pjs/layout/generic/nsSelection.cpp

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/* -*- 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.
*
*/
/*
* 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 "nsIDOMNodeList.h"
#include "nsITextContent.h"
#include "nsIDOMSelectionListener.h"
#include "nsIContentIterator.h"
#include "nsIDocumentEncoder.h"
#include "nsIIndependentSelection.h"
#include "nsIPref.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<nsIAtom> 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
#if DEBUG_cmanske
//#define DEBUG_TABLE_SELECTION 1
#endif
class nsSelectionIterator;
class nsSelection;
class nsAutoScrollTimer;
class nsDOMSelection : public nsIDOMSelection , public nsIScriptObjectOwner, public nsSupportsWeakReference, public nsIIndependentSelection
{
public:
nsDOMSelection();
nsDOMSelection(nsSelection *aList);
virtual ~nsDOMSelection();
NS_DECL_ISUPPORTS
/*BEGIN nsIIndependentSelection interface implementations */
NS_IMETHOD SetPresShell(nsIPresShell *aPresShell);
/*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 SelectAllChildren(nsIDOMNode* parentNode);
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(const nsAReadableString& aFormatType, PRUint32 aFlags, PRInt32 aWrapCount, nsAWritableString& 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 GetFrameToScrolledViewOffsets(nsIScrollableView *aScrollableView, nsIFrame *aFrame, nscoord *aXOffset, nscoord *aYOffset);
nsresult GetPointFromOffset(nsIFrame *aFrame, PRInt32 aContentOffset, nsPoint *aPoint);
nsresult GetSelectionRegionRectAndScrollableView(SelectionRegion aRegion, nsRect *aRect, nsIScrollableView **aScrollableView);
nsresult ScrollRectIntoView(nsIScrollableView *aScrollableView, nsRect& aRect, PRIntn aVPercent, PRIntn aHPercent, PRBool aScrollParentViews);
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);
// helpers for ContainsNode()
enum Endpoint
{
kStart,
kEnd
};
nsresult PromoteRange(nsIDOMRange *inRange);
nsresult GetPromotedPoint(Endpoint aWhere, nsIDOMNode *aNode, PRInt32 aOffset,
nsCOMPtr<nsIDOMNode> *outNode, PRInt32 *outOffset);
nsCOMPtr<nsIDOMNode> GetChildAt(nsIDOMNode *aParent, PRInt32 aOffset);
PRBool IsTextNode(nsIDOMNode *aNode);
PRBool IsBody(nsIDOMNode* aNode);
nsresult GetNodeLocation(nsIDOMNode *inChild, nsCOMPtr<nsIDOMNode> *outParent, PRInt32 *outOffset);
PRBool IsFirstNode(nsIDOMNode *aNode);
PRBool IsLastNode(nsIDOMNode *aNode);
nsresult GetLengthOfDOMNode(nsIDOMNode *aNode, PRUint32 &aCount);
PRBool IsEmptyTextContent(nsIDOMNode* aNode);
// 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);
nsresult DoAutoScrollView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool aScrollParentViews);
nsresult ScrollPointIntoClipView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool *aDidScroll);
nsresult ScrollPointIntoView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool aScrollParentViews, PRBool *aDidScroll);
nsresult GetViewAncestorOffset(nsIView *aView, nsIView *aAncestorView, nscoord *aXOffset, nscoord *aYOffset);
nsresult GetClosestScrollableView(nsIView *aView, nsIScrollableView **aScrollableView);
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<nsISupportsArray> mRangeArray;
nsCOMPtr<nsIDOMRange> mAnchorFocusRange;
nsCOMPtr<nsIDOMRange> 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;
nsWeakPtr mPresShellWeak; //weak reference to presshell.
// for nsIScriptObjectOwner
void* mScriptObject;
SelectionType mType;//type of this nsDOMSelection;
nsAutoScrollTimer *mAutoScrollTimer; // timer for autoscrolling.
nsCOMPtr<nsISupportsArray> mSelectionListeners;
};
// Stack-class to turn on/off selection batching for table selection
class nsSelectionBatcher
{
private:
nsCOMPtr<nsIDOMSelection> 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 SetScrollableView(nsIScrollableView *aScrollView);
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 != 0; return NS_OK;}return NS_ERROR_NULL_POINTER;}
NS_IMETHOD ClearTableCellSelection(){mSelectingTableCellMode = 0; return NS_OK;}
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, HINT aHint, nsIFrame **aReturnFrame, PRInt32 *aReturnOffset);
NS_IMETHOD AdjustOffsetsFromStyle(nsIFrame *aFrame, PRBool *changeSelection,
nsIContent** outContent, PRInt32* outStartOffset, PRInt32* outEndOffset);
NS_IMETHOD SetHint(HINT aHintRight);
NS_IMETHOD GetHint(HINT *aHintRight);
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);
NS_IMETHOD SetDelayCaretOverExistingSelection(PRBool aDelay);
NS_IMETHOD GetDelayCaretOverExistingSelection(PRBool *aDelay);
NS_IMETHOD SetDelayedCaretData(nsMouseEvent *aMouseEvent);
NS_IMETHOD GetDelayedCaretData(nsMouseEvent **aMouseEvent);
NS_IMETHOD GetLimiter(nsIContent **aLimiterContent);
/*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);
//post and pop reasons for notifications. we may stack these later
void PostReason(short aReason){mReason = aReason;}
short PopReason(){short retval = mReason; mReason=0;return retval;}
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?
// utility method to lookup frame style
nsresult FrameOrParentHasSpecialSelectionStyle(nsIFrame* aFrame, PRUint8 aSelectionStyle, nsIFrame* *foundFrame);
nsDOMSelection *mDomSelections[nsISelectionController::NUM_SELECTIONTYPES];
nsIScrollableView *GetScrollView(){return mScrollView;}
// Table selection support.
// Interfaces that let us get info based on cellmap locations
nsITableLayout* GetTableLayout(nsIContent *aTableContent);
nsITableCellLayout* GetCellLayout(nsIContent *aCellContent);
nsresult SelectBlockOfCells(nsIContent *aEndNode);
nsresult SelectRowOrColumn(nsIContent *aCellContent, PRUint32 aTarget);
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 SelectCellElement(nsIDOMElement* aCellElement);
nsresult CreateAndAddRange(nsIDOMNode *aParentNode, PRInt32 aOffset);
nsresult ClearNormalSelection();
nsCOMPtr<nsIContent> mStartSelectedCell;
nsCOMPtr<nsIContent> mEndSelectedCell;
nsCOMPtr<nsIContent> mAppendStartSelectedCell;
nsCOMPtr<nsIContent> mUnselectCellOnMouseUp;
PRBool mSelectingTableCells;
PRUint32 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;
nsIScrollableView *mScrollView;
PRBool mDelayCaretOverExistingSelection;
PRBool mDelayedMouseEventValid;
nsMouseEvent mDelayedMouseEvent;
short mReason; //reason for notifications of selection changing
public:
static nsIAtom *sTableAtom;
static nsIAtom *sRowAtom;
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), mView(0), mPresContext(0), mPoint(0,0), mDelay(30)
{
NS_INIT_ISUPPORTS();
}
virtual ~nsAutoScrollTimer()
{
if (mTimer)
mTimer->Cancel();
}
nsresult Start(nsIPresContext *aPresContext, nsIView *aView, nsPoint &aPoint)
{
mView = aView;
mPresContext = aPresContext;
mPoint = aPoint;
if (!mTimer)
{
nsresult result;
mTimer = do_CreateInstance("component://netscape/timer", &result);
if (NS_FAILED(result))
return result;
}
return mTimer->Init(this, mDelay);
}
nsresult Stop()
{
nsresult result = NS_OK;
if (mTimer)
{
mTimer->Cancel();
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 && mView)
{
void *clientData = 0;
mView->GetClientData(clientData);
nsIFrame *frame = (nsIFrame *)clientData;
if (!frame)
return;
//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<nsIContent> newContent;
nsresult result = frame->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->DoAutoScrollView(mPresContext, mView, mPoint, PR_TRUE);
}
}
private:
nsSelection *mFrameSelection;
nsDOMSelection *mSelection;
nsCOMPtr<nsITimer> mTimer;
nsIView *mView;
nsIPresContext *mPresContext;
nsPoint mPoint;
PRUint32 mDelay;
};
NS_IMPL_ADDREF(nsAutoScrollTimer)
NS_IMPL_RELEASE(nsAutoScrollTimer)
NS_IMPL_QUERY_INTERFACE1(nsAutoScrollTimer, nsITimerCallback)
nsresult NS_NewAutoScrollTimer(nsAutoScrollTimer **aResult);
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::sRowAtom = 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<nsISupports> 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;i<nsISelectionController::NUM_SELECTIONTYPES;i++){
mDomSelections[i] = nsnull;
}
for (i = 0;i<nsISelectionController::NUM_SELECTIONTYPES;i++){
mDomSelections[i] = new nsDOMSelection(this);
if (!mDomSelections[i])
return;
mDomSelections[i]->AddRef();
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");
sRowAtom = NS_NewAtom("tr");
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 = 0;
mSelectedCellIndex = 0;
// Check to see if the autocopy pref is enabled
// and add the autocopy listener if it is
nsresult rv;
NS_WITH_SERVICE(nsIPref, prefs, "component://netscape/preferences", &rv);
if (NS_SUCCEEDED(rv) && prefs)
{
static char pref[] = "clipboard.autocopy";
PRBool autoCopy = PR_FALSE;
if (NS_SUCCEEDED(prefs->GetBoolPref(pref, &autoCopy)) && autoCopy)
{
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;
mDelayCaretOverExistingSelection = PR_TRUE;
mDelayedMouseEventValid = PR_FALSE;
mReason = nsIDOMSelectionListener::NO_REASON;
}
nsSelection::~nsSelection()
{
if (sInstanceCount <= 1)
{
NS_IF_RELEASE(sTableAtom);
NS_IF_RELEASE(sRowAtom);
NS_IF_RELEASE(sCellAtom);
NS_IF_RELEASE(sTbodyAtom);
}
PRInt32 i;
for (i = 0;i<nsISelectionController::NUM_SELECTIONTYPES;i++){
if (mDomSelections[i])
NS_IF_RELEASE(mDomSelections[i]);
}
sInstanceCount--;
}
NS_IMPL_ADDREF(nsSelection)
NS_IMPL_RELEASE(nsSelection)
NS_IMETHODIMP
nsSelection::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (nsnull == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIFrameSelection))) {
nsIFrameSelection* tmp = this;
*aInstancePtr = (void*) tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsISupports))) {
// use *first* base class for ISupports
nsIFrameSelection* tmp1 = this;
nsISupports* tmp2 = tmp1;
*aInstancePtr = (void*) tmp2;
NS_ADDREF_THIS();
return NS_OK;
}
NS_ASSERTION(PR_FALSE,"bad query interface in FrameSelection");
return NS_NOINTERFACE;
}
nscoord
nsSelection::FetchDesiredX() //the x position requested by the Key Handling for up down
{
if (!mTracker)
{
NS_ASSERTION(0,"fetch desired X failed\n");
return -1;
}
if (mDesiredXSet)
return mDesiredX;
else {
nsRect coord;
PRBool collapsed;
nsCOMPtr<nsICaret> caret;
nsCOMPtr<nsIPresContext> context;
nsCOMPtr<nsIPresShell> 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<nsIContent> parent = do_QueryInterface(aContent);
nsCOMPtr<nsIContent> 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<nsIDOMNode> 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<nsIContent> anchorContent = do_QueryInterface(anchorNode);
if (!anchorContent)
return NS_ERROR_FAILURE;
result = GetFrameForNodeOffset(anchorContent, anchorOffset, mHint, &anchorFrame, &anchorFrameOffset);
//
// Now find the root of the subtree containing the anchor's content.
