gecko-dev/modules/libpr0n/public/imgICache.idl

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 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
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2001
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 * Contributor(s):
 *   Stuart Parmenter <pavlov@netscape.com>
 *
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#include "nsISupports.idl"

interface nsIURI;
interface imgIRequest;
interface nsIProperties;

/**
 * imgICache interface
 *
 * @author Stuart Parmenter <pavlov@netscape.com>
 * @version 0.1
 * @see imagelib2
 */
[scriptable, uuid(f1b74aae-5661-4753-a21c-66dd644afebc)]
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.
   * @return NS_OK if \a uri was removed from the cache.
   *         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.
   *
   * @param uri The URI to look up.
   * @returns NULL if the URL was not found in the cache
   */
  nsIProperties findEntryProperties(in nsIURI uri);
};