com.anysoft.util.WatcherHub Maven / Gradle / Ivy
package com.anysoft.util;
import java.util.ArrayList;
import java.util.List;
/**
* WatcherHub
*
*
* 用于保存多个监听器，并分发消息到多个监听器
*
* @author duanyy
*
* @param
*
* @version 1.6.6.5 [20161121 duanyy]
* - 增加allChanged方法，以便通知Watcher所有对象已经改变
*
*/
public class WatcherHub implements Watcher {
@Override
public void added(String id, data _data) {
for (Watcher w:listeners){
if (w != null){
w.added(id, _data);
}
}
}
@Override
public void removed(String id, data _data) {
for (Watcher w:listeners){
if (w != null){
w.removed(id, _data);
}
}
}
@Override
public void changed(String id, data _data) {
for (Watcher w:listeners){
if (w != null){
w.changed(id, _data);
}
}
}
@Override
public void allChanged() {
for (Watcher w:listeners){
if (w != null){
w.allChanged();
}
}
}
/**
* 注册监听器
* @param watcher
*/
public void addWatcher(Watcher watcher){
listeners.add(watcher);
}
/**
* 注销监听器
* @param watcher
*/
public void removeWatcher(Watcher watcher){
listeners.remove(watcher);
}
protected List> listeners = new ArrayList>();
}