2263 lines
60 KiB
C++
2263 lines
60 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* nsIRangeList: the implementation of selection.
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*/
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#include "nsIFactory.h"
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#include "nsIEnumerator.h"
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#include "nsIDOMRange.h"
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#include "nsIFrameSelection.h"
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#include "nsIDOMSelection.h"
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#include "nsIDOMSelectionListener.h"
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#include "nsIFocusTracker.h"
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#include "nsIComponentManager.h"
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#include "nsLayoutCID.h"
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#include "nsIContent.h"
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#include "nsIDOMNode.h"
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#include "nsCOMPtr.h"
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#include "nsRange.h"
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#include "nsISupportsArray.h"
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#include "nsIDOMUIEvent.h"
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#include "nsIDOMSelectionListener.h"
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#include "nsIContentIterator.h"
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//included for desired x position;
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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#include "nsICaret.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIScriptGlobalObject.h"
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#define STATUS_CHECK_RETURN_MACRO() {if (!mTracker) return NS_ERROR_FAILURE;}
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static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
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static NS_DEFINE_IID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
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static NS_DEFINE_IID(kCSubtreeIteratorCID, NS_SUBTREEITERATOR_CID);
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//PROTOTYPES
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static void printRange(nsIDOMRange *aDomRange);
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static nsCOMPtr<nsIAtom> GetTag(nsIDOMNode *aNode);
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static nsresult ParentOffset(nsIDOMNode *aNode, nsIDOMNode **aParent, PRInt32 *aChildOffset);
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#if 0
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#define DEBUG_OUT_RANGE(x) printRange(x)
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#else
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#define DEBUG_OUT_RANGE(x)
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#endif //MOZ_DEBUG
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//#define DEBUG_SELECTION // uncomment for printf describing every collapse and extend.
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//#define DEBUG_NAVIGATION
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class nsRangeListIterator;
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class nsRangeList : public nsIFrameSelection,
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public nsIDOMSelection,
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public nsIScriptObjectOwner
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{
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public:
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/*interfaces for addref and release and queryinterface*/
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NS_DECL_ISUPPORTS
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/*BEGIN nsIFrameSelection interfaces*/
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NS_IMETHOD Init(nsIFocusTracker *aTracker);
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NS_IMETHOD ShutDown();
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NS_IMETHOD HandleTextEvent(nsGUIEvent *aGUIEvent);
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NS_IMETHOD HandleKeyEvent(nsGUIEvent *aGuiEvent);
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NS_IMETHOD TakeFocus(nsIContent *aNewFocus, PRUint32 aContentOffset, PRUint32 aContentEndOffset, PRBool aContinueSelection);
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NS_IMETHOD EnableFrameNotification(PRBool aEnable){mNotifyFrames = aEnable; return NS_OK;}
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NS_IMETHOD LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength,
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PRInt32 *aStart, PRInt32 *aEnd, PRBool *aDrawSelected , PRUint32 aFlag/*not used*/);
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NS_IMETHOD SetMouseDownState(PRBool aState);
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NS_IMETHOD GetMouseDownState(PRBool *aState);
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/*END nsIFrameSelection interfacse*/
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/*BEGIN nsIDOMSelection interface implementations*/
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NS_IMETHOD GetAnchorNode(nsIDOMNode** aAnchorNode);
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NS_IMETHOD GetAnchorOffset(PRInt32* aAnchorOffset);
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NS_IMETHOD GetFocusNode(nsIDOMNode** aFocusNode);
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NS_IMETHOD GetFocusOffset(PRInt32* aFocusOffset);
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NS_IMETHOD GetIsCollapsed(PRBool* aIsCollapsed);
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NS_IMETHOD GetRangeCount(PRInt32* aRangeCount);
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NS_IMETHOD GetRangeAt(PRInt32 aIndex, nsIDOMRange** aReturn);
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NS_IMETHOD ClearSelection();
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NS_IMETHOD Collapse(nsIDOMNode* aParentNode, PRInt32 aOffset);
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NS_IMETHOD Extend(nsIDOMNode* aParentNode, PRInt32 aOffset);
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NS_IMETHOD DeleteFromDocument();
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NS_IMETHOD AddRange(nsIDOMRange* aRange);
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NS_IMETHOD StartBatchChanges();
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NS_IMETHOD EndBatchChanges();
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NS_IMETHOD AddSelectionListener(nsIDOMSelectionListener* aNewListener);
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NS_IMETHOD RemoveSelectionListener(nsIDOMSelectionListener* aListenerToRemove);
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/*END nsIDOMSelection interface implementations*/
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/*BEGIN nsIScriptObjectOwner interface implementations*/
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NS_IMETHOD GetScriptObject(nsIScriptContext *aContext, void** aScriptObject);
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NS_IMETHOD SetScriptObject(void *aScriptObject);
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/*END nsIScriptObjectOwner interface implementations*/
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nsRangeList();
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virtual ~nsRangeList();
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private:
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nsresult AddItem(nsISupports *aRange);
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nsresult RemoveItem(nsISupports *aRange);
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nsresult Clear();
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NS_IMETHOD ScrollIntoView();
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friend class nsRangeListIterator;
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#ifdef DEBUG
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void printSelection(); // for debugging
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#endif /* DEBUG */
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void ResizeBuffer(PRUint32 aNewBufSize);
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// inline methods for convenience. Note, these don't addref
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nsIDOMNode* FetchAnchorNode(); //where did the selection begin
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PRInt32 FetchAnchorOffset();
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nsIDOMNode* FetchOriginalAnchorNode(); //where did the ORIGINAL selection begin
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PRInt32 FetchOriginalAnchorOffset();
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nsIDOMNode* FetchFocusNode(); //where is the carret
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PRInt32 FetchFocusOffset();
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nsIDOMNode* FetchStartParent(nsIDOMRange *aRange); //skip all the com stuff and give me the start/end
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PRInt32 FetchStartOffset(nsIDOMRange *aRange);
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nsIDOMNode* FetchEndParent(nsIDOMRange *aRange); //skip all the com stuff and give me the start/end
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PRInt32 FetchEndOffset(nsIDOMRange *aRange);
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nscoord FetchDesiredX(); //the x position requested by the Key Handling for up down
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void InvalidateDesiredX(); //do not listen to mDesiredX you must get another.
