using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace DesignPytternDemo
{
    public abstract class Wear
    {
       public abstract void Show();
    }


    public abstract class BaseWear : Wear
    {
        protected Wear _wear;
        protected BaseWear(Wear w)
        {
            this._wear = w;
        }
        public override void Show()
        {
            if (null != _wear)
            {
                _wear.Show();
            }
        }

    }
    public class CreateWear : Wear
    {
        public override void Show()
        {
            Console.WriteLine("base wear");
        }
    }


    public class WearCloze : BaseWear
    {


        public WearCloze(Wear w)
            : base(w)
        {


        }


        public override void Show()
        {
            this._wear.Show();
            Console.WriteLine("wear cloze");
        }
    }


    public class WearThous : BaseWear
    {


        public WearThous(Wear w)
            : base(w)
        {


        }
        public override void Show()
        {
            this._wear.Show();
            Console.WriteLine("wear thurous");
        }
    }


    public class WearShoes : BaseWear
    {


        public WearShoes(Wear w)
            : base(w)
        {


        }
        public override void Show()
        {
            this._wear.Show();
            Console.WriteLine("wear shoes");
        }
    }


    public class WearCap : BaseWear
    {


        public WearCap(Wear w)
            : base(w)
        {


        }
        public override void Show()
        {
            this._wear.Show();
            Console.WriteLine("wear cap");
        }
    }




}


 static void Main(string[] args)
        {
            Wear w = new CreateWear();
           // w.Show();


            Wear w1 = new WearCap(w);
           // w1.Show();


            Wear w2 = new WearCloze(w1);
           // w2.Show();


            Wear w3 = new WearShoes(w2);
            w3.Show();


            Console.ReadLine();
        }