gecko/netwerk/cache/public/nsIOfflineCacheSession.idl

214 lines
7.6 KiB
Plaintext

/* -*- 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 nsIOfflineCacheSession.idl.
*
* The Initial Developer of the Original Code is
* Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dave Camp <dcamp@mozilla.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"
/**
* The offline cache is meant to reliably store resources for
* offline use. The expected semantics are:
*
* a) Once populated, the cache will not evict an application resource
* unless explicitly asked.
*
* b) Resources no longer in use by the application should be evicted.
*
* c) If the cache fills up, new entries should be rejected rather
* than throwing out old ones.
*
* The offline cache uses domains to concretely represent an
* application. It maintains a list of resources to be pinned for
* each domain. This list is separate from actual cache
* population - the caller is still responsible for placing items
* in the cache, and ownership can be declared without a
* corresponding entry.
*
* A key can optionally be associated with a specific URI within
* the domain.
*/
[scriptable, uuid(de7875e5-a7e2-4d8d-ad01-807ef55ef8c0)]
interface nsIOfflineCacheSession : nsISupports
{
/**
* Gets the list of owner domains in the cache.
*
* @param count
* The number of domains returned
* @param uris
* The domains that own resources in the cache
*/
void getOwnerDomains(out unsigned long count,
[array, size_is(count)]out string domains);
/**
* Gets the list of owner URIs associated with a domain.
*
* @param ownerDomain
* The domain to query
* @param count
* The number of uris returned
* @param uris
* The uris in this domain that own resources
*/
void getOwnerURIs(in ACString ownerDomain,
out unsigned long count,
[array, size_is(count)]out string uris);
/**
* Sets the resources owned by a given domain/URI pair.
*
* Setting a list will remove any resources previously owned by this
* domain/URI pair.
*
* A key can be added while there is no associated entry. When
* an entry is created with this key, it will be owned by the
* domain/URI pair.
*
* @param ownerDomain
* The domain that owns the resources.
* @param ownerURI
* The specific URI that owns the resources. This can be empty if
* no URI specifically owns the resources.
* @param count
* The number of keys in keys.
* @param keys
* The keys that the domain/URI pair own. This can be empty to
* clear ownership for the domain/URI pair.
*/
void setOwnedKeys(in ACString ownerDomain,
in ACString ownerURI,
in unsigned long count,
[array, size_is(count)]in string keys);
/**
* Gets the list of resources owned by a given domain/URI pair.
*
* @param ownerDomain
* The domain that owns the resources.
* @param ownerURI
* The specific URI that owns the resources. This can be empty
* if no URI specifically owns the resources.
* @param count
* The number of keys in keys.
* @param keys
* The keys that the domain/URI pair own.
*/
void getOwnedKeys(in ACString ownerDomain,
in ACString ownerURI,
out unsigned long count,
[array, size_is(count)]out string keys);
/**
* Adds an owned key to a domain/URI pair.
*
* A key can be added while there is no associated entry. When
* an entry is created with this key, it will be owned by the
* domain/URI pair.
*
* @param ownerDomain
* The domain that owns the resources.
* @param ownerURI
* The specific URI that owns the resources. This can be empty
* if no URI specifically owns the resources.
* @param key
* The key to add.
*/
void addOwnedKey(in ACString ownerDomain,
in ACString ownerURI,
in ACString key);
/**
* Removes an owned key from a domain/URI pair.
*
* If the key does not exist, an NS_ERROR_NOT_AVAILABLE exception
* will be thrown.
*
* @param ownerDomain
* The domain that owns the resources.
* @param ownerURI
* The specific URI that owns the resources. This can be empty
* if no URI specifically owns the resources.
* @param key The key to remove.
*/
void removeOwnedKey(in ACString ownerDomain,
in ACString ownerURI,
in ACString key);
/**
* Checks whether a key is owned by a given domain/URI pair.
*
* @param ownerDomain
* The domain that owns the resources.
* @param ownerURI
* The specific URI that owns the resources. This can be empty
* if no URI specifically owns the resources.
* @param key The key to check
*/
boolean keyIsOwned(in ACString ownerDomain,
in ACString ownerURI,
in ACString key);
/**
* Remove all keys owned by a domain, including keys owned by
* a specific URI.
*
* @param domain The domain for which keys should be removed.
*/
void clearKeysOwnedByDomain(in ACString ownerDomain);
/**
* Evict all entries that are not owned by a domain.
*/
void evictUnownedEntries();
/**
* Merge the items from a temporary clientID in to this client. This lets
* offline cache updates accumulate in a temporary client and be moved
* in all at once.
*
* Entries in the temporary client will replace any entries in this client
* with the same cache key.
*
* Ownership lists for a given domain/URI pair from the temporary client
* will replace ownership lists for the same domain/URI pair.
*/
void mergeTemporaryClientID(in ACString temporaryClientID);
};