diff -r 3145aadca3d2 -r 0c551e8818e0 External/Aga.Controls/Tree/IRowLayout.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/External/Aga.Controls/Tree/IRowLayout.cs	Sun May 27 15:16:19 2012 +0000
@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Drawing;
+
+namespace Aga.Controls.Tree
+{
+	internal interface IRowLayout
+	{
+		int PreferredRowHeight
+		{
+			get;
+			set;
+		}
+
+		int PageRowCount
+		{
+			get;
+		}
+
+		int CurrentPageSize
+		{
+			get;
+		}
+
+		Rectangle GetRowBounds(int rowNo);
+
+		int GetRowAt(Point point);
+
+		int GetFirstRow(int lastPageRow);
+
+		void ClearCache();
+	}
+}