell->FrameManager()->GetDisplayContentsStyleFor(aNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* returnFrame = nullptr;
|
|
|
|
while (true) {
|
|
*aReturnOffset = aOffset;
|
|
|
|
nsCOMPtr<nsIContent> 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(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.
|
|
|
|
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(theNode);
|
|
if (textNode) {
|
|
if (theNode->GetPrimaryFrame()) {
|
|
if (aOffset > childIndex) {
|
|
uint32_t textLength = 0;
|
|
nsresult rv = textNode->GetLength(&textLength);
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
|
|
*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(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.
|
|
mozilla::dom::ShadowRoot* shadowRoot =
|
|
mozilla::dom::ShadowRoot::FromNode(theNode);
|
|
if (shadowRoot) {
|
|
theNode = shadowRoot->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;
|
|
|
|
// find the child frame containing the offset we want
|
|
returnFrame->GetChildFrameContainingOffset(*aReturnOffset, aHint == CARET_ASSOCIATE_AFTER,
|
|
&aOffset, &returnFrame);
|
|
return returnFrame;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::CommonPageMove(bool aForward,
|
|
bool aExtend,
|
|
nsIScrollableFrame* aScrollableFrame)
|
|
{
|
|
// 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 frame from the scrollable view
|
|
|
|
nsIFrame* scrolledFrame = aScrollableFrame->GetScrolledFrame();
|
|
if (!scrolledFrame)
|
|
return;
|
|
|
|
// find out where the caret is.
|
|
// we should know mDesiredPos value of nsFrameSelection, but I havent seen that behavior in other windows applications yet.
|
|
nsISelection* domSel = GetSelection(SelectionType::eNormal);
|
|
if (!domSel) {
|
|
return;
|
|
}
|
|
|
|
nsRect caretPos;
|
|
nsIFrame* caretFrame = nsCaret::GetGeometry(domSel, &caretPos);
|
|
if (!caretFrame)
|
|
return;
|
|
|
|
//need to adjust caret jump by percentage scroll
|
|
nsSize scrollDelta = aScrollableFrame->GetPageScrollAmount();
|
|
|
|
if (aForward)
|
|
caretPos.y += scrollDelta.height;
|
|
else
|
|
caretPos.y -= scrollDelta.height;
|
|
|
|
caretPos += caretFrame->GetOffsetTo(scrolledFrame);
|
|
|
|
// get a content at desired location
|
|
nsPoint desiredPoint;
|
|
desiredPoint.x = caretPos.x;
|
|
desiredPoint.y = caretPos.y + caretPos.height/2;
|
|
nsIFrame::ContentOffsets offsets =
|
|
scrolledFrame->GetContentOffsetsFromPoint(desiredPoint);
|
|
|
|
if (!offsets.content)
|
|
return;
|
|
|
|
// scroll one page
|
|
mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
|
|
(uint32_t) ScrollInputMethod::MainThreadScrollPage);
|
|
aScrollableFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::PAGES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
|
|
// place the caret
|
|
HandleClick(offsets.content, offsets.offset,
|
|
offsets.offset, aExtend, false, CARET_ASSOCIATE_AFTER);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::PhysicalMove(int16_t aDirection, int16_t aAmount,
|
|
bool aExtend)
|
|
{
|
|
NS_ENSURE_STATE(mShell);
|
|
// Flush out layout, since we need it to be up to date to do caret
|
|
// positioning.
|
|
mShell->FlushPendingNotifications(Flush_Layout);
|
|
|
|
if (!mShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Check that parameters are safe
|
|
if (aDirection < 0 || aDirection > 3 || aAmount < 0 || aAmount > 1) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPresContext *context = mShell->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 = nullptr;
|
|
int32_t offsetused = 0;
|
|
if (NS_SUCCEEDED(sel->GetPrimaryFrameForFocusNode(&frame, &offsetused,
|
|
true))) {
|
|
if (frame) {
|
|
if (!frame->StyleContext()->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->GetType() == nsGkAtoms::textFrame);
|
|
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::CharacterExtendForDelete()
|
|
{
|
|
return MoveCaret(eDirNext, true, eSelectCluster, eLogical);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::CharacterExtendForBackspace()
|
|
{
|
|
return MoveCaret(eDirPrevious, true, eSelectCharacter, eLogical);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::WordMove(bool aForward, bool aExtend)
|
|
{
|
|
return MoveCaret(aForward ? eDirNext : eDirPrevious, aExtend, eSelectWord,
|
|
eUsePrefStyle);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::WordExtendForDelete(bool aForward)
|
|
{
|
|
return MoveCaret(aForward ? eDirNext : eDirPrevious, true, eSelectWord,
|
|
eLogical);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectAll()
|
|
{
|
|
nsCOMPtr<nsIContent> rootContent;
|
|
if (mLimiter)
|
|
{
|
|
rootContent = mLimiter;//addrefit
|
|
}
|
|
else if (mAncestorLimiter) {
|
|
rootContent = mAncestorLimiter;
|
|
}
|
|
else
|
|
{
|
|
NS_ENSURE_STATE(mShell);
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
if (!doc)
|
|
return NS_ERROR_FAILURE;
|
|
rootContent = doc->GetRootElement();
|
|
if (!rootContent)
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
int32_t numChildren = rootContent->GetChildCount();
|
|
PostReason(nsISelectionListener::NO_REASON);
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
AutoPrepareFocusRange prep(mDomSelections[index], false, false);
|
|
return TakeFocus(rootContent, 0, numChildren, CARET_ASSOCIATE_BEFORE, false, false);
|
|
}
|
|
|
|
//////////END FRAMESELECTION
|
|
|
|
void
|
|
nsFrameSelection::StartBatchChanges()
|
|
{
|
|
mBatching++;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::EndBatchChanges(int16_t aReason)
|
|
{
|
|
mBatching--;
|
|
NS_ASSERTION(mBatching >=0,"Bad mBatching");
|
|
|
|
if (mBatching == 0 && mChangesDuringBatching) {
|
|
int16_t postReason = PopReason() | aReason;
|
|
PostReason(postReason);
|
|
mChangesDuringBatching = false;
|
|
NotifySelectionListeners(SelectionType::eNormal);
|
|
}
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::NotifySelectionListeners(SelectionType aSelectionType)
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(aSelectionType);
|
|
if (index >=0 && mDomSelections[index])
|
|
{
|
|
return mDomSelections[index]->NotifySelectionListeners();
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Start of Table Selection methods
|
|
|
|
static bool IsCell(nsIContent *aContent)
|
|
{
|
|
return aContent->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th);
|
|
}
|
|
|
|
nsITableCellLayout*
|
|
nsFrameSelection::GetCellLayout(nsIContent *aCellContent) const
|
|
{
|
|
NS_ENSURE_TRUE(mShell, nullptr);
|
|
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;
|
|
|
|
return mDomSelections[index]->RemoveAllRanges();
|
|
}
|
|
|
|
static nsIContent*
|
|
GetFirstSelectedContent(nsRange* aRange)
|
|
{
|
|
if (!aRange) {
|
|
return nullptr;
|
|
}
|
|
|
|
NS_PRECONDITION(aRange->GetStartParent(), "Must have start parent!");
|
|
NS_PRECONDITION(aRange->GetStartParent()->IsElement(),
|
|
"Unexpected parent");
|
|
|
|
return aRange->GetStartParent()->GetChildAt(aRange->StartOffset());
|
|
}
|
|
|
|
// Table selection support.
|
|
// TODO: Separate table methods into a separate nsITableSelection interface
|
|
nsresult
|
|
nsFrameSelection::HandleTableSelection(nsINode* aParentContent,
|
|
int32_t aContentOffset,
|
|
int32_t aTarget,
|
|
WidgetMouseEvent* aMouseEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aParentContent, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aMouseEvent, NS_ERROR_NULL_POINTER);
|
|
|
|
if (mDragState && mDragSelectingCells && (aTarget & nsISelectionPrivate::TABLESELECTION_TABLE))
|
|
{
|
|
// We were selecting cells and user drags mouse in table border or inbetween cells,
|
|
// just do nothing
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
nsIContent *childContent = aParentContent->GetChildAt(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
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mDomSelections[index]->SetDirection(eDirNext);
|
|
|
|
// Stack-class to wrap all table selection changes in
|
|
// BeginBatchChanges() / EndBatchChanges()
|
|
SelectionBatcher selectionBatcher(mDomSelections[index]);
|
|
|
|
int32_t startRowIndex, startColIndex, curRowIndex, curColIndex;
|
|
if (mDragState && mDragSelectingCells)
|
|
{
|
|
// We are drag-selecting
|
|
if (aTarget != nsISelectionPrivate::TABLESELECTION_TABLE)
|
|
{
|
|
// If dragging in the same cell as last event, do nothing
|
|
if (mEndSelectedCell == childContent)
|
|
return NS_OK;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" mStartSelectedCell = %p, mEndSelectedCell = %p, childContent = %p \n",
|
|
mStartSelectedCell.get(), mEndSelectedCell.get(), childContent);
|
|
#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 = TABLESELECTION_CELL
|
|
|
|
if (mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_ROW ||
|
|
mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
{
|
|
if (mEndSelectedCell)
|
|
{
|
|
// Also check if cell is in same row/col
|
|
result = GetCellIndexes(mEndSelectedCell, startRowIndex, startColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" curRowIndex = %d, startRowIndex = %d, curColIndex = %d, startColIndex = %d\n", curRowIndex, startRowIndex, curColIndex, startColIndex);
|
|
#endif
|
|
if ((mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_ROW && startRowIndex == curRowIndex) ||
|
|
(mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_COLUMN && startColIndex == curColIndex))
|
|
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(childContent, mSelectingTableCellMode);
|
|
}
|
|
else if (mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_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 = GetCellIndexes(mStartSelectedCell, startRowIndex, startColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (startRowIndex == curRowIndex ||
|
|
startColIndex == curColIndex)
|
|
{
|
|
// Force new selection block
|
|
mStartSelectedCell = nullptr;
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
|
|
if (startRowIndex == curRowIndex)
|
|
mSelectingTableCellMode = nsISelectionPrivate::TABLESELECTION_ROW;
|
|
else
|
|
mSelectingTableCellMode = nsISelectionPrivate::TABLESELECTION_COLUMN;
|
|
|
|
return SelectRowOrColumn(childContent, mSelectingTableCellMode);
|
|
}
|
|
}
|
|
|
|
// Reselect block of cells to new end location
|
|
return SelectBlockOfCells(mStartSelectedCell, childContent);
|
|
}
|
|
}
|
|
// Do nothing if dragging in table, but outside a cell
|
|
return NS_OK;
|
|
}
|
|
else
|
|
{
|
|
// Not dragging -- mouse event is down or up
|
|
if (mDragState)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Mouse down event\n");
|
|
#endif
|
|
// Clear cell we stored in mouse-down
|
|
mUnselectCellOnMouseUp = nullptr;
|
|
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_CELL)
|
|
{
|
|
bool isSelected = false;
|
|
|
|
// Check if we have other selected cells
|
|
nsIContent* previousCellNode =
|
|
GetFirstSelectedContent(GetFirstCellRange());
|
|
if (previousCellNode)
|
|
{
|
|
// We have at least 1 other selected cell
|
|
|
|
// Check if new cell is already selected
|
|
nsIFrame *cellFrame = childContent->GetPrimaryFrame();
|
|
if (!cellFrame) return NS_ERROR_NULL_POINTER;
|
|
isSelected = cellFrame->IsSelected();
|
|
}
|
|
else
|
|
{
|
|
// No cells selected -- remove non-cell selection
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
}
|
|
mDragSelectingCells = true; // Signal to start drag-cell-selection
|
|
mSelectingTableCellMode = aTarget;
|
|
// Set start for new drag-selection block (not appended)
|
|
mStartSelectedCell = childContent;
|
|
// The initial block end is same as the start
|
|
mEndSelectedCell = childContent;
|
|
|
|
if (isSelected)
|
|
{
|
|
// Remember this cell to (possibly) unselect it on mouseup
|
|
mUnselectCellOnMouseUp = childContent;
|
|
#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, childContent))
|
|
{
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
// Reset selection mode that is cleared in RemoveAllRanges
|
|
mSelectingTableCellMode = aTarget;
|
|
}
|
|
|
|
return SelectCellElement(childContent);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
else if (aTarget == nsISelectionPrivate::TABLESELECTION_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
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
return CreateAndAddRange(aParentContent, aContentOffset);
|
|
}
|
|
else if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW || aTarget == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("aTarget == %d\n", aTarget);
|
|
#endif
|
|
|
|
// Start drag-selecting mode so multiple rows/cols can be selected
|
|
// Note: Currently, nsFrame::GetDataForTableSelection
|
|
// will never call us for row or column selection on mouse down
|
|
mDragSelectingCells = true;
|
|
|
|
// Force new selection block
|
|
mStartSelectedCell = nullptr;
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
// Always do this AFTER RemoveAllRanges
|
|
mSelectingTableCellMode = aTarget;
|
|
return SelectRowOrColumn(childContent, aTarget);
|
|
}
|
|
}
|
|
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
|
|
int32_t rangeCount;
|
|
result = mDomSelections[index]->GetRangeCount(&rangeCount);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (rangeCount > 0 && aMouseEvent->IsShift() &&
|
|
mAppendStartSelectedCell && mAppendStartSelectedCell != childContent)
|
|
{
|
|
// Shift key is down: append a block selection
|
|
mDragSelectingCells = false;
|
|
return SelectBlockOfCells(mAppendStartSelectedCell, childContent);
|
|
}
|
|
|
|
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( childContent == 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( int32_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 = mDomSelections[index]->GetRangeAt(i);
|
|
if (!range) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsINode* parent = range->GetStartParent();
|
|
if (!parent) return NS_ERROR_NULL_POINTER;
|
|
|
|
int32_t offset = range->StartOffset();
|
|
// Be sure previous selection is a table cell
|
|
nsIContent* child = parent->GetChildAt(offset);
|
|
if (child && IsCell(child))
|
|
previousCellParent = parent;
|
|
|
|
// 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 mDomSelections[index]->Collapse(childContent, 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 (childContent == mAppendStartSelectedCell)
|
|
mAppendStartSelectedCell = nullptr;
|
|
|
|
// Deselect cell by removing its range from selection
|
|
return mDomSelections[index]->RemoveRange(range);
|
|
}
|
|
}
|
|
mUnselectCellOnMouseUp = nullptr;
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectBlockOfCells(nsIContent *aStartCell, nsIContent *aEndCell)
|
|
{
|
|
NS_ENSURE_TRUE(aStartCell, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aEndCell, NS_ERROR_NULL_POINTER);
|
|
mEndSelectedCell = aEndCell;
|
|
|
|
nsCOMPtr<nsIContent> startCell;
|
|
nsresult result = NS_OK;
|
|
|
|
// If new end cell is in a different table, do nothing
|
|
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
|
|
UnselectCells(table, startRowIndex, startColIndex, endRowIndex, endColIndex,
|
|
true);
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::UnselectCells(nsIContent *aTableContent,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex,
|
|
bool aRemoveOutsideOfCellRange)
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
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();
|
|
nsIContent* cellNode = GetFirstSelectedContent(range);
|
|
NS_PRECONDITION(!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) {
|
|
|
|
mDomSelections[index]->RemoveRange(range);
|
|
// 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);
|
|
|
|
int32_t origRowIndex, origColIndex;
|
|
cellFrame->GetRowIndex(origRowIndex);
|
|
cellFrame->GetColIndex(origColIndex);
|
|
uint32_t actualRowSpan =
|
|
tableFrame->GetEffectiveRowSpanAt(origRowIndex, origColIndex);
|
|
uint32_t actualColSpan =
|
|
tableFrame->GetEffectiveColSpanAt(curRowIndex, curColIndex);
|
|
if (origRowIndex <= maxRowIndex && maxRowIndex >= 0 &&
|
|
origRowIndex + actualRowSpan - 1 >= static_cast<uint32_t>(minRowIndex) &&
|
|
origColIndex <= maxColIndex && maxColIndex >= 0 &&
|
|
origColIndex + actualColSpan - 1 >= static_cast<uint32_t>(minColIndex)) {
|
|
|
|
mDomSelections[index]->RemoveRange(range);
|
|
// Since we've removed the range, decrement pointer to next range
|
|
mSelectedCellIndex--;
|
|
}
|
|
}
|
|
}
|
|
|
|
range = GetNextCellRange();
|
|
cellNode = GetFirstSelectedContent(range);
|
|
NS_PRECONDITION(!range || cellNode, "Must have cellNode if had a range");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::AddCellsToSelection(nsIContent *aTableContent,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex)
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsTableWrapperFrame* tableFrame = do_QueryFrame(aTableContent->GetPrimaryFrame());
|
|
if (!tableFrame) // Check that |table| is a table.
