/*****************************************************************************
 * Open MCT, Copyright (c) 2009-2016, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT 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 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.
 *****************************************************************************/

define(
    [],
    function () {

        /**
         * Designates a specific timer for following. Timelines, for example,
         * use the actively followed timer to display a time-of-interest line
         * and interpret time conductor bounds in the Timeline's relative
         * time frame.
         *
         * @implements {Action}
         * @memberof platform/features/clock
         * @constructor
         * @param {ActionContext} context the context for this action
         */
        function FollowTimerAction(timerService, context) {
            var domainObject = context.domainObject;
            this.perform =
                timerService.setTimer.bind(timerService, domainObject);
        }

        FollowTimerAction.appliesTo = function (context) {
            var model =
                (context.domainObject && context.domainObject.getModel()) ||
                {};

            return model.type === 'timer';
        };

        return FollowTimerAction;
    }
);