зеркало из https://github.com/mozilla/pjs.git
5939 строки
182 KiB
C++
5939 строки
182 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=78: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Mats Palmgren <matspal@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Implementation of selection: nsISelection,nsISelectionPrivate and nsFrameSelection
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*/
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#include "nsCOMPtr.h"
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#include "nsWeakReference.h"
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#include "nsIFactory.h"
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#include "nsIEnumerator.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsFrameSelection.h"
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#include "nsISelection.h"
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#include "nsISelection2.h"
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#include "nsISelectionPrivate.h"
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#include "nsISelectionListener.h"
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#include "nsIComponentManager.h"
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#include "nsContentCID.h"
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#include "nsIContent.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMNode.h"
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#include "nsRange.h"
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#include "nsCOMArray.h"
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#include "nsGUIEvent.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsITableLayout.h"
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#include "nsITableCellLayout.h"
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#include "nsIDOMNodeList.h"
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#include "nsTArray.h"
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#include "nsIScrollableFrame.h"
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#include "nsISelectionListener.h"
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#include "nsIContentIterator.h"
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#include "nsIDocumentEncoder.h"
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// for IBMBIDI
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#include "nsFrameTraversal.h"
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#include "nsILineIterator.h"
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#include "nsGkAtoms.h"
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#include "nsIFrameTraversal.h"
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#include "nsLayoutUtils.h"
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#include "nsLayoutCID.h"
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#include "nsBidiPresUtils.h"
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static NS_DEFINE_CID(kFrameTraversalCID, NS_FRAMETRAVERSAL_CID);
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#include "nsTextFrame.h"
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#include "nsIDOMText.h"
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#include "nsContentUtils.h"
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#include "nsThreadUtils.h"
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//included for desired x position;
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsCaret.h"
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#include "nsIDeviceContext.h"
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#include "nsITimer.h"
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#include "nsIServiceManager.h"
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#include "nsFrameManager.h"
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#include "nsIScrollableFrame.h"
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// notifications
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#include "nsIDOMDocument.h"
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#include "nsIDocument.h"
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#include "nsISelectionController.h"//for the enums
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#include "nsAutoCopyListener.h"
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#include "nsCopySupport.h"
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#include "nsIClipboard.h"
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#ifdef IBMBIDI
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#include "nsIBidiKeyboard.h"
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#endif // IBMBIDI
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//#define DEBUG_TABLE 1
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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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class nsSelectionIterator;
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class nsFrameSelection;
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class nsAutoScrollTimer;
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static PRBool IsValidSelectionPoint(nsFrameSelection *aFrameSel, nsINode *aNode);
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static nsIAtom *GetTag(nsINode *aNode);
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// returns the parent
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static nsINode* ParentOffset(nsINode *aNode, PRInt32 *aChildOffset);
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static nsINode* GetCellParent(nsINode *aDomNode);
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#ifdef PRINT_RANGE
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static void printRange(nsIRange *aDomRange);
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#define DEBUG_OUT_RANGE(x) printRange(x)
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#else
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#define DEBUG_OUT_RANGE(x)
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#endif //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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//#define DEBUG_TABLE_SELECTION 1
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struct CachedOffsetForFrame {
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CachedOffsetForFrame()
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: mCachedFrameOffset(0, 0) // nsPoint ctor
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, mLastCaretFrame(nsnull)
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, mLastContentOffset(0)
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, mCanCacheFrameOffset(PR_FALSE)
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{}
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nsPoint mCachedFrameOffset; // cached frame offset
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nsIFrame* mLastCaretFrame; // store the frame the caret was last drawn in.
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PRInt32 mLastContentOffset; // store last content offset
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PRPackedBool mCanCacheFrameOffset; // cached frame offset is valid?
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};
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struct RangeData
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{
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RangeData(nsIRange* aRange) :
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mRange(aRange) {}
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nsCOMPtr<nsIRange> mRange;
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nsTextRangeStyle mTextRangeStyle;
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};
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static RangeData sEmptyData(nsnull);
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// Note, the ownership of nsTypedSelection depends on which way the object is
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// created. When nsFrameSelection has created nsTypedSelection,
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// addreffing/releasing nsTypedSelection object is aggregated to
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// nsFrameSelection. Otherwise normal addref/release is used.
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// This ensures that nsFrameSelection is never deleted before its
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// nsTypedSelections.
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class nsTypedSelection : public nsISelection2,
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public nsISelectionPrivate,
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public nsSupportsWeakReference
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{
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public:
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nsTypedSelection();
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nsTypedSelection(nsFrameSelection *aList);
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virtual ~nsTypedSelection();
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsTypedSelection, nsISelection)
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NS_DECL_NSISELECTION
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NS_DECL_NSISELECTION2
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NS_DECL_NSISELECTIONPRIVATE
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// utility methods for scrolling the selection into view
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nsresult GetPresContext(nsPresContext **aPresContext);
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nsresult GetPresShell(nsIPresShell **aPresShell);
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// Returns the position of the region, and frame that that position is relative
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// to. The 'position' is a zero-width rectangle.
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nsIFrame* GetSelectionAnchorGeometry(SelectionRegion aRegion, nsRect *aRect);
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nsresult PostScrollSelectionIntoViewEvent(SelectionRegion aRegion);
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// aDoFlush only matters if aIsSynchronous is true. If not, we'll just flush
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// when the scroll event fires so we make sure to scroll to the right place.
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nsresult ScrollIntoView(SelectionRegion aRegion, PRBool aIsSynchronous,
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PRBool aDoFlush,
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PRInt16 aVPercent = NS_PRESSHELL_SCROLL_ANYWHERE,
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PRInt16 aHPercent = NS_PRESSHELL_SCROLL_ANYWHERE);
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nsresult SubtractRange(RangeData* aRange, nsIRange* aSubtract,
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nsTArray<RangeData>* aOutput);
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nsresult AddItem(nsIRange *aRange, PRInt32* aOutIndex = nsnull);
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nsresult RemoveItem(nsIRange *aRange);
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nsresult RemoveCollapsedRanges();
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nsresult Clear(nsPresContext* aPresContext);
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nsresult Collapse(nsINode* aParentNode, PRInt32 aOffset);
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nsresult Extend(nsINode* aParentNode, PRInt32 aOffset);
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nsresult AddRange(nsIRange* aRange);
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// The nsIRange version of RemoveRange assumes the caller is holding
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// a strong reference to aRange.
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nsresult RemoveRange(nsIRange* aRange);
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nsIRange* GetRangeAt(PRInt32 aIndex);
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nsresult GetTableSelectionType(nsIRange* aRange,
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PRInt32* aTableSelectionType);
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// methods for convenience. Note, these don't addref
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nsINode* GetAnchorNode();
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PRInt32 GetAnchorOffset();
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nsINode* GetFocusNode();
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PRInt32 GetFocusOffset();
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// Get the anchor-to-focus range if we don't care which end is
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// anchor and which end is focus.
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const nsIRange* GetAnchorFocusRange() const {
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return mAnchorFocusRange;
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}
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nsDirection GetDirection(){return mDirection;}
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void SetDirection(nsDirection aDir){mDirection = aDir;}
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nsresult CopyRangeToAnchorFocus(nsIRange *aRange);
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void ReplaceAnchorFocusRange(nsIRange *aRange);
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// NS_IMETHOD GetPrimaryFrameForRangeEndpoint(nsIDOMNode *aNode, PRInt32 aOffset, PRBool aIsEndNode, nsIFrame **aResultFrame);
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NS_IMETHOD GetPrimaryFrameForAnchorNode(nsIFrame **aResultFrame);
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NS_IMETHOD GetPrimaryFrameForFocusNode(nsIFrame **aResultFrame, PRInt32 *aOffset, PRBool aVisual);
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NS_IMETHOD LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset, PRInt32 aContentLength,
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SelectionDetails **aReturnDetails, SelectionType aType, PRBool aSlowCheck);
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NS_IMETHOD Repaint(nsPresContext* aPresContext);
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// Note: StartAutoScrollTimer might destroy arbitrary frames etc.
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nsresult StartAutoScrollTimer(nsIFrame *aFrame,
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nsPoint& aPoint,
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PRUint32 aDelay);
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nsresult StopAutoScrollTimer();
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private:
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friend class nsAutoScrollTimer;
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// Note: DoAutoScroll might destroy arbitrary frames etc.
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nsresult DoAutoScroll(nsIFrame *aFrame, nsPoint& aPoint);
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public:
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SelectionType GetType(){return mType;}
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void SetType(SelectionType aType){mType = aType;}
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nsresult NotifySelectionListeners();
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private:
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friend class nsSelectionIterator;
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class ScrollSelectionIntoViewEvent;
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friend class ScrollSelectionIntoViewEvent;
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class ScrollSelectionIntoViewEvent : public nsRunnable {
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public:
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NS_DECL_NSIRUNNABLE
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ScrollSelectionIntoViewEvent(nsTypedSelection *aTypedSelection,
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SelectionRegion aRegion)
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: mTypedSelection(aTypedSelection),
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mRegion(aRegion) {
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NS_ASSERTION(aTypedSelection, "null parameter");
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}
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void Revoke() { mTypedSelection = nsnull; }
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private:
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nsTypedSelection *mTypedSelection;
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SelectionRegion mRegion;
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};
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void setAnchorFocusRange(PRInt32 aIndex); // pass in index into mRanges;
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// negative value clears
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// mAnchorFocusRange
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nsresult SelectAllFramesForContent(nsIContentIterator *aInnerIter,
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nsIContent *aContent,
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PRBool aSelected);
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nsresult selectFrames(nsPresContext* aPresContext, nsIRange *aRange, PRBool aSelect);
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nsresult getTableCellLocationFromRange(nsIRange *aRange, PRInt32 *aSelectionType, PRInt32 *aRow, PRInt32 *aCol);
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nsresult addTableCellRange(nsIRange *aRange, PRBool *aDidAddRange, PRInt32 *aOutIndex);
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nsresult FindInsertionPoint(
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nsTArray<RangeData>* aElementArray,
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nsINode* aPointNode, PRInt32 aPointOffset,
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nsresult (*aComparator)(nsINode*,PRInt32,nsIRange*,PRInt32*),
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PRInt32* aPoint);
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PRBool EqualsRangeAtPoint(nsINode* aBeginNode, PRInt32 aBeginOffset,
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nsINode* aEndNode, PRInt32 aEndOffset,
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PRInt32 aRangeIndex);
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nsresult GetRangesForIntervalCOMArray(nsINode* aBeginNode, PRInt32 aBeginOffset,
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nsINode* aEndNode, PRInt32 aEndOffset,
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PRBool aAllowAdjacent,
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nsCOMArray<nsIRange>* aRanges);
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void GetIndicesForInterval(nsINode* aBeginNode, PRInt32 aBeginOffset,
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nsINode* aEndNode, PRInt32 aEndOffset,
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PRBool aAllowAdjacent,
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PRInt32 *aStartIndex, PRInt32 *aEndIndex);
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RangeData* FindRangeData(nsIDOMRange* aRange);
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// These are the ranges inside this selection. They are kept sorted in order
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// of DOM start position.
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//
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// This data structure is sorted by the range beginnings. As the ranges are
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// disjoint, it is also implicitly sorted by the range endings. This allows
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// us to perform binary searches when searching for existence of a range,
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// giving us O(log n) search time.
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//
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// Inserting a new range requires finding the overlapping interval, requiring
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// two binary searches plus up to an additional 6 DOM comparisons. If this
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// proves to be a performance concern, then an interval tree may be a
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// possible solution, allowing the calculation of the overlap interval in
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// O(log n) time, though this would require rebalancing and other overhead.
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nsTArray<RangeData> mRanges;
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nsCOMPtr<nsIRange> mAnchorFocusRange;
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nsRefPtr<nsFrameSelection> mFrameSelection;
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nsWeakPtr mPresShellWeak;
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nsRefPtr<nsAutoScrollTimer> mAutoScrollTimer;
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nsCOMArray<nsISelectionListener> mSelectionListeners;
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nsRevocableEventPtr<ScrollSelectionIntoViewEvent> mScrollEvent;
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CachedOffsetForFrame *mCachedOffsetForFrame;
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nsDirection mDirection;
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SelectionType mType;
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};
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// Stack-class to turn on/off selection batching for table selection
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class NS_STACK_CLASS NS_FINAL_CLASS nsSelectionBatcher
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{
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private:
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nsCOMPtr<nsISelectionPrivate> mSelection;
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public:
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nsSelectionBatcher(nsISelectionPrivate *aSelection) : mSelection(aSelection)
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{
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if (mSelection) mSelection->StartBatchChanges();
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}
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~nsSelectionBatcher()
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{
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if (mSelection) mSelection->EndBatchChanges();
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}
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};
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class nsSelectionIterator : 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_DECL_NSIENUMERATOR
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NS_DECL_NSIBIDIRECTIONALENUMERATOR
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/*END nsIEnumerator interfaces*/
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/*BEGIN Helper Methods*/
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nsIRange* CurrentItem();
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/*END Helper Methods*/
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private:
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friend class nsTypedSelection;
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//lame lame lame if delete from document goes away then get rid of this unless its debug
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friend class nsFrameSelection;
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nsSelectionIterator(nsTypedSelection *);
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virtual ~nsSelectionIterator();
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PRInt32 mIndex;
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nsTypedSelection *mDomSelection;
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SelectionType mType;
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};
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class nsAutoScrollTimer : public nsITimerCallback
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{
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public:
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NS_DECL_ISUPPORTS
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nsAutoScrollTimer()
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: mFrameSelection(0), mSelection(0), mPresContext(0), mPoint(0,0), mDelay(30)
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{
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}
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virtual ~nsAutoScrollTimer()
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{
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if (mTimer)
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mTimer->Cancel();
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}
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// aPoint is relative to aPresContext's root frame
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nsresult Start(nsPresContext *aPresContext, nsPoint &aPoint)
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{
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mPoint = aPoint;
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// Store the presentation context. The timer will be
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// stopped by the selection if the prescontext is destroyed.
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mPresContext = aPresContext;
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mContent = nsIPresShell::GetCapturingContent();
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if (!mTimer)
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{
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nsresult result;
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mTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
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if (NS_FAILED(result))
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return result;
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}
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return mTimer->InitWithCallback(this, mDelay, nsITimer::TYPE_ONE_SHOT);
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}
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nsresult Stop()
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{
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if (mTimer)
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{
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mTimer->Cancel();
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mTimer = 0;
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}
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mContent = nsnull;
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return NS_OK;
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}
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nsresult Init(nsFrameSelection *aFrameSelection, nsTypedSelection *aSelection)
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{
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mFrameSelection = aFrameSelection;
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mSelection = aSelection;
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return NS_OK;
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}
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nsresult SetDelay(PRUint32 aDelay)
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{
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mDelay = aDelay;
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return NS_OK;
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}
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NS_IMETHOD Notify(nsITimer *timer)
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{
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if (mSelection && mPresContext)
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{
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nsWeakFrame frame =
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mContent ? mPresContext->GetPrimaryFrameFor(mContent) : nsnull;
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mContent = nsnull;
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mFrameSelection->HandleDrag(frame, mPoint);
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if (!frame.IsAlive())
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return NS_OK;
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nsPoint pt = mPoint -
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frame->GetOffsetTo(mPresContext->PresShell()->FrameManager()->GetRootFrame());
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mSelection->DoAutoScroll(frame, pt);
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}
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return NS_OK;
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}
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private:
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nsFrameSelection *mFrameSelection;
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nsTypedSelection *mSelection;
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nsPresContext *mPresContext;
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// relative to mPresContext's root frame
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nsPoint mPoint;
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nsCOMPtr<nsITimer> mTimer;
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nsCOMPtr<nsIContent> mContent;
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PRUint32 mDelay;
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};
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NS_IMPL_ISUPPORTS1(nsAutoScrollTimer, nsITimerCallback)
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nsresult NS_NewSelection(nsFrameSelection **aFrameSelection)
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{
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nsFrameSelection *rlist = new nsFrameSelection;
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if (!rlist)
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return NS_ERROR_OUT_OF_MEMORY;
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*aFrameSelection = rlist;
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NS_ADDREF(rlist);
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return NS_OK;
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}
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nsresult NS_NewDomSelection(nsISelection **aDomSelection)
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{
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nsTypedSelection *rlist = new nsTypedSelection;
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if (!rlist)
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return NS_ERROR_OUT_OF_MEMORY;
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*aDomSelection = (nsISelection *)rlist;
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NS_ADDREF(rlist);
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return NS_OK;
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}
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|
|
|
static 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;
|
|
case nsISelectionController::SELECTION_ACCESSIBILITY: return 6; break;
|
|
case nsISelectionController::SELECTION_FIND: return 7; break;
|
|
default:
|
|
return -1; break;
|
|
}
|
|
/* NOTREACHED */
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
case 6: return nsISelectionController::SELECTION_ACCESSIBILITY; break;
|
|
case 7: return nsISelectionController::SELECTION_FIND; break;
|
|
default:
|
|
return nsISelectionController::SELECTION_NORMAL; break;
|
|
}
|
|
/* NOTREACHED */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
The limiter is used specifically for the text areas and textfields
|
|
In that case it is the DIV tag that is anonymously created for the text
|
|
areas/fields. Text nodes and BR nodes fall beneath it. In the case of a
|
|
BR node the limiter will be the parent and the offset will point before or
|
|
after the BR node. In the case of the text node the parent content is
|
|
the text node itself and the offset will be the exact character position.
|
|
The offset is not important to check for validity. Simply look at the
|
|
passed in content. If it equals the limiter then the selection point is valid.
|
|
If its parent it the limiter then the point is also valid. In the case of
|
|
NO limiter all points are valid since you are in a topmost iframe. (browser
|
|
or composer)
|
|
*/
|
|
PRBool
|
|
IsValidSelectionPoint(nsFrameSelection *aFrameSel, nsINode *aNode)
|
|
{
|
|
if (!aFrameSel || !aNode)
|
|
return PR_FALSE;
|
|
|
|
nsIContent *limiter = aFrameSel->GetLimiter();
|
|
if (limiter && limiter != aNode && limiter != aNode->GetParent()) {
|
|
//if newfocus == the limiter. that's ok. but if not there and not parent bad
|
|
return PR_FALSE; //not in the right content. tLimiter said so
|
|
}
|
|
|
|
limiter = aFrameSel->GetAncestorLimiter();
|
|
return !limiter || nsContentUtils::ContentIsDescendantOf(aNode, limiter);
|
|
}
|
|
|
|
|
|
NS_IMPL_ADDREF(nsSelectionIterator)
|
|
NS_IMPL_RELEASE(nsSelectionIterator)
|
|
|
|
NS_INTERFACE_MAP_BEGIN(nsSelectionIterator)
|
|
NS_INTERFACE_MAP_ENTRY(nsIEnumerator)
|
|
NS_INTERFACE_MAP_ENTRY(nsIBidirectionalEnumerator)
|
|
NS_INTERFACE_MAP_END_AGGREGATED(mDomSelection)
|
|
|
|
|
|
///////////BEGIN nsSelectionIterator methods
|
|
|
|
nsSelectionIterator::nsSelectionIterator(nsTypedSelection *aList)
|
|
:mIndex(0)
|
|
{
|
|
if (!aList)
|
|
{
|
|
NS_NOTREACHED("nsFrameSelection");
|
|
return;
|
|
}
|
|
mDomSelection = aList;
|
|
}
|
|
|
|
|
|
|
|
nsSelectionIterator::~nsSelectionIterator()
|
|
{
|
|
}
|
|
|
|
|
|
|
|
////////////END nsSelectionIterator methods
|
|
|
|
////////////BEGIN nsSelectionIterator methods
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsSelectionIterator::Next()
|
|
{
|
|
mIndex++;
|
|
PRInt32 cnt = mDomSelection->mRanges.Length();
|
|
if (mIndex < 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;
|
|
mIndex = mDomSelection->mRanges.Length() - 1;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsSelectionIterator::CurrentItem(nsISupports **aItem)
|
|
{
|
|
*aItem = CurrentItem();
|
|
if (!*aItem) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_ADDREF(*aItem);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIRange*
|
|
nsSelectionIterator::CurrentItem()
|
|
{
|
|
return mDomSelection->mRanges.SafeElementAt(mIndex, sEmptyData).mRange;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsSelectionIterator::IsDone()
|
|
{
|
|
PRInt32 cnt = mDomSelection->mRanges.Length();
|
|
if (mIndex >= 0 && mIndex < cnt) {
|
|
return NS_ENUMERATOR_FALSE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
////////////END nsSelectionIterator methods
|
|
|
|
|
|
////////////BEGIN nsFrameSelection methods
|
|
|
|
nsFrameSelection::nsFrameSelection()
|
|
: mDelayedMouseEvent(PR_FALSE, 0, nsnull, nsMouseEvent::eReal)
|
|
{
|
|
PRInt32 i;
|
|
for (i = 0;i<nsISelectionController::NUM_SELECTIONTYPES;i++){
|
|
mDomSelections[i] = new nsTypedSelection(this);
|
|
if (!mDomSelections[i])
|
|
break;
|
|
mDomSelections[i]->SetType(GetSelectionTypeFromIndex(i));
|
|
}
|
|
mBatching = 0;
|
|
mChangesDuringBatching = PR_FALSE;
|
|
mNotifyFrames = PR_TRUE;
|
|
mLimiter = nsnull; //no default limiter.
|
|
mAncestorLimiter = nsnull;
|
|
|
|
mMouseDoubleDownState = PR_FALSE;
|
|
|
|
mHint = HINTLEFT;
|
|
#ifdef IBMBIDI
|
|
mCaretBidiLevel = BIDI_LEVEL_UNDEFINED;
|
|
#endif
|
|
mDragSelectingCells = PR_FALSE;
|
|
mSelectingTableCellMode = 0;
|
|
mSelectedCellIndex = 0;
|
|
|
|
// Check to see if the autocopy pref is enabled
|
|
// and add the autocopy listener if it is
|
|
if (nsContentUtils::GetBoolPref("clipboard.autocopy")) {
|
|
nsAutoCopyListener *autoCopy = nsAutoCopyListener::GetInstance();
|
|
|
|
if (autoCopy) {
|
|
PRInt8 index =
|
|
GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (mDomSelections[index]) {
|
|
autoCopy->Listen(mDomSelections[index]);
|
|
}
|
|
}
|
|
}
|
|
|
|
mDisplaySelection = nsISelectionController::SELECTION_OFF;
|
|
|
|
mDelayedMouseEventValid = PR_FALSE;
|
|
mSelectionChangeReason = nsISelectionListener::NO_REASON;
|
|
}
|
|
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(nsFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsFrameSelection)
|
|
PRInt32 i;
|
|
for (i = 0; i < nsISelectionController::NUM_SELECTIONTYPES; ++i) {
|
|
tmp->mDomSelections[i] = nsnull;
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mCellParent)
|
|
tmp->mSelectingTableCellMode = 0;
|
|
tmp->mDragSelectingCells = PR_FALSE;
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mEndSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mAppendStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mUnselectCellOnMouseUp)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mMaintainRange)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFrameSelection)
|
|
PRInt32 i;
|
|
for (i = 0; i < nsISelectionController::NUM_SELECTIONTYPES; ++i) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mDomSelections[i],
|
|
nsISelection)
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mCellParent)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mEndSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mAppendStartSelectedCell)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mUnselectCellOnMouseUp)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mMaintainRange)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFrameSelection)
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFrameSelection)
|
|
NS_INTERFACE_MAP_ENTRY(nsFrameSelection)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::FetchDesiredX(nscoord &aDesiredX) //the x position requested by the Key Handling for up down
|
|
{
|
|
if (!mShell)
|
|
{
|
|
NS_ERROR("fetch desired X failed\n");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (mDesiredXSet)
|
|
{
|
|
aDesiredX = mDesiredX;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsRefPtr<nsCaret> caret = mShell->GetCaret();
|
|
if (!caret)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
nsresult result = caret->SetCaretDOMSelection(mDomSelections[index]);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
nsRect coord;
|
|
nsIFrame* caretFrame = caret->GetGeometry(mDomSelections[index], &coord);
|
|
if (!caretFrame)
|
|
return NS_ERROR_FAILURE;
|
|
nsPoint viewOffset(0, 0);
|
|
nsIView* view = nsnull;
|
|
caretFrame->GetOffsetFromView(viewOffset, &view);
|
|
if (view)
|
|
coord.x += viewOffset.x;
|
|
|
|
aDesiredX = coord.x;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
nsFrameSelection::InvalidateDesiredX() //do not listen to mDesiredX you must get another.
