/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Original Author: Michael F. Judge (mjudge@netscape.com) */ /* * Implementation of selection: nsIDOMSelection and nsIFrameSelection */ #include "nsCOMPtr.h" #include "nsWeakReference.h" #include "nsIFactory.h" #include "nsIEnumerator.h" #include "nsIDOMRange.h" #include "nsIFrameSelection.h" #include "nsIDOMSelection.h" #include "nsIDOMSelectionListener.h" #include "nsIFocusTracker.h" #include "nsIComponentManager.h" #include "nsLayoutCID.h" #include "nsIContent.h" #include "nsIDOMElement.h" #include "nsIDOMNode.h" #include "nsRange.h" #include "nsISupportsArray.h" #include "nsIDOMKeyEvent.h" #include "nsITableLayout.h" #include "nsITableCellLayout.h" #include "nsIDOMSelectionListener.h" #include "nsIContentIterator.h" #include "nsIDocumentEncoder.h" #include "nsIDOMText.h" //included for desired x position; #include "nsIPresContext.h" #include "nsIPresShell.h" #include "nsICaret.h" #include "nsIScriptObjectOwner.h" #include "nsIScriptGlobalObject.h" // included for view scrolling #include "nsIViewManager.h" #include "nsIScrollableView.h" #include "nsIDeviceContext.h" #include "nsITimer.h" #include "nsITimerCallback.h" #include "nsIServiceManager.h" #include "nsIAutoCopy.h" //nodtifications #include "nsIDOMDocument.h" #include "nsIDocument.h" #include "nsISelectionController.h"//for the enums #define STATUS_CHECK_RETURN_MACRO() {if (!mTracker) return NS_ERROR_FAILURE;} //#define DEBUG_TABLE 1 //static NS_DEFINE_IID(kCContentIteratorCID, NS_CONTENTITERATOR_CID); static NS_DEFINE_IID(kCGenContentIteratorCID, NS_GENERATEDCONTENTITERATOR_CID); static NS_DEFINE_IID(kCGenSubtreeIteratorCID, NS_GENERATEDSUBTREEITERATOR_CID); static NS_DEFINE_IID(kCSubtreeIteratorCID, NS_SUBTREEITERATOR_CID); //PROTOTYPES #if OLD_SELECTION static nsCOMPtr GetTag(nsIDOMNode *aNode); static nsresult ParentOffset(nsIDOMNode *aNode, nsIDOMNode **aParent, PRInt32 *aChildOffset); #endif #ifdef PRINT_RANGE static void printRange(nsIDOMRange *aDomRange); #define DEBUG_OUT_RANGE(x) printRange(x) #else #define DEBUG_OUT_RANGE(x) #endif //MOZ_DEBUG #define OLD_SELECTION 0 //#define DEBUG_SELECTION // uncomment for printf describing every collapse and extend. //#define DEBUG_NAVIGATION class nsSelectionIterator; class nsSelection; class nsAutoScrollTimer; class nsDOMSelection : public nsIDOMSelection , public nsIScriptObjectOwner, public nsSupportsWeakReference { public: nsDOMSelection(); nsDOMSelection(nsSelection *aList); virtual ~nsDOMSelection(); NS_DECL_ISUPPORTS /*BEGIN nsIDOMSelection interface implementations*/ NS_IMETHOD GetAnchorNode(nsIDOMNode** aAnchorNode); NS_IMETHOD GetAnchorOffset(PRInt32* aAnchorOffset); NS_IMETHOD GetFocusNode(nsIDOMNode** aFocusNode); NS_IMETHOD GetFocusOffset(PRInt32* aFocusOffset); NS_IMETHOD GetIsCollapsed(PRBool* aIsCollapsed); NS_IMETHOD GetRangeCount(PRInt32* aRangeCount); NS_IMETHOD GetRangeAt(PRInt32 aIndex, nsIDOMRange** aReturn); NS_IMETHOD ClearSelection(); NS_IMETHOD Collapse(nsIDOMNode* aParentNode, PRInt32 aOffset); NS_IMETHOD CollapseToStart(); NS_IMETHOD CollapseToEnd(); NS_IMETHOD Extend(nsIDOMNode* aParentNode, PRInt32 aOffset); NS_IMETHOD ContainsNode(nsIDOMNode* aNode, PRBool aRecursive, PRBool* aAYes); NS_IMETHOD DeleteFromDocument(); NS_IMETHOD AddRange(nsIDOMRange* aRange); NS_IMETHOD RemoveRange(nsIDOMRange* aRange); NS_IMETHOD StartBatchChanges(); NS_IMETHOD EndBatchChanges(); NS_IMETHOD AddSelectionListener(nsIDOMSelectionListener* aNewListener); NS_IMETHOD RemoveSelectionListener(nsIDOMSelectionListener* aListenerToRemove); NS_IMETHOD GetEnumerator(nsIEnumerator **aIterator); NS_IMETHOD ToString(nsString& aReturn); NS_IMETHOD SetHint(PRBool aHintRight); NS_IMETHOD GetHint(PRBool *aHintRight); /*END nsIDOMSelection interface implementations*/ /*BEGIN nsIScriptObjectOwner interface implementations*/ NS_IMETHOD GetScriptObject(nsIScriptContext *aContext, void** aScriptObject); NS_IMETHOD SetScriptObject(void *aScriptObject); /*END nsIScriptObjectOwner interface implementations*/ // utility methods for scrolling the selection into view nsresult GetPresContext(nsIPresContext **aPresContext); nsresult GetPresShell(nsIPresShell **aPresShell); nsresult GetRootScrollableView(nsIScrollableView **aScrollableView); nsresult GetFrameToRootViewOffset(nsIFrame *aFrame, nscoord *aXOffset, nscoord *aYOffset); nsresult GetPointFromOffset(nsIFrame *aFrame, PRInt32 aContentOffset, nsPoint *aPoint); nsresult GetSelectionRegionRect(SelectionRegion aRegion, nsRect *aRect); nsresult ScrollRectIntoView(nsRect& aRect, PRIntn aVPercent, PRIntn aHPercent); NS_IMETHOD ScrollIntoView(SelectionRegion aRegion=nsISelectionController::SELECTION_FOCUS_REGION); nsresult AddItem(nsIDOMRange *aRange); nsresult RemoveItem(nsIDOMRange *aRange); nsresult Clear(nsIPresContext* aPresContext); // methods for convenience. Note, these don't addref nsIDOMNode* FetchAnchorNode(); //where did the selection begin PRInt32 FetchAnchorOffset(); nsIDOMNode* FetchOriginalAnchorNode(); //where did the ORIGINAL selection begin PRInt32 FetchOriginalAnchorOffset(); nsIDOMNode* FetchFocusNode(); //where is the carret PRInt32 FetchFocusOffset(); nsIDOMNode* FetchStartParent(nsIDOMRange *aRange); //skip all the com stuff and give me the start/end PRInt32 FetchStartOffset(nsIDOMRange *aRange); nsIDOMNode* FetchEndParent(nsIDOMRange *aRange); //skip all the com stuff and give me the start/end PRInt32 FetchEndOffset(nsIDOMRange *aRange); nsDirection GetDirection(){return mDirection;} void SetDirection(nsDirection aDir){mDirection = aDir;} NS_IMETHOD CopyRangeToAnchorFocus(nsIDOMRange *aRange); // NS_IMETHOD GetPrimaryFrameForRangeEndpoint(nsIDOMNode *aNode, PRInt32 aOffset, PRBool aIsEndNode, nsIFrame **aResultFrame); NS_IMETHOD GetPrimaryFrameForAnchorNode(nsIFrame **aResultFrame); NS_IMETHOD GetPrimaryFrameForFocusNode(nsIFrame **aResultFrame); NS_IMETHOD SetOriginalAnchorPoint(nsIDOMNode *aNode, PRInt32 aOffset); NS_IMETHOD GetOriginalAnchorPoint(nsIDOMNode **aNode, PRInt32 *aOffset); NS_IMETHOD LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength, SelectionDetails **aReturnDetails, SelectionType aType, PRBool aSlowCheck); NS_IMETHOD Repaint(nsIPresContext* aPresContext); nsresult StartAutoScrollTimer(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint, PRUint32 aDelay); nsresult StopAutoScrollTimer(); nsresult DoAutoScroll(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint); SelectionType GetType(){return mType;} void SetType(SelectionType aType){mType = aType;} nsresult NotifySelectionListeners(); private: friend class nsSelectionIterator; void setAnchorFocusRange(PRInt32 aIndex); //pass in index into FrameSelection NS_IMETHOD selectFrames(nsIPresContext* aPresContext, nsIContentIterator *aInnerIter, nsIContent *aContent, nsIDOMRange *aRange, nsIPresShell *aPresShell, PRBool aFlags); NS_IMETHOD selectFrames(nsIPresContext* aPresContext, nsIDOMRange *aRange, PRBool aSelect); #if OLD_SELECTION NS_IMETHOD FixupSelectionPoints(nsIDOMRange *aRange, nsDirection *aDir, PRBool *aFixupState); #endif //OLD_SELECTION nsCOMPtr mRangeArray; nsCOMPtr mAnchorFocusRange; nsCOMPtr mOriginalAnchorRange; //used as a point with range gravity for security nsDirection mDirection; //FALSE = focus, anchor; TRUE = anchor,focus PRBool mFixupState; //was there a fixup? nsSelection *mFrameSelection; // for nsIScriptObjectOwner void* mScriptObject; SelectionType mType;//type of this nsDOMSelection; nsAutoScrollTimer *mAutoScrollTimer; // timer for autoscrolling. nsCOMPtr mSelectionListeners; }; // Stack-class to turn on/off selection batching for table selection class nsSelectionBatcher { private: nsCOMPtr mSelection; public: nsSelectionBatcher(nsIDOMSelection *aSelection) : mSelection(aSelection) { if (mSelection) mSelection->StartBatchChanges(); } virtual ~nsSelectionBatcher() { if (mSelection) mSelection->EndBatchChanges(); } }; class nsSelection : public nsIFrameSelection { public: /*interfaces for addref and release and queryinterface*/ NS_DECL_ISUPPORTS /*BEGIN nsIFrameSelection interfaces*/ NS_IMETHOD Init(nsIFocusTracker *aTracker, nsIContent *aLimiter); NS_IMETHOD ShutDown(); NS_IMETHOD HandleTextEvent(nsGUIEvent *aGUIEvent); NS_IMETHOD HandleKeyEvent(nsIPresContext* aPresContext, nsGUIEvent *aGuiEvent); NS_IMETHOD HandleClick(nsIContent *aNewFocus, PRUint32 aContentOffset, PRUint32 aContentEndOffset, PRBool aContinueSelection, PRBool aMultipleSelection,PRBool aHint); NS_IMETHOD HandleDrag(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint); NS_IMETHOD HandleTableSelection(nsIContent *aParentContent, PRInt32 aContentOffset, PRUint32 aTarget, nsMouseEvent *aMouseEvent); NS_IMETHOD StartAutoScrollTimer(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint, PRUint32 aDelay); NS_IMETHOD StopAutoScrollTimer(); NS_IMETHOD EnableFrameNotification(PRBool aEnable){mNotifyFrames = aEnable; return NS_OK;} NS_IMETHOD LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength, SelectionDetails **aReturnDetails, PRBool aSlowCheck); NS_IMETHOD SetMouseDownState(PRBool aState); NS_IMETHOD GetMouseDownState(PRBool *aState); NS_IMETHOD GetTableCellSelection(PRBool *aState){if (aState){*aState = mSelectingTableCellMode; return NS_OK;}return NS_ERROR_NULL_POINTER;} NS_IMETHOD GetTableCellSelectionStyleColor(const nsStyleColor **aStyleColor); NS_IMETHOD GetSelection(SelectionType aType, nsIDOMSelection **aDomSelection); NS_IMETHOD ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion); NS_IMETHOD RepaintSelection(nsIPresContext* aPresContext, SelectionType aType); NS_IMETHOD GetFrameForNodeOffset(nsIContent *aNode, PRInt32 aOffset, nsIFrame **aReturnFrame, PRInt32 *aReturnOffset); NS_IMETHOD CharacterMove(PRBool aForward, PRBool aExtend); NS_IMETHOD WordMove(PRBool aForward, PRBool aExtend); NS_IMETHOD LineMove(PRBool aForward, PRBool aExtend); NS_IMETHOD IntraLineMove(PRBool aForward, PRBool aExtend); NS_IMETHOD SelectAll(); NS_IMETHOD SetDisplaySelection(PRInt16 aState); NS_IMETHOD GetDisplaySelection(PRInt16 *aState); /*END nsIFrameSelection interfacse*/ nsSelection(); virtual ~nsSelection(); NS_IMETHOD StartBatchChanges(); NS_IMETHOD EndBatchChanges(); NS_IMETHOD DeleteFromDocument(); nsIFocusTracker *GetTracker(){return mTracker;} private: NS_IMETHOD TakeFocus(nsIContent *aNewFocus, PRUint32 aContentOffset, PRUint32 aContentEndOffset, PRBool aContinueSelection, PRBool aMultipleSelection); friend class nsDOMSelection; #ifdef DEBUG void printSelection(); // for debugging #endif /* DEBUG */ void ResizeBuffer(PRUint32 aNewBufSize); /*HELPER METHODS*/ nsresult MoveCaret(PRUint32 aKeycode, PRBool aContinue, nsSelectionAmount aAmount); nscoord FetchDesiredX(); //the x position requested by the Key Handling for up down void InvalidateDesiredX(); //do not listen to mDesiredX you must get another. void SetDesiredX(nscoord aX); //set the mDesiredX nsresult GetRootForContentSubtree(nsIContent *aContent, nsIContent **aParent); nsresult GetGlobalViewOffsetsFromFrame(nsIPresContext *aPresContext, nsIFrame *aFrame, nscoord *offsetX, nscoord *offsetY); nsresult ConstrainFrameAndPointToAnchorSubtree(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint, nsIFrame **aRetFrame, nsPoint& aRetPoint); PRUint32 GetBatching(){return mBatching;} PRBool GetNotifyFrames(){return mNotifyFrames;} void SetDirty(PRBool aDirty=PR_TRUE){if (mBatching) mChangesDuringBatching = aDirty;} nsresult NotifySelectionListeners(SelectionType aType); // add parameters to say collapsed etc? NS_IMETHOD SetHint(PRBool aHintRight); NS_IMETHOD GetHint(PRBool *aHintRight); nsDOMSelection *mDomSelections[nsISelectionController::NUM_SELECTIONTYPES]; // Table selection support. Unfortunately, we can't get at nsITableCellLayout // and nsITableLayout through nsIFrame, so we have to duplicate editor code here nsresult SelectBlockOfCells(nsIContent *aEndNode); nsresult GetCellIndexes(nsIContent *aCell, PRInt32 &aRowIndex, PRInt32 &aColIndex); nsresult GetFirstSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange); nsresult GetNextSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange); nsresult GetFirstCellNodeInRange(nsIDOMRange *aRange, nsIDOMNode **aCellNode); // aTableNode may be null if table isn't needed to be returned PRBool IsInSameTable(nsIContent *aContent1, nsIContent *aContent2, nsIContent **aTableNode); nsresult GetParentTable(nsIContent *aCellNode, nsIContent **aTableNode); nsresult CreateAndAddRange(nsIDOMNode *aParentNode, PRInt32 aOffset); nsCOMPtr mStartSelectedCell; nsCOMPtr mEndSelectedCell; PRBool mSelectingTableCells; PRBool mSelectingTableCellMode; PRInt32 mSelectedCellIndex; //batching PRInt32 mBatching; PRBool mChangesDuringBatching; PRBool mNotifyFrames; nsIContent *mLimiter; //limit selection navigation to a child of this node. nsIFocusTracker *mTracker; PRBool mMouseDownState; //for drag purposes PRInt16 mDisplaySelection; //for visual display purposes. PRInt32 mDesiredX; PRBool mDesiredXSet; enum HINT {HINTLEFT=0,HINTRIGHT=1}mHint;//end of this line or beginning of next public: static nsIAtom *sTableAtom; static nsIAtom *sCellAtom; static nsIAtom *sTbodyAtom; static PRInt32 sInstanceCount; static nsStyleColor sTableStyleColor; }; class nsSelectionIterator : public nsIBidirectionalEnumerator { public: /*BEGIN nsIEnumerator interfaces see the nsIEnumerator for more details*/ NS_DECL_ISUPPORTS NS_DECL_NSIENUMERATOR NS_DECL_NSIBIDIRECTIONALENUMERATOR /*END nsIEnumerator interfaces*/ /*BEGIN Helper Methods*/ NS_IMETHOD CurrentItem(nsIDOMRange **aRange); /*END Helper Methods*/ private: friend class nsDOMSelection; //lame lame lame if delete from document goes away then get rid of this unless its debug friend class nsSelection; nsSelectionIterator(nsDOMSelection *); virtual ~nsSelectionIterator(); PRInt32 mIndex; nsDOMSelection *mDomSelection; SelectionType mType; }; class nsAutoScrollTimer : public nsITimerCallback { public: NS_DECL_ISUPPORTS nsAutoScrollTimer() : mSelection(0), mTimer(0), mFrame(0), mPresContext(0), mPoint(0,0), mScrollPoint(0,0), mDelay(30) { NS_INIT_ISUPPORTS(); } virtual ~nsAutoScrollTimer() { if (mTimer) { mTimer->Cancel(); NS_RELEASE(mTimer); } } nsresult Start(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint &aPoint) { mFrame = aFrame; mPresContext = aPresContext; mPoint = aPoint; if (!mTimer) { nsresult result = NS_NewTimer(&mTimer); if (NS_FAILED(result)) return result; } return mTimer->Init(this, mDelay); } nsresult Stop() { nsresult result = NS_OK; if (mTimer) { mTimer->Cancel(); NS_RELEASE(mTimer); mTimer = 0; } return result; } nsresult Init(nsSelection *aFrameSelection, nsDOMSelection *aSelection) { mFrameSelection = aFrameSelection; mSelection = aSelection; return NS_OK; } nsresult SetDelay(PRUint32 aDelay) { mDelay = aDelay; return NS_OK; } NS_IMETHOD_(void) Notify(nsITimer *timer) { if (mSelection && mPresContext && mFrame) { //the frame passed in here will be a root frame for the view. there is no need to call the constrain //method here. the root frame has NO content