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  • 设计模式学习笔记——中介者模式(Mediator)

    1.特点:由中介封装一系列对象交互,减少对象间耦合,利于复用。(朋友多)

    2.概念:定义一个中介对象来封装系列对象之间的交互。

    3.类图:

    4.程序实现:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    
    namespace Mediator
    {
        class Program
        {
            static void Main(string[] args)
            {
                ConcreteMediator m = new ConcreteMediator();
                ConcreteColleague1 c1 = new ConcreteColleague1(m);
                ConcreteColleague2 c2 = new ConcreteColleague2(m);
                m.Colleague1 = c1;
                m.Colleague2 = c2;
    
                c1.Send("你吃过了么");
                c2.Send("没有呢,你请客?");
    
                Console.Read();
            }
        }
        abstract class Mediator
        {
            public abstract void Send(string message, Colleague colleague);
        }
        //抽象同事类
        abstract class Colleague
        {
            protected Mediator mediator;
            public Colleague(Mediator mediator)
            {
                this.mediator = mediator;
            }
        }
    
        class ConcreteMediator : Mediator
        {
            private ConcreteColleague1 colleague1;
            private ConcreteColleague2 colleague2;
    
            public ConcreteColleague1 Colleague1
            {
                set { this.colleague1 = value; }
            }
    
            public ConcreteColleague2 Colleague2
            {
                set { this.colleague2 = value; }
            }
    
            public override void Send(string message, Colleague colleague)
            {
                if (colleague == colleague1)
                {
                    colleague2.Notify(message);
                }
                else
                {
                    colleague1.Notify(message);
                }
            }
        }
    
        class ConcreteColleague1 : Colleague
        {
            public ConcreteColleague1(Mediator mediator)
                : base(mediator)
            {
    
            }
    
            public void Send(string message)
            {
                mediator.Send(message, this);
            }
            public void Notify(string message)
            {
                Console.WriteLine("同事1得到消息:" + message);
            }
        }
    
        class ConcreteColleague2 : Colleague
        {
            public ConcreteColleague2(Mediator mediator)
                : base(mediator)
            {
    
            }
    
            public void Send(string message)
            {
                mediator.Send(message, this);
            }
            public void Notify(string message)
            {
                Console.WriteLine("同事2得到消息:" + message);
            }
        }
    }
    

      

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  • 原文地址:https://www.cnblogs.com/ice-baili/p/4710392.html
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