|
|
{
|
|
mDesiredXSet = PR_FALSE;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
nsFrameSelection::SetDesiredX(nscoord aX) //set the mDesiredX
|
|
{
|
|
mDesiredX = aX;
|
|
mDesiredXSet = PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::ConstrainFrameAndPointToAnchorSubtree(nsIFrame *aFrame,
|
|
nsPoint& aPoint,
|
|
nsIFrame **aRetFrame,
|
|
nsPoint& aRetPoint)
|
|
{
|
|
//
|
|
// The whole point of this method is to return a frame and point that
|
|
// that lie within the same valid subtree as the anchor node's frame,
|
|
// for use with the method GetContentAndOffsetsFromPoint().
|
|
//
|
|
// A valid subtree is defined to be one where all the content nodes in
|
|
// the tree have a valid parent-child relationship.
|
|
//
|
|
// If the anchor frame and aFrame are in the same subtree, aFrame will
|
|
// be returned in aRetFrame. If they are in different subtrees, we
|
|
// return the frame for the root of the subtree.
|
|
//
|
|
|
|
if (!aFrame || !aRetFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aRetFrame = aFrame;
|
|
aRetPoint = aPoint;
|
|
|
|
//
|
|
// Get the frame and content for the selection's anchor point!
|
|
//
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIDOMNode> anchorNode;
|
|
PRInt32 anchorOffset = 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;
|
|
|
|
nsCOMPtr<nsIContent> anchorContent = do_QueryInterface(anchorNode);
|
|
|
|
if (!anchorContent)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//
|
|
// Now find the root of the subtree containing the anchor's content.
|
|
//
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
nsIContent* anchorRoot = anchorContent->GetSelectionRootContent(mShell);
|
|
NS_ENSURE_TRUE(anchorRoot, NS_ERROR_UNEXPECTED);
|
|
|
|
//
|
|
// Now find the root of the subtree containing aFrame's content.
|
|
//
|
|
|
|
nsIContent* content = aFrame->GetContent();
|
|
|
|
if (content)
|
|
{
|
|
nsIContent* contentRoot = content->GetSelectionRootContent(mShell);
|
|
NS_ENSURE_TRUE(contentRoot, NS_ERROR_UNEXPECTED);
|
|
|
|
if (anchorRoot == contentRoot)
|
|
{
|
|
// If the aFrame's content isn't the capturing content, it should be
|
|
// a descendant. At this time, we can return simply.
|
|
nsIContent* capturedContent = nsIPresShell::GetCapturingContent();
|
|
if (capturedContent != content)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
// Find the frame under the mouse cursor with the root frame.
|
|
// At this time, don't use the anchor's frame because it may not have
|
|
// fixed positioned frames.
|
|
nsIFrame* rootFrame = mShell->FrameManager()->GetRootFrame();
|
|
nsPoint ptInRoot = aPoint + aFrame->GetOffsetTo(rootFrame);
|
|
nsIFrame* cursorFrame =
|
|
nsLayoutUtils::GetFrameForPoint(rootFrame, ptInRoot);
|
|
|
|
// If the mouse cursor in on a frame which is descendant of same
|
|
// selection root, we can expand the selection to the frame.
|
|
if (cursorFrame && cursorFrame->PresContext()->PresShell() == mShell)
|
|
{
|
|
nsIContent* cursorContent = cursorFrame->GetContent();
|
|
NS_ENSURE_TRUE(cursorContent, NS_ERROR_FAILURE);
|
|
nsIContent* cursorContentRoot =
|
|
cursorContent->GetSelectionRootContent(mShell);
|
|
NS_ENSURE_TRUE(cursorContentRoot, NS_ERROR_UNEXPECTED);
|
|
if (cursorContentRoot == anchorRoot)
|
|
{
|
|
*aRetFrame = cursorFrame;
|
|
aRetPoint = aPoint + aFrame->GetOffsetTo(cursorFrame);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
// Otherwise, e.g., the cursor isn't on any frames (e.g., the mouse
|
|
// cursor is out of the window), we should use the frame of the anchor
|
|
// root.
|
|
}
|
|
}
|
|
|
|
//
|
|
// When we can't find a frame which is under the mouse cursor and has a same
|
|
// selection root as the anchor node's, we should return the selection root
|
|
// frame.
|
|
//
|
|
|
|
*aRetFrame = anchorRoot->GetPrimaryFrame();
|
|
|
|
if (!*aRetFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//
|
|
// Now make sure that aRetPoint is converted to the same coordinate
|
|
// system used by aRetFrame.
|
|
//
|
|
|
|
aRetPoint = aPoint + aFrame->GetOffsetTo(*aRetFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
void
|
|
nsFrameSelection::SetCaretBidiLevel(PRUint8 aLevel)
|
|
{
|
|
// If the current level is undefined, we have just inserted new text.
|
|
// In this case, we don't want to reset the keyboard language
|
|
PRBool afterInsert = !!(mCaretBidiLevel & BIDI_LEVEL_UNDEFINED);
|
|
mCaretBidiLevel = aLevel;
|
|
|
|
nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
|
|
if (bidiKeyboard && !afterInsert)
|
|
bidiKeyboard->SetLangFromBidiLevel(aLevel);
|
|
return;
|
|
}
|
|
|
|
PRUint8
|
|
nsFrameSelection::GetCaretBidiLevel() const
|
|
{
|
|
return mCaretBidiLevel;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::UndefineCaretBidiLevel()
|
|
{
|
|
mCaretBidiLevel |= BIDI_LEVEL_UNDEFINED;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef PRINT_RANGE
|
|
void printRange(nsIRange *aDomRange)
|
|
{
|
|
if (!aDomRange)
|
|
{
|
|
printf("NULL nsIDOMRange\n");
|
|
}
|
|
nsINode* startNode = aDomRange->GetStartParent();
|
|
nsINode* endNode = aDomRange->GetEndParent();
|
|
PRInt32 startOffset = aDomRange->StartOffset();
|
|
PRInt32 endOffset = aDomRange->EndOffset();
|
|
|
|
printf("range: 0x%lx\t start: 0x%lx %ld, \t end: 0x%lx,%ld\n",
|
|
(unsigned long)aDomRange,
|
|
(unsigned long)startNode, (long)startOffset,
|
|
(unsigned long)endNode, (long)endOffset);
|
|
|
|
}
|
|
#endif /* PRINT_RANGE */
|
|
|
|
static
|
|
nsIAtom *GetTag(nsINode *aNode)
|
|
{
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
if (!content)
|
|
{
|
|
NS_NOTREACHED("bad node passed to GetTag()");
|
|
return nsnull;
|
|
}
|
|
|
|
return content->Tag();
|
|
}
|
|
|
|
// Returns the parent
|
|
nsINode*
|
|
ParentOffset(nsINode *aNode, PRInt32 *aChildOffset)
|
|
{
|
|
if (!aNode || !aChildOffset)
|
|
return nsnull;
|
|
|
|
nsIContent* parent = aNode->GetParent();
|
|
if (parent)
|
|
{
|
|
*aChildOffset = parent->IndexOf(aNode);
|
|
|
|
return parent;
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
static nsINode*
|
|
GetCellParent(nsINode *aDomNode)
|
|
{
|
|
if (!aDomNode)
|
|
return nsnull;
|
|
nsINode* current = aDomNode;
|
|
// Start with current node and look for a table cell
|
|
while (current)
|
|
{
|
|
nsIAtom* tag = GetTag(current);
|
|
if (tag == nsGkAtoms::td || tag == nsGkAtoms::th)
|
|
return current;
|
|
current = current->GetParent();
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
|
|
void
|
|
nsFrameSelection::Init(nsIPresShell *aShell, nsIContent *aLimiter)
|
|
{
|
|
mShell = aShell;
|
|
mMouseDownState = PR_FALSE;
|
|
mDesiredXSet = PR_FALSE;
|
|
mLimiter = aLimiter;
|
|
mCaretMovementStyle = nsContentUtils::GetIntPref("bidi.edit.caret_movement_style", 2);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::MoveCaret(PRUint32 aKeycode,
|
|
PRBool aContinueSelection,
|
|
nsSelectionAmount aAmount)
|
|
{
|
|
PRBool visualMovement =
|
|
(aKeycode == nsIDOMKeyEvent::DOM_VK_BACK_SPACE ||
|
|
aKeycode == nsIDOMKeyEvent::DOM_VK_DELETE ||
|
|
aKeycode == nsIDOMKeyEvent::DOM_VK_HOME ||
|
|
aKeycode == nsIDOMKeyEvent::DOM_VK_END) ?
|
|
PR_FALSE : // Delete operations and home/end are always logical
|
|
mCaretMovementStyle == 1 ||
|
|
(mCaretMovementStyle == 2 && !aContinueSelection);
|
|
|
|
return MoveCaret(aKeycode, aContinueSelection, aAmount, visualMovement);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::MoveCaret(PRUint32 aKeycode,
|
|
PRBool aContinueSelection,
|
|
nsSelectionAmount aAmount,
|
|
PRBool aVisualMovement)
|
|
{
|
|
NS_ENSURE_STATE(mShell);
|
|
// Flush out layout, since we need it to be up to date to do caret
|
|
// positioning.
|
|
mShell->FlushPendingNotifications(Flush_Layout);
|
|
|
|
if (!mShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext *context = mShell->GetPresContext();
|
|
if (!context)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
PRBool isCollapsed;
|
|
nscoord desiredX = 0; //we must keep this around and revalidate it when its just UP/DOWN
|
|
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
nsRefPtr<nsTypedSelection> sel = mDomSelections[index];
|
|
if (!sel)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result = sel->GetIsCollapsed(&isCollapsed);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
if (aKeycode == nsIDOMKeyEvent::DOM_VK_UP ||
|
|
aKeycode == nsIDOMKeyEvent::DOM_VK_DOWN)
|
|
{
|
|
result = FetchDesiredX(desiredX);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
SetDesiredX(desiredX);
|
|
}
|
|
|
|
PRInt32 caretStyle = nsContentUtils::GetIntPref("layout.selection.caret_style", 0);
|
|
#ifdef XP_MACOSX
|
|
if (caretStyle == 0) {
|
|
caretStyle = 2; // put caret at the selection edge in the |aKeycode| direction
|
|
}
|
|
#endif
|
|
|
|
if (!isCollapsed && !aContinueSelection && caretStyle == 2) {
|
|
switch (aKeycode){
|
|
case nsIDOMKeyEvent::DOM_VK_LEFT :
|
|
case nsIDOMKeyEvent::DOM_VK_UP :
|
|
{
|
|
const nsIRange* anchorFocusRange = sel->GetAnchorFocusRange();
|
|
if (anchorFocusRange) {
|
|
sel->Collapse(anchorFocusRange->GetStartParent(),
|
|
anchorFocusRange->StartOffset());
|
|
}
|
|
mHint = HINTRIGHT;
|
|
sel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
PR_FALSE, PR_FALSE);
|
|
return NS_OK;
|
|
}
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_RIGHT :
|
|
case nsIDOMKeyEvent::DOM_VK_DOWN :
|
|
{
|
|
const nsIRange* anchorFocusRange = sel->GetAnchorFocusRange();
|
|
if (anchorFocusRange) {
|
|
sel->Collapse(anchorFocusRange->GetEndParent(),
|
|
anchorFocusRange->EndOffset());
|
|
}
|
|
mHint = HINTLEFT;
|
|
sel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
PR_FALSE, PR_FALSE);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsIFrame *frame;
|
|
PRInt32 offsetused = 0;
|
|
result = sel->GetPrimaryFrameForFocusNode(&frame, &offsetused,
|
|
aVisualMovement);
|
|
|
|
if (NS_FAILED(result) || !frame)
|
|
return result?result:NS_ERROR_FAILURE;
|
|
|
|
nsPeekOffsetStruct pos;
|
|
//set data using mLimiter to stop on scroll views. If we have a limiter then we stop peeking
|
|
//when we hit scrollable views. If no limiter then just let it go ahead
|
|
pos.SetData(aAmount, eDirPrevious, offsetused, desiredX,
|
|
PR_TRUE, mLimiter != nsnull, PR_TRUE, aVisualMovement);
|
|
|
|
nsBidiLevel baseLevel = nsBidiPresUtils::GetFrameBaseLevel(frame);
|
|
|
|
HINT tHint(mHint); //temporary variable so we dont set mHint until it is necessary
|
|
switch (aKeycode){
|
|
case nsIDOMKeyEvent::DOM_VK_RIGHT :
|
|
InvalidateDesiredX();
|
|
pos.mDirection = (baseLevel & 1) ? eDirPrevious : eDirNext;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_LEFT :
|
|
InvalidateDesiredX();
|
|
pos.mDirection = (baseLevel & 1) ? eDirNext : eDirPrevious;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_DELETE :
|
|
InvalidateDesiredX();
|
|
pos.mDirection = eDirNext;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_BACK_SPACE :
|
|
InvalidateDesiredX();
|
|
pos.mDirection = eDirPrevious;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_DOWN :
|
|
pos.mAmount = eSelectLine;
|
|
pos.mDirection = eDirNext;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_UP :
|
|
pos.mAmount = eSelectLine;
|
|
pos.mDirection = eDirPrevious;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_HOME :
|
|
InvalidateDesiredX();
|
|
pos.mAmount = eSelectBeginLine;
|
|
break;
|
|
case nsIDOMKeyEvent::DOM_VK_END :
|
|
InvalidateDesiredX();
|
|
pos.mAmount = eSelectEndLine;
|
|
break;
|
|
default :return NS_ERROR_FAILURE;
|
|
}
|
|
PostReason(nsISelectionListener::KEYPRESS_REASON);
|
|
if (NS_SUCCEEDED(result = frame->PeekOffset(&pos)) && pos.mResultContent)
|
|
{
|
|
nsIFrame *theFrame;
|
|
PRInt32 currentOffset, frameStart, frameEnd;
|
|
|
|
if (aAmount == eSelectCharacter || aAmount == eSelectWord)
|
|
{
|
|
// For left/right, PeekOffset() sets pos.mResultFrame correctly, but does not set pos.mAttachForward,
|
|
// so determine the hint here based on the result frame and offset:
|
|
// If we're at the end of a text frame, set the hint to HINTLEFT to indicate that we
|
|
// want the caret displayed at the end of this frame, not at the beginning of the next one.
|
|
theFrame = pos.mResultFrame;
|
|
theFrame->GetOffsets(frameStart, frameEnd);
|
|
currentOffset = pos.mContentOffset;
|
|
if (frameEnd == currentOffset && !(frameStart == 0 && frameEnd == 0))
|
|
tHint = HINTLEFT;
|
|
else
|
|
tHint = HINTRIGHT;
|
|
} else {
|
|
// For up/down and home/end, pos.mResultFrame might not be set correctly, or not at all.
|
|
// In these cases, get the frame based on the content and hint returned by PeekOffset().
|
|
tHint = (HINT)pos.mAttachForward;
|
|
theFrame = GetFrameForNodeOffset(pos.mResultContent, pos.mContentOffset,
|
|
tHint, ¤tOffset);
|
|
if (!theFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
theFrame->GetOffsets(frameStart, frameEnd);
|
|
}
|
|
|
|
if (context->BidiEnabled())
|
|
{
|
|
switch (aKeycode) {
|
|
case nsIDOMKeyEvent::DOM_VK_HOME:
|
|
case nsIDOMKeyEvent::DOM_VK_END:
|
|
// set the caret Bidi level to the paragraph embedding level
|
|
SetCaretBidiLevel(NS_GET_BASE_LEVEL(theFrame));
|
|
break;
|
|
|
|
default:
|
|
// If the current position is not a frame boundary, it's enough just to take the Bidi level of the current frame
|
|
if ((pos.mContentOffset != frameStart && pos.mContentOffset != frameEnd)
|
|
|| (eSelectLine == aAmount))
|
|
{
|
|
SetCaretBidiLevel(NS_GET_EMBEDDING_LEVEL(theFrame));
|
|
}
|
|
else
|
|
BidiLevelFromMove(mShell, pos.mResultContent, pos.mContentOffset, aKeycode, tHint);
|
|
}
|
|
}
|
|
result = TakeFocus(pos.mResultContent, pos.mContentOffset, pos.mContentOffset,
|
|
tHint, aContinueSelection, PR_FALSE);
|
|
} else if (aKeycode == nsIDOMKeyEvent::DOM_VK_RIGHT && !aContinueSelection) {
|
|
// Collapse selection if PeekOffset failed, we either
|
|
// 1. bumped into the BRFrame, bug 207623
|
|
// 2. had select-all in a text input (DIV range), bug 352759.
|
|
PRBool isBRFrame = frame->GetType() == nsGkAtoms::brFrame;
|
|
sel->Collapse(sel->GetFocusNode(), sel->GetFocusOffset());
|
|
// Note: 'frame' might be dead here.
|
|
if (!isBRFrame) {
|
|
mHint = HINTLEFT; // We're now at the end of the frame to the left.
|
|
}
|
|
result = NS_OK;
|
|
}
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = mDomSelections[index]->
|
|
ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
|
|
PR_FALSE, PR_FALSE);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//END nsFrameSelection methods
|
|
|
|
|
|
//BEGIN nsFrameSelection methods
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::ToString(PRUnichar **aReturn)
|
|
{
|
|
return ToStringWithFormat("text/plain", 0, 0, aReturn);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::ToStringWithFormat(const char * aFormatType, PRUint32 aFlags,
|
|
PRInt32 aWrapCol, PRUnichar **aReturn)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (!aReturn)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCAutoString formatType( NS_DOC_ENCODER_CONTRACTID_BASE );
|
|
formatType.Append(aFormatType);
|
|
nsCOMPtr<nsIDocumentEncoder> encoder =
|
|
do_CreateInstance(formatType.get(), &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
rv = GetPresShell(getter_AddRefs(shell));
|
|
if (NS_FAILED(rv) || !shell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsIDocument *doc = shell->GetDocument();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(doc);
|
|
NS_ASSERTION(domDoc, "Need a document");
|
|
|
|
// Flags should always include OutputSelectionOnly if we're coming from here:
|
|
aFlags |= nsIDocumentEncoder::OutputSelectionOnly;
|
|
nsAutoString readstring;
|
|
readstring.AssignASCII(aFormatType);
|
|
rv = encoder->Init(domDoc, readstring, aFlags);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
encoder->SetSelection(this);
|
|
if (aWrapCol != 0)
|
|
encoder->SetWrapColumn(aWrapCol);
|
|
|
|
nsAutoString tmp;
|
|
rv = encoder->EncodeToString(tmp);
|
|
*aReturn = ToNewUnicode(tmp);//get the unicode pointer from it. this is temporary
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SetInterlinePosition(PRBool aHintRight)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
nsFrameSelection::HINT hint;
|
|
if (aHintRight)
|
|
hint = nsFrameSelection::HINTRIGHT;
|
|
else
|
|
hint = nsFrameSelection::HINTLEFT;
|
|
mFrameSelection->SetHint(hint);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetInterlinePosition(PRBool *aHintRight)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
*aHintRight = (mFrameSelection->GetHint() == nsFrameSelection::HINTRIGHT);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPrevNextBidiLevels
|
|
nsFrameSelection::GetPrevNextBidiLevels(nsIContent *aNode,
|
|
PRUint32 aContentOffset,
|
|
PRBool aJumpLines) const
|
|
{
|
|
return GetPrevNextBidiLevels(aNode, aContentOffset, mHint, aJumpLines);
|
|
}
|
|
|
|
nsPrevNextBidiLevels
|
|
nsFrameSelection::GetPrevNextBidiLevels(nsIContent *aNode,
|
|
PRUint32 aContentOffset,
|
|
HINT aHint,
|
|
PRBool aJumpLines) const
|
|
{
|
|
// Get the level of the frames on each side
|
|
nsIFrame *currentFrame;
|
|
PRInt32 currentOffset;
|
|
PRInt32 frameStart, frameEnd;
|
|
nsDirection direction;
|
|
|
|
nsPrevNextBidiLevels levels;
|
|
levels.SetData(nsnull, nsnull, 0, 0);
|
|
|
|
currentFrame = GetFrameForNodeOffset(aNode, aContentOffset,
|
|
aHint, ¤tOffset);
|
|
if (!currentFrame)
|
|
return levels;
|
|
|
|
currentFrame->GetOffsets(frameStart, frameEnd);
|
|
|
|
if (0 == frameStart && 0 == frameEnd)
|
|
direction = eDirPrevious;
|
|
else if (frameStart == currentOffset)
|
|
direction = eDirPrevious;
|
|
else if (frameEnd == currentOffset)
|
|
direction = eDirNext;
|
|
else {
|
|
// we are neither at the beginning nor at the end of the frame, so we have no worries
|
|
levels.SetData(currentFrame, currentFrame,
|
|
NS_GET_EMBEDDING_LEVEL(currentFrame),
|
|
NS_GET_EMBEDDING_LEVEL(currentFrame));
|
|
return levels;
|
|
}
|
|
|
|
nsIFrame *newFrame;
|
|
PRInt32 offset;
|
|
PRBool jumpedLine;
|
|
nsresult rv = currentFrame->GetFrameFromDirection(direction, PR_FALSE,
|
|
aJumpLines, PR_TRUE,
|
|
&newFrame, &offset, &jumpedLine);
|
|
if (NS_FAILED(rv))
|
|
newFrame = nsnull;
|
|
|
|
PRUint8 baseLevel = NS_GET_BASE_LEVEL(currentFrame);
|
|
PRUint8 currentLevel = NS_GET_EMBEDDING_LEVEL(currentFrame);
|
|
PRUint8 newLevel = newFrame ? NS_GET_EMBEDDING_LEVEL(newFrame) : baseLevel;
|
|
|
|
// If not jumping lines, disregard br frames, since they might be positioned incorrectly.
|
|
// XXX This could be removed once bug 339786 is fixed.
