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/* vim: se cin sw=2 ts=2 et : */
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Rob Arnold <tellrob@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 "nsITaskbarPreview.idl"
interface imgIContainer;

/*
 * nsITaskbarTabPreview
 *
 * This interface controls tab preview-specific behavior. Creating an
 * nsITaskbarTabPreview for a window will hide that window's
 * nsITaskbarWindowPreview in the taskbar - the native API performs this
 * unconditionally. When there are no more tab previews for a window, the
 * nsITaskbarWindowPreview will automatically become visible again.
 *
 * An application may have as many tab previews per window as memory allows.
 *
 */
[scriptable, uuid(11E4C8BD-5C2D-4E1A-A9A1-79DD5B0FE544)]
interface nsITaskbarTabPreview : nsITaskbarPreview
{
  /**
   * The title displayed above the thumbnail
   *
   * Default: an empty string
   */
  attribute DOMString title;

  /**
   * The icon displayed next to the title in the preview
   *
   * Default: null
   */
  attribute imgIContainer icon;

  /**
   * Rearranges the preview relative to another tab preview from the same window
   * @param aNext The preview to the right of this one. A value of null
   *              indicates that the preview is the rightmost one.
   */
  void move(in nsITaskbarTabPreview aNext);

  /**
   * Used internally to grab the handle to the proxy window.
   */
  [notxpcom]
  nativeWindow GetHWND();

  /**
   * Used internally to ensure that the taskbar knows about this preview. If a
   * preview is not registered, then the API call to set its sibling (via move)
   * will silently fail.
   *
   * This method is only invoked when it is safe to make taskbar API calls.
   */
  [notxpcom]
  void EnsureRegistration();
};