/**
* Sets an event listener to be called when events occur, so they can be reported by the app as,
* for example, Google Analytics events. If not set or set to null, no events will be reported.
*
* @param eventListener The event listener.
* @throws IllegalArgumentException if the eventListener is an inner or anonymous class
*/
public static void setEventListener(EventListener eventListener) {
if (eventListener != null
&& eventListener.getClass().getEnclosingClass() != null
&& !Modifier.isStatic(eventListener.getClass().getModifiers())) {
throw new IllegalArgumentException(
"The event listener cannot be an inner or anonymous class, because it will need to be serialized. Change it to a class of its own, or make it a static inner class.");
} else {
CustomActivityOnCrash.eventListener = eventListener;
}
}
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);
}
}
}
private synchronized Cluster clusterFor(EventListener eventListener) {
Cluster cluster = clusterSelector.selectCluster(eventListener);
if (cluster == null) {
Class listenerType = eventListener.getClass();
if (eventListener instanceof EventListenerProxy) {
listenerType = ((EventListenerProxy) eventListener).getTargetType();
}
throw new EventListenerSubscriptionFailedException(
format(
"Unable to subscribe [%s] to the Event Bus. There is no suitable cluster for it. "
+ "Make sure the ClusterSelector is configured properly",
listenerType.getName()));
}
if (clusters.add(cluster)) {
terminal.onClusterCreated(cluster);
}
return cluster;
}
