private Node GetRelativeSource(Node target)
{
Node source = null;
switch (RelativeSourceMode)
{
case RelativeSourceMode.Self:
source = target.Parent;
break;
case RelativeSourceMode.FindAncestor:
case RelativeSourceMode.SerializationContext:
source = FindAncestor(target);
break;
case RelativeSourceMode.PreviousData:
throw new NotImplementedException();
}
return source;
}
protected Node(Node parent)
{
Parent = parent;
TargetBindings = new List<Func<object>>();
}
private Node FindAncestor(Node target)
{
int level = 1;
Node parent = target.Parent;
while (parent != null)
{
if (level == Level)
return parent;
if (parent.Parent == null && RelativeSourceMode == RelativeSourceMode.SerializationContext)
return parent;
parent = parent.Parent;
if (!(parent is ContextValueNode))
level++;
}
return null;
}
