83 lines
3.1 KiB
Plaintext
83 lines
3.1 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 nsIUnicharInputStream;
|
|
interface nsIUnicharStreamLoader;
|
|
interface nsIChannel;
|
|
|
|
[scriptable, uuid(c2982b39-2e48-429e-92b7-99348a1633c5)]
|
|
interface nsIUnicharStreamLoaderObserver : nsISupports
|
|
{
|
|
/**
|
|
* Called as soon as at least 512 octets of data have arrived.
|
|
* If the stream receives fewer than 512 octets of data in total,
|
|
* called upon stream completion but before calling OnStreamComplete.
|
|
* Will not be called if the stream receives no data at all.
|
|
*
|
|
* @param aLoader the unichar stream loader
|
|
* @param aContext the context parameter of the underlying channel
|
|
* @param aSegment up to 512 octets of raw data from the stream
|
|
*
|
|
* @return the name of the character set to be used to decode this stream
|
|
*/
|
|
ACString onDetermineCharset(in nsIUnicharStreamLoader aLoader,
|
|
in nsISupports aContext,
|
|
in ACString aSegment);
|
|
|
|
/**
|
|
* Called when the entire stream has been loaded and decoded.
|
|
*
|
|
* @param aLoader the unichar stream loader
|
|
* @param aContext the context parameter of the underlying channel
|
|
* @param aStatus the status of the underlying channel
|
|
* @param aBuffer the contents of the stream, decoded to UTF-16.
|
|
*
|
|
* This method will always be called asynchronously by the
|
|
* nsUnicharIStreamLoader involved, on the thread that called the
|
|
* loader's init() method. If onDetermineCharset fails,
|
|
* onStreamComplete will still be called, but aStatus will be an
|
|
* error code.
|
|
*/
|
|
void onStreamComplete(in nsIUnicharStreamLoader aLoader,
|
|
in nsISupports aContext,
|
|
in nsresult aStatus,
|
|
in AString aBuffer);
|
|
};
|
|
|
|
/**
|
|
* Asynchronously load a channel, converting the data to UTF-16.
|
|
*
|
|
* To use this interface, first call init() with a
|
|
* nsIUnicharStreamLoaderObserver that will be notified when the data has been
|
|
* loaded. Then call asyncOpen() on the channel with the nsIUnicharStreamLoader
|
|
* as the listener. The context argument in the asyncOpen() call will be
|
|
* passed to the onStreamComplete() callback.
|
|
*/
|
|
[scriptable, uuid(afb62060-37c7-4713-8a84-4a0c1199ba5c)]
|
|
interface nsIUnicharStreamLoader : nsIStreamListener
|
|
{
|
|
/**
|
|
* Initializes the unichar stream loader
|
|
*
|
|
* @param aObserver the observer to notify when a charset is needed and when
|
|
* the load is complete
|
|
*/
|
|
void init(in nsIUnicharStreamLoaderObserver aObserver);
|
|
|
|
/**
|
|
* The channel attribute is only valid inside the onDetermineCharset
|
|
* and onStreamComplete callbacks. Otherwise it will be null.
|
|
*/
|
|
readonly attribute nsIChannel channel;
|
|
|
|
/**
|
|
* The charset that onDetermineCharset returned, if that's been
|
|
* called.
|
|
*/
|
|
readonly attribute ACString charset;
|
|
};
|