public static void SetParentLinkForChildren <T>(this IGuidTreeItemGeneric <T> guidTreeItem) where T : class, IGuidTreeItemGeneric <T>
{
if (guidTreeItem.Children == null)
{
return;
}
foreach (var child in guidTreeItem.Children)
{
child.Parent = guidTreeItem;
child.UpdateAncestry();
//Recurse
child.SetParentLinkForChildren();
}
}
public static string GetAncestry <T>(this IGuidTreeItemGeneric <T> guidTreeItem, bool usePopulatedParentIfPossible = false)
{
if (usePopulatedParentIfPossible && guidTreeItem.Parent != null && guidTreeItem.Parent.Ancestry != null)
{
return(guidTreeItem.Parent.Ancestry + guidTreeItem.Id);
}
var ancestry = new List <IGuidTreeItemGeneric <T> >();
var currentStage = guidTreeItem;
while (currentStage != null)
{
if (ancestry.Contains(currentStage))
{
throw new StackOverflowException("The current tree structure contains a loop");
}
ancestry.Add(currentStage);
currentStage = currentStage.Parent;
}
return(BuildAcestryString(ancestry));
}
public static void UpdateAncestry <T>(this IGuidTreeItemGeneric <T> guidTreeItem, bool usePopulatedParentIfPossible = false)
{
guidTreeItem.Ancestry = guidTreeItem.GetAncestry(usePopulatedParentIfPossible);
}
public static int GetTreeLevel <T>(this IGuidTreeItemGeneric <T> guidTreeItem)
{
return(guidTreeItem.Ancestry.Length / Guid.Empty.ToString().Length);
}
