[C# 디자인패턴] 제15강 미디에이터 패턴

예제코드

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace CSharp_MediatorPattern
{
    abstract class Mediator
    {
        public abstract void Send(string message, Colleague colleague);
    }
 
    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);
            }
        }
    }
 
    abstract class Colleague
    {
        protected Mediator mediator;
 
        public Colleague(Mediator mediator)
        {
            this.mediator = mediator;
        }
    }
 
    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("Colleague1 gets message: " + 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("Colleague2 gets message: " + message);
        }
    }
 
    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("How are you?");
            c2.Send("Fine, thanks");
 
            Console.ReadKey();
        }
    }
}