行为型模式-中介者mediator

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

namespace 中介者模式
{
class Program
{
static void Main(string[] args)
{
UnitedNationsSecurityCouncil UNSC = new UnitedNationsSecurityCouncil();

USA c1 = new USA(UNSC);
Iraq c2 = new Iraq(UNSC);

UNSC.Colleague1 = c1;
UNSC.Colleague2 = c2;

c1.Declare("不准研制核武器，否则要发动战争！");
c2.Declare("我们没有核武器，也不怕侵略。");

Console.Read();
}
}

//联合国机构
abstract class UnitedNations
{
/// <summary>
/// 声明
/// </summary>
/// <param name="message">声明信息</param>
/// <param name="colleague">声明国家</param>
public abstract void Declare(string message, Country colleague);
}

//联合国安全理事会
class UnitedNationsSecurityCouncil : UnitedNations
{
private USA colleague1;
private Iraq colleague2;

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

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

public override void Declare(string message, Country colleague)
{
if (colleague == colleague1)
{
colleague2.GetMessage(message);
}
else
{
colleague1.GetMessage(message);
}
}
}

//国家
abstract class Country
{
protected UnitedNations mediator;

public Country(UnitedNations mediator)
{
this.mediator = mediator;
}
}

//美国
class USA : Country
{
public USA(UnitedNations mediator)
: base(mediator)
{

}
//声明
public void Declare(string message)
{
mediator.Declare(message, this);
}
//获得消息
public void GetMessage(string message)
{
Console.WriteLine("美国获得对方信息：" + message);
}
}

//伊拉克
class Iraq : Country
{
public Iraq(UnitedNations mediator)
: base(mediator)
{
}

//声明
public void Declare(string message)
{
mediator.Declare(message, this);
}
//获得消息
public void GetMessage(string message)
{
Console.WriteLine("伊拉克获得对方信息：" + message);
}

}
}