now unfortunately... PRInt32 startPos = 0; PRInt32 contentOffsetEnd = 0; PRBool beginOfContent; nsCOMPtr newContent; nsresult result = mFrame->GetContentAndOffsetsFromPoint(mPresContext, mPoint, getter_AddRefs(newContent), startPos, contentOffsetEnd,beginOfContent); if (NS_SUCCEEDED(result)) { result = mFrameSelection->HandleClick(newContent, startPos, contentOffsetEnd , PR_TRUE, PR_FALSE, beginOfContent); } //mFrameSelection->HandleDrag(mPresContext, mFrame, mPoint); mSelection->DoAutoScroll(mPresContext, mFrame, mPoint); } } private: nsSelection *mFrameSelection; nsDOMSelection *mSelection; nsITimer *mTimer; nsIFrame *mFrame; nsIPresContext *mPresContext; nsPoint mPoint; nsPoint mScrollPoint; PRUint32 mDelay; }; NS_IMPL_ADDREF(nsAutoScrollTimer) NS_IMPL_RELEASE(nsAutoScrollTimer) NS_IMPL_QUERY_INTERFACE1(nsAutoScrollTimer, nsITimerCallback) nsresult NS_NewAutoScrollTimer(nsAutoScrollTimer **aResult) { if (!aResult) return NS_ERROR_NULL_POINTER; *aResult = (nsAutoScrollTimer*) new nsAutoScrollTimer; if (!aResult) return NS_ERROR_OUT_OF_MEMORY; NS_ADDREF(*aResult); return NS_OK; } nsresult NS_NewSelection(nsIFrameSelection **aFrameSelection); nsresult NS_NewSelection(nsIFrameSelection **aFrameSelection) { nsSelection *rlist = new nsSelection; if (!rlist) return NS_ERROR_OUT_OF_MEMORY; *aFrameSelection = (nsIFrameSelection *)rlist; rlist->AddRef(); return NS_OK; } nsresult NS_NewDomSelection(nsIDOMSelection **aDomSelection); nsresult NS_NewDomSelection(nsIDOMSelection **aDomSelection) { nsDOMSelection *rlist = new nsDOMSelection; if (!rlist) return NS_ERROR_OUT_OF_MEMORY; *aDomSelection = (nsIDOMSelection *)rlist; rlist->AddRef(); return NS_OK; } //Horrible statics but no choice nsIAtom *nsSelection::sTableAtom = 0; nsIAtom *nsSelection::sCellAtom = 0; nsIAtom *nsSelection::sTbodyAtom = 0; PRInt32 nsSelection::sInstanceCount = 0; nsStyleColor nsSelection::sTableStyleColor; static PRInt8 GetIndexFromSelectionType(SelectionType aType) { switch (aType) { case nsISelectionController::SELECTION_NORMAL: return 0; break; case nsISelectionController::SELECTION_SPELLCHECK: return 1; break; case nsISelectionController::SELECTION_IME_RAWINPUT: return 2; break; case nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT: return 3; break; case nsISelectionController::SELECTION_IME_CONVERTEDTEXT: return 4; break; case nsISelectionController::SELECTION_IME_SELECTEDCONVERTEDTEXT: return 5; break; default:return -1;break; } } static SelectionType GetSelectionTypeFromIndex(PRInt8 aIndex) { switch (aIndex) { case 0: return nsISelectionController::SELECTION_NORMAL;break; case 1: return nsISelectionController::SELECTION_SPELLCHECK;break; case 2: return nsISelectionController::SELECTION_IME_RAWINPUT;break; case 3: return nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT;break; case 4: return nsISelectionController::SELECTION_IME_CONVERTEDTEXT;break; case 5: return nsISelectionController::SELECTION_IME_SELECTEDCONVERTEDTEXT;break; default: return nsISelectionController::SELECTION_NORMAL;break; } } ///////////BEGIN nsSelectionIterator methods nsSelectionIterator::nsSelectionIterator(nsDOMSelection *aList) :mIndex(0) { NS_INIT_REFCNT(); if (!aList) { NS_NOTREACHED("nsSelection"); return; } mDomSelection = aList; } nsSelectionIterator::~nsSelectionIterator() { } ////////////END nsSelectionIterator methods ////////////BEGIN nsIFrameSelectionIterator methods NS_IMETHODIMP nsSelectionIterator::Next() { mIndex++; PRUint32 cnt; nsresult rv = mDomSelection->mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (mIndex < (PRInt32)cnt) return NS_OK; return NS_ERROR_FAILURE; } NS_IMETHODIMP nsSelectionIterator::Prev() { mIndex--; if (mIndex >= 0 ) return NS_OK; return NS_ERROR_FAILURE; } NS_IMETHODIMP nsSelectionIterator::First() { if (!mDomSelection) return NS_ERROR_NULL_POINTER; mIndex = 0; return NS_OK; } NS_IMETHODIMP nsSelectionIterator::Last() { if (!mDomSelection) return NS_ERROR_NULL_POINTER; PRUint32 cnt; nsresult rv = mDomSelection->mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; mIndex = (PRInt32)cnt-1; return NS_OK; } NS_IMETHODIMP nsSelectionIterator::CurrentItem(nsISupports **aItem) { if (!aItem) return NS_ERROR_NULL_POINTER; PRUint32 cnt; nsresult rv = mDomSelection->mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (mIndex >=0 && mIndex < (PRInt32)cnt){ *aItem = mDomSelection->mRangeArray->ElementAt(mIndex); return NS_OK; } return NS_ERROR_FAILURE; } NS_IMPL_ADDREF(nsSelectionIterator) NS_IMPL_RELEASE(nsSelectionIterator) NS_IMETHODIMP nsSelectionIterator::CurrentItem(nsIDOMRange **aItem) { if (!aItem) return NS_ERROR_NULL_POINTER; PRUint32 cnt; nsresult rv = mDomSelection->mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (mIndex >=0 && mIndex < (PRInt32)cnt){ nsCOMPtr indexIsupports = dont_AddRef(mDomSelection->mRangeArray->ElementAt(mIndex)); return indexIsupports->QueryInterface(NS_GET_IID(nsIDOMRange),(void **)aItem); } return NS_ERROR_FAILURE; } NS_IMETHODIMP nsSelectionIterator::IsDone() { PRUint32 cnt; nsresult rv = mDomSelection->mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (mIndex >= 0 && mIndex < (PRInt32)cnt ) { return NS_ENUMERATOR_FALSE; } return NS_OK; } NS_IMETHODIMP nsSelectionIterator::QueryInterface(REFNSIID aIID, void** aInstancePtr) { if (nsnull == aInstancePtr) { return NS_ERROR_NULL_POINTER; } if (aIID.Equals(NS_GET_IID(nsIEnumerator))) { *aInstancePtr = NS_STATIC_CAST(nsIEnumerator*, this); NS_ADDREF_THIS(); return NS_OK; } if (aIID.Equals(NS_GET_IID(nsIBidirectionalEnumerator))) { *aInstancePtr = NS_STATIC_CAST(nsIBidirectionalEnumerator*, this); NS_ADDREF_THIS(); return NS_OK; } return mDomSelection->QueryInterface(aIID, aInstancePtr); } ////////////END nsIFrameSelectionIterator methods #ifdef XP_MAC #pragma mark - #endif ////////////BEGIN nsSelection methods nsSelection::nsSelection() { NS_INIT_REFCNT(); PRInt32 i; for (i = 0;iAddRef(); mDomSelections[i]->SetType(GetSelectionTypeFromIndex(i)); } mBatching = 0; mChangesDuringBatching = PR_FALSE; mNotifyFrames = PR_TRUE; mLimiter = nsnull; //no default limiter. if (sInstanceCount <= 0) { sTableAtom = NS_NewAtom("table"); sCellAtom = NS_NewAtom("td"); sTbodyAtom = NS_NewAtom("tbody"); sTableStyleColor.mColor = NS_RGB(128,0,0); sTableStyleColor.mBackgroundColor = NS_RGB(128,0,0); sTableStyleColor.mOpacity= (float)1; sTableStyleColor.mBackgroundAttachment=0; sTableStyleColor.mBackgroundFlags=NS_STYLE_BG_IMAGE_NONE; sTableStyleColor.mBackgroundRepeat=1; sTableStyleColor.mBackgroundXPosition=0; sTableStyleColor.mBackgroundYPosition=0; sTableStyleColor.mCursor=1; } mHint = HINTLEFT; sInstanceCount ++; mSelectingTableCells = PR_FALSE; mSelectingTableCellMode = PR_FALSE; mSelectedCellIndex = 0; //AUTO COPY REGISTRATION nsresult rv; NS_WITH_SERVICE(nsIAutoCopyService, autoCopyService, "component://netscape/autocopy", &rv); if (NS_SUCCEEDED(rv) && autoCopyService) { PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); if (mDomSelections[index]) autoCopyService->Listen(mDomSelections[index]); } mDisplaySelection = nsISelectionController::SELECTION_OFF; } nsSelection::~nsSelection() { if (sInstanceCount <= 1) { NS_IF_RELEASE(sTableAtom); NS_IF_RELEASE(sCellAtom); NS_IF_RELEASE(sTbodyAtom); } PRInt32 i; for (i = 0;i caret; nsCOMPtr context; nsCOMPtr shell; nsresult result = mTracker->GetPresContext(getter_AddRefs(context)); if (NS_FAILED(result) || !context) return result; result = context->GetShell(getter_AddRefs(shell)); if (NS_FAILED(result) || !shell) return result; result = shell->GetCaret(getter_AddRefs(caret)); if (NS_FAILED(result) || !caret) return result; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); result = caret->GetWindowRelativeCoordinates(coord,collapsed,mDomSelections[index]); if (NS_FAILED(result)) return result; return coord.x; } } void nsSelection::InvalidateDesiredX() //do not listen to mDesiredX you must get another. { mDesiredXSet = PR_FALSE; } void nsSelection::SetDesiredX(nscoord aX) //set the mDesiredX { mDesiredX = aX; mDesiredXSet = PR_TRUE; } nsresult nsSelection::GetRootForContentSubtree(nsIContent *aContent, nsIContent **aParent) { // This method returns the root of the sub-tree containing aContent. // We do this by searching up through the parent hierarchy, and stopping // when there are no more parents, or we hit a situation where the // parent/child relationship becomes invalid. // // An example of an invalid parent/child relationship is anonymous content. // Anonymous content has a pointer to it's parent, but it is not listed // as a child of it's parent. In this case, the anonymous content would // be considered the root of the subtree. nsresult result = NS_OK; if (!aContent || !aParent) return NS_ERROR_NULL_POINTER; *aParent = 0; nsCOMPtr parent = do_QueryInterface(aContent); nsCOMPtr child = parent; while (child) { result = child->GetParent(*getter_AddRefs(parent)); if (NS_FAILED(result)) return result; if (!parent) break; PRInt32 childIndex = 0; PRInt32 childCount = 0; result = parent->ChildCount(childCount); if (NS_FAILED(result)) return result; if (childCount < 1) break; result = parent->IndexOf(child, childIndex); if (NS_FAILED(result)) return result; if (childIndex < 0 || childIndex >= childCount) break; child = parent; } *aParent = child; NS_IF_ADDREF(*aParent); return result; } nsresult nsSelection::GetGlobalViewOffsetsFromFrame(nsIPresContext *aPresContext, nsIFrame *aFrame, nscoord *offsetX, nscoord *offsetY) { // // The idea here is to figure out what the offset of aFrame's view // is within the global space. Where I define the global space to // be the coordinate system that exists above all views. // // The offsets are calculated by walking up the view parent hierarchy, // adding up all the view positions, until there are no more views. // // A point in a view's coordinate space can be converted to the global // coordinate space by simply adding the offsets returned by this method // to the point itself. // if (!aPresContext || !aFrame || !offsetX || !offsetY) return NS_ERROR_NULL_POINTER; *offsetX = *offsetY = 0; nsresult result; nsIFrame *frame = aFrame; nsIView *view; while (frame) { result = frame->GetParentWithView(aPresContext, &frame); if (NS_FAILED(result)) return result; if (frame) { view = 0; result = frame->GetView(aPresContext, &view); if (NS_FAILED(result)) return result; if (view) { nscoord vX = 0, vY = 0; result = view->GetPosition(&vX, &vY); if (NS_FAILED(result)) return result; *offsetX += vX; *offsetY += vY; } } } return NS_OK; } nsresult nsSelection::ConstrainFrameAndPointToAnchorSubtree(nsIPresContext *aPresContext, 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 anchorNode; PRInt32 anchorOffset = 0; PRInt32 anchorFrameOffset = 0; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); 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; nsIFrame *anchorFrame = 0; nsCOMPtr anchorContent = do_QueryInterface(anchorNode); if (!anchorContent) return NS_ERROR_FAILURE; result = GetFrameForNodeOffset(anchorContent, anchorOffset, &anchorFrame, &anchorFrameOffset); // // Now find the root of the subtree containing the anchor's content. // nsCOMPtr anchorRoot; result = GetRootForContentSubtree(anchorContent, getter_AddRefs(anchorRoot)); if (NS_FAILED(result)) return result; // // Now find the root of the subtree containing aFrame's content. // nsCOMPtr content; result = aFrame->GetContent(getter_AddRefs(content)); if (NS_FAILED(result)) return result; if (content) { nsCOMPtr contentRoot; result = GetRootForContentSubtree(content, getter_AddRefs(contentRoot)); if (anchorRoot == contentRoot) { // // The anchor and AFrame's root are the same. There // is no need to constrain, simply return aFrame. // *aRetFrame = aFrame; return NS_OK; } } // // aFrame's root does not match the anchor's root, or there is no // content associated with aFrame. Just return the primary frame // for the anchor's root. We'll let GetContentAndOffsetsFromPoint() // find the closest frame aPoint. // result = mTracker->GetPrimaryFrameFor(anchorRoot, aRetFrame); if (NS_FAILED(result)) return result; if (! *aRetFrame) return NS_ERROR_FAILURE; // // Now make sure that aRetPoint is converted to the same coordinate // system used by aRetFrame. // nsPoint frameOffset; nsPoint retFrameOffset; result = GetGlobalViewOffsetsFromFrame(aPresContext, aFrame, &frameOffset.x, &frameOffset.y); if (NS_FAILED(result)) return result; result = GetGlobalViewOffsetsFromFrame(aPresContext, *aRetFrame, &retFrameOffset.x, &retFrameOffset.y); if (NS_FAILED(result)) return result; aRetPoint = aPoint + frameOffset - retFrameOffset; return NS_OK; } #ifdef XP_MAC #pragma mark - #endif #ifdef PRINT_RANGE void printRange(nsIDOMRange *aDomRange) { if (!aDomRange) { printf("NULL nsIDOMRange\n"); } nsCOMPtr startNode; nsCOMPtr endNode; PRInt32 startOffset; PRInt32 endOffset; aDomRange->GetStartParent(getter_AddRefs(startNode)); aDomRange->GetStartOffset(&startOffset); aDomRange->GetEndParent(getter_AddRefs(endNode)); aDomRange->GetEndOffset(&endOffset); printf("range: 0x%lx\t start: 0x%lx %ld, \t end: 0x%lx,%ld\n", (unsigned long)aDomRange, (unsigned long)(nsIDOMNode*)startNode, (long)startOffset, (unsigned long)(nsIDOMNode*)endNode, (long)endOffset); } #endif /* PRINT_RANGE */ #if OLD_SELECTION nsCOMPtr GetTag(nsIDOMNode *aNode) { nsCOMPtr atom; if (!aNode) { NS_NOTREACHED("null node passed to nsHTMLEditRules::GetTag()"); return atom; } nsCOMPtr content = do_QueryInterface(aNode); if (content) content->GetTag(*getter_AddRefs(atom)); return atom; } nsresult ParentOffset(nsIDOMNode *aNode, nsIDOMNode **aParent, PRInt32 *aChildOffset) { if (!aNode || !aParent || !aChildOffset) return NS_ERROR_NULL_POINTER; nsresult result = NS_OK; nsCOMPtr content; result = aNode->QueryInterface(NS_GET_IID(nsIContent),getter_AddRefs(content)); if (NS_SUCCEEDED(result) && content) { nsCOMPtr parent; result = content->GetParent(*getter_AddRefs(parent)); if (NS_SUCCEEDED(result) && parent) { result = parent->IndexOf(content, *aChildOffset); if (NS_SUCCEEDED(result)) result = parent->QueryInterface(NS_GET_IID(nsIDOMNode),(void **)aParent); } } return result; } #endif NS_IMETHODIMP nsSelection::Init(nsIFocusTracker *aTracker, nsIContent *aLimiter) { mTracker = aTracker; mMouseDownState = PR_FALSE; mDesiredXSet = PR_FALSE; mLimiter = aLimiter; return NS_OK; } NS_IMETHODIMP nsSelection::ShutDown() { return NS_OK; } NS_IMETHODIMP nsSelection::HandleTextEvent(nsGUIEvent *aGUIEvent) { if (!aGUIEvent) return NS_ERROR_NULL_POINTER; #ifdef DEBUG_TAGUE printf("nsSelection: HandleTextEvent\n"); #endif nsresult result(NS_OK); if (NS_TEXT_EVENT == aGUIEvent->message) { PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); result = mDomSelections[index]->ScrollIntoView(); } return result; } nsresult nsSelection::MoveCaret(PRUint32 aKeycode, PRBool aContinue, nsSelectionAmount aAmount) { nsCOMPtr context; nsresult result = mTracker->GetPresContext(getter_AddRefs(context)); if (NS_FAILED(result) || !context) return result?result:NS_ERROR_FAILURE; nsCOMPtr