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lightning-sunbird  0.9+nobinonly
nsPrefService.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 Communicator client 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  *   Brian Nesse <bnesse@netscape.com>
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
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
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsPrefService_h__
00040 #define nsPrefService_h__
00041 
00042 #include "nsIPrefService.h"
00043 #include "nsIPrefBranch.h"
00044 #include "nsIPrefBranchInternal.h"
00045 #include "nsIObserver.h"
00046 #include "nsCOMPtr.h"
00047 #include "nsWeakReference.h"
00048 
00049 class nsIFile;
00050 
00051 class nsPrefService : public nsIPrefService,
00052                       public nsIObserver,
00053                       public nsIPrefBranchInternal,
00054                       public nsSupportsWeakReference
00055 {
00056   friend class nsSharedPrefHandler; 
00057   
00058 public:
00059   NS_DECL_ISUPPORTS
00060   NS_DECL_NSIPREFSERVICE
00061   NS_FORWARD_NSIPREFBRANCH(mRootBranch->)
00062   NS_FORWARD_NSIPREFBRANCH2(mRootBranch->)
00063   NS_DECL_NSIOBSERVER
00064 
00065   nsPrefService();
00066   virtual ~nsPrefService();
00067 
00068   nsresult Init();
00069                            
00070 protected:
00071   nsresult NotifyServiceObservers(const char *aSubject);
00072   nsresult UseDefaultPrefFile();
00073   nsresult UseUserPrefFile();
00074   nsresult ReadAndOwnUserPrefFile(nsIFile *aFile);
00075   nsresult ReadAndOwnSharedUserPrefFile(nsIFile *aFile);
00076   nsresult SavePrefFileInternal(nsIFile* aFile);
00077   nsresult WritePrefFile(nsIFile* aFile);
00078 
00079 private:
00080   nsCOMPtr<nsIPrefBranch2> mRootBranch;
00081   nsCOMPtr<nsIFile>       mCurrentFile;
00082   PRPackedBool            mErrorOpeningUserPrefs;
00083 
00084   PRPackedBool            mErrorOpeningSharedUserPrefs;
00085   nsCOMPtr<nsIFile>       mCurrentSharedFile;
00086 };
00087 
00088 #endif // nsPrefService_h__