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nsXMLPrettyPrinter.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Jonas Sicking <jonas@sicking.cc> (Original author)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038  
00039 #ifndef nsXMLPrettyPrinter_h__
00040 #define nsXMLPrettyPrinter_h__
00041 
00042 #include "nsStubDocumentObserver.h"
00043 #include "nsIDocument.h"
00044 #include "nsCOMPtr.h"
00045 
00046 class nsXMLPrettyPrinter : public nsStubDocumentObserver
00047 {
00048 public:
00049     nsXMLPrettyPrinter();
00050     virtual ~nsXMLPrettyPrinter();
00051 
00052     NS_DECL_ISUPPORTS
00053 
00054     // nsIDocumentObserver
00055     virtual void BeginUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);
00056     virtual void EndUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);
00057     virtual void AttributeChanged(nsIDocument* aDocument, nsIContent* aContent,
00058                                   PRInt32 aNameSpaceID, nsIAtom* aAttribute,
00059                                   PRInt32 aModType);
00060     virtual void ContentAppended(nsIDocument* aDocument,
00061                                  nsIContent* aContainer,
00062                                  PRInt32 aNewIndexInContainer);
00063     virtual void ContentInserted(nsIDocument* aDocument,
00064                                  nsIContent* aContainer, nsIContent* aChild,
00065                                  PRInt32 aIndexInContainer);
00066     virtual void ContentRemoved(nsIDocument* aDocument, nsIContent* aContainer,
00067                                 nsIContent* aChild, PRInt32 aIndexInContainer);
00068     virtual void DocumentWillBeDestroyed(nsIDocument* aDocument);
00069     
00076     nsresult PrettyPrint(nsIDocument* aDocument);
00077 
00078 private:
00085     void MaybeUnhook(nsIContent* aContent);
00086 
00087     nsIDocument* mDocument; //weak. Set as long as we're observing the document
00088     PRUint32 mUpdateDepth;
00089     PRPackedBool mUnhookPending;
00090 };
00091 
00092 nsresult NS_NewXMLPrettyPrinter(nsXMLPrettyPrinter** aPrinter);
00093 
00094 #endif //nsXMLPrettyPrinter_h__