/* -*- 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 nsILocalHandlerApp;
interface nsIMutableArray;

/**
 * Implements Win7 Taskbar jump list item interfaces.
 *
 * Note to consumers: it's reasonable to expect we'll need support for other types
 * of jump list items (an audio file, an email message, etc.). To add types,
 * create the specific interface here, add an implementation class to WinJumpListItem,
 * and add support to addListBuild & removed items processing.
 * 
 */

[scriptable, uuid(ACB8FB3C-E1B0-4044-8A50-E52C3E7C1057)]
interface nsIJumpListItem : nsISupports
{
  const short JUMPLIST_ITEM_EMPTY      = 0; // Empty list item
  const short JUMPLIST_ITEM_SEPARATOR  = 1; // Separator
  const short JUMPLIST_ITEM_LINK       = 2; // Web link item
  const short JUMPLIST_ITEM_SHORTCUT   = 3; // Application shortcut

  /**
   * Retrieves the jump list item type.
   */
  readonly attribute short type;

  /**
   * Compare this item to another.
   *
   * Compares the type and other properties specific to this item's
   * type.
   *
   * separator: type
   * link: type, uri, title
   * shortcut: type, handler app
   */
  boolean equals(in nsIJumpListItem item);
};

/**
 * A menu separator.
 */

[scriptable, uuid(69A2D5C5-14DC-47da-925D-869E0BD64D27)]
interface nsIJumpListSeparator : nsIJumpListItem
{
  /* nothing needed here */
};

/**
 * A URI link jump list item.
 *
 * Note the application must be the registered protocol
 * handler for the protocol of the link.
 */

[scriptable, uuid(76EA47B1-C797-49b3-9F18-5E740A688524)]
interface nsIJumpListLink : nsIJumpListItem
{
  /**
   * Set or get the uri for this link item.
   */
  attribute nsIURI uri;

  /**
   * Set or get the title for a link item.  
   */
  attribute AString uriTitle;

  /**
   * Get a 'privacy safe' unique string hash of the uri's
   * spec. Useful in tracking removed items using visible
   * data stores such as prefs. Generates an MD5 hash of
   * the URI spec using nsICryptoHash.
   */
  readonly attribute ACString uriHash;

  /**
   * Compare this item's hash to another uri.
   *
   * Generates a spec hash of the incoming uri and compares
   * it to this item's uri spec hash.
   */
  boolean compareHash(in nsIURI uri);
};

/**
 * A generic application shortcut with command line support.
 */

[scriptable, uuid(CBE3A37C-BCE1-4fec-80A5-5FFBC7F33EEA)]
interface nsIJumpListShortcut : nsIJumpListItem
{
  /**
   * Set or get the handler app for this shortcut item.
   *
   * The handler app may also be used along with iconIndex to generate an icon
   * for the jump list item.
   * 
   * @throw NS_ERROR_FILE_NOT_FOUND if the handler app can
   * not be found on  the system.
   *
   * @see faviconPageUri
   */
  attribute nsILocalHandlerApp app;

  /**
   * Set or get the icon displayed with the jump list item.
   *
   * Indicates the resource index of the icon contained within the handler
   * executable which may be used as the jump list icon.
   *
   * @see faviconPageUri
   */
  attribute long iconIndex;

  /**
   * Set or get the URI of a page whose favicon may be used as the icon.
   *
   * When a jump list build occurs, the favicon to be used for the item is
   * obtained using the following steps:
   * - First, attempt to use the asynchronously retrieved and scaled favicon
   * associated with the faviconPageUri.
   * - If faviconPageUri is null, or if retrieving the favicon fails, fall
   * back to using the handler executable and iconIndex.  
   */
  attribute nsIURI faviconPageUri;
};

