protected override void OnDetaching()
{
base.OnDetaching();
this.AssociatedObject.Loaded -= this.AssociatedObjectLoaded;
this.AssociatedObject.TextChanged -= this.AssociatedObjectTextChanged;
this.notifier = null;
}
private void AssociatedObjectLoaded(object sender, System.Windows.RoutedEventArgs e)
{
this.adorner = new TextBlockAdorner(this.AssociatedObject, this.Label, this.LabelStyle);
this.UpdateAdorner();
//AddValueChanged for IsFocused in a weak manner
this.notifier = new WeakPropertyChangeNotifier(this.AssociatedObject, UIElement.IsFocusedProperty);
this.notifier.ValueChanged += new EventHandler(this.UpdateAdorner);
}
private static void OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
WeakPropertyChangeNotifier notifier = (WeakPropertyChangeNotifier)d;
notifier.ValueChanged?.Invoke(notifier, EventArgs.Empty);
}