/// <summary>
/// Subscribes to Detail's View LayoutUpdated event and sets focus on the first field editor when the event occurs.
/// After the LayoutUpdated event occurs the Details View should be in the state that all field editors are displayed,
/// so it is possible to set focus on the first field editor.
/// </summary>
/// <param name="detailsView">View for the Details ViewModel.</param>
private static void SubscribeDetailsLayoutUpdated(UserControl detailsView)
{
var sections = detailsView.GetChildrenByName("Sections").FirstOrDefault() as FrameworkElement;
if (sections == null)
{
return;
}
EventHandler updateHandler = null;
updateHandler = (o, args) =>
{
sections.LayoutUpdated -= updateHandler;
var children = sections.GetChildrenByType<UserControl>();
if (children.Count > 1)
{
Control item = null;
for (var i = 1; i < children.Count; i++)
{
item = children[i].GetChildrenByType<Control>().FirstOrDefault(c => c.IsFocusable());
if (item != null)
{
item.Focus();
break;
}
}
}
};
sections.LayoutUpdated += updateHandler;
}