//
nsCOMPtr<nsIContent> 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<nsIContent> content;
result = aFrame->GetContent(getter_AddRefs(content));
if (NS_FAILED(result))
return result;
if (content)
{
nsCOMPtr<nsIContent> 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<nsIDOMNode> startNode;
nsCOMPtr<nsIDOMNode> 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<nsIAtom> GetTag(nsIDOMNode *aNode)
{
nsCOMPtr<nsIAtom> atom;
if (!aNode)
{
NS_NOTREACHED("null node passed to GetTag()");
return atom;
}
nsCOMPtr<nsIContent> 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<nsIContent> content;
result = aNode->QueryInterface(NS_GET_IID(nsIContent),getter_AddRefs(content));
if (NS_SUCCEEDED(result) && content)
{
nsCOMPtr<nsIContent> 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;
mScrollView = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::SetScrollableView(nsIScrollableView *aScrollView)
{
mScrollView = aScrollView;
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<nsIPresContext> context;
nsresult result = mTracker->GetPresContext(getter_AddRefs(context));
if (NS_FAILED(result) || !context)
return result?result:NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> 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<nsIContent> content;
result = frame->GetContent(getter_AddRefs(content));
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(content);
nsCOMPtr<nsIDOMNode> 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<nsIDOMText> 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
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
break;
case nsIDOMKeyEvent::DOM_VK_LEFT : //no break
InvalidateDesiredX();
mHint = HINTRIGHT;//stick to opposite of movement
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
break;
case nsIDOMKeyEvent::DOM_VK_DOWN :
pos.mAmount = eSelectLine;
pos.mDirection = eDirNext;//no break here
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
break;
case nsIDOMKeyEvent::DOM_VK_UP :
pos.mAmount = eSelectLine;
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
break;
case nsIDOMKeyEvent::DOM_VK_HOME :
InvalidateDesiredX();
pos.mAmount = eSelectBeginLine;
mHint = HINTRIGHT;//stick to opposite of movement
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
break;
case nsIDOMKeyEvent::DOM_VK_END :
InvalidateDesiredX();
pos.mAmount = eSelectEndLine;
mHint = HINTLEFT;//stick to this line
PostReason(nsIDOMSelectionListener::KEYPRESS_REASON);
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;
PostReason(nsIDOMSelectionListener::MOUSEUP_REASON);//force an update as though we used the mouse.
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(const nsAReadableString& aFormatType, PRUint32 aFlags, PRInt32 aWrapCount, nsAWritableString& aReturn)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIDocumentEncoder> encoder;
nsCAutoString formatType( NS_DOC_ENCODER_PROGID_BASE );
formatType.AppendWithConversion(aFormatType);
rv = nsComponentManager::CreateInstance(formatType,
nsnull,
NS_GET_IID(nsIDocumentEncoder),
getter_AddRefs(encoder));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPresShell> shell;
rv = GetPresShell(getter_AddRefs(shell));
if (NS_FAILED(rv) || !shell) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocument> doc;
rv = shell->GetDocument(getter_AddRefs(doc));
NS_ENSURE_SUCCESS(rv, rv);
// Flags should always include OutputSelectionOnly if we're coming from here:
aFlags |= nsIDocumentEncoder::OutputSelectionOnly;
rv = encoder->Init(doc, aFormatType, aFlags);
NS_ENSURE_SUCCESS(rv, rv);
encoder->SetSelection(this);
if (aWrapCount != 0)
encoder->SetWrapColumn(aWrapCount);
rv = encoder->EncodeToString(aReturn);
return rv;
}
NS_IMETHODIMP
nsDOMSelection::SetHint(PRBool aHintRight)
{
nsIFrameSelection::HINT hint;
if (aHintRight)
hint = nsIFrameSelection::HINTRIGHT;
else
hint = nsIFrameSelection::HINTLEFT;
return mFrameSelection->SetHint(hint);
}
NS_IMETHODIMP
nsDOMSelection::GetHint(PRBool *aHintRight)
{
nsIFrameSelection::HINT hint;
nsresult rv = mFrameSelection->GetHint(&hint);
if (hint == nsIFrameSelection::HINTRIGHT)
*aHintRight = PR_TRUE;
else
*aHintRight = PR_FALSE;
return rv;
}
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)
{
PostReason(nsIDOMSelectionListener::MOUSEDOWN_REASON + nsIDOMSelectionListener::DRAG_REASON);
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<nsIPresShell> presShell;
result = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_FAILED(result))
return result;
PRInt32 startPos = 0;
PRInt32 contentOffsetEnd = 0;
PRBool beginOfContent;
nsCOMPtr<nsIContent> newContent;
result = newFrame->GetContentAndOffsetsFromPoint(aPresContext, newPoint,
getter_AddRefs(newContent),
startPos, contentOffsetEnd, beginOfContent);
// do we have CSS that changes selection behaviour?
{
PRBool changeSelection;
nsCOMPtr<nsIContent> selectContent;
PRInt32 newStart, newEnd;
if (NS_SUCCEEDED(AdjustOffsetsFromStyle(newFrame, &changeSelection, getter_AddRefs(selectContent), &newStart, &newEnd))
&& changeSelection)
{
newContent = selectContent;
startPos = newStart;
contentOffsetEnd = newEnd;
}
}
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;
STATUS_CHECK_RETURN_MACRO();
if (mLimiter )
{
nsCOMPtr<nsIContent> parent;
nsresult rv = aNewFocus->GetParent(*getter_AddRefs(parent));
if (NS_FAILED(rv))
return rv;
if (mLimiter != parent.get() && mLimiter != aNewFocus) //if newfocus == the limiter. thats ok.
return NS_ERROR_FAILURE; //not in the right content. mLimiter said so
}
//HACKHACKHACK
nsCOMPtr<nsIContent> content;
nsCOMPtr<nsIDOMNode> domNode;
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> 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<nsIDOMRange> 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);
}
}
// Don't notify selection listeners if batching is on:
if (GetBatching())
return NS_OK;
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();
// Never use "slow check" when in table selection mode
if (aSlowCheck)
aSlowCheck = (mSelectingTableCellMode == 0);
*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<<j), aSlowCheck);
}
return NS_OK;
}
NS_METHOD
nsSelection::SetMouseDownState(PRBool aState)
{
if (mMouseDownState == aState)
return NS_OK;
mMouseDownState = aState;
if (!mMouseDownState)
{
// Mouse up kills dragging-table cell selection
#ifdef DEBUG_TABLE_SELECTION
printf("SetMouseDownState to FALSE - stopping cell selection\n");
#endif
mSelectingTableCells = PR_FALSE;
mStartSelectedCell = nsnull;
mEndSelectedCell = nsnull;
PostReason(aState?nsIDOMSelectionListener::MOUSEDOWN_REASON:nsIDOMSelectionListener::MOUSEUP_REASON);//not a drag reason
NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL);//notify that reason is mouse up please.
