41 lines
818 B
Go
41 lines
818 B
Go
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// 6 july 2014
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package ui
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// TODO Go, Start, Stop
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// This is the ui main loop.
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// It is spawned by Go as a goroutine.
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func uitask() {
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for {
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select {
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case req := <-Do:
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// TODO foreign event
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issue(req)
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case <-stall: // wait for event to finish
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<-stall // see below for information
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}
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}
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}
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// At each event, this is pulsed twice: once when the event begins, and once when the event ends.
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// Do is not processed in between.
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var stall = make(chan struct{})
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// This is the common code for running an event.
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// TODO
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// - define event
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// - figure out how to return values from event handlers
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func doevent(e event) {
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stall <- struct{}{} // enter event handler
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c := make(Doer)
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go func() {
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e.do(c)
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close(c)
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}()
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for req := range c {
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issue(req)
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}
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stall <- struct{}{} // leave event handler
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}
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