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168 lines
3.9 KiB
168 lines
3.9 KiB
define(['events'], function(EventEmitter) {
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EventEmitter = EventEmitter.EventEmitter
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function Stopwatch(countDownMS, options) {
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STATUS = {
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STOPPED: 0,
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RUNNING: 1,
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COMPLETE: 2,
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}
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this.stoptime = 0
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this.refTime = 0
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this.tickTimer = 0
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this.almostDoneFired = false
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this.doneFired = false
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this.countDownMS = countDownMS || false
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this.ms = this.countDownMS || 0
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this._elapsedMS = 0
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this.state = STATUS.STOPPED
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if(!options) {options = {}}
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this.refreshRateMS = options.refreshRateMS || 50
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this.almostDoneMS = options.almostDoneMS || 10000
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this.reset(countDownMS)
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return this
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}
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Stopwatch.prototype = {
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start: function() {
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if (this.tickTimer) {
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clearInterval(this.tickTimer)
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}
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this.state = STATUS.RUNNING
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this.refTime = new Date().getTime()
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this.refTime -= this._elapsedMS
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var self = this
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this.tickTimer = setInterval(function(){self._updateTime()}, this.refreshRateMS)
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this._updateTime(this)
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},
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stop: function() {
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if(this.tickTimer) {
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clearInterval(this.tickTimer)
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}
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if(this.state === STATUS.RUNNING) {
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this.state = STATUS.STOPPED
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this._updateTime(this)
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this.emit('stop')
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this.emit('forcestop')
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}
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},
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reset: function(countDownMS) {
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this.stop()
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this.state = STATUS.STOPPED
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this.doneFired = false
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this.almostDoneFired = false
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this._elapsedMS = 0
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this.refTime = new Date().getTime()
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if(countDownMS) {
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this.countDownMS = countDownMS
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}
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this.ms = this.countDownMS || 0
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this.emit('time',{ms: this.ms})
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},
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startstop: function() {
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if(this.state === STATUS.STOPPED) {
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this.start()
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return true
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} else {
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this.stop()
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return false
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}
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},
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_updateTime: function() {
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var self = this
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if(self.countDownMS > 0) {
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self._timerCountdown(self)
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} else {
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self._stopwatchCountup(self)
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}
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},
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_timerCountdown: function() {
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var self = this
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var currentTime = new Date().getTime()
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self._elapsedMS = currentTime - self.refTime
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var remainingSeconds = self.countDownMS - self._elapsedMS
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if(remainingSeconds < 0) {
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remainingSeconds = 0
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}
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self.ms = remainingSeconds
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self.emit('time', {ms: self.ms})
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if(remainingSeconds <= 0) {
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self.stop()
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if(!self.doneFired) {
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self.doneFired = true
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self.state = STATUS.COMPLETE
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self.emit('done')
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}
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} else if (remainingSeconds < self.almostDoneMS) {
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if(!self.almostDoneFired) {
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self.almostDoneFired = true
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self.emit('almostdone')
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}
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}
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},
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_stopwatchCountup: function() {
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var self = this
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var currentTime = new Date().getTime()
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self._elapsedMS = currentTime - self.refTime
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self.ms = self._elapsedMS
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self.emit('time', {ms: self.ms})
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},
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onDone: function(cb) {
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this.on('done', cb)
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return this
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},
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onAlmostDone: function(cb) {
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this.on('almostDone', cb)
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return this
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},
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onTime: function(cb) {
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this.on('time', cb)
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return this
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},
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onStop: function(cb) {
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this.on('stop', cb)
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return this
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},
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}
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Object.assign(Stopwatch.prototype, EventEmitter.prototype)
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return Stopwatch
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})
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