forked from mirrors/gecko-dev
816 lines
32 KiB
C++
816 lines
32 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsFrameSelection_h___
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#define nsFrameSelection_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/TextRange.h"
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#include "mozilla/UniquePtr.h"
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#include "nsIFrame.h"
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#include "nsIContent.h"
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#include "nsISelectionController.h"
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#include "nsISelectionListener.h"
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#include "nsITableCellLayout.h"
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#include "WordMovementType.h"
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#include "CaretAssociationHint.h"
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#include "nsBidiPresUtils.h"
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class nsRange;
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#define BIDI_LEVEL_UNDEFINED 0x80
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//----------------------------------------------------------------------
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// Selection interface
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struct SelectionDetails
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{
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SelectionDetails()
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: mStart()
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, mEnd()
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, mSelectionType(mozilla::SelectionType::eInvalid) {
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MOZ_COUNT_CTOR(SelectionDetails);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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~SelectionDetails() {
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MOZ_COUNT_DTOR(SelectionDetails);
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}
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#endif
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int32_t mStart;
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int32_t mEnd;
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mozilla::SelectionType mSelectionType;
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mozilla::TextRangeStyle mTextRangeStyle;
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mozilla::UniquePtr<SelectionDetails> mNext;
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};
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struct SelectionCustomColors
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{
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#ifdef NS_BUILD_REFCNT_LOGGING
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SelectionCustomColors()
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{
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MOZ_COUNT_CTOR(SelectionCustomColors);
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}
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~SelectionCustomColors()
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{
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MOZ_COUNT_DTOR(SelectionCustomColors);
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}
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#endif
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mozilla::Maybe<nscolor> mForegroundColor;
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mozilla::Maybe<nscolor> mBackgroundColor;
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mozilla::Maybe<nscolor> mAltForegroundColor;
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mozilla::Maybe<nscolor> mAltBackgroundColor;
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};
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class nsIPresShell;
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/** PeekOffsetStruct is used to group various arguments (both input and output)
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* that are passed to nsFrame::PeekOffset(). See below for the description of
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* individual arguments.
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*/
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struct MOZ_STACK_CLASS nsPeekOffsetStruct
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{
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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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mozilla::EWordMovementType aWordMovementType = mozilla::eDefaultBehavior);
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// Note: Most arguments (input and output) are only used with certain values
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// of mAmount. These values are indicated for each argument below.
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// Arguments with no such indication are used with all values of mAmount.
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/*** Input arguments ***/
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// Note: The value of some of the input arguments may be changed upon exit.
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// mAmount: The type of movement requested (by character, word, line, etc.)
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nsSelectionAmount mAmount;
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// mDirection: eDirPrevious or eDirNext.
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// * Note for visual bidi movement:
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// eDirPrevious means 'left-then-up' if the containing block is LTR,
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// 'right-then-up' if it is RTL.
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// eDirNext means 'right-then-down' if the containing block is LTR,
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// 'left-then-down' if it is RTL.
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// Between paragraphs, eDirPrevious means "go to the visual end of the
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// previous paragraph", and eDirNext means "go to the visual beginning
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// of the next paragraph".
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// Used with: eSelectCharacter, eSelectWord, eSelectLine, eSelectParagraph.
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nsDirection mDirection;
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// mStartOffset: Offset into the content of the current frame where the peek starts.
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// Used with: eSelectCharacter, eSelectWord
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int32_t mStartOffset;
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// mDesiredPos: The desired inline coordinate for the caret
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// (one of .x or .y will be used, depending on line's writing mode)
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// Used with: eSelectLine.
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nsPoint mDesiredPos;
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// mWordMovementType: An enum that determines whether to prefer the start or end of a word
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// or to use the default beahvior, which is a combination of
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// direction and the platform-based pref
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// "layout.word_select.eat_space_to_next_word"
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mozilla::EWordMovementType mWordMovementType;
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// mJumpLines: Whether to allow jumping across line boundaries.
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// Used with: eSelectCharacter, eSelectWord.
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bool mJumpLines;
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// mScrollViewStop: Whether to stop when reaching a scroll view boundary.
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// Used with: eSelectCharacter, eSelectWord, eSelectLine.
