diff -r 3145aadca3d2 -r 0c551e8818e0 External/Aga.Controls/Tree/SortedTreeModel.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/External/Aga.Controls/Tree/SortedTreeModel.cs	Sun May 27 15:16:19 2012 +0000
@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Collections;
+
+namespace Aga.Controls.Tree
+{
+	public class SortedTreeModel: TreeModelBase
+	{
+		private ITreeModel _innerModel;
+		public ITreeModel InnerModel
+		{
+			get { return _innerModel; }
+		}
+
+		private IComparer _comparer;
+		public IComparer Comparer
+		{
+			get { return _comparer; }
+			set 
+			{ 
+				_comparer = value;
+				OnStructureChanged(new TreePathEventArgs(TreePath.Empty));
+			}
+		}
+
+		public SortedTreeModel(ITreeModel innerModel)
+		{
+			_innerModel = innerModel;
+			_innerModel.NodesChanged += new EventHandler<TreeModelEventArgs>(_innerModel_NodesChanged);
+			_innerModel.NodesInserted += new EventHandler<TreeModelEventArgs>(_innerModel_NodesInserted);
+			_innerModel.NodesRemoved += new EventHandler<TreeModelEventArgs>(_innerModel_NodesRemoved);
+			_innerModel.StructureChanged += new EventHandler<TreePathEventArgs>(_innerModel_StructureChanged);
+		}
+
+		void _innerModel_StructureChanged(object sender, TreePathEventArgs e)
+		{
+			OnStructureChanged(e);
+		}
+
+		void _innerModel_NodesRemoved(object sender, TreeModelEventArgs e)
+		{
+			OnStructureChanged(new TreePathEventArgs(e.Path));
+		}
+
+		void _innerModel_NodesInserted(object sender, TreeModelEventArgs e)
+		{
+			OnStructureChanged(new TreePathEventArgs(e.Path));
+		}
+
+		void _innerModel_NodesChanged(object sender, TreeModelEventArgs e)
+		{
+			OnStructureChanged(new TreePathEventArgs(e.Path));
+		}
+
+		public override IEnumerable GetChildren(TreePath treePath)
+		{
+			if (Comparer != null)
+			{
+				ArrayList list = new ArrayList();
+				IEnumerable res = InnerModel.GetChildren(treePath);
+				if (res != null)
+				{
+					foreach (object obj in res)
+						list.Add(obj);
+					list.Sort(Comparer);
+					return list;
+				}
+				else
+					return null;
+			}
+			else
+				return InnerModel.GetChildren(treePath);
+		}
+
+		public override bool IsLeaf(TreePath treePath)
+		{
+			return InnerModel.IsLeaf(treePath);
+		}
+	}
+}