mediatorstructural.cs

来自「使用C#程序将23个常用设计模式进行列表显示」· CS 代码 · 共 109 行

using System;
using System.Windows.Forms;
using System.Collections;

namespace DesignPattern.MediatorStructural
{
    class MediatorStructural : AbstractPattern
    {
        public static void Run(TextBox tbInfo)
        {
            s_tbInfo = tbInfo;
            s_tbInfo.Text = "";

            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)
        {
            DesignPattern.FormMain.OutputInfo("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)
        {
            DesignPattern.FormMain.OutputInfo("Colleague2 gets message: " + message);
        }
    }
}