/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 *
*/

var callback = null;

module.exports = {
    start: function (successCallback, errorCallback) {
        window.removeEventListener("devicemotion", callback);
        callback = function (motion) {
            successCallback({
                x: motion.accelerationIncludingGravity.x,
                y: motion.accelerationIncludingGravity.y,
                z: motion.accelerationIncludingGravity.z,
                timestamp: motion.timeStamp
            });
        };
        window.addEventListener("devicemotion", callback);
    },
    stop: function (successCallback, errorCallback) {
        window.removeEventListener("devicemotion", callback);
    }
};