A detailed introduction to the code for implementing the Mediator pattern in Java

Class diagram

##

public interface IMediator {

	public void createMediator();

	public void work();
}

/**
 * 中介、调节实际上需要交互的两个元素，让其松耦合
 * @author stone
 *
 */
public class Mediator implements IMediator {
	
	private XmlCode xmlCode;
	private XmlPreview xmlPreview;
	
	@Override
	public void createMediator() {
		this.xmlCode = new XmlCode();
		this.xmlPreview = new XmlPreview();
	}

	@Override
	public void work() {
		this.xmlCode.work();
		this.xmlPreview.work();
	}

}

public interface IWork {
	void work();
}

/**
 * 本类描述Android布局里的 预览界面
 * 在预览界面中拖拽组件，代码会变化
 * @author stone
 *
 */
public class XmlPreview implements IWork {

	@Override
	public void work() {
		System.out.println("预览里的组件变化了");
	}

}

/**
 * 本类描述Android布局里的 xml代码
 * 加入了代码，预览界面会变化
 * @author stone
 *
 */
public class XmlCode implements IWork {

	@Override
	public void work() {
		System.out.println("加入布局代码");
	}


}

/*
 * 中介者(Mediator)模式 	Mediator的意思是中介者、调节者、传递物,顾名思义,这个模式在程式中必然负担一个中介、调节、传递的工作
 * 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
 */
public class Test {
	public static void main(String[] args) {
		IMediator mediator = new Mediator();
		mediator.createMediator();//内部创建元素，维护元素
		mediator.work();//执行内部元素的work接口
	}
}

Print

加入布局代码
预览里的组件变化了

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