|
|
if (!aJumpLines) {
|
|
if (currentFrame->GetType() == nsGkAtoms::brFrame) {
|
|
currentFrame = nsnull;
|
|
currentLevel = baseLevel;
|
|
}
|
|
if (newFrame && newFrame->GetType() == nsGkAtoms::brFrame) {
|
|
newFrame = nsnull;
|
|
newLevel = baseLevel;
|
|
}
|
|
}
|
|
|
|
if (direction == eDirNext)
|
|
levels.SetData(currentFrame, newFrame, currentLevel, newLevel);
|
|
else
|
|
levels.SetData(newFrame, currentFrame, newLevel, currentLevel);
|
|
|
|
return levels;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::GetFrameFromLevel(nsIFrame *aFrameIn,
|
|
nsDirection aDirection,
|
|
PRUint8 aBidiLevel,
|
|
nsIFrame **aFrameOut) const
|
|
{
|
|
NS_ENSURE_STATE(mShell);
|
|
PRUint8 foundLevel = 0;
|
|
nsIFrame *foundFrame = aFrameIn;
|
|
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
nsresult result;
|
|
nsCOMPtr<nsIFrameTraversal> trav(do_CreateInstance(kFrameTraversalCID,&result));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
result = trav->NewFrameTraversal(getter_AddRefs(frameTraversal),
|
|
mShell->GetPresContext(), aFrameIn,
|
|
eLeaf,
|
|
PR_FALSE, // aVisual
|
|
PR_FALSE, // aLockInScrollView
|
|
PR_FALSE // aFollowOOFs
|
|
);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
do {
|
|
*aFrameOut = foundFrame;
|
|
if (aDirection == eDirNext)
|
|
frameTraversal->Next();
|
|
else
|
|
frameTraversal->Prev();
|
|
|
|
foundFrame = frameTraversal->CurrentItem();
|
|
if (!foundFrame)
|
|
return NS_ERROR_FAILURE;
|
|
foundLevel = NS_GET_EMBEDDING_LEVEL(foundFrame);
|
|
|
|
} while (foundLevel > aBidiLevel);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::MaintainSelection(nsSelectionAmount aAmount)
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mMaintainedAmount = aAmount;
|
|
|
|
const nsIRange* anchorFocusRange =
|
|
mDomSelections[index]->GetAnchorFocusRange();
|
|
if (anchorFocusRange) {
|
|
return anchorFocusRange->CloneRange(getter_AddRefs(mMaintainRange));
|
|
}
|
|
|
|
mMaintainRange = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/** After moving the caret, its Bidi level is set according to the following rules:
|
|
*
|
|
* After moving over a character with left/right arrow, set to the Bidi level of the last moved over character.
|
|
* After Home and End, set to the paragraph embedding level.
|
|
* After up/down arrow, PageUp/Down, set to the lower level of the 2 surrounding characters.
|
|
* After mouse click, set to the level of the current frame.
|
|
*
|
|
* The following two methods use GetPrevNextBidiLevels to determine the new Bidi level.
|
|
* BidiLevelFromMove is called when the caret is moved in response to a keyboard event
|
|
*
|
|
* @param aPresShell is the presentation shell
|
|
* @param aNode is the content node
|
|
* @param aContentOffset is the new caret position, as an offset into aNode
|
|
* @param aKeycode is the keyboard event that moved the caret to the new position
|
|
* @param aHint is the hint indicating in what logical direction the caret moved
|
|
*/
|
|
void nsFrameSelection::BidiLevelFromMove(nsIPresShell* aPresShell,
|
|
nsIContent *aNode,
|
|
PRUint32 aContentOffset,
|
|
PRUint32 aKeycode,
|
|
HINT aHint)
|
|
{
|
|
switch (aKeycode) {
|
|
|
|
// Right and Left: the new cursor Bidi level is the level of the character moved over
|
|
case nsIDOMKeyEvent::DOM_VK_RIGHT:
|
|
case nsIDOMKeyEvent::DOM_VK_LEFT:
|
|
{
|
|
nsPrevNextBidiLevels levels = GetPrevNextBidiLevels(aNode, aContentOffset,
|
|
aHint, PR_FALSE);
|
|
|
|
if (HINTLEFT == aHint)
|
|
SetCaretBidiLevel(levels.mLevelBefore);
|
|
else
|
|
SetCaretBidiLevel(levels.mLevelAfter);
|
|
break;
|
|
}
|
|
/*
|
|
// Up and Down: the new cursor Bidi level is the smaller of the two surrounding characters
|
|
case nsIDOMKeyEvent::DOM_VK_UP:
|
|
case nsIDOMKeyEvent::DOM_VK_DOWN:
|
|
GetPrevNextBidiLevels(aContext, aNode, aContentOffset, &firstFrame, &secondFrame, &firstLevel, &secondLevel);
|
|
aPresShell->SetCaretBidiLevel(NS_MIN(firstLevel, secondLevel));
|
|
break;
|
|
*/
|
|
|
|
default:
|
|
UndefineCaretBidiLevel();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* BidiLevelFromClick is called when the caret is repositioned by clicking the mouse
|
|
*
|
|
* @param aNode is the content node
|
|
* @param aContentOffset is the new caret position, as an offset into aNode
|
|
*/
|
|
void nsFrameSelection::BidiLevelFromClick(nsIContent *aNode,
|
|
PRUint32 aContentOffset)
|
|
{
|
|
nsIFrame* clickInFrame=nsnull;
|
|
PRInt32 OffsetNotUsed;
|
|
|
|
clickInFrame = GetFrameForNodeOffset(aNode, aContentOffset, mHint, &OffsetNotUsed);
|
|
if (!clickInFrame)
|
|
return;
|
|
|
|
SetCaretBidiLevel(NS_GET_EMBEDDING_LEVEL(clickInFrame));
|
|
}
|
|
|
|
|
|
PRBool
|
|
nsFrameSelection::AdjustForMaintainedSelection(nsIContent *aContent,
|
|
PRInt32 aOffset)
|
|
{
|
|
if (!mMaintainRange)
|
|
return PR_FALSE;
|
|
|
|
if (!aContent) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return PR_FALSE;
|
|
|
|
nsINode* rangeStartNode = mMaintainRange->GetStartParent();
|
|
nsINode* rangeEndNode = mMaintainRange->GetEndParent();
|
|
PRInt32 rangeStartOffset = mMaintainRange->StartOffset();
|
|
PRInt32 rangeEndOffset = mMaintainRange->EndOffset();
|
|
|
|
PRInt32 relToStart =
|
|
nsContentUtils::ComparePoints(rangeStartNode, rangeStartOffset,
|
|
aContent, aOffset);
|
|
PRInt32 relToEnd =
|
|
nsContentUtils::ComparePoints(rangeEndNode, rangeEndOffset,
|
|
aContent, aOffset);
|
|
|
|
// If aContent/aOffset is inside the maintained selection, or if it is on the
|
|
// "anchor" side of the maintained selection, we need to do something.
|
|
if (relToStart < 0 && relToEnd > 0 ||
|
|
(relToStart > 0 &&
|
|
mDomSelections[index]->GetDirection() == eDirNext) ||
|
|
(relToEnd < 0 &&
|
|
mDomSelections[index]->GetDirection() == eDirPrevious)) {
|
|
// Set the current range to the maintained range.
|
|
mDomSelections[index]->ReplaceAnchorFocusRange(mMaintainRange);
|
|
if (relToStart < 0 && relToEnd > 0) {
|
|
// We're inside the maintained selection, just keep it selected.
|
|
return PR_TRUE;
|
|
}
|
|
// Reverse the direction of the selection so that the anchor will be on the
|
|
// far side of the maintained selection, relative to aContent/aOffset.
|
|
mDomSelections[index]->SetDirection(relToStart > 0 ? eDirPrevious : eDirNext);
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::HandleClick(nsIContent *aNewFocus,
|
|
PRUint32 aContentOffset,
|
|
PRUint32 aContentEndOffset,
|
|
PRBool aContinueSelection,
|
|
PRBool aMultipleSelection,
|
|
PRBool aHint)
|
|
{
|
|
if (!aNewFocus)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
InvalidateDesiredX();
|
|
|
|
if (!aContinueSelection) {
|
|
mMaintainRange = nsnull;
|
|
if (!IsValidSelectionPoint(this, aNewFocus)) {
|
|
mAncestorLimiter = nsnull;
|
|
}
|
|
}
|
|
|
|
// Don't take focus when dragging off of a table
|
|
if (!mDragSelectingCells)
|
|
{
|
|
BidiLevelFromClick(aNewFocus, aContentOffset);
|
|
PostReason(nsISelectionListener::MOUSEDOWN_REASON + nsISelectionListener::DRAG_REASON);
|
|
if (aContinueSelection &&
|
|
AdjustForMaintainedSelection(aNewFocus, aContentOffset))
|
|
return NS_OK; //shift clicked to maintained selection. rejected.
|
|
|
|
return TakeFocus(aNewFocus, aContentOffset, aContentEndOffset, HINT(aHint),
|
|
aContinueSelection, aMultipleSelection);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::HandleDrag(nsIFrame *aFrame, nsPoint aPoint)
|
|
{
|
|
if (!aFrame || !mShell)
|
|
return;
|
|
|
|
nsresult result;
|
|
nsIFrame *newFrame = 0;
|
|
nsPoint newPoint;
|
|
|
|
result = ConstrainFrameAndPointToAnchorSubtree(aFrame, aPoint, &newFrame, newPoint);
|
|
if (NS_FAILED(result))
|
|
return;
|
|
if (!newFrame)
|
|
return;
|
|
|
|
nsIFrame::ContentOffsets offsets =
|
|
newFrame->GetContentOffsetsFromPoint(newPoint);
|
|
if (!offsets.content)
|
|
return;
|
|
|
|
if ((newFrame->GetStateBits() & NS_FRAME_SELECTED_CONTENT) &&
|
|
AdjustForMaintainedSelection(offsets.content, offsets.offset))
|
|
return;
|
|
|
|
// Adjust offsets according to maintained amount
|
|
if (mMaintainRange &&
|
|
mMaintainedAmount != eSelectNoAmount) {
|
|
|
|
nsINode* rangenode = mMaintainRange->GetStartParent();
|
|
PRInt32 rangeOffset = mMaintainRange->StartOffset();
|
|
PRInt32 relativePosition =
|
|
nsContentUtils::ComparePoints(rangenode, rangeOffset,
|
|
offsets.content, offsets.offset);
|
|
|
|
nsDirection direction = relativePosition > 0 ? eDirPrevious : eDirNext;
|
|
nsSelectionAmount amount = mMaintainedAmount;
|
|
if (amount == eSelectBeginLine && direction == eDirNext)
|
|
amount = eSelectEndLine;
|
|
|
|
PRInt32 offset;
|
|
nsIFrame* frame = GetFrameForNodeOffset(offsets.content, offsets.offset, HINTRIGHT, &offset);
|
|
|
|
if (frame && amount == eSelectWord && direction == eDirPrevious) {
|
|
// To avoid selecting the previous word when at start of word,
|
|
// first move one character forward.
|
|
nsPeekOffsetStruct charPos;
|
|
charPos.SetData(eSelectCharacter, eDirNext, offset, 0,
|
|
PR_FALSE, mLimiter != nsnull, PR_FALSE, PR_FALSE);
|
|
if (NS_SUCCEEDED(frame->PeekOffset(&charPos))) {
|
|
frame = charPos.mResultFrame;
|
|
offset = charPos.mContentOffset;
|
|
}
|
|
}
|
|
|
|
nsPeekOffsetStruct pos;
|
|
pos.SetData(amount, direction, offset, 0,
|
|
PR_FALSE, mLimiter != nsnull, PR_FALSE, PR_FALSE);
|
|
|
|
if (frame && NS_SUCCEEDED(frame->PeekOffset(&pos)) && pos.mResultContent) {
|
|
offsets.content = pos.mResultContent;
|
|
offsets.offset = pos.mContentOffset;
|
|
}
|
|
}
|
|
|
|
HandleClick(offsets.content, offsets.offset, offsets.offset,
|
|
PR_TRUE, PR_FALSE, offsets.associateWithNext);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::StartAutoScrollTimer(nsIFrame *aFrame,
|
|
nsPoint aPoint,
|
|
PRUint32 aDelay)
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mDomSelections[index]->StartAutoScrollTimer(aFrame, aPoint, aDelay);
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::StopAutoScrollTimer()
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return;
|
|
|
|
mDomSelections[index]->StopAutoScrollTimer();
|
|
}
|
|
|
|
/**
|
|
hard to go from nodes to frames, easy the other way!
|
|
*/
|
|
nsresult
|
|
nsFrameSelection::TakeFocus(nsIContent *aNewFocus,
|
|
PRUint32 aContentOffset,
|
|
PRUint32 aContentEndOffset,
|
|
HINT aHint,
|
|
PRBool aContinueSelection,
|
|
PRBool aMultipleSelection)
|
|
{
|
|
if (!aNewFocus)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
|
|
if (!IsValidSelectionPoint(this,aNewFocus))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Clear all table selection data
|
|
mSelectingTableCellMode = 0;
|
|
mDragSelectingCells = PR_FALSE;
|
|
mStartSelectedCell = nsnull;
|
|
mEndSelectedCell = nsnull;
|
|
mAppendStartSelectedCell = nsnull;
|
|
|
|
//HACKHACKHACK
|
|
if (!aNewFocus->GetParent())
|
|
return NS_ERROR_FAILURE;
|
|
//END HACKHACKHACK /checking for root frames/content
|
|
|
|
mHint = aHint;
|
|
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
//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) {
|
|
// Remove existing collapsed ranges as there's no point in having
|
|
// non-anchor/focus collapsed ranges.
|
|
mDomSelections[index]->RemoveCollapsedRanges();
|
|
|
|
nsCOMPtr<nsIRange> newRange = new nsRange();
|
|
if (!newRange) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
newRange->SetStart(aNewFocus, aContentOffset);
|
|
newRange->SetEnd(aNewFocus, aContentOffset);
|
|
mDomSelections[index]->AddRange(newRange);
|
|
mBatching = batching;
|
|
mChangesDuringBatching = changes;
|
|
}
|
|
else
|
|
{
|
|
PRBool oldDesiredXSet = mDesiredXSet; //need to keep old desired X if it was set.
|
|
mDomSelections[index]->Collapse(aNewFocus, aContentOffset);
|
|
mDesiredXSet = oldDesiredXSet; //now reset desired X back.
|
|
mBatching = batching;
|
|
mChangesDuringBatching = changes;
|
|
}
|
|
if (aContentEndOffset != aContentOffset)
|
|
mDomSelections[index]->Extend(aNewFocus, aContentEndOffset);
|
|
|
|
//find out if we are inside a table. if so, find out which one and which cell
|
|
//once we do that, the next time we get a takefocus, check the parent tree.
|
|
//if we are no longer inside same table ,cell then switch to table selection mode.
|
|
// BUT only do this in an editor
|
|
|
|
NS_ENSURE_STATE(mShell);
|
|
PRInt16 displaySelection = mShell->GetSelectionFlags();
|
|
|
|
// Editor has DISPLAY_ALL selection type
|
|
if (displaySelection == nsISelectionDisplay::DISPLAY_ALL)
|
|
{
|
|
mCellParent = GetCellParent(aNewFocus);
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
if (mCellParent)
|
|
printf(" * TakeFocus - Collapsing into new cell\n");
|
|
#endif
|
|
}
|
|
}
|
|
else {
|
|
// Now update the range list:
|
|
if (aContinueSelection && aNewFocus)
|
|
{
|
|
PRInt32 offset;
|
|
nsINode *cellparent = GetCellParent(aNewFocus);
|
|
if (mCellParent && cellparent && cellparent != mCellParent) //switch to cell selection mode
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" * TakeFocus - moving into new cell\n");
|
|
#endif
|
|
nsMouseEvent event(PR_FALSE, 0, nsnull, nsMouseEvent::eReal);
|
|
|
|
// Start selecting in the cell we were in before
|
|
nsINode* parent = ParentOffset(mCellParent, &offset);
|
|
if (parent)
|
|
HandleTableSelection(parent, offset,
|
|
nsISelectionPrivate::TABLESELECTION_CELL, &event);
|
|
|
|
// Find the parent of this new cell and extend selection to it
|
|
parent = ParentOffset(cellparent, &offset);
|
|
|
|
// XXXX We need to REALLY get the current key shift state
|
|
// (we'd need to add event listener -- let's not bother for now)
|
|
event.isShift = PR_FALSE; //aContinueSelection;
|
|
if (parent)
|
|
{
|
|
mCellParent = cellparent;
|
|
// Continue selection into next cell
|
|
HandleTableSelection(parent, offset,
|
|
nsISelectionPrivate::TABLESELECTION_CELL, &event);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// XXXX Problem: Shift+click in browser is appending text selection to selected table!!!
|
|
// is this the place to erase seleced cells ?????
|
|
if (mDomSelections[index]->GetDirection() == eDirNext && aContentEndOffset > aContentOffset) //didn't go far enough
|
|
{
|
|
mDomSelections[index]->Extend(aNewFocus, aContentEndOffset);//this will only redraw the diff
|
|
}
|
|
else
|
|
mDomSelections[index]->Extend(aNewFocus, aContentOffset);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Don't notify selection listeners if batching is on:
|
|
if (GetBatching())
|
|
return NS_OK;
|
|
return NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL);
|
|
}
|
|
|
|
|
|
|
|
SelectionDetails*
|
|
nsFrameSelection::LookUpSelection(nsIContent *aContent,
|
|
PRInt32 aContentOffset,
|
|
PRInt32 aContentLength,
|
|
PRBool aSlowCheck) const
|
|
{
|
|
if (!aContent || !mShell)
|
|
return nsnull;
|
|
|
|
SelectionDetails* details = nsnull;
|
|
|
|
for (PRInt32 j = 0; j < nsISelectionController::NUM_SELECTIONTYPES; j++) {
|
|
if (mDomSelections[j]) {
|
|
mDomSelections[j]->LookUpSelection(aContent, aContentOffset,
|
|
aContentLength, &details, (SelectionType)(1<<j), aSlowCheck);
|
|
}
|
|
}
|
|
|
|
return details;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::SetMouseDownState(PRBool aState)
|
|
{
|
|
if (mMouseDownState == aState)
|
|
return;
|
|
|
|
mMouseDownState = aState;
|
|
|
|
if (!mMouseDownState)
|
|
{
|
|
mDragSelectingCells = PR_FALSE;
|
|
PostReason(nsISelectionListener::MOUSEUP_REASON);
|
|
NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL); //notify that reason is mouse up please.
|
|
}
|
|
}
|
|
|
|
nsISelection*
|
|
nsFrameSelection::GetSelection(SelectionType aType) const
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(aType);
|
|
if (index < 0)
|
|
return nsnull;
|
|
|
|
return static_cast<nsISelection*>(mDomSelections[index]);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::ScrollSelectionIntoView(SelectionType aType,
|
|
SelectionRegion aRegion,
|
|
PRBool aIsSynchronous) const
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(aType);
|
|
if (index < 0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return mDomSelections[index]->ScrollIntoView(aRegion, aIsSynchronous,
|
|
PR_TRUE);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::RepaintSelection(SelectionType aType) const
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(aType);
|
|
if (index < 0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
NS_ENSURE_STATE(mShell);
|
|
return mDomSelections[index]->Repaint(mShell->GetPresContext());
|
|
}
|
|
|
|
nsIFrame*
|
|
nsFrameSelection::GetFrameForNodeOffset(nsIContent *aNode,
|
|
PRInt32 aOffset,
|
|
HINT aHint,
|
|
PRInt32 *aReturnOffset) const
|
|
{
|
|
if (!aNode || !aReturnOffset || !mShell)
|
|
return nsnull;
|
|
|
|
if (aOffset < 0)
|
|
return nsnull;
|
|
|
|
*aReturnOffset = aOffset;
|
|
|
|
nsCOMPtr<nsIContent> theNode = aNode;
|
|
|
|
if (aNode->IsNodeOfType(nsINode::eELEMENT))
|
|
{
|
|
PRInt32 childIndex = 0;
|
|
PRInt32 numChildren = theNode->GetChildCount();
|
|
|
|
if (aHint == HINTLEFT)
|
|
{
|
|
if (aOffset > 0)
|
|
childIndex = aOffset - 1;
|
|
else
|
|
childIndex = aOffset;
|
|
}
|
|
else // HINTRIGHT
|
|
{
|
|
if (aOffset >= numChildren)
|
|
{
|
|
if (numChildren > 0)
|
|
childIndex = numChildren - 1;
|
|
else
|
|
childIndex = 0;
|
|
}
|
|
else
|
|
childIndex = aOffset;
|
|
}
|
|
|
|
if (childIndex > 0 || numChildren > 0) {
|
|
nsCOMPtr<nsIContent> childNode = theNode->GetChildAt(childIndex);
|
|
|
|
if (!childNode)
|
|
return nsnull;
|
|
|
|
theNode = childNode;
|
|
}
|
|
|
|
#ifdef DONT_DO_THIS_YET
|
|
// XXX: We can't use this code yet because the hinting
|
|
// can cause us to attach 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!
|
|
|
|
if (theNode->IsNodeOfType(nsINode::eELEMENT))
|
|
{
|
|
PRInt32 newOffset = 0;
|
|
|
|
if (aOffset > childIndex)
|
|
{
|
|
numChildren = theNode->GetChildCount();
|
|
|
|
newOffset = numChildren;
|
|
}
|
|
|
|
return GetFrameForNodeOffset(theNode, newOffset, aHint, 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;
|
|
|
|
nsresult rv = textNode->GetLength(&textLength);
|
|
if (NS_FAILED(rv))
|
|
return nsnull;
|
|
|
|
*aReturnOffset = (PRInt32)textLength;
|
|
}
|
|
else
|
|
*aReturnOffset = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsIFrame* returnFrame = theNode->GetPrimaryFrame();
|
|
if (!returnFrame)
|
|
return nsnull;
|
|
|
|
// find the child frame containing the offset we want
|
|
returnFrame->GetChildFrameContainingOffset(*aReturnOffset, aHint,
|
|
&aOffset, &returnFrame);
|
|
return returnFrame;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::CommonPageMove(PRBool aForward,
|
|
PRBool aExtend,
|
|
nsIScrollableFrame* aScrollableFrame)
|
|
{
|
|
// expected behavior for PageMove is to scroll AND move the caret
|
|
// and remain relative position of the caret in view. see Bug 4302.
|
|
|
|
//get the frame from the scrollable view
|
|
|
|
nsIFrame* scrolledFrame = aScrollableFrame->GetScrolledFrame();
|
|
if (!scrolledFrame)
|
|
return;
|
|
|
|
// find out where the caret is.
|
|
// we should know mDesiredX value of nsFrameSelection, but I havent seen that behavior in other windows applications yet.