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bool mScrollViewStop;
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// mIsKeyboardSelect: Whether the peeking is done in response to a keyboard action.
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// Used with: eSelectWord.
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bool mIsKeyboardSelect;
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// mVisual: Whether bidi caret behavior is visual (true) or logical (false).
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// Used with: eSelectCharacter, eSelectWord, eSelectBeginLine, eSelectEndLine.
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bool mVisual;
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// mExtend: Whether the selection is being extended or moved.
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bool mExtend;
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/*** Output arguments ***/
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// mResultContent: Content reached as a result of the peek.
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nsCOMPtr<nsIContent> mResultContent;
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// mResultFrame: Frame reached as a result of the peek.
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// Used with: eSelectCharacter, eSelectWord.
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nsIFrame *mResultFrame;
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// mContentOffset: Offset into content reached as a result of the peek.
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int32_t mContentOffset;
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// mAttachForward: When the result position is between two frames,
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// indicates which of the two frames the caret should be painted in.
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// false means "the end of the frame logically before the caret",
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// true means "the beginning of the frame logically after the caret".
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// Used with: eSelectLine, eSelectBeginLine, eSelectEndLine.
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mozilla::CaretAssociationHint mAttach;
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};
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struct nsPrevNextBidiLevels
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{
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void SetData(nsIFrame* aFrameBefore,
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nsIFrame* aFrameAfter,
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nsBidiLevel aLevelBefore,
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nsBidiLevel aLevelAfter)
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{
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mFrameBefore = aFrameBefore;
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mFrameAfter = aFrameAfter;
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mLevelBefore = aLevelBefore;
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mLevelAfter = aLevelAfter;
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}
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nsIFrame* mFrameBefore;
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nsIFrame* mFrameAfter;
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nsBidiLevel mLevelBefore;
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nsBidiLevel mLevelAfter;
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};
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namespace mozilla {
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namespace dom {
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class Selection;
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class SelectionChangeListener;
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} // namespace dom
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/**
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* Constants for places that want to handle table selections. These
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* indicate what part of a table is being selected.
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*/
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enum class TableSelection : uint32_t {
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None, /* Nothing being selected; not valid in all cases. */
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Cell, /* A cell is being selected. */
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Row, /* A row is being selected. */
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Column, /* A column is being selected. */
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Table, /* A table (including cells and captions) is being selected. */
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AllCells, /* All the cells in a table are being selected. */
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};
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} // namespace mozilla
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class nsIScrollableFrame;
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/**
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* Methods which are marked with *unsafe* should be handled with special care.
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* They may cause nsFrameSelection to be deleted, if strong pointer isn't used,
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* or they may cause other objects to be deleted.
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*/
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class nsFrameSelection final
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{
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public:
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typedef mozilla::CaretAssociationHint CaretAssociateHint;
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/*interfaces for addref and release and queryinterface*/
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(nsFrameSelection)
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NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(nsFrameSelection)
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/** Init will initialize the frame selector with the necessary pres shell to
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* be used by most of the methods
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* @param aShell is the parameter to be used for most of the other calls for callbacks etc
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* @param aLimiter limits the selection to nodes with aLimiter parents
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* @param aAccessibleCaretEnabled true if we should enable the accessible caret.
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*/
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void Init(nsIPresShell *aShell, nsIContent *aLimiter,
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bool aAccessibleCaretEnabled);
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/** HandleClick will take the focus to the new frame at the new offset and
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* will either extend the selection from the old anchor, or replace the old anchor.
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* the old anchor and focus position may also be used to deselect things
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* @param aNewfocus is the content that wants the focus
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* @param aContentOffset is the content offset of the parent aNewFocus
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* @param aContentOffsetEnd is the content offset of the parent aNewFocus and is specified different
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* when you need to select to and include both start and end points
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* @param aContinueSelection is the flag that tells the selection to keep the old anchor point or not.
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* @param aMultipleSelection will tell the frame selector to replace /or not the old selection.
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* cannot coexist with aContinueSelection
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* @param aHint will tell the selection which direction geometrically to actually show the caret on.
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* 1 = end of this line 0 = beginning of this line
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*/
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/*unsafe*/
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nsresult HandleClick(nsIContent *aNewFocus,
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uint32_t aContentOffset,
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uint32_t aContentEndOffset,
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bool aContinueSelection,
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bool aMultipleSelection,
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CaretAssociateHint aHint);
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/** HandleDrag extends the selection to contain the frame closest to aPoint.
