private static void IsShowChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
BadgeAdorner adorner = BadgeAdorner.GetAdorner(d);
if (adorner == null)
{
return;
}
if ((bool)e.NewValue)
{
adorner.ShowAdorner();
}
else
{
adorner.HideAdorner();
}
}
private static void BadgeTypeChangeCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
BadgeAdorner adorner = BadgeAdorner.GetAdorner(d);
if (adorner == null)
{
return;
}
if ((BadgeType)e.NewValue == BadgeType.Dot)
{
adorner.SowDot();
}
else
{
adorner.ShowNormal();
}
}
private static void HasAdornerChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var element = d as FrameworkElement;
if ((bool)e.NewValue)
{
if (element != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(element);
if (adornerLayer != null)
{
adornerLayer.Add(new BadgeAdorner(element as UIElement));
}
else
{
//layer为null，说明还未load过（整个可视化树中没有装饰层的情况不考虑）
//在控件的loaded事件内生成装饰件
element.Loaded += (s1, e1) => {
var adorner = new BadgeAdorner(element);
AdornerLayer.GetAdornerLayer(element).Add(adorner);
};
}
}
}
else
{
//装饰件不可用，移除装饰件
AdornerLayer layer = AdornerLayer.GetAdornerLayer(element);
if (layer != null)
{
Adorner[] AllAdorners = layer.GetAdorners(element);
if (AllAdorners != null)
{
IEnumerable <Adorner> desAdorners = AllAdorners.Where(p => p is BadgeAdorner);
if (desAdorners != null && desAdorners.Count() > 0)
{
desAdorners.ToList().ForEach(p => layer.Remove(p));
}
}
}
}
}