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/* -*- Mode: C++; 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
 * France Telecom Research and Development.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *     Joshua Randall <jcrandall@alum.mit.edu> (original author)
 *     Wellington Fernando de Macedo <wfernandom2004@gmail.com>
 *
 * 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 ***** */

/**
 * The nsIEventSource interface is the interface for server-sent
 * DOM events as described in
 * http://dev.w3.org/html5/eventsource/#eventsource
 *
 */

#include "nsISupports.idl"

interface nsIDOMEventListener;
interface nsIPrincipal;
interface nsIScriptContext;
interface nsPIDOMWindow;

[scriptable, uuid(a3d3181e-47c1-4f2e-b2c7-94775a86f5c5)]
interface nsIEventSource : nsISupports
{
  readonly attribute DOMString url;

  // ready state
  const unsigned short CONNECTING = 0;
  const unsigned short OPEN = 1;
  const unsigned short CLOSED = 2;
  readonly attribute long readyState;

  // if true then cross-site Access-Control requests are made using credentials
  // such as cookies and authorization headers. Never affects same-site
  // requests.
  readonly attribute boolean withCredentials;

  // event handler attributes
  attribute nsIDOMEventListener onopen;
  attribute nsIDOMEventListener onmessage;
  attribute nsIDOMEventListener onerror;

  /**
   * Close the connection, if any, and set the readyState attribute to CLOSED.
   * If the connection is already closed, the method does nothing.
   */
  void close();

  /**
   * Initialize the object for use from C++ code with the principal, script
   * context, and owner window that should be used.
   *
   * @param principal The principal to use for the request. This must not be
   *                  null.
   * @param scriptContext The script context to use for the request. May be
   *                      null.
   * @param ownerWindow The associated window for the request. May be null.
   * @param url The EventSource's url. This must not be empty.
   * @param withCredentials When set to true attempts to make cross-site
   *                        Access-Control requests with credentials such as
   *                        cookies and authorization headers. Never affects
   *                        same-site requests.
   */
  [noscript] void init(in nsIPrincipal principal,
                       in nsIScriptContext scriptContext,
                       in nsPIDOMWindow ownerWindow,
                       in DOMString url,
                       in boolean withCredentials);
};