private async void ScriptTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.Key)
            {
            case Key.Enter:
                e.Handled = true;

                HistoryText.Document.Blocks.Add(new Paragraph(new Run($"> {ScriptTextBox.Text}")));

                _scriptsHistory.Add(ScriptTextBox.Text);
                _historyIndex = _scriptsHistory.Count;

                await _scriptHandler.ExecuteCode(ScriptTextBox.Text);

                ScriptTextBox.Text = string.Empty;
                ScriptTextBox.Focus();

                break;

            case Key.Up:
                _historyIndex = Math.Max(0, _historyIndex - 1);
                if (_scriptsHistory.Count > _historyIndex)
                {
                    ScriptTextBox.Text       = _scriptsHistory[_historyIndex];
                    ScriptTextBox.CaretIndex = ScriptTextBox.Text.Length;
                }

                e.Handled = true;
                break;

            case Key.Down:
                _historyIndex = Math.Min(_scriptsHistory.Count, _historyIndex + 1);
                if (_scriptsHistory.Count > _historyIndex)
                {
                    ScriptTextBox.Text       = _scriptsHistory[_historyIndex];
                    ScriptTextBox.CaretIndex = ScriptTextBox.Text.Length;
                }
                else
                {
                    ScriptTextBox.Text = string.Empty;
                }

                e.Handled = true;
                break;
            }
        }
 private void Window_Loaded(object sender, RoutedEventArgs e)
 {
     ScriptTextBox.Focus();
 }