protected override void OnKeyDown(KeyEventArgs e)
{
this.OnKeyDownNavigate(e);
base.OnKeyDown(e);
if (!e.Handled)
{
switch (e.Key)
{
case Key.Up:
case Key.Down:
if (MenuRibbon != null && MenuRibbon.RibbonDisplay == RibbonDisplay.Drop)
{
var c = MenuRibbon.DroppedRibbonItem.Content.FirstFocusableElement();
if (c == null)
{
var p = MenuRibbon.VisualChildren().Where(x => (string)x.GetValue(FrameworkElement.NameProperty) == "PART_Popup").FirstOrDefault() as Popup;
if (p != null)
{
c = p.Child.FirstFocusableElement();
}
}
if (c != null)
{
c.Focus();
e.Handled = true;
}
}
break;
}
}
}