weakNodeUsed; PRInt32 offsetused = 0; PRBool isCollapsed; nscoord desiredX = 0; //we must keep this around and revalidate it when its just UP/DOWN PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); result = mDomSelections[index]->GetIsCollapsed(&isCollapsed); if (NS_FAILED(result)) return result; if (aKeycode == nsIDOMKeyEvent::DOM_VK_UP || aKeycode == nsIDOMKeyEvent::DOM_VK_DOWN) { desiredX= FetchDesiredX(); SetDesiredX(desiredX); } if (!isCollapsed && !aContinue) { switch (aKeycode){ case nsIDOMKeyEvent::DOM_VK_LEFT : case nsIDOMKeyEvent::DOM_VK_UP : { if ((mDomSelections[index]->GetDirection() == eDirPrevious)) { //f,a offsetused = mDomSelections[index]->FetchFocusOffset(); weakNodeUsed = mDomSelections[index]->FetchFocusNode(); } else { offsetused = mDomSelections[index]->FetchAnchorOffset(); weakNodeUsed = mDomSelections[index]->FetchAnchorNode(); } result = mDomSelections[index]->Collapse(weakNodeUsed,offsetused); mDomSelections[index]->ScrollIntoView(); return NS_OK; } break; case nsIDOMKeyEvent::DOM_VK_RIGHT : case nsIDOMKeyEvent::DOM_VK_DOWN : { if ((mDomSelections[index]->GetDirection() == eDirPrevious)) { //f,a offsetused = mDomSelections[index]->FetchAnchorOffset(); weakNodeUsed = mDomSelections[index]->FetchAnchorNode(); } else { offsetused = mDomSelections[index]->FetchFocusOffset(); weakNodeUsed = mDomSelections[index]->FetchFocusNode(); } result = mDomSelections[index]->Collapse(weakNodeUsed,offsetused); mDomSelections[index]->ScrollIntoView(); return NS_OK; } break; } // if (keyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_UP || keyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_DOWN) // SetDesiredX(desiredX); } offsetused = mDomSelections[index]->FetchFocusOffset(); weakNodeUsed = mDomSelections[index]->FetchFocusNode(); nsIFrame *frame; result = mDomSelections[index]->GetPrimaryFrameForFocusNode(&frame); if (NS_FAILED(result) || !frame) return result?result:NS_ERROR_FAILURE; nsCOMPtr content; result = frame->GetContent(getter_AddRefs(content)); nsCOMPtr node = do_QueryInterface(content); nsCOMPtr parentNode; //we also need to check to see if the result frame's content's parent is equal to the weaknode used of course. //except for special case of text frames where they are their own parent. nsCOMPtr textNode = do_QueryInterface(node); if (NS_SUCCEEDED(result) && textNode && node != weakNodeUsed)//then the offset is meaningless. { offsetused = 0;//0 because when grabbing a child content we grab the IDX'th object or: body has 2 children, //index 0 of parent is the first child so if we say the first child is the frame then say offset is 0 we are correct } else { result = node->GetParentNode(getter_AddRefs(parentNode)); if ((NS_FAILED(result) || parentNode != weakNodeUsed) && node != weakNodeUsed) //we are not pointing to same node! offset is meaningless offsetused = -1; } nsPeekOffsetStruct pos; pos.SetData(mTracker, desiredX, aAmount, eDirPrevious, offsetused, PR_FALSE,PR_TRUE, PR_TRUE); switch (aKeycode){ case nsIDOMKeyEvent::DOM_VK_RIGHT : InvalidateDesiredX(); pos.mDirection = eDirNext; mHint = HINTLEFT;//stick to this line break; case nsIDOMKeyEvent::DOM_VK_LEFT : //no break InvalidateDesiredX(); mHint = HINTRIGHT;//stick to opposite of movement break; case nsIDOMKeyEvent::DOM_VK_DOWN : pos.mAmount = eSelectLine; pos.mDirection = eDirNext;//no break here break; case nsIDOMKeyEvent::DOM_VK_UP : pos.mAmount = eSelectLine; break; case nsIDOMKeyEvent::DOM_VK_HOME : InvalidateDesiredX(); pos.mAmount = eSelectBeginLine; InvalidateDesiredX(); mHint = HINTRIGHT;//stick to opposite of movement break; case nsIDOMKeyEvent::DOM_VK_END : InvalidateDesiredX(); pos.mAmount = eSelectEndLine; InvalidateDesiredX(); mHint = HINTLEFT;//stick to this line break; default :return NS_ERROR_FAILURE; } pos.mPreferLeft = mHint; if (NS_SUCCEEDED(result) && NS_SUCCEEDED(result = frame->PeekOffset(context, &pos)) && pos.mResultContent) { mHint = (HINT)pos.mPreferLeft; result = TakeFocus(pos.mResultContent, pos.mContentOffset, pos.mContentOffset, aContinue, PR_FALSE); } else if (NS_FAILED(result)) { if (nsIDOMKeyEvent::DOM_VK_UP == aKeycode) { pos.mPreferLeft = HINTRIGHT; pos.mAmount = eSelectBeginLine; InvalidateDesiredX(); } else if(nsIDOMKeyEvent::DOM_VK_DOWN == aKeycode) { pos.mPreferLeft = HINTLEFT; pos.mAmount = eSelectEndLine; InvalidateDesiredX(); } if (nsIDOMKeyEvent::DOM_VK_UP == aKeycode || nsIDOMKeyEvent::DOM_VK_DOWN == aKeycode ) { if (NS_SUCCEEDED(result = frame->PeekOffset(context, &pos)) && pos.mResultContent) { mHint = (HINT)pos.mPreferLeft; result = TakeFocus(pos.mResultContent, pos.mContentOffset, pos.mContentOffset, aContinue, PR_FALSE); } } } if (NS_SUCCEEDED(result)) result = mDomSelections[index]->ScrollIntoView(); return result; } /** This raises a question, if this method is called and the aFrame does not reflect the current * focus DomNode, it is invalid? The answer now is yes. */ NS_IMETHODIMP nsSelection::HandleKeyEvent(nsIPresContext* aPresContext, nsGUIEvent *aGuiEvent) { if (!aGuiEvent) return NS_ERROR_NULL_POINTER; STATUS_CHECK_RETURN_MACRO(); nsresult result = NS_ERROR_FAILURE; if (NS_KEY_PRESS == aGuiEvent->message) { nsKeyEvent *keyEvent = (nsKeyEvent *)aGuiEvent; //this is ok. It really is a keyevent switch (keyEvent->keyCode) { case nsIDOMKeyEvent::DOM_VK_LEFT : case nsIDOMKeyEvent::DOM_VK_UP : case nsIDOMKeyEvent::DOM_VK_DOWN : case nsIDOMKeyEvent::DOM_VK_RIGHT : case nsIDOMKeyEvent::DOM_VK_HOME : case nsIDOMKeyEvent::DOM_VK_END : break; default: return NS_ERROR_FAILURE; } //XXX Need xp way get platfrom specific behavior into key navigation. //XXX This really shouldn't have to use an ifdef #ifdef _WIN32 if (keyEvent->isAlt) { return NS_ERROR_FAILURE; } #endif nsSelectionAmount amount = eSelectCharacter; if (keyEvent->isControl) amount = eSelectWord; return MoveCaret(keyEvent->keyCode, keyEvent->isShift, amount); } return result; } //END nsSelection methods //BEGIN nsIFrameSelection methods NS_IMETHODIMP nsDOMSelection::ToString(nsString& aReturn) { nsresult rv = NS_OK; nsCOMPtr encoder; rv = nsComponentManager::CreateInstance(NS_DOC_ENCODER_PROGID_BASE "text/plain", nsnull, NS_GET_IID(nsIDocumentEncoder), getter_AddRefs(encoder)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr shell; rv = GetPresShell(getter_AddRefs(shell)); if (NS_FAILED(rv) || !shell) { return NS_ERROR_FAILURE; } nsCOMPtr doc; rv = shell->GetDocument(getter_AddRefs(doc)); NS_ENSURE_SUCCESS(rv, rv); rv = encoder->Init(doc, NS_ConvertASCIItoUCS2("text/plain"), nsIDocumentEncoder::OutputFormatted || nsIDocumentEncoder::OutputSelectionOnly); NS_ENSURE_SUCCESS(rv, rv); encoder->SetSelection(this); rv = encoder->EncodeToString(aReturn); return rv; } NS_IMETHODIMP nsDOMSelection::SetHint(PRBool aHintRight) { return mFrameSelection->SetHint(aHintRight); } NS_IMETHODIMP nsDOMSelection::GetHint(PRBool *aHintRight) { return mFrameSelection->GetHint(aHintRight); } NS_IMETHODIMP nsSelection::HandleClick(nsIContent *aNewFocus, PRUint32 aContentOffset, PRUint32 aContentEndOffset, PRBool aContinueSelection, PRBool aMultipleSelection, PRBool aHint) { if (!aNewFocus) return NS_ERROR_INVALID_ARG; InvalidateDesiredX(); mHint = HINT(aHint); // Don't take focus when dragging off of a table if (!mSelectingTableCells) { mSelectingTableCellMode = PR_FALSE; return TakeFocus(aNewFocus, aContentOffset, aContentEndOffset, aContinueSelection, aMultipleSelection); } return NS_OK; } NS_IMETHODIMP nsSelection::HandleDrag(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint) { if (!aPresContext || !aFrame) return NS_ERROR_NULL_POINTER; nsresult result; nsIFrame *newFrame = 0; nsPoint newPoint; result = ConstrainFrameAndPointToAnchorSubtree(aPresContext, aFrame, aPoint, &newFrame, newPoint); if (NS_FAILED(result)) return result; if (!newFrame) return NS_ERROR_FAILURE; nsCOMPtr presShell; result = aPresContext->GetShell(getter_AddRefs(presShell)); if (NS_FAILED(result)) return result; PRInt32 startPos = 0; PRInt32 contentOffsetEnd = 0; PRBool beginOfContent; nsCOMPtr newContent; result = newFrame->GetContentAndOffsetsFromPoint(aPresContext, newPoint, getter_AddRefs(newContent), startPos, contentOffsetEnd,beginOfContent); if (NS_SUCCEEDED(result)) { result = HandleClick(newContent, startPos, contentOffsetEnd , PR_TRUE, PR_FALSE, beginOfContent); } return result; } NS_IMETHODIMP nsSelection::StartAutoScrollTimer(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint, PRUint32 aDelay) { PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); return mDomSelections[index]->StartAutoScrollTimer(aPresContext, aFrame, aPoint, aDelay); } NS_IMETHODIMP nsSelection::StopAutoScrollTimer() { PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); return mDomSelections[index]->StopAutoScrollTimer(); } /** hard to go from nodes to frames, easy the other way! */ NS_IMETHODIMP nsSelection::TakeFocus(nsIContent *aNewFocus, PRUint32 aContentOffset, PRUint32 aContentEndOffset, PRBool aContinueSelection, PRBool aMultipleSelection) { if (!aNewFocus) return NS_ERROR_NULL_POINTER; if (GetBatching()) return NS_ERROR_FAILURE; STATUS_CHECK_RETURN_MACRO(); if (mLimiter ) { nsCOMPtr parent; nsresult rv = aNewFocus->GetParent(*getter_AddRefs(parent)); if (NS_FAILED(rv)) return rv; if (mLimiter != parent.get()) return NS_ERROR_FAILURE; //not in the right content. mLimiter said so } //HACKHACKHACK nsCOMPtr content; nsCOMPtr domNode; nsCOMPtr parent; nsCOMPtr parent2; if (NS_FAILED(aNewFocus->GetParent(*getter_AddRefs(parent))) || !parent) return NS_ERROR_FAILURE; //END HACKHACKHACK /checking for root frames/content PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); domNode = do_QueryInterface(aNewFocus); //traverse through document and unselect crap here if (!aContinueSelection){ //single click? setting cursor down PRUint32 batching = mBatching;//hack to use the collapse code. PRBool changes = mChangesDuringBatching; mBatching = 1; if (aMultipleSelection){ nsCOMPtr newRange; NS_NewRange(getter_AddRefs(newRange)); newRange->SetStart(domNode,aContentOffset); newRange->SetEnd(domNode,aContentOffset); mDomSelections[index]->AddRange(newRange); mBatching = batching; mChangesDuringBatching = changes; mDomSelections[index]->SetOriginalAnchorPoint(domNode,aContentOffset); } else { mDomSelections[index]->Collapse(domNode, aContentOffset); mBatching = batching; mChangesDuringBatching = changes; } if (aContentEndOffset > aContentOffset) mDomSelections[index]->Extend(domNode,aContentEndOffset); } else { // Now update the range list: if (aContinueSelection && domNode) { if (mDomSelections[index]->GetDirection() == eDirNext && aContentEndOffset > aContentOffset) //didnt go far enough { mDomSelections[index]->Extend(domNode, aContentEndOffset);//this will only redraw the diff } else mDomSelections[index]->Extend(domNode, aContentOffset); } } return NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL); } NS_METHOD nsSelection::LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength, SelectionDetails **aReturnDetails, PRBool aSlowCheck) { if (!aContent || !aReturnDetails) return NS_ERROR_NULL_POINTER; STATUS_CHECK_RETURN_MACRO(); *aReturnDetails = nsnull; PRInt8 j; for (j = (PRInt8) 0; j < (PRInt8)nsISelectionController::NUM_SELECTIONTYPES; j++){ if (mDomSelections[j]) mDomSelections[j]->LookUpSelection(aContent, aContentOffset, aContentLength, aReturnDetails, (SelectionType)(1<AddRef(); return NS_OK; } NS_IMETHODIMP nsSelection::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion) { PRInt8 index = GetIndexFromSelectionType(aType); if (index < 0) return NS_ERROR_INVALID_ARG; if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER; return mDomSelections[index]->ScrollIntoView(aRegion); } NS_IMETHODIMP nsSelection::RepaintSelection(nsIPresContext* aPresContext, SelectionType aType) { PRInt8 index = GetIndexFromSelectionType(aType); if (index < 0) return NS_ERROR_INVALID_ARG; if (!mDomSelections[index]) return NS_ERROR_NULL_POINTER; return mDomSelections[index]->Repaint(aPresContext); } NS_IMETHODIMP nsSelection::GetFrameForNodeOffset(nsIContent *aNode, PRInt32 aOffset, nsIFrame **aReturnFrame, PRInt32 *aReturnOffset) { if (!aNode || !aReturnFrame || !aReturnOffset) return NS_ERROR_NULL_POINTER; if (aOffset < 0) return NS_ERROR_FAILURE; *aReturnOffset = aOffset; nsresult result; PRBool canContainChildren = PR_FALSE; result = aNode->CanContainChildren(canContainChildren); if (NS_FAILED(result)) return result; nsCOMPtr theNode = aNode; if (canContainChildren) { PRInt32 childIndex = 0; PRInt32 numChildren = 0; if (mHint == HINTLEFT) { if (aOffset > 0) childIndex = aOffset - 1; else childIndex = aOffset; } else // HINTRIGHT { result = theNode->ChildCount(numChildren); if (NS_FAILED(result)) return result; if (aOffset >= numChildren) { if (numChildren > 0) childIndex = numChildren - 1; else childIndex = 0; } else childIndex = aOffset; } nsCOMPtr childNode; result = theNode->ChildAt(childIndex, *getter_AddRefs(childNode)); if (NS_FAILED(result)) return result; if (!childNode) return NS_ERROR_FAILURE; theNode = childNode; #ifdef DONT_DO_THIS_YET // XXX: We can't use this code yet because the hinting // can cause us to attatch to the wrong line frame. // Now that we have the child node, check if it too // can contain children. If so, call this method again! result = theNode->CanContainChildren(canContainChildren); if (NS_FAILED(result)) return result; if (canContainChildren) { PRInt32 newOffset = 0; if (aOffset > childIndex) { result = theNode->ChildCount(numChildren); if (NS_FAILED(result)) return result; newOffset = numChildren; } return GetFrameForNodeOffset(theNode, newOffset, aReturnFrame,aReturnOffset); } else #endif // DONT_DO_THIS_YET { // Check to see if theNode is a text node. If it is, translate // aOffset into an offset into the text node. nsCOMPtr textNode = do_QueryInterface(theNode); if (textNode) { if (aOffset > childIndex) { PRUint32 textLength = 0; result = textNode->GetLength(&textLength); if (NS_FAILED(result)) return NS_ERROR_FAILURE; *aReturnOffset = (PRInt32)textLength; } else *aReturnOffset = 0; } } } result = mTracker->GetPrimaryFrameFor(theNode, aReturnFrame); if (NS_FAILED(result)) return result; if (!