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* @param aPresContext is the context to use when figuring out what frame contains the point.
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* @param aFrame is the parent of all frames to use when searching for the closest frame to the point.
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* @param aPoint is relative to aFrame
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*/
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/*unsafe*/
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void HandleDrag(nsIFrame* aFrame, const nsPoint& aPoint);
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/** HandleTableSelection will set selection to a table, cell, etc
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* depending on information contained in aFlags
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* @param aParentContent is the paretent of either a table or cell that user clicked or dragged the mouse in
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* @param aContentOffset is the offset of the table or cell
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* @param aTarget indicates what to select
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* TableSelection::Cell We should select a cell (content points to the cell)
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* TableSelection::Row We should select a row (content points to any cell in row)
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* TableSelection::Column We should select a row (content points to any cell in column)
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* TableSelection::Table We should select a table (content points to the table)
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* TableSelection::AllCells We should select all cells (content points to any cell in table)
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* @param aMouseEvent passed in so we can get where event occurred and what keys are pressed
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*/
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/*unsafe*/
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nsresult HandleTableSelection(nsINode* aParentContent,
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int32_t aContentOffset,
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mozilla::TableSelection aTarget,
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mozilla::WidgetMouseEvent* aMouseEvent);
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/**
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* Add cell to the selection.
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*
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* @param aCell [in] HTML td element.
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*/
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nsresult SelectCellElement(nsIContent *aCell);
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/**
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* Add cells to the selection inside of the given cells range.
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*
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* @param aTable [in] HTML table element
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* @param aStartRowIndex [in] row index where the cells range starts
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* @param aStartColumnIndex [in] column index where the cells range starts
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* @param aEndRowIndex [in] row index where the cells range ends
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* @param aEndColumnIndex [in] column index where the cells range ends
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*/
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nsresult AddCellsToSelection(nsIContent* aTable,
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int32_t aStartRowIndex,
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int32_t aStartColumnIndex,
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int32_t aEndRowIndex,
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int32_t aEndColumnIndex);
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/**
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* Remove cells from selection inside of the given cell range.
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*
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* @param aTable [in] HTML table element
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* @param aStartRowIndex [in] row index where the cells range starts
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* @param aStartColumnIndex [in] column index where the cells range starts
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* @param aEndRowIndex [in] row index where the cells range ends
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* @param aEndColumnIndex [in] column index where the cells range ends
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*/
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nsresult RemoveCellsFromSelection(nsIContent* aTable,
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int32_t aStartRowIndex,
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int32_t aStartColumnIndex,
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int32_t aEndRowIndex,
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int32_t aEndColumnIndex);
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/**
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* Remove cells from selection outside of the given cell range.
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*
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* @param aTable [in] HTML table element
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* @param aStartRowIndex [in] row index where the cells range starts
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* @param aStartColumnIndex [in] column index where the cells range starts
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* @param aEndRowIndex [in] row index where the cells range ends
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* @param aEndColumnIndex [in] column index where the cells range ends
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*/
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nsresult RestrictCellsToSelection(nsIContent* aTable,
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int32_t aStartRowIndex,
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int32_t aStartColumnIndex,
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int32_t aEndRowIndex,
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int32_t aEndColumnIndex);
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/** StartAutoScrollTimer is responsible for scrolling frames so that
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* aPoint is always visible, and for selecting any frame that contains
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* aPoint. The timer will also reset itself to fire again if we have
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* not scrolled to the end of the document.
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* @param aFrame is the outermost frame to use when searching for
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* the closest frame for the point, i.e. the frame that is capturing
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* the mouse
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* @param aPoint is relative to aFrame.
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* @param aDelay is the timer's interval.
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*/
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/*unsafe*/
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nsresult StartAutoScrollTimer(nsIFrame* aFrame,
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const nsPoint& aPoint,
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uint32_t aDelay);
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/** StopAutoScrollTimer stops any active auto scroll timer.
