diff -r 3145aadca3d2 -r 0c551e8818e0 External/Aga.Controls/Tree/TreePath.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/External/Aga.Controls/Tree/TreePath.cs	Sun May 27 15:16:19 2012 +0000
@@ -0,0 +1,68 @@
+using System;
+using System.Text;
+using System.Collections.ObjectModel;
+
+namespace Aga.Controls.Tree
+{
+	public class TreePath
+	{
+		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
+		public static readonly TreePath Empty = new TreePath();
+
+		private object[] _path;
+		public object[] FullPath
+		{
+			get { return _path; }
+		}
+
+		public object LastNode
+		{
+			get
+			{
+				if (_path.Length > 0)
+					return _path[_path.Length - 1];
+				else
+					return null;
+			}
+		}
+
+		public object FirstNode
+		{
+			get
+			{
+				if (_path.Length > 0)
+					return _path[0];
+				else
+					return null;
+			}
+		}
+
+		public TreePath()
+		{
+			_path = new object[0];
+		}
+
+		public TreePath(object node)
+		{
+			_path = new object[] { node };
+		}
+
+		public TreePath(object[] path)
+		{
+			_path = path;
+		}
+
+		public TreePath(TreePath parent, object node)
+		{
+			_path = new object[parent.FullPath.Length + 1];
+			for (int i = 0; i < _path.Length - 1; i++)
+				_path[i] = parent.FullPath[i];
+			_path[_path.Length - 1] = node;
+		}
+
+		public bool IsEmpty()
+		{
+			return (_path.Length == 0);
+		}
+	}
+}