//public static void SetForCascadingDeletion(this IGuidTreeItem guidTreeItem)
//{
// //Recursive loop detection
// if(guidTreeItem.PendingDeletion)
// return; //We have been here before
// guidTreeItem.PendingDeletion = true;
// //Recurse down the tree
// foreach (var child in guidTreeItem.Children)
// {
// child.Parent = null;
// child.SetForCascadingDeletion();
// }
//}
public static void SetParentLinkForChildren(this IGuidTreeItem guidTreeItem)
{
if (guidTreeItem.Children == null)
{
return;
}
foreach (var child in guidTreeItem.Children)
{
child.Parent = guidTreeItem;
child.UpdateAncestry();
//Recurse
child.SetParentLinkForChildren();
}
}
public static string GetAncestry(this IGuidTreeItem guidTreeItem)
{
var ancestry = new List <IGuidTreeItem>();
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(this IGuidTreeItem guidTreeItem)
{
guidTreeItem.Ancestry = guidTreeItem.GetAncestry();
}
