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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** 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.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2002
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Darin Fisher <darin@netscape.com> (original author)
- *
- * 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 nsIUnicharInputStream;
- interface nsIUnicharStreamLoader;
- interface nsIChannel;
-
- [scriptable, uuid(e06e8b08-8cdd-4503-a0a0-6f3b943602af)]
- interface nsIUnicharStreamLoaderObserver : nsISupports
- {
- /**
- * Called when the first full segment of data if available.
- *
- * @param aLoader the unichar stream loader
- * @param aContext the aContext parameter passed to the loader's init method
- * @param aFirstSegment the raw bytes of the first full data segment
- * @param aLength the length of aFirstSegment
- *
- * @return charset corresponding to this stream
- */
- ACString onDetermineCharset(in nsIUnicharStreamLoader aLoader,
- in nsISupports aContext,
- [size_is(aLength)] in string aFirstSegment,
- in unsigned long aLength);
-
- /**
- * Called when the entire stream has been loaded.
- *
- * @param aLoader the unichar stream loader
- * @param aContext the aContext parameter passed to the loader's init method
- * @param aStatus the status of the underlying channel
- * @param aUnicharData the unichar input stream containing the data. This
- * can be null in some failure conditions.
- */
- void onStreamComplete(in nsIUnicharStreamLoader aLoader,
- in nsISupports aContext,
- in nsresult aStatus,
- in nsIUnicharInputStream aUnicharData);
- };
-
- [scriptable, uuid(8a3eca16-167e-443d-9485-7e84ed822e95)]
- interface nsIUnicharStreamLoader : nsISupports
- {
- const unsigned long DEFAULT_SEGMENT_SIZE = 4096;
-
- /**
- * Initializes the unichar stream loader
- *
- * @param aChannel the channel to read data from. This should _not_ be
- * opened; the loader will open the channel itself.
- * @param aObserver the observer to notify when a charset is needed and when
- * the load is complete
- * @param aContext an opaque context pointer
- * @param aSegmentSize the size of the segments to use for the data, in bytes
- */
-
- void init(in nsIChannel aChannel,
- in nsIUnicharStreamLoaderObserver aObserver,
- in nsISupports aContext,
- in unsigned long aSegmentSize);
-
- /**
- * 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;
- };
-