装饰模式学习

    哈哈，今天重新看了一下设计模式中的装饰模式。发现每次看想的不一样，哈哈。

    先传个图

代码随便写一个吧，超人的。突然觉得装饰模式不仅能有装饰作用，还有装饰的前后顺序。比如，超人的经典造型。内裤外穿。

我打算装饰出四种超人造型，只穿内裤，只穿外裤，内裤外穿，内裤内穿

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace DecoratorNameSpace
{
    public abstract class Man
    {
        public abstract void Wear();
    }
 
    /// <summary>
    /// 裸体超人
    /// </summary>
    public class SuperMan : Man
    {
        public override void Wear()
        {
            Console.WriteLine("裸体超人");
        }
    }
 
    public abstract class Decorator : Man
    {
        public Man man;
 
        public void SetComponent(Man man)
        {
            this.man = man;
        }
 
        public override void Wear()
        {
            man.Wear();
        }
    }
 
 
    public class Decorator_穿外裤 : Decorator
    {
        public override void Wear()
        {
            base.Wear();
            Console.WriteLine("超人穿上了外裤");
        }
    }
 
    public class Decorator_穿内裤 : Decorator
    {
        public override void Wear()
        {
            base.Wear();
            Console.WriteLine("超人穿上了内裤");
        }
    }
 
    class Program
    {
        static void Main(string[] args)
        {
            //第一种情况：超人只穿内裤
            SuperMan c1 = new SuperMan();
            Decorator_穿内裤 db1 = new Decorator_穿内裤();
            db1.SetComponent(c1);
            db1.Wear();
            Console.WriteLine("超人现在只穿了内裤");
            Console.WriteLine("============================\n");
 
            //第二种情况：超人只穿外裤
            SuperMan c2 = new SuperMan();
            Decorator_穿外裤 da2 = new Decorator_穿外裤();
            da2.SetComponent(c2);
            da2.Wear();
            Console.WriteLine("超人现在只穿了外裤");
            Console.WriteLine("============================\n");
 
            //第三种情况：内裤穿在里面
            SuperMan c3 = new SuperMan();
            Decorator_穿内裤 db3 = new Decorator_穿内裤();
            Decorator_穿外裤 da3 = new Decorator_穿外裤();
            db3.SetComponent(c3);
            da3.SetComponent(db3);
            da3.Wear();
            Console.WriteLine("超人现在内裤穿在了里面，外面穿了条裤子");
            Console.WriteLine("============================\n");
 
            //第四种情况：内裤穿在里面
            SuperMan c4 = new SuperMan();
            Decorator_穿外裤 da4 = new Decorator_穿外裤();
            Decorator_穿内裤 db4 = new Decorator_穿内裤();
            da4.SetComponent(c4);
            db4.SetComponent(da4);
            db4.Wear();
            Console.WriteLine("超人经典造型，内裤外穿");
            Console.WriteLine("============================\n");
        }
    }
}

据说，.NET Framework和Java中流就是用的装饰模式。这个还没仔细看过，不过，他们好像都没有装饰的那个接口类了。有时间再研究了