using System;

 using System.Collections.Generic;

 using System.Text;

 using System.Drawing;

 using System.Windows.Forms;

 using System.Reflection;

 using System.ComponentModel;

 namespace Aga.Controls.Tree.NodeControls

 {

 	public class NodeTextBox : BaseTextControl

 	{

 		private const int MinTextBoxWidth = 30;

 		public NodeTextBox()

 		{

 		}

 		protected override Size CalculateEditorSize(EditorContext context)

 		{

 			if (Parent.UseColumns)

 				return context.Bounds.Size;

 			else

 			{

 				Size size = GetLabelSize(context.CurrentNode, context.DrawContext, _label);

 				int width = Math.Max(size.Width + Font.Height, MinTextBoxWidth); // reserve a place for new typed character

 				return new Size(width, size.Height);

 			}

 		}

 		public override void KeyDown(KeyEventArgs args)

 		{

 			if (args.KeyCode == Keys.F2 && Parent.CurrentNode != null && EditEnabled)

 			{

 				args.Handled = true;

 				BeginEdit();

 			}

 		}

 		protected override Control CreateEditor(TreeNodeAdv node)

 		{

 			TextBox textBox = CreateTextBox();

 			textBox.TextAlign = TextAlign;

 			textBox.Text = GetLabel(node);

 			textBox.BorderStyle = BorderStyle.FixedSingle;

 			textBox.TextChanged += EditorTextChanged;

 			textBox.KeyDown += EditorKeyDown;

 			_label = textBox.Text;

 			SetEditControlProperties(textBox, node);

 			return textBox;

 		}

 		protected virtual TextBox CreateTextBox()

 		{

 			return new TextBox();

 		}

 		protected override void DisposeEditor(Control editor)

 		{

 			var textBox = editor as TextBox;

 			textBox.TextChanged -= EditorTextChanged;

 			textBox.KeyDown -= EditorKeyDown;

 		}

 		private void EditorKeyDown(object sender, KeyEventArgs e)

 		{

 			if (e.KeyCode == Keys.Escape)

 				EndEdit(false);

 			else if (e.KeyCode == Keys.Enter)

 				EndEdit(true);

 		}

 		private string _label;

 		private void EditorTextChanged(object sender, EventArgs e)

 		{

 			var textBox = sender as TextBox;

 			_label = textBox.Text;

 			Parent.UpdateEditorBounds();

 		}

 		protected override void DoApplyChanges(TreeNodeAdv node, Control editor)

 		{

 			var label = (editor as TextBox).Text;

 			string oldLabel = GetLabel(node);

 			if (oldLabel != label)

 			{

 				SetLabel(node, label);

 				OnLabelChanged(node.Tag, oldLabel, label);

 			}

 		}

 		public override void Cut(Control control)

 		{

 			(control as TextBox).Cut();

 		}

 		public override void Copy(Control control)

 		{

 			(control as TextBox).Copy();

 		}

 		public override void Paste(Control control)

 		{

 			(control as TextBox).Paste();

 		}

 		public override void Delete(Control control)

 		{

 			var textBox = control as TextBox;

 			int len = Math.Max(textBox.SelectionLength, 1);

 			if (textBox.SelectionStart < textBox.Text.Length)

 			{

 				int start = textBox.SelectionStart;

 				textBox.Text = textBox.Text.Remove(textBox.SelectionStart, len);

 				textBox.SelectionStart = start;

 			}

 		}

 		public event EventHandler<LabelEventArgs> LabelChanged;

 		protected void OnLabelChanged(object subject, string oldLabel, string newLabel)

 		{

 			if (LabelChanged != null)

 				LabelChanged(this, new LabelEventArgs(subject, oldLabel, newLabel));

 		}

 	}

 }