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void SetDesiredX(nscoord aX); //set the mDesiredX
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void setAnchorFocusRange(PRInt32); //pass in index into rangelist
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PRUint32 GetBatching(){return mBatching;}
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PRBool GetNotifyFrames(){return mNotifyFrames;}
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void SetDirty(PRBool aDirty=PR_TRUE){if (mBatching) mChangesDuringBatching = aDirty;}
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nsresult NotifySelectionListeners(); // add parameters to say collapsed etc?
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nsDirection GetDirection(){return mDirection;}
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void SetDirection(nsDirection aDir){mDirection = aDir;}
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NS_IMETHOD selectFrames(nsIDOMRange *aRange, PRBool aSelect);
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NS_IMETHOD FixupSelectionPoints(nsIDOMRange *aRange, nsDirection *aDir, PRBool *aFixupState);
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NS_IMETHOD SetOriginalAnchorPoint(nsIDOMNode *aNode, PRInt32 aOffset);
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NS_IMETHOD GetOriginalAnchorPoint(nsIDOMNode **aNode, PRInt32 *aOffset);
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NS_IMETHOD GetPrimaryFrameForFocusNode(nsIFrame **aResultFrame);
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nsCOMPtr<nsISupportsArray> mRangeArray;
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nsCOMPtr<nsIDOMRange> mAnchorFocusRange;
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nsCOMPtr<nsIDOMRange> mOriginalAnchorRange; //used as a point with range gravity for security
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PRBool mFixupState; //was there a fixup?
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nsDirection mDirection; //FALSE = focus, anchor; TRUE = anchor,focus
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//batching
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PRUint32 mBatching;
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PRBool mChangesDuringBatching;
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PRBool mNotifyFrames;
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nsCOMPtr<nsISupportsArray> mSelectionListeners;
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// for nsIScriptContextOwner
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void* mScriptObject;
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nsIFocusTracker *mTracker;
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PRBool mMouseDownState; //for drag purposes
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PRInt32 mDesiredX;
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PRBool mDesiredXSet;
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static nsIAtom *sTableAtom;
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static nsIAtom *sCellAtom;
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static nsIAtom *sTbodyAtom;
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static PRInt32 sInstanceCount;
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};
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class nsRangeListIterator : public nsIBidirectionalEnumerator
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{
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public:
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/*BEGIN nsIEnumerator interfaces
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see the nsIEnumerator for more details*/
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NS_DECL_ISUPPORTS
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NS_IMETHOD First();
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NS_IMETHOD Last();
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NS_IMETHOD Next();
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NS_IMETHOD Prev();
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NS_IMETHOD CurrentItem(nsISupports **aRange);
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NS_IMETHOD IsDone();
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/*END nsIEnumerator interfaces*/
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/*BEGIN Helper Methods*/
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NS_IMETHOD CurrentItem(nsIDOMRange **aRange);
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/*END Helper Methods*/
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private:
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friend class nsRangeList;
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nsRangeListIterator(nsRangeList *);
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virtual ~nsRangeListIterator();
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PRInt32 mIndex;
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nsRangeList *mRangeList;
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};
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nsresult NS_NewRangeList(nsIDOMSelection **);
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nsresult NS_NewRangeList(nsIDOMSelection **aRangeList)
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{
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nsRangeList *rlist = new nsRangeList;
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if (!rlist)
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return NS_ERROR_OUT_OF_MEMORY;
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*aRangeList = (nsIDOMSelection *)rlist;
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nsresult result = rlist->AddRef();
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if (!NS_SUCCEEDED(result))
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{
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delete rlist;
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}
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return result;
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}
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//Horrible statics but no choice
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nsIAtom *nsRangeList::sTableAtom = 0;
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nsIAtom *nsRangeList::sCellAtom = 0;
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nsIAtom *nsRangeList::sTbodyAtom = 0;
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PRInt32 nsRangeList::sInstanceCount = 0;
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///////////BEGIN nsRangeListIterator methods
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nsRangeListIterator::nsRangeListIterator(nsRangeList *aList)
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:mIndex(0)
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{
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if (!aList)
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{
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NS_NOTREACHED("nsRangeList");
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return;
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}
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mRangeList = aList;
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NS_INIT_REFCNT();
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}
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nsRangeListIterator::~nsRangeListIterator()
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{
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}
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////////////END nsRangeListIterator methods
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////////////BEGIN nsIRangeListIterator methods
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NS_IMETHODIMP
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nsRangeListIterator::Next()
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{
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mIndex++;
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PRUint32 cnt;
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nsresult rv = mRangeList->mRangeArray->Count(&cnt);
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if (NS_FAILED(rv)) return rv;
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if (mIndex < (PRInt32)cnt)
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return NS_OK;
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsRangeListIterator::Prev()
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{
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mIndex--;
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if (mIndex >= 0 )
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return NS_OK;
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsRangeListIterator::First()
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{
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if (!mRangeList)
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return NS_ERROR_NULL_POINTER;
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mIndex = 0;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsRangeListIterator::Last()
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{
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if (!mRangeList)
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return NS_ERROR_NULL_POINTER;
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PRUint32 cnt;
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nsresult rv = mRangeList->mRangeArray->Count(&cnt);
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if (NS_FAILED(rv)) return rv;
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mIndex = (PRInt32)cnt-1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsRangeListIterator::CurrentItem(nsISupports **aItem)
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{
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if (!aItem)
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return NS_ERROR_NULL_POINTER;
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PRUint32 cnt;
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nsresult rv = mRangeList->mRangeArray->Count(&cnt);
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if (NS_FAILED(rv)) return rv;
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if (mIndex >=0 && mIndex < (PRInt32)cnt){
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*aItem = mRangeList->mRangeArray->ElementAt(mIndex);
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsRangeListIterator::CurrentItem(nsIDOMRange **aItem)
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{
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if (!aItem)
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return NS_ERROR_NULL_POINTER;
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PRUint32 cnt;
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nsresult rv = mRangeList->mRangeArray->Count(&cnt);
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if (NS_FAILED(rv)) return rv;
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if (mIndex >=0 && mIndex < (PRInt32)cnt){
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nsCOMPtr<nsISupports> indexIsupports = dont_AddRef(mRangeList->mRangeArray->ElementAt(mIndex));
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return indexIsupports->QueryInterface(nsIDOMRange::GetIID(),(void **)aItem);
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsRangeListIterator::IsDone()
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{
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PRUint32 cnt;
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nsresult rv = mRangeList->mRangeArray->Count(&cnt);
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if (NS_FAILED(rv)) return rv;
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if (mIndex >= 0 && mIndex < (PRInt32)cnt ) {
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return NS_COMFALSE;
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}
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return NS_OK;
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}
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NS_IMPL_ADDREF(nsRangeListIterator)
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NS_IMPL_RELEASE(nsRangeListIterator)
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NS_IMETHODIMP
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nsRangeListIterator::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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// XXX shouldn't this just do mRangeList->QueryInterface instead of
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// having a complete copy of that method here? What about AddRef and
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// Release? shouldn't they be delegated too?
