void ProcessGotFocus(RoutedEventArgs e)
{
if (base.SelectedIndex < 0)
{
base.SelectedIndex = 0;
}
ListBoxItem targetElement = base.ContainerFromItem(base.SelectedItem) as ListBoxItem;
if ((targetElement != null) && !ElementTreeHelper.IsKeyboardFocusWithin(targetElement))
{
targetElement.Focus(FocusState.Programmatic);
}
}
int GetFocusedItemIndex()
{
if (ElementTreeHelper.IsKeyboardFocusWithin(ItemsPresenter))
{
return(0);
}
if (ElementTreeHelper.IsFocused(OKButton))
{
return(1);
}
if (ElementTreeHelper.IsFocused(CancelButton))
{
return(2);
}
return(-1);
}
void ProcessFocus()
{
if ((base.SelectedIndex < 0) && (base.Items.Count > 0))
{
base.SelectedIndex = 0;
}
if ((base.SelectedIndex >= 0) && (base.SelectedIndex < base.Items.Count))
{
ListBoxItem targetElement = base.ContainerFromIndex(base.SelectedIndex) as ListBoxItem;
if (targetElement == null)
{
base.ScrollIntoView(base.SelectedItem);
targetElement = base.ContainerFromIndex(base.SelectedIndex) as ListBoxItem;
}
if ((targetElement != null) && !ElementTreeHelper.IsKeyboardFocusWithin(targetElement))
{
targetElement.Focus(FocusState.Programmatic);
}
}
}