private static void UpdateItemsView(ItemsControl sender, AvaloniaPropertyChangedEventArgs e)
{
if (e.NewValue is null)
{
sender.ItemsPanel = ItemsControl.ItemsPanelProperty.GetDefaultValue(sender.GetType());
sender.DataTemplates.Clear();
return;
}
var view = (ItemsControlView)e.NewValue;
sender.ItemsPanel = view.PanelTemplate;
sender.DataTemplates.Clear();
sender.DataTemplates.AddRange(view.DataTemplates);
var template = sender.GetBaseValue(TemplatedControl.TemplateProperty, BindingPriority.LocalValue);
sender.SetValue(TemplatedControl.TemplateProperty, null);
sender.ApplyTemplate();
if (template.HasValue)
{
sender.SetValue(TemplatedControl.TemplateProperty, template.Value);
}
else
{
sender.ClearValue(TemplatedControl.TemplateProperty);
}
sender.ApplyTemplate();
}
private static void RestoreOriginalStyles([NotNull] ItemsControl listBox)
{
if (!(listBox.GetValue(_originalStylesProperty) is OriginalStyles originalStyles))
{
return;
}
listBox.ClearValue(_originalStylesProperty);
listBox.Style = originalStyles.Style;
listBox.ItemContainerStyle = originalStyles.ItemContainerStyle;
listBox.ItemTemplate = originalStyles.ItemTemplate;
}
private static void ClearItemsControlManager(ItemsControl itemsControl)
{
itemsControl.ClearValue(ItemsControlManagerProperty);
}