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if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
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nsIDOMSelection* tmp = mRangeList;
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*aInstancePtr = (void*)tmp;
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NS_ADDREF(mRangeList);
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return NS_OK;
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}
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if (aIID.Equals(nsIDOMSelection::GetIID())) {
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*aInstancePtr = (void *)mRangeList;
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NS_ADDREF(mRangeList);
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return NS_OK;
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}
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if (aIID.Equals(nsIFrameSelection::GetIID())) {
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*aInstancePtr = (void *)mRangeList;
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NS_ADDREF(mRangeList);
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return NS_OK;
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}
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if (aIID.Equals(nsIEnumerator::GetIID()) ||
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aIID.Equals(nsIBidirectionalEnumerator::GetIID())) {
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nsIBidirectionalEnumerator* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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////////////END nsIRangeListIterator methods
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#ifdef XP_MAC
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#pragma mark -
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#endif
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////////////BEGIN nsRangeList methods
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nsRangeList::nsRangeList()
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{
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NS_INIT_REFCNT();
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NS_NewISupportsArray(getter_AddRefs(mRangeArray));
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NS_NewISupportsArray(getter_AddRefs(mSelectionListeners));
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mBatching = 0;
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mChangesDuringBatching = PR_FALSE;
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mFixupState = PR_FALSE;
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mNotifyFrames = PR_TRUE;
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mScriptObject = nsnull;
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mDirection = eDirNext;
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if (sInstanceCount <= 0)
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{
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sTableAtom = NS_NewAtom("table");
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sCellAtom = NS_NewAtom("td");
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sTbodyAtom = NS_NewAtom("tbody");
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}
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sInstanceCount ++;
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}
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nsRangeList::~nsRangeList()
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{
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if (mRangeArray)
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{
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PRUint32 cnt;
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nsresult rv = mRangeArray->Count(&cnt);
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NS_ASSERTION(NS_SUCCEEDED(rv), "Count failed");
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for (PRUint32 i=0;i < cnt; i++)
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{
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mRangeArray->RemoveElementAt(i);
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}
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}
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if (mSelectionListeners)
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{
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PRUint32 cnt;
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nsresult rv = mSelectionListeners->Count(&cnt);
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NS_ASSERTION(NS_SUCCEEDED(rv), "Count failed");
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for (PRUint32 i=0;i < cnt; i++)
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{
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mSelectionListeners->RemoveElementAt(i);
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}
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}
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setAnchorFocusRange(-1);
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if (sInstanceCount <= 1)
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{
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NS_IF_RELEASE(sTableAtom);
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NS_IF_RELEASE(sCellAtom);
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NS_IF_RELEASE(sTbodyAtom);
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}
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sInstanceCount--;
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}
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//END nsRangeList methods
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NS_IMPL_ADDREF(nsRangeList)
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NS_IMPL_RELEASE(nsRangeList)
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NS_IMETHODIMP
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nsRangeList::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(nsIDOMSelection::GetIID())) {
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nsIDOMSelection* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(nsIFrameSelection::GetIID())) {
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nsIFrameSelection* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(nsIScriptObjectOwner::GetIID())) {
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nsIScriptObjectOwner* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
|
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if (aIID.Equals(nsIEnumerator::GetIID())) {
|
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nsRangeListIterator *iterator = new nsRangeListIterator(this);
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*aInstancePtr = (void *)iterator;
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return iterator->AddRef();
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}
|
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if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
|
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// use *first* base class for ISupports
|
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nsIFrameSelection* tmp1 = this;
|
|
nsISupports* tmp2 = tmp1;
|
|
*aInstancePtr = (void*) tmp2;
|
|
NS_ADDREF_THIS();
|
|
return NS_OK;
|
|
}
|
|
return NS_NOINTERFACE;
|
|
}
|
|
|
|
// note: this can return a nil anchor node
|
|
NS_METHOD nsRangeList::GetAnchorNode(nsIDOMNode** aAnchorNode)
|
|
{
|
|
if (!aAnchorNode || !mAnchorFocusRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
if (GetDirection() == eDirNext){
|
|
result = mAnchorFocusRange->GetStartParent(aAnchorNode);
|
|
}
|
|
else{
|
|
result = mAnchorFocusRange->GetEndParent(aAnchorNode);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_METHOD nsRangeList::GetAnchorOffset(PRInt32* aAnchorOffset)
|
|
{
|
|
if (!aAnchorOffset || !mAnchorFocusRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
if (GetDirection() == eDirNext){
|
|
result = mAnchorFocusRange->GetStartOffset(aAnchorOffset);