|
|
nsISelection* domSel = GetSelection(nsISelectionController::SELECTION_NORMAL);
|
|
if (!domSel)
|
|
return;
|
|
|
|
nsRefPtr<nsCaret> caret = mShell->GetCaret();
|
|
|
|
nsRect caretPos;
|
|
nsIFrame* caretFrame = caret->GetGeometry(domSel, &caretPos);
|
|
if (!caretFrame)
|
|
return;
|
|
|
|
//need to adjust caret jump by percentage scroll
|
|
nsSize scrollDelta = aScrollableFrame->GetPageScrollAmount();
|
|
|
|
if (aForward)
|
|
caretPos.y += scrollDelta.height;
|
|
else
|
|
caretPos.y -= scrollDelta.height;
|
|
|
|
caretPos += caretFrame->GetOffsetTo(scrolledFrame);
|
|
|
|
// get a content at desired location
|
|
nsPoint desiredPoint;
|
|
desiredPoint.x = caretPos.x;
|
|
desiredPoint.y = caretPos.y + caretPos.height/2;
|
|
nsIFrame::ContentOffsets offsets =
|
|
scrolledFrame->GetContentOffsetsFromPoint(desiredPoint);
|
|
|
|
if (!offsets.content)
|
|
return;
|
|
|
|
// scroll one page
|
|
aScrollableFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::PAGES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
|
|
// place the caret
|
|
HandleClick(offsets.content, offsets.offset,
|
|
offsets.offset, aExtend, PR_FALSE, PR_TRUE);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::CharacterMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
if (aForward)
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_RIGHT,aExtend,eSelectCharacter);
|
|
else
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_LEFT,aExtend,eSelectCharacter);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::CharacterExtendForDelete()
|
|
{
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_DELETE, PR_TRUE, eSelectCharacter);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::WordMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
if (aForward)
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_RIGHT,aExtend,eSelectWord);
|
|
else
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_LEFT,aExtend,eSelectWord);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::WordExtendForDelete(PRBool aForward)
|
|
{
|
|
if (aForward)
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_DELETE, PR_TRUE, eSelectWord);
|
|
else
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_BACK_SPACE, PR_TRUE, eSelectWord);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::LineMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
if (aForward)
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_DOWN,aExtend,eSelectLine);
|
|
else
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_UP,aExtend,eSelectLine);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::IntraLineMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
if (aForward)
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_END,aExtend,eSelectLine);
|
|
else
|
|
return MoveCaret(nsIDOMKeyEvent::DOM_VK_HOME,aExtend,eSelectLine);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectAll()
|
|
{
|
|
nsCOMPtr<nsIContent> rootContent;
|
|
if (mLimiter)
|
|
{
|
|
rootContent = mLimiter;//addrefit
|
|
}
|
|
else if (mAncestorLimiter) {
|
|
rootContent = mAncestorLimiter;
|
|
}
|
|
else
|
|
{
|
|
NS_ENSURE_STATE(mShell);
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
if (!doc)
|
|
return NS_ERROR_FAILURE;
|
|
rootContent = doc->GetRootContent();
|
|
if (!rootContent)
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
PRInt32 numChildren = rootContent->GetChildCount();
|
|
PostReason(nsISelectionListener::NO_REASON);
|
|
return TakeFocus(rootContent, 0, numChildren, HINTLEFT, PR_FALSE, PR_FALSE);
|
|
}
|
|
|
|
//////////END FRAMESELECTION
|
|
|
|
void
|
|
nsFrameSelection::StartBatchChanges()
|
|
{
|
|
mBatching++;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::EndBatchChanges()
|
|
{
|
|
mBatching--;
|
|
NS_ASSERTION(mBatching >=0,"Bad mBatching");
|
|
if (mBatching == 0 && mChangesDuringBatching){
|
|
mChangesDuringBatching = PR_FALSE;
|
|
NotifySelectionListeners(nsISelectionController::SELECTION_NORMAL);
|
|
}
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::NotifySelectionListeners(SelectionType aType)
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(aType);
|
|
if (index >=0 && mDomSelections[index])
|
|
{
|
|
return mDomSelections[index]->NotifySelectionListeners();
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Start of Table Selection methods
|
|
|
|
static PRBool IsCell(nsIContent *aContent)
|
|
{
|
|
return ((aContent->Tag() == nsGkAtoms::td ||
|
|
aContent->Tag() == nsGkAtoms::th) &&
|
|
aContent->IsHTML());
|
|
}
|
|
|
|
nsITableCellLayout*
|
|
nsFrameSelection::GetCellLayout(nsIContent *aCellContent) const
|
|
{
|
|
NS_ENSURE_TRUE(mShell, nsnull);
|
|
nsITableCellLayout *cellLayoutObject =
|
|
do_QueryFrame(aCellContent->GetPrimaryFrame());
|
|
return cellLayoutObject;
|
|
}
|
|
|
|
nsITableLayout*
|
|
nsFrameSelection::GetTableLayout(nsIContent *aTableContent) const
|
|
{
|
|
NS_ENSURE_TRUE(mShell, nsnull);
|
|
nsITableLayout *tableLayoutObject =
|
|
do_QueryFrame(aTableContent->GetPrimaryFrame());
|
|
return tableLayoutObject;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::ClearNormalSelection()
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mDomSelections[index]->RemoveAllRanges();
|
|
}
|
|
|
|
static nsIContent*
|
|
GetFirstSelectedContent(nsIRange* aRange)
|
|
{
|
|
if (!aRange) {
|
|
return nsnull;
|
|
}
|
|
|
|
NS_PRECONDITION(aRange->GetStartParent(), "Must have start parent!");
|
|
NS_PRECONDITION(aRange->GetStartParent()->IsNodeOfType(nsINode::eELEMENT),
|
|
"Unexpected parent");
|
|
|
|
return aRange->GetStartParent()->GetChildAt(aRange->StartOffset());
|
|
}
|
|
|
|
// Table selection support.
|
|
// TODO: Separate table methods into a separate nsITableSelection interface
|
|
nsresult
|
|
nsFrameSelection::HandleTableSelection(nsINode *aParentContent,
|
|
PRInt32 aContentOffset,
|
|
PRInt32 aTarget,
|
|
nsMouseEvent *aMouseEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aParentContent, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aMouseEvent, NS_ERROR_NULL_POINTER);
|
|
|
|
if (mMouseDownState && mDragSelectingCells && (aTarget & nsISelectionPrivate::TABLESELECTION_TABLE))
|
|
{
|
|
// We were selecting cells and user drags mouse in table border or inbetween cells,
|
|
// just do nothing
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
nsIContent *childContent = aParentContent->GetChildAt(aContentOffset);
|
|
|
|
// When doing table selection, always set the direction to next so
|
|
// we can be sure that anchorNode's offset always points to the
|
|
// selected cell
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
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 (mMouseDownState && mDragSelectingCells)
|
|
{
|
|
// We are drag-selecting
|
|
if (aTarget != nsISelectionPrivate::TABLESELECTION_TABLE)
|
|
{
|
|
// If dragging in the same cell as last event, do nothing
|
|
if (mEndSelectedCell == childContent)
|
|
return NS_OK;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" mStartSelectedCell = %x, mEndSelectedCell = %x, childContent = %x \n", mStartSelectedCell, mEndSelectedCell, childContent);
|
|
#endif
|
|
// aTarget can be any "cell mode",
|
|
// so we can easily drag-select rows and columns
|
|
// Once we are in row or column mode,
|
|
// we can drift into any cell to stay in that mode
|
|
// even if aTarget = TABLESELECTION_CELL
|
|
|
|
if (mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_ROW ||
|
|
mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
{
|
|
if (mEndSelectedCell)
|
|
{
|
|
// Also check if cell is in same row/col
|
|
result = GetCellIndexes(mEndSelectedCell, startRowIndex, startColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" curRowIndex = %d, startRowIndex = %d, curColIndex = %d, startColIndex = %d\n", curRowIndex, startRowIndex, curColIndex, startColIndex);
|
|
#endif
|
|
if ((mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_ROW && startRowIndex == curRowIndex) ||
|
|
(mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_COLUMN && startColIndex == curColIndex))
|
|
return NS_OK;
|
|
}
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf(" Dragged into a new column or row\n");
|
|
#endif
|
|
// Continue dragging row or column selection
|
|
return SelectRowOrColumn(childContent, mSelectingTableCellMode);
|
|
}
|
|
else if (mSelectingTableCellMode == nsISelectionPrivate::TABLESELECTION_CELL)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Dragged into a new cell\n");
|
|
#endif
|
|
// Trick for quick selection of rows and columns
|
|
// Hold down shift, then start selecting in one direction
|
|
// If next cell dragged into is in same row, select entire row,
|
|
// if next cell is in same column, select entire column
|
|
if (mStartSelectedCell && aMouseEvent->isShift)
|
|
{
|
|
result = GetCellIndexes(mStartSelectedCell, startRowIndex, startColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(childContent, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (startRowIndex == curRowIndex ||
|
|
startColIndex == curColIndex)
|
|
{
|
|
// Force new selection block
|
|
mStartSelectedCell = nsnull;
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
|
|
if (startRowIndex == curRowIndex)
|
|
mSelectingTableCellMode = nsISelectionPrivate::TABLESELECTION_ROW;
|
|
else
|
|
mSelectingTableCellMode = nsISelectionPrivate::TABLESELECTION_COLUMN;
|
|
|
|
return SelectRowOrColumn(childContent, mSelectingTableCellMode);
|
|
}
|
|
}
|
|
|
|
// Reselect block of cells to new end location
|
|
return SelectBlockOfCells(mStartSelectedCell, childContent);
|
|
}
|
|
}
|
|
// Do nothing if dragging in table, but outside a cell
|
|
return NS_OK;
|
|
}
|
|
else
|
|
{
|
|
// Not dragging -- mouse event is down or up
|
|
if (mMouseDownState)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Mouse down event\n");
|
|
#endif
|
|
// Clear cell we stored in mouse-down
|
|
mUnselectCellOnMouseUp = nsnull;
|
|
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_CELL)
|
|
{
|
|
PRBool isSelected = PR_FALSE;
|
|
|
|
// Check if we have other selected cells
|
|
nsIContent* previousCellNode =
|
|
GetFirstSelectedContent(GetFirstCellRange());
|
|
if (previousCellNode)
|
|
{
|
|
// We have at least 1 other selected cell
|
|
|
|
// Check if new cell is already selected
|
|
nsIFrame *cellFrame = childContent->GetPrimaryFrame();
|
|
if (!cellFrame) return NS_ERROR_NULL_POINTER;
|
|
result = cellFrame->GetSelected(&isSelected);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
else
|
|
{
|
|
// No cells selected -- remove non-cell selection
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
}
|
|
mDragSelectingCells = 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
|
|
if (previousCellNode &&
|
|
!IsInSameTable(previousCellNode, childContent))
|
|
{
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
// Reset selection mode that is cleared in RemoveAllRanges
|
|
mSelectingTableCellMode = aTarget;
|
|
}
|
|
|
|
return SelectCellElement(childContent);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
else if (aTarget == nsISelectionPrivate::TABLESELECTION_TABLE)
|
|
{
|
|
//TODO: We currently select entire table when clicked between cells,
|
|
// should we restrict to only around border?
|
|
// *** How do we get location data for cell and click?
|
|
mDragSelectingCells = PR_FALSE;
|
|
mStartSelectedCell = nsnull;
|
|
mEndSelectedCell = nsnull;
|
|
|
|
// Remove existing selection and select the table
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
return CreateAndAddRange(aParentContent, aContentOffset);
|
|
}
|
|
else if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW || aTarget == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("aTarget == %d\n", aTarget);
|
|
#endif
|
|
|
|
// Start drag-selecting mode so multiple rows/cols can be selected
|
|
// Note: Currently, nsFrame::GetDataForTableSelection
|
|
// will never call us for row or column selection on mouse down
|
|
mDragSelectingCells = PR_TRUE;
|
|
|
|
// Force new selection block
|
|
mStartSelectedCell = nsnull;
|
|
mDomSelections[index]->RemoveAllRanges();
|
|
// Always do this AFTER RemoveAllRanges
|
|
mSelectingTableCellMode = aTarget;
|
|
return SelectRowOrColumn(childContent, aTarget);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Mouse UP event. mDragSelectingCells=%d, mStartSelectedCell=%d\n", mDragSelectingCells, mStartSelectedCell);
|
|
#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)
|
|
{
|
|
// Shift key is down: append a block selection
|
|
mDragSelectingCells = PR_FALSE;
|
|
return SelectBlockOfCells(mAppendStartSelectedCell, childContent);
|
|
}
|
|
|
|
if (mDragSelectingCells)
|
|
mAppendStartSelectedCell = mStartSelectedCell;
|
|
|
|
mDragSelectingCells = PR_FALSE;
|
|
mStartSelectedCell = nsnull;
|
|
mEndSelectedCell = nsnull;
|
|
|
|
// Any other mouseup actions require that Ctrl or Cmd key is pressed
|
|
// else stop table selection mode
|
|
PRBool doMouseUpAction = PR_FALSE;
|
|
#ifdef XP_MACOSX
|
|
doMouseUpAction = aMouseEvent->isMeta;
|
|
#else
|
|
doMouseUpAction = aMouseEvent->isControl;
|
|
#endif
|
|
if (!doMouseUpAction)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Ending cell selection on mouseup: mAppendStartSelectedCell=%d\n", mAppendStartSelectedCell);
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
// Unselect a cell only if it wasn't
|
|
// just selected on mousedown
|
|
if( childContent == mUnselectCellOnMouseUp)
|
|
{
|
|
// Scan ranges to find the cell to unselect (the selection range to remove)
|
|
// XXXbz it's really weird that this lives outside the loop, so once we
|
|
// find one we keep looking at it even if we find no more cells...
|
|
nsINode* previousCellParent = nsnull;
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Unselecting mUnselectCellOnMouseUp; rangeCount=%d\n", rangeCount);
|
|
#endif
|
|
for( PRInt32 i = 0; i < rangeCount; i++)
|
|
{
|
|
// Strong reference, because sometimes we want to remove
|
|
// this range, and then we might be the only owner.
|
|
nsCOMPtr<nsIRange> range = mDomSelections[index]->GetRangeAt(i);
|
|
if (!range) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsINode* parent = range->GetStartParent();
|
|
if (!parent) return NS_ERROR_NULL_POINTER;
|
|
|
|
PRInt32 offset = range->StartOffset();
|
|
// Be sure previous selection is a table cell
|
|
nsIContent* child = parent->GetChildAt(offset);
|
|
if (child && IsCell(child))
|
|
previousCellParent = parent;
|
|
|
|
// We're done if we didn't find parent of a previously-selected cell
|
|
if (!previousCellParent) break;
|
|
|
|
if (previousCellParent == aParentContent && offset == aContentOffset)
|
|
{
|
|
// Cell is already selected
|
|
if (rangeCount == 1)
|
|
{
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Unselecting single selected cell\n");
|
|
#endif
|
|
// This was the only cell selected.
|
|
// Collapse to "normal" selection inside the cell
|
|
mStartSelectedCell = nsnull;
|
|
mEndSelectedCell = nsnull;
|
|
mAppendStartSelectedCell = nsnull;
|
|
//TODO: We need a "Collapse to just before deepest child" routine
|
|
// Even better, should we collapse to just after the LAST deepest child
|
|
// (i.e., at the end of the cell's contents)?
|
|
return mDomSelections[index]->Collapse(childContent, 0);
|
|
}
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
printf("HandleTableSelection: Removing cell from multi-cell selection\n");
|
|
#endif
|
|
// Unselecting the start of previous block
|
|
// XXX What do we use now!
|
|
if (childContent == mAppendStartSelectedCell)
|
|
mAppendStartSelectedCell = nsnull;
|
|
|
|
// Deselect cell by removing its range from selection
|
|
return mDomSelections[index]->RemoveRange(range);
|
|
}
|
|
}
|
|
mUnselectCellOnMouseUp = nsnull;
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectBlockOfCells(nsIContent *aStartCell, nsIContent *aEndCell)
|
|
{
|
|
NS_ENSURE_TRUE(aStartCell, NS_ERROR_NULL_POINTER);
|
|
NS_ENSURE_TRUE(aEndCell, NS_ERROR_NULL_POINTER);
|
|
mEndSelectedCell = aEndCell;
|
|
|
|
nsCOMPtr<nsIContent> startCell;
|
|
nsresult result = NS_OK;
|
|
|
|
// If new end cell is in a different table, do nothing
|
|
nsIContent* table = IsInSameTable(aStartCell, aEndCell);
|
|
if (!table) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get starting and ending cells' location in the cellmap
|
|
PRInt32 startRowIndex, startColIndex, endRowIndex, endColIndex;
|
|
result = GetCellIndexes(aStartCell, startRowIndex, startColIndex);
|
|
if(NS_FAILED(result)) return result;
|
|
result = GetCellIndexes(aEndCell, endRowIndex, endColIndex);
|
|
if(NS_FAILED(result)) return result;
|
|
|
|
if (mDragSelectingCells)
|
|
{
|
|
// Drag selecting: remove selected cells outside of new block limits
|
|
UnselectCells(table, startRowIndex, startColIndex, endRowIndex, endColIndex,
|
|
PR_TRUE);
|
|
}
|
|
|
|
// Note that we select block in the direction of user's mouse dragging,
|
|
// which means start cell may be after the end cell in either row or column
|
|
return AddCellsToSelection(table, startRowIndex, startColIndex,
|
|
endRowIndex, endColIndex);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::UnselectCells(nsIContent *aTableContent,
|
|
PRInt32 aStartRowIndex,
|
|
PRInt32 aStartColumnIndex,
|
|
PRInt32 aEndRowIndex,
|
|
PRInt32 aEndColumnIndex,
|
|
PRBool aRemoveOutsideOfCellRange)
|
|
{
|
|
PRInt8 index =
|
|
GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsITableLayout *tableLayout = GetTableLayout(aTableContent);
|
|
if (!tableLayout)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
PRInt32 minRowIndex = NS_MIN(aStartRowIndex, aEndRowIndex);
|
|
PRInt32 maxRowIndex = NS_MAX(aStartRowIndex, aEndRowIndex);
|
|
PRInt32 minColIndex = NS_MIN(aStartColumnIndex, aEndColumnIndex);
|
|
PRInt32 maxColIndex = NS_MAX(aStartColumnIndex, aEndColumnIndex);
|
|
|
|
// Strong reference because we sometimes remove the range
|
|
nsCOMPtr<nsIRange> range = GetFirstCellRange();
|
|
nsIContent* cellNode = GetFirstSelectedContent(range);
|
|
NS_PRECONDITION(!range || cellNode, "Must have cellNode if had a range");
|
|
|
|
PRInt32 curRowIndex, curColIndex;
|
|
while (cellNode)
|
|
{
|
|
nsresult result = GetCellIndexes(cellNode, curRowIndex, curColIndex);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
#ifdef DEBUG_TABLE_SELECTION
|
|
if (!range)
|
|
printf("RemoveCellsToSelection -- range is null\n");
|
|
#endif
|
|
|
|
if (range) {
|
|
if (aRemoveOutsideOfCellRange) {
|
|
if (curRowIndex < minRowIndex || curRowIndex > maxRowIndex ||
|
|
curColIndex < minColIndex || curColIndex > maxColIndex) {
|
|
|
|
mDomSelections[index]->RemoveRange(range);
|
|
// Since we've removed the range, decrement pointer to next range
|
|
mSelectedCellIndex--;
|
|
}
|
|
|
|
} else {
|
|
// Remove cell from selection if it belongs to the given cells range or
|
|
// it is spanned onto the cells range.
|
|
nsCOMPtr<nsIDOMElement> cellElement;
|
|
PRInt32 origRowIndex, origColIndex, rowSpan, colSpan,
|
|
actualRowSpan, actualColSpan;
|
|
PRBool isSelected;
|
|
|
|
result = tableLayout->GetCellDataAt(curRowIndex, curColIndex,
|
|
*getter_AddRefs(cellElement),
|
|
origRowIndex, origColIndex,
|
|
rowSpan, colSpan,
|
|
actualRowSpan, actualColSpan,
|
|
isSelected);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (origRowIndex <= maxRowIndex &&
|
|
origRowIndex + actualRowSpan - 1 >= minRowIndex &&
|
|
origColIndex <= maxColIndex &&
|
|
origColIndex + actualColSpan - 1 >= minColIndex) {
|
|
|
|
mDomSelections[index]->RemoveRange(range);
|
|
// Since we've removed the range, decrement pointer to next range
|
|
mSelectedCellIndex--;
|
|
}
|
|
}
|
|
}
|
|
|
|
range = GetNextCellRange();
|
|
cellNode = GetFirstSelectedContent(range);
|
|
NS_PRECONDITION(!range || cellNode, "Must have cellNode if had a range");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::AddCellsToSelection(nsIContent *aTableContent,
|
|
PRInt32 aStartRowIndex,
|
|
PRInt32 aStartColumnIndex,
|
|
PRInt32 aEndRowIndex,
|
|
PRInt32 aEndColumnIndex)
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// 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(aTableContent);
|
|
if (!tableLayoutObject) // Check that |table| is a table.
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMElement> cellElement;
|
|
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan,
|
|
curRowIndex, curColIndex;
|
|
PRBool isSelected;
|
|
nsresult result = NS_OK;
|
|
|
|
PRInt32 row = aStartRowIndex;
|
|
while(PR_TRUE)
|
|
{
|
|
PRInt32 col = aStartColumnIndex;
|
|
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)
|
|
{
|
|
nsCOMPtr<nsIContent> cellContent = do_QueryInterface(cellElement);
|
|
result = SelectCellElement(cellContent);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
// Done when we reach end column
|
|
if (col == aEndColumnIndex) break;
|
|
|
|
if (aStartColumnIndex < aEndColumnIndex)
|
|
col ++;
|
|
else
|
|
col--;
|
|
};
|
|
if (row == aEndRowIndex) break;
|
|
|
|
if (aStartRowIndex < aEndRowIndex)
|
|
row++;
|
|
else
|
|
row--;
|
|
};
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::RemoveCellsFromSelection(nsIContent *aTable,
|
|
PRInt32 aStartRowIndex,
|
|
PRInt32 aStartColumnIndex,
|
|
PRInt32 aEndRowIndex,
|
|
PRInt32 aEndColumnIndex)
|
|
{
|
|
return UnselectCells(aTable, aStartRowIndex, aStartColumnIndex,
|
|
aEndRowIndex, aEndColumnIndex, PR_FALSE);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::RestrictCellsToSelection(nsIContent *aTable,
|
|
PRInt32 aStartRowIndex,
|
|
PRInt32 aStartColumnIndex,
|
|
PRInt32 aEndRowIndex,
|
|
PRInt32 aEndColumnIndex)
|
|
{
|
|
return UnselectCells(aTable, aStartRowIndex, aStartColumnIndex,
|
|
aEndRowIndex, aEndColumnIndex, PR_TRUE);
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectRowOrColumn(nsIContent *aCellContent, PRUint32 aTarget)
|
|
{
|
|
if (!aCellContent) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsIContent* table = GetParentTable(aCellContent);
|
|
if (!table) return NS_ERROR_NULL_POINTER;
|
|
|
|
// Get table and cell layout interfaces to access
|
|
// cell data based on cellmap location
|
|
// Frames are not ref counted, so don't use an nsCOMPtr
|
|
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;
|
|
nsresult result = cellLayout->GetCellIndexes(rowIndex, colIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// Be sure we start at proper beginning
|
|
// (This allows us to select row or col given ANY cell!)
