Back to index

lightning-sunbird  0.9+nobinonly
nsAsyncStreamListener.h
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsAsyncStreamListener_h__
00039 #define nsAsyncStreamListener_h__
00040 
00041 #include "nsIStreamListenerProxy.h"
00042 #include "nsCOMPtr.h"
00043 #include "nsIEventQueue.h"
00044 #include "nsIRequestObserver.h"
00045 #include "nsIStreamListener.h"
00046 #include "nsIRequest.h"
00047 
00049 
00050 class nsAsyncStreamObserver : public nsIRequestObserver
00051 {
00052 public:
00053     NS_DECL_ISUPPORTS
00054     NS_DECL_NSIREQUESTOBSERVER
00055 
00056     // nsAsyncStreamObserver methods:
00057     nsAsyncStreamObserver() 
00058     { 
00059     }
00060     
00061     virtual ~nsAsyncStreamObserver() {}
00062 
00063     static NS_METHOD
00064     Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
00065 
00066     NS_METHOD Init(nsIRequestObserver *, nsIEventQueue *);
00067 
00068     nsISupports* GetReceiver()      { return mReceiver.get(); }
00069     void Clear()      { mReceiver = nsnull; }
00070 
00071 protected:
00072     nsCOMPtr<nsIEventQueue>      mEventQueue;
00073     nsCOMPtr<nsIRequestObserver> mReceiver;
00074 };
00075 
00077 
00078 class nsAsyncStreamListener : public nsAsyncStreamObserver,
00079                               public nsIAsyncStreamListener
00080 {
00081 public:
00082     NS_DECL_ISUPPORTS_INHERITED
00083 
00084     // nsIStreamListener methods:
00085     NS_IMETHOD OnStartRequest(nsIRequest* request,
00086                               nsISupports* context) 
00087     { 
00088         return nsAsyncStreamObserver::OnStartRequest(request, context); 
00089     }
00090 
00091     NS_IMETHOD OnStopRequest(nsIRequest* request,
00092                              nsISupports* context, 
00093                              nsresult aStatus)
00094     { 
00095         return nsAsyncStreamObserver::OnStopRequest(request, context, aStatus);
00096     }
00097 
00098     NS_IMETHOD OnDataAvailable(nsIRequest* request, nsISupports* context,
00099                                nsIInputStream *aIStream, 
00100                                PRUint32 aSourceOffset,
00101                                PRUint32 aLength);
00102 
00103     // nsIAsyncStreamListener methods:
00104     NS_IMETHOD Init(nsIStreamListener* aListener, nsIEventQueue* aEventQ) {
00105         return nsAsyncStreamObserver::Init(aListener, aEventQ);
00106     }
00107 
00108     // nsAsyncStreamListener methods:
00109     nsAsyncStreamListener() {
00110         MOZ_COUNT_CTOR(nsAsyncStreamListener);
00111     }
00112 
00113     virtual ~nsAsyncStreamListener() {
00114         MOZ_COUNT_DTOR(nsAsyncStreamListener);
00115     }
00116 
00117     static NS_METHOD
00118     Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
00119 
00120 };
00121 
00123 
00124 #endif // nsAsyncStreamListener_h__