|
|
}
|
|
else{
|
|
result = mAnchorFocusRange->GetEndOffset(aAnchorOffset);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// note: this can return a nil focus node
|
|
NS_METHOD nsRangeList::GetFocusNode(nsIDOMNode** aFocusNode)
|
|
{
|
|
if (!aFocusNode || !mAnchorFocusRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
if (GetDirection() == eDirNext){
|
|
result = mAnchorFocusRange->GetEndParent(aFocusNode);
|
|
}
|
|
else{
|
|
result = mAnchorFocusRange->GetStartParent(aFocusNode);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_METHOD nsRangeList::GetFocusOffset(PRInt32* aFocusOffset)
|
|
{
|
|
if (!aFocusOffset || !mAnchorFocusRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
if (GetDirection() == eDirNext){
|
|
result = mAnchorFocusRange->GetEndOffset(aFocusOffset);
|
|
}
|
|
else{
|
|
result = mAnchorFocusRange->GetStartOffset(aFocusOffset);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
void nsRangeList::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*
|
|
nsRangeList::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
|
|
nsRangeList::FetchAnchorOffset()
|
|
{
|
|
PRInt32 returnval;
|
|
if (NS_SUCCEEDED(GetAnchorOffset(&returnval)))//this queries
|
|
return returnval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
nsIDOMNode*
|
|
nsRangeList::FetchOriginalAnchorNode() //where did the ORIGINAL selection begin
|
|
{
|
|
nsCOMPtr<nsIDOMNode>returnval;
|
|
PRInt32 unused;
|
|
GetOriginalAnchorPoint(getter_AddRefs(returnval), &unused);//this queries
|
|
return returnval;
|
|
}
|
|
|
|
|
|
|
|
PRInt32
|
|
nsRangeList::FetchOriginalAnchorOffset()
|
|
{
|
|
nsCOMPtr<nsIDOMNode>unused;
|
|
PRInt32 returnval;
|
|
if (NS_SUCCEEDED(GetOriginalAnchorPoint(getter_AddRefs(unused), &returnval)))//this queries
|
|
return returnval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
nsIDOMNode*
|
|
nsRangeList::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
|
|
nsRangeList::FetchFocusOffset()
|
|
{
|
|
PRInt32 returnval;
|
|
if (NS_SUCCEEDED(GetFocusOffset(&returnval)))//this queries
|
|
return returnval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
nsIDOMNode*
|
|
nsRangeList::FetchStartParent(nsIDOMRange *aRange) //skip all the com stuff and give me the start/end
|
|
{
|
|
if (!aRange)
|
|
return nsnull;
|
|
nsCOMPtr<nsIDOMNode> returnval;
|
|
aRange->GetStartParent(getter_AddRefs(returnval));
|
|
return returnval;
|
|
}
|
|
|
|
|
|
|
|
PRInt32
|
|
nsRangeList::FetchStartOffset(nsIDOMRange *aRange)
|
|
{
|
|
if (!aRange)
|
|
return nsnull;
|
|
PRInt32 returnval;
|
|
if (NS_SUCCEEDED(aRange->GetStartOffset(&returnval)))
|
|
return returnval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
nsIDOMNode*
|
|
nsRangeList::FetchEndParent(nsIDOMRange *aRange) //skip all the com stuff and give me the start/end
|
|
{
|
|
if (!aRange)
|
|
return nsnull;
|
|
nsCOMPtr<nsIDOMNode> returnval;
|
|
aRange->GetEndParent(getter_AddRefs(returnval));
|
|
return returnval;
|
|
}
|
|
|
|
|
|
|
|
PRInt32
|
|
nsRangeList::FetchEndOffset(nsIDOMRange *aRange)
|
|
{
|
|
if (!aRange)
|
|
return nsnull;
|
|
PRInt32 returnval;
|
|
if (NS_SUCCEEDED(aRange->GetEndOffset(&returnval)))
|
|
return returnval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
nscoord
|
|
nsRangeList::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 {
|
|
nsPoint 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;
|
|
|
|
result = caret->GetWindowRelativeCoordinates(coord,collapsed);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
return coord.x;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void
|
|
nsRangeList::InvalidateDesiredX() //do not listen to mDesiredX you must get another.
|
|
{
|
|
mDesiredXSet = PR_FALSE;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
nsRangeList::SetDesiredX(nscoord aX) //set the mDesiredX
|
|
{
|
|
mDesiredX = aX;
|
|
mDesiredXSet = PR_TRUE;
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsRangeList::AddItem(nsISupports *aItem)
|
|
{
|
|
if (!mRangeArray)
|
|
return NS_ERROR_FAILURE;
|
|
if (!aItem)
|
|
return NS_ERROR_NULL_POINTER;
|
|
mRangeArray->AppendElement(aItem);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsRangeList::RemoveItem(nsISupports *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));
|
|
|
|
if (aItem == indexIsupports.get())
|
|
{
|
|
mRangeArray->RemoveElementAt(i);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
return NS_COMFALSE;
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsRangeList::Clear()
|
|
{
|
|
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<nsIDOMRange> range;
|
|
nsCOMPtr<nsISupports> isupportsindex = dont_AddRef(mRangeArray->ElementAt(0));
|
|
range = do_QueryInterface(isupportsindex);
|
|
mRangeArray->RemoveElementAt(0);
|
|
selectFrames(range, 0);
|
|
// Does RemoveElementAt also delete the elements?
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#endif
|
|
|
|
//BEGIN nsIFrameSelection methods
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
nsCOMPtr<nsIAtom> GetTag(nsIDOMNode *aNode)
|
|
{
|
|
nsCOMPtr<nsIAtom> atom;
|
|
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to nsHTMLEditRules::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(nsIContent::GetIID(),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(nsIDOMNode::GetIID(),(void **)aParent);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::Init(nsIFocusTracker *aTracker)
|
|
{
|
|
mTracker = aTracker;
|
|
mMouseDownState = PR_FALSE;
|
|
mDesiredXSet = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::ShutDown()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::HandleTextEvent(nsGUIEvent *aGUIEvent)
|
|
{
|
|
if (!aGUIEvent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
#ifdef DEBUG_TAGUE
|
|
printf("nsRangeList: HandleTextEvent\n");
|
|
#endif
|
|
nsresult result(NS_OK);
|
|
if (NS_TEXT_EVENT == aGUIEvent->message) {
|
|
|
|
result = 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
|
|
nsRangeList::HandleKeyEvent(nsGUIEvent *aGuiEvent)
|
|
{
|
|
if (!aGuiEvent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
STATUS_CHECK_RETURN_MACRO();
|
|
|
|
nsresult result = NS_OK;
|
|
if (NS_KEY_DOWN == aGuiEvent->message) {
|
|
nsKeyEvent *keyEvent = (nsKeyEvent *)aGuiEvent; //this is ok. It really is a keyevent
|
|
nsCOMPtr<nsIDOMNode> weakNodeUsed;
|
|
PRInt32 offsetused = 0;
|
|
nsSelectionAmount amount = eSelectCharacter;
|
|
if (keyEvent->isControl)
|
|
amount = eSelectWord;
|
|
|
|
PRBool isCollapsed;
|
|
nscoord desiredX; //we must keep this around and revalidate it when its just UP/DOWN
|
|
|
|
result = GetIsCollapsed(&isCollapsed);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
if (keyEvent->keyCode == nsIDOMUIEvent::VK_UP || keyEvent->keyCode == nsIDOMUIEvent::VK_DOWN)
|
|
desiredX= FetchDesiredX();
|
|
|
|
if (!isCollapsed && !keyEvent->isShift) {
|
|
switch (keyEvent->keyCode){
|
|
case nsIDOMUIEvent::VK_LEFT :
|
|
case nsIDOMUIEvent::VK_UP : {
|
|
if ((GetDirection() == eDirPrevious)) { //f,a
|
|
offsetused = FetchFocusOffset();
|
|
weakNodeUsed = FetchFocusNode();
|
|
}
|
|
else {
|
|
offsetused = FetchAnchorOffset();
|
|
weakNodeUsed = FetchAnchorNode();
|
|
}
|
|
result = Collapse(weakNodeUsed,offsetused);
|
|
|
|
} break;
|
|
case nsIDOMUIEvent::VK_RIGHT :
|
|
case nsIDOMUIEvent::VK_DOWN : {
|
|
if ((GetDirection() == eDirPrevious)) { //f,a
|
|
offsetused = FetchAnchorOffset();
|
|
weakNodeUsed = FetchAnchorNode();
|
|
}
|
|
else {
|
|
offsetused = FetchFocusOffset();
|
|
weakNodeUsed = FetchFocusNode();
|
|
}
|
|
result = Collapse(weakNodeUsed,offsetused);
|
|
} break;
|
|
}
|
|
if (keyEvent->keyCode == nsIDOMUIEvent::VK_UP || keyEvent->keyCode == nsIDOMUIEvent::VK_DOWN)
|
|
SetDesiredX(desiredX);
|
|
return NS_OK;
|
|
}
|
|
|
|
offsetused = FetchFocusOffset();
|
|
weakNodeUsed = FetchFocusNode();
|
|
nsIFrame *frame;
|
|
nsCOMPtr<nsIContent> content;
|
|
result = GetPrimaryFrameForFocusNode(&frame);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
switch (keyEvent->keyCode){
|
|
case nsIDOMUIEvent::VK_LEFT :
|
|
{
|
|
//we need to look for the previous PAINTED location to move the cursor to.
