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lightning-sunbird  0.9+nobinonly
nsAccessibilityService.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   John Gaunt (jgaunt@netscape.com)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or 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
00029  * of those above. If you wish to allow use of your version of this file only
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00034  * the provisions above, a recipient may use your version of this file under
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef __nsAccessibilityService_h__
00040 #define __nsAccessibilityService_h__
00041 
00042 #include "nsIAccessibilityService.h"
00043 #include "nsIObserver.h"
00044 #include "nsIWebProgressListener.h"
00045 #include "nsWeakReference.h"
00046 
00047 class nsIFrame;
00048 class nsIWeakReference;
00049 class nsIDOMNode;
00050 class nsObjectFrame;
00051 class nsIDocShell;
00052 class nsIPresShell;
00053 class nsIContent;
00054 
00055 class nsAccessibilityService : public nsIAccessibilityService, 
00056                                public nsIObserver,
00057                                public nsIWebProgressListener,
00058                                public nsSupportsWeakReference
00059 {
00060 public:
00061   nsAccessibilityService();
00062   virtual ~nsAccessibilityService();
00063 
00064   NS_DECL_ISUPPORTS
00065   NS_DECL_NSIACCESSIBLERETRIEVAL
00066   NS_DECL_NSIACCESSIBILITYSERVICE
00067   NS_DECL_NSIOBSERVER
00068   NS_DECL_NSIWEBPROGRESSLISTENER
00069 
00070   static nsresult GetShellFromNode(nsIDOMNode *aNode, nsIWeakReference **weakShell);
00071   static nsresult GetAccessibilityService(nsIAccessibilityService** aResult);
00072 
00073 private:
00074   nsresult GetInfo(nsISupports* aFrame, nsIFrame** aRealFrame, nsIWeakReference** aShell, nsIDOMNode** aContent);
00075   void GetOwnerFor(nsIPresShell *aPresShell, nsIPresShell **aOwnerShell, nsIContent **aOwnerContent);
00076   nsIContent* FindContentForDocShell(nsIPresShell* aPresShell, nsIContent* aContent, nsIDocShell*  aDocShell);
00077   static nsAccessibilityService *gAccessibilityService;
00078   nsresult InitAccessible(nsIAccessible *aAccessibleIn, nsIAccessible **aAccessibleOut);
00079 };
00080 
00081 #endif /* __nsIAccessibilityService_h__ */