/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * Brian Nesse <bnesse@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * the provisions above, a recipient may use your version of this file under
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 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsPrefService_h__
#define nsPrefService_h__

#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsIPrefBranchInternal.h"
#include "nsIObserver.h"
#include "nsCOMPtr.h"
#include "nsWeakReference.h"

class nsIFile;

class nsPrefService : public nsIPrefService,
                      public nsIObserver,
                      public nsIPrefBranchInternal,
                      public nsSupportsWeakReference
{
  friend class nsSharedPrefHandler; 
  
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIPREFSERVICE
  NS_FORWARD_NSIPREFBRANCH(mRootBranch->)
  NS_FORWARD_NSIPREFBRANCHINTERNAL(mRootBranch->)
  NS_DECL_NSIOBSERVER

  nsPrefService();
  virtual ~nsPrefService();

  nsresult Init();
                           
protected:
  nsresult NotifyServiceObservers(const char *aSubject);
  nsresult UseDefaultPrefFile();
  nsresult UseUserPrefFile();
  nsresult ReadAndOwnUserPrefFile(nsIFile *aFile);
  nsresult ReadAndOwnSharedUserPrefFile(nsIFile *aFile);
  nsresult SavePrefFileInternal(nsIFile* aFile);
  nsresult WritePrefFile(nsIFile* aFile);

private:
  nsCOMPtr<nsIPrefBranchInternal> mRootBranch;
  nsCOMPtr<nsIFile>       mCurrentFile;
  PRPackedBool            mErrorOpeningUserPrefs;

  PRPackedBool            mErrorOpeningSharedUserPrefs;
  nsCOMPtr<nsIFile>       mCurrentSharedFile;
};

#endif // nsPrefService_h__