}
return NS_OK;
}
NS_METHOD
nsSelection::GetMouseDownState(PRBool *aState)
{
if (!aState)
return NS_ERROR_NULL_POINTER;
*aState = mMouseDownState;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::GetTableCellSelectionStyleColor(const nsStyleColor **aStyleColor)
{
if (!aStyleColor)
return NS_ERROR_NULL_POINTER;
*aStyleColor = &sTableStyleColor;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::GetSelection(SelectionType aType, nsIDOMSelection **aDomSelection)
{
if (!aDomSelection)
return NS_ERROR_NULL_POINTER;
PRInt8 index = GetIndexFromSelectionType(aType);
if (index < 0)
return NS_ERROR_INVALID_ARG;
*aDomSelection = mDomSelections[index];
(*aDomSelection)->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, HINT aHint, 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<nsIContent> theNode = aNode;
if (canContainChildren)
{
PRInt32 childIndex = 0;
PRInt32 numChildren = 0;
if (aHint == 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<nsIContent> 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, aHint, 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<nsIDOMText> 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, aHint, &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()
{
nsCOMPtr<nsIContent> rootContent;
if (mLimiter)
{
rootContent = mLimiter;//addrefit
}
else
{
nsresult rv;
nsCOMPtr<nsIPresShell> shell(do_QueryInterface(mTracker,&rv));
if (NS_FAILED(rv) || !shell) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocument> doc;
rv = shell->GetDocument(getter_AddRefs(doc));
if (NS_FAILED(rv) || !doc)
return rv?rv:NS_ERROR_FAILURE;
rootContent = getter_AddRefs(doc->GetRootContent());
if (!rootContent)
return NS_ERROR_FAILURE;
}
PRInt32 numChildren;
rootContent->ChildCount(numChildren);
PostReason(nsIDOMSelectionListener::NO_REASON);
return TakeFocus(mLimiter, 0, numChildren, PR_FALSE, PR_FALSE);
}
//////////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;
}
nsresult
nsSelection::FrameOrParentHasSpecialSelectionStyle(nsIFrame* aFrame, PRUint8 aSelectionStyle, nsIFrame* *foundFrame)
{
nsIFrame* thisFrame = aFrame;
while (thisFrame)
{
const nsStyleUserInterface* userinterface;
thisFrame->GetStyleData(eStyleStruct_UserInterface, (const nsStyleStruct*&)userinterface);
if (userinterface->mUserSelect == aSelectionStyle)
{
*foundFrame = thisFrame;
return NS_OK;
}
thisFrame->GetParent(&thisFrame);
}
*foundFrame = nsnull;
return NS_OK;
}
// Start of Table Selection methods
static PRBool IsCell(nsIContent *aContent)
{
nsIAtom *tag;
aContent->GetTag(tag);
return (tag != 0 && tag == nsSelection::sCellAtom);
}
nsITableCellLayout*
nsSelection::GetCellLayout(nsIContent *aCellContent)
{
// Get frame for cell
nsIFrame *cellFrame = nsnull;
nsresult result = GetTracker()->GetPrimaryFrameFor(aCellContent, &cellFrame);
if (!cellFrame) return nsnull;
nsITableCellLayout *cellLayoutObject = nsnull;
result = cellFrame->QueryInterface(NS_GET_IID(nsITableCellLayout), (void**)(&cellLayoutObject));
if (NS_FAILED(result)) return nsnull;
return cellLayoutObject;
}
nsITableLayout*
nsSelection::GetTableLayout(nsIContent *aTableContent)
{
// Get frame for table
nsIFrame *tableFrame = nsnull;
nsresult result = GetTracker()->GetPrimaryFrameFor(aTableContent, &tableFrame);
if (!tableFrame) return nsnull;
nsITableLayout *tableLayoutObject = nsnull;
result = tableFrame->QueryInterface(NS_GET_IID(nsITableLayout), (void**)(&tableLayoutObject));
if (NS_FAILED(result)) return nsnull;
return tableLayoutObject;
}
nsresult
nsSelection::ClearNormalSelection()
{
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
return mDomSelections[index]->ClearSelection();
}
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<nsIDOMNode> parentNode = do_QueryInterface(aParentContent);
if (!parentNode) return NS_ERROR_FAILURE;
nsCOMPtr<nsIContent> childContent;
nsresult result = aParentContent->ChildAt(aContentOffset, *getter_AddRefs(childContent));
if (NS_FAILED(result)) return result;
if (!childContent) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> childNode = do_QueryInterface(childContent);
if (!childNode) return NS_ERROR_FAILURE;
// 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
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
mDomSelections[index]->SetDirection(eDirNext);
// Stack-class to wrap all table selection changes in
// BeginBatchChanges() / EndBatchChanges()
nsSelectionBatcher selectionBatcher(mDomSelections[index]);
PRInt32 startRowIndex, startColIndex, curRowIndex, curColIndex;
if (mSelectingTableCells)
{
// We are drag-selecting
if (aTarget != TABLESELECTION_TABLE)
{
// If dragging in the same cell as last event, do nothing
if (mEndSelectedCell == childContent)
return NS_OK;
// aTarget can be any "cell mode",
// so we can easily drag-select rows and columns
// Once we are in row or column mode,
// we can drift into any cell to stay in that mode
// even if aTarget = TABLESELECTION_CELL
if (mSelectingTableCellMode == TABLESELECTION_ROW ||
mSelectingTableCellMode == TABLESELECTION_COLUMN)
{
if (mEndSelectedCell)
{
// Also check if cell is in same row/col
result = GetCellIndexes(mEndSelectedCell, startRowIndex, startColIndex);
if (NS_FAILED(result)) return result;
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
if (NS_FAILED(result)) return result;
if ((mSelectingTableCellMode == TABLESELECTION_ROW && startRowIndex == curRowIndex) ||
(mSelectingTableCellMode == TABLESELECTION_COLUMN && startColIndex == curColIndex))
return NS_OK;
}
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Dragged into a new column or row\n");
#endif
// Continue dragging row or column selection
return SelectRowOrColumn(childContent, mSelectingTableCellMode);
}
else if (mSelectingTableCellMode == TABLESELECTION_CELL)
{
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Dragged into a new cell\n");
#endif
// Clear this to be sure SelectBlockOfCells works correctly
mAppendStartSelectedCell = nsnull;
// Trick for quick selection of rows and columns
// Hold down shift, then start selecting in one direction
// If next cell dragged into is in same row, select entire row,
// if next cell is in same column, select entire column
if (mStartSelectedCell && aMouseEvent->isShift)
{
result = GetCellIndexes(mStartSelectedCell, startRowIndex, startColIndex);
if (NS_FAILED(result)) return result;
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
if (NS_FAILED(result)) return result;
if (startRowIndex == curRowIndex ||
startColIndex == curColIndex)
{
// Force new selection block
mStartSelectedCell = nsnull;
mDomSelections[index]->ClearSelection();
mSelectingTableCellMode =
(startRowIndex == curRowIndex) ? TABLESELECTION_ROW : TABLESELECTION_COLUMN;
return SelectRowOrColumn(childContent, mSelectingTableCellMode);
}
}
// Reselect block of cells to new end location
return SelectBlockOfCells(childContent);
}
}
// Do nothing if dragging in table, but outside a cell
return NS_OK;
}
else
{
// Not dragging -- mouse event is down or up
if (mMouseDownState)
{
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Mouse down event\n");
#endif
// Clear cell we stored in mouse-down
mUnselectCellOnMouseUp = nsnull;
if (aTarget == TABLESELECTION_CELL)
{
PRBool isSelected = PR_FALSE;
// Check if we have other selected cells
nsCOMPtr<nsIDOMNode> previousCellNode;
GetFirstSelectedCellAndRange(getter_AddRefs(previousCellNode), nsnull);
if (previousCellNode)
{
// We have at least 1 other selected cell
// Check if new cell is already selected
nsIFrame *cellFrame = nsnull;
result = GetTracker()->GetPrimaryFrameFor(childContent, &cellFrame);
if (NS_FAILED(result)) return result;
if (!cellFrame) return NS_ERROR_NULL_POINTER;
result = cellFrame->GetSelected(&isSelected);
if (NS_FAILED(result)) return result;
}
else
{
// No cells selected -- remove non-cell selection
mDomSelections[index]->ClearSelection();
}
mSelectingTableCells = PR_TRUE; // Signal to start drag-cell-selection
mSelectingTableCellMode = aTarget;
// Set start for new drag-selection block (not appended)
mStartSelectedCell = childContent;
// The initial block end is same as the start
mEndSelectedCell = childContent;
if (isSelected)
{
// Remember this cell to (possibly) unselect it on mouseup
mUnselectCellOnMouseUp = childContent;
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Saving mUnselectCellOnMouseUp\n");
#endif
}
else
{
// Select an unselected cell
// but first remove existing selection if not in same table
nsCOMPtr<nsIContent> previousCellContent = do_QueryInterface(previousCellNode);
if (!IsInSameTable(previousCellContent, childContent, nsnull))
{
mDomSelections[index]->ClearSelection();
// Reset selection mode that is cleared in ClearSelection
mSelectingTableCellMode = aTarget;
}
nsCOMPtr<nsIDOMElement> cellElement = do_QueryInterface(childContent);
return SelectCellElement(cellElement);
}
return NS_OK;
}
else if (aTarget == TABLESELECTION_TABLE)
{
//TODO: We currently select entire table when clicked between cells,
// should we restrict to only around border?
// *** How do we get location data for cell and click?
mSelectingTableCells = PR_FALSE;
mStartSelectedCell = nsnull;
mEndSelectedCell = nsnull;
// Remove existing selection and select the table
mDomSelections[index]->ClearSelection();
return CreateAndAddRange(parentNode, aContentOffset);
}
else if (aTarget == TABLESELECTION_ROW || aTarget == TABLESELECTION_COLUMN)
{
// Start drag-selecting mode so multiple rows/cols can be selected
// Note: Currently, nsFrame::GetDataForTableSelection
// will never call us for row or column selection on mouse down
mSelectingTableCells = PR_TRUE;
// Force new selection block
mStartSelectedCell = nsnull;
mDomSelections[index]->ClearSelection();
// Always do this AFTER ClearSelection
mSelectingTableCellMode = aTarget;
return SelectRowOrColumn(childContent, aTarget);
}
}
else
{
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Mouse UP event\n");
#endif
// First check if we are extending a block selection
PRInt32 rangeCount;
result = mDomSelections[index]->GetRangeCount(&rangeCount);
if (NS_FAILED(result)) return result;
if (rangeCount > 0 && aMouseEvent->isShift &&
mAppendStartSelectedCell && mAppendStartSelectedCell != childContent)
{
// If Shift is down as well, append a block selection
return SelectBlockOfCells(childContent);
}
// Unselect a cell only if it wasn't
// just selected on mousedown
if( childContent == mUnselectCellOnMouseUp)
{
// Scan ranges to find the cell to unselect (the selection range to remove)
nsCOMPtr<nsIDOMNode> previousCellParent;
nsCOMPtr<nsIDOMRange> range;
PRInt32 offset;
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Unselecting mUnselectCellOnMouseUp; rangeCount=%d\n", rangeCount);
#endif
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<nsIDOMNode> parent;
result = range->GetStartContainer(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<nsIContent> parentContent = do_QueryInterface(parent);
nsCOMPtr<nsIContent> 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_SELECTION
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;
mSelectingTableCellMode = 0;
//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(childNode, 0);
}
#ifdef DEBUG_TABLE_SELECTION
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);
}
}
mUnselectCellOnMouseUp = nsnull;
// Should we just return here?