*aReturnFrame) return NS_ERROR_UNEXPECTED; // find the child frame containing the offset we want result = (*aReturnFrame)->GetChildFrameContainingOffset(*aReturnOffset, mHint, &aOffset, aReturnFrame); return result; } NS_IMETHODIMP nsSelection::CharacterMove(PRBool aForward, PRBool aExtend) { if (aForward) return MoveCaret(nsIDOMKeyEvent::DOM_VK_RIGHT,aExtend,eSelectCharacter); else return MoveCaret(nsIDOMKeyEvent::DOM_VK_LEFT,aExtend,eSelectCharacter); } NS_IMETHODIMP nsSelection::WordMove(PRBool aForward, PRBool aExtend) { if (aForward) return MoveCaret(nsIDOMKeyEvent::DOM_VK_RIGHT,aExtend,eSelectWord); else return MoveCaret(nsIDOMKeyEvent::DOM_VK_LEFT,aExtend,eSelectWord); } NS_IMETHODIMP nsSelection::LineMove(PRBool aForward, PRBool aExtend) { if (aForward) return MoveCaret(nsIDOMKeyEvent::DOM_VK_DOWN,aExtend,eSelectLine); else return MoveCaret(nsIDOMKeyEvent::DOM_VK_UP,aExtend,eSelectLine); } NS_IMETHODIMP nsSelection::IntraLineMove(PRBool aForward, PRBool aExtend) { if (aForward) return MoveCaret(nsIDOMKeyEvent::DOM_VK_END,aExtend,eSelectLine); else return MoveCaret(nsIDOMKeyEvent::DOM_VK_HOME,aExtend,eSelectLine); } NS_IMETHODIMP nsSelection::SelectAll() { return NS_ERROR_NOT_IMPLEMENTED; } //////////END FRAMESELECTION NS_IMETHODIMP nsSelection::StartBatchChanges() { nsresult result(NS_OK); mBatching++; return result; } NS_IMETHODIMP nsSelection::EndBatchChanges() { nsresult result(NS_OK); mBatching--; NS_ASSERTION(mBatching >=0,"Bad mBatching"); if (mBatching == 0 && mChangesDuringBatching){ mChangesDuringBatching = PR_FALSE; NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL); } return result; } nsresult nsSelection::NotifySelectionListeners(SelectionType aType) { PRInt8 index = GetIndexFromSelectionType(aType); if (index >=0) { return mDomSelections[index]->NotifySelectionListeners(); } return NS_ERROR_FAILURE; } // Start of Table Selection methods static PRBool IsCell(nsIContent *aContent) { nsIAtom *tag; aContent->GetTag(tag); return (tag != 0 && tag == nsSelection::sCellAtom); } nsresult nsSelection::HandleTableSelection(nsIContent *aParentContent, PRInt32 aContentOffset, PRUint32 aTarget, nsMouseEvent *aMouseEvent) { if (!aParentContent) return NS_ERROR_NULL_POINTER; if (mSelectingTableCells && (aTarget & TABLESELECTION_TABLE)) { // We were selecting cells and user drags mouse in table border or inbetween cells, // just do nothing return NS_OK; } nsCOMPtr parentNode = do_QueryInterface(aParentContent); if (!parentNode) return NS_ERROR_FAILURE; nsCOMPtr selectedContent; nsresult result = aParentContent->ChildAt(aContentOffset, *getter_AddRefs(selectedContent)); if (NS_FAILED(result)) return result; if (!selectedContent) return NS_ERROR_FAILURE; nsCOMPtr selectedNode = do_QueryInterface(selectedContent); if (!selectedNode) return NS_ERROR_FAILURE; // Stack-class to wrap all table selection changes in // BeginBatchChanges() / EndBatchChanges() PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); nsSelectionBatcher selectionBatcher(mDomSelections[index]); // 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 mDomSelections[index]->SetDirection(eDirNext); if (mSelectingTableCells) { #ifdef DEBUG_TABLE printf("HandleTableSelection: dragging mouse\n"); #endif if (aTarget == TABLESELECTION_CELL) { // If dragging in the same cell as last event, do nothing if (mEndSelectedCell == selectedContent) return NS_OK; #ifdef DEBUG_TABLE printf("HandleTableSelection: Dragged into a new cell\n"); #endif // Reselect block of cells to new end location return SelectBlockOfCells(selectedContent); } } else { // Not dragging -- mouse event is a click #ifdef DEBUG_TABLE printf("HandleTableSelection: CLICK event\n"); #endif if (aTarget == TABLESELECTION_TABLE) { //TODO: Currently selects when clicked between cells, // should we restrict to only around border? // *** How do we get location data for cell and click? mSelectingTableCells = PR_FALSE; mStartSelectedCell = nsnull; mEndSelectedCell = nsnull; #ifdef DEBUG_cmanske #ifdef DEBUG_TABLE printf("HandleTableSelection: Selecting Table\n"); { nsIFrame *frame = nsnull; result = GetTracker()->GetPrimaryFrameFor(selectedContent, &frame); if (frame) { nsRect rect1; frame->GetRect(rect1); printf("Table frame orgin: x=%d, y=%d\n", rect1.x, rect1.y); nsRect rect2 = rect1; mDomSelections[index]->GetFrameToRootViewOffset(frame, &rect2.x, &rect2.y); printf("Translated frame orgin: x=%d, y=%d\n", rect2.x, rect2.y); printf("Mouse was clicked at: x=%d, y=%d\n", aMouseEvent->point.x, aMouseEvent->point.y); } } #endif #endif // Select the table mDomSelections[index]->ClearSelection(); return CreateAndAddRange(parentNode, aContentOffset); } // We are already selecting cells // Check if cell clicked on is already selected PRInt32 rangeCount; result = mDomSelections[index]->GetRangeCount(&rangeCount); if (NS_FAILED(result)) return result; if (rangeCount > 0 && aMouseEvent->isShift && selectedContent != mStartSelectedCell) { // If Shift is down as well, do a block selection return SelectBlockOfCells(selectedContent); } nsCOMPtr previousCellParent; nsCOMPtr range; PRInt32 offset; for( PRInt32 i = 0; i < rangeCount; i++) { result = mDomSelections[index]->GetRangeAt(i, getter_AddRefs(range)); if (NS_FAILED(result)) return result; if (!range) return NS_ERROR_NULL_POINTER; nsCOMPtr parent; result = range->GetStartParent(getter_AddRefs(parent)); if (NS_FAILED(result)) return result; if (!parent) return NS_ERROR_NULL_POINTER; range->GetStartOffset(&offset); // Be sure previous selection is a table cell nsCOMPtr parentContent = do_QueryInterface(parent); nsCOMPtr childContent; result = parentContent->ChildAt(offset, *getter_AddRefs(childContent)); if (NS_FAILED(result)) return result; if (childContent && IsCell(childContent)) { previousCellParent = parent; } // We're done if we didn't find parent of a previously-selected cell if (!previousCellParent) break; if (previousCellParent == parentNode && offset == aContentOffset) { // Cell is already selected if (rangeCount == 1) { #ifdef DEBUG_TABLE printf("HandleTableSelection: Unselecting single selected cell\n"); #endif // This was the only cell selected. // Collapse to "normal" selection inside the cell mSelectingTableCells = PR_FALSE; mStartSelectedCell = nsnull; mEndSelectedCell = nsnull; //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(selectedNode, 0); } #ifdef DEBUG_TABLE printf("HandleTableSelection: Removing cell from multi-cell selection\n"); #endif //TODO: Should we try to reassign to a different existing cell? //mStartSelectedCell = nsnull; //mEndSelectedCell = nsnull; // Other cells are selected: // Deselect cell by removing its range from selection return mDomSelections[index]->RemoveRange(range); } } if (previousCellParent) { // If new cell in a different table is selected, trigger clearing the selection nsCOMPtr previousParentContent = do_QueryInterface(previousCellParent); if (!IsInSameTable(selectedContent, previousParentContent, nsnull)) previousCellParent = nsnull; } if (!previousCellParent) // There was no cell selected in the same table - clear selection mDomSelections[index]->ClearSelection(); #ifdef DEBUG_TABLE printf("HandleTableSelection: Adding new selected cell range\n"); #endif // Append a new selection range that surrounds the cell // It would be nice to make the order of ranges // map to the order of cells in table, // but AddRange doesn't allow that result = CreateAndAddRange(parentNode, aContentOffset); if (NS_SUCCEEDED(result)) { mSelectingTableCells = PR_TRUE; mSelectingTableCellMode = PR_TRUE;//only shut off on normal mouse click. mStartSelectedCell = selectedContent; mEndSelectedCell = selectedContent; } } return result; } nsresult nsSelection::SelectBlockOfCells(nsIContent *aEndCell) { if (!aEndCell) return NS_ERROR_NULL_POINTER; mEndSelectedCell = aEndCell; nsCOMPtr cellNode; nsCOMPtr range; nsresult result = GetFirstSelectedCellAndRange(getter_AddRefs(cellNode), getter_AddRefs(range)); if (NS_FAILED(result)) return result; if (!cellNode || !range) return NS_OK; mStartSelectedCell = do_QueryInterface(cellNode); // Get starting and ending cells' location in the cellmap PRInt32 startRowIndex, startColIndex, endRowIndex, endColIndex; result = GetCellIndexes(mStartSelectedCell, startRowIndex, startColIndex); if(NS_FAILED(result)) return result; result = GetCellIndexes(aEndCell, endRowIndex, endColIndex); if(NS_FAILED(result)) return result; // Get parent table, and don't allow selection if start // and end are not in same table nsCOMPtr table; if (!IsInSameTable(mStartSelectedCell, aEndCell, getter_AddRefs(table))) return NS_OK; // Get TableLayout interface to access cell data based on cellmap location // frames are not ref counted, so don't use an nsCOMPtr nsIFrame *frame = nsnull; result = GetTracker()->GetPrimaryFrameFor(table, &frame); if (!frame) return NS_ERROR_FAILURE; nsITableLayout *tableLayoutObject = nsnull; result = frame->QueryInterface(NS_GET_IID(nsITableLayout), (void**)(&tableLayoutObject)); if (NS_FAILED(result)) return result; if (!tableLayoutObject) return NS_ERROR_FAILURE; // Remove selected cells outside of new block limits PRInt32 minRowIndex = PR_MIN(startRowIndex, endRowIndex); PRInt32 maxRowIndex = PR_MAX(startRowIndex, endRowIndex); PRInt32 minColIndex = PR_MIN(startColIndex, endColIndex); PRInt32 maxColIndex = PR_MAX(startColIndex, endColIndex); PRInt32 curRowIndex, curColIndex; // Examine all cell nodes, starting with first one found above PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); while (cellNode) { nsCOMPtr cellContent = do_QueryInterface(cellNode); result = GetCellIndexes(cellContent, curRowIndex, curColIndex); if (NS_FAILED(result)) return result; 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--; } result = GetNextSelectedCellAndRange(getter_AddRefs(cellNode), getter_AddRefs(range)); if (NS_FAILED(result)) return result; } nsCOMPtr cell; PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan; PRBool isSelected; // 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 PRInt32 row = startRowIndex; while(PR_TRUE) { PRInt32 col = startColIndex; while(PR_TRUE) { result = tableLayoutObject->GetCellDataAt(row, col, *getter_AddRefs(cell), curRowIndex, curColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan, isSelected); if (NS_FAILED(result)) return result; NS_ASSERTION(actualColSpan, "!actualColSpan is 0!"); // Skip cells that are spanned from previous locations or are already selected if (!isSelected && cell && row == curRowIndex && col == curColIndex) { cellNode = do_QueryInterface(cell); nsCOMPtr parent; result = cellNode->GetParentNode(getter_AddRefs(parent)); if (NS_FAILED(result)) return result; if (!parent) return NS_ERROR_FAILURE; // Get child offset nsCOMPtr parentContent = do_QueryInterface(parent); nsCOMPtr cellContent = do_QueryInterface(cell); PRInt32 offset; result = parentContent->IndexOf(cellContent, offset); if (NS_FAILED(result)) return result; result = CreateAndAddRange(parent, offset); if (NS_FAILED(result)) return result; } // Done when we reach end column if (col == endColIndex) break; if (startColIndex < endColIndex) col ++; else col--; }; if (row == endRowIndex) break; if (startRowIndex < endRowIndex) row++; else row--; }; return result; } nsresult nsSelection::GetFirstCellNodeInRange(nsIDOMRange *aRange, nsIDOMNode **aCellNode) { if (!aRange || !aCellNode) return NS_ERROR_NULL_POINTER; *aCellNode = nsnull; nsCOMPtr startParent; nsresult result = aRange->GetStartParent(getter_AddRefs(startParent)); if (NS_FAILED(result)) return result; if (!startParent) return NS_ERROR_FAILURE; PRInt32 offset; result = aRange->GetStartOffset(&offset); if (NS_FAILED(result)) return result; nsCOMPtr parentContent = do_QueryInterface(startParent); nsCOMPtr childContent; result = parentContent->ChildAt(offset, *getter_AddRefs(childContent)); if (NS_FAILED(result)) return result; if (!childContent) return NS_ERROR_NULL_POINTER; // Don't return node if not a cell if (!IsCell(childContent)) return NS_OK; nsCOMPtr childNode = do_QueryInterface(childContent); if (childNode) { *aCellNode = childNode; NS_ADDREF(*aCellNode); } return NS_OK; } nsresult nsSelection::GetFirstSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange) { if (!aCell || !aRange) return NS_ERROR_NULL_POINTER; *aCell = nsnull; *aRange = nsnull; nsCOMPtr firstRange; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); nsresult result = mDomSelections[index]->GetRangeAt(0, getter_AddRefs(firstRange)); if (NS_FAILED(result)) return result; if (!firstRange) return NS_ERROR_FAILURE; nsCOMPtr cellNode; result = GetFirstCellNodeInRange(firstRange, getter_AddRefs(cellNode)); if (NS_FAILED(result)) return result; if (!cellNode) return NS_OK; *aCell = cellNode; NS_ADDREF(*aCell); *aRange = firstRange; NS_ADDREF(*aRange); // Setup for next cell mSelectedCellIndex = 1; return NS_OK; } nsresult nsSelection::GetNextSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange) { if (!aCell || !aRange) return NS_ERROR_NULL_POINTER; *aCell = nsnull; *aRange = nsnull; PRInt32 rangeCount; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); nsresult result = mDomSelections[index]->GetRangeCount(&rangeCount); if (NS_FAILED(result)) return result; // Don't even try if index exceeds range count if (mSelectedCellIndex >= rangeCount) { // Should we reset index? // Maybe better to force recalling GetFirstSelectedCell() //mSelectedCellIndex = 0; return NS_OK; } // Get first node in next range of selection - test if it's a cell nsCOMPtr range; result = mDomSelections[index]->GetRangeAt(mSelectedCellIndex, getter_AddRefs(range)); if (NS_FAILED(result)) return result; if (!range) return NS_ERROR_FAILURE; nsCOMPtr cellNode; result = GetFirstCellNodeInRange(range, getter_AddRefs(cellNode)); if (NS_FAILED(result)) return result; // No cell in selection range if (!cellNode) return NS_OK; *aCell = cellNode; NS_ADDREF(*aCell); *aRange = range; NS_ADDREF(*aRange); // Setup for next cell mSelectedCellIndex++; return NS_OK; } nsresult nsSelection::GetCellIndexes(nsIContent *aCell, PRInt32 &aRowIndex, PRInt32 &aColIndex) { if (!aCell) return NS_ERROR_NULL_POINTER; aColIndex=0; // initialize out params aRowIndex=0; nsIFrame *frame = nsnull; // frames are not ref counted, so don't use an nsCOMPtr nsresult result = GetTracker()->GetPrimaryFrameFor(aCell, &frame); if (!frame) return NS_ERROR_FAILURE; nsITableCellLayout *cellLayoutObject=nsnull; // again, frames are not ref-counted result = frame->QueryInterface(NS_GET_IID(nsITableCellLayout), (void**)(&cellLayoutObject)); if (NS_FAILED(result)) return result; if (!cellLayoutObject) return NS_ERROR_FAILURE; return cellLayoutObject->GetCellIndexes(aRowIndex, aColIndex); } PRBool nsSelection::IsInSameTable(nsIContent *aContent1, nsIContent *aContent2, nsIContent **aTable) { if (!aContent1 || !aContent2) return PR_FALSE; // aTable is optional: if(aTable) *aTable = nsnull; nsCOMPtr tableNode1; nsCOMPtr tableNode2; nsresult result = GetParentTable(aContent1, getter_AddRefs(tableNode1)); if (NS_FAILED(result)) return PR_FALSE; result = GetParentTable(aContent2, getter_AddRefs(tableNode2)); if (NS_FAILED(result)) return PR_FALSE; // Must be in the same table if (tableNode1 && (tableNode1 == tableNode2)) { if (aTable) { *aTable = tableNode1; NS_ADDREF(*aTable); } return PR_TRUE;; } return PR_FALSE; } nsresult nsSelection::GetParentTable(nsIContent *aCell, nsIContent **aTable) { if (!aCell || !aTable) return NS_ERROR_NULL_POINTER; nsCOMPtr parent; nsresult result = aCell->GetParent(*getter_AddRefs(parent)); while (NS_SUCCEEDED(result) && parent) { nsIAtom *tag; parent->GetTag(tag); if (tag && tag == nsSelection::sTableAtom) { *aTable = parent; NS_ADDREF(*aTable); return NS_OK; } nsCOMPtr temp; result = parent->GetParent(*getter_AddRefs(temp)); parent = temp; } return