gecko-dev/netwerk/base/public/nsIStreamObserver.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 the Initial Developer are Copyright (C) 1998
* 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
interface nsIRequest;
interface nsIEventQueue;
/**
* nsIStreamObserver
*
* @status UNDER_REVIEW
*/
[scriptable, uuid(fd91e2e0-1481-11d3-9333-00104ba0fd40)]
interface nsIStreamObserver : nsISupports
{
/**
* Called to signify the beginning of an asynchronous request.
*
* @param request - request being observed
* @param ctxt - user specified data passed to AsyncRead/Write
*/
void onStartRequest(in nsIRequest request,
in nsISupports ctxt);
/**
* Called to signify the end of an asynchronous request. This
* call is always preceded by a call to onStartRequest.
*
* @param request - request being observed
* @param ctxt - user specified data passed to AsyncRead/Write
* @param statusCode - reason for stopping (NS_OK if completed successfully)
* @param statusText - human readable reason for stopping (can be NULL)
*/
void onStopRequest(in nsIRequest request,
in nsISupports ctxt,
in nsresult statusCode,
in wstring statusText);
};
/**
* A stream observer proxy is used to ship data over to another thread specified
* by the thread's event queue. The "true" stream observer's methods are
* invoked on the other thread.
*
* This interface only provides the initialization needed after construction. Otherwise,
* these objects are used simply as nsIStreamObserver's.
*/
[scriptable, uuid(3c9b532e-db84-4ecf-aa6a-4d38a9c4c5f0)]
interface nsIStreamObserverProxy : nsIStreamObserver
{
/**
* Initializes an nsIStreamObserverProxy.
*
* @param observer - receives observer notifications on the other thread
* @param eventQ - may be NULL indicating the calling thread's event queue
*/
void init(in nsIStreamObserver observer,
in nsIEventQueue eventQ);
};
/**
* An asynchronous stream observer is used to ship data over to another thread specified
* by the thread's event queue. The receiver stream observer is then used to receive
* the notifications on the other thread.
*
* This interface only provides the initialization needed after construction. Otherwise,
* these objects are used simply as nsIStreamObservers.
*/
[scriptable, uuid(a28dc590-91b3-11d3-8cd9-0060b0fc14a3)]
interface nsIAsyncStreamObserver : nsIStreamObserver
{
/**
* Initializes an nsIAsyncStreamObserver.
* @param eventQueue - may be null indicating the calling thread's event queue
*/
void init(in nsIStreamObserver receiver,
in nsIEventQueue eventQueue);
};
%{C++
// Generic status codes for OnStopRequest:
#define NS_BINDING_SUCCEEDED NS_OK
#define NS_BINDING_FAILED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 1)
#define NS_BINDING_ABORTED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 2)
%}