using System.Windows.Data;

using System.Windows.Input;

namespace System.Windows.Controls

{

/// <summary>

/// Text box which focuses itself on load and selects all text in it.

/// </summary>

public class EditTextBox : TextBox

{

#region Private fields

private string startText;

#endregion Private fields

#region Constructor

static EditTextBox()

{

DefaultStyleKeyProperty.OverrideMetadata(typeof(EditTextBox), new FrameworkPropertyMetadata(typeof(EditTextBox)));

}

public EditTextBox()

{

Loaded += OnTreeViewEditTextBoxLoaded;

}

#endregion Constructor

#region Methods

protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)

{

base.OnGotKeyboardFocus(e);

startText = Text;

SelectAll();

}

protected override void OnKeyDown(KeyEventArgs e)

{

base.OnKeyDown(e);

if (!e.Handled)

{

Key key = e.Key;

switch (key)

{

case Key.Escape:

Text = startText;

break;

}

}

}

private void OnTreeViewEditTextBoxLoaded(object sender, RoutedEventArgs e)

{

BindingExpression be = GetBindingExpression(TextProperty);

if (be != null) be.UpdateTarget();

FocusHelper.Focus(this);

}

#endregion

}

}