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*/
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void StopAutoScrollTimer();
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/** Lookup Selection
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* returns in frame coordinates the selection beginning and ending with the type of selection given
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* @param aContent is the content asking
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* @param aContentOffset is the starting content boundary
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* @param aContentLength is the length of the content piece asking
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* @param aSlowCheck will check using slow method with no shortcuts
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*/
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mozilla::UniquePtr<SelectionDetails> LookUpSelection(nsIContent *aContent,
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int32_t aContentOffset,
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int32_t aContentLength,
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bool aSlowCheck) const;
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/** SetDragState(bool);
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* sets the drag state to aState for resons of drag state.
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* @param aState is the new state of drag
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*/
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/*unsafe*/
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void SetDragState(bool aState);
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/** GetDragState(bool *);
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* gets the drag state to aState for resons of drag state.
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* @param aState will hold the state of drag
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*/
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bool GetDragState() const { return mDragState; }
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/**
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if we are in table cell selection mode. aka ctrl click in table cell
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*/
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bool GetTableCellSelection() const
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{
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return mSelectingTableCellMode != mozilla::TableSelection::None;
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}
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void ClearTableCellSelection()
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{
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mSelectingTableCellMode = mozilla::TableSelection::None;
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}
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/** GetSelection
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* no query interface for selection. must use this method now.
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* @param aSelectionType The selection type what you want.
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*/
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mozilla::dom::Selection*
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GetSelection(mozilla::SelectionType aSelectionType) const;
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/**
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* ScrollSelectionIntoView scrolls a region of the selection,
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* so that it is visible in the scrolled view.
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*
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* @param aSelectionType the selection to scroll into view.
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* @param aRegion the region inside the selection to scroll into view.
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* @param aFlags the scroll flags. Valid bits include:
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* SCROLL_SYNCHRONOUS: when set, scrolls the selection into view
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* before returning. If not set, posts a request which is processed
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* at some point after the method returns.
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* SCROLL_FIRST_ANCESTOR_ONLY: if set, only the first ancestor will be scrolled
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* into view.
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*
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*/
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/*unsafe*/
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nsresult ScrollSelectionIntoView(mozilla::SelectionType aSelectionType,
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SelectionRegion aRegion,
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int16_t aFlags) const;
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/** RepaintSelection repaints the selected frames that are inside the selection
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* specified by aSelectionType.
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* @param aSelectionType The selection type what you want to repaint.
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*/
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nsresult RepaintSelection(mozilla::SelectionType aSelectionType);
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/** GetFrameForNodeOffset given a node and its child offset, return the nsIFrame and
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* the offset into that frame.
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* @param aNode input parameter for the node to look at
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* @param aOffset offset into above node.
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* @param aReturnOffset will contain offset into frame.
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*/
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nsIFrame* GetFrameForNodeOffset(nsIContent* aNode,
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int32_t aOffset,
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CaretAssociateHint aHint,
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int32_t* aReturnOffset) const;
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/**
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* Scrolling then moving caret placement code in common to text areas and
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* content areas should be located in the implementer
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* This method will accept the following parameters and perform the scroll
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* and caret movement. It remains for the caller to call the final
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* ScrollCaretIntoView if that called wants to be sure the caret is always
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* visible.
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*
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* @param aForward if true, scroll forward if not scroll backward
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* @param aExtend if true, extend selection to the new point
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* @param aScrollableFrame the frame to scroll
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*/
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/*unsafe*/
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void CommonPageMove(bool aForward,
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bool aExtend,
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nsIScrollableFrame* aScrollableFrame);
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void SetHint(CaretAssociateHint aHintRight) { mHint = aHintRight; }
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CaretAssociateHint GetHint() const { return mHint; }
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/**
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* SetCaretBidiLevel sets the caret bidi level.
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* @param aLevel the caret bidi level
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*/
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void SetCaretBidiLevel(nsBidiLevel aLevel);
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/**
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* GetCaretBidiLevel gets the caret bidi level.
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*/
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nsBidiLevel GetCaretBidiLevel() const;
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/**
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* UndefineCaretBidiLevel sets the caret bidi level to "undefined".
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*/
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void UndefineCaretBidiLevel();
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/** PhysicalMove will generally be called from the nsiselectioncontroller implementations.
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* the effect being the selection will move one unit 'aAmount' in the
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* given aDirection.
