mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 05:41:12 +00:00
101 lines
4.0 KiB
Plaintext
101 lines
4.0 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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 "nsIStreamListener.idl"
|
|
|
|
interface nsIRequest;
|
|
interface nsIIncrementalStreamLoader;
|
|
|
|
[scriptable, uuid(07c3d2cc-5454-4618-9f4f-cd93de9504a4)]
|
|
interface nsIIncrementalStreamLoaderObserver : nsISupports
|
|
{
|
|
/**
|
|
* Called when new data has arrived on the stream.
|
|
*
|
|
* @param loader the stream loader that loaded the stream.
|
|
* @param ctxt the context parameter of the underlying channel
|
|
* @param dataLength the length of the new data received
|
|
* @param data the contents of the new data received.
|
|
*
|
|
* This method will always be called asynchronously by the
|
|
* nsIIncrementalStreamLoader involved, on the thread that called the
|
|
* loader's init() method.
|
|
*
|
|
* If the observer wants to not accumulate all or portional of the data in
|
|
* the internal buffer, the consumedLength shall be set to the value of
|
|
* the dataLength or less. By default the consumedLength value is assumed 0.
|
|
* The data and dataLength reflect the non-consumed data and will be
|
|
* accumulated if consumedLength is not set.
|
|
*
|
|
* In comparison with onStreamComplete(), the data buffer cannot be
|
|
* adopted if this method returns NS_SUCCESS_ADOPTED_DATA.
|
|
*/
|
|
void onIncrementalData(in nsIIncrementalStreamLoader loader,
|
|
in nsISupports ctxt,
|
|
in unsigned long dataLength,
|
|
[const,array,size_is(dataLength)] in octet data,
|
|
inout unsigned long consumedLength);
|
|
|
|
/**
|
|
* Called when the entire stream has been loaded.
|
|
*
|
|
* @param loader the stream loader that loaded the stream.
|
|
* @param ctxt the context parameter of the underlying channel
|
|
* @param status the status of the underlying channel
|
|
* @param resultLength the length of the data loaded
|
|
* @param result the data
|
|
*
|
|
* This method will always be called asynchronously by the
|
|
* nsIIncrementalStreamLoader involved, on the thread that called the
|
|
* loader's init() method.
|
|
*
|
|
* If the observer wants to take over responsibility for the
|
|
* data buffer (result), it returns NS_SUCCESS_ADOPTED_DATA
|
|
* in place of NS_OK as its success code. The loader will then
|
|
* "forget" about the data and not free() it after
|
|
* onStreamComplete() returns; observer must call free()
|
|
* when the data is no longer required.
|
|
*/
|
|
void onStreamComplete(in nsIIncrementalStreamLoader loader,
|
|
in nsISupports ctxt,
|
|
in nsresult status,
|
|
in unsigned long resultLength,
|
|
[const,array,size_is(resultLength)] in octet result);
|
|
};
|
|
|
|
/**
|
|
* Asynchronously loads a channel into a memory buffer.
|
|
*
|
|
* To use this interface, first call init() with a nsIIncrementalStreamLoaderObserver
|
|
* that will be notified when the data has been loaded. Then call asyncOpen()
|
|
* on the channel with the nsIIncrementalStreamLoader as the listener. The context
|
|
* argument in the asyncOpen() call will be passed to the onStreamComplete()
|
|
* callback.
|
|
*
|
|
* XXX define behaviour for sizes >4 GB
|
|
*/
|
|
[scriptable, uuid(a023b060-ba23-431a-b449-2dd63e220554)]
|
|
interface nsIIncrementalStreamLoader : nsIStreamListener
|
|
{
|
|
/**
|
|
* Initialize this stream loader, and start loading the data.
|
|
*
|
|
* @param aObserver
|
|
* An observer that will be notified when the data is complete.
|
|
*/
|
|
void init(in nsIIncrementalStreamLoaderObserver aObserver);
|
|
|
|
/**
|
|
* Gets the number of bytes read so far.
|
|
*/
|
|
readonly attribute unsigned long numBytesRead;
|
|
|
|
/**
|
|
* Gets the request that loaded this file.
|
|
* null after the request has finished loading.
|
|
*/
|
|
readonly attribute nsIRequest request;
|
|
};
|