// (we failed to unselect the cell)
}
// We have mouse up in a cell that was just selected on mouse down,
// (and no drag or shift-extend action intervened)
// Use it as the start of a block that
// we may append by using Shift+click in another cell
mAppendStartSelectedCell = childContent;
#ifdef DEBUG_TABLE_SELECTION
printf("HandleTableSelection: Setting mAppendStartSelectedCell for append block\n");
#endif
}
}
return result;
}
nsresult
nsSelection::SelectBlockOfCells(nsIContent *aEndCell)
{
if (!aEndCell) return NS_ERROR_NULL_POINTER;
mEndSelectedCell = aEndCell;
nsCOMPtr<nsIContent> startCell;
nsresult result = NS_OK;
if (mAppendStartSelectedCell)
{
// We are appending a new block
#ifdef DEBUG_TABLE_SELECTION
printf("SelectBlockOfCells -- using mAppendStartSelectedCell\n");
#endif
startCell = mAppendStartSelectedCell;
}
else if (mStartSelectedCell)
{
startCell = mStartSelectedCell;
#ifdef DEBUG_TABLE_SELECTION
printf("SelectBlockOfCells -- using mStartSelectedCell\n");
#endif
}
if (!startCell)
{
#ifdef DEBUG_TABLE_SELECTION
printf("SelectBlockOfCells -- NO START CELL!\n");
#endif
return NS_OK;
}
// If new end cell is in a different table, do nothing
nsCOMPtr<nsIContent> table;
if (!IsInSameTable(startCell, aEndCell, getter_AddRefs(table)))
return NS_OK;
// Get starting and ending cells' location in the cellmap
PRInt32 startRowIndex, startColIndex, endRowIndex, endColIndex;
result = GetCellIndexes(startCell, startRowIndex, startColIndex);
if(NS_FAILED(result)) return result;
result = GetCellIndexes(aEndCell, endRowIndex, endColIndex);
if(NS_FAILED(result)) return result;
// Get TableLayout interface to access cell data based on cellmap location
// frames are not ref counted, so don't use an nsCOMPtr
nsITableLayout *tableLayoutObject = GetTableLayout(table);
if (!tableLayoutObject) return NS_ERROR_FAILURE;
PRInt32 curRowIndex, curColIndex;
if (!mAppendStartSelectedCell)
{
// Not appending - remove selected cells outside of new block limits
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
nsCOMPtr<nsIDOMNode> cellNode;
nsCOMPtr<nsIDOMRange> range;
result = GetFirstSelectedCellAndRange(getter_AddRefs(cellNode), getter_AddRefs(range));
if (NS_FAILED(result)) return result;
PRInt32 minRowIndex = PR_MIN(startRowIndex, endRowIndex);
PRInt32 maxRowIndex = PR_MAX(startRowIndex, endRowIndex);
PRInt32 minColIndex = PR_MIN(startColIndex, endColIndex);
PRInt32 maxColIndex = PR_MAX(startColIndex, endColIndex);
while (cellNode)
{
nsCOMPtr<nsIContent> childContent = do_QueryInterface(cellNode);
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
if (NS_FAILED(result)) return result;
#ifdef DEBUG_TABLE_SELECTION
if (!range)
printf("SelectBlockOfCells -- range is null\n");
#endif
if (range &&
(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<nsIDOMElement> cellElement;
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(cellElement),
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 && cellElement && row == curRowIndex && col == curColIndex)
{
result = SelectCellElement(cellElement);
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::SelectRowOrColumn(nsIContent *aCellContent, PRUint32 aTarget)
{
if (!aCellContent) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIContent> table;
nsresult result = GetParentTable(aCellContent, getter_AddRefs(table));
if (NS_FAILED(result)) return PR_FALSE;
if (!table) return NS_ERROR_NULL_POINTER;
// Get table and cell layout interfaces to access
// cell data based on cellmap location
// Frames are not ref counted, so don't use an nsCOMPtr
nsITableLayout *tableLayout = GetTableLayout(table);
if (!tableLayout) return NS_ERROR_FAILURE;
nsITableCellLayout *cellLayout = GetCellLayout(aCellContent);
if (!cellLayout) return NS_ERROR_FAILURE;
// Get location of target cell:
PRInt32 rowIndex, colIndex, curRowIndex, curColIndex;
result = cellLayout->GetCellIndexes(rowIndex, colIndex);
if (NS_FAILED(result)) return result;
// Be sure we start at proper beginning
// (This allows us to select row or col given ANY cell!)
if (aTarget == TABLESELECTION_ROW)
colIndex = 0;
if (aTarget == TABLESELECTION_COLUMN)
rowIndex = 0;
nsCOMPtr<nsIDOMElement> cellElement;
nsCOMPtr<nsIDOMElement> firstCell;
nsCOMPtr<nsIDOMElement> lastCell;
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
do {
// Loop through all cells in column or row to find first and last
result = tableLayout->GetCellDataAt(rowIndex, colIndex, *getter_AddRefs(cellElement),
curRowIndex, curColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(result)) return result;
if (cellElement)
{
NS_ASSERTION(actualRowSpan > 0 && actualColSpan> 0, "SelectRowOrColumn: Bad rowspan or colspan\n");
if (!firstCell)
firstCell = cellElement;
lastCell = cellElement;
// Move to next cell in cellmap, skipping spanned locations
if (aTarget == TABLESELECTION_ROW)
colIndex += actualColSpan;
else
rowIndex += actualRowSpan;
}
}
while (cellElement);
// Use SelectBlockOfCells:
// This will replace existing selection,
// but allow unselecting by dragging out of selected region
if (firstCell && lastCell)
{
if (!mStartSelectedCell)
{
// We are starting a new block, so select the first cell
result = SelectCellElement(firstCell);
if (NS_FAILED(result)) return result;
mStartSelectedCell = do_QueryInterface(firstCell);
}
nsCOMPtr<nsIContent> lastCellContent = do_QueryInterface(lastCell);
return SelectBlockOfCells(lastCellContent);
}
#if 0
// This is a more efficient strategy that appends row to current selection,
// but doesn't allow dragging OFF of an existing selection to unselect!
do {
// Loop through all cells in column or row
result = tableLayout->GetCellDataAt(rowIndex, colIndex, *getter_AddRefs(cellElement),
curRowIndex, curColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(result)) return result;
// We're done when cell is not found
if (!cellElement) break;
// Check spans else we infinitely loop
NS_ASSERTION(actualColSpan, "actualColSpan is 0!");
NS_ASSERTION(actualRowSpan, "actualRowSpan is 0!");
// Skip cells that are already selected or span from outside our region
if (!isSelected && rowIndex == curRowIndex && colIndex == curColIndex)
{
result = SelectCellElement(cellElement);
if (NS_FAILED(result)) return result;
}
// Move to next row or column in cellmap, skipping spanned locations
if (aTarget == TABLESELECTION_ROW)
colIndex += actualColSpan;
else
rowIndex += actualRowSpan;
}
while (cellElement);
#endif
return NS_OK;
}
nsresult
nsSelection::GetFirstCellNodeInRange(nsIDOMRange *aRange, nsIDOMNode **aCellNode)
{
if (!aRange || !aCellNode) return NS_ERROR_NULL_POINTER;
*aCellNode = nsnull;
nsCOMPtr<nsIDOMNode> startParent;
nsresult result = aRange->GetStartContainer(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<nsIContent> parentContent = do_QueryInterface(startParent);
nsCOMPtr<nsIContent> 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<nsIDOMNode> childNode = do_QueryInterface(childContent);
if (childNode)
{
*aCellNode = childNode;
NS_ADDREF(*aCellNode);
}
return NS_OK;
}
nsresult
nsSelection::GetFirstSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
*aCell = nsnull;
// aRange is optional
if (aRange)
*aRange = nsnull;
nsCOMPtr<nsIDOMRange> 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<nsIDOMNode> cellNode;
result = GetFirstCellNodeInRange(firstRange, getter_AddRefs(cellNode));
if (NS_FAILED(result)) return result;
if (!cellNode) return NS_OK;
*aCell = cellNode;
NS_ADDREF(*aCell);
if (aRange)
{
*aRange = firstRange;
NS_ADDREF(*aRange);
}
// Setup for next cell
mSelectedCellIndex = 1;
return NS_OK;
}
nsresult
nsSelection::GetNextSelectedCellAndRange(nsIDOMNode **aCell, nsIDOMRange **aRange)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
*aCell = nsnull;
// aRange is optional
if (aRange)
*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<nsIDOMRange> range;
result = mDomSelections[index]->GetRangeAt(mSelectedCellIndex, getter_AddRefs(range));
if (NS_FAILED(result)) return result;
if (!range) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> 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);
if (aRange)
{
*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;
nsITableCellLayout *cellLayoutObject = GetCellLayout(aCell);
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<nsIContent> tableNode1;
nsCOMPtr<nsIContent> 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<nsIContent> 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<nsIContent> temp;
result = parent->GetParent(*getter_AddRefs(temp));
parent = temp;
}
return result;
}
nsresult
nsSelection::SelectCellElement(nsIDOMElement *aCellElement)
{
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(aCellElement);
nsCOMPtr<nsIDOMNode> parent;
nsresult result = cellNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(result)) return result;
if (!parent) return NS_ERROR_FAILURE;
nsCOMPtr<nsIContent> parentContent = do_QueryInterface(parent);
nsCOMPtr<nsIContent> cellContent = do_QueryInterface(aCellElement);
// Get child offset
PRInt32 offset;
result = parentContent->IndexOf(cellContent, offset);
if (NS_FAILED(result)) return result;
return CreateAndAddRange(parent, offset);
}
nsresult
nsSelection::CreateAndAddRange(nsIDOMNode *aParentNode, PRInt32 aOffset)
{
if (!aParentNode) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMRange> 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::AdjustOffsetsFromStyle(nsIFrame *aFrame, PRBool *changeSelection,
nsIContent** outContent, PRInt32* outStartOffset, PRInt32* outEndOffset)
{
*changeSelection = PR_FALSE;
*outContent = nsnull;
nsresult rv;
nsIFrame* selectAllFrame;
rv = FrameOrParentHasSpecialSelectionStyle(aFrame, NS_STYLE_USER_SELECT_ALL, &selectAllFrame);
if (NS_FAILED(rv)) return rv;
if (!selectAllFrame)
return NS_OK;
nsCOMPtr<nsIContent> selectAllContent;
selectAllFrame->GetContent(getter_AddRefs(selectAllContent));
if (selectAllContent)
{
nsCOMPtr<nsIContent> parentContent;
rv = selectAllContent->GetParent(*getter_AddRefs(parentContent));
if (parentContent)
{
PRInt32 startOffset;
rv = parentContent->IndexOf(selectAllContent, startOffset);
if (NS_FAILED(rv)) return rv;
if (startOffset < 0)
{
// hrmm, this is probably anonymous content. Let's go up another level
// do we need to do this if we get the right frameSelection to start with?
nsCOMPtr<nsIContent> superParent;
parentContent->GetParent(*getter_AddRefs(superParent));
if (superParent)
{
PRInt32 superStartOffset;
rv = superParent->IndexOf(parentContent, superStartOffset);
if (NS_FAILED(rv)) return rv;
if (superStartOffset < 0)
return NS_ERROR_FAILURE; // give up
parentContent = superParent;
startOffset = superStartOffset;
}
}
NS_IF_ADDREF(*outContent = parentContent);
*outStartOffset = startOffset;
*outEndOffset = startOffset + 1;
*changeSelection = PR_TRUE;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsSelection::SetHint(HINT aHintRight)
{
mHint = aHintRight;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::GetHint(HINT *aHintRight)
{
*aHintRight = mHint;
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<nsIDOMRange> 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;
}
NS_IMETHODIMP
nsSelection::SetDelayCaretOverExistingSelection(PRBool aDelay)
{
mDelayCaretOverExistingSelection = aDelay;
if (! aDelay)
mDelayedMouseEventValid = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::GetDelayCaretOverExistingSelection(PRBool *aDelay)
{
if (!aDelay)
return NS_ERROR_NULL_POINTER;
*aDelay = mDelayCaretOverExistingSelection;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::SetDelayedCaretData(nsMouseEvent *aMouseEvent)
{
if (aMouseEvent)
{
mDelayedMouseEventValid = PR_TRUE;
mDelayedMouseEvent = *aMouseEvent;
// XXX: Hmmm, should we AddRef mDelayedMouseEvent->widget?
