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268 lines
11 KiB
C++
268 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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*
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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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#ifndef nsTextServicesDocument_h__
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#define nsTextServicesDocument_h__
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#include "nsCOMPtr.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMRange.h"
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#include "nsIContent.h"
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#include "nsIContentIterator.h"
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#include "nsIEditor.h"
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#include "nsIEditActionListener.h"
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#include "nsITextServicesDocument.h"
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#include "nsTArray.h"
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#include "nsISelectionController.h"
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#include "nsITextServicesFilter.h"
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#include "nsWeakReference.h"
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#include "nsCycleCollectionParticipant.h"
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class nsIRangeUtils;
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class OffsetEntry;
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/** implementation of a text services object.
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*
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*/
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class nsTextServicesDocument : public nsITextServicesDocument,
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public nsIEditActionListener
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{
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private:
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static nsIAtom *sAAtom;
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static nsIAtom *sAddressAtom;
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static nsIAtom *sBigAtom;
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static nsIAtom *sBlinkAtom;
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static nsIAtom *sBAtom;
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static nsIAtom *sCiteAtom;
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static nsIAtom *sCodeAtom;
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static nsIAtom *sDfnAtom;
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static nsIAtom *sEmAtom;
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static nsIAtom *sFontAtom;
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static nsIAtom *sIAtom;
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static nsIAtom *sKbdAtom;
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static nsIAtom *sKeygenAtom;
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static nsIAtom *sNobrAtom;
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static nsIAtom *sSAtom;
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static nsIAtom *sSampAtom;
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static nsIAtom *sSmallAtom;
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static nsIAtom *sSpacerAtom;
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static nsIAtom *sSpanAtom;
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static nsIAtom *sStrikeAtom;
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static nsIAtom *sStrongAtom;
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static nsIAtom *sSubAtom;
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static nsIAtom *sSupAtom;
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static nsIAtom *sTtAtom;
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static nsIAtom *sUAtom;
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static nsIAtom *sVarAtom;
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static nsIAtom *sWbrAtom;
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typedef enum { eIsDone=0, // No iterator (I), or iterator doesn't point to anything valid.
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eValid, // I points to first text node (TN) in current block (CB).
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ePrev, // No TN in CB, I points to first TN in prev block.
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eNext // No TN in CB, I points to first TN in next block.
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} TSDIteratorStatus;
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nsCOMPtr<nsIDOMDocument> mDOMDocument;
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nsCOMPtr<nsISelectionController>mSelCon;
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nsWeakPtr mEditor; // avoid a cycle with the spell checker and editor
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nsCOMPtr<nsIContentIterator> mIterator;
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TSDIteratorStatus mIteratorStatus;
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nsCOMPtr<nsIContent> mPrevTextBlock;
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nsCOMPtr<nsIContent> mNextTextBlock;
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nsTArray<OffsetEntry*> mOffsetTable;
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PRInt32 mSelStartIndex;
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PRInt32 mSelStartOffset;
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PRInt32 mSelEndIndex;
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PRInt32 mSelEndOffset;
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nsCOMPtr<nsIDOMRange> mExtent;
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nsCOMPtr<nsITextServicesFilter> mTxtSvcFilter;
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static nsIRangeUtils* sRangeHelper;
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public:
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/** The default constructor.
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*/
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nsTextServicesDocument();
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/** The default destructor.
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*/
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virtual ~nsTextServicesDocument();
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/** To be called at module init
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*/
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static void RegisterAtoms();
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/** To be called at module shutdown
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*/
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static void Shutdown();
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/* Macro for AddRef(), Release(), and QueryInterface() */
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsTextServicesDocument, nsITextServicesDocument)
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/* nsITextServicesDocument method implementations. */
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NS_IMETHOD InitWithEditor(nsIEditor *aEditor);
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NS_IMETHOD GetDocument(nsIDOMDocument **aDoc);
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NS_IMETHOD SetExtent(nsIDOMRange* aDOMRange);
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NS_IMETHOD ExpandRangeToWordBoundaries(nsIDOMRange *aRange);
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NS_IMETHOD SetFilter(nsITextServicesFilter *aFilter);
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NS_IMETHOD GetCurrentTextBlock(nsString *aStr);
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NS_IMETHOD FirstBlock();
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NS_IMETHOD LastSelectedBlock(TSDBlockSelectionStatus *aSelStatus, PRInt32 *aSelOffset, PRInt32 *aSelLength);
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NS_IMETHOD PrevBlock();
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NS_IMETHOD NextBlock();
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NS_IMETHOD IsDone(PRBool *aIsDone);
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NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength);
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NS_IMETHOD ScrollSelectionIntoView();
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NS_IMETHOD DeleteSelection();
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NS_IMETHOD InsertText(const nsString *aText);
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/* nsIEditActionListener method implementations. */
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NS_IMETHOD WillInsertNode(nsIDOMNode *aNode,
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nsIDOMNode *aParent,
