using System;

 using System.Collections.Generic;

 using System.Text;

 using System.Windows.Forms;

 using System.Security.Permissions;

 using System.Drawing;

 namespace Aga.Controls.Tree

 {

 	internal class ResizeColumnState: ColumnState

 	{

 		private Point _initLocation;

 		private int _initWidth;

 		public ResizeColumnState(TreeViewAdv tree, TreeColumn column, Point p)

 			: base(tree, column)

 		{

 			_initLocation = p;

 			_initWidth = column.Width;

 		}

 		public override void KeyDown(KeyEventArgs args)

 		{

 			args.Handled = true;

 			if (args.KeyCode == Keys.Escape)

 				FinishResize();

 		}

 		public override void MouseDown(TreeNodeAdvMouseEventArgs args)

 		{

 		}

 		public override void MouseUp(TreeNodeAdvMouseEventArgs args)

 		{

 			FinishResize();

 		}

 		private void FinishResize()

 		{

 			Tree.ChangeInput();

 			Tree.FullUpdate();

 			Tree.OnColumnWidthChanged(Column);

 		}

         public override bool MouseMove(MouseEventArgs args)

         {

 			Column.Width = _initWidth + args.Location.X - _initLocation.X;

             Tree.UpdateView();

             return true;

         }

 		public override void MouseDoubleClick(TreeNodeAdvMouseEventArgs args)

 		{

 			Tree.AutoSizeColumn(Column);

 		}

 	}

 }