private void OnSelectExp(SelectExpressionNotification cmd)
{
if (Descriptors.Count == 0)
{
return;
}
if (cmd.SelectorIndex == Index)
{
if (Descriptors[SelectedIndex].abbr != cmd.ExpKey)
{
SelectedIndex = Descriptors.IndexOf(Descriptors.First(d => d.abbr == cmd.ExpKey));
}
DisplayMode = ExpDisMode.Visible;
}
else if (cmd.UpdateShadow)
{
DisplayMode = DisplayMode == ExpDisMode.Visible ? ExpDisMode.Shadow : ExpDisMode.Hidden;
}
}