private void DetachVisibilityHandler(WindowCommandsItem container)
{
if (container != null)
{
container.VisibilityPropertyChangeNotifier = null;
}
}
private void AttachVisibilityHandler(WindowCommandsItem container, UIElement item)
{
if (container != null)
{
if (null == item)
{
// if item is not a UIElement then maybe the ItemsSource binds to a collection of objects
// and an ItemTemplate is set, so let's try to solve this
container.ApplyTemplate();
var content = container.ContentTemplate?.LoadContent() as UIElement;
if (null == content)
{
// no UIElement was found, so don't show this container
container.Visibility = Visibility.Collapsed;
}
return;
}
container.Visibility = item.Visibility;
var isVisibilityNotifier = new PropertyChangeNotifier(item, UIElement.VisibilityProperty);
isVisibilityNotifier.ValueChanged += VisibilityPropertyChanged;
container.VisibilityPropertyChangeNotifier = isVisibilityNotifier;
}
}