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(frame->PeekOffset(mTracker, desiredX, amount, eDirPrevious, offsetused, getter_AddRefs(content), &offsetused, PR_FALSE)) && content){
|
|
result = TakeFocus(content, offsetused, offsetused, keyEvent->isShift);
|
|
}
|
|
result = ScrollIntoView();
|
|
}
|
|
break;
|
|
case nsIDOMUIEvent::VK_RIGHT :
|
|
{
|
|
//we need to look for the previous PAINTED location to move the cursor to.
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(frame->PeekOffset(mTracker, desiredX, amount, eDirNext, offsetused, getter_AddRefs(content), &offsetused, PR_FALSE)) && content){
|
|
result = TakeFocus(content, offsetused, offsetused, keyEvent->isShift);
|
|
}
|
|
result = ScrollIntoView();
|
|
}
|
|
break;
|
|
case nsIDOMUIEvent::VK_UP :
|
|
case nsIDOMUIEvent::VK_DOWN :
|
|
{
|
|
//we need to look for the previous PAINTED location to move the cursor to.
|
|
amount = eSelectLine;
|
|
if (nsIDOMUIEvent::VK_UP == keyEvent->keyCode)
|
|
{
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(frame->PeekOffset(mTracker, desiredX, amount, eDirPrevious, offsetused, getter_AddRefs(content), &offsetused, PR_FALSE)) && content){
|
|
result = TakeFocus(content, offsetused, offsetused, keyEvent->isShift);
|
|
}
|
|
}
|
|
else
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(frame->PeekOffset(mTracker, desiredX, amount, eDirNext, offsetused, getter_AddRefs(content), &offsetused, PR_FALSE)) && content){
|
|
result = TakeFocus(content, offsetused, offsetused, keyEvent->isShift);
|
|
}
|
|
result = ScrollIntoView();
|
|
SetDesiredX(desiredX);
|
|
}
|
|
break;
|
|
#ifdef DEBUG_NAVIGATION
|
|
printf("debug vk down\n");
|
|
#endif
|
|
break;
|
|
default :break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
//utility method to get the primary frame of node or use the offset to get frame of child node
|
|
NS_IMETHODIMP
|
|
nsRangeList::GetPrimaryFrameForFocusNode(nsIFrame **aReturnFrame)
|
|
{
|
|
if (!aReturnFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
nsCOMPtr<nsIDOMNode> node = dont_QueryInterface(FetchFocusNode());
|
|
if (!node)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(node, &result);
|
|
if (NS_FAILED(result) || !content)
|
|
return result;
|
|
|
|
PRBool canContainChildren = PR_FALSE;
|
|
result = content->CanContainChildren(canContainChildren);
|
|
if (NS_SUCCEEDED(result) && canContainChildren)
|
|
{
|
|
PRInt32 offset = FetchFocusOffset();
|
|
if (GetDirection() == eDirNext)
|
|
offset--;
|
|
if (offset >0)
|
|
{
|
|
nsCOMPtr<nsIContent> child;
|
|
result = content->ChildAt(offset, *getter_AddRefs(child));
|
|
if (NS_FAILED(result) || !child) //out of bounds?
