大话设计模式之装饰模式

最新推荐文章于 2024-09-25 16:13:27 发布

转载最新推荐文章于 2024-09-25 16:13:27 发布 · 679 阅读

敲了下代码，不是很理解

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            ConcreteComponenth c = new ConcreteComponenth();
            ConcreteDecoratorA ca = new ConcreteDecoratorA();
            ConcreteDecoratorB cb = new ConcreteDecoratorB();
            ca.SetComponent(c);
            cb.SetComponent(ca);
            cb.Operation();
            Console.ReadLine();
        }
    }
    public abstract class Componenth{
        public abstract void Operation();
    }
    public class ConcreteComponenth:Componenth{
        public override void Operation()
        {
            Console.WriteLine("Concrete Operatiion");
        }
    }
    public abstract class Decorator:Componenth
    {
        protected Componenth component;
        public void SetComponent(Componenth _com)
        {
            this.component = _com;
        }
        public override void Operation()
        {
            if (component!=null)
            {
                component.Operation();
            }
            //throw new NotImplementedException();
        }
    }
    public class ConcreteDecoratorA:Decorator{
        private string addedState;
        public override void Operation()
        {
            base.Operation();
            addedState = "new state";
            Console.WriteLine("具体装饰对象A操作！");
        }
    }
    public class ConcreteDecoratorB:Decorator{
        public override void Operation()
        {
            base.Operation();
            AddedBehavior();
            Console.WriteLine("B operation");
        }

        void AddedBehavior()
        {

        }
    }
}