/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Mozilla Corporation
 * Portions created by the Initial Developer are Copyright (C) 2010
 * 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

interface nsIDOMWindow;
interface nsIDocShell;
interface nsIContent;

[scriptable, function, uuid(938fcb95-3d63-46be-aa72-94d08fd3b418)]
interface nsIFrameMessageListener : nsISupports
{
  /**
   * This is for JS only.
   * receiveMessage is called with one parameter, which has the following
   * properties:
   *   {
   *     name:    %message name%,
   *     sync:    %true or false%.
   *     json:    %json object or null%,
   *     objects: %array of handles or null, always null if sync is false%
   *   }
   * @note objects property isn't implemented yet.
   *
   * if the message is synchronous, possible return value is sent back
   * as JSON.
   *
   * When the listener is called, 'this' value is the target of the message.
   */
  void receiveMessage();
};

[scriptable, uuid(6b736edb-863d-40bd-bca2-62f44da803c0)]
interface nsIFrameMessageManager : nsISupports
{
  void addMessageListener(in AString aMessage, in nsIFrameMessageListener aListener);
  void removeMessageListener(in AString aMessage, in nsIFrameMessageListener aListener);
  void sendAsyncMessage(/*in messageName, in JSON*/);
};

[scriptable, uuid(c56e85b8-6736-4ae2-ae90-66bcef952a82)]
interface nsIContentFrameMessageManager : nsIFrameMessageManager
{
  /**
   * @note sending JS objects isn't implemented yet.
   *
   * Returns an array of JSON objects.
   */
  void sendSyncMessage(/*in messageName, in JSON, in an array of JS objects,*/);

  /**
   * The current top level window in the frame or null.
   */
  readonly attribute nsIDOMWindow content;

  /**
   * The top level docshell or null.
   */
  readonly attribute nsIDocShell docShell;

  /**
   * Print a string to stdout.
   */
  void dump(in DOMString aStr);
};

[uuid(9c48d557-92fe-4edb-95fc-bfe97e77bdc3)]
interface nsIInProcessContentFrameMessageManager : nsIContentFrameMessageManager
{
  [notxpcom] nsIContent getOwnerContent();
};

[scriptable, uuid(ed6522fd-ffb6-4920-b50d-cf629309616b)]
interface nsIChromeFrameMessageManager : nsIFrameMessageManager
{
  /*
   * Load a script in the (remote) frame. aURL must be the absolute URL.
   * data: URLs are also supported. For example data:,dump("foo\n");
   * If aAllowDelayedLoad is true, script will be loaded when the
   * remote frame becomes available. Otherwise the script will be loaded
   * only if the frame is already available.
   */
  void loadFrameScript(in AString aURL, in boolean aAllowDelayedLoad);
};

