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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* vim:set ts=4 sw=4 sts=4 cin: */
- /* ***** 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.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications.
- * Portions created by the Initial Developer are Copyright (C) 2001
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Gagan Saksena <gagan@netscape.com> (original author)
- * Darin Fisher <darin@netscape.com>
- * Christian Biesinger <cbiesinger@web.de>
- *
- * 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 nsIChannel;
-
- /**
- * Implement this interface to receive control over various channel events.
- * Channels will try to get this interface from a channel's
- * notificationCallbacks or, if not available there, from the loadGroup's
- * notificationCallbacks.
- *
- * These methods are called before onStartRequest, and should be handled
- * SYNCHRONOUSLY.
- */
- [scriptable, uuid(6757d790-2916-498e-aaca-6b668a956875)]
- interface nsIChannelEventSink : nsISupports
- {
- /**
- * This is a temporary redirect. New requests for this resource should
- * continue to use the URI of the old channel.
- *
- * The new URI may be identical to the old one.
- */
- const unsigned long REDIRECT_TEMPORARY = 1 << 0;
-
- /**
- * This is a permanent redirect. New requests for this resource should use
- * the URI of the new channel (This might be an HTTP 301 reponse).
- * If this flag is not set, this is a temporary redirect.
- *
- * The new URI may be identical to the old one.
- */
- const unsigned long REDIRECT_PERMANENT = 1 << 1;
-
- /**
- * This is an internal redirect, i.e. it was not initiated by the remote
- * server, but is specific to the channel implementation.
- *
- * The new URI may be identical to the old one.
- */
- const unsigned long REDIRECT_INTERNAL = 1 << 2;
-
- /**
- * Called when a redirect occurs. This may happen due to an HTTP 3xx status
- * code.
- *
- * @param oldChannel
- * The channel that's being redirected.
- * @param newChannel
- * The new channel. This channel is not opened yet.
- * @param flags
- * Flags indicating the type of redirect. A bitmask consisting
- * of flags from above.
- * One of REDIRECT_TEMPORARY and REDIRECT_PERMANENT will always be
- * set.
- *
- * @throw <any> Throwing an exception will cancel the load. No network
- * request for the new channel will be made.
- */
- void onChannelRedirect(in nsIChannel oldChannel,
- in nsIChannel newChannel,
- in unsigned long flags);
- };
-