|
|
return result;
|
|
content = child;//releases the focusnode
|
|
}
|
|
}
|
|
result = mTracker->GetPrimaryFrameFor(content,aReturnFrame);
|
|
return result;
|
|
}
|
|
|
|
|
|
#ifdef DEBUG
|
|
void nsRangeList::printSelection()
|
|
{
|
|
PRUint32 cnt;
|
|
(void)mRangeArray->Count(&cnt);
|
|
printf("nsRangeList 0x%lx: %d items\n", (unsigned long)this,
|
|
mRangeArray ? (int)cnt : -99);
|
|
|
|
// Get an iterator
|
|
nsRangeListIterator iter(this);
|
|
nsresult res = iter.First();
|
|
if (!NS_SUCCEEDED(res))
|
|
{
|
|
printf(" Can't get an iterator\n");
|
|
return;
|
|
}
|
|
|
|
while (iter.IsDone())
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
res = iter.CurrentItem(getter_AddRefs(range));
|
|
if (!NS_SUCCEEDED(res))
|
|
{
|
|
printf(" OOPS\n");
|
|
return;
|
|
}
|
|
printRange(range);
|
|
iter.Next();
|
|
}
|
|
|
|
printf("Anchor is 0x%lx, %d\n",
|
|
(unsigned long)(nsIDOMNode*)FetchAnchorNode(), FetchAnchorOffset());
|
|
printf("Focus is 0x%lx, %d\n",
|
|
(unsigned long)(nsIDOMNode*)FetchFocusNode(), FetchFocusOffset());
|
|
printf(" ... end of selection\n");
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
|
|
|
|
//the idea of this helper method is to select, deselect "top to bottom" traversing through the frames
|
|
NS_IMETHODIMP
|
|
nsRangeList::selectFrames(nsIDOMRange *aRange, PRBool aFlags)
|
|
{
|
|
if (!aRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIContentIterator> iter;
|
|
nsresult result = nsComponentManager::CreateInstance(kCSubtreeIteratorCID, nsnull,
|
|
nsIContentIterator::GetIID(),
|
|
getter_AddRefs(iter));
|
|
if ((NS_SUCCEEDED(result)) && iter)
|
|
{
|
|
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 = mTracker->GetPrimaryFrameFor(content, &frame);
|
|
if (NS_SUCCEEDED(result) && frame)
|
|
frame->SetSelected(aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow
|
|
}
|
|
//end start content
|
|
result = iter->First();
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
while (NS_COMFALSE == iter->IsDone())
|
|
{
|
|
result = iter->CurrentNode(getter_AddRefs(content));
|
|
if (NS_FAILED(result) || !content)
|
|
return result;
|
|
result = mTracker->GetPrimaryFrameFor(content, &frame);
|
|
if (NS_SUCCEEDED(result) && frame)
|
|
frame->SetSelected(aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow
|
|
result = iter->Next();
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
}
|
|
}
|
|
//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 = mTracker->GetPrimaryFrameFor(content, &frame);
|
|
if (NS_SUCCEEDED(result) && frame)
|
|
frame->SetSelected(aRange,aFlags,eSpreadDown);//spread from here to hit all frames in flow
|
|
}
|
|
}
|
|
//end end parent
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
hard to go from nodes to frames, easy the other way!
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsRangeList::TakeFocus(nsIContent *aNewFocus, PRUint32 aContentOffset,
|
|
PRUint32 aContentEndOffset, PRBool aContinueSelection)
|
|
{
|
|
if (!aNewFocus)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (GetBatching())
|
|
return NS_ERROR_FAILURE;
|
|
STATUS_CHECK_RETURN_MACRO();
|
|
//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;
|
|
//if (NS_FAILED(parent->GetParent(*getter_AddRefs(parent2))) || !parent2)
|
|
//return NS_ERROR_FAILURE;
|
|
|
|
//END HACKHACKHACK /checking for root frames/content
|
|
|
|
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;
|
|
Collapse(domNode, aContentOffset);
|
|
mBatching = batching;
|
|
mChangesDuringBatching = changes;
|
|
if (aContentEndOffset > aContentOffset)
|
|
Extend(domNode,aContentEndOffset);
|
|
}
|
|
else {
|
|
// Now update the range list:
|
|
if (aContinueSelection && domNode)
|
|
{
|
|
Extend(domNode, aContentOffset);
|
|
if (mDirection == eDirNext && aContentEndOffset > aContentOffset) //didnt go far enough
|
|
{
|
|
Extend(domNode, aContentEndOffset);//this will only redraw the diff
|
|
}
|
|
}
|
|
}
|
|
|
|
return NotifySelectionListeners();
|
|
}
|
|
|
|
|
|
|
|
NS_METHOD
|
|
nsRangeList::LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength,
|
|
PRInt32 *aStart, PRInt32 *aEnd, PRBool *aDrawSelected, PRUint32 aFlag/*not used*/)
|
|
{
|
|
if (!aContent || !aStart || !aEnd || !aDrawSelected)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (aFlag)
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
|
|
STATUS_CHECK_RETURN_MACRO();
|
|
//THIS WILL NOT WORK FOR MULTIPLE SELECTIONS YET!!!
|
|
nsCOMPtr<nsIDOMNode> passedInNode;
|
|
passedInNode = do_QueryInterface(aContent);
|
|
if (!passedInNode)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
*aDrawSelected = PR_FALSE;
|
|
PRUint32 cnt;
|
|
nsresult rv = mRangeArray->Count(&cnt);
|
|
if (NS_FAILED(rv)) return rv;
|
|
for (PRUint32 i =0; i<cnt && i < 1; 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->GetStartParent(getter_AddRefs(startNode));
|
|
range->GetStartOffset(&startOffset);
|
|
range->GetEndParent(getter_AddRefs(endNode));
|
|
range->GetEndOffset(&endOffset);
|
|
if (passedInNode == startNode && passedInNode == endNode){
|
|
if (startOffset < (aContentOffset + aContentLength) &&
|
|
endOffset > aContentOffset){
|
|
*aDrawSelected = PR_TRUE;
|
|
*aStart = PR_MAX(0,startOffset - aContentOffset);
|
|
*aEnd = PR_MIN(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
}
|
|
else if (passedInNode == startNode){
|
|
if (startOffset < (aContentOffset + aContentLength)){
|
|
*aDrawSelected = PR_TRUE;
|
|
*aStart = PR_MAX(0,startOffset - aContentOffset);
|
|
*aEnd = aContentLength;
|
|
}
|
|
}
|
|
else if (passedInNode == endNode){
|
|
if (endOffset > aContentOffset){
|
|
*aDrawSelected = PR_TRUE;
|
|
*aStart = 0;
|
|
*aEnd = PR_MIN(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
}
|
|
else {
|
|
*aDrawSelected = PR_TRUE;
|
|
*aStart = 0;
|
|
*aEnd = aContentLength;
|
|
}
|
|
}
|
|
else
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_METHOD
|
|
nsRangeList::SetMouseDownState(PRBool aState)
|
|
{
|
|
mMouseDownState = aState;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_METHOD
|
|
nsRangeList::GetMouseDownState(PRBool *aState)
|
|
{
|
|
if (!aState)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aState = mMouseDownState;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
//////////END FRAMESELECTION
|
|
NS_METHOD
|
|
nsRangeList::AddSelectionListener(nsIDOMSelectionListener* inNewListener)
|
|
{
|
|
if (!mSelectionListeners)
|
|
return NS_ERROR_FAILURE;
|
|
if (!inNewListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsISupports> isupports = do_QueryInterface(inNewListener);
