/*****************************************************************************
 * Open MCT Web, Copyright (c) 2014-2015, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT Web is licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * Open MCT Web includes source code licensed under additional open source
 * licenses. See the Open Source Licenses file (LICENSES.md) included with
 * this source code distribution or the Licensing information page available
 * at runtime from the About dialog for additional information.
 *****************************************************************************/
/*global define,Promise*/

define(
    [],
    function () {
        "use strict";

        /**
         * Updates the title of the current window to reflect the name
         * of the currently navigated-to domain object.
         * @constructor
         */
        function WindowTitler(navigationService, $rootScope, $document) {
            // Look up name of the navigated domain object...
            function getNavigatedObjectName() {
                var navigatedObject = navigationService.getNavigation();
                return navigatedObject && navigatedObject.getModel().name;
            }

            // Set the window title...
            function setTitle(name) {
                $document[0].title = name;
            }

            // Watch the former, and invoke the latter
            $rootScope.$watch(getNavigatedObjectName, setTitle);
        }

        return WindowTitler;
    }
);