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsresult result = NS_OK;
|
|
int32_t row = aStartRowIndex;
|
|
while(true)
|
|
{
|
|
int32_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) {
|
|
int32_t origRow, origCol;
|
|
cellFrame->GetRowIndex(origRow);
|
|
cellFrame->GetColIndex(origCol);
|
|
if (origRow == row && origCol == col && !cellFrame->IsSelected()) {
|
|
result = SelectCellElement(cellFrame->GetContent());
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
}
|
|
// Done when we reach end column
|
|
if (col == aEndColumnIndex) break;
|
|
|
|
if (aStartColumnIndex < aEndColumnIndex)
|
|
col ++;
|
|
else
|
|
col--;
|
|
}
|
|
if (row == 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)
|
|
{
|
|
return UnselectCells(aTable, aStartRowIndex, aStartColumnIndex,
|
|
aEndRowIndex, aEndColumnIndex, false);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::RestrictCellsToSelection(nsIContent *aTable,
|
|
int32_t aStartRowIndex,
|
|
int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex,
|
|
int32_t aEndColumnIndex)
|
|
{
|
|
return UnselectCells(aTable, aStartRowIndex, aStartColumnIndex,
|
|
aEndRowIndex, aEndColumnIndex, true);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectRowOrColumn(nsIContent *aCellContent, uint32_t aTarget)
|
|
{
|
|
if (!aCellContent) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsIContent* table = GetParentTable(aCellContent);
|
|
if (!table) return 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 NS_ERROR_FAILURE;
|
|
nsITableCellLayout *cellLayout = GetCellLayout(aCellContent);
|
|
if (!cellLayout) return NS_ERROR_FAILURE;
|
|
|
|
// Get location of target cell:
|
|
int32_t rowIndex, colIndex;
|
|
nsresult result = cellLayout->GetCellIndexes(rowIndex, colIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// Be sure we start at proper beginning
|
|
// (This allows us to select row or col given ANY cell!)
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW)
|
|
colIndex = 0;
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
rowIndex = 0;
|
|
|
|
nsCOMPtr<nsIContent> firstCell, lastCell;
|
|
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 (!firstCell)
|
|
firstCell = curCellContent;
|
|
|
|
lastCell = curCellContent.forget();
|
|
|
|
// Move to next cell in cellmap, skipping spanned locations
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW)
|
|
colIndex += tableFrame->GetEffectiveRowSpanAt(rowIndex, colIndex);
|
|
else
|
|
rowIndex += tableFrame->GetEffectiveRowSpanAt(rowIndex, colIndex);
|
|
}
|
|
|
|
// Use SelectBlockOfCells:
|
|
// This will replace existing selection,
|
|
// but allow unselecting by dragging out of selected region
|
|
if (firstCell && lastCell)
|
|
{
|
|
if (!mStartSelectedCell)
|
|
{
|
|
// We are starting a new block, so select the first cell
|
|
result = SelectCellElement(firstCell);
|
|
if (NS_FAILED(result)) return result;
|
|
mStartSelectedCell = firstCell;
|
|
}
|
|
nsCOMPtr<nsIContent> lastCellContent = do_QueryInterface(lastCell);
|
|
result = SelectBlockOfCells(mStartSelectedCell, lastCellContent);
|
|
|
|
// This gets set to the cell at end of row/col,
|
|
// but we need it to be the cell under cursor
|
|
mEndSelectedCell = aCellContent;
|
|
return result;
|
|
}
|
|
|
|
#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 (aTarget == nsISelectionPrivate::TABLESELECTION_ROW)
|
|
colIndex += actualColSpan;
|
|
else
|
|
rowIndex += actualRowSpan;
|
|
}
|
|
while (cellElement);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::GetFirstCellNodeInRange(nsRange *aRange) const
|
|
{
|
|
if (!aRange) return nullptr;
|
|
|
|
nsINode* startParent = aRange->GetStartParent();
|
|
if (!startParent)
|
|
return nullptr;
|
|
|
|
int32_t offset = aRange->StartOffset();
|
|
|
|
nsIContent* childContent = startParent->GetChildAt(offset);
|
|
if (!childContent)
|
|
return nullptr;
|
|
// Don't return node if not a cell
|
|
if (!IsCell(childContent))
|
|
return nullptr;
|
|
|
|
return childContent;
|
|
}
|
|
|
|
nsRange*
|
|
nsFrameSelection::GetFirstCellRange()
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return nullptr;
|
|
|
|
nsRange* firstRange = mDomSelections[index]->GetRangeAt(0);
|
|
if (!GetFirstCellNodeInRange(firstRange)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Setup for next cell
|
|
mSelectedCellIndex = 1;
|
|
|
|
return firstRange;
|
|
}
|
|
|
|
nsRange*
|
|
nsFrameSelection::GetNextCellRange()
|
|
{
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return nullptr;
|
|
|
|
nsRange* range = mDomSelections[index]->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;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::GetCellIndexes(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);
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::IsInSameTable(nsIContent *aContent1,
|
|
nsIContent *aContent2) const
|
|
{
|
|
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;
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::GetParentTable(nsIContent *aCell) const
|
|
{
|
|
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)
|
|
{
|
|
nsIContent *parent = aCellElement->GetParent();
|
|
|
|
// Get child offset
|
|
int32_t offset = parent->IndexOf(aCellElement);
|
|
|
|
return CreateAndAddRange(parent, offset);
|
|
}
|
|
|
|
nsresult
|
|
Selection::getTableCellLocationFromRange(nsRange* aRange,
|
|
int32_t* aSelectionType,
|
|
int32_t* aRow, int32_t* aCol)
|
|
{
|
|
if (!aRange || !aSelectionType || !aRow || !aCol)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aSelectionType = nsISelectionPrivate::TABLESELECTION_NONE;
|
|
*aRow = 0;
|
|
*aCol = 0;
|
|
|
|
// Must have access to frame selection to get cell info
|
|
if (!mFrameSelection) return NS_OK;
|
|
|
|
nsresult result = GetTableSelectionType(aRange, aSelectionType);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// Don't fail if range does not point to a single table cell,
|
|
// let aSelectionType tell user if we don't have a cell
|
|
if (*aSelectionType != nsISelectionPrivate::TABLESELECTION_CELL)
|
|
return NS_OK;
|
|
|
|
// Get the child content (the cell) pointed to by starting node of range
|
|
// We do minimal checking since GetTableSelectionType assures
|
|
// us that this really is a table cell
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aRange->GetStartParent());
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIContent *child = content->GetChildAt(aRange->StartOffset());
|
|
if (!child)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//Note: This is a non-ref-counted pointer to the frame
|
|
nsITableCellLayout *cellLayout = mFrameSelection->GetCellLayout(child);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
if (!cellLayout)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return cellLayout->GetCellIndexes(*aRow, *aCol);
|
|
}
|
|
|
|
nsresult
|
|
Selection::addTableCellRange(nsRange* aRange, bool* aDidAddRange,
|
|
int32_t* aOutIndex)
|
|
{
|
|
if (!aDidAddRange || !aOutIndex)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aDidAddRange = false;
|
|
*aOutIndex = -1;
|
|
|
|
if (!mFrameSelection)
|
|
return NS_OK;
|
|
|
|
if (!aRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result;
|
|
|
|
// Get if we are adding a cell selection and the row, col of cell if we are
|
|
int32_t newRow, newCol, tableMode;
|
|
result = getTableCellLocationFromRange(aRange, &tableMode, &newRow, &newCol);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// If not adding a cell range, we are done here
|
|
if (tableMode != nsISelectionPrivate::TABLESELECTION_CELL)
|
|
{
|
|
mFrameSelection->mSelectingTableCellMode = tableMode;
|
|
// Don't fail if range isn't a selected cell, aDidAddRange tells caller if we didn't proceed
|
|
return NS_OK;
|
|
}
|
|
|
|
// Set frame selection mode only if not already set to a table mode
|
|
// so we don't lose the select row and column flags (not detected by getTableCellLocation)
|
|
if (mFrameSelection->mSelectingTableCellMode == TABLESELECTION_NONE)
|
|
mFrameSelection->mSelectingTableCellMode = tableMode;
|
|
|
|
*aDidAddRange = true;
|
|
return AddItem(aRange, aOutIndex);
|
|
}
|
|
|
|
//TODO: Figure out TABLESELECTION_COLUMN and TABLESELECTION_ALLCELLS
|
|
nsresult
|
|
Selection::GetTableSelectionType(nsIDOMRange* aDOMRange,
|
|
int32_t* aTableSelectionType)
|
|
{
|
|
if (!aDOMRange || !aTableSelectionType)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsRange* range = static_cast<nsRange*>(aDOMRange);
|
|
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_NONE;
|
|
|
|
// Must have access to frame selection to get cell info
|
|
if(!mFrameSelection) return NS_OK;
|
|
|
|
nsINode* startNode = range->GetStartParent();
|
|
if (!startNode) return NS_ERROR_FAILURE;
|
|
|
|
nsINode* endNode = range->GetEndParent();
|
|
if (!endNode) return NS_ERROR_FAILURE;
|
|
|
|
// Not a single selected node
|
|
if (startNode != endNode) return NS_OK;
|
|
|
|
int32_t startOffset = range->StartOffset();
|
|
int32_t endOffset = range->EndOffset();
|
|
|
|
// Not a single selected node
|
|
if ((endOffset - startOffset) != 1)
|
|
return NS_OK;
|
|
|
|
nsIContent* startContent = static_cast<nsIContent*>(startNode);
|
|
if (!(startNode->IsElement() && startContent->IsHTMLElement())) {
|
|
// Implies a check for being an element; if we ever make this work
|
|
// for non-HTML, need to keep checking for elements.
|
|
return NS_OK;
|
|
}
|
|
|
|
if (startContent->IsHTMLElement(nsGkAtoms::tr))
|
|
{
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_CELL;
|
|
}
|
|
else //check to see if we are selecting a table or row (column and all cells not done yet)
|
|
{
|
|
nsIContent *child = startNode->GetChildAt(startOffset);
|
|
if (!child)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (child->IsHTMLElement(nsGkAtoms::table))
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_TABLE;
|
|
else if (child->IsHTMLElement(nsGkAtoms::tr))
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_ROW;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::CreateAndAddRange(nsINode *aParentNode, int32_t aOffset)
|
|
{
|
|
if (!aParentNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
RefPtr<nsRange> range = new nsRange(aParentNode);
|
|
|
|
// Set range around child at given offset
|
|
nsresult result = range->SetStart(aParentNode, aOffset);
|
|
if (NS_FAILED(result)) return result;
|
|
result = range->SetEnd(aParentNode, aOffset+1);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mDomSelections[index]->AddRange(range);
|
|
}
|
|
|
|
// End of Table Selection
|
|
|
|
void
|
|
nsFrameSelection::SetAncestorLimiter(nsIContent *aLimiter)
|
|
{
|
|
if (mAncestorLimiter != aLimiter) {
|
|
mAncestorLimiter = aLimiter;
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return;
|
|
|
|
if (!IsValidSelectionPoint(this, mDomSelections[index]->GetFocusNode())) {
|
|
ClearNormalSelection();
|
|
if (mAncestorLimiter) {
|
|
PostReason(nsISelectionListener::NO_REASON);
|
|
TakeFocus(mAncestorLimiter, 0, 0, CARET_ASSOCIATE_BEFORE, false, false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//END nsFrameSelection methods
|
|
|
|
|
|
//BEGIN nsISelection interface implementations
|
|
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::DeleteFromDocument()
|
|
{
|
|
nsresult res;
|
|
|
|
// If we're already collapsed, then we do nothing (bug 719503).
|
|
bool isCollapsed;
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mDomSelections[index]->GetIsCollapsed( &isCollapsed);
|
|
if (isCollapsed)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<Selection> selection = mDomSelections[index];
|
|
for (uint32_t rangeIdx = 0; rangeIdx < selection->RangeCount(); ++rangeIdx) {
|
|
RefPtr<nsRange> range = selection->GetRangeAt(rangeIdx);
|
|
res = range->DeleteContents();
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
}
|
|
|
|
// Collapse to the new location.
|
|
// If we deleted one character, then we move back one element.
|
|
// FIXME We don't know how to do this past frame boundaries yet.
|
|
if (isCollapsed)
|
|
mDomSelections[index]->Collapse(mDomSelections[index]->GetAnchorNode(), mDomSelections[index]->AnchorOffset()-1);
|
|
else if (mDomSelections[index]->AnchorOffset() > 0)
|
|
mDomSelections[index]->Collapse(mDomSelections[index]->GetAnchorNode(), mDomSelections[index]->AnchorOffset());
|
|
#ifdef DEBUG
|
|
else
|
|
printf("Don't know how to set selection back past frame boundary\n");
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::SetDelayedCaretData(WidgetMouseEvent* aMouseEvent)
|
|
{
|
|
if (aMouseEvent) {
|
|
mDelayedMouseEventValid = true;
|
|
mDelayedMouseEventIsShift = aMouseEvent->IsShift();
|
|
mDelayedMouseEventClickCount = aMouseEvent->mClickCount;
|
|
} else {
|
|
mDelayedMouseEventValid = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::DisconnectFromPresShell()
|
|
{
|
|
RefPtr<AccessibleCaretEventHub> eventHub = mShell->GetAccessibleCaretEventHub();
|
|
if (eventHub) {
|
|
int8_t index = GetIndexFromSelectionType(SelectionType::eNormal);
|
|
mDomSelections[index]->RemoveSelectionListener(eventHub);
|
|
}
|
|
|
|
StopAutoScrollTimer();
|
|
for (size_t i = 0; i < kPresentSelectionTypeCount; i++) {
|
|
mDomSelections[i]->Clear(nullptr);
|
|
}
|
|
mShell = nullptr;
|
|
}
|
|
|
|
//END nsISelection interface implementations
|
|
|
|
#if 0
|
|
#pragma mark -
|
|
#endif
|
|
|
|
// mozilla::dom::Selection implementation
|
|
|
|
// note: this can return a nil anchor node
|
|
|
|
Selection::Selection()
|
|
: mCachedOffsetForFrame(nullptr)
|
|
, mDirection(eDirNext)
|
|
, mSelectionType(SelectionType::eNormal)
|
|
, mUserInitiated(false)
|
|
, mSelectionChangeBlockerCount(0)
|
|
{
|
|
}
|
|
|
|
Selection::Selection(nsFrameSelection* aList)
|
|
: mFrameSelection(aList)
|
|
, mCachedOffsetForFrame(nullptr)
|
|
, mDirection(eDirNext)
|
|
, mSelectionType(SelectionType::eNormal)
|
|
, mUserInitiated(false)
|
|
, mSelectionChangeBlockerCount(0)
|
|
{
|
|
}
|
|
|
|
Selection::~Selection()
|
|
{
|
|
setAnchorFocusRange(-1);
|
|
|
|
uint32_t count = mRanges.Length();
|
|
for (uint32_t i = 0; i < count; ++i) {
|
|
mRanges[i].mRange->SetSelection(nullptr);
|
|
}
|
|
|
|
if (mAutoScrollTimer) {
|
|
mAutoScrollTimer->Stop();
|
|
mAutoScrollTimer = nullptr;
|
|
}
|
|
|
|
mScrollEvent.Revoke();
|
|
|
|
if (mCachedOffsetForFrame) {
|
|
delete mCachedOffsetForFrame;
|
|
mCachedOffsetForFrame = nullptr;
|
|
}
|
|
}
|
|
|
|
nsIDocument*
|
|
Selection::GetParentObject() const
|
|
{
|
|
nsIPresShell* shell = GetPresShell();
|
|
if (shell) {
|
|
return shell->GetDocument();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(Selection)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Selection)
|
|
// Unlink the selection listeners *before* we do RemoveAllRanges since
|
|
// we don't want to notify the listeners during JS GC (they could be
|
|
// in JS!).