result; } nsresult nsSelection::CreateAndAddRange(nsIDOMNode *aParentNode, PRInt32 aOffset) { if (!aParentNode) return NS_ERROR_NULL_POINTER; nsCOMPtr range; NS_NewRange(getter_AddRefs(range)); if (!range) return NS_ERROR_OUT_OF_MEMORY; // 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; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); return mDomSelections[index]->AddRange(range); } // End of Table Selection NS_IMETHODIMP nsSelection::SetHint(PRBool aHintRight) { if (aHintRight) mHint = HINTRIGHT; else mHint = HINTLEFT; return NS_OK; } NS_IMETHODIMP nsSelection::GetHint(PRBool *aHintRight) { if (!aHintRight) return NS_ERROR_NULL_POINTER; if (HINTRIGHT == mHint) *aHintRight = PR_TRUE; else *aHintRight = PR_FALSE; return NS_OK; } //END nsIFrameSelection methods #ifdef XP_MAC #pragma mark - #endif //BEGIN nsIDOMSelection interface implementations /** DeleteFromDocument * will return NS_OK if it handles the event or NS_COMFALSE if not. */ NS_IMETHODIMP nsSelection::DeleteFromDocument() { nsresult res; // If we're already collapsed, then set ourselves to include the // last item BEFORE the current range, rather than the range itself, // before we do the delete. PRBool isCollapsed; PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL); mDomSelections[index]->GetIsCollapsed( &isCollapsed); if (isCollapsed) { // If the offset is positive, then it's easy: if (mDomSelections[index]->FetchFocusOffset() > 0) { mDomSelections[index]->Extend(mDomSelections[index]->FetchFocusNode(), mDomSelections[index]->FetchFocusOffset() - 1); } else { // Otherwise it's harder, have to find the previous node printf("Sorry, don't know how to delete across frame boundaries yet\n"); return NS_ERROR_NOT_IMPLEMENTED; } } // Get an iterator nsSelectionIterator iter(mDomSelections[index]); res = iter.First(); if (!NS_SUCCEEDED(res)) return res; nsCOMPtr range; while (iter.IsDone()) { res = iter.CurrentItem(NS_STATIC_CAST(nsIDOMRange**, getter_AddRefs(range))); if (!NS_SUCCEEDED(res)) return res; res = range->DeleteContents(); if (!NS_SUCCEEDED(res)) return res; iter.Next(); } // 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]->FetchAnchorNode(), mDomSelections[index]->FetchAnchorOffset()-1); else if (mDomSelections[index]->FetchAnchorOffset() > 0) mDomSelections[index]->Collapse(mDomSelections[index]->FetchAnchorNode(), mDomSelections[index]->FetchAnchorOffset()); #ifdef DEBUG else printf("Don't know how to set selection back past frame boundary\n"); #endif return NS_OK; } NS_IMETHODIMP nsSelection::SetDisplaySelection(PRInt16 aToggle) { mDisplaySelection = aToggle; return NS_OK; } NS_IMETHODIMP nsSelection::GetDisplaySelection(PRInt16 *aToggle) { if (!aToggle) return NS_ERROR_INVALID_ARG; *aToggle = mDisplaySelection; return NS_OK; } //END nsIDOMSelection interface implementations #ifdef XP_MAC #pragma mark - #endif // nsDOMSelection implementation // note: this can return a nil anchor node nsDOMSelection::nsDOMSelection(nsSelection *aList) { mFrameSelection = aList; mFixupState = PR_FALSE; mDirection = eDirNext; NS_NewISupportsArray(getter_AddRefs(mRangeArray)); mScriptObject = nsnull; mAutoScrollTimer = nsnull; NS_NewISupportsArray(getter_AddRefs(mSelectionListeners)); NS_INIT_REFCNT(); } nsDOMSelection::nsDOMSelection() { mFixupState = PR_FALSE; mDirection = eDirNext; NS_NewISupportsArray(getter_AddRefs(mRangeArray)); mScriptObject = nsnull; mAutoScrollTimer = nsnull; NS_NewISupportsArray(getter_AddRefs(mSelectionListeners)); NS_INIT_REFCNT(); } nsDOMSelection::~nsDOMSelection() { PRUint32 cnt = 0; if (mSelectionListeners) { PRUint32 cnt; nsresult rv = mSelectionListeners->Count(&cnt); NS_ASSERTION(NS_SUCCEEDED(rv), "Count failed"); for (PRUint32 i=0;i < cnt; i++) { mSelectionListeners->RemoveElementAt(i); } } nsresult rv = mRangeArray->Count(&cnt); NS_ASSERTION(NS_SUCCEEDED(rv), "Count failed"); PRUint32 j; for (j=0; jRemoveElementAt(0); } setAnchorFocusRange(-1); NS_IF_RELEASE(mAutoScrollTimer); } NS_IMPL_ADDREF(nsDOMSelection) NS_IMPL_RELEASE(nsDOMSelection) NS_IMPL_QUERY_INTERFACE3(nsDOMSelection, nsIDOMSelection, nsIScriptObjectOwner, nsISupportsWeakReference) NS_METHOD nsDOMSelection::GetAnchorNode(nsIDOMNode** aAnchorNode) { if (!aAnchorNode || !mAnchorFocusRange) return NS_ERROR_NULL_POINTER; nsresult result; if (GetDirection() == eDirNext){ result = mAnchorFocusRange->GetStartParent(aAnchorNode); } else{ result = mAnchorFocusRange->GetEndParent(aAnchorNode); } return result; } NS_METHOD nsDOMSelection::GetAnchorOffset(PRInt32* aAnchorOffset) { if (!aAnchorOffset || !mAnchorFocusRange) return NS_ERROR_NULL_POINTER; nsresult result; if (GetDirection() == eDirNext){ result = mAnchorFocusRange->GetStartOffset(aAnchorOffset); } else{ result = mAnchorFocusRange->GetEndOffset(aAnchorOffset); } return result; } // note: this can return a nil focus node NS_METHOD nsDOMSelection::GetFocusNode(nsIDOMNode** aFocusNode) { if (!aFocusNode || !mAnchorFocusRange) return NS_ERROR_NULL_POINTER; nsresult result; if (GetDirection() == eDirNext){ result = mAnchorFocusRange->GetEndParent(aFocusNode); } else{ result = mAnchorFocusRange->GetStartParent(aFocusNode); } return result; } NS_METHOD nsDOMSelection::GetFocusOffset(PRInt32* aFocusOffset) { if (!aFocusOffset || !mAnchorFocusRange) return NS_ERROR_NULL_POINTER; nsresult result; if (GetDirection() == eDirNext){ result = mAnchorFocusRange->GetEndOffset(aFocusOffset); } else{ result = mAnchorFocusRange->GetStartOffset(aFocusOffset); } return result; } void nsDOMSelection::setAnchorFocusRange(PRInt32 indx) { PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return; // XXX error? if (((PRUint32)indx) >= cnt ) return; if (indx < 0) //release all { mAnchorFocusRange = nsCOMPtr(); } else{ nsCOMPtr indexIsupports = dont_AddRef(mRangeArray->ElementAt(indx)); mAnchorFocusRange = do_QueryInterface(indexIsupports); } } nsIDOMNode* nsDOMSelection::FetchAnchorNode() { //where did the selection begin nsCOMPtrreturnval; GetAnchorNode(getter_AddRefs(returnval));//this queries return returnval; }//at end it will release, no addreff was called PRInt32 nsDOMSelection::FetchAnchorOffset() { PRInt32 returnval; if (NS_SUCCEEDED(GetAnchorOffset(&returnval)))//this queries return returnval; return 0; } nsIDOMNode* nsDOMSelection::FetchOriginalAnchorNode() //where did the ORIGINAL selection begin { nsCOMPtrreturnval; PRInt32 unused; GetOriginalAnchorPoint(getter_AddRefs(returnval), &unused);//this queries return returnval; } PRInt32 nsDOMSelection::FetchOriginalAnchorOffset() { nsCOMPtrunused; PRInt32 returnval; if (NS_SUCCEEDED(GetOriginalAnchorPoint(getter_AddRefs(unused), &returnval)))//this queries return returnval; return NS_OK; } nsIDOMNode* nsDOMSelection::FetchFocusNode() { //where is the carret nsCOMPtrreturnval; GetFocusNode(getter_AddRefs(returnval));//this queries return returnval; }//at end it will release, no addreff was called PRInt32 nsDOMSelection::FetchFocusOffset() { PRInt32 returnval; if (NS_SUCCEEDED(GetFocusOffset(&returnval)))//this queries return returnval; return NS_OK; } nsIDOMNode* nsDOMSelection::FetchStartParent(nsIDOMRange *aRange) //skip all the com stuff and give me the start/end { if (!aRange) return nsnull; nsCOMPtr returnval; aRange->GetStartParent(getter_AddRefs(returnval)); return returnval; } PRInt32 nsDOMSelection::FetchStartOffset(nsIDOMRange *aRange) { if (!aRange) return nsnull; PRInt32 returnval; if (NS_SUCCEEDED(aRange->GetStartOffset(&returnval))) return returnval; return 0; } nsIDOMNode* nsDOMSelection::FetchEndParent(nsIDOMRange *aRange) //skip all the com stuff and give me the start/end { if (!aRange) return nsnull; nsCOMPtr returnval; aRange->GetEndParent(getter_AddRefs(returnval)); return returnval; } PRInt32 nsDOMSelection::FetchEndOffset(nsIDOMRange *aRange) { if (!aRange) return nsnull; PRInt32 returnval; if (NS_SUCCEEDED(aRange->GetEndOffset(&returnval))) return returnval; return 0; } nsresult nsDOMSelection::AddItem(nsIDOMRange *aItem) { if (!mRangeArray) return NS_ERROR_FAILURE; if (!aItem) return NS_ERROR_NULL_POINTER; nsresult result; nsCOMPtr isupp = do_QueryInterface(aItem, &result); if (NS_SUCCEEDED(result)) { result = mRangeArray->AppendElement(isupp); } return result; } nsresult nsDOMSelection::RemoveItem(nsIDOMRange *aItem) { if (!mRangeArray) return NS_ERROR_FAILURE; if (!aItem ) return NS_ERROR_NULL_POINTER; PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; for (PRUint32 i = 0; i < cnt;i++) { nsCOMPtr indexIsupports = dont_AddRef(mRangeArray->ElementAt(i)); nsCOMPtr isupp; aItem->QueryInterface(NS_GET_IID(nsISupports),getter_AddRefs(isupp)); if (isupp.get() == indexIsupports.get()) { mRangeArray->RemoveElementAt(i); return NS_OK; } } return NS_COMFALSE; } nsresult nsDOMSelection::Clear(nsIPresContext* aPresContext) { setAnchorFocusRange(-1); if (!mRangeArray) return NS_ERROR_FAILURE; // Get an iterator while (PR_TRUE) { PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (cnt == 0) break; nsCOMPtr isupportsindex = dont_AddRef(mRangeArray->ElementAt(0)); nsCOMPtr range = do_QueryInterface(isupportsindex); mRangeArray->RemoveElementAt(0); selectFrames(aPresContext, range, 0); // Does RemoveElementAt also delete the elements? } // Reset direction so for more dependable table selection range handling SetDirection(eDirNext); return NS_OK; } //utility method to get the primary frame of node or use the offset to get frame of child node #if 0 NS_IMETHODIMP nsDOMSelection::GetPrimaryFrameForRangeEndpoint(nsIDOMNode *aNode, PRInt32 aOffset, PRBool aIsEndNode, nsIFrame **aReturnFrame) { if (!aNode || !aReturnFrame) return NS_ERROR_NULL_POINTER; if (aOffset < 0) return NS_ERROR_FAILURE; *aReturnFrame = 0; nsresult result = NS_OK; nsCOMPtr node = dont_QueryInterface(aNode); if (!node) return NS_ERROR_NULL_POINTER; nsCOMPtr content = do_QueryInterface(node, &result); if (NS_FAILED(result)) return result; if (!content) return NS_ERROR_NULL_POINTER; PRBool canContainChildren = PR_FALSE; result = content->CanContainChildren(canContainChildren); if (NS_SUCCEEDED(result) && canContainChildren) { if (aIsEndNode) aOffset--; if (aOffset >= 0) { nsCOMPtr child; result = content->ChildAt(aOffset, *getter_AddRefs(child)); if (NS_FAILED(result)) return result; if (!child) //out of bounds? return NS_ERROR_FAILURE; content = child;//releases the focusnode } } result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(content,aReturnFrame); return result; } #endif NS_IMETHODIMP nsDOMSelection::GetPrimaryFrameForAnchorNode(nsIFrame **aReturnFrame) { if (!aReturnFrame) return NS_ERROR_NULL_POINTER; PRInt32 frameOffset = 0; *aReturnFrame = 0; nsCOMPtr content = do_QueryInterface(FetchAnchorNode()); if (content && mFrameSelection) return mFrameSelection->GetFrameForNodeOffset(content, FetchAnchorOffset(),aReturnFrame, &frameOffset); return NS_ERROR_FAILURE; } NS_IMETHODIMP nsDOMSelection::GetPrimaryFrameForFocusNode(nsIFrame **aReturnFrame) { if (!aReturnFrame) return NS_ERROR_NULL_POINTER; PRInt32 frameOffset = 0; *aReturnFrame = 0; nsCOMPtr content = do_QueryInterface(FetchFocusNode()); if (content && mFrameSelection) return mFrameSelection->GetFrameForNodeOffset(content, FetchFocusOffset(),aReturnFrame, &frameOffset); return NS_ERROR_FAILURE; } //select all content children of aContent NS_IMETHODIMP nsDOMSelection::selectFrames(nsIPresContext* aPresContext, nsIContentIterator *aInnerIter, nsIContent *aContent, nsIDOMRange *aRange, nsIPresShell *aPresShell, PRBool aFlags) { if (!mFrameSelection) return NS_OK;//nothing to do nsresult result; nsCOMPtr genericiter = do_QueryInterface(aInnerIter); if (genericiter && aPresShell) { result = genericiter->Init(aPresShell,aContent); } else result = aInnerIter->Init(aContent); nsIFrame *frame; if (NS_SUCCEEDED(result)) { // First select frame of content passed in result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(aContent, &frame); if (NS_SUCCEEDED(result) && frame) //NOTE: aRange and eSpreadDown are now IGNORED. Selected state is set only for given frame frame->SetSelected(aPresContext, aRange, aFlags, eSpreadDown); // Now iterated through the child frames and set them nsCOMPtr innercontent; while (NS_ENUMERATOR_FALSE == aInnerIter->IsDone()) { result = aInnerIter->CurrentNode(getter_AddRefs(innercontent)); if (NS_FAILED(result) || !innercontent) continue; result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(innercontent, &frame); if (NS_SUCCEEDED(result) && frame) //NOTE: aRange and eSpreadDown are now IGNORED. Selected state is set only for given frame frame->SetSelected(aPresContext, aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow result = aInnerIter->Next(); if (NS_FAILED(result)) return result; } #if 0 result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(content, &frame); if (NS_SUCCEEDED(result) && frame) frame->SetSelected(aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow #endif return NS_OK; } return NS_ERROR_FAILURE; } //the idea of this helper method is to select, deselect "top to bottom" traversing through the frames NS_IMETHODIMP nsDOMSelection::selectFrames(nsIPresContext* aPresContext, nsIDOMRange *aRange, PRBool aFlags) { if (!mFrameSelection) return NS_OK;//nothing to do if (!aRange || !aPresContext) return NS_ERROR_NULL_POINTER; nsCOMPtr iter; nsCOMPtr inneriter; nsresult result = nsComponentManager::CreateInstance(kCGenSubtreeIteratorCID, nsnull, NS_GET_IID(nsIContentIterator), getter_AddRefs(iter)); if (NS_FAILED(result)) return result; result = nsComponentManager::CreateInstance(kCGenContentIteratorCID, nsnull, NS_GET_IID(nsIContentIterator), getter_AddRefs(inneriter)); if ((NS_SUCCEEDED(result)) && iter && inneriter) { nsCOMPtr presShell; result = aPresContext->GetShell(getter_AddRefs(presShell)); if (NS_FAILED(result) && presShell) presShell = 0; nsCOMPtr genericiter = do_QueryInterface(iter); if (genericiter && presShell) result = genericiter->Init(presShell,aRange); else result = iter->Init(aRange); // loop through the content iterator for each content node // for each text node: // get the frame for the content, and from it the style context // ask the style context about the property nsCOMPtr content; nsIFrame *frame; //we must call first one explicitly content = do_QueryInterface(FetchStartParent(aRange), &result); if (NS_FAILED(result) || !content) return result; PRBool canContainChildren = PR_FALSE; result = content->CanContainChildren(canContainChildren); if (NS_SUCCEEDED(result) && !canContainChildren) { result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(content, &frame); if (NS_SUCCEEDED(result) && frame) frame->SetSelected(aPresContext, aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow } //end start content result = iter->First(); while (NS_SUCCEEDED(result) && NS_ENUMERATOR_FALSE == iter->IsDone()) { result = iter->CurrentNode(getter_AddRefs(content)); if (NS_FAILED(result) || !content) return result; selectFrames(aPresContext, inneriter, content, aRange, presShell,aFlags); result = iter->Next(); } //we must now do the last