53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
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package common
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import (
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"sync"
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"fyne.io/fyne/v2/internal/async"
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)
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// Window defines common functionality for windows.
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type Window struct {
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eventQueue *async.UnboundedFuncChan
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}
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// DestroyEventQueue destroys the event queue.
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func (w *Window) DestroyEventQueue() {
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w.eventQueue.Close()
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}
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// InitEventQueue initializes the event queue.
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func (w *Window) InitEventQueue() {
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// This channel should be closed when the window is closed.
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w.eventQueue = async.NewUnboundedFuncChan()
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}
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// QueueEvent uses this method to queue up a callback that handles an event. This ensures
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// user interaction events for a given window are processed in order.
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func (w *Window) QueueEvent(fn func()) {
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w.eventQueue.In() <- fn
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}
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// RunEventQueue runs the event queue. This should called inside a go routine.
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// This function blocks.
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func (w *Window) RunEventQueue() {
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for fn := range w.eventQueue.Out() {
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fn()
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}
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}
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// WaitForEvents wait for all the events.
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func (w *Window) WaitForEvents() {
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done := DonePool.Get().(chan struct{})
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defer DonePool.Put(done)
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w.eventQueue.In() <- func() { done <- struct{}{} }
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<-done
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}
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var DonePool = sync.Pool{
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New: func() interface{} {
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return make(chan struct{})
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},
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}
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