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45 lines
931 B
45 lines
931 B
package common
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import (
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"time"
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"sync"
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)
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/* Debouncer */
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type Debouncer struct {
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Ch chan struct{}
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quit chan struct{}
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dur time.Duration
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mtx sync.Mutex
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timer *time.Timer
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}
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func NewDebouncer(dur time.Duration) *Debouncer {
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var timer *time.Timer
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var ch = make(chan struct{})
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var quit = make(chan struct{})
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var mtx sync.Mutex
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fire := func() {
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go func() {
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select {
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case ch <- struct{}{}:
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case <-quit:
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}
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}()
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mtx.Lock(); defer mtx.Unlock()
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timer.Reset(dur)
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}
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timer = time.AfterFunc(dur, fire)
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return &Debouncer{Ch:ch, dur:dur, quit:quit, mtx:mtx, timer:timer}
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}
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func (d *Debouncer) Reset() {
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d.mtx.Lock(); defer d.mtx.Unlock()
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d.timer.Reset(d.dur)
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}
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func (d *Debouncer) Stop() bool {
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d.mtx.Lock(); defer d.mtx.Unlock()
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close(d.quit)
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return d.timer.Stop()
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}
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