/****************************************************************************************************************
 * CLASS vibrate: helper-class for using vibration on mobiles                                                   *
 *                                                                                                              *
 *           methods: start(duration:Number or Array(Number)):void --> starts vibrating for given amount of ms  *
 *                           └-> may also be an array with format: [vibrate,pause,vibrate,pause...] in ms       *
 *                                                                                                              *
 *                    stop(void):void --> stops vibrating                                                       *
 *                                                                                                              *
 *           objects: patterns --> predefined vibration-patterns                                                *
 ****************************************************************************************************************/


var vibrate = {
	start: function(duration) {
		if (duration==undefined || duration==null) duration = this.patterns.long;
		duration = [duration].reduce(function(a, b) { return [].concat(a).concat(b); });

		if (navigator.vibrate) {
			navigator.vibrate(duration);
		}
		console.debug('vibrate:', duration);
	},
	
	stop: function() {
		if (navigator.vibrate) {
			console.debug('stop vibrating');
			navigator.vibrate([]);
		}
	},
	
	patterns: {
		micro: 50,
		mini: 100,
		short: 200,
		long: 2000,
		alarm: [100,50,100],
		poi: [2000,200,2000]
	}
}