public static DependencyObject GetLogicalParent(DependencyObject element, DeferredElementTreeState treeState)
{
DependencyObject parent = null;
if (treeState != null && treeState._oldLogicalParents.ContainsKey(element))
{
parent = treeState._oldLogicalParents[element];
}
else
{
UIElement e = element as UIElement;
if (e != null)
{
parent = e.GetUIParentCore(); // Overriden by FrameworkElement.
}
ContentElement ce = element as ContentElement;
if (ce != null)
{
parent = ce.GetUIParentCore(); // Overriden by FrameworkContentElement.
}
}
return(parent);
}
internal static DependencyObject GetUIParentCore(DependencyObject o)
{
UIElement e = o as UIElement;
if (e != null)
{
return(e.GetUIParentCore());
}
else
{
ContentElement ce = o as ContentElement;
if (ce != null)
{
return(ce.GetUIParentCore());
}
else
{
UIElement3D e3D = o as UIElement3D;
if (e3D != null)
{
return(e3D.GetUIParentCore());
}
}
return(null);
}
}
