diff -r 3145aadca3d2 -r 0c551e8818e0 External/Aga.Controls/Tree/ListModel.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/External/Aga.Controls/Tree/ListModel.cs	Sun May 27 15:16:19 2012 +0000
@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Collections;
+
+namespace Aga.Controls.Tree
+{
+	public class ListModel : TreeModelBase
+	{
+		private IList _list;
+
+		public int Count
+		{
+			get { return _list.Count; }
+		}
+
+		public ListModel()
+		{
+			_list = new List<object>();
+		}
+
+		public ListModel(IList list)
+		{
+			_list = list;
+		}
+
+		public override IEnumerable GetChildren(TreePath treePath)
+		{
+			return _list;
+		}
+
+		public override bool IsLeaf(TreePath treePath)
+		{
+			return true;
+		}
+
+		public void AddRange(IEnumerable items)
+		{
+			foreach (object obj in items)
+				_list.Add(obj);
+			OnStructureChanged(new TreePathEventArgs(TreePath.Empty));
+		}
+
+		public void Add(object item)
+		{
+			_list.Add(item);
+			OnNodesInserted(new TreeModelEventArgs(TreePath.Empty, new int[] { _list.Count - 1 }, new object[] { item }));
+		}
+
+		public void Clear()
+		{
+			_list.Clear();
+			OnStructureChanged(new TreePathEventArgs(TreePath.Empty));
+		}
+	}
+}