/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** 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 Indexed Database.
 *
 * The Initial Developer of the Original Code is
 * The Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Ben Turner <bent.mozilla@gmail.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"

interface nsIURI;

[scriptable, function, uuid(17675af5-0569-4f5b-987f-ff4bb60f73ee)]
interface nsIIndexedDatabaseUsageCallback : nsISupports
{
  /**
   *
   */
  void onUsageResult(in nsIURI aURI,
                     in unsigned long long aUsage);
};

[scriptable, uuid(415f5684-6c84-4a8b-b777-d01f5df778f2)]
interface nsIIndexedDatabaseManager : nsISupports
{
  /**
   * Schedules an asynchronous callback that will return the total amount of
   * disk space being used by databases for the given origin.
   *
   * @param aURI
   *        The URI whose usage is being queried.
   * @param aCallback
   *        The callback that will be called when the usage is available.
   */
  void getUsageForURI(in nsIURI aURI,
                      in nsIIndexedDatabaseUsageCallback aCallback);

  /**
   * Cancels an asynchronous usage check initiated by a previous call to
   * getUsageForURI().
   *
   * @param aURI
   *        The URI whose usage is being queried.
   * @param aCallback
   *        The callback that will be called when the usage is available.
   */
  void cancelGetUsageForURI(in nsIURI aURI,
                            in nsIIndexedDatabaseUsageCallback aCallback);


  /**
   * Removes all databases stored for the given URI. The files may not be
   * deleted immediately depending on prohibitive concurrent operations.
   *
   * @param aURI
   *        The URI whose databases are to be cleared.
   */
  void clearDatabasesForURI(in nsIURI aURI);
};
