private void TryFocusSelectedItem()
{
var selectedIndex = SelectedIndex;
if (IsDropDownOpen && selectedIndex != -1)
{
var container = ItemContainerGenerator.ContainerFromIndex(selectedIndex);
if (container == null && SelectedIndex != -1)
{
ScrollIntoView(Selection.SelectedIndex);
container = ItemContainerGenerator.ContainerFromIndex(selectedIndex);
}
if (container != null && CanFocus(container))
{
container.Focus();
}
}
}
private void UpdateSelectedContent(AvaloniaPropertyChangedEventArgs e)
{
var index = (int)e.NewValue;
if (index == -1)
{
SelectedContentTemplate = null;
SelectedContent = null;
return;
}
var container = (TabItem)ItemContainerGenerator.ContainerFromIndex(index);
if (container == null)
{
return;
}
UpdateSelectedContent(container);
}
/// <inheritdoc/>
void IItemsPresenterHost.RegisterItemsPresenter(IItemsPresenter presenter)
{
Presenter = presenter;
ItemContainerGenerator.Clear();
}