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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * 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 "nsIApplicationCacheContainer.idl"

/**
 * Interface implemented by channels that support application caches.
 */
[scriptable, uuid(6FA816B1-6D5F-4380-9704-054D0908CFA3)]
interface nsIApplicationCacheChannel : nsIApplicationCacheContainer
{
    /**
     * TRUE when the resource came from the application cache. This
     * might be false even there is assigned an application cache
     * e.g. in case of fallback of load of an entry matching bypass
     * namespace.
     */
    readonly attribute boolean loadedFromApplicationCache;

    /**
     * When true, the channel will ask its notification callbacks for
     * an application cache if one is not explicitly provided.  Default
     * value is true.
     *
     * NS_ERROR_ALREADY_OPENED will be thrown if set after AsyncOpen()
     * is called.
     */
    attribute boolean inheritApplicationCache;

    /**
     * When true, the channel will choose an application cache if one
     * was not explicitly provided and none is available from the
     * notification callbacks.  Default value is false.
     *
     * This attribute will not be transferred through a redirect.
     *
     * NS_ERROR_ALREADY_OPENED will be thrown if set after AsyncOpen()
     * is called.
     */
    attribute boolean chooseApplicationCache;

    /**
     * A shortcut method to mark the cache item of this channel as 'foreign'.
     * See the 'cache selection algorithm' and CACHE_SELECTION_RELOAD
     * action handling in nsContentSink.
     */
    void markOfflineCacheEntryAsForeign();

    /**
     * Set offline application cache object to instruct the channel
     * to cache for offline use using this application cache.
     */
    attribute nsIApplicationCache applicationCacheForWrite;
};