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<?php
declare(strict_types=1);
namespace League\Event;
use Psr\EventDispatcher\EventDispatcherInterface;
class BufferedEventDispatcher implements EventDispatcherInterface, ListenerRegistry
{
use EventGeneratorBehavior {
recordEvent as protected;
releaseEvents as protected;
}
/**
* @var EventDispatcherInterface
*/
private $dispatcher;
public function __construct(EventDispatcherInterface $dispatcher)
{
$this->dispatcher = $dispatcher;
}
public function dispatch(object $event): object
{
$this->recordEvent($event);
return $event;
}
/**
* @return object[]
*/
public function dispatchBufferedEvents(): array
{
$events = [];
foreach ($this->releaseEvents() as $event) {
$events[] = $this->dispatcher->dispatch($event);
}
return $events;
}
public function subscribeTo(string $event, callable $listener, int $priority = ListenerPriority::NORMAL): void
{
if ( ! $this->dispatcher instanceof ListenerRegistry) {
throw UnableToSubscribeListener::becauseTheEventDispatcherDoesNotAcceptListeners($this->dispatcher);
}
$this->dispatcher->subscribeTo($event, $listener, $priority);
}
public function subscribeOnceTo(string $event, callable $listener, int $priority = ListenerPriority::NORMAL): void
{
if ( ! $this->dispatcher instanceof ListenerRegistry) {
throw UnableToSubscribeListener::becauseTheEventDispatcherDoesNotAcceptListeners($this->dispatcher);
}
$this->dispatcher->subscribeOnceTo($event, $listener, $priority);
}
public function subscribeListenersFrom(ListenerSubscriber $subscriber): void
{
if ( ! $this->dispatcher instanceof ListenerRegistry) {
throw UnableToSubscribeListener::becauseTheEventDispatcherDoesNotAcceptListeners($this->dispatcher);
}
$this->dispatcher->subscribeListenersFrom($subscriber);
}
}