// Derived from chrome://mozapps/content/extensions/extensions.js

const nsIAppStartup = Components.interfaces.nsIAppStartup;

// Notify all windows that an application quit has been requested.
var os = Components.classes["@mozilla.org/observer-service;1"]
                   .getService(Components.interfaces.nsIObserverService);
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;

// Notify all windows that an application quit has been granted.
os.notifyObservers(null, "quit-application-granted", null);

// Enumerate all windows and call shutdown handlers
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
                   .getService(Components.interfaces.nsIWindowMediator);
var windows = wm.getEnumerator(null);
while (windows.hasMoreElements()) {
  var win = windows.getNext();
  if (("tryToClose" in win) && !win.tryToClose())
    return;
}
Components.classes["@mozilla.org/toolkit/app-startup;1"].getService(nsIAppStartup)
          .quit(nsIAppStartup.eRestart | nsIAppStartup.eAttemptQuit);