// Doing so might introduce a leak if things in the app
// are not released in the correct order though, so for now
// don't do anything.
}
else
mDelayedMouseEventValid = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsSelection::GetDelayedCaretData(nsMouseEvent **aMouseEvent)
{
if (!aMouseEvent)
return NS_ERROR_NULL_POINTER;
if (mDelayedMouseEventValid)
*aMouseEvent = &mDelayedMouseEvent;
else
*aMouseEvent = 0;
return NS_OK;
}
// Frame needs to get the limiting content node for parent node searches
NS_IMETHODIMP
nsSelection::GetLimiter(nsIContent **aLimiterContent)
{
if (!aLimiterContent) return NS_ERROR_NULL_POINTER;
*aLimiterContent = mLimiter;
NS_IF_ADDREF(*aLimiterContent);
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()
{
mFrameSelection = nsnull;
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)
{
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; j<cnt; j++)
{
mRangeArray->RemoveElementAt(0);
}
setAnchorFocusRange(-1);
if (mAutoScrollTimer) {
mAutoScrollTimer->Stop();
NS_RELEASE(mAutoScrollTimer);
}
}
NS_IMPL_ADDREF(nsDOMSelection)
NS_IMPL_RELEASE(nsDOMSelection)
NS_IMPL_QUERY_INTERFACE4(nsDOMSelection, nsIDOMSelection, nsIScriptObjectOwner, nsISupportsWeakReference, nsIIndependentSelection)
NS_IMETHODIMP
nsDOMSelection::SetPresShell(nsIPresShell *aPresShell)
{
mPresShellWeak = getter_AddRefs(NS_GetWeakReference(aPresShell));
return NS_OK;
}
NS_IMETHODIMP
nsDOMSelection::GetAnchorNode(nsIDOMNode** aAnchorNode)
{
if (!aAnchorNode)
return NS_ERROR_NULL_POINTER;
*aAnchorNode = nsnull;
if(!mAnchorFocusRange)
return NS_OK;
nsresult result;
if (GetDirection() == eDirNext){
result = mAnchorFocusRange->GetStartContainer(aAnchorNode);
}
else{
result = mAnchorFocusRange->GetEndContainer(aAnchorNode);
}
return result;
}
NS_IMETHODIMP
nsDOMSelection::GetAnchorOffset(PRInt32* aAnchorOffset)
{
if (!aAnchorOffset)
return NS_ERROR_NULL_POINTER;
*aAnchorOffset = nsnull;
if(!mAnchorFocusRange)
return NS_OK;
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_IMETHODIMP
nsDOMSelection::GetFocusNode(nsIDOMNode** aFocusNode)
{
if (!aFocusNode)
return NS_ERROR_NULL_POINTER;
*aFocusNode = nsnull;
if(!mAnchorFocusRange)
return NS_OK;
nsresult result;
if (GetDirection() == eDirNext){
result = mAnchorFocusRange->GetEndContainer(aFocusNode);
}
else{
result = mAnchorFocusRange->GetStartContainer(aFocusNode);
}
return result;
}
NS_IMETHODIMP nsDOMSelection::GetFocusOffset(PRInt32* aFocusOffset)
{
if (!aFocusOffset)
return NS_ERROR_NULL_POINTER;
*aFocusOffset = nsnull;
if(!mAnchorFocusRange)
return NS_OK;
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<nsIDOMRange>();
}
else{
nsCOMPtr<nsISupports> indexIsupports = dont_AddRef(mRangeArray->ElementAt(indx));
mAnchorFocusRange = do_QueryInterface(indexIsupports);
}
}
nsIDOMNode*
nsDOMSelection::FetchAnchorNode()
{ //where did the selection begin
nsCOMPtr<nsIDOMNode>returnval;
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
{
nsCOMPtr<nsIDOMNode>returnval;
PRInt32 unused;
GetOriginalAnchorPoint(getter_AddRefs(returnval), &unused);//this queries
return returnval;
}
PRInt32
nsDOMSelection::FetchOriginalAnchorOffset()
{
nsCOMPtr<nsIDOMNode>unused;
PRInt32 returnval;
if (NS_SUCCEEDED(GetOriginalAnchorPoint(getter_AddRefs(unused), &returnval)))//this queries
return returnval;
return NS_OK;
}
nsIDOMNode*
nsDOMSelection::FetchFocusNode()
{ //where is the carret
nsCOMPtr<nsIDOMNode>returnval;
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<nsIDOMNode> returnval;
aRange->GetStartContainer(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<nsIDOMNode> returnval;
aRange->GetEndContainer(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<nsISupports> 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<nsISupports> indexIsupports = dont_AddRef(mRangeArray->ElementAt(i));
nsCOMPtr<nsISupports> 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<nsISupports> isupportsindex = dont_AddRef(mRangeArray->ElementAt(0));
nsCOMPtr<nsIDOMRange> 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<nsIDOMNode> node = dont_QueryInterface(aNode);
if (!node)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIContent> 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<nsIContent> 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<nsIContent> content = do_QueryInterface(FetchAnchorNode());
if (content && mFrameSelection)
{
nsIFrameSelection::HINT hint;
mFrameSelection->GetHint(&hint);
return mFrameSelection->GetFrameForNodeOffset(content, FetchAnchorOffset(),hint,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<nsIContent> content = do_QueryInterface(FetchFocusNode());
if (content && mFrameSelection)
{
nsIFrameSelection::HINT hint;
mFrameSelection->GetHint(&hint);
return mFrameSelection->GetFrameForNodeOffset(content, FetchFocusOffset(),hint,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<nsIGeneratedContentIterator> 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<nsIContent> innercontent;
while (NS_ENUMERATOR_FALSE == aInnerIter->IsDone())
{
result = aInnerIter->CurrentNode(getter_AddRefs(innercontent));
if (NS_SUCCEEDED(result) && innercontent)
{
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<nsIContentIterator> iter;
nsCOMPtr<nsIContentIterator> 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<nsIPresShell> presShell;
result = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_FAILED(result) && presShell)
presShell = 0;
nsCOMPtr<nsIGeneratedContentIterator> 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<nsIContent> 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<nsIDOMNode> passedInNode;
passedInNode = do_QueryInterface(aContent);
if (!passedInNode)
return NS_ERROR_FAILURE;
SelectionDetails *details = nsnull;
SelectionDetails *newDetails = details;
for (i =0; i<cnt; i++){
nsCOMPtr<nsIDOMRange> range;
nsCOMPtr<nsISupports> isupportsindex = dont_AddRef(mRangeArray->ElementAt(i));
range = do_QueryInterface(isupportsindex);
if (range){
nsCOMPtr<nsIDOMNode> startNode;
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 startOffset;
PRInt32 endOffset;
range->GetStartContainer(getter_AddRefs(startNode));
range->GetStartOffset(&startOffset);
range->GetEndContainer(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){ //are we at the beginning?
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){//are we at the end?
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 { //then we MUST be completely selected! unless someone needs us to check to make sure with slowcheck
if (cnt > 1 || aSlowCheck){ //if more than 1 selection or we need to do slow check see if farther than start or less than end.
//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<nsISupports> isupp;
nsCOMPtr<nsIDOMRange> 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::GetViewAncestorOffset(nsIView *aView, nsIView *aAncestorView, nscoord *aXOffset, nscoord *aYOffset)
{
// Note: A NULL aAncestorView pointer means that the caller wants
// the view's global offset.
if (!aView || !aXOffset || !aYOffset)
return NS_ERROR_FAILURE;
*aXOffset = 0;
*aYOffset = 0;
nsIView *view = aView;
while (view && view != aAncestorView)
{
nscoord x = 0, y = 0;
nsresult result = view->GetPosition(&x, &y);
if (NS_FAILED(result))
return result;
*aXOffset += x;
*aYOffset += y;
result = view->GetParent(view);
if (NS_FAILED(result))
return result;
}
return NS_OK;
}
nsresult
nsDOMSelection::GetClosestScrollableView(nsIView *aView, nsIScrollableView **aScrollableView)
{
if (!aView || !aScrollableView)
return NS_ERROR_FAILURE;
*aScrollableView = 0;
while (!*aScrollableView && aView)
{
nsresult result = aView->QueryInterface(NS_GET_IID(nsIScrollableView), (void **)aScrollableView);
if (!*aScrollableView)
{
result = aView->GetParent(aView);
if (NS_FAILED(result))
return result;
}
}
return NS_OK;
}
nsresult
nsDOMSelection::ScrollPointIntoClipView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool *aDidScroll)
{
nsresult result;
if (!aPresContext || !aView || !aDidScroll)
return NS_ERROR_NULL_POINTER;
*aDidScroll = PR_FALSE;
//
// Get aView's scrollable view.
//
nsIScrollableView *scrollableView = 0;
result = GetClosestScrollableView(aView, &scrollableView);
if (NS_FAILED(result))
return result;
if (!scrollableView)
return NS_OK; // Nothing to do!
//
// Get the clip view.
//
const nsIView *cView = 0;
result = scrollableView->GetClipView(&cView);
if (NS_FAILED(result))
return result;
//
// Get the view that is being scrolled.
