$eventName preferably the fully-qualified class name of the Event sub class * @param callable $listener the object that is invoked when a matching event is dispatched * @psalm-param callable(T):void $listener * @param int $priority The higher this value, the earlier an event * listener will be triggered in the chain (defaults to 0) * * @since 17.0.0 */ public function addListener(string $eventName, callable $listener, int $priority = 0): void; /** * @template T of \OCP\EventDispatcher\Event * @param string $eventName preferably the fully-qualified class name of the Event sub class * @psalm-param string|class-string $eventName preferably the fully-qualified class name of the Event sub class * @param callable $listener the object that is invoked when a matching event is dispatched * @psalm-param callable(T):void $listener * * @since 19.0.0 */ public function removeListener(string $eventName, callable $listener): void; /** * @template T of \OCP\EventDispatcher\Event * @param string $eventName preferably the fully-qualified class name of the Event sub class to listen for * @psalm-param string|class-string $eventName preferably the fully-qualified class name of the Event sub class to listen for * @param string $className fully qualified class name (or ::class notation) of a \OCP\EventDispatcher\IEventListener that can be built by the DI container * @psalm-param class-string<\OCP\EventDispatcher\IEventListener> $className fully qualified class name that can be built by the DI container * @param int $priority The higher this value, the earlier an event * listener will be triggered in the chain (defaults to 0) * * @since 17.0.0 */ public function addServiceListener(string $eventName, string $className, int $priority = 0): void; /** * @template T of \OCP\EventDispatcher\Event * @param string $eventName preferably the fully-qualified class name of the Event sub class * * @return bool TRUE if event has registered listeners * @since 29.0.0 */ public function hasListeners(string $eventName): bool; /** * @template T of \OCP\EventDispatcher\Event * @param string $eventName * @psalm-param string|class-string $eventName * @param Event $event * @psalm-param T $event * * @since 17.0.0 * @deprecated 21.0.0 use \OCP\EventDispatcher\IEventDispatcher::dispatchTyped */ public function dispatch(string $eventName, Event $event): void; /** * Dispatch a typed event * * Only use this with subclasses of ``\OCP\EventDispatcher\Event``. * The object's class will determine the event name. * * @param Event $event * * @since 18.0.0 */ public function dispatchTyped(Event $event): void; }