Colleague.java 中含有中介者的抽象类
package com.godv.mediator;
//抽象的同事类 最终中介的就是其实现类的功能
public abstract class Colleague {
private Mediator mediator;
public String name;
//强制子类构造器中包含Mediator 中介者的抽象类
public Colleague(Mediator mediator, String name) {
this.mediator = mediator;
this.name = name;
}
public Mediator GetMediator() {
return this.mediator;
}
//发送消息的抽象方法
public abstract void SendMessage(int stateChange);
}
TV.java / CoffeeMachine.java / Alarm.java / CoffeeMachine.java
package com.godv.mediator;
//具体的同事类
public class Alarm extends Colleague {
//构造器
public Alarm(Mediator mediator, String name) {
super(mediator, name);
// TODO Auto-generated constructor stub
//在创建Alarm 同事对象时,将自己放入到ConcreteMediator 对象中[集合]
mediator.Register(name, this);
}
public void SendAlarm(int stateChange) {
SendMessage(stateChange);
}
@Override
public void SendMessage(int stateChange) {
// TODO Auto-generated method stub
//调用的中介者对象的getMessage
this.GetMediator().GetMessage(stateChange, this.name);
}
}
Mediator.java 中介类的抽象类
package com.godv.mediator;
//抽象中介类
public abstract class Mediator {
//将给中介者对象,加入到集合中
public abstract void Register(String colleagueName, Colleague colleague);
//接收消息, 具体的同事对象发出
public abstract void GetMessage(int stateChange, String colleagueName);
public abstract void SendMessage();
}
ConcreteMediator.java 中介类的具体实现类 在这个类中完成对各个同事对象的协调调用
package com.godv.mediator;
import java.util.HashMap;
//具体的中介者类
public class ConcreteMediator extends Mediator {
//集合,放入所有的同事对象
private HashMap<String, Colleague> colleagueMap;
private HashMap<String, String> interMap;
public ConcreteMediator() {
colleagueMap = new HashMap<String, Colleague>();
interMap = new HashMap<String, String>();
}
@Override
public void Register(String colleagueName, Colleague colleague) {
// TODO Auto-generated method stub
colleagueMap.put(colleagueName, colleague);
// TODO Auto-generated method stub
if (colleague instanceof Alarm) {
interMap.put("Alarm", colleagueName);
} else if (colleague instanceof CoffeeMachine) {
interMap.put("CoffeeMachine", colleagueName);
} else if (colleague instanceof TV) {
interMap.put("TV", colleagueName);
} else if (colleague instanceof Curtains) {
interMap.put("Curtains", colleagueName);
}
}
//具体中介者的核心方法
//1. 根据得到消息,完成对应任务
//2. 中介者在这个方法,协调各个具体的同事对象,完成任务
@Override
public void GetMessage(int stateChange, String colleagueName) {
// TODO Auto-generated method stub
//处理闹钟发出的消息
if (colleagueMap.get(colleagueName) instanceof Alarm) {
if (stateChange == 0) {
((CoffeeMachine) (colleagueMap.get(interMap
.get("CoffeeMacahine")))).StartCoffee();
((TV) (colleagueMap.get(interMap.get("TV")))).StartTv();
} else if (stateChange == 1) {
((TV) (colleagueMap.get(interMap.get("TV")))).StopTv();
}
} else if (colleagueMap.get(colleagueName) instanceof CoffeeMachine) {
((Curtains) (colleagueMap.get(interMap.get("Curtains"))))
.UpCurtains();
} else if (colleagueMap.get(colleagueName) instanceof TV) {//如果TV发现消息
} else if (colleagueMap.get(colleagueName) instanceof Curtains) {
//如果是以窗帘发出的消息,这里处理...
}
}
@Override
public void SendMessage() {
// TODO Auto-generated method stub
}
}
ClientTest.java
package com.godv.mediator;
public class ClientTest {
public static void main(String[] args) {
//创建一个中介者对象
Mediator mediator = new ConcreteMediator();
//创建Alarm 并且加入到 ConcreteMediator 对象的HashMap
Alarm alarm = new Alarm(mediator, "alarm");
//创建了CoffeeMachine 对象,并 且加入到 ConcreteMediator 对象的HashMap
CoffeeMachine coffeeMachine = new CoffeeMachine(mediator,"coffeeMachine");
//创建 Curtains , 并 且加入到 ConcreteMediator 对象的HashMap
Curtains curtains = new Curtains(mediator, "curtains");
TV tV = new TV(mediator, "TV");
//让闹钟发出消息
alarm.SendAlarm(0);
coffeeMachine.FinishCoffee();
alarm.SendAlarm(1);
}
}