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<?php
/**
* @package event
*/
namespace Mleko\Event\Listener;
class OneTimeListener implements \Mleko\Event\Listener
{
/** @var \Mleko\Event\Listener */
private $wrappedListener;
/** @var bool */
private $fired = false;
* OneTimeListener constructor.
* @param \Mleko\Event\Listener $listener
public function __construct(\Mleko\Event\Listener $listener)
$this->wrappedListener = $listener;
}
public function handle($event, \Mleko\Event\Meta $meta)
if (!$this->fired) {
$this->fired = true;
$this->unsubscribe($meta);
$this->wrappedListener->handle($event, $meta);
private function unsubscribe(\Mleko\Event\Meta $meta)
$emitter = $meta->getEmitter();
if ($emitter instanceof \Mleko\Event\MutableEmitter) {
$emitter->removeListener($meta->getMatchedName(), $this);
mleko /
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