image/public/imgICache.idl
author Wes Kocher <wkocher@mozilla.com>
Tue, 24 Jun 2014 18:33:46 -0700
changeset 211406 59b0072d64aa5bebe2906b1778727d8172ac0f84
parent 143576 fcfeafc7cf398ab7488855616882606f928f0514
child 244424 dde067dbfe2739942b5fa202e04dd8b055b83600
permissions -rw-r--r--
Backed out 2 changesets (bug 1027890) for B2G Windows Build bustage on a CLOSED TREE Backed out changeset bcd694f0e95d (bug 1027890) Backed out changeset 49cadfcde709 (bug 1027890)

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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 "nsISupports.idl"

interface nsIURI;
interface imgIRequest;
interface nsIProperties;

/**
 * imgICache interface
 *
 * @author Stuart Parmenter <pavlov@netscape.com>
 * @version 0.1
 * @see imagelib2
 */
[scriptable, builtinclass, uuid(b06e0fa5-d6e2-4fa3-8fc0-7775aed96522)]
interface imgICache : nsISupports
{
  /**
   * Evict images from the cache.
   *
   * @param chrome If TRUE,  evict only chrome images.
   *               If FALSE, evict everything except chrome images.
   */
  void clearCache(in boolean chrome);

  /**
   * Evict images from the cache.
   *
   * @param uri The URI to remove.
   * @throws NS_ERROR_NOT_AVAILABLE if \a uri was unable to be removed from the cache.
   */
  void removeEntry(in nsIURI uri);

  /**
   * Find Properties
   * Used to get properties such as 'type' and 'content-disposition'
   * 'type' is a nsISupportsCString containing the images' mime type such as 'image/png'
   * 'content-disposition' will be a nsISupportsCString containing the header
   * If you call this before any data has been loaded from a URI, it will succeed,
   * but come back empty.
   *
   * Hopefully this will be removed with bug 805119
   *
   * @param uri The URI to look up.
   * @returns NULL if the URL was not found in the cache
   */
  nsIProperties findEntryProperties(in nsIURI uri);

  /**
   * Make this cache instance respect private browsing notifications. This entails clearing
   * the chrome and content caches whenever the last-pb-context-exited notification is
   * observed.
   */
  void respectPrivacyNotifications();
};