public static void HideTip()
 {
     OnTipChanged?.Invoke(null, new GlobalTipChangeEvent {
         Title   = "",
         Message = "",
         Show    = false,
     });
 }
 public static void ShowTip(string title, string message)
 {
     OnTipChanged?.Invoke(null, new GlobalTipChangeEvent {
         Title   = title ?? "",
         Message = message ?? "",
         Show    = true,
     });
 }