Example #1
0
 public synchronized void unregisterListener(EventListener listener) {
   Iterator<EventSender> i = eventSenders.iterator();
   while (i.hasNext()) {
     EventSender sender = i.next();
     sender.unregisterListener(listener);
     if (sender.getListeners().isEmpty()) i.remove();
   }
 }
Example #2
0
 public synchronized void registerListener(EventListener listener) {
   Class<? extends EventListener> listenerClass = listener.getClass();
   for (Method method : listenerClass.getMethods()) {
     if (!method.isAnnotationPresent(EventHandler.class)) continue;
     if (method.getParameterTypes().length != 1)
       throw new IllegalArgumentException(
           "Method "
               + method.toString()
               + " in class "
               + method.getDeclaringClass().getName()
               + " has incorrect amount of parameters");
     Class<? extends Event> eventClass = method.getParameterTypes()[0].asSubclass(Event.class);
     boolean senderExists = false;
     for (EventSender sender : eventSenders) {
       if (eventClass.isAssignableFrom(sender.getListenerEventClass()))
         sender.addHandler(listener, method);
       if (eventClass == sender.getListenerEventClass()) senderExists = true;
     }
     if (!senderExists) {
       EventSender sender = new EventSender(eventClass);
       eventSenders.add(sender);
       sender.addHandler(listener, method);
     }
   }
 }
Example #3
0
 public synchronized List<EventListener> getListeners(Class<? extends Event> eventClass) {
   for (EventSender sender : eventSenders)
     if (eventClass.isAssignableFrom(sender.getListenerEventClass())) return sender.getListeners();
   return Collections.emptyList();
 }
Example #4
0
 public synchronized void sendEvent(Event event) {
   for (EventSender sender : new ArrayList<>(eventSenders)) {
     Class<? extends Event> eventClass = sender.getListenerEventClass();
     if (eventClass.isInstance(event)) sender.sendEvent(event);
   }
 }