gecko-dev/xpcom/io/nsIObservableOutputStream.idl
2002-03-12 00:59:06 +00:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Darin Fisher <darin@netscape.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 ***** */
#include "nsISupports.idl"
interface nsIOutputStream;
interface nsIOutputStreamObserver;
[scriptable, uuid(15b374f8-1dd2-11b2-87ab-c3299d704fd3)]
interface nsIObservableOutputStream : nsISupports
{
/**
* Allows users to set an observer on an input stream to receive notifications
* about the consumer emptying the input stream's underlying buffer, or closing the
* stream. This is necessary for non-blocking streams so that the producer can suspend
* itself until more data can be written.
*/
attribute nsIOutputStreamObserver observer;
};
[scriptable, uuid(12314194-61b4-11d4-9877-00c04fa0cf4a)]
interface nsIOutputStreamObserver : nsISupports
{
/**
* Called when the output stream's producer has written more data into the stream.
*/
void onWrite(in nsIOutputStream outStr, in unsigned long amount);
/**
* Called when the stream's underlying buffer becomes full.
*/
void onFull(in nsIOutputStream outStr);
};