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW)
|
|
colIndex = 0;
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_COLUMN)
|
|
rowIndex = 0;
|
|
|
|
nsCOMPtr<nsIDOMElement> cellElement;
|
|
nsCOMPtr<nsIContent> 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 = do_QueryInterface(cellElement);
|
|
|
|
lastCell = cellElement;
|
|
|
|
// Move to next cell in cellmap, skipping spanned locations
|
|
if (aTarget == nsISelectionPrivate::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 = firstCell;
|
|
}
|
|
nsCOMPtr<nsIContent> lastCellContent = do_QueryInterface(lastCell);
|
|
result = SelectBlockOfCells(mStartSelectedCell, lastCellContent);
|
|
|
|
// This gets set to the cell at end of row/col,
|
|
// but we need it to be the cell under cursor
|
|
mEndSelectedCell = aCellContent;
|
|
return result;
|
|
}
|
|
|
|
#if 0
|
|
// This is a more efficient strategy that appends row to current selection,
|
|
// but doesn't allow dragging OFF of an existing selection to unselect!
|
|
do {
|
|
// Loop through all cells in column or row
|
|
result = tableLayout->GetCellDataAt(rowIndex, colIndex,
|
|
getter_AddRefs(cellElement),
|
|
curRowIndex, curColIndex,
|
|
rowSpan, colSpan,
|
|
actualRowSpan, actualColSpan,
|
|
isSelected);
|
|
if (NS_FAILED(result)) return result;
|
|
// We're done when cell is not found
|
|
if (!cellElement) break;
|
|
|
|
|
|
// Check spans else we infinitely loop
|
|
NS_ASSERTION(actualColSpan, "actualColSpan is 0!");
|
|
NS_ASSERTION(actualRowSpan, "actualRowSpan is 0!");
|
|
|
|
// Skip cells that are already selected or span from outside our region
|
|
if (!isSelected && rowIndex == curRowIndex && colIndex == curColIndex)
|
|
{
|
|
result = SelectCellElement(cellElement);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
// Move to next row or column in cellmap, skipping spanned locations
|
|
if (aTarget == nsISelectionPrivate::TABLESELECTION_ROW)
|
|
colIndex += actualColSpan;
|
|
else
|
|
rowIndex += actualRowSpan;
|
|
}
|
|
while (cellElement);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::GetFirstCellNodeInRange(nsIRange *aRange) const
|
|
{
|
|
if (!aRange) return nsnull;
|
|
|
|
nsINode* startParent = aRange->GetStartParent();
|
|
if (!startParent)
|
|
return nsnull;
|
|
|
|
PRInt32 offset = aRange->StartOffset();
|
|
|
|
nsIContent* childContent = startParent->GetChildAt(offset);
|
|
if (!childContent)
|
|
return nsnull;
|
|
// Don't return node if not a cell
|
|
if (!IsCell(childContent))
|
|
return nsnull;
|
|
|
|
return childContent;
|
|
}
|
|
|
|
nsIRange*
|
|
nsFrameSelection::GetFirstCellRange()
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return nsnull;
|
|
|
|
nsIRange* firstRange = mDomSelections[index]->GetRangeAt(0);
|
|
if (!GetFirstCellNodeInRange(firstRange)) {
|
|
return nsnull;
|
|
}
|
|
|
|
// Setup for next cell
|
|
mSelectedCellIndex = 1;
|
|
|
|
return firstRange;
|
|
}
|
|
|
|
nsIRange*
|
|
nsFrameSelection::GetNextCellRange()
|
|
{
|
|
PRInt8 index = GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return nsnull;
|
|
|
|
nsIRange* range = mDomSelections[index]->GetRangeAt(mSelectedCellIndex);
|
|
|
|
// Get first node in next range of selection - test if it's a cell
|
|
if (!GetFirstCellNodeInRange(range)) {
|
|
return nsnull;
|
|
}
|
|
|
|
// Setup for next cell
|
|
mSelectedCellIndex++;
|
|
|
|
return range;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::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);
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::IsInSameTable(nsIContent *aContent1,
|
|
nsIContent *aContent2) const
|
|
{
|
|
if (!aContent1 || !aContent2) return PR_FALSE;
|
|
|
|
nsIContent* tableNode1 = GetParentTable(aContent1);
|
|
nsIContent* tableNode2 = GetParentTable(aContent2);
|
|
|
|
// Must be in the same table. Note that we want to return false for
|
|
// the test if both tables are null.
|
|
return (tableNode1 == tableNode2) ? tableNode1 : nsnull;
|
|
}
|
|
|
|
nsIContent*
|
|
nsFrameSelection::GetParentTable(nsIContent *aCell) const
|
|
{
|
|
if (!aCell) {
|
|
return nsnull;
|
|
}
|
|
|
|
for (nsIContent* parent = aCell->GetParent(); parent;
|
|
parent = parent->GetParent()) {
|
|
if (parent->Tag() == nsGkAtoms::table &&
|
|
parent->IsHTML()) {
|
|
return parent;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::SelectCellElement(nsIContent *aCellElement)
|
|
{
|
|
nsIContent *parent = aCellElement->GetParent();
|
|
|
|
// Get child offset
|
|
PRInt32 offset = parent->IndexOf(aCellElement);
|
|
|
|
return CreateAndAddRange(parent, offset);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::getTableCellLocationFromRange(nsIRange *aRange, PRInt32 *aSelectionType, PRInt32 *aRow, PRInt32 *aCol)
|
|
{
|
|
if (!aRange || !aSelectionType || !aRow || !aCol)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aSelectionType = nsISelectionPrivate::TABLESELECTION_NONE;
|
|
*aRow = 0;
|
|
*aCol = 0;
|
|
|
|
// Must have access to frame selection to get cell info
|
|
if (!mFrameSelection) return NS_OK;
|
|
|
|
nsresult result = GetTableSelectionType(aRange, aSelectionType);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// Don't fail if range does not point to a single table cell,
|
|
// let aSelectionType tell user if we don't have a cell
|
|
if (*aSelectionType != nsISelectionPrivate::TABLESELECTION_CELL)
|
|
return NS_OK;
|
|
|
|
// Get the child content (the cell) pointed to by starting node of range
|
|
// We do minimal checking since GetTableSelectionType assures
|
|
// us that this really is a table cell
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aRange->GetStartParent());
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIContent *child = content->GetChildAt(aRange->StartOffset());
|
|
if (!child)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//Note: This is a non-ref-counted pointer to the frame
|
|
nsITableCellLayout *cellLayout = mFrameSelection->GetCellLayout(child);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
if (!cellLayout)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return cellLayout->GetCellIndexes(*aRow, *aCol);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::addTableCellRange(nsIRange *aRange, PRBool *aDidAddRange,
|
|
PRInt32 *aOutIndex)
|
|
{
|
|
if (!aDidAddRange || !aOutIndex)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aDidAddRange = PR_FALSE;
|
|
*aOutIndex = -1;
|
|
|
|
if (!mFrameSelection)
|
|
return NS_OK;
|
|
|
|
if (!aRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result;
|
|
|
|
// Get if we are adding a cell selection and the row, col of cell if we are
|
|
PRInt32 newRow, newCol, tableMode;
|
|
result = getTableCellLocationFromRange(aRange, &tableMode, &newRow, &newCol);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// If not adding a cell range, we are done here
|
|
if (tableMode != nsISelectionPrivate::TABLESELECTION_CELL)
|
|
{
|
|
mFrameSelection->mSelectingTableCellMode = tableMode;
|
|
// Don't fail if range isn't a selected cell, aDidAddRange tells caller if we didn't proceed
|
|
return NS_OK;
|
|
}
|
|
|
|
// Set frame selection mode only if not already set to a table mode
|
|
// so we don't lose the select row and column flags (not detected by getTableCellLocation)
|
|
if (mFrameSelection->mSelectingTableCellMode == TABLESELECTION_NONE)
|
|
mFrameSelection->mSelectingTableCellMode = tableMode;
|
|
|
|
*aDidAddRange = PR_TRUE;
|
|
return AddItem(aRange, aOutIndex);
|
|
}
|
|
|
|
//TODO: Figure out TABLESELECTION_COLUMN and TABLESELECTION_ALLCELLS
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetTableSelectionType(nsIDOMRange* aRange,
|
|
PRInt32* aTableSelectionType)
|
|
{
|
|
nsCOMPtr<nsIRange> range = do_QueryInterface(aRange);
|
|
return GetTableSelectionType(range, aTableSelectionType);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::GetTableSelectionType(nsIRange* aRange,
|
|
PRInt32* aTableSelectionType)
|
|
{
|
|
if (!aRange || !aTableSelectionType)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_NONE;
|
|
|
|
// Must have access to frame selection to get cell info
|
|
if(!mFrameSelection) return NS_OK;
|
|
|
|
nsINode* startNode = aRange->GetStartParent();
|
|
if (!startNode) return NS_ERROR_FAILURE;
|
|
|
|
nsINode* endNode = aRange->GetEndParent();
|
|
if (!endNode) return NS_ERROR_FAILURE;
|
|
|
|
// Not a single selected node
|
|
if (startNode != endNode) return NS_OK;
|
|
|
|
PRInt32 startOffset = aRange->StartOffset();
|
|
PRInt32 endOffset = aRange->EndOffset();
|
|
|
|
// Not a single selected node
|
|
if ((endOffset - startOffset) != 1)
|
|
return NS_OK;
|
|
|
|
nsIContent* startContent = static_cast<nsIContent*>(startNode);
|
|
if (!(startNode->IsNodeOfType(nsINode::eELEMENT) && startContent->IsHTML())) {
|
|
// Implies a check for being an element; if we ever make this work
|
|
// for non-HTML, need to keep checking for elements.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIAtom *tag = startContent->Tag();
|
|
|
|
if (tag == nsGkAtoms::tr)
|
|
{
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_CELL;
|
|
}
|
|
else //check to see if we are selecting a table or row (column and all cells not done yet)
|
|
{
|
|
nsIContent *child = startNode->GetChildAt(startOffset);
|
|
if (!child)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
tag = child->Tag();
|
|
|
|
if (tag == nsGkAtoms::table)
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_TABLE;
|
|
else if (tag == nsGkAtoms::tr)
|
|
*aTableSelectionType = nsISelectionPrivate::TABLESELECTION_ROW;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameSelection::CreateAndAddRange(nsINode *aParentNode, PRInt32 aOffset)
|
|
{
|
|
if (!aParentNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIRange> range = new nsRange();
|
|
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);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mDomSelections[index]->AddRange(range);
|
|
}
|
|
|
|
// End of Table Selection
|
|
|
|
void
|
|
nsFrameSelection::SetAncestorLimiter(nsIContent *aLimiter)
|
|
{
|
|
if (mAncestorLimiter != aLimiter) {
|
|
mAncestorLimiter = aLimiter;
|
|
PRInt8 index =
|
|
GetIndexFromSelectionType(nsISelectionController::SELECTION_NORMAL);
|
|
if (!mDomSelections[index])
|
|
return;
|
|
|
|
if (!IsValidSelectionPoint(this, mDomSelections[index]->GetFocusNode())) {
|
|
ClearNormalSelection();
|
|
if (mAncestorLimiter) {
|
|
PostReason(nsISelectionListener::NO_REASON);
|
|
TakeFocus(mAncestorLimiter, 0, 0, HINTLEFT, PR_FALSE, PR_FALSE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//END nsFrameSelection methods
|
|
|
|
|
|
//BEGIN nsISelection interface implementations
|
|
|
|
|
|
|
|
nsresult
|
|
nsFrameSelection::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);
|
|
if (!mDomSelections[index])
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mDomSelections[index]->GetIsCollapsed( &isCollapsed);
|
|
if (isCollapsed)
|
|
{
|
|
// If the offset is positive, then it's easy:
|
|
if (mDomSelections[index]->GetFocusOffset() > 0)
|
|
{
|
|
mDomSelections[index]->Extend(mDomSelections[index]->GetFocusNode(), mDomSelections[index]->GetFocusOffset() - 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_FAILED(res))
|
|
return res;
|
|
|
|
while (iter.IsDone())
|
|
{
|
|
nsCOMPtr<nsIRange> range = iter.CurrentItem();
|
|
res = range->DeleteContents();
|
|
if (NS_FAILED(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]->GetAnchorNode(), mDomSelections[index]->GetAnchorOffset()-1);
|
|
else if (mDomSelections[index]->GetAnchorOffset() > 0)
|
|
mDomSelections[index]->Collapse(mDomSelections[index]->GetAnchorNode(), mDomSelections[index]->GetAnchorOffset());
|
|
#ifdef DEBUG
|
|
else
|
|
printf("Don't know how to set selection back past frame boundary\n");
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameSelection::SetDelayedCaretData(nsMouseEvent *aMouseEvent)
|
|
{
|
|
if (aMouseEvent)
|
|
{
|
|
mDelayedMouseEventValid = PR_TRUE;
|
|
mDelayedMouseEvent = *aMouseEvent;
|
|
|
|
// Don't cache the widget. We don't need it and it could go away.
|
|
mDelayedMouseEvent.widget = nsnull;
|
|
}
|
|
else
|
|
mDelayedMouseEventValid = PR_FALSE;
|
|
}
|
|
|
|
nsMouseEvent*
|
|
nsFrameSelection::GetDelayedCaretData()
|
|
{
|
|
if (mDelayedMouseEventValid)
|
|
return &mDelayedMouseEvent;
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
//END nsISelection interface implementations
|
|
|
|
#if 0
|
|
#pragma mark -
|
|
#endif
|
|
|
|
// nsTypedSelection implementation
|
|
|
|
// note: this can return a nil anchor node
|
|
|
|
nsTypedSelection::nsTypedSelection()
|
|
: mCachedOffsetForFrame(nsnull)
|
|
, mDirection(eDirNext)
|
|
, mType(nsISelectionController::SELECTION_NORMAL)
|
|
{
|
|
}
|
|
|
|
nsTypedSelection::nsTypedSelection(nsFrameSelection *aList)
|
|
: mFrameSelection(aList)
|
|
, mCachedOffsetForFrame(nsnull)
|
|
, mDirection(eDirNext)
|
|
, mType(nsISelectionController::SELECTION_NORMAL)
|
|
{
|
|
}
|
|
|
|
nsTypedSelection::~nsTypedSelection()
|
|
{
|
|
setAnchorFocusRange(-1);
|
|
|
|
if (mAutoScrollTimer) {
|
|
mAutoScrollTimer->Stop();
|
|
mAutoScrollTimer = nsnull;
|
|
}
|
|
|
|
mScrollEvent.Revoke();
|
|
|
|
if (mCachedOffsetForFrame) {
|
|
delete mCachedOffsetForFrame;
|
|
mCachedOffsetForFrame = nsnull;
|
|
}
|
|
}
|
|
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(nsTypedSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsTypedSelection)
|
|
// Unlink the selection listeners *before* we do RemoveAllRanges since
|
|
// we don't want to notify the listeners during JS GC (they could be
|
|
// in JS!).
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMARRAY(mSelectionListeners)
|
|
tmp->RemoveAllRanges();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsTypedSelection)
|
|
{
|
|
PRUint32 i, count = tmp->mRanges.Length();
|
|
for (i = 0; i < count; ++i) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mRanges[i].mRange)
|
|
}
|
|
}
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mAnchorFocusRange)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mFrameSelection)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mSelectionListeners)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
DOMCI_DATA(Selection, nsTypedSelection)
|
|
|
|
// QueryInterface implementation for nsTypedSelection
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsTypedSelection)
|
|
NS_INTERFACE_MAP_ENTRY(nsISelection)
|
|
NS_INTERFACE_MAP_ENTRY(nsISelection2)
|
|
NS_INTERFACE_MAP_ENTRY(nsISelectionPrivate)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISelection)
|
|
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Selection)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsTypedSelection)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsTypedSelection)
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SetPresShell(nsIPresShell *aPresShell)
|
|
{
|
|
mPresShellWeak = do_GetWeakReference(aPresShell);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetAnchorNode(nsIDOMNode** aAnchorNode)
|
|
{
|
|
nsINode* anchorNode = GetAnchorNode();
|
|
if (anchorNode) {
|
|
return CallQueryInterface(anchorNode, aAnchorNode);
|
|
}
|
|
|
|
*aAnchorNode = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsINode*
|
|
nsTypedSelection::GetAnchorNode()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return nsnull;
|
|
|
|
if (GetDirection() == eDirNext) {
|
|
return mAnchorFocusRange->GetStartParent();
|
|
}
|
|
|
|
return mAnchorFocusRange->GetEndParent();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetAnchorOffset(PRInt32* aAnchorOffset)
|
|
{
|
|
*aAnchorOffset = GetAnchorOffset();
|
|
return NS_OK;
|
|
}
|
|
|
|
// note: this can return a nil focus node
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetFocusNode(nsIDOMNode** aFocusNode)
|
|
{
|
|
nsINode* focusNode = GetFocusNode();
|
|
if (focusNode) {
|
|
return CallQueryInterface(focusNode, aFocusNode);
|
|
}
|
|
|
|
*aFocusNode = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsINode*
|
|
nsTypedSelection::GetFocusNode()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return nsnull;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->GetEndParent();
|
|
}
|
|
|
|
return mAnchorFocusRange->GetStartParent();
|
|
}
|
|
|
|
NS_IMETHODIMP nsTypedSelection::GetFocusOffset(PRInt32* aFocusOffset)
|
|
{
|
|
*aFocusOffset = GetFocusOffset();
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsTypedSelection::setAnchorFocusRange(PRInt32 indx)
|
|
{
|
|
if (indx >= (PRInt32)mRanges.Length())
|
|
return;
|
|
if (indx < 0) //release all
|
|
{
|
|
mAnchorFocusRange = nsnull;
|
|
}
|
|
else{
|
|
mAnchorFocusRange = mRanges[indx].mRange;
|
|
}
|
|
}
|
|
|
|
PRInt32
|
|
nsTypedSelection::GetAnchorOffset()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return 0;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->StartOffset();
|
|
}
|
|
|
|
return mAnchorFocusRange->EndOffset();
|
|
}
|
|
|
|
PRInt32
|
|
nsTypedSelection::GetFocusOffset()
|
|
{
|
|
if (!mAnchorFocusRange)
|
|
return 0;
|
|
|
|
if (GetDirection() == eDirNext){
|
|
return mAnchorFocusRange->EndOffset();
|
|
}
|
|
|
|
return mAnchorFocusRange->StartOffset();
|
|
}
|
|
|
|
static nsresult
|
|
CompareToRangeStart(nsINode* aCompareNode, PRInt32 aCompareOffset,
|
|
nsIRange* aRange, PRInt32* aCmp)
|
|
{
|
|
nsINode* start = aRange->GetStartParent();
|
|
NS_ENSURE_STATE(aCompareNode && start);
|
|
*aCmp = nsContentUtils::ComparePoints(aCompareNode, aCompareOffset,
|
|
start, aRange->StartOffset());
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
CompareToRangeEnd(nsINode* aCompareNode, PRInt32 aCompareOffset,
|
|
nsIRange* aRange, PRInt32* aCmp)
|
|
{
|
|
nsINode* end = aRange->GetEndParent();
|
|
NS_ENSURE_STATE(aCompareNode && end);
|
|
*aCmp = nsContentUtils::ComparePoints(aCompareNode, aCompareOffset,
|
|
end, aRange->EndOffset());
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsTypedSelection::FindInsertionPoint
|
|
//
|
|
// Binary searches the given sorted array of ranges for the insertion point
|
|
// for the given node/offset. The given comparator is used, and the index
|
|
// where the point should appear in the array is placed in *aInsertionPoint.
|
|
//
|
|
// If there is an item in the array equal to the input point, we will return
|
|
// the index of this item.
|
|
|
|
nsresult
|
|
nsTypedSelection::FindInsertionPoint(
|
|
nsTArray<RangeData>* aElementArray,
|
|
nsINode* aPointNode, PRInt32 aPointOffset,
|
|
nsresult (*aComparator)(nsINode*,PRInt32,nsIRange*,PRInt32*),
|
|
PRInt32* aPoint)
|
|
{
|
|
*aPoint = 0;
|
|
PRInt32 beginSearch = 0;
|
|
PRInt32 endSearch = aElementArray->Length(); // one beyond what to check
|
|
while (endSearch - beginSearch > 0) {
|
|
PRInt32 center = (endSearch - beginSearch) / 2 + beginSearch;
|
|
|
|
nsIRange* range = (*aElementArray)[center].mRange;
|
|
|
|
PRInt32 cmp;
|
|
nsresult rv = aComparator(aPointNode, aPointOffset, range, &cmp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (cmp < 0) { // point < cur
|
|
endSearch = center;
|
|
} else if (cmp > 0) { // point > cur
|
|
beginSearch = center + 1;
|
|
} else { // found match, done
|
|
beginSearch = center;
|
|
break;
|
|
}
|
|
}
|
|
*aPoint = beginSearch;
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsTypedSelection::SubtractRange
|
|
//
|
|
// A helper function that subtracts aSubtract from aRange, and adds
|
|
// 1 or 2 RangeData objects representing the remaining non-overlapping
|
|
// difference to aOutput. It is assumed that the caller has checked that
|
|
// aRange and aSubtract do indeed overlap
|
|
|
|
nsresult
|
|
nsTypedSelection::SubtractRange(RangeData* aRange, nsIRange* aSubtract,
|
|
nsTArray<RangeData>* aOutput)
|
|
{
|
|
nsIRange* range = aRange->mRange;
|
|
|
|
// First we want to compare to the range start
|
|
PRInt32 cmp;
|
|
nsresult rv = CompareToRangeStart(range->GetStartParent(),
|
|
range->StartOffset(),
|
|
aSubtract, &cmp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Also, make a comparison to the range end
|
|
PRInt32 cmp2;
|
|
rv = CompareToRangeEnd(range->GetEndParent(),
|
|
range->EndOffset(),
|
|
aSubtract, &cmp2);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// If the existing range left overlaps the new range (aSubtract) then
|
|
// cmp < 0, and cmp2 < 0
|
|
// If it right overlaps the new range then cmp > 0 and cmp2 > 0
|
|
// If it fully contains the new range, then cmp < 0 and cmp2 > 0
|
|
|
|
if (cmp2 > 0) {
|
|
// We need to add a new RangeData to the output, running from
|
|
// the end of aSubtract to the end of range
|
|
nsIRange* postOverlap = new nsRange();
|
|
if (!postOverlap)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
rv =
|
|
postOverlap->SetStart(aSubtract->GetEndParent(), aSubtract->EndOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv =
|
|
postOverlap->SetEnd(range->GetEndParent(), range->EndOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!postOverlap->Collapsed()) {
|
|
if (!aOutput->InsertElementAt(0, RangeData(postOverlap)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
(*aOutput)[0].mTextRangeStyle = aRange->mTextRangeStyle;
|
|
}
|
|
}
|
|
|
|
if (cmp < 0) {
|
|
// We need to add a new RangeData to the output, running from
|
|
// the start of the range to the start of aSubtract
|
|
nsIRange* preOverlap = new nsRange();
|
|
if (!preOverlap)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsresult rv =
|
|
preOverlap->SetStart(range->GetStartParent(), range->StartOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv =
|
|
preOverlap->SetEnd(aSubtract->GetStartParent(), aSubtract->StartOffset());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!preOverlap->Collapsed()) {
|
|
if (!aOutput->InsertElementAt(0, RangeData(preOverlap)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
(*aOutput)[0].mTextRangeStyle = aRange->mTextRangeStyle;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::AddItem(nsIRange *aItem, PRInt32 *aOutIndex)
|
|
{
|
|
if (!aItem)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (!aItem->IsPositioned())
|
|
return NS_ERROR_UNEXPECTED;
|
|
if (aOutIndex)
|
|
*aOutIndex = -1;
|
|
|
|
// a common case is that we have no ranges yet
|
|
if (mRanges.Length() == 0) {
|
|
if (!mRanges.AppendElement(RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
if (aOutIndex)
|
|
*aOutIndex = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
PRInt32 startIndex, endIndex;
|
|
GetIndicesForInterval(aItem->GetStartParent(), aItem->StartOffset(),
|
|
aItem->GetEndParent(), aItem->EndOffset(),
|
|
PR_FALSE, &startIndex, &endIndex);
|
|
|
|
if (endIndex == -1) {
|
|
// All ranges start after the given range. We can insert our range at
|
|
// position 0, knowing there are no overlaps (handled below)
|
|
startIndex = 0;
|
|
endIndex = 0;
|
|
} else if (startIndex == -1) {
|
|
// All ranges end before the given range. We can insert our range at
|
|
// the end of the array, knowing there are no overlaps (handled below)
|
|
startIndex = mRanges.Length();
|
|
endIndex = startIndex;
|
|
}
|
|
|
|
// If the range is already contained in mRanges, silently succeed
|
|
PRBool sameRange = EqualsRangeAtPoint(aItem->GetStartParent(),
|
|
aItem->StartOffset(),
|
|
aItem->GetEndParent(),
|
|
aItem->EndOffset(), startIndex);
|
|
if (sameRange) {
|
|
if (aOutIndex)
|
|
*aOutIndex = startIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (startIndex == endIndex) {
|
|
// The new range doesn't overlap any existing ranges
|
|
if (!mRanges.InsertElementAt(startIndex, RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
if (aOutIndex)
|
|
*aOutIndex = startIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
// We now know that at least 1 existing range overlaps with the range that
|
|
// we are trying to add. In fact, the only ranges of interest are those at
|
|
// the two end points, startIndex and endIndex - 1 (which may point to the
|
|
// same range) as these may partially overlap the new range. Any ranges
|
|
// between these indices are fully overlapped by the new range, and so can be
|
|
// removed
|
|
nsTArray<RangeData> overlaps;
|
|
if (!overlaps.InsertElementAt(0, mRanges[startIndex]))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
if (endIndex - 1 != startIndex) {
|
|
if (!overlaps.InsertElementAt(1, mRanges[endIndex - 1]))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Remove all the overlapping ranges
|
|
mRanges.RemoveElementsAt(startIndex, endIndex - startIndex);
|
|
|
|
nsTArray<RangeData> temp;
|
|
for (PRInt32 i = overlaps.Length() - 1; i >= 0; i--) {
|
|
nsresult rv = SubtractRange(&overlaps[i], aItem, &temp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// Insert the new element into our "leftovers" array
|
|
PRInt32 insertionPoint;
|
|
nsresult rv = FindInsertionPoint(&temp, aItem->GetStartParent(),
|
|
aItem->StartOffset(),
|
|
CompareToRangeStart,
|
|
&insertionPoint);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!temp.InsertElementAt(insertionPoint, RangeData(aItem)))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Merge the leftovers back in to mRanges
|
|
if (!mRanges.InsertElementsAt(startIndex, temp))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
*aOutIndex = startIndex + insertionPoint;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::RemoveItem(nsIRange *aItem)
|
|
{
|
|
if (!aItem)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// Find the range's index & remove it. We could use FindInsertionPoint to
|
|
// get O(log n) time, but that requires many expensive DOM comparisons.
