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119 lines
4.7 KiB
Plaintext
119 lines
4.7 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsIUnicharInputStream;
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interface nsIUnicharStreamLoader;
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interface nsIChannel;
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[scriptable, uuid(e06e8b08-8cdd-4503-a0a0-6f3b943602af)]
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interface nsIUnicharStreamLoaderObserver : nsISupports
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{
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/**
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* Called when the first full segment of data if available.
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*
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* @param aLoader the unichar stream loader
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* @param aContext the aContext parameter passed to the loader's init method
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* @param aFirstSegment the raw bytes of the first full data segment
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* @param aLength the length of aFirstSegment
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*
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* @return charset corresponding to this stream
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*/
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ACString onDetermineCharset(in nsIUnicharStreamLoader aLoader,
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in nsISupports aContext,
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[size_is(aLength)] in string aFirstSegment,
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in unsigned long aLength);
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/**
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* Called when the entire stream has been loaded.
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*
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* @param aLoader the unichar stream loader
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* @param aContext the aContext parameter passed to the loader's init method
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* @param aStatus the status of the underlying channel
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* @param aUnicharData the unichar input stream containing the data. This
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* can be null in some failure conditions.
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*
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* This method will always be called asynchronously by the
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* nsUnicharIStreamLoader involved, on the thread that called the
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* loader's init() method.
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*/
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void onStreamComplete(in nsIUnicharStreamLoader aLoader,
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in nsISupports aContext,
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in nsresult aStatus,
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in nsIUnicharInputStream aUnicharData);
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};
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[scriptable, uuid(8a3eca16-167e-443d-9485-7e84ed822e95)]
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interface nsIUnicharStreamLoader : nsISupports
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{
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const unsigned long DEFAULT_SEGMENT_SIZE = 4096;
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/**
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* Initializes the unichar stream loader
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*
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* @param aChannel the channel to read data from. This should _not_ be
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* opened; the loader will open the channel itself.
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* @param aObserver the observer to notify when a charset is needed and when
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* the load is complete
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* @param aContext an opaque context pointer
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* @param aSegmentSize the size of the segments to use for the data, in bytes
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*
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* @note Failure to open the channel will cause init() to throw. A
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* successful call to init() means that onStreamComplete is guaranteed
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* to be called on aObserver asynchronously (i.e. after init() returns).
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*/
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void init(in nsIChannel aChannel,
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in nsIUnicharStreamLoaderObserver aObserver,
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in nsISupports aContext,
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in unsigned long aSegmentSize);
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/**
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* The channel attribute is only valid inside the onDetermineCharset
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* and onStreamComplete callbacks. Otherwise it will be null.
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*/
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readonly attribute nsIChannel channel;
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/**
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* The charset that onDetermineCharset returned, if that's been
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* called.
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*/
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readonly attribute ACString charset;
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};
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