internal static void HandleRootSplit <K, T>(this IAListTreeObserver <K, T> self, AListNode <K, T> oldRoot, AListNode <K, T> newLeft, AListNode <K, T> newRight, AListInnerBase <K, T> newRoot)
{
self.HandleNodeReplaced(oldRoot, newLeft, newRight);
self.NodeAdded(newLeft, newRoot);
self.NodeAdded(newRight, newRoot);
self.RootChanged(newRoot, false);
}
internal static void DoAttach <K, T>(this IAListTreeObserver <K, T> observer, AListBase <K, T> list, AListNode <K, T> root)
{
var childrenFirst = observer.Attach(list);
observer.RootChanged(list, root, false);
if (childrenFirst != null && root != null)
{
AddAllRecursively(observer, childrenFirst.Value, root);
}
}
internal static void HandleRootUnsplit <K, T>(this IAListTreeObserver <K, T> self, AListInnerBase <K, T> oldRoot, AListNode <K, T> newRoot)
{
Debug.Assert(oldRoot.LocalCount == 0 || (oldRoot.LocalCount == 1 && oldRoot.Child(0) == newRoot));
self.NodeRemoved(newRoot, oldRoot);
self.RootChanged(newRoot, false);
}
internal static void Clear <K, T>(this IAListTreeObserver <K, T> self)
{
self.RootChanged(null, true);
}
internal static void Clear <K, T>(this IAListTreeObserver <K, T> self, AListBase <K, T> list)
{
self.RootChanged(list, null, true);
}