private void AppShell_KeyDown()

in TPM Parser/AppShell.xaml.cs [115:157]

• 40 lines of code
• 19 McCabe index (conditional complexity)

        private void AppShell_KeyDown(object sender, KeyRoutedEventArgs e)
        {
            FocusNavigationDirection direction = FocusNavigationDirection.None;
            switch (e.Key)
            {
                case Windows.System.VirtualKey.Left:
                case Windows.System.VirtualKey.GamepadDPadLeft:
                case Windows.System.VirtualKey.GamepadLeftThumbstickLeft:
                case Windows.System.VirtualKey.NavigationLeft:
                    direction = FocusNavigationDirection.Left;
                    break;
                case Windows.System.VirtualKey.Right:
                case Windows.System.VirtualKey.GamepadDPadRight:
                case Windows.System.VirtualKey.GamepadLeftThumbstickRight:
                case Windows.System.VirtualKey.NavigationRight:
                    direction = FocusNavigationDirection.Right;
                    break;

                case Windows.System.VirtualKey.Up:
                case Windows.System.VirtualKey.GamepadDPadUp:
                case Windows.System.VirtualKey.GamepadLeftThumbstickUp:
                case Windows.System.VirtualKey.NavigationUp:
                    direction = FocusNavigationDirection.Up;
                    break;

                case Windows.System.VirtualKey.Down:
                case Windows.System.VirtualKey.GamepadDPadDown:
                case Windows.System.VirtualKey.GamepadLeftThumbstickDown:
                case Windows.System.VirtualKey.NavigationDown:
                    direction = FocusNavigationDirection.Down;
                    break;
            }

            if (direction != FocusNavigationDirection.None)
            {
                var control = FocusManager.FindNextFocusableElement(direction) as Control;
                if (control != null)
                {
                    control.Focus(FocusState.Programmatic);
                    e.Handled = true;
                }
            }
        }