/// <summary>
        /// Handler for mouse down on Left Trigger
        /// </summary>
        /// <param name="sender">Originating UI element for this event</param>
        /// <param name="e">mouse button event args</param>
        private void PressLeftTrigger_MouseDown(object sender, MouseButtonEventArgs e)
        {
            VirtualControllerViewModel viewModel = this.DataContext as VirtualControllerViewModel;

            viewModel.PressLeftTrigger();
        }