@Override
public void addViewListener(ApplicationEventListener<? extends ApplicationEvent> listener) {
if (map == null) {
map = new HashMap<Class<? extends ApplicationEvent>, Set<ApplicationEventListener<?>>>();
}
Set<ApplicationEventListener<?>> listenerSet = map.get(listener.getEventType());
if (listenerSet == null) {
listenerSet = new LinkedHashSet<ApplicationEventListener<?>>();
map.put(listener.getEventType(), listenerSet);
}
listenerSet.add(listener);
}
protected void fireEvent(ApplicationEvent event) {
log.debug("Fire event: {}", event);
Class<? extends ApplicationEvent> eventType = event.getClass();
Set<ApplicationEventListener<?>> eventSet = map.get(eventType);
if (eventSet != null) {
Iterator<ApplicationEventListener<?>> listenerSet = map.get(eventType).iterator();
while (listenerSet.hasNext()) {
ApplicationEventListener<?> listener = listenerSet.next();
@SuppressWarnings("unchecked")
ApplicationEventListener<ApplicationEvent> l =
(ApplicationEventListener<ApplicationEvent>) listener;
l.handle(event);
}
} else {
log.error("No listener is registered for event type " + eventType);
}
}