public static void OnDoubleTap(GestureDelegate method)
    {
        if (GestureDoubleTap._instance == null)
        {
            GestureDoubleTap gestureTap = new GestureDoubleTap();
            SimpleGesture.Instance.oneFingerGestures.Add(gestureTap);
        }

        GestureDoubleTap._instance.AddDelegate(method);
    }
 public override void Delete()
 {
     GestureDoubleTap._instance = null;
 }
    // CONSTRUCTOR: ----------------------------------------------------------------------------------------------------

    public GestureDoubleTap() : base()
    {
        GestureDoubleTap._instance = this;
    }