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* @param aDirection the direction to move the selection
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* @param aAmount amount of movement (char/line; word/page; eol/doc)
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* @param aExtend continue selection
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*/
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/*unsafe*/
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nsresult PhysicalMove(int16_t aDirection, int16_t aAmount, bool aExtend);
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/** CharacterMove will generally be called from the nsiselectioncontroller implementations.
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* the effect being the selection will move one character left or right.
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* @param aForward move forward in document.
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* @param aExtend continue selection
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*/
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/*unsafe*/
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nsresult CharacterMove(bool aForward, bool aExtend);
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/** CharacterExtendForDelete extends the selection forward (logically) to
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* the next character cell, so that the selected cell can be deleted.
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*/
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/*unsafe*/
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nsresult CharacterExtendForDelete();
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/** CharacterExtendForBackspace extends the selection backward (logically) to
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* the previous character cell, so that the selected cell can be deleted.
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*/
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/*unsafe*/
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nsresult CharacterExtendForBackspace();
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/** WordMove will generally be called from the nsiselectioncontroller implementations.
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* the effect being the selection will move one word left or right.
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* @param aForward move forward in document.
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* @param aExtend continue selection
|
|
*/
|
|
/*unsafe*/
|
|
nsresult WordMove(bool aForward, bool aExtend);
|
|
|
|
/** WordExtendForDelete extends the selection backward or forward (logically) to the
|
|
* next word boundary, so that the selected word can be deleted.
|
|
* @param aForward select forward in document.
|
|
*/
|
|
/*unsafe*/
|
|
nsresult WordExtendForDelete(bool aForward);
|
|
|
|
/** LineMove will generally be called from the nsiselectioncontroller implementations.
|
|
* the effect being the selection will move one line up or down.
|
|
* @param aForward move forward in document.
|
|
* @param aExtend continue selection
|
|
*/
|
|
/*unsafe*/
|
|
nsresult LineMove(bool aForward, bool aExtend);
|
|
|
|
/** IntraLineMove will generally be called from the nsiselectioncontroller implementations.
|
|
* the effect being the selection will move to beginning or end of line
|
|
* @param aForward move forward in document.
|
|
* @param aExtend continue selection
|
|
*/
|
|
/*unsafe*/
|
|
nsresult IntraLineMove(bool aForward, bool aExtend);
|
|
|
|
/** Select All will generally be called from the nsiselectioncontroller implementations.
|
|
* it will select the whole doc
|
|
*/
|
|
/*unsafe*/
|
|
nsresult SelectAll();
|
|
|
|
/** Sets/Gets The display selection enum.
|
|
*/
|
|
void SetDisplaySelection(int16_t aState) { mDisplaySelection = aState; }
|
|
int16_t GetDisplaySelection() const { return mDisplaySelection; }
|
|
|
|
/** This method can be used to store the data received during a MouseDown
|
|
* event so that we can place the caret during the MouseUp event.
|
|
* @aMouseEvent the event received by the selection MouseDown
|
|
* handling method. A nullptr value can be use to tell this method
|
|
* that any data is storing is no longer valid.
|
|
*/
|
|
void SetDelayedCaretData(mozilla::WidgetMouseEvent* aMouseEvent);
|
|
|
|
/** Get the delayed MouseDown event data necessary to place the
|
|
* caret during MouseUp processing.
|
|
* @return a pointer to the event received
|
|
* by the selection during MouseDown processing. It can be nullptr
|
|
* if the data is no longer valid.
|
|
*/
|
|
bool HasDelayedCaretData() { return mDelayedMouseEventValid; }
|
|
bool IsShiftDownInDelayedCaretData()
|
|
{
|
|
NS_ASSERTION(mDelayedMouseEventValid, "No valid delayed caret data");
|
|
return mDelayedMouseEventIsShift;
|
|
}
|
|
uint32_t GetClickCountInDelayedCaretData()
|
|
{
|
|
NS_ASSERTION(mDelayedMouseEventValid, "No valid delayed caret data");
|
|
return mDelayedMouseEventClickCount;
|
|
}
|
|
|
|
bool MouseDownRecorded()
|
|
{
|
|
return !GetDragState() &&
|
|
HasDelayedCaretData() &&
|
|
GetClickCountInDelayedCaretData() < 2;
|
|
}
|
|
|
|
/** Get the content node that limits the selection
|
|
* When searching up a nodes for parents, as in a text edit field
|
|
* in an browser page, we must stop at this node else we reach into the
|
|
* parent page, which is very bad!