one if it is not the same as the first if (FetchEndParent(aRange) != FetchStartParent(aRange)) { content = do_QueryInterface(FetchEndParent(aRange), &result); if (NS_FAILED(result) || !content) return result; canContainChildren = PR_FALSE; result = content->CanContainChildren(canContainChildren); if (NS_SUCCEEDED(result) && !canContainChildren) { result = mFrameSelection->GetTracker()->GetPrimaryFrameFor(content, &frame); if (NS_SUCCEEDED(result) && frame) frame->SetSelected(aPresContext, aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow } } //end end parent } return result; } NS_IMETHODIMP nsDOMSelection::LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength, SelectionDetails **aReturnDetails, SelectionType aType, PRBool aSlowCheck) { PRInt32 cnt; nsresult rv = GetRangeCount(&cnt); if (NS_FAILED(rv)) return rv; PRInt32 i; nsCOMPtr passedInNode; passedInNode = do_QueryInterface(aContent); if (!passedInNode) return NS_ERROR_FAILURE; SelectionDetails *details = nsnull; SelectionDetails *newDetails = details; for (i =0; i range; nsCOMPtr isupportsindex = dont_AddRef(mRangeArray->ElementAt(i)); range = do_QueryInterface(isupportsindex); if (range){ nsCOMPtr startNode; nsCOMPtr endNode; PRInt32 startOffset; PRInt32 endOffset; range->GetStartParent(getter_AddRefs(startNode)); range->GetStartOffset(&startOffset); range->GetEndParent(getter_AddRefs(endNode)); range->GetEndOffset(&endOffset); if (passedInNode == startNode && passedInNode == endNode){ if (startOffset < (aContentOffset + aContentLength) && endOffset > aContentOffset){ if (!details){ details = new SelectionDetails; newDetails = details; } else{ newDetails->mNext = new SelectionDetails; newDetails = newDetails->mNext; } if (!newDetails) return NS_ERROR_OUT_OF_MEMORY; newDetails->mNext = nsnull; newDetails->mStart = PR_MAX(0,startOffset - aContentOffset); newDetails->mEnd = PR_MIN(aContentLength, endOffset - aContentOffset); newDetails->mType = aType; } } else if (passedInNode == startNode){ if (startOffset < (aContentOffset + aContentLength)){ if (!details){ details = new SelectionDetails; newDetails = details; } else{ newDetails->mNext = new SelectionDetails; newDetails = newDetails->mNext; } if (!newDetails) return NS_ERROR_OUT_OF_MEMORY; newDetails->mNext = nsnull; newDetails->mStart = PR_MAX(0,startOffset - aContentOffset); newDetails->mEnd = aContentLength; newDetails->mType = aType; } } else if (passedInNode == endNode){ if (endOffset > aContentOffset){ if (!details){ details = new SelectionDetails; newDetails = details; } else{ newDetails->mNext = new SelectionDetails; newDetails = newDetails->mNext; } if (!newDetails) return NS_ERROR_OUT_OF_MEMORY; newDetails->mNext = nsnull; newDetails->mStart = 0; newDetails->mEnd = PR_MIN(aContentLength, endOffset - aContentOffset); newDetails->mType = aType; } } else { if (cnt > 1 || aSlowCheck){ //we only have to look at start offset because anything else would have been in the range PRInt32 resultnum = ComparePoints(startNode, startOffset ,passedInNode, aContentOffset); if (resultnum > 0) continue; resultnum = ComparePoints(endNode, endOffset, passedInNode, aContentOffset ); if (resultnum <0) continue; } if (!details){ details = new SelectionDetails; newDetails = details; } else{ newDetails->mNext = new SelectionDetails; newDetails = newDetails->mNext; } if (!newDetails) return NS_ERROR_OUT_OF_MEMORY; newDetails->mNext = nsnull; newDetails->mStart = 0; newDetails->mEnd = aContentLength; newDetails->mType = aType; } } else continue; } if (*aReturnDetails && newDetails) newDetails->mNext = *aReturnDetails; if (details) *aReturnDetails = details; return NS_OK; } NS_IMETHODIMP nsDOMSelection::Repaint(nsIPresContext* aPresContext) { PRUint32 arrCount = 0; if (!mRangeArray) return NS_ERROR_NULL_POINTER; nsCOMPtr isupp; nsCOMPtr range; nsresult result = mRangeArray->Count(&arrCount); if (NS_FAILED(result)) return result; if (arrCount < 1) return NS_OK; PRUint32 i; for (i = 0; i < arrCount; i++) { result = mRangeArray->GetElementAt(i, getter_AddRefs(isupp)); if (NS_FAILED(result)) return result; if (!isupp) return NS_ERROR_NULL_POINTER; range = do_QueryInterface(isupp); if (!range) return NS_ERROR_NULL_POINTER; result = selectFrames(aPresContext, range, PR_TRUE); if (NS_FAILED(result)) return result; } return NS_OK; } nsresult nsDOMSelection::StartAutoScrollTimer(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint, PRUint32 aDelay) { nsresult result; if (!mFrameSelection) return NS_OK;//nothing to do if (!mAutoScrollTimer) { result = NS_NewAutoScrollTimer(&mAutoScrollTimer); if (NS_FAILED(result)) return result; if (!mAutoScrollTimer) return NS_ERROR_OUT_OF_MEMORY; result = mAutoScrollTimer->Init(mFrameSelection, this); if (NS_FAILED(result)) return result; } result = mAutoScrollTimer->SetDelay(aDelay); if (NS_FAILED(result)) return result; return DoAutoScroll(aPresContext, aFrame, aPoint); } nsresult nsDOMSelection::StopAutoScrollTimer() { if (mAutoScrollTimer) return mAutoScrollTimer->Stop(); return NS_OK; } nsresult nsDOMSelection::DoAutoScroll(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint) { nsresult result; if (!aPresContext || !aFrame) return NS_ERROR_NULL_POINTER; if (mAutoScrollTimer) result = mAutoScrollTimer->Stop(); nsCOMPtr presShell; result = aPresContext->GetShell(getter_AddRefs(presShell)); // // Get a hold of the root scrollable view for presShell. // nsCOMPtr viewManager; result = presShell->GetViewManager(getter_AddRefs(viewManager)); if (NS_FAILED(result)) return result; if (!viewManager) return NS_ERROR_NULL_POINTER; nsIScrollableView *scrollableView = 0; result = viewManager->GetRootScrollableView(&scrollableView); if (NS_SUCCEEDED(result) && scrollableView) { // // Get a hold of the scrollable view's clip view. // const nsIView *cView = 0; result = scrollableView->GetClipView(&cView); if (NS_SUCCEEDED(result) && cView) { // // Find out if this frame's view is in the parent hierarchy of the clip view. // If it is, then we know the drag is happening outside of the clip view, // so we may need to auto scroll. // // Get the frame's parent view. nsPoint viewOffset(0,0); nsIView *frameView = 0; nsIFrame *parentFrame = aFrame; while (NS_SUCCEEDED(result) && parentFrame && !frameView) { result = parentFrame->GetView(aPresContext, &frameView); if (NS_SUCCEEDED(result) && !frameView) result = parentFrame->GetParent(&parentFrame); } if (NS_SUCCEEDED(result) && frameView) { // // Now make sure that the frame's view is in the // scrollable view's parent hierarchy. // nsIView *view = (nsIView*)frameView; nscoord x, y; while (view && view != cView) { result = view->GetParent(view); if (NS_FAILED(result)) view = 0; else if (view) { result = view->GetPosition(&x, &y); if (NS_FAILED(result)) view = 0; else { // // Keep track of the view offsets so we can // translate aPoint into the scrollable view's // coordinate system. // viewOffset.x += x; viewOffset.y += y; } } } if (view) { // // See if aPoint is outside the clip view's boundaries. // If it is, scroll the view till it is inside the visible area! // nsRect bounds; result = view->GetBounds(bounds); scrollableView->GetScrollPosition(bounds.x,bounds.y); if (NS_SUCCEEDED(result)) { // // Calculate the amount we would have to scroll in // the vertical and horizontal directions to get the point // within the clip area. // nscoord dx = 0, dy = 0; nsPoint ePoint = aPoint; ePoint.x -= viewOffset.x; ePoint.y -= viewOffset.y; nscoord x1 = bounds.x; nscoord x2 = bounds.x + bounds.width; nscoord y1 = bounds.y; nscoord y2 = bounds.y + bounds.height; if (ePoint.x < x1) dx = ePoint.x - x1; else if (ePoint.x > x2) dx = ePoint.x - x2; if (ePoint.y < y1) dy = ePoint.y - y1; else if (ePoint.y > y2) dy = ePoint.y - y2; // // Now clip the scroll amounts so that we don't scroll // beyond the ends of the document. // nscoord scrollX = 0, scrollY = 0; nscoord docWidth = 0, docHeight = 0; result = scrollableView->GetScrollPosition(scrollX, scrollY); if (NS_SUCCEEDED(result)) result = scrollableView->GetContainerSize(&docWidth, &docHeight); if (NS_SUCCEEDED(result)) { if (dx < 0 && scrollX == 0) dx = 0; else if (dx > 0) { x1 = scrollX + dx + bounds.width; if (x1 > docWidth) dx -= x1 - docWidth; } if (dy < 0 && scrollY == 0) dy = 0; else if (dy > 0) { y1 = scrollY + dy + bounds.height; if (y1 > docHeight) dy -= y1 - docHeight; } // // Now scroll the view if neccessary. // if (dx != 0 || dy != 0) { // make sure latest bits are available before we scroll them. viewManager->Composite(); result = scrollableView->ScrollTo(scrollX + dx, scrollY + dy, NS_VMREFRESH_NO_SYNC); if (mAutoScrollTimer) { nsPoint point(aPoint.x + dx,aPoint.y + dy); result = mAutoScrollTimer->Start(aPresContext, parentFrame, point); #ifdef DEBUG_SELECTION printf("point out of view: x=%u, y=%u\n", (point.x), (point.y)); #endif } } } } } } } } return result; } NS_IMETHODIMP nsDOMSelection::GetEnumerator(nsIEnumerator **aIterator) { nsresult status = NS_ERROR_OUT_OF_MEMORY; nsSelectionIterator *iterator = new nsSelectionIterator(this); if ( iterator && !NS_SUCCEEDED(status = CallQueryInterface(iterator, aIterator)) ) delete iterator; return status; } /** ClearSelection zeroes the selection */ NS_IMETHODIMP nsDOMSelection::ClearSelection() { if (!mFrameSelection) return NS_OK;//nothing to do nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); nsresult result = Clear(presContext); if (NS_FAILED(result)) return result; return mFrameSelection->NotifySelectionListeners(GetType()); // Also need to notify the frames! // PresShell::ContentChanged should do that on DocumentChanged } /** AddRange adds the specified range to the selection * @param aRange is the range to be added */ NS_IMETHODIMP nsDOMSelection::AddRange(nsIDOMRange* aRange) { nsresult result = AddItem(aRange); if (NS_FAILED(result)) return result; PRInt32 count; result = GetRangeCount(&count); if (NS_FAILED(result)) return result; if (count <= 0) { NS_ASSERTION(0,"bad count after additem\n"); return NS_ERROR_FAILURE; } setAnchorFocusRange(count -1); nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); selectFrames(presContext, aRange, PR_TRUE); //ScrollIntoView(); this should not happen automatically if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->NotifySelectionListeners(GetType()); } NS_IMETHODIMP nsDOMSelection::RemoveRange(nsIDOMRange* aRange) { if (!aRange) return NS_ERROR_INVALID_ARG; RemoveItem(aRange); nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); selectFrames(presContext, aRange, PR_FALSE); if (aRange == mAnchorFocusRange.get()) { PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_SUCCEEDED(rv) && cnt > 0 ) { setAnchorFocusRange(cnt -1);//reset anchor to LAST range. ScrollIntoView(); } } if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->NotifySelectionListeners(GetType()); } /* * Collapse sets the whole selection to be one point. */ NS_IMETHODIMP nsDOMSelection::Collapse(nsIDOMNode* aParentNode, PRInt32 aOffset) { if (!aParentNode) return NS_ERROR_INVALID_ARG; nsresult result; // Delete all of the current ranges if (NS_FAILED(SetOriginalAnchorPoint(aParentNode,aOffset))) return NS_ERROR_FAILURE; //??? nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); Clear(presContext); nsCOMPtr range; NS_NewRange(getter_AddRefs(range)); if (! range){ NS_ASSERTION(PR_FALSE,"Couldn't make a range - nsSelection::Collapse"); return NS_ERROR_UNEXPECTED; } result = range->SetEnd(aParentNode, aOffset); if (NS_FAILED(result)) return result; result = range->SetStart(aParentNode, aOffset); if (NS_FAILED(result)) return result; #ifdef DEBUG_SELECTION if (aParentNode) { nsCOMPtrcontent; content = do_QueryInterface(aParentNode); if (!content) return NS_ERROR_FAILURE; nsIAtom *tag; content->GetTag(tag); if (tag) { nsString tagString; tag->ToString(tagString); char * tagCString = tagString.ToNewCString(); printf ("Sel. Collapse to %p %s %d\n", content, tagCString, aOffset); delete [] tagCString; } } else { printf ("Sel. Collapse set to null parent.\n"); } #endif result = AddItem(range); setAnchorFocusRange(0); selectFrames(presContext, range,PR_TRUE); if (NS_FAILED(result)) return result; if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->NotifySelectionListeners(GetType()); } /* * Sets the whole selection to be one point * at the start of the current selection */ NS_IMETHODIMP nsDOMSelection::CollapseToStart() { PRInt32 cnt; nsresult rv = GetRangeCount(&cnt); if (NS_FAILED(rv) || cnt<=0 || !mRangeArray) return NS_ERROR_FAILURE; // Get the first range (from GetRangeAt) nsISupports* element = mRangeArray->ElementAt(0); nsCOMPtr firstRange = do_QueryInterface(element); if (!firstRange) return NS_ERROR_FAILURE; nsCOMPtr parent; rv = firstRange->GetStartParent(getter_AddRefs(parent)); if (NS_SUCCEEDED(rv)) { if (parent) { PRInt32 startOffset; firstRange->GetStartOffset(&startOffset); rv = Collapse(parent, startOffset); } else { // not very likely! rv = NS_ERROR_FAILURE; } } return rv; } /* * Sets the whole selection to be one point * at the end of the current selection */ NS_IMETHODIMP nsDOMSelection::CollapseToEnd() { PRInt32 cnt; nsresult rv = GetRangeCount(&cnt); if (NS_FAILED(rv) || cnt<=0 || !mRangeArray) return NS_ERROR_FAILURE; // Get the last range (from GetRangeAt) nsISupports* element = mRangeArray->ElementAt(cnt-1); nsCOMPtr lastRange = do_QueryInterface(element); if (!lastRange) return NS_ERROR_FAILURE; nsCOMPtr parent; rv = lastRange->GetEndParent(getter_AddRefs(parent)); if (NS_SUCCEEDED(rv)) { if (parent) { PRInt32 endOffset; lastRange->GetEndOffset(&endOffset); rv = Collapse(parent, endOffset); } else { // not very likely! rv = NS_ERROR_FAILURE; } } return rv; } /* * IsCollapsed -- is the whole selection just one point, or unset? */ NS_IMETHODIMP nsDOMSelection::GetIsCollapsed(PRBool* aIsCollapsed) { if (!aIsCollapsed) return NS_ERROR_NULL_POINTER; PRUint32 cnt = 0; if (mRangeArray) { nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; } if (!mRangeArray || (cnt == 0)) { *aIsCollapsed = PR_TRUE; return NS_OK; } if (cnt != 1) { *aIsCollapsed = PR_FALSE; return NS_OK; } nsCOMPtr nsisup(dont_AddRef(mRangeArray->ElementAt(0))); nsCOMPtr range; nsresult rv; range = do_QueryInterface(nsisup,&rv); if (NS_FAILED(rv)) { return rv; } return (range->GetIsCollapsed(aIsCollapsed)); } NS_IMETHODIMP nsDOMSelection::GetRangeCount(PRInt32* aRangeCount) { if (!aRangeCount) return NS_ERROR_NULL_POINTER; if (mRangeArray) { PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; *aRangeCount = cnt; } else { *aRangeCount = 0; } return NS_OK; } NS_IMETHODIMP nsDOMSelection::GetRangeAt(PRInt32 aIndex, nsIDOMRange** aReturn) { if (!aReturn) return NS_ERROR_NULL_POINTER; if (!mRangeArray) return NS_ERROR_INVALID_ARG; PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; if (aIndex < 0 || ((PRUint32)aIndex) >= cnt) return NS_ERROR_INVALID_ARG; // the result of all this is one additional ref on the item, as // the caller would expect. // // ElementAt addrefs once // do_QueryInterface addrefs once // when the