OpenHardwareMonitor: External/Aga.Controls/Tree/NodeControls/NodeTextBox.cs@f652ab1e06e2

     1 using System;

     2 using System.Collections.Generic;

     3 using System.Text;

     4 using System.Drawing;

     5 using System.Windows.Forms;

     6 using System.Reflection;

     7 using System.ComponentModel;

     9 namespace Aga.Controls.Tree.NodeControls

    10 {

    11 	public class NodeTextBox : BaseTextControl

    12 	{

    13 		private const int MinTextBoxWidth = 30;

    15 		public NodeTextBox()

    16 		{

    17 		}

    19 		protected override Size CalculateEditorSize(EditorContext context)

    20 		{

    21 			if (Parent.UseColumns)

    22 				return context.Bounds.Size;

    23 			else

    24 			{

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

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

    27 				return new Size(width, size.Height);

    28 			}

    29 		}

    31 		public override void KeyDown(KeyEventArgs args)

    32 		{

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

    34 			{

    35 				args.Handled = true;

    36 				BeginEdit();

    37 			}

    38 		}

    40 		protected override Control CreateEditor(TreeNodeAdv node)

    41 		{

    42 			TextBox textBox = CreateTextBox();

    43 			textBox.TextAlign = TextAlign;

    44 			textBox.Text = GetLabel(node);

    45 			textBox.BorderStyle = BorderStyle.FixedSingle;

    46 			textBox.TextChanged += EditorTextChanged;

    47 			textBox.KeyDown += EditorKeyDown;

    48 			_label = textBox.Text;

    49 			SetEditControlProperties(textBox, node);

    50 			return textBox;

    51 		}

    53 		protected virtual TextBox CreateTextBox()

    54 		{

    55 			return new TextBox();

    56 		}

    58 		protected override void DisposeEditor(Control editor)

    59 		{

    60 			var textBox = editor as TextBox;

    61 			textBox.TextChanged -= EditorTextChanged;

    62 			textBox.KeyDown -= EditorKeyDown;

    63 		}

    65 		private void EditorKeyDown(object sender, KeyEventArgs e)

    66 		{

    67 			if (e.KeyCode == Keys.Escape)

    68 				EndEdit(false);

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

    70 				EndEdit(true);

    71 		}

    73 		private string _label;

    74 		private void EditorTextChanged(object sender, EventArgs e)

    75 		{

    76 			var textBox = sender as TextBox;

    77 			_label = textBox.Text;

    78 			Parent.UpdateEditorBounds();

    79 		}

    81 		protected override void DoApplyChanges(TreeNodeAdv node, Control editor)

    82 		{

    83 			var label = (editor as TextBox).Text;

    84 			string oldLabel = GetLabel(node);

    85 			if (oldLabel != label)

    86 			{

    87 				SetLabel(node, label);

    88 				OnLabelChanged(node.Tag, oldLabel, label);

    89 			}

    90 		}

    92 		public override void Cut(Control control)

    93 		{

    94 			(control as TextBox).Cut();

    95 		}

    97 		public override void Copy(Control control)

    98 		{

    99 			(control as TextBox).Copy();

   100 		}

   102 		public override void Paste(Control control)

   103 		{

   104 			(control as TextBox).Paste();

   105 		}

   107 		public override void Delete(Control control)

   108 		{

   109 			var textBox = control as TextBox;

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

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

   112 			{

   113 				int start = textBox.SelectionStart;

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

   115 				textBox.SelectionStart = start;

   116 			}

   117 		}

   119 		public event EventHandler<LabelEventArgs> LabelChanged;

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

   121 		{

   122 			if (LabelChanged != null)

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

   124 		}

   125 	}

   126 }

author	moel.mich
	Sun, 27 May 2012 16:08:54 +0000
changeset 346	f652ab1e06e2
permissions	-rw-r--r--