protected void OnNodeChildrenChanged(NodeChildrenChangedArgs <TNode> args)
{
EventHandler <NodeChildrenChangedArgs <TNode> > handler = NodeChildrenChanged;
if (handler != null)
{
handler(this, args);
}
}
private void m_parent_NodeChildrenChanged(object sender, NodeChildrenChangedArgs <T> args)
{
if (args.Parent.Equals(this.m_item))
{
if (args.Action == NotifyCollectionChangedAction.Add)
{
Debug.Assert(!m_children.Contains(m_parent[args.Child]));
m_children.Add(m_parent[args.Child]);
}
else if (args.Action == NotifyCollectionChangedAction.Remove)
{
Debug.Assert(m_children.Contains(m_parent[args.Child]));
m_children.Remove(m_parent[args.Child]);
}
else
{
throw new InvalidOperationException();
}
}
else
{
Debug.Assert(args.Parent != null);
}
}