127 lines
2.4 KiB
JavaScript
127 lines
2.4 KiB
JavaScript
|
/**
|
|||
|
|
* 定时器
|
|||
|
|
* @class Timer
|
|||
|
|
* @constructor
|
|||
|
|
* @param {String} id 定时器的唯一标识
|
|||
|
|
* @param {Number} delay 初次运行的延迟时间
|
|||
|
|
* @param {Number} interval 每次运行的间隔时间
|
|||
|
|
* @param {Object} callback 定时执行的方法，参数为Timer本身
|
|||
|
|
* @param {mix} context 传入回调方法的上下文
|
|||
|
|
*/
|
|||
|
|
var Timer = function(id, delay, interval, callback, context) {
|
|||
|
|
this.id = id;
|
|||
|
|
this.delay = delay;
|
|||
|
|
this.interval = interval;
|
|||
|
|
this.callback = callback;
|
|||
|
|
this.context = context;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 开始执行定时器
|
|||
|
|
* @method start
|
|||
|
|
*/
|
|||
|
|
Timer.prototype.start = function() {
|
|||
|
|
if (this.timer !== undefined) {
|
|||
|
|
clearTimeout(this.timer);
|
|||
|
|
delete this.timer;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
var _this = this;
|
|||
|
|
var execute = function() {
|
|||
|
|
_this.callback(_this);
|
|||
|
|
|
|||
|
|
//在回调函数中被中止
|
|||
|
|
if (_this.timer !== undefined) {
|
|||
|
|
_this.timer = setTimeout(execute, _this.interval);
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
this.timer = setTimeout(execute, this.delay);
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 中止定时器
|
|||
|
|
* @method halt
|
|||
|
|
*/
|
|||
|
|
Timer.prototype.halt = function() {
|
|||
|
|
clearTimeout(this.timer);
|
|||
|
|
delete this.timer;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 定时器是否在运行中
|
|||
|
|
* @method isRunning
|
|||
|
|
* @return Boolean
|
|||
|
|
*/
|
|||
|
|
Timer.prototype.isRunning = function() {
|
|||
|
|
return this.timer !== undefined;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 定时器管理，这是一个单例
|
|||
|
|
* @class TimerManager
|
|||
|
|
* @constructor
|
|||
|
|
*/
|
|||
|
|
var TimerManager = function() {
|
|||
|
|
var instance = this;
|
|||
|
|
this.timers = {};
|
|||
|
|
|
|||
|
|
TimerManager = function() {
|
|||
|
|
return instance;
|
|||
|
|
};
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 添加一个定时器
|
|||
|
|
* @method addTimer
|
|||
|
|
* @param {Object} 要添加的Timer
|
|||
|
|
*/
|
|||
|
|
TimerManager.prototype.addTimer = function(timer) {
|
|||
|
|
if (this.timers[timer.id] === undefined) {
|
|||
|
|
this.timers[timer.id] = timer;
|
|||
|
|
}
|
|||
|
|
return this;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 根据唯一标识获取定时器
|
|||
|
|
* @method getTimer
|
|||
|
|
* @param {String} id 定时器的id
|
|||
|
|
* @return {Object}
|
|||
|
|
*/
|
|||
|
|
TimerManager.prototype.getTimer = function(id) {
|
|||
|
|
return this.timers[id];
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 删除一个定时器
|
|||
|
|
* @method halt
|
|||
|
|
* @param {String} id 定时器的id
|
|||
|
|
*/
|
|||
|
|
TimerManager.prototype.deleteTimer = function(id) {
|
|||
|
|
if (this.timers[id] !== undefined) {
|
|||
|
|
this.timers[id].halt();
|
|||
|
|
}
|
|||
|
|
delete this.timers[id];
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 定时器全部开始运行
|
|||
|
|
* @method startAll
|
|||
|
|
*/
|
|||
|
|
TimerManager.prototype.startAll = function() {
|
|||
|
|
for (id in this.timers) {
|
|||
|
|
this.timers[id].start();
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 定时器全部中止
|
|||
|
|
* @method haltAll
|
|||
|
|
*/
|
|||
|
|
TimerManager.prototype.haltAll = function() {
|
|||
|
|
for (id in this.timers) {
|
|||
|
|
this.timers[id].halt();
|
|||
|
|
}
|
|||
|
|
};
|