siesta-lite
Version:
Stress-free JavaScript unit testing and functional testing tool, works in NodeJS and browsers
81 lines (53 loc) • 2.33 kB
JavaScript
/*
Siesta 5.6.1
Copyright(c) 2009-2022 Bryntum AB
https://bryntum.com/contact
https://bryntum.com/products/siesta/license
*/
Class('Siesta.Util.Throttler', {
has : {
lastActivationTime : null,
func : { required : true },
scope : { required : true },
// activate only after this amount of time after last tick (ignoring any preceding ticks)
buffer : null,
// activate at least every `throttle` time
throttle : null,
bufferTimeoutId : null,
args : null
},
methods : {
tick : function () {
var now = new Date() - 0
this.args = arguments
if (this.throttle != null) {
if (!this.lastActivationTime) this.lastActivationTime = now
var timeAfterLastActivation = now - this.lastActivationTime
if (timeAfterLastActivation > this.throttle) this.activate()
}
if (this.buffer != null) {
var me = this
if (this.bufferTimeoutId) clearTimeout(this.bufferTimeoutId)
this.bufferTimeoutId = setTimeout(function () {
me.activate()
}, this.buffer)
}
},
activate : function () {
this.lastActivationTime = new Date() - 0
if (this.bufferTimeoutId) clearTimeout(this.bufferTimeoutId)
this.bufferTimeoutId = null
var args = this.args
this.args = null
this.func.apply(this.scope, args)
},
cancel : function () {
if (this.bufferTimeoutId) clearTimeout(this.bufferTimeoutId)
this.bufferTimeoutId = null
this.args = null
},
flush : function () {
if (this.bufferTimeoutId != null) this.activate()
}
}
})