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New debounce implementation. #228

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Merged
merged 1 commit into from
Jan 16, 2017
Merged

New debounce implementation. #228

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24 changes: 16 additions & 8 deletions Sources/Signal.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -1842,17 +1842,25 @@ extension SignalProtocol {
/// `interval` seconds apart.
public func debounce(_ interval: TimeInterval, on scheduler: DateSchedulerProtocol) -> Signal<Value, Error> {
precondition(interval >= 0)

let d = SerialDisposable()

return self
.materialize()
.flatMap(.latest) { event -> SignalProducer<Event<Value, Error>, NoError> in
if event.isTerminating {
return SignalProducer(value: event).observe(on: scheduler)
} else {
return SignalProducer(value: event).delay(interval, on: scheduler)
return Signal { observer in
return self.observe { event in
switch event {
case let .value(value):
let date = scheduler.currentDate.addingTimeInterval(interval)
d.inner = scheduler.schedule(after: date) {
observer.send(value: value)
}

case .completed, .failed, .interrupted:
d.inner = scheduler.schedule {
observer.action(event)
}
}
}
.dematerialize()
}
}
}

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