private void createBtn_clicked(object sender, RoutedEventArgs e)
        {
            Elements.Clear();
            AbstractFactory factory;

            if (rectRadioButton.IsChecked == true)
            {
                factory = new RectangleFactory();
            }
            else
            {
                factory = new SquareFactory();
            }

            for (int i = 0; i < countSlider.Value; ++i)
            {
                UIElement element;
                if (redRadioButton.IsChecked == true)
                {
                    element = factory.CreateRed();
                }
                else
                {
                    element = factory.CreateBlue();
                }
                Elements.Add(element);
            }
            Close();
        }
 public RectFactoryDecorator(RectangleFactory factory)
 {
     m_factory = factory;
 }