中介者模式：用一个中介对象来封装一系列的对象交互。中介者使各对象不需要显式的相互引用，从而使得其耦合松散，而且可以独立的改变它们之间的交互。
abstract class Mediator//抽象中介者
{
public abstract void Send(string message, Colleague colleague);
}
abstract class Colleague//抽象同事类
{
protected Mediator mediator;
public Colleague(Mediator mediator)
{
this.mediator = mediator;
}
}
class ContreteMediater:Mediator//具体中介类
{
private ContreteColleague1 colleague1;
private ContreteColleague2 colleague2;
public ContreteColleague1 Colleague1
{
set { colleague1 = value; }
}
public ContreteColleague2 Colleague2
{
set { colleague2 = value; }
}
public override void Send(string message, Colleague colleague)
{
if (colleague == colleague1)
colleague2.Notify(message);
else if (colleague == colleague2)
colleague1.Notify(message);
}
}
class ContreteColleague1:Colleague、、
{
public ContreteColleague1(Mediator mediator):base(mediator)
{ }
public void Send(string message)
{
mediator.Send(message, this);
}
public void Notify(string message)
{
Console.WriteLine("colleage1 get messgae " + message);
}
}
class ContreteColleague2 : Colleague//具体同事类2
{
public ContreteColleague2(Mediator mediator) : base(mediator)
{ }
public void Send(string message)
{
mediator.Send(message, this);
}
public void Notify(string message)
{
Console.WriteLine("colleage2 get messgae " + message);
}
}
class Program
{
static void Main(string[] args)
{
ContreteMediater m = new ContreteMediater();
ContreteColleague1 c1 = new ContreteColleague1(m);
ContreteColleague2 c2 = new ContreteColleague2(m);
m.Colleague1 = c1;
m.Colleague2 = c2;
c1.Send("nice to meet you ");
c2.Send("nice to meet you too");
Console.Read();
}
}
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