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSelectionListeners)
|
|
tmp->RemoveAllRanges();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Selection)
|
|
{
|
|
uint32_t i, count = tmp->mRanges.Length();
|
|
for (i = 0; i < count; ++i) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRanges[i].mRange)
|
|
}
|
|
}
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAnchorFocusRange)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectionListeners)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Selection)
|
|
|
|
// QueryInterface implementation for Selection
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Selection)
|
|
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
|
|
NS_INTERFACE_MAP_ENTRY(nsISelection)
|
|
NS_INTERFACE_MAP_ENTRY(nsISelectionPrivate)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISelection)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(Selection)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(Selection)
|
|
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetAnchorNode(nsIDOMNode** aAnchorNode)
|
|
{
|
|
nsINode* anchorNode = GetAnchorNode();
|
|
if (anchorNode) {
|
|
return CallQueryInterface(anchorNode, aAnchorNode);
|
|
}
|
|
|
|
*aAnchorNode = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsINode*
|
|
Selection::GetAnchorNode()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return nullptr;
|
|
|
|
if (GetDirection() == eDirNext) {
|
|
return mAnchorFocusRange->GetStartParent();
|
|
}
|
|
|
|
return mAnchorFocusRange->GetEndParent();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetAnchorOffset(int32_t* aAnchorOffset)
|
|
{
|
|
*aAnchorOffset = static_cast<int32_t>(AnchorOffset());
|
|
return NS_OK;
|
|
}
|
|
|
|
// note: this can return a nil focus node
|
|
NS_IMETHODIMP
|
|
Selection::GetFocusNode(nsIDOMNode** aFocusNode)
|
|
{
|
|
nsINode* focusNode = GetFocusNode();
|
|
if (focusNode) {
|
|
return CallQueryInterface(focusNode, aFocusNode);
|
|
}
|
|
|
|
*aFocusNode = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsINode*
|
|
Selection::GetFocusNode()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return nullptr;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->GetEndParent();
|
|
}
|
|
|
|
return mAnchorFocusRange->GetStartParent();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetFocusOffset(int32_t* aFocusOffset)
|
|
{
|
|
*aFocusOffset = static_cast<int32_t>(FocusOffset());
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::setAnchorFocusRange(int32_t indx)
|
|
{
|
|
if (indx >= (int32_t)mRanges.Length())
|
|
return;
|
|
if (indx < 0) //release all
|
|
{
|
|
mAnchorFocusRange = nullptr;
|
|
}
|
|
else{
|
|
mAnchorFocusRange = mRanges[indx].mRange;
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
Selection::AnchorOffset()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return 0;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->StartOffset();
|
|
}
|
|
|
|
return mAnchorFocusRange->EndOffset();
|
|
}
|
|
|
|
uint32_t
|
|
Selection::FocusOffset()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return 0;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->EndOffset();
|
|
}
|
|
|
|
return mAnchorFocusRange->StartOffset();
|
|
}
|
|
|
|
static nsresult
|
|
CompareToRangeStart(nsINode* aCompareNode, int32_t aCompareOffset,
|
|
nsRange* aRange, int32_t* aCmp)
|
|
{
|
|
nsINode* start = aRange->GetStartParent();
|
|
NS_ENSURE_STATE(aCompareNode && start);
|
|
// If the nodes that we're comparing are not in the same document,
|
|
// assume that aCompareNode will fall at the end of the ranges.
|
|
if (aCompareNode->GetComposedDoc() != start->GetComposedDoc() ||
|
|
!start->GetComposedDoc()) {
|
|
*aCmp = 1;
|
|
} else {
|
|
*aCmp = nsContentUtils::ComparePoints(aCompareNode, aCompareOffset,
|
|
start, aRange->StartOffset());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
CompareToRangeEnd(nsINode* aCompareNode, int32_t aCompareOffset,
|
|
nsRange* aRange, int32_t* aCmp)
|
|
{
|
|
nsINode* end = aRange->GetEndParent();
|
|
NS_ENSURE_STATE(aCompareNode && end);
|
|
// If the nodes that we're comparing are not in the same document,
|
|
// assume that aCompareNode will fall at the end of the ranges.
|
|
if (aCompareNode->GetComposedDoc() != end->GetComposedDoc() ||
|
|
!end->GetComposedDoc()) {
|
|
*aCmp = 1;
|
|
} else {
|
|
*aCmp = nsContentUtils::ComparePoints(aCompareNode, aCompareOffset,
|
|
end, aRange->EndOffset());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Selection::FindInsertionPoint
|
|
//
|
|
// Binary searches the given sorted array of ranges for the insertion point
|
|
// for the given node/offset. The given comparator is used, and the index
|
|
// where the point should appear in the array is placed in *aInsertionPoint.
|
|
//
|
|
// If there is an item in the array equal to the input point, we will return
|
|
// the index of this item.
|
|
|
|
nsresult
|
|
Selection::FindInsertionPoint(
|
|
nsTArray<RangeData>* aElementArray,
|
|
nsINode* aPointNode, int32_t aPointOffset,
|
|
nsresult (*aComparator)(nsINode*,int32_t,nsRange*,int32_t*),
|
|
int32_t* aPoint)
|
|
{
|
|
*aPoint = 0;
|
|
int32_t beginSearch = 0;
|
|
int32_t endSearch = aElementArray->Length(); // one beyond what to check
|
|
|
|
if (endSearch) {
|
|
int32_t center = endSearch - 1; // Check last index, then binary search
|
|
do {
|
|
nsRange* range = (*aElementArray)[center].mRange;
|
|
|
|
int32_t cmp;
|
|
nsresult rv = aComparator(aPointNode, aPointOffset, range, &cmp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (cmp < 0) { // point < cur
|
|
endSearch = center;
|
|
} else if (cmp > 0) { // point > cur
|
|
beginSearch = center + 1;
|
|
} else { // found match, done
|
|
beginSearch = center;
|
|
break;
|
|
}
|
|
center = (endSearch - beginSearch) / 2 + beginSearch;
|
|
} while (endSearch - beginSearch > 0);
|
|
}
|
|
|
|
*aPoint = beginSearch;
|
|
return NS_OK;
|
|
}
|
|
|
|
// Selection::SubtractRange
|
|
//
|
|
// A helper function that subtracts aSubtract from aRange, and adds
|
|
// 1 or 2 RangeData objects representing the remaining non-overlapping
|
|
// difference to aOutput. It is assumed that the caller has checked that
|
|
// aRange and aSubtract do indeed overlap
|
|
|
|
nsresult
|
|
Selection::SubtractRange(RangeData* aRange, nsRange* aSubtract,
|
|
nsTArray<RangeData>* aOutput)
|
|
{
|
|
nsRange* range = aRange->mRange;
|
|
|
|
// First we want to compare to the range start
|
|
int32_t cmp;
|
|
nsresult rv = CompareToRangeStart(range->GetStartParent(),
|
|
range->StartOffset(),
|
|
aSubtract, &cmp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Also, make a comparison to the range end
|
|
int32_t cmp2;
|
|
rv = CompareToRangeEnd(range->GetEndParent(),
|
|
range->EndOffset(),
|
|
aSubtract, &cmp2);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// If the existing range left overlaps the new range (aSubtract) then
|
|
// cmp < 0, and cmp2 < 0
|
|
// If it right overlaps the new range then cmp > 0 and cmp2 > 0
|
|
// If it fully contains the new range, then cmp < 0 and cmp2 > 0
|
|
|
|
if (cmp2 > 0) {
|
|
// We need to add a new RangeData to the output, running from
|
|
// the end of aSubtract to the end of range
|
|
RefPtr<nsRange> postOverlap = new nsRange(aSubtract->GetEndParent());
|
|
|
|
rv =
|
|
postOverlap->SetStart(aSubtract->GetEndParent(), aSubtract->EndOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv =
|
|
postOverlap->SetEnd(range->GetEndParent(), range->EndOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!postOverlap->Collapsed()) {
|
|
if (!aOutput->InsertElementAt(0, RangeData(postOverlap)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
(*aOutput)[0].mTextRangeStyle = aRange->mTextRangeStyle;
|
|
}
|
|
}
|
|
|
|
if (cmp < 0) {
|
|
// We need to add a new RangeData to the output, running from
|
|
// the start of the range to the start of aSubtract
|
|
RefPtr<nsRange> preOverlap = new nsRange(range->GetStartParent());
|
|
|
|
nsresult rv =
|
|
preOverlap->SetStart(range->GetStartParent(), range->StartOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv =
|
|
preOverlap->SetEnd(aSubtract->GetStartParent(), aSubtract->StartOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!preOverlap->Collapsed()) {
|
|
if (!aOutput->InsertElementAt(0, RangeData(preOverlap)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
(*aOutput)[0].mTextRangeStyle = aRange->mTextRangeStyle;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::UserSelectRangesToAdd(nsRange* aItem, nsTArray<RefPtr<nsRange>>& aRangesToAdd)
|
|
{
|
|
aItem->ExcludeNonSelectableNodes(&aRangesToAdd);
|
|
if (aRangesToAdd.IsEmpty()) {
|
|
ErrorResult err;
|
|
nsINode* node = aItem->GetStartContainer(err);
|
|
if (node && node->IsContent() && node->AsContent()->GetEditingHost()) {
|
|
// A contenteditable node with user-select:none, for example.
|
|
// Allow it to have a collapsed selection (for the caret).
|
|
aItem->Collapse(GetDirection() == eDirPrevious);
|
|
aRangesToAdd.AppendElement(aItem);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
Selection::AddItem(nsRange* aItem, int32_t* aOutIndex, bool aNoStartSelect)
|
|
{
|
|
if (!aItem)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (!aItem->IsPositioned())
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
NS_ASSERTION(aOutIndex, "aOutIndex can't be null");
|
|
|
|
if (mUserInitiated) {
|
|
AutoTArray<RefPtr<nsRange>, 4> rangesToAdd;
|
|
*aOutIndex = -1;
|
|
|
|
if (!aNoStartSelect &&
|
|
mSelectionType == SelectionType::eNormal &&
|
|
nsFrameSelection::sSelectionEventsEnabled && Collapsed() &&
|
|
!IsBlockingSelectionChangeEvents()) {
|
|
// First, we generate the ranges to add with a scratch range, which is a
|
|
// clone of the original range passed in. We do this seperately, because the
|
|
// selectstart event could have caused the world to change, and required
|
|
// ranges to be re-generated
|
|
RefPtr<nsRange> scratchRange = aItem->CloneRange();
|
|
UserSelectRangesToAdd(scratchRange, rangesToAdd);
|
|
bool newRangesNonEmpty = rangesToAdd.Length() > 1 ||
|
|
(rangesToAdd.Length() == 1 && !rangesToAdd[0]->Collapsed());
|
|
|
|
MOZ_ASSERT(!newRangesNonEmpty || nsContentUtils::IsSafeToRunScript());
|
|
if (newRangesNonEmpty && nsContentUtils::IsSafeToRunScript()) {
|
|
// We consider a selection to be starting if we are currently collapsed,
|
|
// and the selection is becoming uncollapsed, and this is caused by a user
|
|
// initiated event.
|
|
bool defaultAction = true;
|
|
|
|
// Get the first element which isn't in a native anonymous subtree
|
|
nsCOMPtr<nsINode> target = aItem->GetStartParent();
|
|
while (target && target->IsInNativeAnonymousSubtree()) {
|
|
target = target->GetParent();
|
|
}
|
|
|
|
nsContentUtils::DispatchTrustedEvent(GetParentObject(), target,
|
|
NS_LITERAL_STRING("selectstart"),
|
|
true, true, &defaultAction);
|
|
|
|
if (!defaultAction) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// As we just dispatched an event to the DOM, something could have
|
|
// changed under our feet. Re-generate the rangesToAdd array, and ensure
|
|
// that the range we are about to add is still valid.
|
|
if (!aItem->IsPositioned()) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
|
|
// The scratch ranges we generated may be invalid now, throw them out
|
|
rangesToAdd.ClearAndRetainStorage();
|
|
}
|
|
|
|
// Generate the ranges to add
|
|
UserSelectRangesToAdd(aItem, rangesToAdd);
|
|
size_t newAnchorFocusIndex =
|
|
GetDirection() == eDirPrevious ? 0 : rangesToAdd.Length() - 1;
|
|
for (size_t i = 0; i < rangesToAdd.Length(); ++i) {
|
|
int32_t index;
|
|
nsresult rv = AddItemInternal(rangesToAdd[i], &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (i == newAnchorFocusIndex) {
|
|
*aOutIndex = index;
|
|
rangesToAdd[i]->SetIsGenerated(false);
|
|
} else {
|
|
rangesToAdd[i]->SetIsGenerated(true);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
return AddItemInternal(aItem, aOutIndex);
|
|
}
|
|
|
|
nsresult
|
|
Selection::AddItemInternal(nsRange* aItem, int32_t* aOutIndex)
|
|
{
|
|
MOZ_ASSERT(aItem);
|
|
MOZ_ASSERT(aItem->IsPositioned());
|
|
MOZ_ASSERT(aOutIndex);
|
|
|
|
*aOutIndex = -1;
|
|
|
|
// a common case is that we have no ranges yet
|
|
if (mRanges.Length() == 0) {
|
|
if (!mRanges.AppendElement(RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
aItem->SetSelection(this);
|
|
|
|
*aOutIndex = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t startIndex, endIndex;
|
|
nsresult rv = GetIndicesForInterval(aItem->GetStartParent(),
|
|
aItem->StartOffset(),
|
|
aItem->GetEndParent(),
|
|
aItem->EndOffset(), false,
|
|
&startIndex, &endIndex);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (endIndex == -1) {
|
|
// All ranges start after the given range. We can insert our range at
|
|
// position 0, knowing there are no overlaps (handled below)
|
|
startIndex = 0;
|
|
endIndex = 0;
|
|
} else if (startIndex == -1) {
|
|
// All ranges end before the given range. We can insert our range at
|
|
// the end of the array, knowing there are no overlaps (handled below)
|
|
startIndex = mRanges.Length();
|
|
endIndex = startIndex;
|
|
}
|
|
|
|
// If the range is already contained in mRanges, silently succeed
|
|
bool sameRange = EqualsRangeAtPoint(aItem->GetStartParent(),
|
|
aItem->StartOffset(),
|
|
aItem->GetEndParent(),
|
|
aItem->EndOffset(), startIndex);
|
|
if (sameRange) {
|
|
*aOutIndex = startIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (startIndex == endIndex) {
|
|
// The new range doesn't overlap any existing ranges
|
|
if (!mRanges.InsertElementAt(startIndex, RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
aItem->SetSelection(this);
|
|
*aOutIndex = startIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
// We now know that at least 1 existing range overlaps with the range that
|
|
// we are trying to add. In fact, the only ranges of interest are those at
|
|
// the two end points, startIndex and endIndex - 1 (which may point to the
|
|
// same range) as these may partially overlap the new range. Any ranges
|
|
// between these indices are fully overlapped by the new range, and so can be
|
|
// removed
|
|
nsTArray<RangeData> overlaps;
|
|
if (!overlaps.InsertElementAt(0, mRanges[startIndex]))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
if (endIndex - 1 != startIndex) {
|
|
if (!overlaps.InsertElementAt(1, mRanges[endIndex - 1]))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Remove all the overlapping ranges
|
|
for (int32_t i = startIndex; i < endIndex; ++i) {
|
|
mRanges[i].mRange->SetSelection(nullptr);
|
|
}
|
|
mRanges.RemoveElementsAt(startIndex, endIndex - startIndex);
|
|
|
|
nsTArray<RangeData> temp;
|
|
for (int32_t i = overlaps.Length() - 1; i >= 0; i--) {
|
|
nsresult rv = SubtractRange(&overlaps[i], aItem, &temp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// Insert the new element into our "leftovers" array
|
|
int32_t insertionPoint;
|
|
rv = FindInsertionPoint(&temp, aItem->GetStartParent(),
|
|
aItem->StartOffset(), CompareToRangeStart,
|
|
&insertionPoint);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!temp.InsertElementAt(insertionPoint, RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Merge the leftovers back in to mRanges
|
|
if (!mRanges.InsertElementsAt(startIndex, temp))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
for (uint32_t i = 0; i < temp.Length(); ++i) {
|
|
temp[i].mRange->SetSelection(this);
|
|
}
|
|
|
|
*aOutIndex = startIndex + insertionPoint;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::RemoveItem(nsRange* aItem)
|
|
{
|
|
if (!aItem)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// Find the range's index & remove it. We could use FindInsertionPoint to
|
|
// get O(log n) time, but that requires many expensive DOM comparisons.
|
|
// For even several thousand items, this is probably faster because the
|
|
// comparisons are so fast.
|
|
int32_t idx = -1;
|
|
uint32_t i;
|
|
for (i = 0; i < mRanges.Length(); i ++) {
|
|
if (mRanges[i].mRange == aItem) {
|
|
idx = (int32_t)i;
|
|
break;
|
|
}
|
|
}
|
|
if (idx < 0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
mRanges.RemoveElementAt(idx);
|
|
aItem->SetSelection(nullptr);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::RemoveCollapsedRanges()
|
|
{
|
|
uint32_t i = 0;
|
|
while (i < mRanges.Length()) {
|
|
if (mRanges[i].mRange->Collapsed()) {
|
|
nsresult rv = RemoveItem(mRanges[i].mRange);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
++i;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::Clear(nsPresContext* aPresContext)
|
|
{
|
|
setAnchorFocusRange(-1);
|
|
|
|
for (uint32_t i = 0; i < mRanges.Length(); ++i) {
|
|
mRanges[i].mRange->SetSelection(nullptr);
|
|
selectFrames(aPresContext, mRanges[i].mRange, false);
|
|
}
|
|
mRanges.Clear();
|
|
|
|
// Reset direction so for more dependable table selection range handling
|
|
SetDirection(eDirNext);
|
|
|
|
// If this was an ATTENTION selection, change it back to normal now
|
|
if (mFrameSelection &&
|
|
mFrameSelection->GetDisplaySelection() ==
|
|
nsISelectionController::SELECTION_ATTENTION) {
|
|
mFrameSelection->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetType(int16_t* aType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aType);
|
|
*aType = ToRawSelectionType(Type());
|
|
return NS_OK;
|
|
}
|
|
|
|
// RangeMatches*Point
|
|
//
|
|
// Compares the range beginning or ending point, and returns true if it
|
|
// exactly matches the given DOM point.
