Symfony API
Namespace

Symfony\Component\EventDispatcher

ContainerAwareEventDispatcher Lazily loads listeners and subscribers from the dependency injection container
Event Event is the base class for classes containing event data.
EventDispatcher The EventDispatcherInterface is the central point of Symfony's event listener system.
GenericEvent Event encapsulation class.
ImmutableEventDispatcher A read-only proxy for an event dispatcher.

Interfaces

EventDispatcherInterface The EventDispatcherInterface is the central point of Symfony's event listener system.
EventSubscriberInterface An EventSubscriber knows himself what events he is interested in.