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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace Tango.Console
{
public class ConsoleTextBox : TextBox
{
private Border _caret;
static ConsoleTextBox()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(ConsoleTextBox), new FrameworkPropertyMetadata(typeof(ConsoleTextBox)));
}
public Brush CaretBottomBrush
{
get { return (Brush)GetValue(CaretBottomBrushProperty); }
set { SetValue(CaretBottomBrushProperty, value); }
}
public static readonly DependencyProperty CaretBottomBrushProperty =
DependencyProperty.Register("CaretBottomBrush", typeof(Brush), typeof(ConsoleTextBox), new PropertyMetadata(null));
public ConsoleTextBox()
{
SelectionChanged += (sender, e) => MoveCustomCaret();
LostFocus += (sender, e) => _caret.Visibility = Visibility.Collapsed;
GotKeyboardFocus += (sender, e) => _caret.Visibility = Visibility.Visible;
LostKeyboardFocus += (sender, e) => _caret.Visibility = Visibility.Collapsed;
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_caret = GetTemplateChild("PART_Caret") as Border;
}
private void MoveCustomCaret()
{
var caretLocation = GetRectFromCharacterIndex(CaretIndex).Location;
if (!double.IsInfinity(caretLocation.X))
{
Canvas.SetLeft(_caret, caretLocation.X);
}
}
}
}
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