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time_js.go
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time_js.go
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// +build js
package ninchat
import (
"github.com/gopherjs/gopherjs/js"
)
type duration int64
const (
second duration = 1000
millisecond = 1
)
type timeTime int64
func timeNow() timeTime {
return timeTime(js.Global.Get("Date").New().Call("getTime").Int64())
}
func timeAdd(t timeTime, d duration) timeTime {
return t + timeTime(d)
}
func timeSub(t1, t2 timeTime) duration {
return duration(t1 - t2)
}
type timer struct {
C chan struct{}
id *js.Object
}
func newTimer(timeout duration) (t *timer) {
t = &timer{
C: make(chan struct{}, 1),
}
if timeout >= 0 {
t.Reset(timeout)
}
return
}
func (timer *timer) Active() bool {
return timer.id != nil
}
func (timer *timer) Reset(timeout duration) {
timer.Stop()
timer.id = js.Global.Call("setTimeout", func() {
timer.id = nil
timer.C <- struct{}{}
}, timeout)
}
func (timer *timer) Stop() {
if timer.id != nil {
js.Global.Call("clearTimeout", timer.id)
timer.id = nil
}
}