/* -*- 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
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 *
 * 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):
 *
 * 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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 * ***** END LICENSE BLOCK ***** */
#ifndef __nsAppShellService_h
#define __nsAppShellService_h

#include "nsIAppShellService.h"
#include "nsINativeAppSupport.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"
#include "nsIAppShell.h"
#include "plevent.h"

//Interfaces Needed
#include "nsIXULWindow.h"
#include "nsIWindowMediator.h"
#include "nsPIWindowWatcher.h"
#include "nsISplashScreen.h"

class nsAppShellService : public nsIAppShellService,
                          public nsIObserver,
                          public nsSupportsWeakReference
{
public:
  nsAppShellService(void);

  NS_DECL_ISUPPORTS
  NS_DECL_NSIAPPSHELLSERVICE
  NS_DECL_NSIOBSERVER

protected:
  virtual ~nsAppShellService();

  void RegisterObserver(PRBool aRegister);
  NS_IMETHOD JustCreateTopWindow(nsIXULWindow *aParent,
                                 nsIURI *aUrl, 
                                 PRBool aShowWindow, PRBool aLoadDefaultPage,
                                 PRUint32 aChromeMask,
                                 PRInt32 aInitialWidth, PRInt32 aInitialHeight,
                                 PRBool aIsHiddenWindow, nsIXULWindow **aResult);
  nsresult SetXPConnectSafeContext();
  nsresult ClearXPConnectSafeContext();

  nsCOMPtr<nsIAppShell> mAppShell;
  nsCOMPtr<nsICmdLineService> mCmdLineService;
  nsCOMPtr<nsIWindowMediator> mWindowMediator;
  nsCOMPtr<nsPIWindowWatcher> mWindowWatcher;
  nsCOMPtr<nsIXULWindow>      mHiddenWindow;
  PRBool mDeleteCalled;
  nsCOMPtr<nsISplashScreen> mSplashScreen;
  nsCOMPtr<nsINativeAppSupport> mNativeAppSupport;

  // Set when the appshell service is going away.
  PRBool mShuttingDown;
  PRBool mQuitOnLastWindowClosing;

  // A "last event" that is used to flush the appshell's event queue.
  struct ExitEvent {
    PLEvent            mEvent;
    nsAppShellService* mService;
  };

  static void* PR_CALLBACK HandleExitEvent(PLEvent* aEvent);
  static void PR_CALLBACK DestroyExitEvent(PLEvent* aEvent);
};

#endif