aerc/lib/ui/invalidatable.go -rw-r--r-- 344 bytes View raw
                                                                                
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package ui

import (
	"sync/atomic"
)

type Invalidatable struct {
	onInvalidate atomic.Value
}

func (i *Invalidatable) OnInvalidate(f func(d Drawable)) {
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i.onInvalidate.Store(f) } func (i *Invalidatable) DoInvalidate(d Drawable) {
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v := i.onInvalidate.Load() if v == nil { return } f := v.(func(d Drawable)) if f != nil { f(d) } }