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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsIInputStream.idl"
interface nsIOutputStream;
interface nsIEventTarget;
/**
* A nsIInputStreamTee is a wrapper for an input stream, that when read
* reads the specified amount of data from its |source| and copies that
* data to its |sink|. |sink| must be a blocking output stream.
*/
[scriptable, uuid(90a9d790-3bca-421e-a73b-98f68e13c917)]
interface nsIInputStreamTee : nsIInputStream
{
attribute nsIInputStream source;
attribute nsIOutputStream sink;
/**
* If |eventTarget| is set, copying to sink is done asynchronously using
* the event-target (e.g. a thread). If |eventTarget| is not set, copying
* to sink happens synchronously while reading from the source.
*/
attribute nsIEventTarget eventTarget;
};
%{C++
// factory methods
extern nsresult
NS_NewInputStreamTee(nsIInputStream **tee, // read from this input stream
nsIInputStream *source,
nsIOutputStream *sink);
extern nsresult
NS_NewInputStreamTeeAsync(nsIInputStream **tee, // read from this input stream
nsIInputStream *source,
nsIOutputStream *sink,
nsIEventTarget *eventTarget);
%}