|
|
*/
|
|
nsIContent* GetLimiter() const { return mLimiter; }
|
|
|
|
nsIContent* GetAncestorLimiter() const { return mAncestorLimiter; }
|
|
/*unsafe*/
|
|
void SetAncestorLimiter(nsIContent *aLimiter);
|
|
|
|
/** This will tell the frame selection that a double click has been pressed
|
|
* so it can track abort future drags if inside the same selection
|
|
* @aDoubleDown has the double click down happened
|
|
*/
|
|
void SetMouseDoubleDown(bool aDoubleDown) { mMouseDoubleDownState = aDoubleDown; }
|
|
|
|
/** This will return whether the double down flag was set.
|
|
* @return whether the double down flag was set
|
|
*/
|
|
bool GetMouseDoubleDown() const { return mMouseDoubleDownState; }
|
|
|
|
/**
|
|
* GetPrevNextBidiLevels will return the frames and associated Bidi levels of the characters
|
|
* logically before and after a (collapsed) selection.
|
|
* @param aNode is the node containing the selection
|
|
* @param aContentOffset is the offset of the selection in the node
|
|
* @param aJumpLines If true, look across line boundaries.
|
|
* If false, behave as if there were base-level frames at line edges.
|
|
*
|
|
* @return A struct holding the before/after frame and the before/after level.
|
|
*
|
|
* At the beginning and end of each line there is assumed to be a frame with
|
|
* Bidi level equal to the paragraph embedding level.
|
|
* In these cases the before frame and after frame respectively will be
|
|
* nullptr.
|
|
*/
|
|
nsPrevNextBidiLevels GetPrevNextBidiLevels(nsIContent* aNode,
|
|
uint32_t aContentOffset,
|
|
bool aJumpLines) const;
|
|
|
|
/** GetFrameFromLevel will scan in a given direction
|
|
* until it finds a frame with a Bidi level less than or equal to a given level.
|
|
* It will return the last frame before this.
|
|
* @param aPresContext is the context to use
|
|
* @param aFrameIn is the frame to start from
|
|
* @param aDirection is the direction to scan
|
|
* @param aBidiLevel is the level to search for
|
|
* @param aFrameOut will hold the frame returned
|
|
*/
|
|
nsresult GetFrameFromLevel(nsIFrame *aFrameIn,
|
|
nsDirection aDirection,
|
|
nsBidiLevel aBidiLevel,
|
|
nsIFrame **aFrameOut) const;
|
|
|
|
/**
|
|
* MaintainSelection will track the current selection as being "sticky".
|
|
* Dragging or extending selection will never allow for a subset
|
|
* (or the whole) of the maintained selection to become unselected.
|
|
* Primary use: double click selecting then dragging on second click
|
|
* @param aAmount the initial amount of text selected (word, line or paragraph).
|
|
* For "line", use eSelectBeginLine.