|
|
|
|
static inline bool
|
|
RangeMatchesBeginPoint(nsRange* aRange, nsINode* aNode, int32_t aOffset)
|
|
{
|
|
return aRange->GetStartParent() == aNode && aRange->StartOffset() == aOffset;
|
|
}
|
|
|
|
static inline bool
|
|
RangeMatchesEndPoint(nsRange* aRange, nsINode* aNode, int32_t aOffset)
|
|
{
|
|
return aRange->GetEndParent() == aNode && aRange->EndOffset() == aOffset;
|
|
}
|
|
|
|
// Selection::EqualsRangeAtPoint
|
|
//
|
|
// Utility method for checking equivalence of two ranges.
|
|
|
|
bool
|
|
Selection::EqualsRangeAtPoint(
|
|
nsINode* aBeginNode, int32_t aBeginOffset,
|
|
nsINode* aEndNode, int32_t aEndOffset,
|
|
int32_t aRangeIndex)
|
|
{
|
|
if (aRangeIndex >=0 && aRangeIndex < (int32_t) mRanges.Length()) {
|
|
nsRange* range = mRanges[aRangeIndex].mRange;
|
|
if (RangeMatchesBeginPoint(range, aBeginNode, aBeginOffset) &&
|
|
RangeMatchesEndPoint(range, aEndNode, aEndOffset))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Selection::GetRangesForInterval
|
|
//
|
|
// XPCOM wrapper for the nsTArray version
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetRangesForInterval(nsIDOMNode* aBeginNode, int32_t aBeginOffset,
|
|
nsIDOMNode* aEndNode, int32_t aEndOffset,
|
|
bool aAllowAdjacent,
|
|
uint32_t* aResultCount,
|
|
nsIDOMRange*** aResults)
|
|
{
|
|
if (!aBeginNode || ! aEndNode || ! aResultCount || ! aResults)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aResultCount = 0;
|
|
*aResults = nullptr;
|
|
|
|
nsTArray<RefPtr<nsRange>> results;
|
|
ErrorResult result;
|
|
nsCOMPtr<nsINode> beginNode = do_QueryInterface(aBeginNode);
|
|
nsCOMPtr<nsINode> endNode = do_QueryInterface(aEndNode);
|
|
NS_ENSURE_TRUE(beginNode && endNode, NS_ERROR_NULL_POINTER);
|
|
GetRangesForInterval(*beginNode, aBeginOffset, *endNode, aEndOffset,
|
|
aAllowAdjacent, results, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
*aResultCount = results.Length();
|
|
if (*aResultCount == 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
*aResults = static_cast<nsIDOMRange**>
|
|
(moz_xmalloc(sizeof(nsIDOMRange*) * *aResultCount));
|
|
NS_ENSURE_TRUE(*aResults, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
for (uint32_t i = 0; i < *aResultCount; i++) {
|
|
(*aResults)[i] = results[i].forget().take();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
void
|
|
Selection::GetRangesForInterval(nsINode& aBeginNode, int32_t aBeginOffset,
|
|
nsINode& aEndNode, int32_t aEndOffset,
|
|
bool aAllowAdjacent,
|
|
nsTArray<RefPtr<nsRange>>& aReturn,
|
|
mozilla::ErrorResult& aRv)
|
|
{
|
|
nsTArray<nsRange*> results;
|
|
nsresult rv = GetRangesForIntervalArray(&aBeginNode, aBeginOffset,
|
|
&aEndNode, aEndOffset,
|
|
aAllowAdjacent, &results);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
aReturn.SetLength(results.Length());
|
|
for (uint32_t i = 0; i < results.Length(); ++i) {
|
|
aReturn[i] = results[i]; // AddRefs
|
|
}
|
|
}
|
|
|
|
// Selection::GetRangesForIntervalArray
|
|
//
|
|
// Fills a nsTArray with the ranges overlapping the range specified by
|
|
// the given endpoints. Ranges in the selection exactly adjacent to the
|
|
// input range are not returned unless aAllowAdjacent is set.
|
|
//
|
|
// For example, if the following ranges were in the selection
|
|
// (assume everything is within the same node)
|
|
//
|
|
// Start Offset: 0 2 7 9
|
|
// End Offset: 2 5 9 10
|
|
//
|
|
// and passed aBeginOffset of 2 and aEndOffset of 9, then with
|
|
// aAllowAdjacent set, all the ranges should be returned. If
|
|
// aAllowAdjacent was false, the ranges [2, 5] and [7, 9] only
|
|
// should be returned
|
|
//
|
|
// Now that overlapping ranges are disallowed, there can be a maximum of
|
|
// 2 adjacent ranges
|
|
|
|
nsresult
|
|
Selection::GetRangesForIntervalArray(nsINode* aBeginNode, int32_t aBeginOffset,
|
|
nsINode* aEndNode, int32_t aEndOffset,
|
|
bool aAllowAdjacent,
|
|
nsTArray<nsRange*>* aRanges)
|
|
{
|
|
aRanges->Clear();
|
|
int32_t startIndex, endIndex;
|
|
nsresult res = GetIndicesForInterval(aBeginNode, aBeginOffset,
|
|
aEndNode, aEndOffset, aAllowAdjacent,
|
|
&startIndex, &endIndex);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
|
|
if (startIndex == -1 || endIndex == -1)
|
|
return NS_OK;
|
|
|
|
for (int32_t i = startIndex; i < endIndex; i++) {
|
|
if (!aRanges->AppendElement(mRanges[i].mRange))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Selection::GetIndicesForInterval
|
|
//
|
|
// Works on the same principle as GetRangesForIntervalArray above, however
|
|
// instead this returns the indices into mRanges between which the
|
|
// overlapping ranges lie.
|
|
|
|
nsresult
|
|
Selection::GetIndicesForInterval(nsINode* aBeginNode, int32_t aBeginOffset,
|
|
nsINode* aEndNode, int32_t aEndOffset,
|
|
bool aAllowAdjacent,
|
|
int32_t* aStartIndex, int32_t* aEndIndex)
|
|
{
|
|
int32_t startIndex;
|
|
int32_t endIndex;
|
|
|
|
if (!aStartIndex)
|
|
aStartIndex = &startIndex;
|
|
if (!aEndIndex)
|
|
aEndIndex = &endIndex;
|
|
|
|
*aStartIndex = -1;
|
|
*aEndIndex = -1;
|
|
|
|
if (mRanges.Length() == 0)
|
|
return NS_OK;
|
|
|
|
bool intervalIsCollapsed = aBeginNode == aEndNode &&
|
|
aBeginOffset == aEndOffset;
|
|
|
|
// Ranges that end before the given interval and begin after the given
|
|
// interval can be discarded
|
|
int32_t endsBeforeIndex;
|
|
if (NS_FAILED(FindInsertionPoint(&mRanges, aEndNode, aEndOffset,
|
|
&CompareToRangeStart,
|
|
&endsBeforeIndex))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (endsBeforeIndex == 0) {
|
|
nsRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
|
|
// If the interval is strictly before the range at index 0, we can optimize
|
|
// by returning now - all ranges start after the given interval
|
|
if (!RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset))
|
|
return NS_OK;
|
|
|
|
// We now know that the start point of mRanges[0].mRange equals the end of
|
|
// the interval. Thus, when aAllowadjacent is true, the caller is always
|
|
// interested in this range. However, when excluding adjacencies, we must
|
|
// remember to include the range when both it and the given interval are
|
|
// collapsed to the same point
|
|
if (!aAllowAdjacent && !(endRange->Collapsed() && intervalIsCollapsed))
|
|
return NS_OK;
|
|
}
|
|
*aEndIndex = endsBeforeIndex;
|
|
|
|
int32_t beginsAfterIndex;
|
|
if (NS_FAILED(FindInsertionPoint(&mRanges, aBeginNode, aBeginOffset,
|
|
&CompareToRangeEnd,
|
|
&beginsAfterIndex))) {
|
|
return NS_OK;
|
|
}
|
|
if (beginsAfterIndex == (int32_t) mRanges.Length())
|
|
return NS_OK; // optimization: all ranges are strictly before us
|
|
|
|
if (aAllowAdjacent) {
|
|
// At this point, one of the following holds:
|
|
// endsBeforeIndex == mRanges.Length(),
|
|
// endsBeforeIndex points to a range whose start point does not equal the
|
|
// given interval's start point
|
|
// endsBeforeIndex points to a range whose start point equals the given
|
|
// interval's start point
|
|
// In the final case, there can be two such ranges, a collapsed range, and
|
|
// an adjacent range (they will appear in mRanges in that order). For this
|
|
// final case, we need to increment endsBeforeIndex, until one of the
|
|
// first two possibilites hold
|
|
while (endsBeforeIndex < (int32_t) mRanges.Length()) {
|
|
nsRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
if (!RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset))
|
|
break;
|
|
endsBeforeIndex++;
|
|
}
|
|
|
|
// Likewise, one of the following holds:
|
|
// beginsAfterIndex == 0,
|
|
// beginsAfterIndex points to a range whose end point does not equal
|
|
// the given interval's end point
|
|
// beginsOnOrAfter points to a range whose end point equals the given
|
|
// interval's end point
|
|
// In the final case, there can be two such ranges, an adjacent range, and
|
|
// a collapsed range (they will appear in mRanges in that order). For this
|
|
// final case, we only need to take action if both those ranges exist, and
|
|
// we are pointing to the collapsed range - we need to point to the
|
|
// adjacent range
|
|
nsRange* beginRange = mRanges[beginsAfterIndex].mRange;
|
|
if (beginsAfterIndex > 0 && beginRange->Collapsed() &&
|
|
RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset)) {
|
|
beginRange = mRanges[beginsAfterIndex - 1].mRange;
|
|
if (RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset))
|
|
beginsAfterIndex--;
|
|
}
|
|
} else {
|
|
// See above for the possibilities at this point. The only case where we
|
|
// need to take action is when the range at beginsAfterIndex ends on
|
|
// the given interval's start point, but that range isn't collapsed (a
|
|
// collapsed range should be included in the returned results).
|
|
nsRange* beginRange = mRanges[beginsAfterIndex].mRange;
|
|
if (RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset) &&
|
|
!beginRange->Collapsed())
|
|
beginsAfterIndex++;
|
|
|
|
// Again, see above for the meaning of endsBeforeIndex at this point.
|
|
// In particular, endsBeforeIndex may point to a collaped range which
|
|
// represents the point at the end of the interval - this range should be
|
|
// included
|
|
if (endsBeforeIndex < (int32_t) mRanges.Length()) {
|
|
nsRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
if (RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset) &&
|
|
endRange->Collapsed())
|
|
endsBeforeIndex++;
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(beginsAfterIndex <= endsBeforeIndex,
|
|
"Is mRanges not ordered?");
|
|
NS_ENSURE_STATE(beginsAfterIndex <= endsBeforeIndex);
|
|
|
|
*aStartIndex = beginsAfterIndex;
|
|
*aEndIndex = endsBeforeIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetPrimaryFrameForAnchorNode(nsIFrame** aReturnFrame)
|
|
{
|
|
if (!aReturnFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
int32_t frameOffset = 0;
|
|
*aReturnFrame = 0;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(GetAnchorNode());
|
|
if (content && mFrameSelection)
|
|
{
|
|
*aReturnFrame = mFrameSelection->
|
|
GetFrameForNodeOffset(content, AnchorOffset(),
|
|
mFrameSelection->GetHint(), &frameOffset);
|
|
if (*aReturnFrame)
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetPrimaryFrameForFocusNode(nsIFrame** aReturnFrame,
|
|
int32_t* aOffsetUsed,
|
|
bool aVisual)
|
|
{
|
|
if (!aReturnFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(GetFocusNode());
|
|
if (!content || !mFrameSelection)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
int32_t frameOffset = 0;
|
|
*aReturnFrame = 0;
|
|
if (!aOffsetUsed)
|
|
aOffsetUsed = &frameOffset;
|
|
|
|
CaretAssociationHint hint = mFrameSelection->GetHint();
|
|
|
|
if (aVisual) {
|
|
nsBidiLevel caretBidiLevel = mFrameSelection->GetCaretBidiLevel();
|
|
|
|
return nsCaret::GetCaretFrameForNodeOffset(mFrameSelection,
|
|
content, FocusOffset(), hint, caretBidiLevel, aReturnFrame, aOffsetUsed);
|
|
}
|
|
|
|
*aReturnFrame = mFrameSelection->
|
|
GetFrameForNodeOffset(content, FocusOffset(),
|
|
hint, aOffsetUsed);
|
|
if (!*aReturnFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//select all content children of aContent
|
|
nsresult
|
|
Selection::SelectAllFramesForContent(nsIContentIterator* aInnerIter,
|
|
nsIContent* aContent,
|
|
bool aSelected)
|
|
{
|
|
nsresult result = aInnerIter->Init(aContent);
|
|
nsIFrame *frame;
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
// First select frame of content passed in
|
|
frame = aContent->GetPrimaryFrame();
|
|
if (frame && frame->GetType() == nsGkAtoms::textFrame) {
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
textFrame->SetSelectedRange(0, aContent->GetText()->GetLength(),
|
|
aSelected, mSelectionType);
|
|
}
|
|
// Now iterated through the child frames and set them
|
|
while (!aInnerIter->IsDone()) {
|
|
nsCOMPtr<nsIContent> innercontent =
|
|
do_QueryInterface(aInnerIter->GetCurrentNode());
|
|
|
|
frame = innercontent->GetPrimaryFrame();
|
|
if (frame) {
|
|
if (frame->GetType() == nsGkAtoms::textFrame) {
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
textFrame->SetSelectedRange(0, innercontent->GetText()->GetLength(),
|
|
aSelected, mSelectionType);
|
|
} else {
|
|
frame->InvalidateFrameSubtree(); // frame continuations?
|
|
}
|
|
}
|
|
|
|
aInnerIter->Next();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
/**
|
|
* The idea of this helper method is to select or deselect "top to bottom",
|
|
* traversing through the frames
|
|
*/
|
|
nsresult
|
|
Selection::selectFrames(nsPresContext* aPresContext, nsRange* aRange,
|
|
bool aSelect)
|
|
{
|
|
if (!mFrameSelection || !aPresContext || !aPresContext->GetPresShell()) {
|
|
// nothing to do
|
|
return NS_OK;
|
|
}
|
|
MOZ_ASSERT(aRange);
|
|
|
|
if (mFrameSelection->GetTableCellSelection()) {
|
|
nsINode* node = aRange->GetCommonAncestor();
|
|
nsIFrame* frame = node->IsContent() ? node->AsContent()->GetPrimaryFrame()
|
|
: aPresContext->FrameManager()->GetRootFrame();
|
|
if (frame) {
|
|
frame->InvalidateFrameSubtree();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContentIterator> iter = NS_NewContentSubtreeIterator();
|
|
iter->Init(aRange);
|
|
|
|
// Loop through the content iterator for each content node; for each text
|
|
// node, call SetSelected on it:
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aRange->GetStartParent());
|
|
if (!content) {
|
|
// Don't warn, bug 1055722
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// We must call first one explicitly
|
|
if (content->IsNodeOfType(nsINode::eTEXT)) {
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
// The frame could be an SVG text frame, in which case we'll ignore it.
|
|
if (frame && frame->GetType() == nsGkAtoms::textFrame) {
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
uint32_t startOffset = aRange->StartOffset();
|
|
uint32_t endOffset;
|
|
if (aRange->GetEndParent() == content) {
|
|
endOffset = aRange->EndOffset();
|
|
} else {
|
|
endOffset = content->Length();
|
|
}
|
|
textFrame->SetSelectedRange(startOffset, endOffset, aSelect,
|
|
mSelectionType);
|
|
}
|
|
}
|
|
|
|
iter->First();
|
|
nsCOMPtr<nsIContentIterator> inneriter = NS_NewContentIterator();
|
|
for (iter->First(); !iter->IsDone(); iter->Next()) {
|
|
content = do_QueryInterface(iter->GetCurrentNode());
|
|
SelectAllFramesForContent(inneriter, content, aSelect);
|
|
}
|
|
|
|
// We must now do the last one if it is not the same as the first
|
|
if (aRange->GetEndParent() != aRange->GetStartParent()) {
|
|
nsresult res;
|
|
content = do_QueryInterface(aRange->GetEndParent(), &res);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
NS_ENSURE_TRUE(content, res);
|
|
|
|
if (content->IsNodeOfType(nsINode::eTEXT)) {
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
// The frame could be an SVG text frame, in which case we'll ignore it.