COMPtr goes out of scope, it releases. // nsISupports* element = mRangeArray->ElementAt((PRUint32)aIndex); nsCOMPtr foundRange = do_QueryInterface(element); *aReturn = foundRange; return NS_OK; } #if OLD_SELECTION //may change parameters may not. //return NS_ERROR_FAILURE if invalid new selection between anchor and passed in parameters NS_IMETHODIMP nsDOMSelection::FixupSelectionPoints(nsIDOMRange *aRange , nsDirection *aDir, PRBool *aFixupState) { if (!aRange || !aFixupState) return NS_ERROR_NULL_POINTER; *aFixupState = PR_FALSE; nsresult res; //startNode is the beginning or "anchor" of the range //end Node is the end or "focus of the range nsCOMPtr startNode; nsCOMPtr endNode; PRInt32 startOffset; PRInt32 endOffset; nsresult result; if (*aDir == eDirNext) { if (NS_FAILED(GetOriginalAnchorPoint(getter_AddRefs(startNode), &startOffset))) { aRange->GetStartParent(getter_AddRefs(startNode)); aRange->GetStartOffset(&startOffset); } aRange->GetEndParent(getter_AddRefs(endNode)); aRange->GetEndOffset(&endOffset); } else { if (NS_FAILED(GetOriginalAnchorPoint(getter_AddRefs(startNode), &startOffset))) { aRange->GetEndParent(getter_AddRefs(startNode)); aRange->GetEndOffset(&startOffset); } aRange->GetStartParent(getter_AddRefs(endNode)); aRange->GetStartOffset(&endOffset); } if (!startNode || !endNode) return NS_ERROR_FAILURE; // if end node is a tbody then all bets are off we cannot select "rows" nsCOMPtr atom; atom = GetTag(endNode); if (atom.get() == nsSelection::sTbodyAtom) return NS_ERROR_FAILURE; //cannot select INTO row node ony cells //get common parent nsCOMPtr parent; nsCOMPtr subRange; NS_NewRange(getter_AddRefs(subRange)); if (!subRange) return NS_ERROR_OUT_OF_MEMORY result = subRange->SetStart(startNode,startOffset); if (NS_FAILED(result)) return result; result = subRange->SetEnd(endNode,endOffset); if (NS_FAILED(result)) { result = subRange->SetEnd(startNode,startOffset); if (NS_FAILED(result)) return result; result = subRange->SetStart(endNode,endOffset); if (NS_FAILED(result)) return result; } res = subRange->GetCommonParent(getter_AddRefs(parent)); if (NS_FAILED(res) || !parent) return res; //look for dest. if you see a cell you are in "cell mode" //if you see a table you select "whole" table //src first nsCOMPtr tempNode; nsCOMPtr tempNode2; PRBool cellMode = PR_FALSE; PRBool dirtystart = PR_FALSE; PRBool dirtyend = PR_FALSE; if (startNode != endNode) { if (parent != startNode) { result = startNode->GetParentNode(getter_AddRefs(tempNode)); if (NS_FAILED(result) || !tempNode) return NS_ERROR_FAILURE; while (tempNode != parent) { atom = GetTag(tempNode); if (atom.get() == nsSelection::sTableAtom) //select whole table if in cell mode, wait for cell { result = ParentOffset(tempNode, getter_AddRefs(startNode), &startOffset); if (NS_FAILED(result)) return NS_ERROR_FAILURE; if (*aDir == eDirPrevious) //select after startOffset++; dirtystart = PR_TRUE; cellMode = PR_FALSE; } else if (atom.get() == nsSelection::sCellAtom) //you are in "cell" mode put selection to end of cell { cellMode = PR_TRUE; result = ParentOffset(tempNode, getter_AddRefs(startNode), &startOffset); if (NS_FAILED(result)) return result; if (*aDir == eDirPrevious) //select after startOffset++; dirtystart = PR_TRUE; } result = tempNode->GetParentNode(getter_AddRefs(tempNode2)); if (NS_FAILED(result) || !tempNode2) return NS_ERROR_FAILURE; tempNode = tempNode2; } } //now for dest node if (parent != endNode) { result = endNode->GetParentNode(getter_AddRefs(tempNode)); PRBool found = !cellMode; if (NS_FAILED(result) || !tempNode) return NS_ERROR_FAILURE; while (tempNode != parent) { atom = GetTag(tempNode); if (atom.get() == nsSelection::sTableAtom) //select whole table if in cell mode, wait for cell { if (!cellMode) { result = ParentOffset(tempNode, getter_AddRefs(endNode), &endOffset); if (NS_FAILED(result)) return result; if (*aDir == eDirNext) //select after endOffset++; dirtyend = PR_TRUE; } else found = PR_FALSE; //didnt find the right cell yet } else if (atom.get() == nsSelection::sCellAtom) //you are in "cell" mode put selection to end of cell { result = ParentOffset(tempNode, getter_AddRefs(endNode), &endOffset); if (NS_FAILED(result)) return result; if (*aDir == eDirNext) //select after endOffset++; found = PR_TRUE; dirtyend = PR_TRUE; } result = tempNode->GetParentNode(getter_AddRefs(tempNode2)); if (NS_FAILED(result) || !tempNode2) return NS_ERROR_FAILURE; tempNode = tempNode2; } if (!found) return NS_ERROR_FAILURE; } } if (*aDir == eDirNext) { if (FetchAnchorNode() == startNode.get() && FetchFocusNode() == endNode.get() && FetchAnchorOffset() == startOffset && FetchFocusOffset() == endOffset) { *aFixupState = PR_FALSE; return NS_ERROR_FAILURE;//nothing to do } } else { if (FetchAnchorNode() == endNode.get() && FetchFocusNode() == startNode.get() && FetchAnchorOffset() == endOffset && FetchFocusOffset() == startOffset) { *aFixupState = PR_FALSE; return NS_ERROR_FAILURE;//nothing to do } } if (mFixupState && !dirtyend && !dirtystart)//no mor fixup! all bets off { dirtystart = PR_TRUE;//force a reset of anchor positions dirtystart = PR_TRUE; *aFixupState = PR_TRUE;//redraw all selection here mFixupState = PR_FALSE;//no more fixup for next time } else if ((dirtystart || dirtyend) && *aDir != mDirection) //fixup took place but new direction all bets are off { *aFixupState = PR_TRUE; //mFixupState = PR_FALSE; } else if (dirtystart && (FetchAnchorNode() != startNode.get() || FetchAnchorOffset() != startOffset)) { *aFixupState = PR_TRUE; mFixupState = PR_TRUE; } else if (dirtyend && (FetchFocusNode() != endNode.get() || FetchFocusOffset() != endOffset)) { *aFixupState = PR_TRUE; mFixupState = PR_TRUE; } else { mFixupState = dirtystart || dirtyend; *aFixupState = PR_FALSE; } if (dirtystart || dirtyend){ if (*aDir == eDirNext) { if (NS_FAILED(aRange->SetStart(startNode,startOffset)) || NS_FAILED(aRange->SetEnd(endNode, endOffset))) { *aDir = eDirPrevious; aRange->SetStart(endNode, endOffset); aRange->SetEnd(startNode, startOffset); } } else { if (NS_FAILED(aRange->SetStart(endNode,endOffset)) || NS_FAILED(aRange->SetEnd(startNode, startOffset))) { *aDir = eDirNext; aRange->SetStart(startNode, startOffset); aRange->SetEnd(endNode, endOffset); } } } return NS_OK; } #endif //OLD_SELECTION NS_IMETHODIMP nsDOMSelection::SetOriginalAnchorPoint(nsIDOMNode *aNode, PRInt32 aOffset) { if (!aNode){ mOriginalAnchorRange = 0; return NS_OK; } nsCOMPtr newRange; nsresult result; NS_NewRange(getter_AddRefs(newRange)); if (!newRange) return NS_ERROR_OUT_OF_MEMORY; result = newRange->SetStart(aNode,aOffset); if (NS_FAILED(result)) return result; result = newRange->SetEnd(aNode,aOffset); if (NS_FAILED(result)) return result; mOriginalAnchorRange = newRange; return result; } NS_IMETHODIMP nsDOMSelection::GetOriginalAnchorPoint(nsIDOMNode **aNode, PRInt32 *aOffset) { if (!aNode || !aOffset || !mOriginalAnchorRange) return NS_ERROR_NULL_POINTER; nsresult result; result = mOriginalAnchorRange->GetStartParent(aNode); if (NS_FAILED(result)) return result; result = mOriginalAnchorRange->GetStartOffset(aOffset); return result; } /* utility function */ NS_IMETHODIMP nsDOMSelection::CopyRangeToAnchorFocus(nsIDOMRange *aRange) { nsCOMPtr startNode; nsCOMPtr endNode; PRInt32 startOffset; PRInt32 endOffset; aRange->GetStartParent(getter_AddRefs(startNode)); aRange->GetEndParent(getter_AddRefs(endNode)); aRange->GetStartOffset(&startOffset); aRange->GetEndOffset(&endOffset); if (NS_FAILED(mAnchorFocusRange->SetStart(startNode,startOffset))) { if (NS_FAILED(mAnchorFocusRange->SetEnd(endNode,endOffset))) return NS_ERROR_FAILURE;//??? if (NS_FAILED(mAnchorFocusRange->SetStart(startNode,startOffset))) return NS_ERROR_FAILURE;//??? } else if (NS_FAILED(mAnchorFocusRange->SetEnd(endNode,endOffset))) return NS_ERROR_FAILURE;//??? return NS_OK; } /* 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 nsDOMSelection::Extend(nsIDOMNode* aParentNode, PRInt32 aOffset) { if (!aParentNode) return NS_ERROR_INVALID_ARG; // First, find the range containing the old focus point: if (!mRangeArray || !mAnchorFocusRange) return NS_ERROR_NOT_INITIALIZED; //mFrameSelection->InvalidateDesiredX(); nsCOMPtr difRange; nsresult res; NS_NewRange(getter_AddRefs(difRange)); nsCOMPtr range; if (FetchFocusNode() == aParentNode && FetchFocusOffset() == aOffset) return NS_ERROR_FAILURE;//same node nothing to do! res = mAnchorFocusRange->Clone(getter_AddRefs(range)); //range = mAnchorFocusRange; nsCOMPtr startNode; nsCOMPtr endNode; PRInt32 startOffset; PRInt32 endOffset; range->GetStartParent(getter_AddRefs(startNode)); range->GetEndParent(getter_AddRefs(endNode)); range->GetStartOffset(&startOffset); range->GetEndOffset(&endOffset); nsDirection dir = GetDirection(); PRBool fixupState = PR_FALSE; //if there was a previous fixup the optimal drawing erasing will NOT work if (NS_FAILED(res)) return res; NS_NewRange(getter_AddRefs(difRange)); //compare anchor to old cursor. if (NS_FAILED(res)) return res; PRInt32 result1 = ComparePoints(FetchAnchorNode(), FetchAnchorOffset() ,FetchFocusNode(), FetchFocusOffset()); //compare old cursor to new cursor PRInt32 result2 = ComparePoints(FetchFocusNode(), FetchFocusOffset(), aParentNode, aOffset ); //compare anchor to new cursor PRInt32 result3 = ComparePoints(FetchAnchorNode(), FetchAnchorOffset(), aParentNode , aOffset ); if (result2 == 0) //not selecting anywhere return NS_OK; nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); if ((result1 == 0 && result3 < 0) || (result1 <= 0 && result2 < 0)){//a1,2 a,1,2 //select from 1 to 2 unless they are collapsed res = range->SetEnd(aParentNode,aOffset); if (NS_FAILED(res)) return res; dir = eDirNext; res = difRange->SetEnd(FetchEndParent(range), FetchEndOffset(range)); res |= difRange->SetStart(FetchFocusNode(), FetchFocusOffset()); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); #endif if (NS_FAILED(res)) return res; if (fixupState) { #if OLD_SELECTION selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); #endif } else{ selectFrames(presContext, difRange , PR_TRUE); } res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; } else if (result1 == 0 && result3 > 0){//2, a1 //select from 2 to 1a dir = eDirPrevious; res = range->SetStart(aParentNode,aOffset); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); } else #endif selectFrames(presContext, range, PR_TRUE); res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; } 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(FetchFocusNode(), FetchFocusOffset()); res |= difRange->SetStart(aParentNode, aOffset); if (NS_FAILED(res)) return res; res = range->SetEnd(aParentNode,aOffset); if (NS_FAILED(res)) return res; #if OLD_SELECTION dir = eDirNext; res = FixupSelectionPoints(range, &dir, &fixupState); #endif if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { #if OLD_SELECTION selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); #endif } else { res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; selectFrames(presContext, difRange, 0);//deselect now if fixup succeeded difRange->SetEnd(FetchEndParent(range),FetchEndOffset(range)); selectFrames(presContext, difRange, PR_TRUE);//must reselect last node maybe more if fixup did something } } 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)) return res; } dir = eDirNext; res = range->SetEnd(aParentNode,aOffset); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); } else #endif { if (FetchFocusNode() != FetchAnchorNode() || FetchFocusOffset() != FetchAnchorOffset() ){//if collapsed diff dont do anything res = difRange->SetStart(FetchFocusNode(), FetchFocusOffset()); res |= difRange->SetEnd(FetchAnchorNode(), FetchAnchorOffset()); if (NS_FAILED(res)) return res; res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; //deselect from 1 to a selectFrames(presContext, difRange , PR_FALSE); } else { res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; } //select from a to 2 selectFrames(presContext, range , PR_TRUE); } } else if (result2 <= 0 && result3 >= 0) {//1,2,a or 12,a or 1,2a or 12a //deselect from 1 to 2 res = difRange->SetEnd(aParentNode, aOffset); res |= difRange->SetStart(FetchFocusNode(), FetchFocusOffset()); if (NS_FAILED(res)) return res; dir = eDirPrevious; res = range->SetStart(aParentNode,aOffset); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); #endif if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { #if OLD_SELECTION selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); #endif } else { res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; selectFrames(presContext, difRange , PR_FALSE); difRange->SetStart(FetchStartParent(range),FetchStartOffset(range)); selectFrames(presContext, difRange, PR_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); } dir = eDirPrevious; res = range->SetStart(aParentNode,aOffset); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); } else #endif { //deselect from a to 1 if (FetchFocusNode() != FetchAnchorNode() || FetchFocusOffset() != FetchAnchorOffset() ){//if collapsed diff dont do anything res = difRange->SetStart(FetchAnchorNode(), FetchAnchorOffset()); res |= difRange->SetEnd(FetchFocusNode(), FetchFocusOffset()); res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; selectFrames(presContext, difRange, 0); } else { res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; } //select from 2 to a selectFrames(presContext, range , PR_TRUE); } } else if (result2 >= 0 && result1 >= 0) {//2,1,a or 21,a or 2,1a or 21a //select from 2 to 1 res = range->SetStart(aParentNode,aOffset); if (NS_FAILED(res)) return res; dir = eDirPrevious; res = difRange->SetEnd(FetchFocusNode(), FetchFocusOffset()); res |= difRange->SetStart(FetchStartParent(range), FetchStartOffset(range)); if (NS_FAILED(res)) return res; #if OLD_SELECTION res = FixupSelectionPoints(range, &dir, &fixupState); #endif if (NS_FAILED(res)) return res; if (fixupState) //unselect previous and select new state has changed to not fixed up { #if OLD_SELECTION selectFrames(mAnchorFocusRange, PR_FALSE); selectFrames(range, PR_TRUE); #endif } else { selectFrames(presContext, difRange, PR_TRUE); } res = CopyRangeToAnchorFocus(range); if (NS_FAILED(res)) return res; } DEBUG_OUT_RANGE(range); #if 0 if (eDirNext == mDirection) printf(" direction = 1 LEFT TO RIGHT\n"); else printf(" direction = 0 RIGHT TO LEFT\n"); #endif SetDirection(dir); #ifdef DEBUG_SELECTION if (aParentNode) { nsCOMPtrcontent; content = do_QueryInterface(aParentNode); nsIAtom *tag; content->GetTag(tag); if (tag) { nsString tagString; tag->ToString(tagString); char * tagCString = tagString.ToNewCString(); printf ("Sel. Extend to %p %s %d\n", content, tagCString, aOffset); delete [] tagCString; } } else { printf ("Sel. Extend set to null parent.