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PRInt32 aPosition);
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NS_IMETHOD DidInsertNode(nsIDOMNode *aNode,
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nsIDOMNode *aParent,
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PRInt32 aPosition,
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nsresult aResult);
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NS_IMETHOD WillDeleteNode(nsIDOMNode *aChild);
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NS_IMETHOD DidDeleteNode(nsIDOMNode *aChild, nsresult aResult);
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NS_IMETHOD WillSplitNode(nsIDOMNode * aExistingRightNode,
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PRInt32 aOffset);
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NS_IMETHOD DidSplitNode(nsIDOMNode *aExistingRightNode,
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PRInt32 aOffset,
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nsIDOMNode *aNewLeftNode,
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nsresult aResult);
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NS_IMETHOD WillJoinNodes(nsIDOMNode *aLeftNode,
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nsIDOMNode *aRightNode,
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nsIDOMNode *aParent);
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NS_IMETHOD DidJoinNodes(nsIDOMNode *aLeftNode,
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nsIDOMNode *aRightNode,
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nsIDOMNode *aParent,
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nsresult aResult);
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// these listen methods are unused:
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NS_IMETHOD WillCreateNode(const nsAString& aTag, nsIDOMNode *aParent, PRInt32 aPosition);
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NS_IMETHOD DidCreateNode(const nsAString& aTag, nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aPosition, nsresult aResult);
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NS_IMETHOD WillInsertText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, const nsAString &aString);
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NS_IMETHOD DidInsertText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, const nsAString &aString, nsresult aResult);
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NS_IMETHOD WillDeleteText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, PRInt32 aLength);
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NS_IMETHOD DidDeleteText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, PRInt32 aLength, nsresult aResult);
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NS_IMETHOD WillDeleteSelection(nsISelection *aSelection);
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NS_IMETHOD DidDeleteSelection(nsISelection *aSelection);
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/* Helper functions */
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static nsresult ComparePoints(nsIDOMNode *aParent1, PRInt32 aOffset1, nsIDOMNode *aParent2, PRInt32 aOffset2, PRInt32 *aResult);
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static nsresult GetRangeEndPoints(nsIDOMRange *aRange, nsIDOMNode **aParent1, PRInt32 *aOffset1, nsIDOMNode **aParent2, PRInt32 *aOffset2);
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static nsresult CreateRange(nsIDOMNode *aStartParent, PRInt32 aStartOffset, nsIDOMNode *aEndParent, PRInt32 aEndOffset, nsIDOMRange **aRange);
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private:
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/* nsTextServicesDocument private methods. */
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nsresult CreateContentIterator(nsIDOMRange *aRange, nsIContentIterator **aIterator);
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nsresult GetDocumentContentRootNode(nsIDOMNode **aNode);
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nsresult CreateDocumentContentRange(nsIDOMRange **aRange);
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nsresult CreateDocumentContentRootToNodeOffsetRange(nsIDOMNode *aParent, PRInt32 aOffset, PRBool aToStart, nsIDOMRange **aRange);
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nsresult CreateDocumentContentIterator(nsIContentIterator **aIterator);
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nsresult AdjustContentIterator();
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static nsresult FirstTextNode(nsIContentIterator *aIterator, TSDIteratorStatus *IteratorStatus);
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static nsresult LastTextNode(nsIContentIterator *aIterator, TSDIteratorStatus *IteratorStatus);
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static nsresult FirstTextNodeInCurrentBlock(nsIContentIterator *aIterator);
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static nsresult FirstTextNodeInPrevBlock(nsIContentIterator *aIterator);
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static nsresult FirstTextNodeInNextBlock(nsIContentIterator *aIterator);
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nsresult GetFirstTextNodeInPrevBlock(nsIContent **aContent);
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nsresult GetFirstTextNodeInNextBlock(nsIContent **aContent);
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static PRBool IsBlockNode(nsIContent *aContent);
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static PRBool IsTextNode(nsIContent *aContent);
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static PRBool IsTextNode(nsIDOMNode *aNode);
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static PRBool DidSkip(nsIContentIterator* aFilteredIter);
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static void ClearDidSkip(nsIContentIterator* aFilteredIter);
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static PRBool HasSameBlockNodeParent(nsIContent *aContent1, nsIContent *aContent2);
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nsresult SetSelectionInternal(PRInt32 aOffset, PRInt32 aLength, PRBool aDoUpdate);
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nsresult GetSelection(TSDBlockSelectionStatus *aSelStatus, PRInt32 *aSelOffset, PRInt32 *aSelLength);
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nsresult GetCollapsedSelection(TSDBlockSelectionStatus *aSelStatus, PRInt32 *aSelOffset, PRInt32 *aSelLength);
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nsresult GetUncollapsedSelection(TSDBlockSelectionStatus *aSelStatus, PRInt32 *aSelOffset, PRInt32 *aSelLength);
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PRBool SelectionIsCollapsed();
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PRBool SelectionIsValid();
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static nsresult CreateOffsetTable(nsTArray<OffsetEntry*> *aOffsetTable,
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nsIContentIterator *aIterator,
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TSDIteratorStatus *aIteratorStatus,
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nsIDOMRange *aIterRange,
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nsString *aStr);
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static nsresult ClearOffsetTable(nsTArray<OffsetEntry*> *aOffsetTable);
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static nsresult NodeHasOffsetEntry(nsTArray<OffsetEntry*> *aOffsetTable,
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nsIDOMNode *aNode,
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PRBool *aHasEntry,
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PRInt32 *aEntryIndex);
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nsresult RemoveInvalidOffsetEntries();
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nsresult SplitOffsetEntry(PRInt32 aTableIndex, PRInt32 aOffsetIntoEntry);
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static nsresult FindWordBounds(nsTArray<OffsetEntry*> *offsetTable,
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nsString *blockStr,
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nsIDOMNode *aNode, PRInt32 aNodeOffset,
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nsIDOMNode **aWordStartNode,
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PRInt32 *aWordStartOffset,
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nsIDOMNode **aWordEndNode,
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PRInt32 *aWordEndOffset);
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#ifdef DEBUG_kin
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void PrintOffsetTable();
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void PrintContentNode(nsIContent *aContent);
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#endif
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};
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#endif // nsTextServicesDocument_h__
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