|
|
// For even several thousand items, this is probably faster because the
|
|
// comparisons are so fast.
|
|
PRInt32 idx = -1;
|
|
PRUint32 i;
|
|
for (i = 0; i < mRanges.Length(); i ++) {
|
|
if (mRanges[i].mRange == aItem) {
|
|
idx = (PRInt32)i;
|
|
break;
|
|
}
|
|
}
|
|
if (idx < 0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
mRanges.RemoveElementAt(idx);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::RemoveCollapsedRanges()
|
|
{
|
|
PRUint32 i = 0;
|
|
while (i < mRanges.Length()) {
|
|
if (mRanges[i].mRange->Collapsed()) {
|
|
nsresult rv = RemoveItem(mRanges[i].mRange);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
++i;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::Clear(nsPresContext* aPresContext)
|
|
{
|
|
setAnchorFocusRange(-1);
|
|
|
|
for (PRInt32 i = 0; i < (PRInt32)mRanges.Length(); i ++) {
|
|
selectFrames(aPresContext, mRanges[i].mRange, 0);
|
|
}
|
|
mRanges.Clear();
|
|
|
|
// Reset direction so for more dependable table selection range handling
|
|
SetDirection(eDirNext);
|
|
|
|
// If this was an ATTENTION selection, change it back to normal now
|
|
if (mFrameSelection &&
|
|
mFrameSelection->GetDisplaySelection() ==
|
|
nsISelectionController::SELECTION_ATTENTION) {
|
|
mFrameSelection->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetType(PRInt16 *aType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aType);
|
|
*aType = mType;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// RangeMatches*Point
|
|
//
|
|
// Compares the range beginning or ending point, and returns true if it
|
|
// exactly matches the given DOM point.
|
|
|
|
static inline PRBool
|
|
RangeMatchesBeginPoint(nsIRange* aRange, nsINode* aNode, PRInt32 aOffset)
|
|
{
|
|
return aRange->GetStartParent() == aNode && aRange->StartOffset() == aOffset;
|
|
}
|
|
|
|
static inline PRBool
|
|
RangeMatchesEndPoint(nsIRange* aRange, nsINode* aNode, PRInt32 aOffset)
|
|
{
|
|
return aRange->GetEndParent() == aNode && aRange->EndOffset() == aOffset;
|
|
}
|
|
|
|
// nsTypedSelection::EqualsRangeAtPoint
|
|
//
|
|
// Utility method for checking equivalence of two ranges.
|
|
|
|
PRBool
|
|
nsTypedSelection::EqualsRangeAtPoint(
|
|
nsINode* aBeginNode, PRInt32 aBeginOffset,
|
|
nsINode* aEndNode, PRInt32 aEndOffset,
|
|
PRInt32 aRangeIndex)
|
|
{
|
|
if (aRangeIndex >=0 && aRangeIndex < (PRInt32) mRanges.Length()) {
|
|
nsIRange* range = mRanges[aRangeIndex].mRange;
|
|
if (RangeMatchesBeginPoint(range, aBeginNode, aBeginOffset) &&
|
|
RangeMatchesEndPoint(range, aEndNode, aEndOffset))
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// nsTypedSelection::GetRangesForInterval
|
|
//
|
|
// XPCOM wrapper for the COMArray version
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetRangesForInterval(nsIDOMNode* aBeginNode, PRInt32 aBeginOffset,
|
|
nsIDOMNode* aEndNode, PRInt32 aEndOffset,
|
|
PRBool aAllowAdjacent,
|
|
PRUint32 *aResultCount,
|
|
nsIDOMRange ***aResults)
|
|
{
|
|
if (!aBeginNode || ! aEndNode || ! aResultCount || ! aResults)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aResultCount = 0;
|
|
*aResults = nsnull;
|
|
|
|
nsCOMArray<nsIDOMRange> results;
|
|
nsresult rv = GetRangesForIntervalCOMArray(aBeginNode, aBeginOffset,
|
|
aEndNode, aEndOffset,
|
|
aAllowAdjacent,
|
|
&results);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (results.Count() == 0)
|
|
return NS_OK;
|
|
|
|
*aResults = static_cast<nsIDOMRange**>
|
|
(nsMemory::Alloc(sizeof(nsIDOMRange*) * results.Count()));
|
|
NS_ENSURE_TRUE(*aResults, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
*aResultCount = results.Count();
|
|
for (PRInt32 i = 0; i < results.Count(); i ++)
|
|
NS_ADDREF((*aResults)[i] = results[i]);
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsTypedSelection::GetRangesForIntervalCOMArray
|
|
//
|
|
// Fills a COM array with the ranges overlapping the range specified by
|
|
// the given endpoints. Ranges in the selection exactly adjacent to the
|
|
// input range are not returned unless aAllowAdjacent is set.
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetRangesForIntervalCOMArray(nsIDOMNode* aBeginNode, PRInt32 aBeginOffset,
|
|
nsIDOMNode* aEndNode, PRInt32 aEndOffset,
|
|
PRBool aAllowAdjacent,
|
|
nsCOMArray<nsIDOMRange>* aRanges)
|
|
{
|
|
nsCOMPtr<nsINode> begin = do_QueryInterface(aBeginNode);
|
|
nsCOMPtr<nsINode> end = do_QueryInterface(aEndNode);
|
|
nsCOMArray<nsIRange> ranges;
|
|
nsresult rv = GetRangesForIntervalCOMArray(begin, aBeginOffset,
|
|
end, aEndOffset,
|
|
aAllowAdjacent, &ranges);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
for (PRInt32 i = 0; i < ranges.Count(); ++i) {
|
|
nsCOMPtr<nsIDOMRange> r = do_QueryInterface(ranges[i]);
|
|
if (!aRanges->AppendObject(r)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsTypedSelection::GetRangesForIntervalCOMArray
|
|
//
|
|
// Fills a COM array with the ranges overlapping the range specified by
|
|
// the given endpoints. Ranges in the selection exactly adjacent to the
|
|
// input range are not returned unless aAllowAdjacent is set.
|
|
//
|
|
// For example, if the following ranges were in the selection
|
|
// (assume everything is within the same node)
|
|
//
|
|
// Start Offset: 0 2 7 9
|
|
// End Offset: 2 5 9 10
|
|
//
|
|
// and passed aBeginOffset of 2 and aEndOffset of 9, then with
|
|
// aAllowAdjacent set, all the ranges should be returned. If
|
|
// aAllowAdjacent was false, the ranges [2, 5] and [7, 9] only
|
|
// should be returned
|
|
//
|
|
// Now that overlapping ranges are disallowed, there can be a maximum of
|
|
// 2 adjacent ranges
|
|
|
|
nsresult
|
|
nsTypedSelection::GetRangesForIntervalCOMArray(nsINode* aBeginNode, PRInt32 aBeginOffset,
|
|
nsINode* aEndNode, PRInt32 aEndOffset,
|
|
PRBool aAllowAdjacent,
|
|
nsCOMArray<nsIRange>* aRanges)
|
|
{
|
|
aRanges->Clear();
|
|
PRInt32 startIndex, endIndex;
|
|
GetIndicesForInterval(aBeginNode, aBeginOffset, aEndNode, aEndOffset,
|
|
aAllowAdjacent, &startIndex, &endIndex);
|
|
if (startIndex == -1 || endIndex == -1)
|
|
return NS_OK;
|
|
|
|
for (PRInt32 i = startIndex; i < endIndex; i++) {
|
|
if (!aRanges->AppendObject(mRanges[i].mRange))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsTypedSelection::GetIndicesForInterval
|
|
//
|
|
// Works on the same principle as GetRangesForIntervalCOMArray above, however
|
|
// instead this returns the indices into mRanges between which the
|
|
// overlapping ranges lie.
|
|
|
|
void
|
|
nsTypedSelection::GetIndicesForInterval(nsINode* aBeginNode,
|
|
PRInt32 aBeginOffset,
|
|
nsINode* aEndNode, PRInt32 aEndOffset,
|
|
PRBool aAllowAdjacent,
|
|
PRInt32 *aStartIndex,
|
|
PRInt32 *aEndIndex)
|
|
{
|
|
if (aStartIndex)
|
|
*aStartIndex = -1;
|
|
if (aEndIndex)
|
|
*aEndIndex = -1;
|
|
|
|
if (mRanges.Length() == 0)
|
|
return;
|
|
|
|
PRBool intervalIsCollapsed = aBeginNode == aEndNode &&
|
|
aBeginOffset == aEndOffset;
|
|
|
|
// Ranges that end before the given interval and begin after the given
|
|
// interval can be discarded
|
|
PRInt32 endsBeforeIndex;
|
|
if (NS_FAILED(FindInsertionPoint(&mRanges, aEndNode, aEndOffset,
|
|
&CompareToRangeStart,
|
|
&endsBeforeIndex))) {
|
|
return;
|
|
}
|
|
|
|
if (endsBeforeIndex == 0) {
|
|
nsIRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
|
|
// If the interval is strictly before the range at index 0, we can optimize
|
|
// by returning now - all ranges start after the given interval
|
|
if (!RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset))
|
|
return;
|
|
|
|
// We now know that the start point of mRanges[0].mRange equals the end of
|
|
// the interval. Thus, when aAllowadjacent is true, the caller is always
|
|
// interested in this range. However, when excluding adjacencies, we must
|
|
// remember to include the range when both it and the given interval are
|
|
// collapsed to the same point
|
|
if (!aAllowAdjacent && !(endRange->Collapsed() && intervalIsCollapsed))
|
|
return;
|
|
}
|
|
*aEndIndex = endsBeforeIndex;
|
|
|
|
PRInt32 beginsAfterIndex;
|
|
if (NS_FAILED(FindInsertionPoint(&mRanges, aBeginNode, aBeginOffset,
|
|
&CompareToRangeEnd,
|
|
&beginsAfterIndex))) {
|
|
return;
|
|
}
|
|
if (beginsAfterIndex == (PRInt32) mRanges.Length())
|
|
return; // optimization: all ranges are strictly before us
|
|
|
|
if (aAllowAdjacent) {
|
|
// At this point, one of the following holds:
|
|
// endsBeforeIndex == mRanges.Length(),
|
|
// endsBeforeIndex points to a range whose start point does not equal the
|
|
// given interval's start point
|
|
// endsBeforeIndex points to a range whose start point equals the given
|
|
// interval's start point
|
|
// In the final case, there can be two such ranges, a collapsed range, and
|
|
// an adjacent range (they will appear in mRanges in that order). For this
|
|
// final case, we need to increment endsBeforeIndex, until one of the
|
|
// first two possibilites hold
|
|
while (endsBeforeIndex < (PRInt32) mRanges.Length()) {
|
|
nsIRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
if (!RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset))
|
|
break;
|
|
endsBeforeIndex++;
|
|
}
|
|
|
|
// Likewise, one of the following holds:
|
|
// beginsAfterIndex == 0,
|
|
// beginsAfterIndex points to a range whose end point does not equal
|
|
// the given interval's end point
|
|
// beginsOnOrAfter points to a range whose end point equals the given
|
|
// interval's end point
|
|
// In the final case, there can be two such ranges, an adjacent range, and
|
|
// a collapsed range (they will appear in mRanges in that order). For this
|
|
// final case, we only need to take action if both those ranges exist, and
|
|
// we are pointing to the collapsed range - we need to point to the
|
|
// adjacent range
|
|
nsIRange* beginRange = mRanges[beginsAfterIndex].mRange;
|
|
if (beginsAfterIndex > 0 && beginRange->Collapsed() &&
|
|
RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset)) {
|
|
beginRange = mRanges[beginsAfterIndex - 1].mRange;
|
|
if (RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset))
|
|
beginsAfterIndex--;
|
|
}
|
|
} else {
|
|
// See above for the possibilities at this point. The only case where we
|
|
// need to take action is when the range at beginsAfterIndex ends on
|
|
// the given interval's start point, but that range isn't collapsed (a
|
|
// collapsed range should be included in the returned results).
|
|
nsIRange* beginRange = mRanges[beginsAfterIndex].mRange;
|
|
if (RangeMatchesEndPoint(beginRange, aBeginNode, aBeginOffset) &&
|
|
!beginRange->Collapsed())
|
|
beginsAfterIndex++;
|
|
|
|
// Again, see above for the meaning of endsBeforeIndex at this point.
|
|
// In particular, endsBeforeIndex may point to a collaped range which
|
|
// represents the point at the end of the interval - this range should be
|
|
// included
|
|
if (endsBeforeIndex < (PRInt32) mRanges.Length()) {
|
|
nsIRange* endRange = mRanges[endsBeforeIndex].mRange;
|
|
if (RangeMatchesBeginPoint(endRange, aEndNode, aEndOffset) &&
|
|
endRange->Collapsed())
|
|
endsBeforeIndex++;
|
|
}
|
|
}
|
|
|
|
*aStartIndex = beginsAfterIndex;
|
|
*aEndIndex = endsBeforeIndex;
|
|
return;
|
|
}
|
|
|
|
//utility method to get the primary frame of node or use the offset to get frame of child node
|
|
|
|
#if 0
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetPrimaryFrameForRangeEndpoint(nsIDOMNode *aNode, PRInt32 aOffset, PRBool aIsEndNode, nsIFrame **aReturnFrame)
|
|
{
|
|
if (!aNode || !aReturnFrame || !mFrameSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if (aOffset < 0)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
*aReturnFrame = 0;
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
nsCOMPtr<nsIDOMNode> node = 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;
|
|
|
|
if (content->IsNodeOfType(nsINode::eELEMENT))
|
|
{
|
|
if (aIsEndNode)
|
|
aOffset--;
|
|
|
|
if (aOffset >= 0)
|
|
{
|
|
nsIContent *child = content->GetChildAt(aOffset);
|
|
if (!child) //out of bounds?
|
|
return NS_ERROR_FAILURE;
|
|
|
|
content = child; // releases the focusnode
|
|
}
|
|
}
|
|
*aReturnFrame = content->GetPrimaryFrame();
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetPrimaryFrameForAnchorNode(nsIFrame **aReturnFrame)
|
|
{
|
|
if (!aReturnFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
PRInt32 frameOffset = 0;
|
|
*aReturnFrame = 0;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(GetAnchorNode());
|
|
if (content && mFrameSelection)
|
|
{
|
|
*aReturnFrame = mFrameSelection->
|
|
GetFrameForNodeOffset(content, GetAnchorOffset(),
|
|
mFrameSelection->GetHint(), &frameOffset);
|
|
if (*aReturnFrame)
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetPrimaryFrameForFocusNode(nsIFrame **aReturnFrame, PRInt32 *aOffsetUsed,
|
|
PRBool aVisual)
|
|
{
|
|
if (!aReturnFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(GetFocusNode());
|
|
if (!content || !mFrameSelection)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIPresShell *presShell = mFrameSelection->GetShell();
|
|
|
|
PRInt32 frameOffset = 0;
|
|
*aReturnFrame = 0;
|
|
if (!aOffsetUsed)
|
|
aOffsetUsed = &frameOffset;
|
|
|
|
nsFrameSelection::HINT hint = mFrameSelection->GetHint();
|
|
|
|
if (aVisual) {
|
|
nsRefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (!caret)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
PRUint8 caretBidiLevel = mFrameSelection->GetCaretBidiLevel();
|
|
|
|
return caret->GetCaretFrameForNodeOffset(content, GetFocusOffset(),
|
|
hint, caretBidiLevel, aReturnFrame, aOffsetUsed);
|
|
}
|
|
|
|
*aReturnFrame = mFrameSelection->
|
|
GetFrameForNodeOffset(content, GetFocusOffset(),
|
|
hint, aOffsetUsed);
|
|
if (!*aReturnFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//select all content children of aContent
|
|
nsresult
|
|
nsTypedSelection::SelectAllFramesForContent(nsIContentIterator *aInnerIter,
|
|
nsIContent *aContent,
|
|
PRBool aSelected)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK; // nothing to do
|
|
nsIPresShell* shell = mFrameSelection->GetShell();
|
|
if (!shell)
|
|
return NS_OK;
|
|
nsresult result;
|
|
if (!aInnerIter)
|
|
return NS_ERROR_NULL_POINTER;
|
|
result = aInnerIter->Init(aContent);
|
|
nsIFrame *frame;
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
// First select frame of content passed in
|
|
frame = aContent->GetPrimaryFrame();
|
|
if (frame)
|
|
{
|
|
frame->SetSelected(aSelected, mType);
|
|
if (mFrameSelection->GetTableCellSelection())
|
|
{
|
|
nsITableCellLayout *tcl = do_QueryFrame(frame);
|
|
if (tcl)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
// Now iterated through the child frames and set them
|
|
while (!aInnerIter->IsDone())
|
|
{
|
|
nsCOMPtr<nsIContent> innercontent =
|
|
do_QueryInterface(aInnerIter->GetCurrentNode());
|
|
|
|
frame = innercontent->GetPrimaryFrame();
|
|
if (frame)
|
|
{
|
|
frame->SetSelected(aSelected, mType);
|
|
}
|
|
|
|
aInnerIter->Next();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
|
|
|
|
//the idea of this helper method is to select, deselect "top to bottom" traversing through the frames
|
|
nsresult
|
|
nsTypedSelection::selectFrames(nsPresContext* aPresContext, nsIRange *aRange, PRBool aFlags)
|
|
{
|
|
if (!mFrameSelection || !aPresContext)
|
|
return NS_OK; // nothing to do
|
|
nsIPresShell *presShell = aPresContext->GetPresShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
// Re-get shell because the flush might have destroyed it
|
|
presShell = aPresContext->GetPresShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
nsCOMPtr<nsIDOMRange> domRange = do_QueryInterface(aRange);
|
|
if (!domRange || !aPresContext)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIContentIterator> iter = do_CreateInstance(
|
|
kCSubtreeIteratorCID,
|
|
&result);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
nsCOMPtr<nsIContentIterator> inneriter = do_CreateInstance(
|
|
kCContentIteratorCID,
|
|
&result);
|
|
|
|
if ((NS_SUCCEEDED(result)) && iter && inneriter)
|
|
{
|
|
result = iter->Init(aRange);
|
|
|
|
// loop through the content iterator for each content node
|
|
// for each text node, call SetSelected on it:
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aRange->GetStartParent());
|
|
|
|
// we must call first one explicitly
|
|
if (!content)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
if (content->IsNodeOfType(nsINode::eTEXT))
|
|
{
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
// The frame could be an SVG text frame, in which case we'll ignore
|
|
// it.
|
|
if (frame && frame->GetType() == nsGkAtoms::textFrame)
|
|
{
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
PRUint32 startOffset = aRange->StartOffset();
|
|
PRUint32 endOffset;
|
|
if (aRange->GetEndParent() == content) {
|
|
endOffset = aRange->EndOffset();
|
|
} else {
|
|
endOffset = content->GetText()->GetLength();
|
|
}
|
|
textFrame->SetSelectedRange(startOffset, endOffset, aFlags, mType);
|
|
}
|
|
}
|
|
|
|
iter->First();
|
|
|
|
while (!iter->IsDone())
|
|
{
|
|
content = do_QueryInterface(iter->GetCurrentNode());
|
|
|
|
SelectAllFramesForContent(inneriter, content, aFlags);
|
|
|
|
iter->Next();
|
|
}
|
|
|
|
//we must now do the last one if it is not the same as the first
|
|
if (aRange->GetEndParent() != aRange->GetStartParent())
|
|
{
|
|
content = do_QueryInterface(aRange->GetEndParent(), &result);
|
|
if (NS_FAILED(result) || !content)
|
|
return result;
|
|
|
|
if (content->IsNodeOfType(nsINode::eTEXT))
|
|
{
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
// The frame could be an SVG text frame, in which case we'll
|
|
// ignore it.
|
|
if (frame && frame->GetType() == nsGkAtoms::textFrame)
|
|
{
|
|
nsTextFrame* textFrame = static_cast<nsTextFrame*>(frame);
|
|
textFrame->SetSelectedRange(0, aRange->EndOffset(), aFlags, mType);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// nsTypedSelection::LookUpSelection
|
|
//
|
|
// This function is called when a node wants to know where the selection is
|
|
// over itself.
|
|
//
|
|
// Usually, this is called when we already know there is a selection over
|
|
// the node in question, and we only need to find the boundaries of it on
|
|
// that node. This is when slowCheck is false--a strict test is not needed.
|
|
// Other times, the caller has no idea, and wants us to test everything,
|
|
// so we are supposed to determine whether there is a selection over the
|
|
// node at all.
|
|
//
|
|
// A previous version of this code used this flag to do less work when
|
|
// inclusion was already known (slowCheck=false). However, our tree
|
|
// structure allows us to quickly determine ranges overlapping the node,
|
|
// so we just ignore the slowCheck flag and do the full test every time.
|
|
//
|
|
// PERFORMANCE: a common case is that we are doing a fast check with exactly
|
|
// one range in the selection. In this case, this function is slower than
|
|
// brute force because of the overhead of checking the tree. We can optimize
|
|
// this case to make it faster by doing the same thing the previous version
|
|
// of this function did in the case of 1 range. This would also mean that
|
|
// the aSlowCheck flag would have meaning again.
