mq5.0-source.main.bridge.bridge-jms.src.main.java.com.sun.messaging.bridge.service.jms.EventNotifier Maven / Gradle / Ivy
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package com.sun.messaging.bridge.service.jms;
import java.util.List;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.Iterator;
/**
*
* @author amyk
*
*/
public class EventNotifier {
private EnumMap> _listeners =
new EnumMap>(EventListener.EventType.class);
public EventNotifier() {}
public void addEventListener(EventListener.EventType evt, EventListener l) {
synchronized(_listeners) {
ArrayList ls = _listeners.get(evt);
if (ls == null) {
ls = new ArrayList();
_listeners.put(evt, ls);
}
ls.add(l);
}
}
public void removeEventListener(EventListener l) {
synchronized(_listeners) {
Iterator itr = _listeners.keySet().iterator();
while (itr.hasNext()) {
EventListener.EventType key = itr.next();
ArrayList ls = _listeners.get(key);
ls.remove(l);
if (ls.size() == 0) itr.remove();
}
}
}
public void notifyEvent(EventListener.EventType evt, Object source) {
EventListener[] als = null;
synchronized(_listeners) {
ArrayList ls = _listeners.get(evt);
if (ls != null) {
als = ls.toArray(new EventListener[]{});
}
}
if (als == null) return;
for (int i = 0; i < als.length; i++) {
als[i].onEvent(evt, source);
}
}
}