|
|
if (frame && frame->GetType() == nsGkAtoms::textFrame) {
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
textFrame->SetSelectedRange(0, aRange->EndOffset(), aSelect,
|
|
mSelectionType);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// Selection::LookUpSelection
|
|
//
|
|
// This function is called when a node wants to know where the selection is
|
|
// over itself.
|
|
//
|
|
// Usually, this is called when we already know there is a selection over
|
|
// the node in question, and we only need to find the boundaries of it on
|
|
// that node. This is when slowCheck is false--a strict test is not needed.
|
|
// Other times, the caller has no idea, and wants us to test everything,
|
|
// so we are supposed to determine whether there is a selection over the
|
|
// node at all.
|
|
//
|
|
// A previous version of this code used this flag to do less work when
|
|
// inclusion was already known (slowCheck=false). However, our tree
|
|
// structure allows us to quickly determine ranges overlapping the node,
|
|
// so we just ignore the slowCheck flag and do the full test every time.
|
|
//
|
|
// PERFORMANCE: a common case is that we are doing a fast check with exactly
|
|
// one range in the selection. In this case, this function is slower than
|
|
// brute force because of the overhead of checking the tree. We can optimize
|
|
// this case to make it faster by doing the same thing the previous version
|
|
// of this function did in the case of 1 range. This would also mean that
|
|
// the aSlowCheck flag would have meaning again.
|
|
|
|
NS_IMETHODIMP
|
|
Selection::LookUpSelection(nsIContent* aContent, int32_t aContentOffset,
|
|
int32_t aContentLength,
|
|
SelectionDetails** aReturnDetails,
|
|
SelectionType aSelectionType,
|
|
bool aSlowCheck)
|
|
{
|
|
nsresult rv;
|
|
if (!aContent || ! aReturnDetails)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// it is common to have no ranges, to optimize that
|
|
if (mRanges.Length() == 0)
|
|
return NS_OK;
|
|
|
|
nsTArray<nsRange*> overlappingRanges;
|
|
rv = GetRangesForIntervalArray(aContent, aContentOffset,
|
|
aContent, aContentOffset + aContentLength,
|
|
false,
|
|
&overlappingRanges);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (overlappingRanges.Length() == 0)
|
|
return NS_OK;
|
|
|
|
for (uint32_t i = 0; i < overlappingRanges.Length(); i++) {
|
|
nsRange* range = overlappingRanges[i];
|
|
nsINode* startNode = range->GetStartParent();
|
|
nsINode* endNode = range->GetEndParent();
|
|
int32_t startOffset = range->StartOffset();
|
|
int32_t endOffset = range->EndOffset();
|
|
|
|
int32_t start = -1, end = -1;
|
|
if (startNode == aContent && endNode == aContent) {
|
|
if (startOffset < (aContentOffset + aContentLength) &&
|
|
endOffset > aContentOffset) {
|
|
// this range is totally inside the requested content range
|
|
start = std::max(0, startOffset - aContentOffset);
|
|
end = std::min(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
// otherwise, range is inside the requested node, but does not intersect
|
|
// the requested content range, so ignore it
|
|
} else if (startNode == aContent) {
|
|
if (startOffset < (aContentOffset + aContentLength)) {
|
|
// the beginning of the range is inside the requested node, but the
|
|
// end is outside, select everything from there to the end
|
|
start = std::max(0, startOffset - aContentOffset);
|
|
end = aContentLength;
|
|
}
|
|
} else if (endNode == aContent) {
|
|
if (endOffset > aContentOffset) {
|
|
// the end of the range is inside the requested node, but the beginning
|
|
// is outside, select everything from the beginning to there
|
|
start = 0;
|
|
end = std::min(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
} else {
|
|
// this range does not begin or end in the requested node, but since
|
|
// GetRangesForInterval returned this range, we know it overlaps.
|
|
// Therefore, this node is enclosed in the range, and we select all
|
|
// of it.
|
|
start = 0;
|
|
end = aContentLength;
|
|
}
|
|
if (start < 0)
|
|
continue; // the ranges do not overlap the input range
|
|
|
|
SelectionDetails* details = new SelectionDetails;
|
|
|
|
details->mNext = *aReturnDetails;
|
|
details->mStart = start;
|
|
details->mEnd = end;
|
|
details->mSelectionType = aSelectionType;
|
|
RangeData *rd = FindRangeData(range);
|
|
if (rd) {
|
|
details->mTextRangeStyle = rd->mTextRangeStyle;
|
|
}
|
|
*aReturnDetails = details;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::Repaint(nsPresContext* aPresContext)
|
|
{
|
|
int32_t arrCount = (int32_t)mRanges.Length();
|
|
|
|
if (arrCount < 1)
|
|
return NS_OK;
|
|
|
|
int32_t i;
|
|
|
|
for (i = 0; i < arrCount; i++)
|
|
{
|
|
nsresult rv = selectFrames(aPresContext, mRanges[i].mRange, true);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetCanCacheFrameOffset(bool* aCanCacheFrameOffset)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCanCacheFrameOffset);
|
|
|
|
if (mCachedOffsetForFrame)
|
|
*aCanCacheFrameOffset = mCachedOffsetForFrame->mCanCacheFrameOffset;
|
|
else
|
|
*aCanCacheFrameOffset = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::SetCanCacheFrameOffset(bool aCanCacheFrameOffset)
|
|
{
|
|
if (!mCachedOffsetForFrame) {
|
|
mCachedOffsetForFrame = new CachedOffsetForFrame;
|
|
}
|
|
|
|
mCachedOffsetForFrame->mCanCacheFrameOffset = aCanCacheFrameOffset;
|
|
|
|
// clean up cached frame when turn off cache
|
|
// fix bug 207936
|
|
if (!aCanCacheFrameOffset) {
|
|
mCachedOffsetForFrame->mLastCaretFrame = nullptr;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetCachedFrameOffset(nsIFrame* aFrame, int32_t inOffset,
|
|
nsPoint& aPoint)
|
|
{
|
|
if (!mCachedOffsetForFrame) {
|
|
mCachedOffsetForFrame = new CachedOffsetForFrame;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
if (mCachedOffsetForFrame->mCanCacheFrameOffset &&
|
|
mCachedOffsetForFrame->mLastCaretFrame &&
|
|
(aFrame == mCachedOffsetForFrame->mLastCaretFrame) &&
|
|
(inOffset == mCachedOffsetForFrame->mLastContentOffset))
|
|
{
|
|
// get cached frame offset
|
|
aPoint = mCachedOffsetForFrame->mCachedFrameOffset;
|
|
}
|
|
else
|
|
{
|
|
// Recalculate frame offset and cache it. Don't cache a frame offset if
|
|
// GetPointFromOffset fails, though.
|
|
rv = aFrame->GetPointFromOffset(inOffset, &aPoint);
|
|
if (NS_SUCCEEDED(rv) && mCachedOffsetForFrame->mCanCacheFrameOffset) {
|
|
mCachedOffsetForFrame->mCachedFrameOffset = aPoint;
|
|
mCachedOffsetForFrame->mLastCaretFrame = aFrame;
|
|
mCachedOffsetForFrame->mLastContentOffset = inOffset;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetAncestorLimiter(nsIContent** aContent)
|
|
{
|
|
if (mFrameSelection) {
|
|
nsCOMPtr<nsIContent> c = mFrameSelection->GetAncestorLimiter();
|
|
c.forget(aContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::SetAncestorLimiter(nsIContent* aContent)
|
|
{
|
|
if (mFrameSelection)
|
|
mFrameSelection->SetAncestorLimiter(aContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
RangeData*
|
|
Selection::FindRangeData(nsIDOMRange* aRange)
|
|
{
|
|
NS_ENSURE_TRUE(aRange, nullptr);
|
|
for (uint32_t i = 0; i < mRanges.Length(); i++) {
|
|
if (mRanges[i].mRange == aRange)
|
|
return &mRanges[i];
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::SetTextRangeStyle(nsIDOMRange* aRange,
|
|
const TextRangeStyle& aTextRangeStyle)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aRange);
|
|
RangeData *rd = FindRangeData(aRange);
|
|
if (rd) {
|
|
rd->mTextRangeStyle = aTextRangeStyle;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::StartAutoScrollTimer(nsIFrame* aFrame, nsPoint& aPoint,
|
|
uint32_t aDelay)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Need a frame");
|
|
|
|
nsresult result;
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
if (!mAutoScrollTimer)
|
|
{
|
|
mAutoScrollTimer = new nsAutoScrollTimer();
|
|
|
|
result = mAutoScrollTimer->Init(mFrameSelection, this);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
}
|
|
|
|
result = mAutoScrollTimer->SetDelay(aDelay);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
return DoAutoScroll(aFrame, aPoint);
|
|
}
|
|
|
|
nsresult
|
|
Selection::StopAutoScrollTimer()
|
|
{
|
|
if (mAutoScrollTimer) {
|
|
return mAutoScrollTimer->Stop();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::DoAutoScroll(nsIFrame* aFrame, nsPoint& aPoint)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Need a frame");
|
|
|
|
if (mAutoScrollTimer)
|
|
(void)mAutoScrollTimer->Stop();
|
|
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
nsCOMPtr<nsIPresShell> shell = presContext->PresShell();
|
|
nsRootPresContext* rootPC = presContext->GetRootPresContext();
|
|
if (!rootPC)
|
|
return NS_OK;
|
|
nsIFrame* rootmostFrame = rootPC->PresShell()->FrameManager()->GetRootFrame();
|
|
nsWeakFrame weakRootFrame(rootmostFrame);
|
|
nsWeakFrame weakFrame(aFrame);
|
|
// Get the point relative to the root most frame because the scroll we are
|
|
// about to do will change the coordinates of aFrame.
|
|
nsPoint globalPoint = aPoint + aFrame->GetOffsetToCrossDoc(rootmostFrame);
|
|
|
|
bool done = false;
|
|
bool didScroll;
|
|
while (true) {
|
|
didScroll = shell->ScrollFrameRectIntoView(
|
|
aFrame, nsRect(aPoint, nsSize(0, 0)),
|
|
nsIPresShell::ScrollAxis(), nsIPresShell::ScrollAxis(),
|
|
0);
|
|
if (!weakFrame || !weakRootFrame) {
|
|
return NS_OK;
|
|
}
|
|
if (!didScroll && !done) {
|
|
// If aPoint is at the screen edge then try to scroll anyway, once.
|
|
RefPtr<nsDeviceContext> dx = shell->GetViewManager()->GetDeviceContext();
|
|
nsRect screen;
|
|
dx->GetRect(screen);
|
|
nsPoint screenPoint = globalPoint +
|
|
rootmostFrame->GetScreenRectInAppUnits().TopLeft();
|
|
nscoord onePx = nsPresContext::AppUnitsPerCSSPixel();
|
|
nscoord scrollAmount = 10 * onePx;
|
|
if (std::abs(screen.x - screenPoint.x) <= onePx) {
|
|
aPoint.x -= scrollAmount;
|
|
} else if (std::abs(screen.XMost() - screenPoint.x) <= onePx) {
|
|
aPoint.x += scrollAmount;
|
|
} else if (std::abs(screen.y - screenPoint.y) <= onePx) {
|
|
aPoint.y -= scrollAmount;
|
|
} else if (std::abs(screen.YMost() - screenPoint.y) <= onePx) {
|
|
aPoint.y += scrollAmount;
|
|
} else {
|
|
break;
|
|
}
|
|
done = true;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Start the AutoScroll timer if necessary.
|
|
if (didScroll && mAutoScrollTimer) {
|
|
nsPoint presContextPoint = globalPoint -
|
|
shell->FrameManager()->GetRootFrame()->GetOffsetToCrossDoc(rootmostFrame);
|
|
mAutoScrollTimer->Start(presContext, presContextPoint);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/** RemoveAllRanges zeroes the selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::RemoveAllRanges()
|
|
{
|
|
ErrorResult result;
|
|
RemoveAllRanges(result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::RemoveAllRanges(ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection)
|
|
return; // nothing to do
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
nsresult result = Clear(presContext);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
|
|
// Turn off signal for table selection
|
|
mFrameSelection->ClearTableCellSelection();
|
|
|
|
result = mFrameSelection->NotifySelectionListeners(GetType());
|
|
// Also need to notify the frames!
|
|
// PresShell::CharacterDataChanged should do that on DocumentChanged
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
}
|
|
}
|
|
|
|
/** AddRange adds the specified range to the selection
|
|
* @param aRange is the range to be added
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::AddRange(nsIDOMRange* aDOMRange)
|
|
{
|
|
if (!aDOMRange) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsRange* range = static_cast<nsRange*>(aDOMRange);
|
|
ErrorResult result;
|
|
AddRange(*range, result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::AddRange(nsRange& aRange, ErrorResult& aRv)
|
|
{
|
|
// This inserts a table cell range in proper document order
|
|
// and returns NS_OK if range doesn't contain just one table cell
|
|
bool didAddRange;
|
|
int32_t rangeIndex;
|
|
nsresult result = addTableCellRange(&aRange, &didAddRange, &rangeIndex);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
|
|
if (!didAddRange) {
|
|
result = AddItem(&aRange, &rangeIndex);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (rangeIndex < 0) {
|
|
return;
|
|
}
|
|
|
|
setAnchorFocusRange(rangeIndex);
|
|
|
|
// Make sure the caret appears on the next line, if at a newline
|
|
if (mSelectionType == SelectionType::eNormal) {
|
|
SetInterlinePosition(true);
|
|
}
|
|
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
selectFrames(presContext, &aRange, true);
|
|
|
|
if (!mFrameSelection)
|
|
return;//nothing to do
|
|
|
|
result = mFrameSelection->NotifySelectionListeners(GetType());
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
}
|
|
}
|
|
|
|
// Selection::RemoveRange
|
|
//
|
|
// Removes the given range from the selection. The tricky part is updating
|
|
// the flags on the frames that indicate whether they have a selection or
|
|
// not. There could be several selection ranges on the frame, and clearing
|
|
// the bit would cause the selection to not be drawn, even when there is
|
|
// another range on the frame (bug 346185).
|
|
//
|
|
// We therefore find any ranges that intersect the same nodes as the range
|
|
// being removed, and cause them to set the selected bits back on their
|
|
// selected frames after we've cleared the bit from ours.
|
|
|
|
nsresult
|
|
Selection::RemoveRange(nsIDOMRange* aDOMRange)
|
|
{
|
|
if (!aDOMRange) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
nsRange* range = static_cast<nsRange*>(aDOMRange);
|
|
ErrorResult result;
|
|
RemoveRange(*range, result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::RemoveRange(nsRange& aRange, ErrorResult& aRv)
|
|
{
|
|
nsresult rv = RemoveItem(&aRange);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
nsINode* beginNode = aRange.GetStartParent();
|
|
nsINode* endNode = aRange.GetEndParent();
|
|
|
|
if (!beginNode || !endNode) {
|
|
// Detached range; nothing else to do here.
|
|
return;
|
|
}
|
|
|
|
// find out the length of the end node, so we can select all of it
|
|
int32_t beginOffset, endOffset;
|
|
if (endNode->IsNodeOfType(nsINode::eTEXT)) {
|
|
// Get the length of the text. We can't just use the offset because
|
|
// another range could be touching this text node but not intersect our
|
|
// range.
|
|
beginOffset = 0;
|
|
endOffset = static_cast<nsIContent*>(endNode)->TextLength();
|
|
} else {
|
|
// For non-text nodes, the given offsets should be sufficient.
|
|
beginOffset = aRange.StartOffset();
|
|
endOffset = aRange.EndOffset();
|
|
}
|
|
|
|
// clear the selected bit from the removed range's frames
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
selectFrames(presContext, &aRange, false);
|
|
|
|
// add back the selected bit for each range touching our nodes
|
|
nsTArray<nsRange*> affectedRanges;
|
|
rv = GetRangesForIntervalArray(beginNode, beginOffset,
|
|
endNode, endOffset,
|
|
true, &affectedRanges);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
for (uint32_t i = 0; i < affectedRanges.Length(); i++) {
|
|
selectFrames(presContext, affectedRanges[i], true);
|
|
}
|
|
|
|
int32_t cnt = mRanges.Length();
|
|
if (&aRange == mAnchorFocusRange) {
|
|
// Reset anchor to LAST range or clear it if there are no ranges.
|
|
setAnchorFocusRange(cnt - 1);
|
|
|
|
// When the selection is user-created it makes sense to scroll the range
|
|
// into view. The spell-check selection, however, is created and destroyed
|
|
// in the background. We don't want to scroll in this case or the view
|
|
// might appear to be moving randomly (bug 337871).
|
|
if (mSelectionType != SelectionType::eSpellCheck && cnt > 0) {
|
|
ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION);
|
|
}
|
|
}
|
|
|
|
if (!mFrameSelection)
|
|
return;//nothing to do
|
|
rv = mFrameSelection->NotifySelectionListeners(GetType());
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Collapse sets the whole selection to be one point.
