diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /netwerk/base/nsICachingChannel.idl | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'netwerk/base/nsICachingChannel.idl')
-rw-r--r-- | netwerk/base/nsICachingChannel.idl | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/netwerk/base/nsICachingChannel.idl b/netwerk/base/nsICachingChannel.idl new file mode 100644 index 0000000000..3623423ff7 --- /dev/null +++ b/netwerk/base/nsICachingChannel.idl @@ -0,0 +1,110 @@ +/* -*- Mode: C++; 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 "nsICacheInfoChannel.idl" + +interface nsIFile; + +/** + * A channel may optionally implement this interface to allow clients + * to affect its behavior with respect to how it uses the cache service. + * + * This interface provides: + * 1) Support for "stream as file" semantics (for JAR and plugins). + * 2) Support for "pinning" cached data in the cache (for printing and save-as). + * 3) Support for uniquely identifying cached data in cases when the URL + * is insufficient (e.g., HTTP form submission). + */ +[scriptable, builtinclass, uuid(dd1d6122-5ecf-4fe4-8f0f-995e7ab3121a)] +interface nsICachingChannel : nsICacheInfoChannel +{ + /** + * Set/get the cache token... uniquely identifies the data in the cache. + * Holding a reference to this token prevents the cached data from being + * removed. + * + * A cache token retrieved from a particular instance of nsICachingChannel + * could be set on another instance of nsICachingChannel provided the + * underlying implementations are compatible. The implementation of + * nsICachingChannel would be expected to only read from the cache entry + * identified by the cache token and not try to validate it. + * + * The cache token can be QI'd to a nsICacheEntryInfo if more detail + * about the cache entry is needed (e.g., expiration time). + */ + attribute nsISupports cacheToken; + + /** + * Instructs the channel to only store the metadata of the entry, and not + * the content. When reading an existing entry, this automatically sets + * LOAD_ONLY_IF_MODIFIED flag. + * Must be called before asyncOpen(). + */ + attribute boolean cacheOnlyMetadata; + + /** + * Tells the channel to use the pinning storage. + */ + attribute boolean pin; + + /** + * Overrides cache validation for a time specified in seconds. + * + * @param aSecondsToTheFuture + * + */ + void forceCacheEntryValidFor(in unsigned long aSecondsToTheFuture); + + /************************************************************************** + * Caching channel specific load flags: + */ + + /** + * This load flag inhibits fetching from the net. An error of + * NS_ERROR_DOCUMENT_NOT_CACHED will be sent to the listener's + * onStopRequest if network IO is necessary to complete the request. + * + * This flag can be used to find out whether fetching this URL would + * cause validation of the cache entry via the network. + * + * Combining this flag with LOAD_BYPASS_LOCAL_CACHE will cause all + * loads to fail. + */ + const unsigned long LOAD_NO_NETWORK_IO = 1 << 26; + + /** + * This load flag causes the local cache to be skipped when fetching a + * request. Unlike LOAD_BYPASS_CACHE, it does not force an end-to-end load + * (i.e., it does not affect proxy caches). + */ + const unsigned long LOAD_BYPASS_LOCAL_CACHE = 1 << 28; + + /** + * This load flag causes the local cache to be skipped if the request + * would otherwise block waiting to access the cache. + */ + const unsigned long LOAD_BYPASS_LOCAL_CACHE_IF_BUSY = 1 << 29; + + /** + * This load flag inhibits fetching from the net if the data in the cache + * has been evicted. An error of NS_ERROR_DOCUMENT_NOT_CACHED will be sent + * to the listener's onStopRequest in this case. This flag is set + * automatically when the application is offline. + */ + const unsigned long LOAD_ONLY_FROM_CACHE = 1 << 30; + + /** + * This load flag controls what happens when a document would be loaded + * from the cache to satisfy a call to AsyncOpen. If this attribute is + * set to TRUE, then the document will not be loaded from the cache. A + * stream listener can check nsICachingChannel::isFromCache to determine + * if the AsyncOpen will actually result in data being streamed. + * + * If this flag has been set, and the request can be satisfied via the + * cache, then the OnDataAvailable events will be skipped. The listener + * will only see OnStartRequest followed by OnStopRequest. + */ + const unsigned long LOAD_ONLY_IF_MODIFIED = 1 << 31; +}; |