func addTapGesture(action: @escaping () -> Void) {
        let tapGesture = UITapGestureRecognizer { (gr) in
            print("UITapGestureRecognizer fire")
            switch gr.state {
            case .ended:
                self.backgroundColor = UIColor.clear
                action()
            default:
                return
            }
        }

        let longPressGesture = UILongPressGestureRecognizer { (gr) in
            print("UILongPressGestureRecognizer fire")
            switch gr.state {
            case .began:
                self.backgroundColor = UIColor.lightGray
            case .ended:
                self.backgroundColor = UIColor.clear
                action()
            default:
                return
            }
        }
        longPressGesture.minimumPressDuration = 0.05
        longPressGesture.cancelsTouchesInView = false

        self.addGestureRecognizer(tapGesture)
        self.addGestureRecognizer(longPressGesture)
    }