//
nsIView *scrolledView = 0;
result = scrollableView->GetScrolledView(scrolledView);
if (!cView)
return NS_ERROR_FAILURE;
//
// Now walk up aView's hierarchy, this time keeping track of
// the view offsets until you hit the scrolledView.
//
nsPoint viewOffset(0,0);
result = GetViewAncestorOffset(aView, scrolledView, &viewOffset.x, &viewOffset.y);
if (NS_FAILED(result))
return result;
//
// 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 = cView->GetBounds(bounds);
if (NS_FAILED(result))
return result;
result = scrollableView->GetScrollPosition(bounds.x,bounds.y);
if (NS_FAILED(result))
return 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)
{
// Get the PresShell
nsCOMPtr<nsIPresShell> presShell;
result = aPresContext->GetShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell,result);
// Get the ViewManager
nsCOMPtr<nsIViewManager> viewManager;
result = presShell->GetViewManager(getter_AddRefs(viewManager));
NS_ENSURE_TRUE(viewManager,result);
// Make sure latest bits are available before we scroll them.
viewManager->Composite();
// Now scroll the view!
result = scrollableView->ScrollTo(scrollX + dx, scrollY + dy, NS_VMREFRESH_NO_SYNC);
if (NS_FAILED(result))
return result;
nsPoint newPos;
result = scrollableView->GetScrollPosition(newPos.x, newPos.y);
if (NS_FAILED(result))
return result;
*aDidScroll = (bounds.x != newPos.x || bounds.y != newPos.y);
}
}
return result;
}
nsresult
nsDOMSelection::ScrollPointIntoView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool aScrollParentViews, PRBool *aDidScroll)
{
if (!aPresContext || !aView || !aDidScroll)
return NS_ERROR_NULL_POINTER;
nsresult result;
*aDidScroll = PR_FALSE;
//
// Calculate the global offset of the view.
//
nsPoint globalOffset;
result = GetViewAncestorOffset(aView, nsnull, &globalOffset.x, &globalOffset.y);
if (NS_FAILED(result))
return result;
//
// Convert aPoint into global coordinates so it is easier to map
// into other views.
//
nsPoint globalPoint = aPoint + globalOffset;
//
// Scroll the point into the visible rect of the closest
// scrollable view.
//
result = ScrollPointIntoClipView(aPresContext, aView, aPoint, aDidScroll);
if (NS_FAILED(result))
return result;
//
// Now scroll the parent scrollable views.
//
if (aScrollParentViews)
{
//
// Find aView's parent scrollable view.
//
nsIScrollableView *scrollableView = 0;
result = GetClosestScrollableView(aView, &scrollableView);
if (NS_FAILED(result))
return result;
if (scrollableView)
{
//
// Convert scrollableView to nsIView.
//
nsIView *scrolledView = 0;
nsIView *view = 0;
result = scrollableView->QueryInterface(NS_GET_IID(nsIView), (void**)&view);
if (view)
{
//
// Now get the scrollableView's parent, then search for it's
// closest scrollable view.
//
result = view->GetParent(view);
if (NS_FAILED(result))
return result;
while (view)
{
result = GetClosestScrollableView(view, &scrollableView);
if (NS_FAILED(result))
return result;
if (!scrollableView)
break;
scrolledView = 0;
result = scrollableView->GetScrolledView(scrolledView);
if (NS_FAILED(result))
return result;
//
// Map the global point into this scrolledView's coordinate space.
//
result = GetViewAncestorOffset(scrolledView, nsnull, &globalOffset.x, &globalOffset.y);
if (NS_FAILED(result))
return result;
nsPoint newPoint = globalPoint - globalOffset;
//
// Scroll the point into the visible rect of the scrolled view.
//
PRBool parentDidScroll = PR_FALSE;
result = ScrollPointIntoClipView(aPresContext, scrolledView, newPoint, &parentDidScroll);
if (NS_FAILED(result))
return result;
*aDidScroll = *aDidScroll || parentDidScroll;
//
// Now get the parent of this scrollable view so we
// can scroll the next parent view.
//
view = 0;
result = scrollableView->QueryInterface(NS_GET_IID(nsIView), (void**)&view);
if (NS_FAILED(result))
return result;
if (view)
view->GetParent(view);
}
}
}
}
return NS_OK;
}
nsresult
nsDOMSelection::DoAutoScrollView(nsIPresContext *aPresContext, nsIView *aView, nsPoint& aPoint, PRBool aScrollParentViews)
{
if (!aPresContext || !aView)
return NS_ERROR_NULL_POINTER;
nsresult result;
if (mAutoScrollTimer)
result = mAutoScrollTimer->Stop();
//
// Calculate the global offset of the view.
//
nsPoint globalOffset;
result = GetViewAncestorOffset(aView, nsnull, &globalOffset.x, &globalOffset.y);
if (NS_FAILED(result))
return result;
//
// Convert aPoint into global coordinates so we can get back
// to the same point after all the parent views have scrolled.
//
nsPoint globalPoint = aPoint + globalOffset;
//
// Now scroll aPoint into view.
//
PRBool didScroll = PR_FALSE;
result = ScrollPointIntoView(aPresContext, aView, aPoint, aScrollParentViews, &didScroll);
if (NS_FAILED(result))
return result;
//
// Start the AutoScroll timer if neccessary.
//
if (didScroll && mAutoScrollTimer)
{
//
// Map the globalPoint back into aView's coordinate system. We
// have to get the globalOffsets again because aView's
// window and it's parents may have changed their offsets.
//
result = GetViewAncestorOffset(aView, nsnull, &globalOffset.x, &globalOffset.y);
if (NS_FAILED(result))
return result;
nsPoint svPoint = globalPoint - globalOffset;
result = mAutoScrollTimer->Start(aPresContext, aView, svPoint);
}
return NS_OK;
}
nsresult
nsDOMSelection::DoAutoScroll(nsIPresContext *aPresContext, nsIFrame *aFrame, nsPoint& aPoint)
{
nsresult result;
if (!aPresContext || !aFrame)
return NS_ERROR_NULL_POINTER;
//
// Find the closest view to the frame!
//
nsIView *closestView = 0;
result = aFrame->GetView(aPresContext, &closestView);
if (NS_FAILED(result))
return result;
if (!closestView)
{
//
// aFrame doesn't contain a view, so walk aFrame's parent hierarchy
// till you find a parent with a view.
//
nsIFrame *parentFrame = aFrame;
result = aFrame->GetParent(&parentFrame);
if (NS_FAILED(result))
return result;
if (!parentFrame)
return NS_ERROR_FAILURE;
while (!closestView && parentFrame)
{
result = parentFrame->GetView(aPresContext, &closestView);
if (NS_FAILED(result))
return result;
if (!closestView)
result = parentFrame->GetParent(&parentFrame);
}
if (!closestView)
return NS_ERROR_FAILURE;
}
return DoAutoScrollView(aPresContext, closestView, aPoint, PR_TRUE);
}
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<nsIPresContext> presContext;
GetPresContext(getter_AddRefs(presContext));
nsresult result = Clear(presContext);
if (NS_FAILED(result))
return result;
// Turn off signal for table selection
mFrameSelection->ClearTableCellSelection();
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);
//TABLE CELL CHECK
if(mFrameSelection)// don't assume we have a FrameSelection
{
nsCOMPtr<nsIDOMNode> startNode;
result = aRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode> endNode;
result = aRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_SUCCEEDED(result))
{
if (startNode == endNode)
{//check for table row
nsCOMPtr<nsIContent> content(do_QueryInterface(startNode));
if (content)
{
nsIAtom *atom;
if (NS_SUCCEEDED(content->GetTag(atom)) && atom == nsSelection::sRowAtom)
{//we are selecting a talble cell!
mFrameSelection->mSelectingTableCellMode = TABLESELECTION_CELL;
}
else //check to see if we are selecting a table
{
PRInt32 startOffset;
PRInt32 endOffset;
result = aRange->GetEndOffset(&endOffset);
result &= aRange->GetStartOffset(&startOffset);
if (NS_SUCCEEDED(result))
{
if ((endOffset - startOffset) == 1) //1 child selected
{
nsCOMPtr<nsIContent> childAt;
if (NS_SUCCEEDED(content->ChildAt(startOffset, *getter_AddRefs(childAt))))
{
if ( (childAt) &&
(NS_SUCCEEDED(childAt->GetTag(atom)) && atom == nsSelection::sTableAtom) )
{
mFrameSelection->mSelectingTableCellMode = TABLESELECTION_TABLE;
}
}
}
}
}
}
}
}
}
}
nsCOMPtr<nsIPresContext> 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<nsIPresContext> 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<nsIPresContext> presContext;
GetPresContext(getter_AddRefs(presContext));
Clear(presContext);
// Turn off signal for table selection
if (mFrameSelection)
mFrameSelection->ClearTableCellSelection();
nsCOMPtr<nsIDOMRange> 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)
{
nsCOMPtr<nsIContent>content;
content = do_QueryInterface(aParentNode);
if (!content)
return NS_ERROR_FAILURE;
nsIAtom *tag;
content->GetTag(tag);
if (tag)
{
nsAutoString 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<nsIDOMRange> firstRange = do_QueryInterface(element);
if (!firstRange)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> parent;
rv = firstRange->GetStartContainer(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<nsIDOMRange> lastRange = do_QueryInterface(element);
if (!lastRange)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> parent;
rv = lastRange->GetEndContainer(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<nsISupports> nsisup(dont_AddRef(mRangeArray->ElementAt(0)));
nsCOMPtr<nsIDOMRange> range;
nsresult rv;
range = do_QueryInterface(nsisup,&rv);
if (NS_FAILED(rv))
{
return rv;
}
return (range->GetCollapsed(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<nsIDOMRange> 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<nsIDOMNode> startNode;
nsCOMPtr<nsIDOMNode> 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<nsIAtom> atom;
atom = GetTag(endNode);
if (atom.get() == nsSelection::sTbodyAtom)
return NS_ERROR_FAILURE; //cannot select INTO row node ony cells
//get common parent
nsCOMPtr<nsIDOMNode> parent;
nsCOMPtr<nsIDOMRange> 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<nsIDOMNode> tempNode;
nsCOMPtr<nsIDOMNode> 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<nsIDOMRange> 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->GetStartContainer(aNode);
if (NS_FAILED(result))
return result;
result = mOriginalAnchorRange->GetStartOffset(aOffset);
return result;
}
/*
utility function
*/
NS_IMETHODIMP
nsDOMSelection::CopyRangeToAnchorFocus(nsIDOMRange *aRange)
{
nsCOMPtr<nsIDOMNode> startNode;
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 startOffset;
PRInt32 endOffset;
aRange->GetStartContainer(getter_AddRefs(startNode));
aRange->GetEndContainer(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<nsIDOMRange> difRange;
nsresult res;
NS_NewRange(getter_AddRefs(difRange));
nsCOMPtr<nsIDOMRange> range;
if (FetchFocusNode() == aParentNode && FetchFocusOffset() == aOffset)
return NS_ERROR_FAILURE;//same node nothing to do!