|
|
*/
|
|
nsresult MaintainSelection(nsSelectionAmount aAmount = eSelectNoAmount);
|
|
|
|
nsresult ConstrainFrameAndPointToAnchorSubtree(nsIFrame* aFrame,
|
|
const nsPoint& aPoint,
|
|
nsIFrame** aRetFrame,
|
|
nsPoint& aRetPoint);
|
|
|
|
nsFrameSelection();
|
|
|
|
void StartBatchChanges();
|
|
void EndBatchChanges(int16_t aReason = nsISelectionListener::NO_REASON);
|
|
|
|
/*unsafe*/
|
|
nsresult DeleteFromDocument();
|
|
|
|
nsIPresShell *GetShell()const { return mShell; }
|
|
|
|
void DisconnectFromPresShell();
|
|
nsresult ClearNormalSelection();
|
|
|
|
private:
|
|
~nsFrameSelection();
|
|
|
|
nsresult TakeFocus(nsIContent *aNewFocus,
|
|
uint32_t aContentOffset,
|
|
uint32_t aContentEndOffset,
|
|
CaretAssociateHint aHint,
|
|
bool aContinueSelection,
|
|
bool aMultipleSelection);
|
|
|
|
void BidiLevelFromMove(nsIPresShell* aPresShell,
|
|
nsIContent *aNode,
|
|
uint32_t aContentOffset,
|
|
nsSelectionAmount aAmount,
|
|
CaretAssociateHint aHint);
|
|
void BidiLevelFromClick(nsIContent *aNewFocus, uint32_t aContentOffset);
|
|
nsPrevNextBidiLevels GetPrevNextBidiLevels(nsIContent *aNode,
|
|
uint32_t aContentOffset,
|
|
CaretAssociateHint aHint,
|
|
bool aJumpLines) const;
|
|
|
|
bool AdjustForMaintainedSelection(nsIContent *aContent, int32_t aOffset);
|
|
|
|
// post and pop reasons for notifications. we may stack these later
|
|
void PostReason(int16_t aReason) { mSelectionChangeReason = aReason; }
|
|
int16_t PopReason()
|
|
{
|
|
int16_t retval = mSelectionChangeReason;
|
|
mSelectionChangeReason = nsISelectionListener::NO_REASON;
|
|
return retval;
|
|
}
|
|
bool IsUserSelectionReason() const
|
|
{
|
|
return (mSelectionChangeReason &
|
|
(nsISelectionListener::DRAG_REASON |
|
|
nsISelectionListener::MOUSEDOWN_REASON |
|
|
nsISelectionListener::MOUSEUP_REASON |
|
|
nsISelectionListener::KEYPRESS_REASON)) !=
|
|
nsISelectionListener::NO_REASON;
|
|
}
|
|
|
|
friend class mozilla::dom::Selection;
|
|
friend class mozilla::dom::SelectionChangeListener;
|
|
friend struct mozilla::AutoPrepareFocusRange;
|
|
#ifdef DEBUG
|
|
void printSelection(); // for debugging
|
|
#endif /* DEBUG */
|
|
|
|
void ResizeBuffer(uint32_t aNewBufSize);
|
|
|
|
/*HELPER METHODS*/
|
|
// Whether MoveCaret should use logical or visual movement,
|
|
// or follow the bidi.edit.caret_movement_style preference.
|
|
enum CaretMovementStyle {
|
|
eLogical,
|
|
eVisual,
|
|
eUsePrefStyle
|
|
};
|
|
nsresult MoveCaret(nsDirection aDirection, bool aContinueSelection,
|
|
nsSelectionAmount aAmount,
|
|
CaretMovementStyle aMovementStyle);
|
|
|
|
nsresult FetchDesiredPos(nsPoint &aDesiredPos); //the position requested by the Key Handling for up down
|
|
void InvalidateDesiredPos(); //do not listen to mDesiredPos you must get another.
|
|
void SetDesiredPos(nsPoint aPos); //set the mDesiredPos
|
|
|
|
uint32_t GetBatching() const {return mBatching; }
|
|
bool GetNotifyFrames() const { return mNotifyFrames; }
|
|
void SetDirty(bool aDirty=true){if (mBatching) mChangesDuringBatching = aDirty;}
|
|
|
|
// nsFrameSelection may get deleted when calling this,
|
|
// so remember to use nsCOMPtr when needed.
|
|
nsresult NotifySelectionListeners(mozilla::SelectionType aSelectionType);
|
|
// Update the selection cache on repaint when the
|
|
// selection being repainted is not empty.
|
|
nsresult UpdateSelectionCacheOnRepaintSelection(mozilla::dom::
|
|
Selection* aSel);
|
|
|
|
// Table selection support.
|
|
nsITableCellLayout* GetCellLayout(nsIContent *aCellContent) const;
|
|
|
|
nsresult SelectBlockOfCells(nsIContent *aStartNode, nsIContent *aEndNode);
|
|
nsresult SelectRowOrColumn(nsIContent *aCellContent,
|
|
mozilla::TableSelection aTarget);
|
|
nsresult UnselectCells(nsIContent *aTable,
|
|
int32_t aStartRowIndex, int32_t aStartColumnIndex,
|
|
int32_t aEndRowIndex, int32_t aEndColumnIndex,
|
|
bool aRemoveOutsideOfCellRange);
|
|
|
|
nsresult GetCellIndexes(nsIContent *aCell, int32_t &aRowIndex, int32_t &aColIndex);
|
|
|
|
// Get our first range, if its first selected node is a cell. If this does
|
|
// not return null, then the first node in the returned range is a cell
|
|
// (according to GetFirstCellNodeInRange).
