Your IP : 216.73.216.43
<?php
namespace Laminas\EventManager;
use Traversable;
use function array_merge;
use function array_unique;
use function is_array;
use function is_object;
use function is_string;
use function method_exists;
/**
* A trait for objects that provide events.
*
* If you use this trait in an object, you will probably want to also implement
* EventManagerAwareInterface, which will make it so the default initializer in
* a Laminas MVC application will automatically inject an instance of the
* EventManager into your object when it is pulled from the ServiceManager.
*
* @see Laminas\Mvc\Service\ServiceManagerConfig
*/
trait EventManagerAwareTrait
{
/** @var EventManagerInterface */
protected $events;
/**
* Set the event manager instance used by this context.
*
* For convenience, this method will also set the class name / LSB name as
* identifiers, in addition to any string or array of strings set to the
* $this->eventIdentifier property.
*/
public function setEventManager(EventManagerInterface $events)
{
$identifiers = [self::class, static::class];
if (isset($this->eventIdentifier)) {
if (
(is_string($this->eventIdentifier))
|| (is_array($this->eventIdentifier))
|| $this->eventIdentifier instanceof Traversable
) {
$identifiers = array_unique(array_merge($identifiers, (array) $this->eventIdentifier));
} elseif (is_object($this->eventIdentifier)) {
$identifiers[] = $this->eventIdentifier;
}
// silently ignore invalid eventIdentifier types
}
$events->setIdentifiers($identifiers);
$this->events = $events;
if (method_exists($this, 'attachDefaultListeners')) {
$this->attachDefaultListeners();
}
}
/**
* Retrieve the event manager
*
* Lazy-loads an EventManager instance if none registered.
*
* @return EventManagerInterface
*/
public function getEventManager()
{
if (! $this->events instanceof EventManagerInterface) {
$this->setEventManager(new EventManager());
}
return $this->events;
}
}