res = mAnchorFocusRange->CloneRange(getter_AddRefs(range));
//range = mAnchorFocusRange;
nsCOMPtr<nsIDOMNode> startNode;
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 startOffset;
PRInt32 endOffset;
range->GetStartContainer(getter_AddRefs(startNode));
range->GetEndContainer(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<nsIPresContext> 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)
{
nsCOMPtr<nsIContent>content;
content = do_QueryInterface(aParentNode);
nsIAtom *tag;
content->GetTag(tag);
if (tag)
{
nsAutoString 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());
}
static inline nsresult GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
{
NS_ASSERTION((aChild && aParent), "bad args");
if (!aChild || !aParent) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
nsCOMPtr<nsIContent> cChild = do_QueryInterface(aChild);
if (!cChild || !content) return NS_ERROR_NULL_POINTER;
nsresult res = content->IndexOf(cChild, aOffset);
return res;
}
NS_IMETHODIMP
nsDOMSelection::SelectAllChildren(nsIDOMNode* aParentNode)
{
NS_ENSURE_ARG_POINTER(aParentNode);
if (mFrameSelection)
{
mFrameSelection->PostReason(nsIDOMSelectionListener::SELECTALL_REASON);
}
nsresult result = Collapse(aParentNode, 0);
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode>lastChild;
result = aParentNode->GetLastChild(getter_AddRefs(lastChild));
if ((NS_SUCCEEDED(result)) && lastChild)
{
PRInt32 numBodyChildren=0;
GetChildOffset(lastChild, aParentNode, numBodyChildren);
if (mFrameSelection)
{
mFrameSelection->PostReason(nsIDOMSelectionListener::SELECTALL_REASON);
}
result = Extend(aParentNode, numBodyChildren+1);
}
}
return result;
}
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<nsISupports> element = dont_AddRef(mRangeArray->ElementAt(i));
nsCOMPtr<nsIDOMRange> range = do_QueryInterface(element);
if (!range)
return NS_ERROR_UNEXPECTED;
#if 0
// For bug 46554: since the only callers of ContainsNode() is the copy code from document,
// I'm altering the semantics of this routine. Now it will consider any node whose
// children are all selected to be selected itself. This is to help the user get
// what they expect when copying html.
nsCOMPtr<nsIDOMRange> newrange;
rv = range->CloneRange(getter_AddRefs(newrange));
if (NS_FAILED(rv)) return rv;
if (!newrange) return NS_ERROR_NULL_POINTER;
rv = PromoteRange(newrange);
if (NS_FAILED(rv)) return rv;
#endif
nsCOMPtr<nsIContent> 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::PromoteRange(nsIDOMRange *inRange)
{
if (!inRange) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode;
PRInt32 startOffset, endOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = inRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = inRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = inRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> opStartNode;
nsCOMPtr<nsIDOMNode> opEndNode;
PRInt32 opStartOffset, opEndOffset;
nsCOMPtr<nsIDOMRange> opRange;
res = GetPromotedPoint( kStart, startNode, startOffset, &opStartNode, &opStartOffset);
if (NS_FAILED(res)) return res;
res = GetPromotedPoint( kEnd, endNode, endOffset, &opEndNode, &opEndOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetStart(opStartNode, opStartOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetEnd(opEndNode, opEndOffset);
return res;
}
nsresult
nsDOMSelection::GetPromotedPoint(Endpoint aWhere, nsIDOMNode *aNode, PRInt32 aOffset,
nsCOMPtr<nsIDOMNode> *outNode, PRInt32 *outOffset)
{
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node = aNode;
nsCOMPtr<nsIDOMNode> parent = aNode;
PRInt32 offset = aOffset;
// defualt values
*outNode = node;
*outOffset = offset;
if (aWhere == kStart)
{
// some special casing for text nodes
if (IsTextNode(aNode))
{
// if not at beginning of text node, we are done
if (offset > 0) return NS_OK;
// else
res = GetNodeLocation(aNode, &parent, &offset);
if (NS_FAILED(res)) return res;
}
else
{
node = GetChildAt(parent,offset);
}
if (!node) node = parent;
// finding the real start for this point. look up the tree for as long as we are the
// first node in the container, and as long as we haven't hit the body node.
if (!IsBody(node))
{
res = GetNodeLocation(node, &parent, &offset);
if (NS_FAILED(res)) return res;
if (offset == -1) return NS_OK; // we hit generated content; STOP
while ((IsFirstNode(node)) && (!IsBody(parent)))
{
node = parent;
res = GetNodeLocation(node, &parent, &offset);
if (NS_FAILED(res)) return res;
if (offset == -1) // we hit generated content; STOP
{
// back up a bit
parent = node;
offset = 0;
break;
}
}
*outNode = parent;
*outOffset = offset;
return res;
}
}
if (aWhere == kEnd)
{
// some special casing for text nodes
if (IsTextNode(aNode))
{
// if not at end of text node, we are done
PRUint32 len;
GetLengthOfDOMNode(aNode, len);
if (offset < (PRInt32)len) return NS_OK;
// else
res = GetNodeLocation(aNode, &parent, &offset);
if (NS_FAILED(res)) return res;
}
else
{
if (offset) offset--; // we want node _before_ offset
node = GetChildAt(parent,offset);
}
if (!node) node = parent;
// finding the real end for this point. look up the tree for as long as we are the
// last node in the container, and as long as we haven't hit the body node.
if (!IsBody(node))
{
res = GetNodeLocation(node, &parent, &offset);
if (NS_FAILED(res)) return res;
if (offset == -1) return NS_OK; // we hit generated content; STOP
while ((IsLastNode(node)) && (!IsBody(parent)))
{
node = parent;
res = GetNodeLocation(node, &parent, &offset);
if (NS_FAILED(res)) return res;
if (offset == -1) // we hit generated content; STOP
{
// back up a bit
parent = node;
offset = 0;
break;
}
}
*outNode = parent;
offset++; // add one since this in an endpoint - want to be AFTER node.
*outOffset = offset;
return res;
}
}
return res;
}
nsCOMPtr<nsIDOMNode>
nsDOMSelection::GetChildAt(nsIDOMNode *aParent, PRInt32 aOffset)
{
nsCOMPtr<nsIDOMNode> resultNode;
if (!aParent)
return resultNode;
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
nsCOMPtr<nsIContent> cChild;
NS_PRECONDITION(content, "null content in nsDOMSelection::GetChildAt");
if (NS_FAILED(content->ChildAt(aOffset, *getter_AddRefs(cChild))))
return resultNode;
resultNode = do_QueryInterface(cChild);
return resultNode;
}
PRBool
nsDOMSelection::IsTextNode(nsIDOMNode *aNode)
{
if (!aNode) return PR_FALSE;
PRUint16 nodeType;
aNode->GetNodeType(&nodeType);
if (nodeType == nsIDOMNode::TEXT_NODE)
return PR_TRUE;
return PR_FALSE;
}
PRBool
nsDOMSelection::IsBody(nsIDOMNode* aNode)
{
if (aNode)
{
nsAutoString tag;
nsCOMPtr<nsIAtom> atom;
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (content)
content->GetTag(*getter_AddRefs(atom));
if (atom)
{
atom->ToString(tag);
tag.ToLowerCase();
if (tag.EqualsWithConversion("body"))
{
return PR_TRUE;
}
}
}
return PR_FALSE;
}
nsresult
nsDOMSelection::GetNodeLocation(nsIDOMNode *inChild, nsCOMPtr<nsIDOMNode> *outParent, PRInt32 *outOffset)
{
NS_ASSERTION((inChild && outParent && outOffset), "bad args");
nsresult result = NS_ERROR_NULL_POINTER;
if (inChild && outParent && outOffset)
{
result = inChild->GetParentNode(getter_AddRefs(*outParent));
if ((NS_SUCCEEDED(result)) && (*outParent))
{
nsCOMPtr<nsIContent> content = do_QueryInterface(*outParent);
nsCOMPtr<nsIContent> cChild = do_QueryInterface(inChild);
if (!cChild || !content) return NS_ERROR_NULL_POINTER;
result = content->IndexOf(cChild, *outOffset);
}
}
return result;
}
PRBool
nsDOMSelection::IsFirstNode(nsIDOMNode *aNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset, j=0;
nsresult res = GetNodeLocation(aNode, &parent, &offset);
if (NS_FAILED(res))
{
NS_NOTREACHED("failure in IsFirstNode");
return PR_FALSE;
}
if (offset == 0) // easy case, we are first dom child
return PR_TRUE;
if (!parent)
return PR_TRUE;
// need to check if any nodes before us are really visible.
// Mike wrote something for me along these lines in nsSelectionController,
// but I don't think it's ready for use yet - revisit.
// HACK: for now, simply consider all whitespace text nodes to be
// invisible formatting nodes.
nsCOMPtr<nsIDOMNodeList> childList;
nsCOMPtr<nsIDOMNode> child;
res = parent->GetChildNodes(getter_AddRefs(childList));
if (NS_FAILED(res) || !childList)
{
NS_NOTREACHED("failure in IsFirstNode");
return PR_TRUE;
}
while (j < offset)
{
childList->Item(j, getter_AddRefs(child));
if (IsEmptyTextContent(child))
return PR_FALSE;
j++;
}
return PR_TRUE;
}
PRBool
nsDOMSelection::IsLastNode(nsIDOMNode *aNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset,j;
PRUint32 numChildren;
nsresult res = GetNodeLocation(aNode, &parent, &offset);
if (NS_FAILED(res))
{
NS_NOTREACHED("failure in IsLastNode");
return PR_FALSE;
}
GetLengthOfDOMNode(parent, numChildren);
if (offset+1 == (PRInt32)numChildren) // easy case, we are last dom child
return PR_TRUE;
if (!parent)
return PR_TRUE;
// need to check if any nodes after us are really visible.
