using System;

​

public class Image

{

}

​

public interface IFilter

{

    void Apply(Image image);    

}

​

public class VividFilter: IFilter

{

    public void Apply(Image image)

    {

        Console.WriteLine("Vivid Filter");

    }

}

​

//Third Party Class

public class Caramel 

{

    public void Init()

    {

    }

    public void Render(Image image)

    {

    }

}

​

public class CaramelFilter: IFilter

{

    private Caramel caramel;

    public CaramelFilter(Caramel caramel)

    {

        this.caramel = caramel;

    }

    public void Apply(Image image)

    {

        caramel.Init();

        caramel.Render(image);

        Console.WriteLine("Caramel Filter");

    }

}

public class ImageView

{

    private Image image;

    public ImageView(Image image)

    {

        this.image = image;

    }

    public void Apply(IFilter filter)

    {

        filter.Apply(image);

    }

}

​

public class Program

{

    public static void Main()

    {

        var imageView = new ImageView(new Image());

        imageView.Apply(new VividFilter());

        imageView.Apply(new CaramelFilter(new Caramel()));

    }

}