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::LookUpSelection(nsIContent *aContent, PRInt32 aContentOffset,
|
|
PRInt32 aContentLength,
|
|
SelectionDetails **aReturnDetails,
|
|
SelectionType aType, PRBool aSlowCheck)
|
|
{
|
|
nsresult rv;
|
|
if (!aContent || ! aReturnDetails)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// it is common to have no ranges, to optimize that
|
|
if (mRanges.Length() == 0)
|
|
return NS_OK;
|
|
|
|
nsCOMArray<nsIRange> overlappingRanges;
|
|
rv = GetRangesForIntervalCOMArray(aContent, aContentOffset,
|
|
aContent, aContentOffset + aContentLength,
|
|
PR_FALSE,
|
|
&overlappingRanges);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (overlappingRanges.Count() == 0)
|
|
return NS_OK;
|
|
|
|
for (PRInt32 i = 0; i < overlappingRanges.Count(); i ++) {
|
|
nsIRange* range = overlappingRanges[i];
|
|
nsINode* startNode = range->GetStartParent();
|
|
nsINode* endNode = range->GetEndParent();
|
|
PRInt32 startOffset = range->StartOffset();
|
|
PRInt32 endOffset = range->EndOffset();
|
|
|
|
PRInt32 start = -1, end = -1;
|
|
if (startNode == aContent && endNode == aContent) {
|
|
if (startOffset < (aContentOffset + aContentLength) &&
|
|
endOffset > aContentOffset) {
|
|
// this range is totally inside the requested content range
|
|
start = NS_MAX(0, startOffset - aContentOffset);
|
|
end = NS_MIN(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
// otherwise, range is inside the requested node, but does not intersect
|
|
// the requested content range, so ignore it
|
|
} else if (startNode == aContent) {
|
|
if (startOffset < (aContentOffset + aContentLength)) {
|
|
// the beginning of the range is inside the requested node, but the
|
|
// end is outside, select everything from there to the end
|
|
start = NS_MAX(0, startOffset - aContentOffset);
|
|
end = aContentLength;
|
|
}
|
|
} else if (endNode == aContent) {
|
|
if (endOffset > aContentOffset) {
|
|
// the end of the range is inside the requested node, but the beginning
|
|
// is outside, select everything from the beginning to there
|
|
start = 0;
|
|
end = NS_MIN(aContentLength, endOffset - aContentOffset);
|
|
}
|
|
} else {
|
|
// this range does not begin or end in the requested node, but since
|
|
// GetRangesForInterval returned this range, we know it overlaps.
|
|
// Therefore, this node is enclosed in the range, and we select all
|
|
// of it.
|
|
start = 0;
|
|
end = aContentLength;
|
|
}
|
|
if (start < 0)
|
|
continue; // the ranges do not overlap the input range
|
|
|
|
SelectionDetails* details = new SelectionDetails;
|
|
if (!details)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
details->mNext = *aReturnDetails;
|
|
details->mStart = start;
|
|
details->mEnd = end;
|
|
details->mType = aType;
|
|
RangeData *rd = FindRangeData(range);
|
|
if (rd) {
|
|
details->mTextRangeStyle = rd->mTextRangeStyle;
|
|
}
|
|
*aReturnDetails = details;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::Repaint(nsPresContext* aPresContext)
|
|
{
|
|
PRInt32 arrCount = (PRInt32)mRanges.Length();
|
|
|
|
if (arrCount < 1)
|
|
return NS_OK;
|
|
|
|
PRInt32 i;
|
|
|
|
for (i = 0; i < arrCount; i++)
|
|
{
|
|
nsresult rv = selectFrames(aPresContext, mRanges[i].mRange, PR_TRUE);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetCanCacheFrameOffset(PRBool *aCanCacheFrameOffset)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCanCacheFrameOffset);
|
|
|
|
if (mCachedOffsetForFrame)
|
|
*aCanCacheFrameOffset = mCachedOffsetForFrame->mCanCacheFrameOffset;
|
|
else
|
|
*aCanCacheFrameOffset = PR_FALSE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SetCanCacheFrameOffset(PRBool aCanCacheFrameOffset)
|
|
{
|
|
if (!mCachedOffsetForFrame) {
|
|
mCachedOffsetForFrame = new CachedOffsetForFrame;
|
|
}
|
|
|
|
mCachedOffsetForFrame->mCanCacheFrameOffset = aCanCacheFrameOffset;
|
|
|
|
// clean up cached frame when turn off cache
|
|
// fix bug 207936
|
|
if (!aCanCacheFrameOffset) {
|
|
mCachedOffsetForFrame->mLastCaretFrame = nsnull;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetCachedFrameOffset(nsIFrame *aFrame, PRInt32 inOffset, nsPoint& aPoint)
|
|
{
|
|
if (!mCachedOffsetForFrame) {
|
|
mCachedOffsetForFrame = new CachedOffsetForFrame;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
if (mCachedOffsetForFrame->mCanCacheFrameOffset &&
|
|
mCachedOffsetForFrame->mLastCaretFrame &&
|
|
(aFrame == mCachedOffsetForFrame->mLastCaretFrame) &&
|
|
(inOffset == mCachedOffsetForFrame->mLastContentOffset))
|
|
{
|
|
// get cached frame offset
|
|
aPoint = mCachedOffsetForFrame->mCachedFrameOffset;
|
|
}
|
|
else
|
|
{
|
|
// Recalculate frame offset and cache it. Don't cache a frame offset if
|
|
// GetPointFromOffset fails, though.
|
|
rv = aFrame->GetPointFromOffset(inOffset, &aPoint);
|
|
if (NS_SUCCEEDED(rv) && mCachedOffsetForFrame->mCanCacheFrameOffset) {
|
|
mCachedOffsetForFrame->mCachedFrameOffset = aPoint;
|
|
mCachedOffsetForFrame->mLastCaretFrame = aFrame;
|
|
mCachedOffsetForFrame->mLastContentOffset = inOffset;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetFrameSelection(nsFrameSelection **aFrameSelection) {
|
|
NS_ENSURE_ARG_POINTER(aFrameSelection);
|
|
*aFrameSelection = mFrameSelection;
|
|
NS_IF_ADDREF(*aFrameSelection);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SetAncestorLimiter(nsIContent *aContent)
|
|
{
|
|
if (mFrameSelection)
|
|
mFrameSelection->SetAncestorLimiter(aContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
RangeData*
|
|
nsTypedSelection::FindRangeData(nsIDOMRange* aRange)
|
|
{
|
|
NS_ENSURE_TRUE(aRange, nsnull);
|
|
for (PRUint32 i = 0; i < mRanges.Length(); i++) {
|
|
if (mRanges[i].mRange == aRange)
|
|
return &mRanges[i];
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SetTextRangeStyle(nsIDOMRange *aRange,
|
|
const nsTextRangeStyle &aTextRangeStyle)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aRange);
|
|
RangeData *rd = FindRangeData(aRange);
|
|
if (rd) {
|
|
rd->mTextRangeStyle = aTextRangeStyle;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::StartAutoScrollTimer(nsIFrame *aFrame,
|
|
nsPoint& aPoint,
|
|
PRUint32 aDelay)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Need a frame");
|
|
|
|
nsresult result;
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
if (!mAutoScrollTimer)
|
|
{
|
|
mAutoScrollTimer = new nsAutoScrollTimer();
|
|
|
|
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(aFrame, aPoint);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::StopAutoScrollTimer()
|
|
{
|
|
if (mAutoScrollTimer)
|
|
return mAutoScrollTimer->Stop();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::DoAutoScroll(nsIFrame *aFrame, nsPoint& aPoint)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Need a frame");
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
if (mAutoScrollTimer)
|
|
result = mAutoScrollTimer->Stop();
|
|
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
nsRootPresContext* rootPC = presContext->GetRootPresContext();
|
|
if (!rootPC)
|
|
return NS_OK;
|
|
nsIFrame* rootmostFrame = rootPC->PresShell()->FrameManager()->GetRootFrame();
|
|
nsPoint globalPoint = aPoint + aFrame->GetOffsetTo(rootmostFrame);
|
|
|
|
PRBool didScroll = presContext->PresShell()->
|
|
ScrollFrameRectIntoView(aFrame, nsRect(aPoint, nsSize(1,1)),
|
|
NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
NS_PRESSHELL_SCROLL_ANYWHERE, 0);
|
|
|
|
//
|
|
// Start the AutoScroll timer if necessary.
|
|
//
|
|
|
|
if (didScroll && mAutoScrollTimer)
|
|
{
|
|
nsPoint presContextPoint = globalPoint -
|
|
presContext->PresShell()->FrameManager()->GetRootFrame()->GetOffsetTo(rootmostFrame);
|
|
mAutoScrollTimer->Start(presContext, presContextPoint);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetEnumerator(nsIEnumerator **aIterator)
|
|
{
|
|
nsresult status = NS_ERROR_OUT_OF_MEMORY;
|
|
nsSelectionIterator *iterator = new nsSelectionIterator(this);
|
|
if (iterator && NS_FAILED(status = CallQueryInterface(iterator, aIterator)) )
|
|
delete iterator;
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
/** RemoveAllRanges zeroes the selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::RemoveAllRanges()
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
nsRefPtr<nsPresContext> 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::CharacterDataChanged should do that on DocumentChanged
|
|
}
|
|
|
|
/** AddRange adds the specified range to the selection
|
|
* @param aRange is the range to be added
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::AddRange(nsIDOMRange* aRange)
|
|
{
|
|
nsCOMPtr<nsIRange> range = do_QueryInterface(aRange);
|
|
return AddRange(range);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::AddRange(nsIRange* aRange)
|
|
{
|
|
if (!aRange) return NS_ERROR_NULL_POINTER;
|
|
|
|
// This inserts a table cell range in proper document order
|
|
// and returns NS_OK if range doesn't contain just one table cell
|
|
PRBool didAddRange;
|
|
PRInt32 rangeIndex;
|
|
nsresult result = addTableCellRange(aRange, &didAddRange, &rangeIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (!didAddRange)
|
|
{
|
|
result = AddItem(aRange, &rangeIndex);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
|
|
NS_ASSERTION(rangeIndex >= 0, "Range index not returned");
|
|
setAnchorFocusRange(rangeIndex);
|
|
|
|
// Make sure the caret appears on the next line, if at a newline
|
|
if (mType == nsISelectionController::SELECTION_NORMAL)
|
|
SetInterlinePosition(PR_TRUE);
|
|
|
|
nsRefPtr<nsPresContext> 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());
|
|
}
|
|
|
|
// nsTypedSelection::RemoveRange
|
|
//
|
|
// Removes the given range from the selection. The tricky part is updating
|
|
// the flags on the frames that indicate whether they have a selection or
|
|
// not. There could be several selection ranges on the frame, and clearing
|
|
// the bit would cause the selection to not be drawn, even when there is
|
|
// another range on the frame (bug 346185).
|
|
//
|
|
// We therefore find any ranges that intersect the same nodes as the range
|
|
// being removed, and cause them to set the selected bits back on their
|
|
// selected frames after we've cleared the bit from ours.
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::RemoveRange(nsIDOMRange* aRange)
|
|
{
|
|
nsCOMPtr<nsIRange> range = do_QueryInterface(aRange);
|
|
return RemoveRange(range);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::RemoveRange(nsIRange* aRange)
|
|
{
|
|
if (!aRange)
|
|
return NS_ERROR_INVALID_ARG;
|
|
nsresult rv = RemoveItem(aRange);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsINode* beginNode = aRange->GetStartParent();
|
|
nsINode* endNode = aRange->GetEndParent();
|
|
|
|
// find out the length of the end node, so we can select all of it
|
|
PRInt32 beginOffset, endOffset;
|
|
if (endNode->IsNodeOfType(nsINode::eTEXT)) {
|
|
// Get the length of the text. We can't just use the offset because
|
|
// another range could be touching this text node but not intersect our
|
|
// range.
|
|
beginOffset = 0;
|
|
endOffset = static_cast<nsIContent*>(endNode)->TextLength();
|
|
} else {
|
|
// For non-text nodes, the given offsets should be sufficient.
|
|
beginOffset = aRange->StartOffset();
|
|
endOffset = aRange->EndOffset();
|
|
}
|
|
|
|
// clear the selected bit from the removed range's frames
|
|
nsRefPtr<nsPresContext> presContext;
|
|
GetPresContext(getter_AddRefs(presContext));
|
|
selectFrames(presContext, aRange, PR_FALSE);
|
|
|
|
// add back the selected bit for each range touching our nodes
|
|
nsCOMArray<nsIRange> affectedRanges;
|
|
rv = GetRangesForIntervalCOMArray(beginNode, beginOffset,
|
|
endNode, endOffset,
|
|
PR_TRUE, &affectedRanges);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
for (PRInt32 i = 0; i < affectedRanges.Count(); i ++) {
|
|
selectFrames(presContext, affectedRanges[i], PR_TRUE);
|
|
}
|
|
|
|
PRInt32 cnt = mRanges.Length();
|
|
if (aRange == mAnchorFocusRange) {
|
|
// Reset anchor to LAST range or clear it if there are no ranges.
|
|
setAnchorFocusRange(cnt - 1);
|
|
|
|
// When the selection is user-created it makes sense to scroll the range
|
|
// into view. The spell-check selection, however, is created and destroyed
|
|
// in the background. We don't want to scroll in this case or the view
|
|
// might appear to be moving randomly (bug 337871).
|
|
if (mType != nsISelectionController::SELECTION_SPELLCHECK && cnt > 0)
|
|
ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION, PR_FALSE,
|
|
PR_FALSE);
|
|
}
|
|
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
return mFrameSelection->NotifySelectionListeners(GetType());
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Collapse sets the whole selection to be one point.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::Collapse(nsIDOMNode* aParentNode, PRInt32 aOffset)
|
|
{
|
|
nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
|
|
return Collapse(parentNode, aOffset);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::Collapse(nsINode* aParentNode, PRInt32 aOffset)
|
|
{
|
|
if (!aParentNode)
|
|
return NS_ERROR_INVALID_ARG;
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
mFrameSelection->InvalidateDesiredX();
|
|
if (!IsValidSelectionPoint(mFrameSelection, aParentNode))
|
|
return NS_ERROR_FAILURE;
|
|
nsresult result;
|
|
// Delete all of the current ranges
|
|
nsRefPtr<nsPresContext> presContext;
|
|
GetPresContext(getter_AddRefs(presContext));
|
|
Clear(presContext);
|
|
|
|
// Turn off signal for table selection
|
|
mFrameSelection->ClearTableCellSelection();
|
|
|
|
nsCOMPtr<nsIRange> range = new nsRange();
|
|
if (!range) {
|
|
NS_ASSERTION(PR_FALSE,"Couldn't make a range - nsFrameSelection::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;
|
|
|
|
printf ("Sel. Collapse to %p %s %d\n", content.get(),
|
|
nsAtomCString(content->Tag()).get(), aOffset);
|
|
}
|
|
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;
|
|
return mFrameSelection->NotifySelectionListeners(GetType());
|
|
}
|
|
|
|
/*
|
|
* Sets the whole selection to be one point
|
|
* at the start of the current selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::CollapseToStart()
|
|
{
|
|
PRInt32 cnt;
|
|
nsresult rv = GetRangeCount(&cnt);
|
|
if (NS_FAILED(rv) || cnt <= 0)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Get the first range
|
|
nsIRange* firstRange = mRanges[0].mRange;
|
|
if (!firstRange)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return Collapse(firstRange->GetStartParent(), firstRange->StartOffset());
|
|
}
|
|
|
|
/*
|
|
* Sets the whole selection to be one point
|
|
* at the end of the current selection
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::CollapseToEnd()
|
|
{
|
|
PRInt32 cnt;
|
|
nsresult rv = GetRangeCount(&cnt);
|
|
if (NS_FAILED(rv) || cnt <= 0)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Get the last range
|
|
nsIRange* lastRange = mRanges[cnt-1].mRange;
|
|
if (!lastRange)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return Collapse(lastRange->GetEndParent(), lastRange->EndOffset());
|
|
}
|
|
|
|
/*
|
|
* IsCollapsed -- is the whole selection just one point, or unset?
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetIsCollapsed(PRBool* aIsCollapsed)
|
|
{
|
|
if (!aIsCollapsed)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
PRInt32 cnt = (PRInt32)mRanges.Length();;
|
|
if (cnt == 0)
|
|
{
|
|
*aIsCollapsed = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (cnt != 1)
|
|
{
|
|
*aIsCollapsed = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
*aIsCollapsed = mRanges[0].mRange->Collapsed();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetRangeCount(PRInt32* aRangeCount)
|
|
{
|
|
*aRangeCount = (PRInt32)mRanges.Length();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::GetRangeAt(PRInt32 aIndex, nsIDOMRange** aReturn)
|
|
{
|
|
*aReturn = mRanges.SafeElementAt(aIndex, sEmptyData).mRange;
|
|
if (!*aReturn) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
NS_ADDREF(*aReturn);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIRange*
|
|
nsTypedSelection::GetRangeAt(PRInt32 aIndex)
|
|
{
|
|
return mRanges.SafeElementAt(aIndex, sEmptyData).mRange;
|
|
}
|
|
|
|
/*
|
|
utility function
|
|
*/
|
|
nsresult
|
|
nsTypedSelection::CopyRangeToAnchorFocus(nsIRange *aRange)
|
|
{
|
|
// XXXbz could we just clone into mAnchorFocusRange, or do consumers
|
|
// expect that pointer to not change across this call?
|
|
NS_ENSURE_STATE(mAnchorFocusRange);
|
|
|
|
nsINode* startNode = aRange->GetStartParent();
|
|
nsINode* endNode = aRange->GetEndParent();
|
|
PRInt32 startOffset = aRange->StartOffset();
|
|
PRInt32 endOffset = aRange->EndOffset();;
|
|
if (NS_FAILED(mAnchorFocusRange->SetStart(startNode,startOffset)))
|
|
{
|
|
// XXXbz what is this doing exactly?
|
|
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;
|
|
}
|
|
|
|
void
|
|
nsTypedSelection::ReplaceAnchorFocusRange(nsIRange *aRange)
|
|
{
|
|
nsRefPtr<nsPresContext> presContext;
|
|
GetPresContext(getter_AddRefs(presContext));
|
|
if (presContext) {
|
|
selectFrames(presContext, mAnchorFocusRange, PR_FALSE);
|
|
CopyRangeToAnchorFocus(aRange);
|
|
selectFrames(presContext, mAnchorFocusRange, PR_TRUE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
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
|
|
nsTypedSelection::Extend(nsIDOMNode* aParentNode, PRInt32 aOffset)
|
|
{
|
|
nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
|
|
return Extend(parentNode, aOffset);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::Extend(nsINode* aParentNode, PRInt32 aOffset)
|
|
{
|
|
if (!aParentNode)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
// First, find the range containing the old focus point:
|
|
if (!mAnchorFocusRange)
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
|
|
nsresult res;
|
|
if (!IsValidSelectionPoint(mFrameSelection, aParentNode))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//mFrameSelection->InvalidateDesiredX();
|
|
nsCOMPtr<nsIRange> difRange = new nsRange();
|
|
nsCOMPtr<nsIRange> range;
|
|
|
|
nsINode* anchorNode = GetAnchorNode();
|
|
nsINode* focusNode = GetFocusNode();
|
|
PRInt32 anchorOffset = GetAnchorOffset();
|
|
PRInt32 focusOffset = GetFocusOffset();
|
|
|
|
if (focusNode == aParentNode && focusOffset == aOffset)
|
|
return NS_OK; //same node nothing to do!
|
|
|
|
res = mAnchorFocusRange->CloneRange(getter_AddRefs(range));
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
//range = mAnchorFocusRange;
|
|
|
|
nsINode* startNode = range->GetStartParent();
|
|
nsINode* endNode = range->GetEndParent();
|
|
PRInt32 startOffset = range->StartOffset();
|
|
PRInt32 endOffset = range->EndOffset();;
|
|
|
|
nsDirection dir = GetDirection();
|
|
|
|
//compare anchor to old cursor.
|
|
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
PRInt32 result1 = nsContentUtils::ComparePoints(anchorNode, anchorOffset,
|
|
focusNode, focusOffset);
|
|
//compare old cursor to new cursor
|
|
PRInt32 result2 = nsContentUtils::ComparePoints(focusNode, focusOffset,
|
|
aParentNode, aOffset);
|
|
//compare anchor to new cursor
|
|
PRInt32 result3 = nsContentUtils::ComparePoints(anchorNode, anchorOffset,
|
|
aParentNode, aOffset);
|
|
|
|
if (result2 == 0) //not selecting anywhere
|
|
return NS_OK;
|
|
|
|
nsRefPtr<nsPresContext> 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(range->GetEndParent(), range->EndOffset());
|
|
res |= difRange->SetStart(focusNode, focusOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
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;
|
|
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(focusNode, focusOffset);
|
|
res |= difRange->SetStart(aParentNode, aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
res = range->SetEnd(aParentNode, aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
res = CopyRangeToAnchorFocus(range);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
selectFrames(presContext, difRange, PR_FALSE); // deselect now
|
|
difRange->SetEnd(range->GetEndParent(), range->EndOffset());
|
|
selectFrames(presContext, difRange, PR_TRUE); // must reselect last node maybe more
|
|
}
|
|
else if (result1 >= 0 && result3 <= 0) {//1,a,2 or 1a,2 or 1,a2 or 1a2
|
|
if (GetDirection() == eDirPrevious){
|
|
res = range->SetStart(endNode, endOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
}
|
|
dir = eDirNext;
|
|
res = range->SetEnd(aParentNode, aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
if (focusNode != anchorNode || focusOffset != anchorOffset) {//if collapsed diff dont do anything
|
|
res = difRange->SetStart(focusNode, focusOffset);
|
|
res |= difRange->SetEnd(anchorNode, anchorOffset);
|
|
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(focusNode, focusOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
dir = eDirPrevious;
|
|
res = range->SetStart(aParentNode, aOffset);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
res = CopyRangeToAnchorFocus(range);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
selectFrames(presContext, difRange , PR_FALSE);
|
|
difRange->SetStart(range->GetStartParent(), range->StartOffset());
|
|
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;
|
|
//deselect from a to 1
|
|
if (focusNode != anchorNode || focusOffset!= anchorOffset) {//if collapsed diff dont do anything
|
|
res = difRange->SetStart(anchorNode, anchorOffset);
|
|
res |= difRange->SetEnd(focusNode, focusOffset);
|
|
res |= CopyRangeToAnchorFocus(range);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
selectFrames(presContext, difRange, PR_FALSE);
|
|
}
|
|
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(focusNode, focusOffset);
|
|
res |= difRange->SetStart(range->GetStartParent(), range->StartOffset());
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
selectFrames(presContext, difRange, PR_TRUE);
|
|
res = CopyRangeToAnchorFocus(range);
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
}
|
|
|
|
DEBUG_OUT_RANGE(range);
|
|
#ifdef DEBUG_SELECTION
|
|
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);
|
|
|
|
printf ("Sel. Extend to %p %s %d\n", content.get(),
|
|
nsAtomCString(content->Tag()).get(), aOffset);
|
|
}
|
|
else {
|
|
printf ("Sel. Extend set to null parent.\n");
|
|
}
|
|
#endif
|
|
return mFrameSelection->NotifySelectionListeners(GetType());
|
|
}
|
|
|
|
static nsresult
|
|
GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
|
|
{
|
|
NS_ASSERTION((aChild && aParent), "bad args");
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
|
|
nsCOMPtr<nsIContent> cChild = do_QueryInterface(aChild);
|
|
|
|
if (!cChild || !content)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
aOffset = content->IndexOf(cChild);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SelectAllChildren(nsIDOMNode* aParentNode)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aParentNode);
|
|
|
|
if (mFrameSelection)
|
|
{
|
|
mFrameSelection->PostReason(nsISelectionListener::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(nsISelectionListener::SELECTALL_REASON);
|
|
}
|
|
result = Extend(aParentNode, numBodyChildren+1);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::ContainsNode(nsIDOMNode* aNode, PRBool aAllowPartial,
|
|
PRBool* aYes)
|
|
{
|
|
nsresult rv;
|
|
if (!aYes)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aYes = PR_FALSE;
|
|
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
if (mRanges.Length() == 0 || !node)
|
|
return NS_OK;
|
|
|
|
// XXXbz this duplicates the GetNodeLength code in nsRange.cpp
|
|
PRUint32 nodeLength;
|
|
PRBool isData = node->IsNodeOfType(nsINode::eDATA_NODE);
|
|
if (isData) {
|
|
nodeLength = static_cast<nsIContent*>(node.get())->TextLength();
|
|
} else {
|
|
nodeLength = node->GetChildCount();
|
|
}
|
|
|
|
nsCOMArray<nsIRange> overlappingRanges;
|
|
rv = GetRangesForIntervalCOMArray(node, 0, node, nodeLength,
|
|
PR_FALSE, &overlappingRanges);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (overlappingRanges.Count() == 0)
|
|
return NS_OK; // no ranges overlap
|
|
|
|
// if the caller said partial intersections are OK, we're done
|
|
if (aAllowPartial) {
|
|
*aYes = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// text nodes always count as inside
|
|
if (isData) {
|
|
*aYes = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// The caller wants to know if the node is entirely within the given range,
|
|
// so we have to check all intersecting ranges.
