/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIController;
interface nsIControllers;
interface mozIDOMWindowProxy;

webidl Element;

[scriptable, uuid(a9fa9fd3-8d62-4f94-9ed8-3ea9c3cf0773)]
interface nsIDOMXULCommandDispatcher : nsISupports
{
  [setter_can_run_script]
  attribute Element focusedElement;
  [setter_can_run_script]
  attribute mozIDOMWindowProxy focusedWindow;

  void                      addCommandUpdater(in Element updater,
                                              in AString events,
                                              in AString targets);
  void                      removeCommandUpdater(in Element updater);

  void                      updateCommands(in AString eventName);

  nsIController             getControllerForCommand(in string command);
  nsIControllers            getControllers();

  void advanceFocus();
  void rewindFocus();
  void advanceFocusIntoSubtree(in Element elt);

  // When locked, command updating is batched until unlocked. Always ensure that
  // lock and unlock is called in a pair.
  void lock();
  void unlock();
};