/// <summary>
/// Update the Adorner for the given element
/// </summary>
/// <param name="element">UIElement for which we're updating AdornerSet</param>
private void UpdateAdorner(UIElement element)
{
Visual adornerLayerParent = VisualTreeHelper.GetParent(this) as Visual;
if (adornerLayerParent == null)
{
// Never update when the adorner layer is not part of a visual tree.
return;
}
// We only expect one to have been removed on any one call.
ArrayList removeList = new ArrayList(1);
if (element != null)
{
// Make sure element is still beneath the adorner decorator
if (!element.IsDescendantOf(adornerLayerParent))
{
removeList.Add(element);
}
else
{
UpdateElementAdorners(element);
}
}
else
{
ICollection keyCollection = ElementMap.Keys;
UIElement[] keys = new UIElement[keyCollection.Count];
keyCollection.CopyTo(keys, 0); // make a static copy of the keys to prevent any possible enumerator exceptions
for (int i = 0; i < keys.Length; i++)
{
UIElement elTemp = (UIElement)keys[i];
// Make sure element is still beneath the adorner decorator
if (!elTemp.IsDescendantOf(adornerLayerParent))
{
removeList.Add(elTemp);
}
else
{
UpdateElementAdorners(elTemp);
}
}
}
for (int i = 0; i < removeList.Count; i++)
{
Clear((UIElement)removeList[i]);
}
}