|
|
mSelectionListeners->AppendElement(isupports); // addrefs
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::RemoveSelectionListener(nsIDOMSelectionListener* inListenerToRemove)
|
|
{
|
|
if (!mSelectionListeners)
|
|
return NS_ERROR_FAILURE;
|
|
if (!inListenerToRemove )
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsISupports> isupports = do_QueryInterface(inListenerToRemove);
|
|
return mSelectionListeners->RemoveElement(isupports); // releases
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::StartBatchChanges()
|
|
{
|
|
nsresult result(NS_OK);
|
|
mBatching++;
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::EndBatchChanges()
|
|
{
|
|
nsresult result(NS_OK);
|
|
mBatching--;
|
|
NS_ASSERTION(mBatching >=0,"Bad mBatching");
|
|
if (mBatching == 0 && mChangesDuringBatching){
|
|
mChangesDuringBatching = PR_FALSE;
|
|
NotifySelectionListeners();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::ScrollIntoView()
|
|
{
|
|
nsresult result;
|
|
nsIFrame *frame;
|
|
result = GetPrimaryFrameForFocusNode(&frame);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
result = mTracker->ScrollFrameIntoView(frame);
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsRangeList::NotifySelectionListeners()
|
|
{
|
|
if (!mSelectionListeners)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (GetBatching()){
|
|
SetDirty();
|
|
return NS_OK;
|
|
}
|
|
PRUint32 cnt;
|
|
nsresult rv = mSelectionListeners->Count(&cnt);
|
|
if (NS_FAILED(rv)) return rv;
|
|
for (PRUint32 i = 0; i < cnt;i++)
|
|
{
|
|
nsCOMPtr<nsIDOMSelectionListener> thisListener;
|
|
nsCOMPtr<nsISupports> isupports(dont_AddRef(mSelectionListeners->ElementAt(i)));
|
|
thisListener = do_QueryInterface(isupports);
|
|
if (thisListener)
|
|
thisListener->NotifySelectionChanged();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//END nsIFrameSelection methods
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#endif
|
|
|
|
//BEGIN nsIDOMSelection interface implementations
|
|
|
|
/** ClearSelection zeroes the selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsRangeList::ClearSelection()
|
|
{
|
|
nsresult result = Clear();
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
return NotifySelectionListeners();
|
|
// 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
|
|
nsRangeList::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);
|
|
selectFrames(aRange, PR_TRUE);
|
|
ScrollIntoView();
|
|
|
|
return NotifySelectionListeners();
|
|
}
|
|
|
|
|
|
/*
|
|
* Collapse sets the whole selection to be one point.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsRangeList::Collapse(nsIDOMNode* aParentNode, PRInt32 aOffset)
|
|
{
|
|
if (!aParentNode)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
nsresult result;
|
|
InvalidateDesiredX();
|
|
// Delete all of the current ranges
|
|
if (!mRangeArray)
|
|
return NS_ERROR_FAILURE;
|
|
if (NS_FAILED(SetOriginalAnchorPoint(aParentNode,aOffset)))
|
|
return NS_ERROR_FAILURE; //???
|
|
Clear();
|
|
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
result = nsComponentManager::CreateInstance(kRangeCID, nsnull,
|
|
nsIDOMRange::GetIID(),
|
|
getter_AddRefs(range));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (! range){
|
|
NS_ASSERTION(PR_FALSE,"Create Instance Failed nsRangeList::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)
|
|
{
|
|
nsString tagString;
|
|
tag->ToString(tagString);
|
|
char * tagCString = tagString.ToNewCString();
|
|
printf ("Sel. Collapse to %p %s %d\n", content, tagCString, aOffset);
|
|
delete [] tagCString;
|
|
}
|
|
}
|
|
else {
|
|
printf ("Sel. Collapse set to null parent.\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
result = AddItem(range);
|
|
setAnchorFocusRange(0);
|
|
selectFrames(range,PR_TRUE);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
return NotifySelectionListeners();
|
|
}
|
|
|
|
/*
|
|
* IsCollapsed -- is the whole selection just one point, or unset?
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsRangeList::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->GetIsCollapsed(aIsCollapsed));
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::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
|
|
nsRangeList::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;
|
|
}
|
|
|
|
|
|
//may change parameters may not.
|
|
//return NS_ERROR_FAILED if invalid new selection between anchor and passed in parameters
|
|
NS_IMETHODIMP
|
|
nsRangeList::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() == sTbodyAtom)
|
|
return NS_ERROR_FAILURE; //cannot select INTO row node ony cells
|
|
|
|
//get common parent
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
res = aRange->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
|
|
//if src EVER hits a table, all bets are off!
|
|
nsCOMPtr<nsIDOMNode> tempNode;
|
|
nsCOMPtr<nsIDOMNode> tempNode2;
|
|
PRBool cellMode = PR_FALSE;
|
|
PRBool dirty = PR_FALSE;
|
|
if (startNode != endNode)
|
|
{
|
|
if (parent != startNode)
|
|
{
|
|
result = startNode->GetParentNode(getter_AddRefs(tempNode));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
while (tempNode != parent)
|
|
{
|
|
atom = GetTag(tempNode);
|
|
if (atom.get() == sTableAtom)
|
|
{
|
|
return NS_ERROR_FAILURE; //cannot do this
|
|
}
|
|
else if (atom.get() == 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++;
|
|
dirty = PR_TRUE;
|
|
}
|
|
result = tempNode->GetParentNode(getter_AddRefs(tempNode2));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
tempNode = tempNode2;
|
|
}
|
|
}
|
|
|
|
//now for dest node
|
|
if (parent != endNode)
|
|
{
|
|
result = endNode->GetParentNode(getter_AddRefs(tempNode));
|
|
PRBool found = !cellMode;
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
while (tempNode != parent)
|
|
{
|
|
atom = GetTag(tempNode);
|
|
if (atom.get() == 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++;
|
|
dirty = PR_TRUE;
|
|
}
|
|
else
|
|
found = PR_FALSE; //didnt find the right cell yet
|
|
}
|
|
else if (atom.get() == 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;
|
|
dirty = PR_TRUE;
|
|
}
|
|
result = tempNode->GetParentNode(getter_AddRefs(tempNode2));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
tempNode = tempNode2;
|
|
}
|
|
if (!found)
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
if (FetchAnchorNode() != startNode.get() || startOffset != FetchAnchorOffset())
|
|
dirty = PR_TRUE; //something has changed we are dirty no matter what
|
|
