/// <summary>
/// Obtains the parent in the selection path for given item</summary>
/// <param name="selectionPathProvider">Selection path provider</param>
/// <param name="item">Item whose parent path is obtained</param>
/// <returns>Parent path of given item</returns>
public static object Parent(this ISelectionPathProvider selectionPathProvider, object item)
{
if (selectionPathProvider != null)
{
var selectionPath = selectionPathProvider.GetSelectionPath(item);
if ((selectionPath != null) && selectionPath.Count > 1)
{
return(selectionPath[selectionPath.Count - 2]);
}
}
return(null);
}
/// <summary>
/// Gets the ancestry of the item in selection path,
/// starting with the item's parent and ending with the top level</summary>
/// <param name="selectionPathProvider">Selection path provider</param>
/// <param name="item">Item whose ancestry is obtained</param>
/// <returns>Ancestry of the item in selection path</returns>
public static IEnumerable <object> Ancestry(this ISelectionPathProvider selectionPathProvider, object item)
{
if (selectionPathProvider != null)
{
var selectionPath = selectionPathProvider.GetSelectionPath(item);
if ((selectionPath != null) && selectionPath.Count > 1)
{
for (int i = selectionPath.Count - 2; i >= 0; --i)
{
yield return(selectionPath[i]);
}
}
}
}