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::Collapse(nsIDOMNode* aParentNode, int32_t aOffset)
|
|
{
|
|
nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
|
|
return Collapse(parentNode, aOffset);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::CollapseNative(nsINode* aParentNode, int32_t aOffset)
|
|
{
|
|
return Collapse(aParentNode, aOffset);
|
|
}
|
|
|
|
nsresult
|
|
Selection::Collapse(nsINode* aParentNode, int32_t aOffset)
|
|
{
|
|
if (!aParentNode)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
ErrorResult result;
|
|
Collapse(*aParentNode, static_cast<uint32_t>(aOffset), result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::Collapse(nsINode& aParentNode, uint32_t aOffset, ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED); // Can't do selection
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> kungfuDeathGrip = &aParentNode;
|
|
|
|
mFrameSelection->InvalidateDesiredPos();
|
|
if (!IsValidSelectionPoint(mFrameSelection, &aParentNode)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
nsresult result;
|
|
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
if (!presContext || presContext->Document() != aParentNode.OwnerDoc()) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
// Delete all of the current ranges
|
|
Clear(presContext);
|
|
|
|
// Turn off signal for table selection
|
|
mFrameSelection->ClearTableCellSelection();
|
|
|
|
// Hack to display the caret on the right line (bug 1237236).
|
|
if (mFrameSelection->GetHint() != CARET_ASSOCIATE_AFTER &&
|
|
aParentNode.IsContent()) {
|
|
int32_t frameOffset;
|
|
nsTextFrame* f =
|
|
do_QueryFrame(nsCaret::GetFrameAndOffset(this, &aParentNode,
|
|
aOffset, &frameOffset));
|
|
if (f && f->IsAtEndOfLine() && f->HasSignificantTerminalNewline()) {
|
|
if ((aParentNode.AsContent() == f->GetContent() &&
|
|
f->GetContentEnd() == int32_t(aOffset)) ||
|
|
(&aParentNode == f->GetContent()->GetParentNode() &&
|
|
aParentNode.IndexOf(f->GetContent()) + 1 == int32_t(aOffset))) {
|
|
mFrameSelection->SetHint(CARET_ASSOCIATE_AFTER);
|
|
}
|
|
}
|
|
}
|
|
|
|
RefPtr<nsRange> range = new nsRange(&aParentNode);
|
|
result = range->SetEnd(&aParentNode, aOffset);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
result = range->SetStart(&aParentNode, aOffset);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG_SELECTION
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(&aParentNode);
|
|
nsCOMPtr<nsIDocument> doc = do_QueryInterface(&aParentNode);
|
|
printf ("Sel. Collapse to %p %s %d\n", &aParentNode,
|
|
content ? nsAtomCString(content->NodeInfo()->NameAtom()).get()
|
|
: (doc ? "DOCUMENT" : "???"),
|
|
aOffset);
|
|
#endif
|
|
|
|
int32_t rangeIndex = -1;
|
|
result = AddItem(range, &rangeIndex);
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
return;
|
|
}
|
|
setAnchorFocusRange(0);
|
|
selectFrames(presContext, range, true);
|
|
result = mFrameSelection->NotifySelectionListeners(GetType());
|
|
if (NS_FAILED(result)) {
|
|
aRv.Throw(result);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sets the whole selection to be one point
|
|
* at the start of the current selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::CollapseToStart()
|
|
{
|
|
ErrorResult result;
|
|
CollapseToStart(result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::CollapseToStart(ErrorResult& aRv)
|
|
{
|
|
int32_t cnt;
|
|
nsresult rv = GetRangeCount(&cnt);
|
|
if (NS_FAILED(rv) || cnt <= 0) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
|
|
// Get the first range
|
|
nsRange* firstRange = mRanges[0].mRange;
|
|
if (!firstRange) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
if (mFrameSelection) {
|
|
int16_t reason = mFrameSelection->PopReason() | nsISelectionListener::COLLAPSETOSTART_REASON;
|
|
mFrameSelection->PostReason(reason);
|
|
}
|
|
nsINode* parent = firstRange->GetStartParent();
|
|
if (!parent) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
Collapse(*parent, firstRange->StartOffset(), aRv);
|
|
}
|
|
|
|
/*
|
|
* Sets the whole selection to be one point
|
|
* at the end of the current selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::CollapseToEnd()
|
|
{
|
|
ErrorResult result;
|
|
CollapseToEnd(result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::CollapseToEnd(ErrorResult& aRv)
|
|
{
|
|
int32_t cnt;
|
|
nsresult rv = GetRangeCount(&cnt);
|
|
if (NS_FAILED(rv) || cnt <= 0) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
|
|
// Get the last range
|
|
nsRange* lastRange = mRanges[cnt - 1].mRange;
|
|
if (!lastRange) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
if (mFrameSelection) {
|
|
int16_t reason = mFrameSelection->PopReason() | nsISelectionListener::COLLAPSETOEND_REASON;
|
|
mFrameSelection->PostReason(reason);
|
|
}
|
|
nsINode* parent = lastRange->GetEndParent();
|
|
if (!parent) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
Collapse(*parent, lastRange->EndOffset(), aRv);
|
|
}
|
|
|
|
/*
|
|
* IsCollapsed -- is the whole selection just one point, or unset?
|
|
*/
|
|
bool
|
|
Selection::IsCollapsed()
|
|
{
|
|
uint32_t cnt = mRanges.Length();
|
|
if (cnt == 0) {
|
|
return true;
|
|
}
|
|
|
|
if (cnt != 1) {
|
|
return false;
|
|
}
|
|
|
|
return mRanges[0].mRange->Collapsed();
|
|
}
|
|
|
|
/* virtual */
|
|
bool
|
|
Selection::Collapsed()
|
|
{
|
|
return IsCollapsed();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetIsCollapsed(bool* aIsCollapsed)
|
|
{
|
|
NS_ENSURE_TRUE(aIsCollapsed, NS_ERROR_NULL_POINTER);
|
|
|
|
*aIsCollapsed = IsCollapsed();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetRangeCount(int32_t* aRangeCount)
|
|
{
|
|
*aRangeCount = (int32_t)RangeCount();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::GetRangeAt(int32_t aIndex, nsIDOMRange** aReturn)
|
|
{
|
|
ErrorResult result;
|
|
*aReturn = GetRangeAt(aIndex, result);
|
|
NS_IF_ADDREF(*aReturn);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
nsRange*
|
|
Selection::GetRangeAt(uint32_t aIndex, ErrorResult& aRv)
|
|
{
|
|
nsRange* range = GetRangeAt(aIndex);
|
|
if (!range) {
|
|
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
return range;
|
|
}
|
|
|
|
nsRange*
|
|
Selection::GetRangeAt(int32_t aIndex)
|
|
{
|
|
RangeData empty(nullptr);
|
|
return mRanges.SafeElementAt(aIndex, empty).mRange;
|
|
}
|
|
|
|
/*
|
|
utility function
|
|
*/
|
|
nsresult
|
|
Selection::SetAnchorFocusToRange(nsRange* aRange)
|
|
{
|
|
NS_ENSURE_STATE(mAnchorFocusRange);
|
|
|
|
bool collapsed = Collapsed();
|
|
|
|
nsresult res = RemoveItem(mAnchorFocusRange);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
int32_t aOutIndex = -1;
|
|
res = AddItem(aRange, &aOutIndex, !collapsed);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
setAnchorFocusRange(aOutIndex);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::ReplaceAnchorFocusRange(nsRange* aRange)
|
|
{
|
|
NS_ENSURE_TRUE_VOID(mAnchorFocusRange);
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
if (presContext) {
|
|
selectFrames(presContext, mAnchorFocusRange, false);
|
|
SetAnchorFocusToRange(aRange);
|
|
selectFrames(presContext, mAnchorFocusRange, true);
|
|
}
|
|
}
|
|
|
|
void
|
|
Selection::AdjustAnchorFocusForMultiRange(nsDirection aDirection)
|
|
{
|
|
if (aDirection == mDirection) {
|
|
return;
|
|
}
|
|
SetDirection(aDirection);
|
|
|
|
if (RangeCount() <= 1) {
|
|
return;
|
|
}
|
|
|
|
nsRange* firstRange = GetRangeAt(0);
|
|
nsRange* lastRange = GetRangeAt(RangeCount() - 1);
|
|
|
|
if (mDirection == eDirPrevious) {
|
|
firstRange->SetIsGenerated(false);
|
|
lastRange->SetIsGenerated(true);
|
|
setAnchorFocusRange(0);
|
|
} else { // aDir == eDirNext
|
|
firstRange->SetIsGenerated(true);
|
|
lastRange->SetIsGenerated(false);
|
|
setAnchorFocusRange(RangeCount() - 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
Notes which might come in handy for extend:
|
|
|
|
We can tell the direction of the selection by asking for the anchors selection
|
|
if the begin is less than the end then we know the selection is to the "right".
|
|
else it is a backwards selection.
|
|
a = anchor
|
|
1 = old cursor
|
|
2 = new cursor
|
|
|
|
if (a <= 1 && 1 <=2) a,1,2 or (a1,2)
|
|
if (a < 2 && 1 > 2) a,2,1
|
|
if (1 < a && a <2) 1,a,2
|
|
if (a > 2 && 2 >1) 1,2,a
|
|
if (2 < a && a <1) 2,a,1
|
|
if (a > 1 && 1 >2) 2,1,a
|
|
then execute
|
|
a 1 2 select from 1 to 2
|
|
a 2 1 deselect from 2 to 1
|
|
1 a 2 deselect from 1 to a select from a to 2
|
|
1 2 a deselect from 1 to 2
|
|
2 1 a = continue selection from 2 to 1
|
|
*/
|
|
|
|
|
|
/*
|
|
* Extend extends the selection away from the anchor.
|
|
* We don't need to know the direction, because we always change the focus.
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::Extend(nsIDOMNode* aParentNode, int32_t aOffset)
|
|
{
|
|
nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
|
|
return Extend(parentNode, aOffset);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ExtendNative(nsINode* aParentNode, int32_t aOffset)
|
|
{
|
|
return Extend(aParentNode, aOffset);
|
|
}
|
|
|
|
nsresult
|
|
Selection::Extend(nsINode* aParentNode, int32_t aOffset)
|
|
{
|
|
if (!aParentNode)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
ErrorResult result;
|
|
Extend(*aParentNode, static_cast<uint32_t>(aOffset), result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::Extend(nsINode& aParentNode, uint32_t aOffset, ErrorResult& aRv)
|
|
{
|
|
// First, find the range containing the old focus point:
|
|
if (!mAnchorFocusRange) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
|
|
if (!mFrameSelection) {
|
|
aRv.Throw(NS_ERROR_NOT_INITIALIZED); // Can't do selection
|
|
return;
|
|
}
|
|
|
|
nsresult res;
|
|
if (!IsValidSelectionPoint(mFrameSelection, &aParentNode)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
if (!presContext || presContext->Document() != aParentNode.OwnerDoc()) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG_SELECTION
|
|
nsDirection oldDirection = GetDirection();
|
|
#endif
|
|
nsINode* anchorNode = GetAnchorNode();
|
|
nsINode* focusNode = GetFocusNode();
|
|
uint32_t anchorOffset = AnchorOffset();
|
|
uint32_t focusOffset = FocusOffset();
|
|
|
|
RefPtr<nsRange> range = mAnchorFocusRange->CloneRange();
|
|
|
|
nsINode* startNode = range->GetStartParent();
|
|
nsINode* endNode = range->GetEndParent();
|
|
int32_t startOffset = range->StartOffset();
|
|
int32_t endOffset = range->EndOffset();
|
|
|
|
//compare anchor to old cursor.
|
|
|
|
// We pass |disconnected| to the following ComparePoints calls in order
|
|
// to avoid assertions. ComparePoints returns 1 in the disconnected case
|
|
// and we can end up in various cases below, but it is assumed that in
|
|
// any of the cases we end up, the nsRange implementation will collapse
|
|
// the range to the new point because we can not make a valid range with
|
|
// a disconnected point. This means that whatever range is currently
|
|
// selected will be cleared.
|
|
bool disconnected = false;
|
|
bool shouldClearRange = false;
|
|
int32_t result1 = nsContentUtils::ComparePoints(anchorNode, anchorOffset,
|
|
focusNode, focusOffset,
|
|
&disconnected);
|
|
//compare old cursor to new cursor
|
|
shouldClearRange |= disconnected;
|
|
int32_t result2 = nsContentUtils::ComparePoints(focusNode, focusOffset,
|
|
&aParentNode, aOffset,
|
|
&disconnected);
|
|
//compare anchor to new cursor
|
|
shouldClearRange |= disconnected;
|
|
int32_t result3 = nsContentUtils::ComparePoints(anchorNode, anchorOffset,
|
|
&aParentNode, aOffset,
|
|
&disconnected);
|
|
|
|
// If the points are disconnected, the range will be collapsed below,
|
|
// resulting in a range that selects nothing.
|
|
if (shouldClearRange) {
|
|
// Repaint the current range with the selection removed.
