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nsIChangeManager.idl
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00001 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is Mozilla Communicator.
00017  *
00018  * The Initial Developer of the Original Code is
00019  * Netscape Communications Corp.
00020  * Portions created by the Initial Developer are Copyright (C) 1999
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Mike Pinkerton
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
00030  * of those above. If you wish to allow use of your version of this file only
00031  * under the terms of either the GPL or the LGPL, and not to allow others to
00032  * use your version of this file under the terms of the MPL, indicate your
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00035  * the provisions above, a recipient may use your version of this file under
00036  * the terms of any one of the MPL, the GPL or the LGPL.
00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #include "nsISupports.idl"
00041 #include "nsIAtom.idl"
00042 
00043 
00044 interface nsIContent;
00045 interface nsIDocument;
00046 
00047 
00048 //
00049 // nsIChangeObserver
00050 //
00051 // Something that wants to be alerted to changes in attributes or changes in
00052 // its corresponding content object.
00053 // (NOTE: If we need more things, we can add them later)
00054 //
00055 [scriptable, uuid(d8cf3bd0-1dd1-11b2-a837-fec5f865b071)]
00056 interface nsIChangeObserver : nsISupports
00057 {
00058   void AttributeChanged ( in nsIDocument aDocument,
00059                            in long aNameSpaceID, in nsIAtom aAttribute ) ;
00060 
00061   void ContentRemoved ( in nsIDocument aDocument, in nsIContent aChild, 
00062                           in long aIndexInContainer ) ;
00063                           
00064   void ContentInserted ( in nsIDocument aDocument, in nsIContent aChild, 
00065                           in long aIndexInContainer ) ;
00066   
00067 }; // nsIChangeObserver
00068 
00069 
00070 //
00071 // nsIChangeManager
00072 //
00073 // A central manager for registering and unregistering objects that want
00074 // to be notified when content objects change or children added/removed, etc.
00075 //
00076 // We use a central manager to redirect for performance reasons, to avoid
00077 // every meny/item from getting a call when any change to the document happens.
00078 //
00079 
00080 [scriptable, uuid(fb31c7e0-1dd1-11b2-8a61-f4697ef53c88)]
00081 interface nsIChangeManager : nsISupports
00082 {
00083   void Register ( in nsIContent aContent, in nsIChangeObserver aMenuObject ) ;
00084   void Unregister ( in nsIContent aContent ) ;
00085   
00086   nsIChangeObserver Lookup ( in nsIContent aContent ) ;
00087   
00088 }; // nsPIChangeManager
00089 
00090