TimedTapGestureRecognizer.swift

protocol TimedTapGestureRecognizerDelegate: class {
    func delayInSecondsForTimedTapGestureRecognizer(recognizer: TimedTapGestureRecognizer) -> Double
}

final class TimedTapGestureRecognizer: UITapGestureRecognizer {

    weak var timedTapGestureRecognizerDelegate: TimedTapGestureRecognizerDelegate?

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent) {
        super.touchesBegan(touches, withEvent: event)
        let delayDuration = timedTapGestureRecognizerDelegate?.delayInSecondsForTimedTapGestureRecognizer(self) ?? 0.4
        delay(delayDuration) {
            if self.state != .Recognized {
                self.state = .Failed
            }
        }
    }
}