|
|
selectFrames(presContext, range, false);
|
|
}
|
|
|
|
RefPtr<nsRange> difRange = new nsRange(&aParentNode);
|
|
if ((result1 == 0 && result3 < 0) || (result1 <= 0 && result2 < 0)){//a1,2 a,1,2
|
|
//select from 1 to 2 unless they are collapsed
|
|
range->SetEnd(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
SetDirection(eDirNext);
|
|
res = difRange->SetEnd(range->GetEndParent(), range->EndOffset());
|
|
nsresult tmp = difRange->SetStart(focusNode, focusOffset);
|
|
if (NS_FAILED(tmp)) {
|
|
res = tmp;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
selectFrames(presContext, difRange , true);
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
else if (result1 == 0 && result3 > 0){//2, a1
|
|
//select from 2 to 1a
|
|
SetDirection(eDirPrevious);
|
|
range->SetStart(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
selectFrames(presContext, range, true);
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
else if (result3 <= 0 && result2 >= 0) {//a,2,1 or a2,1 or a,21 or a21
|
|
//deselect from 2 to 1
|
|
res = difRange->SetEnd(focusNode, focusOffset);
|
|
difRange->SetStart(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
|
|
range->SetEnd(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
selectFrames(presContext, difRange, false); // deselect now
|
|
difRange->SetEnd(range->GetEndParent(), range->EndOffset());
|
|
selectFrames(presContext, difRange, true); // must reselect last node maybe more
|
|
}
|
|
else if (result1 >= 0 && result3 <= 0) {//1,a,2 or 1a,2 or 1,a2 or 1a2
|
|
if (GetDirection() == eDirPrevious){
|
|
res = range->SetStart(endNode, endOffset);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
SetDirection(eDirNext);
|
|
range->SetEnd(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
if (focusNode != anchorNode || focusOffset != anchorOffset) {//if collapsed diff dont do anything
|
|
res = difRange->SetStart(focusNode, focusOffset);
|
|
nsresult tmp = difRange->SetEnd(anchorNode, anchorOffset);
|
|
if (NS_FAILED(tmp)) {
|
|
res = tmp;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
//deselect from 1 to a
|
|
selectFrames(presContext, difRange , false);
|
|
}
|
|
else
|
|
{
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
//select from a to 2
|
|
selectFrames(presContext, range , true);
|
|
}
|
|
else if (result2 <= 0 && result3 >= 0) {//1,2,a or 12,a or 1,2a or 12a
|
|
//deselect from 1 to 2
|
|
difRange->SetEnd(aParentNode, aOffset, aRv);
|
|
res = difRange->SetStart(focusNode, focusOffset);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
SetDirection(eDirPrevious);
|
|
range->SetStart(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
selectFrames(presContext, difRange , false);
|
|
difRange->SetStart(range->GetStartParent(), range->StartOffset());
|
|
selectFrames(presContext, difRange, true);//must reselect last node
|
|
}
|
|
else if (result3 >= 0 && result1 <= 0) {//2,a,1 or 2a,1 or 2,a1 or 2a1
|
|
if (GetDirection() == eDirNext){
|
|
range->SetEnd(startNode, startOffset);
|
|
}
|
|
SetDirection(eDirPrevious);
|
|
range->SetStart(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
//deselect from a to 1
|
|
if (focusNode != anchorNode || focusOffset!= anchorOffset) {//if collapsed diff dont do anything
|
|
res = difRange->SetStart(anchorNode, anchorOffset);
|
|
nsresult tmp = difRange->SetEnd(focusNode, focusOffset);
|
|
if (NS_FAILED(tmp)) {
|
|
res = tmp;
|
|
}
|
|
tmp = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(tmp)) {
|
|
res = tmp;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
selectFrames(presContext, difRange, false);
|
|
}
|
|
else
|
|
{
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
//select from 2 to a
|
|
selectFrames(presContext, range , true);
|
|
}
|
|
else if (result2 >= 0 && result1 >= 0) {//2,1,a or 21,a or 2,1a or 21a
|
|
//select from 2 to 1
|
|
range->SetStart(aParentNode, aOffset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
SetDirection(eDirPrevious);
|
|
res = difRange->SetEnd(focusNode, focusOffset);
|
|
nsresult tmp = difRange->SetStart(range->GetStartParent(), range->StartOffset());
|
|
if (NS_FAILED(tmp)) {
|
|
res = tmp;
|
|
}
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
|
|
selectFrames(presContext, difRange, true);
|
|
res = SetAnchorFocusToRange(range);
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (mRanges.Length() > 1) {
|
|
for (size_t i = 0; i < mRanges.Length(); ++i) {
|
|
nsRange* range = mRanges[i].mRange;
|
|
MOZ_ASSERT(range->IsInSelection());
|
|
selectFrames(presContext, range, range->IsInSelection());
|
|
}
|
|
}
|
|
|
|
DEBUG_OUT_RANGE(range);
|
|
#ifdef DEBUG_SELECTION
|
|
if (GetDirection() != oldDirection) {
|
|
printf(" direction changed to %s\n",
|
|
GetDirection() == eDirNext? "eDirNext":"eDirPrevious");
|
|
}
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(&aParentNode);
|
|
printf ("Sel. Extend to %p %s %d\n", content.get(),
|
|
nsAtomCString(content->NodeInfo()->NameAtom()).get(), aOffset);
|
|
#endif
|
|
res = mFrameSelection->NotifySelectionListeners(GetType());
|
|
if (NS_FAILED(res)) {
|
|
aRv.Throw(res);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::SelectAllChildren(nsIDOMNode* aParentNode)
|
|
{
|
|
ErrorResult result;
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aParentNode);
|
|
NS_ENSURE_TRUE(node, NS_ERROR_INVALID_ARG);
|
|
SelectAllChildren(*node, result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::SelectAllChildren(nsINode& aNode, ErrorResult& aRv)
|
|
{
|
|
if (mFrameSelection) {
|
|
mFrameSelection->PostReason(nsISelectionListener::SELECTALL_REASON);
|
|
}
|
|
SelectionBatcher batch(this);
|
|
|
|
Collapse(aNode, 0, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
Extend(aNode, aNode.GetChildCount(), aRv);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ContainsNode(nsIDOMNode* aNode, bool aAllowPartial, bool* aYes)
|
|
{
|
|
if (!aYes) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aYes = false;
|
|
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
if (!node) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
ErrorResult result;
|
|
*aYes = ContainsNode(*node, aAllowPartial, result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
bool
|
|
Selection::ContainsNode(nsINode& aNode, bool aAllowPartial, ErrorResult& aRv)
|
|
{
|
|
nsresult rv;
|
|
if (mRanges.Length() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// XXXbz this duplicates the GetNodeLength code in nsRange.cpp
|
|
uint32_t nodeLength;
|
|
bool isData = aNode.IsNodeOfType(nsINode::eDATA_NODE);
|
|
if (isData) {
|
|
nodeLength = static_cast<nsIContent&>(aNode).TextLength();
|
|
} else {
|
|
nodeLength = aNode.GetChildCount();
|
|
}
|
|
|
|
nsTArray<nsRange*> overlappingRanges;
|
|
rv = GetRangesForIntervalArray(&aNode, 0, &aNode, nodeLength,
|
|
false, &overlappingRanges);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return false;
|
|
}
|
|
if (overlappingRanges.Length() == 0)
|
|
return false; // no ranges overlap
|
|
|
|
// if the caller said partial intersections are OK, we're done
|
|
if (aAllowPartial) {
|
|
return true;
|
|
}
|
|
|
|
// text nodes always count as inside
|
|
if (isData) {
|
|
return true;
|
|
}
|
|
|
|
// The caller wants to know if the node is entirely within the given range,
|
|
// so we have to check all intersecting ranges.
|
|
for (uint32_t i = 0; i < overlappingRanges.Length(); i++) {
|
|
bool nodeStartsBeforeRange, nodeEndsAfterRange;
|
|
if (NS_SUCCEEDED(nsRange::CompareNodeToRange(&aNode, overlappingRanges[i],
|
|
&nodeStartsBeforeRange,
|
|
&nodeEndsAfterRange))) {
|
|
if (!nodeStartsBeforeRange && !nodeEndsAfterRange) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
nsPresContext*
|
|
Selection::GetPresContext() const
|
|
{
|
|
nsIPresShell *shell = GetPresShell();
|
|
if (!shell) {
|
|
return nullptr;
|
|
}
|
|
|
|
return shell->GetPresContext();
|
|
}
|
|
|
|
nsIPresShell*
|
|
Selection::GetPresShell() const
|
|
{
|
|
if (!mFrameSelection)
|
|
return nullptr;//nothing to do
|
|
|
|
return mFrameSelection->GetShell();
|
|
}
|
|
|
|
nsIFrame *
|
|
Selection::GetSelectionAnchorGeometry(SelectionRegion aRegion, nsRect* aRect)
|
|
{
|
|
if (!mFrameSelection)
|
|
return nullptr; // nothing to do
|
|
|
|
NS_ENSURE_TRUE(aRect, nullptr);
|
|
|
|
aRect->SetRect(0, 0, 0, 0);
|
|
|
|
switch (aRegion) {
|
|
case nsISelectionController::SELECTION_ANCHOR_REGION:
|
|
case nsISelectionController::SELECTION_FOCUS_REGION:
|
|
return GetSelectionEndPointGeometry(aRegion, aRect);
|
|
case nsISelectionController::SELECTION_WHOLE_SELECTION:
|
|
break;
|
|
default:
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ASSERTION(aRegion == nsISelectionController::SELECTION_WHOLE_SELECTION,
|
|
"should only be SELECTION_WHOLE_SELECTION here");
|
|
|
|
nsRect anchorRect;
|
|
nsIFrame* anchorFrame = GetSelectionEndPointGeometry(
|
|
nsISelectionController::SELECTION_ANCHOR_REGION, &anchorRect);
|
|
if (!anchorFrame)
|
|
return nullptr;
|
|
|
|
nsRect focusRect;
|
|
nsIFrame* focusFrame = GetSelectionEndPointGeometry(
|
|
nsISelectionController::SELECTION_FOCUS_REGION, &focusRect);
|
|
if (!focusFrame)
|
|
return nullptr;
|
|
|
|
NS_ASSERTION(anchorFrame->PresContext() == focusFrame->PresContext(),
|
|
"points of selection in different documents?");
|
|
// make focusRect relative to anchorFrame
|
|
focusRect += focusFrame->GetOffsetTo(anchorFrame);
|
|
|
|
aRect->UnionRectEdges(anchorRect, focusRect);
|
|
return anchorFrame;
|
|
}
|
|
|
|
nsIFrame *
|
|
Selection::GetSelectionEndPointGeometry(SelectionRegion aRegion, nsRect* aRect)
|
|
{
|
|
if (!mFrameSelection)
|
|
return nullptr; // nothing to do
|
|
|
|
NS_ENSURE_TRUE(aRect, nullptr);
|
|
|
|
aRect->SetRect(0, 0, 0, 0);
|
|
|
|
nsINode *node = nullptr;
|
|
uint32_t nodeOffset = 0;
|
|
nsIFrame *frame = nullptr;
|
|
|
|
switch (aRegion) {
|
|
case nsISelectionController::SELECTION_ANCHOR_REGION:
|
|
node = GetAnchorNode();
|
|
nodeOffset = AnchorOffset();
|
|
break;
|
|
case nsISelectionController::SELECTION_FOCUS_REGION:
|
|
node = GetFocusNode();
|
|
nodeOffset = FocusOffset();
|
|
break;
|
|
default:
|
|
return nullptr;
|
|
}
|
|
|
|
if (!node)
|
|
return nullptr;
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(node);
|
|
NS_ENSURE_TRUE(content.get(), nullptr);
|
|
int32_t frameOffset = 0;
|
|
frame = mFrameSelection->GetFrameForNodeOffset(content, nodeOffset,
|
|
mFrameSelection->GetHint(),
|
|
&frameOffset);
|
|
if (!frame)
|
|
return nullptr;
|
|
|
|
// Figure out what node type we have, then get the
|
|
// appropriate rect for it's nodeOffset.
|
|
bool isText = node->IsNodeOfType(nsINode::eTEXT);
|
|
|
|
nsPoint pt(0, 0);
|
|
if (isText) {
|
|
nsIFrame* childFrame = nullptr;
|
|
frameOffset = 0;
|
|
nsresult rv =
|
|
frame->GetChildFrameContainingOffset(nodeOffset,
|
|
mFrameSelection->GetHint(),
|
|
&frameOffset, &childFrame);
|
|
if (NS_FAILED(rv))
|
|
return nullptr;
|
|
if (!childFrame)
|
|
return nullptr;
|
|
|
|
frame = childFrame;
|
|
|
|
// Get the x coordinate of the offset into the text frame.
|
|
rv = GetCachedFrameOffset(frame, nodeOffset, pt);
|
|
if (NS_FAILED(rv))
|
|
return nullptr;
|
|
}
|
|
|
|
// Return the rect relative to the frame, with zero width.
|
|
if (isText) {
|
|
aRect->x = pt.x;
|
|
} else if (mFrameSelection->GetHint() == CARET_ASSOCIATE_BEFORE) {
|
|
// It's the frame's right edge we're interested in.
|
|
aRect->x = frame->GetRect().width;
|
|
}
|
|
aRect->height = frame->GetRect().height;
|
|
|
|
return frame;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ScrollSelectionIntoViewEvent::Run()
|
|
{
|
|
if (!mSelection)
|
|
return NS_OK; // event revoked
|
|
|
|
int32_t flags = Selection::SCROLL_DO_FLUSH |
|
|
Selection::SCROLL_SYNCHRONOUS;
|
|
|
|
mSelection->mScrollEvent.Forget();
|
|
mSelection->ScrollIntoView(mRegion, mVerticalScroll,
|
|
mHorizontalScroll, mFlags | flags);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Selection::PostScrollSelectionIntoViewEvent(
|
|
SelectionRegion aRegion,
|
|
int32_t aFlags,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal)
|
|
{
|
|
// If we've already posted an event, revoke it and place a new one at the
|
|
// end of the queue to make sure that any new pending reflow events are
|
|
// processed before we scroll. This will insure that we scroll to the
|
|
// correct place on screen.
|
|
mScrollEvent.Revoke();
|
|
|
|
RefPtr<ScrollSelectionIntoViewEvent> ev =
|
|
new ScrollSelectionIntoViewEvent(this, aRegion, aVertical, aHorizontal,
|
|
aFlags);
|
|
nsresult rv = NS_DispatchToCurrentThread(ev);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mScrollEvent = ev;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ScrollIntoView(SelectionRegion aRegion, bool aIsSynchronous,
|
|
int16_t aVPercent, int16_t aHPercent)
|
|
{
|
|
ErrorResult result;
|
|
ScrollIntoView(aRegion, aIsSynchronous, aVPercent, aHPercent, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::ScrollIntoView(int16_t aRegion, bool aIsSynchronous,
|
|
int16_t aVPercent, int16_t aHPercent,
|
|
ErrorResult& aRv)
|
|
{
|
|
nsresult rv = ScrollIntoViewInternal(aRegion, aIsSynchronous,
|
|
nsIPresShell::ScrollAxis(aVPercent),
|
|
nsIPresShell::ScrollAxis(aHPercent));
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::ScrollIntoViewInternal(SelectionRegion aRegion, bool aIsSynchronous,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal)
|
|
{
|
|
return ScrollIntoView(aRegion, aVertical, aHorizontal,
|
|
aIsSynchronous ? Selection::SCROLL_SYNCHRONOUS : 0);
|
|
}
|
|
|
|
nsresult
|
|
Selection::ScrollIntoView(SelectionRegion aRegion,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
int32_t aFlags)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = mFrameSelection->GetShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
if (mFrameSelection->GetBatching())
|
|
return NS_OK;
|
|
|
|
if (!(aFlags & Selection::SCROLL_SYNCHRONOUS))
|
|
return PostScrollSelectionIntoViewEvent(aRegion, aFlags,
|
|
aVertical, aHorizontal);
|
|
|
|
// Now that text frame character offsets are always valid (though not
|
|
// necessarily correct), the worst that will happen if we don't flush here
|
|
// is that some callers might scroll to the wrong place. Those should
|
|
// either manually flush if they're in a safe position for it or use the
|
|
// async version of this method.
|
|
if (aFlags & Selection::SCROLL_DO_FLUSH) {
|
|
presShell->FlushPendingNotifications(Flush_Layout);
|
|
|
|
// Reget the presshell, since it might have been Destroy'ed.
|
|
presShell = mFrameSelection ? mFrameSelection->GetShell() : nullptr;
|
|
if (!presShell)
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// Scroll the selection region into view.
|
|
//
|
|
|
|
nsRect rect;
|
|
nsIFrame* frame = GetSelectionAnchorGeometry(aRegion, &rect);
|
|
if (!frame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Scroll vertically to get the caret into view, but only if the container
|
|
// is perceived to be scrollable in that direction (i.e. there is a visible
|
|
// vertical scrollbar or the scroll range is at least one device pixel)
|
|
aVertical.mOnlyIfPerceivedScrollableDirection = true;
|
|
|
|
uint32_t flags = 0;
|
|
if (aFlags & Selection::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
flags |= nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY;
|
|
}
|
|
if (aFlags & Selection::SCROLL_OVERFLOW_HIDDEN) {
|
|
flags |= nsIPresShell::SCROLL_OVERFLOW_HIDDEN;
|
|
}
|
|
|
|
if (aFlags & Selection::SCROLL_FOR_CARET_MOVE) {
|
|
mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
|
|
(uint32_t) ScrollInputMethod::MainThreadScrollCaretIntoView);
|
|
}
|
|
|
|
presShell->ScrollFrameRectIntoView(frame, rect, aVertical, aHorizontal,
|
|
flags);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::AddSelectionListener(nsISelectionListener* aNewListener)
|
|
{
|
|
if (!aNewListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
ErrorResult result;
|
|
AddSelectionListener(aNewListener, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::AddSelectionListener(nsISelectionListener* aNewListener,
|
|
ErrorResult& aRv)
|
|
{
|
|
bool result = mSelectionListeners.AppendObject(aNewListener); // AddRefs
|
|
if (!result) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::RemoveSelectionListener(nsISelectionListener* aListenerToRemove)
|
|
{
|
|
if (!aListenerToRemove)
|
|
return NS_ERROR_NULL_POINTER;
|
|
ErrorResult result;
|
|
RemoveSelectionListener(aListenerToRemove, result);
|
|
if (result.Failed()) {
|
|
return result.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::RemoveSelectionListener(nsISelectionListener* aListenerToRemove,
|
|
ErrorResult& aRv)
|
|
{
|
|
bool result = mSelectionListeners.RemoveObject(aListenerToRemove); // Releases
|
|
if (!result) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
Selection::NotifySelectionListeners()
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
if (mFrameSelection->GetBatching()) {
|
|
mFrameSelection->SetDirty();
|
|
return NS_OK;
|
|
}
|
|
nsCOMArray<nsISelectionListener> selectionListeners(mSelectionListeners);
|
|
int32_t cnt = selectionListeners.Count();
|
|
if (cnt != mSelectionListeners.Count()) {
|
|
return NS_ERROR_OUT_OF_MEMORY; // nsCOMArray is fallible
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMDocument> domdoc;
|
|
nsIPresShell* ps = GetPresShell();
|
|
if (ps) {
|
|
domdoc = do_QueryInterface(ps->GetDocument());
|
|
}
|
|
|
|
short reason = mFrameSelection->PopReason();
|
|
for (int32_t i = 0; i < cnt; i++) {
|
|
selectionListeners[i]->NotifySelectionChanged(domdoc, this, reason);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::StartBatchChanges()
|
|
{
|
|
if (mFrameSelection)
|
|
mFrameSelection->StartBatchChanges();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
Selection::EndBatchChanges()
|
|
{
|
|
return EndBatchChangesInternal();
|
|
}
|
|
|
|
nsresult
|
|
Selection::EndBatchChangesInternal(int16_t aReason)
|
|
{
|
|
if (mFrameSelection) {
|
|
mFrameSelection->EndBatchChanges(aReason);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Selection::AddSelectionChangeBlocker()
|
|
{
|
|
mSelectionChangeBlockerCount++;
|
|
}
|
|
|
|
void
|
|
Selection::RemoveSelectionChangeBlocker()
|
|
{
|
|
MOZ_ASSERT(mSelectionChangeBlockerCount > 0,
|
|
"mSelectionChangeBlockerCount has an invalid value - "
|
|
"maybe you have a mismatched RemoveSelectionChangeBlocker?");
|
|
mSelectionChangeBlockerCount--;
|
|
}
|
|
|
|
bool
|
|
Selection::IsBlockingSelectionChangeEvents() const
|
|
{
|
|
return mSelectionChangeBlockerCount > 0;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::DeleteFromDocument()
|
|
{
|
|
ErrorResult result;
|
|
DeleteFromDocument(result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::DeleteFromDocument(ErrorResult& aRv)
|
|
{
|
|
if (!mFrameSelection)
|
|
return;//nothing to do
|
|
nsresult rv = mFrameSelection->DeleteFromDocument();
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Selection::Modify(const nsAString& aAlter, const nsAString& aDirection,
|
|
const nsAString& aGranularity)
|
|
{
|
|
ErrorResult result;
|
|
Modify(aAlter, aDirection, aGranularity, result);
|
|
return result.StealNSResult();
|
|
}
|
|
|
|
void
|
|
Selection::Modify(const nsAString& aAlter, const nsAString& aDirection,
|
|
const nsAString& aGranularity, ErrorResult& aRv)
|
|
{
|
|
// Silently exit if there's no selection or no focus node.