|
|
for (PRInt32 i = 0; i < overlappingRanges.Count(); i ++) {
|
|
PRBool nodeStartsBeforeRange, nodeEndsAfterRange;
|
|
if (NS_SUCCEEDED(nsRange::CompareNodeToRange(node, overlappingRanges[i],
|
|
&nodeStartsBeforeRange,
|
|
&nodeEndsAfterRange))) {
|
|
if (!nodeStartsBeforeRange && !nodeEndsAfterRange) {
|
|
*aYes = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsTypedSelection::GetPresContext(nsPresContext **aPresContext)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_FAILURE;//nothing to do
|
|
nsIPresShell *shell = mFrameSelection->GetShell();
|
|
|
|
if (!shell)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
NS_IF_ADDREF(*aPresContext = shell->GetPresContext());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::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
|
|
|
|
nsIPresShell *shell = mFrameSelection->GetShell();
|
|
|
|
mPresShellWeak = do_GetWeakReference(shell); // the presshell owns us, so no addref
|
|
if (mPresShellWeak)
|
|
NS_ADDREF(*aPresShell = shell);
|
|
return rv;
|
|
}
|
|
|
|
nsIFrame *
|
|
nsTypedSelection::GetSelectionAnchorGeometry(SelectionRegion aRegion,
|
|
nsRect *aRect)
|
|
{
|
|
if (!mFrameSelection)
|
|
return nsnull; // nothing to do
|
|
|
|
NS_ENSURE_TRUE(aRect, nsnull);
|
|
|
|
aRect->SetRect(0, 0, 0, 0);
|
|
|
|
nsINode *node = nsnull;
|
|
PRInt32 nodeOffset = 0;
|
|
nsIFrame *frame = nsnull;
|
|
|
|
switch (aRegion) {
|
|
case nsISelectionController::SELECTION_ANCHOR_REGION:
|
|
node = GetAnchorNode();
|
|
nodeOffset = GetAnchorOffset();
|
|
break;
|
|
case nsISelectionController::SELECTION_FOCUS_REGION:
|
|
node = GetFocusNode();
|
|
nodeOffset = GetFocusOffset();
|
|
break;
|
|
default:
|
|
return nsnull;
|
|
}
|
|
|
|
if (!node)
|
|
return nsnull;
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(node);
|
|
NS_ENSURE_TRUE(content.get(), nsnull);
|
|
PRInt32 frameOffset = 0;
|
|
frame = mFrameSelection->GetFrameForNodeOffset(content, nodeOffset,
|
|
mFrameSelection->GetHint(),
|
|
&frameOffset);
|
|
if (!frame)
|
|
return nsnull;
|
|
|
|
// Figure out what node type we have, then get the
|
|
// appropriate rect for it's nodeOffset.
|
|
PRBool isText = node->IsNodeOfType(nsINode::eTEXT);
|
|
|
|
nsPoint pt(0, 0);
|
|
if (isText) {
|
|
nsIFrame* childFrame = nsnull;
|
|
frameOffset = 0;
|
|
nsresult rv =
|
|
frame->GetChildFrameContainingOffset(nodeOffset,
|
|
mFrameSelection->GetHint(),
|
|
&frameOffset, &childFrame);
|
|
if (NS_FAILED(rv))
|
|
return nsnull;
|
|
if (!childFrame)
|
|
return nsnull;
|
|
|
|
frame = childFrame;
|
|
|
|
// Get the x coordinate of the offset into the text frame.
|
|
rv = GetCachedFrameOffset(frame, nodeOffset, pt);
|
|
if (NS_FAILED(rv))
|
|
return nsnull;
|
|
}
|
|
|
|
// Return the rect relative to the frame, with zero width.
|
|
if (isText) {
|
|
aRect->x = pt.x;
|
|
} else if (mFrameSelection->GetHint() == nsFrameSelection::HINTLEFT) {
|
|
// It's the frame's right edge we're interested in.
|
|
aRect->x = frame->GetRect().width;
|
|
}
|
|
aRect->height = frame->GetRect().height;
|
|
|
|
return frame;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::ScrollSelectionIntoViewEvent::Run()
|
|
{
|
|
if (!mTypedSelection)
|
|
return NS_OK; // event revoked
|
|
|
|
mTypedSelection->mScrollEvent.Forget();
|
|
mTypedSelection->ScrollIntoView(mRegion, PR_TRUE, PR_TRUE);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::PostScrollSelectionIntoViewEvent(SelectionRegion aRegion)
|
|
{
|
|
// If we've already posted an event, revoke it and place a new one at the
|
|
// end of the queue to make sure that any new pending reflow events are
|
|
// processed before we scroll. This will insure that we scroll to the
|
|
// correct place on screen.
|
|
mScrollEvent.Revoke();
|
|
|
|
nsRefPtr<ScrollSelectionIntoViewEvent> ev =
|
|
new ScrollSelectionIntoViewEvent(this, aRegion);
|
|
nsresult rv = NS_DispatchToCurrentThread(ev);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mScrollEvent = ev;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::ScrollIntoView(SelectionRegion aRegion, PRBool aIsSynchronous,
|
|
PRInt16 aVPercent, PRInt16 aHPercent)
|
|
{
|
|
return ScrollIntoView(aRegion, aIsSynchronous, PR_FALSE,
|
|
aVPercent, aHPercent);
|
|
}
|
|
|
|
nsresult
|
|
nsTypedSelection::ScrollIntoView(SelectionRegion aRegion,
|
|
PRBool aIsSynchronous, PRBool aDoFlush,
|
|
PRInt16 aVPercent, PRInt16 aHPercent)
|
|
{
|
|
nsresult result;
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
if (mFrameSelection->GetBatching())
|
|
return NS_OK;
|
|
|
|
if (!aIsSynchronous)
|
|
return PostScrollSelectionIntoViewEvent(aRegion);
|
|
|
|
//
|
|
// 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) || !presShell)
|
|
return result;
|
|
nsRefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (caret)
|
|
{
|
|
// Now that text frame character offsets are always valid (though not
|
|
// necessarily correct), the worst that will happen if we don't flush here
|
|
// is that some callers might scroll to the wrong place. Those should
|
|
// either manually flush if they're in a safe position for it or use the
|
|
// async version of this method.
|
|
if (aDoFlush) {
|
|
presShell->FlushPendingNotifications(Flush_Layout);
|
|
|
|
// Reget the presshell, since it might have gone away.
|
|
result = GetPresShell(getter_AddRefs(presShell));
|
|
if (NS_FAILED(result) || !presShell)
|
|
return result;
|
|
}
|
|
|
|
StCaretHider caretHider(caret); // stack-based class hides and shows the caret
|
|
|
|
//
|
|
// Scroll the selection region into view.
|
|
//
|
|
|
|
nsRect rect;
|
|
nsIFrame* frame = GetSelectionAnchorGeometry(aRegion, &rect);
|
|
if (!frame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
presShell->ScrollFrameRectIntoView(frame, rect, aVPercent, aHPercent, 0);
|
|
return NS_OK;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::AddSelectionListener(nsISelectionListener* aNewListener)
|
|
{
|
|
if (!aNewListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
return mSelectionListeners.AppendObject(aNewListener) ? NS_OK : NS_ERROR_FAILURE; // addrefs
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::RemoveSelectionListener(nsISelectionListener* aListenerToRemove)
|
|
{
|
|
if (!aListenerToRemove )
|
|
return NS_ERROR_NULL_POINTER;
|
|
return mSelectionListeners.RemoveObject(aListenerToRemove) ? NS_OK : NS_ERROR_FAILURE; // releases
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsTypedSelection::NotifySelectionListeners()
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
|
|
if (mFrameSelection->GetBatching()){
|
|
mFrameSelection->SetDirty();
|
|
return NS_OK;
|
|
}
|
|
PRInt32 cnt = mSelectionListeners.Count();
|
|
nsCOMArray<nsISelectionListener> selectionListeners(mSelectionListeners);
|
|
|
|
nsCOMPtr<nsIDOMDocument> domdoc;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
nsresult rv = GetPresShell(getter_AddRefs(shell));
|
|
if (NS_SUCCEEDED(rv) && shell)
|
|
domdoc = do_QueryInterface(shell->GetDocument());
|
|
short reason = mFrameSelection->PopReason();
|
|
for (PRInt32 i = 0; i < cnt; i++)
|
|
{
|
|
nsISelectionListener* thisListener = selectionListeners[i];
|
|
if (thisListener)
|
|
thisListener->NotifySelectionChanged(domdoc, this, reason);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::StartBatchChanges()
|
|
{
|
|
if (mFrameSelection)
|
|
mFrameSelection->StartBatchChanges();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::EndBatchChanges()
|
|
{
|
|
if (mFrameSelection)
|
|
mFrameSelection->EndBatchChanges();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::DeleteFromDocument()
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_OK;//nothing to do
|
|
return mFrameSelection->DeleteFromDocument();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::Modify(const nsAString& aAlter, const nsAString& aDirection,
|
|
const nsAString& aGranularity)
|
|
{
|
|
// Silently exit if there's no selection or no focus node.
|
|
if (!mFrameSelection || !GetAnchorFocusRange() || !GetFocusNode()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aAlter.LowerCaseEqualsLiteral("move") &&
|
|
!aAlter.LowerCaseEqualsLiteral("extend")) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (!aDirection.LowerCaseEqualsLiteral("forward") &&
|
|
!aDirection.LowerCaseEqualsLiteral("backward") &&
|
|
!aDirection.LowerCaseEqualsLiteral("left") &&
|
|
!aDirection.LowerCaseEqualsLiteral("right")) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// Line moves are always visual.
|
|
PRBool visual = aDirection.LowerCaseEqualsLiteral("left") ||
|
|
aDirection.LowerCaseEqualsLiteral("right") ||
|
|
aGranularity.LowerCaseEqualsLiteral("line");
|
|
|
|
PRBool forward = aDirection.LowerCaseEqualsLiteral("forward") ||
|
|
aDirection.LowerCaseEqualsLiteral("right");
|
|
|
|
PRBool extend = aAlter.LowerCaseEqualsLiteral("extend");
|
|
|
|
// The PRUint32 casts below prevent an enum mismatch warning.
|
|
nsSelectionAmount amount;
|
|
PRUint32 keycode;
|
|
if (aGranularity.LowerCaseEqualsLiteral("character")) {
|
|
amount = eSelectCharacter;
|
|
keycode = forward ? (PRUint32) nsIDOMKeyEvent::DOM_VK_RIGHT :
|
|
(PRUint32) nsIDOMKeyEvent::DOM_VK_LEFT;
|
|
}
|
|
else if (aGranularity.LowerCaseEqualsLiteral("word")) {
|
|
amount = eSelectWord;
|
|
keycode = forward ? (PRUint32) nsIDOMKeyEvent::DOM_VK_RIGHT :
|
|
(PRUint32) nsIDOMKeyEvent::DOM_VK_LEFT;
|
|
}
|
|
else if (aGranularity.LowerCaseEqualsLiteral("line")) {
|
|
amount = eSelectLine;
|
|
keycode = forward ? (PRUint32) nsIDOMKeyEvent::DOM_VK_DOWN :
|
|
(PRUint32) nsIDOMKeyEvent::DOM_VK_UP;
|
|
}
|
|
else if (aGranularity.LowerCaseEqualsLiteral("lineboundary")) {
|
|
amount = eSelectLine;
|
|
keycode = forward ? (PRUint32) nsIDOMKeyEvent::DOM_VK_END :
|
|
(PRUint32) nsIDOMKeyEvent::DOM_VK_HOME;
|
|
}
|
|
else if (aGranularity.LowerCaseEqualsLiteral("sentence") ||
|
|
aGranularity.LowerCaseEqualsLiteral("sentenceboundary") ||
|
|
aGranularity.LowerCaseEqualsLiteral("paragraph") ||
|
|
aGranularity.LowerCaseEqualsLiteral("paragraphboundary") ||
|
|
aGranularity.LowerCaseEqualsLiteral("documentboundary")) {
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
else {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// If the anchor doesn't equal the focus and we try to move without first
|
|
// collapsing the selection, MoveCaret will collapse the selection and quit.
|
|
// To avoid this, we need to collapse the selection first.
|
|
nsresult rv = NS_OK;
|
|
if (!extend) {
|
|
nsINode* focusNode = GetFocusNode();
|
|
// We should have checked earlier that there was a focus node.
|
|
NS_ENSURE_TRUE(focusNode, NS_ERROR_UNEXPECTED);
|
|
PRInt32 focusOffset = GetFocusOffset();
|
|
Collapse(focusNode, focusOffset);
|
|
}
|
|
|
|
// If the base level of the focused frame is odd, we may have to swap the
|
|
// direction of the keycode.
|
|
nsIFrame *frame;
|
|
PRInt32 offset;
|
|
rv = GetPrimaryFrameForFocusNode(&frame, &offset, visual);
|
|
if (NS_SUCCEEDED(rv) && frame) {
|
|
nsBidiLevel baseLevel = nsBidiPresUtils::GetFrameBaseLevel(frame);
|
|
|
|
if (baseLevel & 1) {
|
|
if (!visual && keycode == nsIDOMKeyEvent::DOM_VK_RIGHT) {
|
|
keycode = nsIDOMKeyEvent::DOM_VK_LEFT;
|
|
}
|
|
else if (!visual && keycode == nsIDOMKeyEvent::DOM_VK_LEFT) {
|
|
keycode = nsIDOMKeyEvent::DOM_VK_RIGHT;
|
|
}
|
|
else if (visual && keycode == nsIDOMKeyEvent::DOM_VK_HOME) {
|
|
keycode = nsIDOMKeyEvent::DOM_VK_END;
|
|
}
|
|
else if (visual && keycode == nsIDOMKeyEvent::DOM_VK_END) {
|
|
keycode = nsIDOMKeyEvent::DOM_VK_HOME;
|
|
}
|
|
}
|
|
}
|
|
|
|
// MoveCaret will return an error if it can't move in the specified
|
|
// direction, but we just ignore this error unless it's a line move, in which
|
|
// case we call nsISelectionController::CompleteMove to move the cursor to
|
|
// the beginning/end of the line.
|
|
rv = mFrameSelection->MoveCaret(keycode, extend, amount, visual);
|
|
|
|
if (aGranularity.LowerCaseEqualsLiteral("line") && NS_FAILED(rv)) {
|
|
nsCOMPtr<nsISelectionController> shell =
|
|
do_QueryInterface(mFrameSelection->GetShell());
|
|
if (!shell)
|
|
return NS_OK;
|
|
shell->CompleteMove(forward, extend);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
/** SelectionLanguageChange modifies the cursor Bidi level after a change in keyboard direction
|
|
* @param aLangRTL is PR_TRUE if the new language is right-to-left or PR_FALSE if the new language is left-to-right
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsTypedSelection::SelectionLanguageChange(PRBool aLangRTL)
|
|
{
|
|
if (!mFrameSelection)
|
|
return NS_ERROR_NOT_INITIALIZED; // Can't do selection
|
|
nsresult result;
|
|
nsIFrame *focusFrame = 0;
|
|
|
|
result = GetPrimaryFrameForFocusNode(&focusFrame, nsnull, PR_FALSE);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
if (!focusFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
PRInt32 frameStart, frameEnd;
|
|
focusFrame->GetOffsets(frameStart, frameEnd);
|
|
nsRefPtr<nsPresContext> context;
|
|
PRUint8 levelBefore, levelAfter;
|
|
result = GetPresContext(getter_AddRefs(context));
|
|
if (NS_FAILED(result) || !context)
|
|
return result?result:NS_ERROR_FAILURE;
|
|
|
|
PRUint8 level = NS_GET_EMBEDDING_LEVEL(focusFrame);
|
|
PRInt32 focusOffset = GetFocusOffset();
|
|
if ((focusOffset != frameStart) && (focusOffset != frameEnd))
|
|
// the cursor is not at a frame boundary, so the level of both the characters (logically) before and after the cursor
|
|
// is equal to the frame level
|
|
levelBefore = levelAfter = level;
|
|
else {
|
|
// the cursor is at a frame boundary, so use GetPrevNextBidiLevels to find the level of the characters
|
|
// before and after the cursor
|
|
nsCOMPtr<nsIContent> focusContent = do_QueryInterface(GetFocusNode());
|
|
/*
|
|
nsFrameSelection::HINT hint;
|
|
|
|
if ((focusOffset == frameStart && level) // beginning of an RTL frame
|
|
|| (focusOffset == frameEnd && !level)) { // end of an LTR frame
|
|
hint = nsFrameSelection::HINTRIGHT;
|
|
}
|
|
else { // end of an RTL frame or beginning of an LTR frame
|
|
hint = nsFrameSelection::HINTLEFT;
|
|
}
|
|
mFrameSelection->SetHint(hint);
|
|
*/
|
|
nsPrevNextBidiLevels levels = mFrameSelection->
|
|
GetPrevNextBidiLevels(focusContent, focusOffset, PR_FALSE);
|
|
|
|
levelBefore = levels.mLevelBefore;
|
|
levelAfter = levels.mLevelAfter;
|
|
}
|
|
|
|
if ((levelBefore & 1) == (levelAfter & 1)) {
|
|
// if cursor is between two characters with the same orientation, changing the keyboard language
|
|
// must toggle the cursor level between the level of the character with the lowest level
|
|
// (if the new language corresponds to the orientation of that character) and this level plus 1
|
|
// (if the new language corresponds to the opposite orientation)
|
|
if ((level != levelBefore) && (level != levelAfter))
|
|
level = NS_MIN(levelBefore, levelAfter);
|
|
if ((level & 1) == aLangRTL)
|
|
mFrameSelection->SetCaretBidiLevel(level);
|
|
else
|
|
mFrameSelection->SetCaretBidiLevel(level + 1);
|
|
}
|
|
else {
|
|
// if cursor is between characters with opposite orientations, changing the keyboard language must change
|
|
// the cursor level to that of the adjacent character with the orientation corresponding to the new language.
|
|
if ((levelBefore & 1) == aLangRTL)
|
|
mFrameSelection->SetCaretBidiLevel(levelBefore);
|
|
else
|
|
mFrameSelection->SetCaretBidiLevel(levelAfter);
|
|
}
|
|
|
|
// The caret might have moved, so invalidate the desired X position
|
|
// for future usages of up-arrow or down-arrow
|
|
mFrameSelection->InvalidateDesiredX();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// nsAutoCopyListener
|
|
|
|
nsAutoCopyListener* nsAutoCopyListener::sInstance = nsnull;
|
|
|
|
NS_IMPL_ISUPPORTS1(nsAutoCopyListener, nsISelectionListener)
|
|
|
|
/*
|
|
* What we do now:
|
|
* On every selection change, we copy to the clipboard anew, creating a
|
|
* HTML buffer, a transferable, an nsISupportsString and
|
|
* a huge mess every time. This is basically what nsPresShell::DoCopy does
|
|
* to move the selection into the clipboard for Edit->Copy.
|
|
*
|
|
* What we should do, to make our end of the deal faster:
|
|
* Create a singleton transferable with our own magic converter. When selection
|
|
* changes (use a quick cache to detect ``real'' changes), we put the new
|
|
* nsISelection in the transferable. Our magic converter will take care of
|
|
* transferable->whatever-other-format when the time comes to actually
|
|
* hand over the clipboard contents.
|
|
*
|
|
* Other issues:
|
|
* - which X clipboard should we populate?
|
|
* - should we use a different one than Edit->Copy, so that inadvertant
|
|
* selections (or simple clicks, which currently cause a selection
|
|
* notification, regardless of if they're in the document which currently has
|
|
* selection!) don't lose the contents of the ``application''? Or should we
|
|
* just put some intelligence in the ``is this a real selection?'' code to
|
|
* protect our selection against clicks in other documents that don't create
|
|
* selections?
|
|
* - maybe we should just never clear the X clipboard? That would make this
|
|
* problem just go away, which is very tempting.
|
|
*/
|
|
|
|
NS_IMETHODIMP
|
|
nsAutoCopyListener::NotifySelectionChanged(nsIDOMDocument *aDoc,
|
|
nsISelection *aSel, PRInt16 aReason)
|
|
{
|
|
if (!(aReason & nsISelectionListener::MOUSEUP_REASON ||
|
|
aReason & nsISelectionListener::SELECTALL_REASON ||
|
|
aReason & nsISelectionListener::KEYPRESS_REASON))
|
|
return NS_OK; //dont care if we are still dragging
|
|
|
|
PRBool collapsed;
|
|
if (!aDoc || !aSel ||
|
|
NS_FAILED(aSel->GetIsCollapsed(&collapsed)) || collapsed) {
|
|
#ifdef DEBUG_CLIPBOARD
|
|
fprintf(stderr, "CLIPBOARD: no selection/collapsed selection\n");
|
|
#endif
|
|
/* clear X clipboard? */
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
|
|
|
|
// call the copy code
|
|
return nsCopySupport::HTMLCopy(aSel, doc, nsIClipboard::kSelectionClipboard);
|
|
}
|