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));

 		}

 	}

 }