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);

		}

	}

}