jsanjuan2016

public interface IShape<T> where T : class {}

jsanjuan2016

public class Rectangle : IShape<Rectangle>
{
    public Rectangle() { }
}

jsanjuan2016

services.AddTransient<IShape<Rectangle>, Rectangle>();
services.AddTransient<IShape<Circle>, Circle>();

jsanjuan2016

private readonly IShape<Rectangle> _rectangle;
private readonly IShape<Circle> _circle;

public WindowManager(IShape<Rectangle> rectangle, IShape<Circle> circle)
{
    this._rectangle = rectangle ?? throw new ArgumentNullException(nameof(rectangle));
    this._circle = circle ?? throw new ArgumentNullException(nameof(circle));
}

jsanjuan2016

public interface IShapeFactory<T> where T : IShape
{
    IShape CreateShape();
}

jsanjuan2016

public class WindowManager
{
    private readonly IShapeFactory<Rectangle> _rectangleFactory;
    private readonly IShapeFactory<Cirlce> _CircleFactory;

    public WindowManager(IShapeFactory<Rectangle> rectangleFactory, IShapeFactory<Cirlce> CirlceFactory)
    {
        this._rectangleFactory = rectangleFactory ?? throw new ArgumentNullException(nameof(rectangleFactory));
        this._CircleFactory = CirlceFactory ?? throw new ArgumentNullException(nameof(CirlceFactory));
    }

jsanjuan2016

public interface IShapeParameters { }

jsanjuan2016

services.AddTransient<IShape, Rectangle>();
services.AddTransient<IShape, Circle>();

jsanjuan2016

private readonly IShape _rectangle;
private readonly IShape _circle;

public WindowManager(IShape rectangle, IShape circle)
{
    this._rectangle = rectangle ?? throw new ArgumentNullException(nameof(rectangle));
    this._circle = cirlce ?? throw new ArgumentNullException(nameof(circle));
}

jsanjuan2016

public class RectangleParameters : IShapeParameters
{
    public double width { get; set; }
    public double height { get; set; }
}