// Mike wrote something for me along these lines in nsSelectionController,
// but I don't think it's ready for use yet - revisit.
// HACK: for now, simply consider all whitespace text nodes to be
// invisible formatting nodes.
j = offset+1;
nsCOMPtr<nsIDOMNodeList>childList;
nsCOMPtr<nsIDOMNode> child;
res = parent->GetChildNodes(getter_AddRefs(childList));
if (NS_FAILED(res) || !childList)
{
NS_NOTREACHED("failure in IsLastNode");
return PR_TRUE;
}
while (j < (PRInt32)numChildren)
{
childList->Item(j, getter_AddRefs(child));
if (IsEmptyTextContent(child))
return PR_FALSE;
j++;
}
return PR_TRUE;
}
nsresult
nsDOMSelection::GetLengthOfDOMNode(nsIDOMNode *aNode, PRUint32 &aCount)
{
aCount = 0;
if (!aNode) { return NS_ERROR_NULL_POINTER; }
nsresult result=NS_OK;
nsCOMPtr<nsIDOMCharacterData>nodeAsChar;
nodeAsChar = do_QueryInterface(aNode);
if (nodeAsChar) {
nodeAsChar->GetLength(&aCount);
}
else
{
PRBool hasChildNodes;
aNode->HasChildNodes(&hasChildNodes);
if (PR_TRUE==hasChildNodes)
{
nsCOMPtr<nsIDOMNodeList>nodeList;
result = aNode->GetChildNodes(getter_AddRefs(nodeList));
if (NS_SUCCEEDED(result) && nodeList) {
nodeList->GetLength(&aCount);
}
}
}
return result;
}
PRBool
nsDOMSelection::IsEmptyTextContent(nsIDOMNode* aNode)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aNode));
if (tc) {
tc->IsOnlyWhitespace(&result);
}
return result;
}
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)
{
if (mPresShellWeak)
{
nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShellWeak);
if (presShell)
NS_ADDREF(*aPresShell = presShell);
return NS_OK;
}
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<nsIPresContext> presContext;
rv = tracker->GetPresContext(getter_AddRefs(presContext));
if (NS_FAILED(rv))
return rv;
if (!presContext)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIPresShell> shell;
rv = presContext->GetShell(getter_AddRefs(shell));
mPresShellWeak = getter_AddRefs(NS_GetWeakReference(shell)); // the presshell owns us, so no addref
if (mPresShellWeak)
NS_ADDREF(*aPresShell = shell);
return rv;
}
nsresult
nsDOMSelection::GetRootScrollableView(nsIScrollableView **aScrollableView)
{
//
// NOTE: This method returns a NON-AddRef'd pointer
// to the scrollable view!
//
NS_ENSURE_ARG_POINTER(aScrollableView);
if (!mFrameSelection)
return NS_ERROR_FAILURE;//nothing to do
nsresult rv = NS_OK;
nsIScrollableView *scrollView = mFrameSelection->GetScrollView();
if (!scrollView)
{
nsCOMPtr<nsIPresShell> presShell;
rv = GetPresShell(getter_AddRefs(presShell));
if (NS_FAILED(rv))
return rv;
if (!presShell)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIViewManager> 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);
}
else //SCROLLVIEW_FROM_FRAME
{
*aScrollableView = scrollView;
}
return NS_OK;
}
nsresult
nsDOMSelection::GetFrameToScrolledViewOffsets(nsIScrollableView *aScrollableView, nsIFrame *aFrame, nscoord *aX, nscoord *aY)
{
nsresult rv = NS_OK;
if (!mFrameSelection)
return NS_ERROR_FAILURE;//nothing to do
if (!aScrollableView || !aFrame || !aX || !aY) {
return NS_ERROR_NULL_POINTER;
}
*aX = 0;
*aY = 0;
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
aScrollableView->GetScrolledView(scrolledView);
nsIFocusTracker *tracker = mFrameSelection->GetTracker();
if (!tracker)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIPresContext> 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<nsIPresContext> presContext;
rv = tracker->GetPresContext(getter_AddRefs(presContext));
if (NS_FAILED(rv))
return rv;
if (!presContext)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDeviceContext> 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<nsIWidget> 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<nsIRenderingContext> 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::GetSelectionRegionRectAndScrollableView(SelectionRegion aRegion, nsRect *aRect, nsIScrollableView **aScrollableView)
{
nsresult result = NS_OK;
if (!mFrameSelection)
return NS_ERROR_FAILURE;//nothing to do
if (!aRect || !aScrollableView)
return NS_ERROR_NULL_POINTER;
// Init aRect:
aRect->x = 0;
aRect->y = 0;
aRect->width = 0;
aRect->height = 0;
*aScrollableView = 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<nsIContent> content = do_QueryInterface(node);
PRInt32 frameOffset = 0;
if (content)
{
nsIFrameSelection::HINT hint;
mFrameSelection->GetHint(&hint);
result = mFrameSelection->GetFrameForNodeOffset(content, nodeOffset, hint, &frame, &frameOffset);
}
else
result = NS_ERROR_FAILURE;
if(NS_FAILED(result))
return result;
if (!frame)
return NS_ERROR_NULL_POINTER;
//
// Get the frame's scrollable view.
//
nsCOMPtr<nsIPresContext> presContext;
result = GetPresContext(getter_AddRefs(presContext));
if (NS_FAILED(result))
return result;
if (!presContext)
return NS_ERROR_FAILURE;
nsIView *view = 0;
nsIFrame *parentWithView = 0;
result = frame->GetParentWithView(presContext, &parentWithView);
if (NS_FAILED(result))
return result;
if (!parentWithView)
return NS_ERROR_FAILURE;
result = parentWithView->GetView(presContext, &view);
if (NS_FAILED(result))
return result;
if (!view)
return NS_ERROR_FAILURE;
result = GetClosestScrollableView(view, aScrollableView);
if (NS_FAILED(result))
return result;
if (!*aScrollableView)
return NS_OK;
//
// Figure out what node type we have, then get the
// appropriate rect for it's nodeOffset.
//
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 = GetFrameToScrolledViewOffsets(*aScrollableView, 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!
//
const nsIView* clipView = 0;
nsRect clipRect;
result = (*aScrollableView)->GetScrollPosition(clipRect.x, clipRect.y);
if (NS_FAILED(result))
return result;
result = (*aScrollableView)->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 = GetFrameToScrolledViewOffsets(*aScrollableView, frame, &aRect->x, &aRect->y);
}
return result;
}
nsresult
nsDOMSelection::ScrollRectIntoView(nsIScrollableView *aScrollableView,
nsRect& aRect,
PRIntn aVPercent,
PRIntn aHPercent,
PRBool aScrollParentViews)
{
nsresult rv = NS_OK;
if (!mFrameSelection)
return NS_OK;//nothing to do
if (!aScrollableView)
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;
aScrollableView->GetScrollPosition(visibleRect.x, visibleRect.y);
aScrollableView->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;
}
aScrollableView->ScrollTo(scrollOffsetX, scrollOffsetY, NS_VMREFRESH_IMMEDIATE);
if (aScrollParentViews)
{
//
// Get aScrollableView's scrolled view.
//
nsIView *scrolledView = 0;
rv = aScrollableView->GetScrolledView(scrolledView);
if (NS_FAILED(rv))
return rv;
if (!scrolledView)
return NS_ERROR_FAILURE;
//
// Check if aScrollableRect has a parent scrollable view!
//
nsIView *view = 0;
rv = aScrollableView->QueryInterface(NS_GET_IID(nsIView), (void **)&view);
if (NS_FAILED(rv))
return rv;
if (!view)
return NS_ERROR_FAILURE;
rv = view->GetParent(view);
if (NS_FAILED(rv))
return rv;
if (view)
{
nsIScrollableView *parentSV = 0;
rv = GetClosestScrollableView(view, &parentSV);
if (NS_FAILED(rv))
return rv;
if (parentSV)
{
//
// We have a parent scrollable view, so now map aRect
// into it's scrolled view's coordinate space.
//
nsRect newRect;
rv = parentSV->GetScrolledView(view);
if (NS_FAILED(rv))
return rv;
if (!view)
return NS_ERROR_FAILURE;
rv = GetViewAncestorOffset(scrolledView, view, &newRect.x, &newRect.y);
if (NS_FAILED(rv))
return rv;
newRect.x += aRect.x;
newRect.y += aRect.y;
newRect.width = aRect.width;
newRect.height = aRect.height;
//
// Now scroll the rect into the parent's view.
//
rv = ScrollRectIntoView(parentSV, newRect, aVPercent, aHPercent, aScrollParentViews);
}
}
}
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<nsIPresShell> presShell;
result = GetPresShell(getter_AddRefs(presShell));
if (NS_FAILED(result))
return result;
nsCOMPtr<nsICaret> caret;
presShell->GetCaret(getter_AddRefs(caret));
if (caret)
{
StCaretHider caretHider(caret); // stack-based class hides and shows the caret
//
// Scroll the selection region into view.
//
nsRect rect;
nsIScrollableView *scrollableView = 0;
result = GetSelectionRegionRectAndScrollableView(aRegion, &rect, &scrollableView);
if (NS_FAILED(result))
return result;
//
// It's ok if we don't have a scrollable view, just return early.
//
if (!scrollableView)
return NS_OK;
result = ScrollRectIntoView(scrollableView, rect, NS_PRESSHELL_SCROLL_ANYWHERE, NS_PRESSHELL_SCROLL_ANYWHERE, PR_TRUE);
}
return result;
}
NS_IMETHODIMP
nsDOMSelection::AddSelectionListener(nsIDOMSelectionListener* aNewListener)
{
if (!mSelectionListeners)
return NS_ERROR_FAILURE;
if (!aNewListener)
return NS_ERROR_NULL_POINTER;
nsresult result;
nsCOMPtr<nsISupports> 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<nsISupports> 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<nsIDOMDocument> domdoc;
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsIPresShell> 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);
}
short reason = mFrameSelection->PopReason();
for (PRUint32 i = 0; i < cnt;i++)
{
nsCOMPtr<nsISupports> isupports(dont_AddRef(mSelectionListeners->ElementAt(i)));
nsCOMPtr<nsIDOMSelectionListener> thisListener = do_QueryInterface(isupports);
if (thisListener)
thisListener->NotifySelectionChanged(domdoc,this, reason);
}
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