/usr/share/php/Zend/EventManager/EventManagerAwareTrait.php is in php-zend-eventmanager 2.3.3-1.
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/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\EventManager;
use Traversable;
/**
* 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 ZF2 MVC application will automatically inject an instance of the
* EventManager into your object when it is pulled from the ServiceManager.
*
* @see Zend\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.
*
* @param EventManagerInterface $events
* @return mixed
*/
public function setEventManager(EventManagerInterface $events)
{
$identifiers = array(__CLASS__, get_class($this));
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();
}
return $this;
}
/**
* Retrieve the event manager
*
* Lazy-loads an EventManager instance if none registered.
*
* @return EventManagerInterface
*/
public function getEventManager()
{
if (!$this->events instanceof EventManagerInterface) {
$this->setEventManager(new EventManager());
}
return $this->events;
}
}
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