\n"); } #endif if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->NotifySelectionListeners(GetType()); } NS_IMETHODIMP nsDOMSelection::ContainsNode(nsIDOMNode* aNode, PRBool aRecursive, PRBool* aYes) { if (!aYes) return NS_ERROR_NULL_POINTER; *aYes = PR_FALSE; // Iterate over the ranges in the selection checking for the content: if (!mRangeArray) return NS_OK; PRUint32 cnt; nsresult rv = mRangeArray->Count(&cnt); if (NS_FAILED(rv)) return rv; for (PRUint32 i=0; i < cnt; ++i) { nsCOMPtr element = dont_AddRef(mRangeArray->ElementAt(i)); nsCOMPtr range = do_QueryInterface(element); if (!range) return NS_ERROR_UNEXPECTED; nsCOMPtr content (do_QueryInterface(aNode)); if (content) { if (IsNodeIntersectsRange(content, range)) { // If recursive, then we're done -- IsNodeIntersectsRange does the right thing if (aRecursive) { *aYes = PR_TRUE; return NS_OK; } // else not recursive -- node itself must be contained, // so we need to do more checking PRBool nodeStartsBeforeRange, nodeEndsAfterRange; if (NS_SUCCEEDED(CompareNodeToRange(content, range, &nodeStartsBeforeRange, &nodeEndsAfterRange))) { #ifdef DEBUG_ContainsNode nsAutoString name, value; aNode->GetNodeName(name); aNode->GetNodeValue(value); printf("%s [%s]: %d, %d\n", name.ToNewCString(), value.ToNewCString(), nodeStartsBeforeRange, nodeEndsAfterRange); #endif PRUint16 nodeType; aNode->GetNodeType(&nodeType); if ((!nodeStartsBeforeRange && !nodeEndsAfterRange) || (nodeType == nsIDOMNode::TEXT_NODE)) { *aYes = PR_TRUE; return NS_OK; } } } } } return NS_OK; } nsresult nsDOMSelection::GetPresContext(nsIPresContext **aPresContext) { if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do nsIFocusTracker *tracker = mFrameSelection->GetTracker(); if (!tracker) return NS_ERROR_NULL_POINTER; return tracker->GetPresContext(aPresContext); } nsresult nsDOMSelection::GetPresShell(nsIPresShell **aPresShell) { nsresult rv = NS_OK; if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do nsIFocusTracker *tracker = mFrameSelection->GetTracker(); if (!tracker) return NS_ERROR_NULL_POINTER; nsCOMPtr presContext; rv = tracker->GetPresContext(getter_AddRefs(presContext)); if (NS_FAILED(rv)) return rv; if (!presContext) return NS_ERROR_NULL_POINTER; nsCOMPtr presShell; rv = presContext->GetShell(aPresShell); return rv; } nsresult nsDOMSelection::GetRootScrollableView(nsIScrollableView **aScrollableView) { // // NOTE: This method returns a NON-AddRef'd pointer // to the scrollable view! // if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do nsresult rv = NS_OK; nsCOMPtr presShell; rv = GetPresShell(getter_AddRefs(presShell)); if (NS_FAILED(rv)) return rv; if (!presShell) return NS_ERROR_NULL_POINTER; nsCOMPtr viewManager; rv = presShell->GetViewManager(getter_AddRefs(viewManager)); if (NS_FAILED(rv)) return rv; if (!viewManager) return NS_ERROR_NULL_POINTER; // // nsIViewManager::GetRootScrollableView() does not // AddRef the pointer it returns. // return viewManager->GetRootScrollableView(aScrollableView); } nsresult nsDOMSelection::GetFrameToRootViewOffset(nsIFrame *aFrame, nscoord *aX, nscoord *aY) { nsresult rv = NS_OK; if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do if (!aFrame || !aX || !aY) { return NS_ERROR_NULL_POINTER; } *aX = 0; *aY = 0; nsIScrollableView* scrollingView = 0; rv = GetRootScrollableView(&scrollingView); if (NS_FAILED(rv)) return rv; if (!scrollingView) return NS_ERROR_NULL_POINTER; nsIView* scrolledView; nsPoint offset; nsIView* closestView; // Determine the offset from aFrame to the scrolled view. We do that by // getting the offset from its closest view and then walking up scrollingView->GetScrolledView(scrolledView); nsIFocusTracker *tracker = mFrameSelection->GetTracker(); if (!tracker) return NS_ERROR_NULL_POINTER; nsCOMPtr presContext; tracker->GetPresContext(getter_AddRefs(presContext)); aFrame->GetOffsetFromView(presContext, offset, &closestView); // XXX Deal with the case where there is a scrolled element, e.g., a // DIV in the middle... while ((closestView != nsnull) && (closestView != scrolledView)) { nscoord dx, dy; // Update the offset closestView->GetPosition(&dx, &dy); offset.MoveBy(dx, dy); // Get its parent view closestView->GetParent(closestView); } *aX = offset.x; *aY = offset.y; return rv; } nsresult nsDOMSelection::GetPointFromOffset(nsIFrame *aFrame, PRInt32 aContentOffset, nsPoint *aPoint) { nsresult rv = NS_OK; if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do if (!aFrame || !aPoint) return NS_ERROR_NULL_POINTER; aPoint->x = 0; aPoint->y = 0; // // Retrieve the device context. We need one to create // a rendering context. // nsIFocusTracker *tracker = mFrameSelection->GetTracker(); if (!tracker) return NS_ERROR_NULL_POINTER; nsCOMPtr presContext; rv = tracker->GetPresContext(getter_AddRefs(presContext)); if (NS_FAILED(rv)) return rv; if (!presContext) return NS_ERROR_NULL_POINTER; nsCOMPtr deviceContext; rv = presContext->GetDeviceContext(getter_AddRefs(deviceContext)); if (NS_FAILED(rv)) return rv; if (!deviceContext) return NS_ERROR_NULL_POINTER; // // Now get the closest view with a widget so we can create // a rendering context. // nsCOMPtr widget; nsIView *closestView = 0; nsPoint offset(0, 0); rv = aFrame->GetOffsetFromView(presContext, offset, &closestView); while (!widget && closestView) { rv = closestView->GetWidget(*getter_AddRefs(widget)); if (NS_FAILED(rv)) return rv; if (!widget) { rv = closestView->GetParent(closestView); if (NS_FAILED(rv)) return rv; } } if (!closestView) return NS_ERROR_FAILURE; // // Create a rendering context. This context is used by text frames // to calculate text widths so it can figure out where the point is // in the frame. // nsCOMPtr rendContext; rv = deviceContext->CreateRenderingContext(closestView, *getter_AddRefs(rendContext)); if (NS_FAILED(rv)) return rv; if (!rendContext) return NS_ERROR_NULL_POINTER; // // Now get the point and return! // rv = aFrame->GetPointFromOffset(presContext, rendContext, aContentOffset, aPoint); return rv; } nsresult nsDOMSelection::GetSelectionRegionRect(SelectionRegion aRegion, nsRect *aRect) { nsresult result = NS_OK; if (!mFrameSelection) return NS_ERROR_FAILURE;//nothing to do if (!aRect) return NS_ERROR_NULL_POINTER; // Init aRect: aRect->x = 0; aRect->y = 0; aRect->width = 0; aRect->height = 0; nsIDOMNode *node = 0; PRInt32 nodeOffset = 0; PRBool isEndNode = PR_TRUE; nsIFrame *frame = 0; switch (aRegion) { case nsISelectionController::SELECTION_ANCHOR_REGION: node = FetchAnchorNode(); nodeOffset = FetchAnchorOffset(); isEndNode = GetDirection() == eDirPrevious; break; case nsISelectionController::SELECTION_FOCUS_REGION: node = FetchFocusNode(); nodeOffset = FetchFocusOffset(); isEndNode = GetDirection() == eDirNext; break; default: return NS_ERROR_FAILURE; } if (!node) return NS_ERROR_NULL_POINTER; nsCOMPtr content = do_QueryInterface(node); PRInt32 frameOffset = 0; if (content) result = mFrameSelection->GetFrameForNodeOffset(content, nodeOffset, &frame, &frameOffset); else result = NS_ERROR_FAILURE; if(NS_FAILED(result)) return result; if (!frame) return NS_ERROR_NULL_POINTER; PRUint16 nodeType = nsIDOMNode::ELEMENT_NODE; result = node->GetNodeType(&nodeType); if (NS_FAILED(result)) return NS_ERROR_NULL_POINTER; if (nodeType == nsIDOMNode::TEXT_NODE) { nsIFrame *childFrame = 0; frameOffset = 0; result = frame->GetChildFrameContainingOffset(nodeOffset, mFrameSelection->mHint, &frameOffset, &childFrame); if (NS_FAILED(result)) return result; if (!childFrame) return NS_ERROR_NULL_POINTER; frame = childFrame; // // Get the x coordinate of the offset into the text frame. // The x coordinate will be relative to the frame's origin, // so we'll have to translate it into the root view's coordinate // system. // nsPoint pt; result = GetPointFromOffset(frame, nodeOffset, &pt); if (NS_FAILED(result)) return result; // // Get the frame's rect. // result = frame->GetRect(*aRect); if (NS_FAILED(result)) return result; // // Translate the frame's rect into root view coordinates. // result = GetFrameToRootViewOffset(frame, &aRect->x, &aRect->y); if (NS_FAILED(result)) return result; // // Now add the offset's x coordinate. // aRect->x += pt.x; // // Adjust the width of the rect to account for any neccessary // padding! // nsIScrollableView *scrollingView = 0; result = GetRootScrollableView(&scrollingView); if (NS_FAILED(result)) return result; const nsIView* clipView = 0; nsRect clipRect; result = scrollingView->GetScrollPosition(clipRect.x, clipRect.y); if (NS_FAILED(result)) return result; result = scrollingView->GetClipView(&clipView); if (NS_FAILED(result)) return result; result = clipView->GetDimensions(&clipRect.width, &clipRect.height); if (NS_FAILED(result)) return result; // If the point we are interested is outside the clip // region, we will scroll it into view with a padding // equal to a quarter of the clip's width. PRInt32 pad = clipRect.width >> 2; if (pad <= 0) pad = 3; // Arbitrary if (aRect->x >= clipRect.XMost()) aRect->width = pad; else if (aRect->x <= clipRect.x) { aRect->x -= pad; aRect->width = pad; } else aRect->width = 60; // Arbitrary } else { // // Must be a non-text frame, just scroll the frame // into view. // result = frame->GetRect(*aRect); if (NS_FAILED(result)) return result; result = GetFrameToRootViewOffset(frame, &aRect->x, &aRect->y); } return result; } nsresult nsDOMSelection::ScrollRectIntoView(nsRect& aRect, PRIntn aVPercent, PRIntn aHPercent) { nsresult rv = NS_OK; if (!mFrameSelection) return NS_OK;//nothing to do nsIScrollableView *scrollingView = 0; rv = GetRootScrollableView(&scrollingView); if (NS_FAILED(rv)) return rv; if (! scrollingView) return NS_ERROR_NULL_POINTER; // Determine the visible rect in the scrolled view's coordinate space. // The size of the visible area is the clip view size const nsIView* clipView; nsRect visibleRect; scrollingView->GetScrollPosition(visibleRect.x, visibleRect.y); scrollingView->GetClipView(&clipView); clipView->GetDimensions(&visibleRect.width, &visibleRect.height); // The actual scroll offsets nscoord scrollOffsetX = visibleRect.x; nscoord scrollOffsetY = visibleRect.y; // See how aRect should be positioned vertically if (NS_PRESSHELL_SCROLL_ANYWHERE == aVPercent) { // The caller doesn't care where aRect is positioned vertically, // so long as it's fully visible if (aRect.y < visibleRect.y) { // Scroll up so aRect's top edge is visible scrollOffsetY = aRect.y; } else if (aRect.YMost() > visibleRect.YMost()) { // Scroll down so aRect's bottom edge is visible. Make sure // aRect's top edge is still visible scrollOffsetY += aRect.YMost() - visibleRect.YMost(); if (scrollOffsetY > aRect.y) { scrollOffsetY = aRect.y; } } } else { // Align the aRect edge according to the specified percentage nscoord frameAlignY = aRect.y + (aRect.height * aVPercent) / 100; scrollOffsetY = frameAlignY - (visibleRect.height * aVPercent) / 100; } // See how the aRect should be positioned horizontally if (NS_PRESSHELL_SCROLL_ANYWHERE == aHPercent) { // The caller doesn't care where the aRect is positioned horizontally, // so long as it's fully visible if (aRect.x < visibleRect.x) { // Scroll left so the aRect's left edge is visible scrollOffsetX = aRect.x; } else if (aRect.XMost() > visibleRect.XMost()) { // Scroll right so the aRect's right edge is visible. Make sure the // aRect's left edge is still visible scrollOffsetX += aRect.XMost() - visibleRect.XMost(); if (scrollOffsetX > aRect.x) { scrollOffsetX = aRect.x; } } } else { // Align the aRect edge according to the specified percentage nscoord frameAlignX = aRect.x + (aRect.width * aHPercent) / 100; scrollOffsetX = frameAlignX - (visibleRect.width * aHPercent) / 100; } scrollingView->ScrollTo(scrollOffsetX, scrollOffsetY, NS_VMREFRESH_IMMEDIATE); return rv; } NS_IMETHODIMP nsDOMSelection::ScrollIntoView(SelectionRegion aRegion) { nsresult result; if (!mFrameSelection) return NS_OK;//nothing to do if (mFrameSelection->GetBatching()) return NS_OK; // // Shut the caret off before scrolling to avoid // leaving caret turds on the screen! // nsCOMPtr presShell; result = GetPresShell(getter_AddRefs(presShell)); if (NS_FAILED(result)) return result; nsCOMPtr selCon; selCon = do_QueryInterface(presShell); if (selCon) { StCaretHider caretHider(selCon); // stack-based class hides and shows the caret // // Scroll the selection region into view. // nsRect rect; result = GetSelectionRegionRect(aRegion, &rect); if (NS_FAILED(result)) return result; result = ScrollRectIntoView(rect, NS_PRESSHELL_SCROLL_ANYWHERE, NS_PRESSHELL_SCROLL_ANYWHERE); } return result; } NS_IMETHODIMP nsDOMSelection::AddSelectionListener(nsIDOMSelectionListener* aNewListener) { if (!mSelectionListeners) return NS_ERROR_FAILURE; if (!aNewListener) return NS_ERROR_NULL_POINTER; nsresult result; nsCOMPtr isupports = do_QueryInterface(aNewListener , &result); if (NS_SUCCEEDED(result)) result = mSelectionListeners->AppendElement(isupports) ? NS_OK : NS_ERROR_FAILURE; // addrefs return result; } NS_IMETHODIMP nsDOMSelection::RemoveSelectionListener(nsIDOMSelectionListener* aListenerToRemove) { if (!mSelectionListeners) return NS_ERROR_FAILURE; if (!aListenerToRemove ) return NS_ERROR_NULL_POINTER; nsCOMPtr isupports = do_QueryInterface(aListenerToRemove); return mSelectionListeners->RemoveElement(isupports) ? NS_OK : NS_ERROR_FAILURE; // releases } nsresult nsDOMSelection::NotifySelectionListeners() { if (!mSelectionListeners) return NS_ERROR_FAILURE; if (!mFrameSelection) return NS_OK;//nothing to do if (mFrameSelection->GetBatching()){ mFrameSelection->SetDirty(); return NS_OK; } PRUint32 cnt; nsresult rv = mSelectionListeners->Count(&cnt); if (NS_FAILED(rv)) return rv; nsCOMPtr domdoc; nsCOMPtr doc; nsCOMPtr shell; rv = GetPresShell(getter_AddRefs(shell)); if (NS_SUCCEEDED(rv) && shell) { rv = shell->GetDocument(getter_AddRefs(doc)); if (NS_FAILED(rv)) doc = 0; domdoc = do_QueryInterface(doc); } for (PRUint32 i = 0; i < cnt;i++) { nsCOMPtr isupports(dont_AddRef(mSelectionListeners->ElementAt(i))); nsCOMPtr thisListener = do_QueryInterface(isupports); if (thisListener) thisListener->NotifySelectionChanged(domdoc,this, (short) mFrameSelection->mMouseDownState); } return NS_OK; } NS_IMETHODIMP nsDOMSelection::StartBatchChanges() { if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->StartBatchChanges(); } NS_IMETHODIMP nsDOMSelection::EndBatchChanges() { if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->EndBatchChanges(); } NS_IMETHODIMP nsDOMSelection::DeleteFromDocument() { if (!mFrameSelection) return NS_OK;//nothing to do return mFrameSelection->DeleteFromDocument(); } // BEGIN nsIScriptObjectOwner interface implementations NS_IMETHODIMP nsDOMSelection::GetScriptObject(nsIScriptContext *aContext, void** aScriptObject) { nsresult res = NS_OK; nsIScriptGlobalObject *globalObj = aContext->GetGlobalObject(); if (nsnull == mScriptObject) { res = NS_NewScriptSelection(aContext, (nsISupports *)(nsIDOMSelection *)this, globalObj, (void**)&mScriptObject); } *aScriptObject = mScriptObject; NS_RELEASE(globalObj); return res; } NS_IMETHODIMP nsDOMSelection::SetScriptObject(void *aScriptObject) { mScriptObject = aScriptObject; return NS_OK; } // END nsIScriptObjectOwner interface implementations