|
|
if (!mFrameSelection || !GetAnchorFocusRange() || !GetFocusNode()) {
|
|
return;
|
|
}
|
|
|
|
if (!aAlter.LowerCaseEqualsLiteral("move") &&
|
|
!aAlter.LowerCaseEqualsLiteral("extend")) {
|
|
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return;
|
|
}
|
|
|
|
if (!aDirection.LowerCaseEqualsLiteral("forward") &&
|
|
!aDirection.LowerCaseEqualsLiteral("backward") &&
|
|
!aDirection.LowerCaseEqualsLiteral("left") &&
|
|
!aDirection.LowerCaseEqualsLiteral("right")) {
|
|
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return;
|
|
}
|
|
|
|
// Line moves are always visual.
|
|
bool visual = aDirection.LowerCaseEqualsLiteral("left") ||
|
|
aDirection.LowerCaseEqualsLiteral("right") ||
|
|
aGranularity.LowerCaseEqualsLiteral("line");
|
|
|
|
bool forward = aDirection.LowerCaseEqualsLiteral("forward") ||
|
|
aDirection.LowerCaseEqualsLiteral("right");
|
|
|
|
bool extend = aAlter.LowerCaseEqualsLiteral("extend");
|
|
|
|
nsSelectionAmount amount;
|
|
if (aGranularity.LowerCaseEqualsLiteral("character")) {
|
|
amount = eSelectCluster;
|
|
} else if (aGranularity.LowerCaseEqualsLiteral("word")) {
|
|
amount = eSelectWordNoSpace;
|
|
} else if (aGranularity.LowerCaseEqualsLiteral("line")) {
|
|
amount = eSelectLine;
|
|
} else if (aGranularity.LowerCaseEqualsLiteral("lineboundary")) {
|
|
amount = forward ? eSelectEndLine : eSelectBeginLine;
|
|
} else if (aGranularity.LowerCaseEqualsLiteral("sentence") ||
|
|
aGranularity.LowerCaseEqualsLiteral("sentenceboundary") ||
|
|
aGranularity.LowerCaseEqualsLiteral("paragraph") ||
|
|
aGranularity.LowerCaseEqualsLiteral("paragraphboundary") ||
|
|
aGranularity.LowerCaseEqualsLiteral("documentboundary")) {
|
|
aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
|
|
return;
|
|
} else {
|
|
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return;
|
|
}
|
|
|
|
// If the anchor doesn't equal the focus and we try to move without first
|
|
// collapsing the selection, MoveCaret will collapse the selection and quit.
|
|
// To avoid this, we need to collapse the selection first.
|
|
nsresult rv = NS_OK;
|
|
if (!extend) {
|
|
nsINode* focusNode = GetFocusNode();
|
|
// We should have checked earlier that there was a focus node.
|
|
if (!focusNode) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
uint32_t focusOffset = FocusOffset();
|
|
Collapse(focusNode, focusOffset);
|
|
}
|
|
|
|
// If the paragraph direction of the focused frame is right-to-left,
|
|
// we may have to swap the direction of movement.
|
|
nsIFrame *frame;
|
|
int32_t offset;
|
|
rv = GetPrimaryFrameForFocusNode(&frame, &offset, visual);
|
|
if (NS_SUCCEEDED(rv) && frame) {
|
|
nsBidiDirection paraDir = nsBidiPresUtils::ParagraphDirection(frame);
|
|
|
|
if (paraDir == NSBIDI_RTL && visual) {
|
|
if (amount == eSelectBeginLine) {
|
|
amount = eSelectEndLine;
|
|
forward = !forward;
|
|
} else if (amount == eSelectEndLine) {
|
|
amount = eSelectBeginLine;
|
|
forward = !forward;
|
|
}
|
|
}
|
|
}
|
|
|
|
// MoveCaret will return an error if it can't move in the specified
|
|
// direction, but we just ignore this error unless it's a line move, in which
|
|
// case we call nsISelectionController::CompleteMove to move the cursor to
|
|
// the beginning/end of the line.
|
|
rv = mFrameSelection->MoveCaret(forward ? eDirNext : eDirPrevious,
|
|
extend, amount,
|
|
visual ? nsFrameSelection::eVisual
|
|
: nsFrameSelection::eLogical);
|
|
|
|
if (aGranularity.LowerCaseEqualsLiteral("line") && NS_FAILED(rv)) {
|
|
nsCOMPtr<nsISelectionController> shell =
|
|
do_QueryInterface(mFrameSelection->GetShell());
|
|
if (!shell)
|
|
return;
|
|
shell->CompleteMove(forward, extend);
|
|
}
|
|
}
|
|
|
|
/** SelectionLanguageChange modifies the cursor Bidi level after a change in keyboard direction
|
|
* @param aLangRTL is true if the new language is right-to-left or false if the new language is left-to-right
|
|
*/
|
|
NS_IMETHODIMP
|
|
Selection::SelectionLanguageChange(bool aLangRTL)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
|
|
// if the direction of the language hasn't changed, nothing to do
|
|
nsBidiLevel kbdBidiLevel = aLangRTL ? NSBIDI_RTL : NSBIDI_LTR;
|
|
if (kbdBidiLevel == mFrameSelection->mKbdBidiLevel) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mFrameSelection->mKbdBidiLevel = kbdBidiLevel;
|
|
|
|
nsresult result;
|
|
nsIFrame *focusFrame = 0;
|
|
|
|
result = GetPrimaryFrameForFocusNode(&focusFrame, nullptr, false);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
if (!focusFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int32_t frameStart, frameEnd;
|
|
focusFrame->GetOffsets(frameStart, frameEnd);
|
|
RefPtr<nsPresContext> context = GetPresContext();
|
|
nsBidiLevel levelBefore, levelAfter;
|
|
if (!context) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsBidiLevel level = nsBidi::GetEmbeddingLevel(focusFrame);
|
|
int32_t focusOffset = static_cast<int32_t>(FocusOffset());
|
|
if ((focusOffset != frameStart) && (focusOffset != frameEnd))
|
|
// the cursor is not at a frame boundary, so the level of both the characters (logically) before and after the cursor
|
|
// is equal to the frame level
|
|
levelBefore = levelAfter = level;
|
|
else {
|
|
// the cursor is at a frame boundary, so use GetPrevNextBidiLevels to find the level of the characters
|
|
// before and after the cursor
|
|
nsCOMPtr<nsIContent> focusContent = do_QueryInterface(GetFocusNode());
|
|
nsPrevNextBidiLevels levels = mFrameSelection->
|
|
GetPrevNextBidiLevels(focusContent, focusOffset, false);
|
|
|
|
levelBefore = levels.mLevelBefore;
|
|
levelAfter = levels.mLevelAfter;
|
|
}
|
|
|
|
if (IS_SAME_DIRECTION(levelBefore, levelAfter)) {
|
|
// if cursor is between two characters with the same orientation, changing the keyboard language
|
|
// must toggle the cursor level between the level of the character with the lowest level
|
|
// (if the new language corresponds to the orientation of that character) and this level plus 1
|
|
// (if the new language corresponds to the opposite orientation)
|
|
if ((level != levelBefore) && (level != levelAfter))
|
|
level = std::min(levelBefore, levelAfter);
|
|
if (IS_SAME_DIRECTION(level, kbdBidiLevel))
|
|
mFrameSelection->SetCaretBidiLevel(level);
|
|
else
|
|
mFrameSelection->SetCaretBidiLevel(level + 1);
|
|
}
|
|
else {
|
|
// if cursor is between characters with opposite orientations, changing the keyboard language must change
|
|
// the cursor level to that of the adjacent character with the orientation corresponding to the new language.
|
|
if (IS_SAME_DIRECTION(levelBefore, kbdBidiLevel))
|
|
mFrameSelection->SetCaretBidiLevel(levelBefore);
|
|
else
|
|
mFrameSelection->SetCaretBidiLevel(levelAfter);
|
|
}
|
|
|
|
// The caret might have moved, so invalidate the desired position
|
|
// for future usages of up-arrow or down-arrow
|
|
mFrameSelection->InvalidateDesiredPos();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsDirection)
|
|
Selection::GetSelectionDirection() {
|
|
return mDirection;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
Selection::SetSelectionDirection(nsDirection aDirection) {
|
|
mDirection = aDirection;
|
|
}
|
|
|
|
JSObject*
|
|
Selection::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return mozilla::dom::SelectionBinding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
// AutoHideSelectionChanges
|
|
AutoHideSelectionChanges::AutoHideSelectionChanges(const nsFrameSelection* aFrame)
|
|
: AutoHideSelectionChanges(
|
|
aFrame ? aFrame->GetSelection(SelectionType::eNormal) : nullptr)
|
|
{}
|
|
|
|
// nsAutoCopyListener
|
|
|
|
nsAutoCopyListener* nsAutoCopyListener::sInstance = nullptr;
|
|
|
|
NS_IMPL_ISUPPORTS(nsAutoCopyListener, nsISelectionListener)
|
|
|
|
/*
|
|
* 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 nsPresShell::DoCopy 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
|
|
* nsISelection 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.
|
|
*/
|
|
|
|
NS_IMETHODIMP
|
|
nsAutoCopyListener::NotifySelectionChanged(nsIDOMDocument *aDoc,
|
|
nsISelection *aSel, int16_t aReason)
|
|
{
|
|
if (mCachedClipboard == nsIClipboard::kSelectionCache) {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
// If no active window, do nothing because a current selection changed
|
|
// cannot occur unless it is in the active window.
|
|
if (!fm->GetActiveWindow()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (!(aReason & nsISelectionListener::MOUSEUP_REASON ||
|
|
aReason & nsISelectionListener::SELECTALL_REASON ||
|
|
aReason & nsISelectionListener::KEYPRESS_REASON))
|
|
return NS_OK; //dont care if we are still dragging
|
|
|
|
bool collapsed;
|
|
if (!aDoc || !aSel ||
|
|
NS_FAILED(aSel->GetIsCollapsed(&collapsed)) || collapsed) {
|
|
#ifdef DEBUG_CLIPBOARD
|
|
fprintf(stderr, "CLIPBOARD: no selection/collapsed selection\n");
|
|
#endif
|
|
// If on macOS, clear the current selection transferable cached
|
|
// on the parent process (nsClipboard) when the selection is empty.
|
|
if (mCachedClipboard == nsIClipboard::kSelectionCache) {
|
|
return nsCopySupport::ClearSelectionCache();
|
|
}
|
|
/* clear X clipboard? */
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
|
|
|
|
// call the copy code
|
|
return nsCopySupport::HTMLCopy(aSel, doc,
|
|
mCachedClipboard, false);
|
|
}
|
|
|
|
/**
|
|
* 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 nsAutoCopyListener::NotifySelectionChanged.
|
|
*/
|
|
nsresult
|
|
nsFrameSelection::UpdateSelectionCacheOnRepaintSelection(Selection* aSel)
|
|
{
|
|
nsIPresShell* ps = aSel->GetPresShell();
|
|
if (!ps) {
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsIDocument> aDoc = ps->GetDocument();
|
|
|
|
bool collapsed;
|
|
if (aDoc && aSel &&
|
|
NS_SUCCEEDED(aSel->GetIsCollapsed(&collapsed)) && !collapsed) {
|
|
return nsCopySupport::HTMLCopy(aSel, aDoc,
|
|
nsIClipboard::kSelectionCache, false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// SelectionChangeListener
|
|
|
|
SelectionChangeListener::RawRangeData::RawRangeData(const nsRange* aRange)
|
|
{
|
|
mozilla::ErrorResult rv;
|
|
mStartParent = aRange->GetStartContainer(rv);
|
|
rv.SuppressException();
|
|
mEndParent = aRange->GetEndContainer(rv);
|
|
rv.SuppressException();
|
|
mStartOffset = aRange->GetStartOffset(rv);
|
|
rv.SuppressException();
|
|
mEndOffset = aRange->GetEndOffset(rv);
|
|
rv.SuppressException();
|
|
}
|
|
|
|
bool
|
|
SelectionChangeListener::RawRangeData::Equals(const nsRange* aRange)
|
|
{
|
|
mozilla::ErrorResult rv;
|
|
bool eq = mStartParent == aRange->GetStartContainer(rv);
|
|
rv.SuppressException();
|
|
eq = eq && mEndParent == aRange->GetEndContainer(rv);
|
|
rv.SuppressException();
|
|
eq = eq && mStartOffset == aRange->GetStartOffset(rv);
|
|
rv.SuppressException();
|
|
eq = eq && mEndOffset == aRange->GetEndOffset(rv);
|
|
rv.SuppressException();
|
|
return eq;
|
|
}
|
|
|
|
inline void
|
|
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& aCallback,
|
|
SelectionChangeListener::RawRangeData& aField,
|
|
const char* aName,
|
|
uint32_t aFlags = 0)
|
|
{
|
|
ImplCycleCollectionTraverse(aCallback, aField.mStartParent, "mStartParent", aFlags);
|
|
ImplCycleCollectionTraverse(aCallback, aField.mEndParent, "mEndParent", aFlags);
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(SelectionChangeListener)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(SelectionChangeListener)
|
|
tmp->mOldRanges.Clear();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(SelectionChangeListener)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOldRanges);
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SelectionChangeListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_ENTRY(nsISelectionListener)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(SelectionChangeListener)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(SelectionChangeListener)
|
|
|
|
NS_IMETHODIMP
|
|
SelectionChangeListener::NotifySelectionChanged(nsIDOMDocument* aDoc,
|
|
nsISelection* aSel, int16_t aReason)
|
|
{
|
|
RefPtr<Selection> sel = aSel->AsSelection();
|
|
|
|
// Check if the ranges have actually changed
|
|
// Don't bother checking this if we are hiding changes.
|
|
if (mOldRanges.Length() == sel->RangeCount() && !sel->IsBlockingSelectionChangeEvents()) {
|
|
bool changed = false;
|
|
|
|
for (size_t i = 0; i < mOldRanges.Length(); i++) {
|
|
if (!mOldRanges[i].Equals(sel->GetRangeAt(i))) {
|
|
changed = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!changed) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// The ranges have actually changed, update the mOldRanges array
|
|
mOldRanges.ClearAndRetainStorage();
|
|
for (size_t i = 0; i < sel->RangeCount(); i++) {
|
|
mOldRanges.AppendElement(RawRangeData(sel->GetRangeAt(i)));
|
|
}
|
|
|
|
// If we are hiding changes, then don't do anything else. We do this after we
|
|
// update mOldRanges so that changes after the changes stop being hidden don't
|
|
// incorrectly trigger a change, even though they didn't change anything
|
|
if (sel->IsBlockingSelectionChangeEvents()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> target;
|
|
|
|
// Check if we should be firing this event to a different node than the
|
|
// document. The limiter of the nsFrameSelection will be within the native
|
|
// anonymous subtree of the node we want to fire the event on. We need to
|
|
// climb up the parent chain to escape the native anonymous subtree, and then
|
|
// fire the event.
|
|
if (nsFrameSelection* fs = sel->GetFrameSelection()) {
|
|
if (nsCOMPtr<nsIContent> root = fs->GetLimiter()) {
|
|
while (root && root->IsInNativeAnonymousSubtree()) {
|
|
root = root->GetParent();
|
|
}
|
|
|
|
target = root.forget();
|
|
}
|
|
}
|
|
|
|
// If we didn't get a target before, we can instead fire the event at the document.
|
|
if (!target) {
|
|
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
|
|
target = doc.forget();
|
|
}
|
|
|
|
if (target) {
|
|
RefPtr<AsyncEventDispatcher> asyncDispatcher =
|
|
new AsyncEventDispatcher(target, NS_LITERAL_STRING("selectionchange"), false);
|
|
asyncDispatcher->PostDOMEvent();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|