/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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 Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

/* nsIDocumentLoaderObserver -->

*/

#include "nsISupports.idl"

interface nsIDocumentLoader;
interface nsIURI;
interface nsIChannel;

/* we'll be phasing this interface out in place of a new
   improved progress sink interface
*/

%{C++
#include "nsString.h"
%}

      native nsString(nsString);
[ref] native nsStringRef(nsString);

[scriptable, uuid(f6b4f550-317c-11d2-bd8c-00805f8ae3f4)]
interface nsIDocumentLoaderObserver : nsISupports 
{
  /**
   * Notify the observer that a new document will be loaded.  
   *
   * This notification occurs before any DNS resolution occurs, or
   * a connection is established with the server...
   */
  void onStartDocumentLoad(in nsIDocumentLoader aLoader, in nsIURI aURL, in string aCommand);

  /**
   * Notify the observer that a document has been completely loaded.
   */
  void onEndDocumentLoad(in nsIDocumentLoader loader, in nsIChannel aChannel, in unsigned long aStatus);

  /**
   * Notify the observer that the specified nsIURI has just started to load.
   *
   * This notification occurs after DNS resolution, and a connection to the
   * server has been established.
   */
  void onStartURLLoad(in nsIDocumentLoader aLoader, in nsIChannel channel);
  
  /**
   * Notify the observer that progress has occurred in the loading of the 
   * specified URL...
   */
  void onProgressURLLoad(in nsIDocumentLoader aLoader,
                         in nsIChannel aChannel, in unsigned long aProgress, 
                         in unsigned long aProgressMax);

  /**
   * Notify the observer that status text is available regarding the URL
   * being loaded...
   */
  [noscript] void onStatusURLLoad(in nsIDocumentLoader loader, in nsIChannel channel, in nsStringRef aMsg);

  /**
   * Notify the observer that the specified nsIURI has finished loading.
   */
  void onEndURLLoad(in nsIDocumentLoader aLoader, in nsIChannel aChannel, in unsigned long aStatus);
};

/* the following is a transition define. nsIDocumentLoaderObserver wasn't scriptable and now it is.
   so lots of people refer to the IID using the old non-scriptable generated IID...
*/ 

%{C++
#define NS_IDOCUMENT_LOADER_OBSERVER_IID NS_IDOCUMENTLOADEROBSERVER_IID
%}