private static void ApplyCustomThumbSetting(Thumb thumb)
{
var dragablzItem = thumb.VisualTreeAncestory().OfType<DragablzItem>().FirstOrDefault();
if (dragablzItem == null) throw new ApplicationException("Cannot find parent DragablzItem for custom thumb");
System.Diagnostics.Debug.WriteLine("ApplyCustomThumbSetting " + dragablzItem.IsDragging);
var enableCustomThumb = (bool)thumb.GetValue(IsCustomThumbProperty);
dragablzItem._customThumb = enableCustomThumb ? thumb : null;
dragablzItem._templateSubscriptions.Disposable = dragablzItem.SelectAndSubscribeToThumb().Item2;
if (dragablzItem._customThumb != null && dragablzItem._isTemplateThumbWithMouseAfterSeize)
dragablzItem.Dispatcher.BeginInvoke(new Action(() => dragablzItem._customThumb.RaiseEvent(new MouseButtonEventArgs(InputManager.Current.PrimaryMouseDevice,
0,
MouseButton.Left) { RoutedEvent = MouseLeftButtonDownEvent })));
}
