gecko-dev/layout/tools/pageloader/quit.js

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 The Original Code is Mozilla Automated Testing Code
 *
 * The Initial Developer of the Original Code is
 * Mozilla Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s): Bob Clary <bob@bclary.com>
 *
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 * 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 ***** */

/*
  From mozilla/toolkit/content
  These files did not have a license
*/

function canQuitApplication()
{
  var os = Components.classes["@mozilla.org/observer-service;1"]
    .getService(Components.interfaces.nsIObserverService);
  if (!os) 
  {
    return true;
  }
  
  try 
  {
    var cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"]
      .createInstance(Components.interfaces.nsISupportsPRBool);
    os.notifyObservers(cancelQuit, "quit-application-requested", null);
    
    // Something aborted the quit process. 
    if (cancelQuit.data)
    {
      return false;
    }
  }
  catch (ex) 
  {
  }
  return true;
}

function goQuitApplication()
{
  if (!canQuitApplication())
  {
    return false;
  }

  const kAppStartup = '@mozilla.org/toolkit/app-startup;1';
  const kAppShell   = '@mozilla.org/appshell/appShellService;1';
  var   appService;
  var   forceQuit;

  if (kAppStartup in Components.classes)
  {
    appService = Components.classes[kAppStartup].
      getService(Components.interfaces.nsIAppStartup);
    forceQuit  = Components.interfaces.nsIAppStartup.eForceQuit;
  }
  else if (kAppShell in Components.classes)
  {
    appService = Components.classes[kAppShell].
      getService(Components.interfaces.nsIAppShellService);
    forceQuit = Components.interfaces.nsIAppShellService.eForceQuit;
  }
  else
  {
    throw 'goQuitApplication: no AppStartup/appShell';
  }

  try
  {
    appService.quit(forceQuit);
  }
  catch(ex)
  {
    throw('goQuitApplication: ' + ex);
  }

  return true;
}