if (dirty && *aDir != mDirection) //fixup took place but new direction all bets are off
|
|
{
|
|
*aFixupState = PR_TRUE;
|
|
mFixupState = PR_FALSE;
|
|
}
|
|
else
|
|
if (startNode.get() != FetchOriginalAnchorNode() && PR_TRUE == mFixupState) //no longer a fixup
|
|
{
|
|
*aFixupState = PR_TRUE;
|
|
mFixupState = PR_FALSE;
|
|
}
|
|
else
|
|
{
|
|
mFixupState = dirty;
|
|
*aFixupState = dirty;
|
|
}
|
|
if (dirty){
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsRangeList::SetOriginalAnchorPoint(nsIDOMNode *aNode, PRInt32 aOffset)
|
|
{
|
|
if (!aNode){
|
|
mOriginalAnchorRange = 0;
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsIDOMRange> newRange;
|
|
nsresult result;
|
|
result = nsComponentManager::CreateInstance(kRangeCID, nsnull,
|
|
nsIDOMRange::GetIID(),
|
|
getter_AddRefs(newRange));
|
|
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
|
|
nsRangeList::GetOriginalAnchorPoint(nsIDOMNode **aNode, PRInt32 *aOffset)
|
|
{
|
|
if (!aNode || !aOffset || !mOriginalAnchorRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
result = mOriginalAnchorRange->GetStartParent(aNode);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
result = mOriginalAnchorRange->GetStartOffset(aOffset);
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
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
|
|
nsRangeList::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;
|
|
InvalidateDesiredX();
|
|
nsCOMPtr<nsIDOMRange> difRange;
|
|
nsresult res;
|
|
res = nsComponentManager::CreateInstance(kRangeCID, nsnull,
|
|
nsIDOMRange::GetIID(),
|
|
getter_AddRefs(difRange));
|
|
|
|
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
res = mAnchorFocusRange->Clone(getter_AddRefs(range));
|
|
|
|
nsCOMPtr<nsIDOMNode> startNode;
|
|
nsCOMPtr<nsIDOMNode> endNode;
|
|
PRInt32 startOffset;
|
|
PRInt32 endOffset;
|
|
|
|
range->GetStartParent(getter_AddRefs(startNode));
|
|
range->GetEndParent(getter_AddRefs(endNode));
|
|
range->GetStartOffset(&startOffset);
|
|
range->GetEndOffset(&endOffset);
|
|
|
|
|
|
nsDirection dir = GetDirection();
|
|
PRBool fixupState; //if there was a previous fixup the optimal drawing erasing will NOT work
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
res = nsComponentManager::CreateInstance(kRangeCID, nsnull,
|
|
nsIDOMRange::GetIID(),
|
|
getter_AddRefs(difRange));
|
|
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
//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 ((result1 == 0 && result3 < 0) || (result1 <= 0 && result2 <= 0)){//a1,2 a,1,2
|
|
//select from 1 to 2
|
|
res = range->SetEnd(aParentNode,aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
dir = eDirNext;
|
|
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{
|
|
res = difRange->SetEnd(FetchEndParent(range), FetchEndOffset(range));
|
|
res |= difRange->SetStart(FetchFocusNode(), FetchFocusOffset());
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
selectFrames(difRange , PR_TRUE);
|
|
}
|
|
}
|
|
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;
|
|
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
|
|
selectFrames(range, PR_TRUE);
|
|
}
|
|
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;
|
|
|
|
dir = eDirNext;
|
|
res = range->SetEnd(aParentNode,aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
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 {
|
|
selectFrames(difRange, 0);//deselect now if fixup succeeded
|
|
difRange->SetEnd(FetchEndParent(range),FetchEndOffset(range));
|
|
selectFrames(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;
|
|
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 {
|
|
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;
|
|
//deselect from 1 to a
|
|
selectFrames(difRange , PR_FALSE);
|
|
}
|
|
//select from a to 2
|
|
selectFrames(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;
|
|
|
|
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 {
|
|
selectFrames(difRange , PR_FALSE);
|
|
difRange->SetStart(FetchStartParent(range),FetchStartOffset(range));
|
|
selectFrames(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;
|
|
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
|
|
{
|
|
//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());
|
|
selectFrames(difRange, 0);
|
|
}
|
|
//select from 2 to a
|
|
selectFrames(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 = 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 {
|
|
res = difRange->SetEnd(FetchFocusNode(), FetchFocusOffset());
|
|
res |= difRange->SetStart(FetchStartParent(range), FetchStartOffset(range));
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
selectFrames(difRange, PR_TRUE);
|
|
}
|
|
}
|
|
|
|
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);
|
|
/*hack*/
|
|
range->GetStartParent(getter_AddRefs(startNode));
|
|
range->GetEndParent(getter_AddRefs(endNode));
|
|
range->GetStartOffset(&startOffset);
|
|
range->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;//???
|
|
/*end hack*/
|
|
ScrollIntoView();
|
|
return NotifySelectionListeners();
|
|
}
|
|
|
|
|
|
/** DeleteFromDocument
|
|
* will return NS_OK if it handles the event or NS_COMFALSE if not.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsRangeList::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;
|
|
GetIsCollapsed(&isCollapsed);
|
|
if (isCollapsed)
|
|
{
|
|
// If the offset is positive, then it's easy:
|
|
if (FetchFocusOffset() > 0)
|
|
{
|
|
Extend(FetchFocusNode(), 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
|
|
nsRangeListIterator iter(this);
|
|
res = iter.First();
|
|
if (!NS_SUCCEEDED(res))
|
|
return res;
|
|
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
while (iter.IsDone())
|
|
{
|
|
res = iter.CurrentItem(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)
|
|
Collapse(FetchAnchorNode(), FetchAnchorOffset()-1);
|
|
else if (FetchAnchorOffset() > 0)
|
|
Collapse(FetchAnchorNode(), FetchAnchorOffset());
|
|
#ifdef DEBUG
|
|
else
|
|
printf("Don't know how to set selection back past frame boundary\n");
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//END nsIDOMSelection interface implementations
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#endif
|
|
|
|
// BEGIN nsIScriptContextOwner interface implementations
|
|
NS_IMETHODIMP
|
|
nsRangeList::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
|
|
nsRangeList::SetScriptObject(void *aScriptObject)
|
|
{
|
|
mScriptObject = aScriptObject;
|
|
return NS_OK;
|
|
}
|
|
|
|
// END nsIScriptContextOwner interface implementations
|
|
|