|
|
nsRange* GetFirstCellRange();
|
|
// Get our next range, if its first selected node is a cell. If this does
|
|
// not return null, then the first node in the returned range is a cell
|
|
// (according to GetFirstCellNodeInRange).
|
|
nsRange* GetNextCellRange();
|
|
nsIContent* GetFirstCellNodeInRange(nsRange *aRange) const;
|
|
// Returns non-null table if in same table, null otherwise
|
|
nsIContent* IsInSameTable(nsIContent *aContent1, nsIContent *aContent2) const;
|
|
// Might return null
|
|
nsIContent* GetParentTable(nsIContent *aCellNode) const;
|
|
nsresult CreateAndAddRange(nsINode* aContainer, int32_t aOffset);
|
|
|
|
////////////BEGIN nsFrameSelection members
|
|
|
|
RefPtr<mozilla::dom::Selection>
|
|
mDomSelections[
|
|
sizeof(mozilla::kPresentSelectionTypes) / sizeof(mozilla::SelectionType)];
|
|
|
|
nsCOMPtr<nsINode> mCellParent; //used to snap to table selection
|
|
nsCOMPtr<nsIContent> mStartSelectedCell;
|
|
nsCOMPtr<nsIContent> mEndSelectedCell;
|
|
nsCOMPtr<nsIContent> mAppendStartSelectedCell;
|
|
nsCOMPtr<nsIContent> mUnselectCellOnMouseUp;
|
|
mozilla::TableSelection mSelectingTableCellMode = mozilla::TableSelection::None;
|
|
int32_t mSelectedCellIndex = 0;
|
|
|
|
// maintain selection
|
|
RefPtr<nsRange> mMaintainRange;
|
|
nsSelectionAmount mMaintainedAmount = eSelectNoAmount;
|
|
|
|
//batching
|
|
int32_t mBatching = 0;
|
|
|
|
// Limit selection navigation to a child of this node.
|
|
nsCOMPtr<nsIContent> mLimiter;
|
|
// Limit selection navigation to a descendant of this node.
|
|
nsCOMPtr<nsIContent> mAncestorLimiter;
|
|
|
|
nsIPresShell* mShell = nullptr;
|
|
// Reason for notifications of selection changing.
|
|
int16_t mSelectionChangeReason = nsISelectionListener::NO_REASON;
|
|
// For visual display purposes.
|
|
int16_t mDisplaySelection = nsISelectionController::SELECTION_OFF;
|
|
|
|
// Hint to tell if the selection is at the end of this line or beginning of next.
|
|
CaretAssociateHint mHint = mozilla::CARET_ASSOCIATE_BEFORE;
|
|
nsBidiLevel mCaretBidiLevel = BIDI_LEVEL_UNDEFINED;
|
|
nsBidiLevel mKbdBidiLevel = NSBIDI_LTR;
|
|
|
|
nsPoint mDesiredPos;
|
|
bool mDelayedMouseEventValid = false;
|
|
// These values are not used since they are only valid when
|
|
// mDelayedMouseEventValid is true, and setting mDelayedMouseEventValid
|
|
// always overrides these values.
|
|
uint32_t mDelayedMouseEventClickCount = 0;
|
|
bool mDelayedMouseEventIsShift = false;
|
|
|
|
bool mChangesDuringBatching = false;
|
|
bool mNotifyFrames = true;
|
|
bool mDragSelectingCells = false;
|
|
bool mDragState = false; //for drag purposes
|
|
bool mMouseDoubleDownState = false; //has the doubleclick down happened
|
|
bool mDesiredPosSet = false;
|
|
bool mAccessibleCaretEnabled = false;
|
|
|
|
int8_t mCaretMovementStyle = 0;
|
|
|
|
static bool sSelectionEventsEnabled;
|
|
static bool sSelectionEventsOnTextControlsEnabled;
|
|
};
|
|
|
|
#endif /* nsFrameSelection_h___ */
|