| 结构 | |
| 意图 | 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地相互引用，从而使其耦合松散，而且可以独立地改变它们之间的交互。 |
| 适用性 |
|
using System;
class Mediator
{
private DataProviderColleague dataProvider;
private DataConsumerColleague dataConsumer;
public void IntroduceColleagues(DataProviderColleague c1, DataConsumerColleague c2)
{
dataProvider = c1;
dataConsumer = c2;
}
public void DataChanged()
{
int i = dataProvider.MyData;
dataConsumer.NewValue(i);
}
}
class DataConsumerColleague
{
public void NewValue(int i)
{
Console.WriteLine("New value {0}", i);
}
}
class DataProviderColleague
{
private Mediator mediator;
private int iMyData=;
public int MyData
{
get
{
return iMyData;
}
set
{
iMyData = value;
}
}
public DataProviderColleague(Mediator m)
{
mediator = m;
}
public void ChangeData()
{
iMyData = ;
// Inform mediator that I have changed the data
if (mediator != null)
mediator.DataChanged();
}
}
/// <summary>
/// Summary description for Client.
/// </summary>
public class Client
{
public static int Main(string[] args)
{
Mediator m = new Mediator();
DataProviderColleague c1 = new DataProviderColleague(m);
DataConsumerColleague c2 = new DataConsumerColleague();
m.IntroduceColleagues(c1,c2);
c1.ChangeData();
return ;
}
}
中介者模式