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<?php |
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declare(strict_types=1); |
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namespace Arp\EventDispatcher\Listener; |
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use Arp\EventDispatcher\Listener\Exception\EventListenerException; |
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use Arp\Factory\Exception\FactoryException; |
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use Arp\Factory\FactoryInterface; |
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/** |
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* @author Alex Patterson <[email protected]> |
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* @package Arp\EventDispatcher\Listener |
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*/ |
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final class LazyListenerConfig extends ListenerConfig |
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{ |
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/** |
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* @var string|callable|FactoryInterface |
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*/ |
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private $factory; |
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/** |
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* @var array |
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*/ |
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private $options; |
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/** |
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* @param FactoryInterface|string $factory |
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* @param string $eventName |
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* @param int $priority |
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* @param array $options |
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* |
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* @throws EventListenerException |
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*/ |
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public function __construct($factory, string $eventName, int $priority = 1, array $options = []) |
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{ |
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if ( |
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is_callable($factory) |
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&& !$factory instanceof FactoryInterface |
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&& !is_a($factory, FactoryInterface::class, true) |
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) { |
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throw new EventListenerException( |
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sprintf( |
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'The \'listener\' argument must be a \'string\', \'callable\' or an object of type \'%s\'; ' |
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. '\'%s\' provided in \'%s\'', |
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FactoryInterface::class, |
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is_object($factory) ? get_class($factory) : gettype($factory), |
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static::class |
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) |
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); |
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} |
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$this->factory = $factory; |
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$this->options = $options; |
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$listener = static function () { |
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}; |
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parent::__construct($listener, $eventName, $priority); |
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} |
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/** |
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* @return callable |
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* |
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* @throws EventListenerException |
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*/ |
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public function getListener(): callable |
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{ |
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$listener = new LazyListener(); |
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$listener = $this->listener; |
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$factory = $this->factory; |
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try { |
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if (is_string($factory)) { |
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$this->factory = $factory = new $factory(); |
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} |
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if ($factory instanceof FactoryInterface) { |
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$this->listener = $listener = $factory->create($this->options); |
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} |
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} catch (FactoryException $e) { |
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throw new EventListenerException( |
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sprintf( |
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'Failed to lazy load the event listener from factory class \'%s\': %s', |
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get_class($factory), |
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$e->getMessage() |
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), |
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$e->getCode(), |
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$e |
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); |
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} |
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return $listener; |
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} |
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} |
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alex-patterson-webdev /
event-dispatcher
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