public static T GetFirstParentOf <T> (this DependencyObject start, eTraversalTree tree = eTraversalTree.Visual) where T : DependencyObject
{
var parentSelector = ParentSelectorForTree(tree);
var childSelector = ChildSelectorForTree(tree);
return(TreeTraversal <DependencyObject> .GetFirstParentOfType <T>(start, getParentMethodOverride : _ => parentSelector(_), getChildrenMethodOverride : _ => childSelector(_)));
}
public static ChildrenSelector ChildSelectorForTree(eTraversalTree targetTree)
{
switch (targetTree)
{
case eTraversalTree.Visual: return(GetVisualChildren);
case eTraversalTree.Logical: return(GetLogicalChildren);
default: return(GetVisualAndLogicalChildren);
}
}
public static ParentSelector ParentSelectorForTree(eTraversalTree targetTree)
{
switch (targetTree)
{
case eTraversalTree.Visual: return(GetVisualParent);
case eTraversalTree.Logical: return(GetLogicalParent);
default: return(_ => GetVisualParent(_) ?? GetLogicalParent(_));
}
}
