class1.cs

来自DoFactory的设计模式, 由于是本人根据已有代码创建,没有NETOptimized项

// Mediator pattern -- Structural example  

using System;
using System.Collections;

namespace DoFactory.GangOfFour.Mediator.Structural
{

    // Mainapp test application 

    class MainApp
    {
        static void Main()
        {
            ConcreteMediator m = new ConcreteMediator();

            ConcreteColleague1 c1 = new ConcreteColleague1(m);
            ConcreteColleague2 c2 = new ConcreteColleague2(m);

            m.Colleague1 = c1;
            m.Colleague2 = c2;

            c1.Send("How are you?");
            c2.Send("Fine, thanks");

            // Wait for user 
            Console.Read();
        }
    }

    // "Mediator" 

    abstract class Mediator
    {
        public abstract void Send(string message,
          Colleague colleague);
    }

    // "ConcreteMediator" 

    class ConcreteMediator : Mediator
    {
        private ConcreteColleague1 colleague1;
        private ConcreteColleague2 colleague2;

        public ConcreteColleague1 Colleague1
        {
            set { colleague1 = value; }
        }

        public ConcreteColleague2 Colleague2
        {
            set { colleague2 = value; }
        }

        public override void Send(string message,
          Colleague colleague)
        {
            if (colleague == colleague1)
            {
                colleague2.Notify(message);
            }
            else
            {
                colleague1.Notify(message);
            }
        }
    }

    // "Colleague" 

    abstract class Colleague
    {
        protected Mediator mediator;

        // Constructor 
        public Colleague(Mediator mediator)
        {
            this.mediator = mediator;
        }
    }

    // "ConcreteColleague1" 

    class ConcreteColleague1 : Colleague
    {
        // Constructor 
        public ConcreteColleague1(Mediator mediator)
            : base(mediator)
        {
        }

        public void Send(string message)
        {
            mediator.Send(message, this);
        }

        public void Notify(string message)
        {
            Console.WriteLine("Colleague1 gets message: "
              + message);
        }
    }

    // "ConcreteColleague2" 

    class ConcreteColleague2 : Colleague
    {
        // Constructor 
        public ConcreteColleague2(Mediator mediator)
            : base(mediator)
        {
        }

        public void Send(string message)
        {
            mediator.Send(message, this);
        }

        public void Notify(string message)
        {
            Console.WriteLine("Colleague2 gets message: "
              + message);
        }
    }
}