gecko-dev/netwerk/cache/nsICacheService.idl
2010-07-29 20:16:37 -07:00

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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** 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 nsICacheService.idl, released
* February 10, 2001.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Gordon Sheridan <gordon@netscape.com>
* Patrick Beard <beard@netscape.com>
* Darin Fisher <darin@netscape.com>
*
* 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"
#include "nsICache.idl"
interface nsISimpleEnumerator;
interface nsICacheListener;
interface nsICacheSession;
interface nsICacheVisitor;
[scriptable, uuid(de114eb4-29fc-4959-b2f7-2d03eb9bc771)]
interface nsICacheService : nsISupports
{
/**
* Create a cache session
*
* A cache session represents a client's access into the cache. The cache
* session is not "owned" by the cache service. Hence, it is possible to
* create duplicate cache sessions. Entries created by a cache session
* are invisible to other cache sessions, unless the cache sessions are
* equivalent.
*
* @param clientID - Specifies the name of the client using the cache.
* @param storagePolicy - Limits the storage policy for all entries
* accessed via the returned session. As a result, devices excluded
* by the storage policy will not be searched when opening entries
* from the returned session.
* @param streamBased - Indicates whether or not the data being cached
* can be represented as a stream. The storagePolicy must be
* consistent with the value of this field. For example, a non-stream-
* based cache entry can only have a storage policy of STORE_IN_MEMORY.
* @return new cache session.
*/
nsICacheSession createSession(in string clientID,
in nsCacheStoragePolicy storagePolicy,
in boolean streamBased);
/**
* Visit entries stored in the cache. Used to implement about:cache.
*/
void visitEntries(in nsICacheVisitor visitor);
/**
* Evicts all entries in all devices implied by the storage policy.
*
* @note This function may evict some items but will throw if it fails to evict
* everything.
*/
void evictEntries(in nsCacheStoragePolicy storagePolicy);
};
%{C++
/**
* Observer service notification that is sent when
* nsICacheService::evictEntries() or nsICacheSession::evictEntries()
* is called.
*/
#define NS_CACHESERVICE_EMPTYCACHE_TOPIC_ID "cacheservice:empty-cache"
%}