/
EventDispatcherTrait.php
82 lines (75 loc) · 2.41 KB
/
EventDispatcherTrait.php
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<?php
/**
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since 3.0.10
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Event;
/**
* Implements EventDispatcherInterface.
*
*/
trait EventDispatcherTrait
{
/**
* Instance of the Cake\Event\EventManager this object is using
* to dispatch inner events.
*
* @var \Cake\Event\EventManager
*/
protected $_eventManager = null;
/**
* Default class name for new event objects.
*
* @var string
*/
protected $_eventClass = '\Cake\Event\Event';
/**
* Returns the Cake\Event\EventManager manager instance for this object.
*
* You can use this instance to register any new listeners or callbacks to the
* object events, or create your own events and trigger them at will.
*
* @param \Cake\Event\EventManager|null $eventManager the eventManager to set
* @return \Cake\Event\EventManager
*/
public function eventManager(EventManager $eventManager = null)
{
if ($eventManager !== null) {
$this->_eventManager = $eventManager;
} elseif (empty($this->_eventManager)) {
$this->_eventManager = new EventManager();
}
return $this->_eventManager;
}
/**
* Wrapper for creating and dispatching events.
*
* Returns a dispatched event.
*
* @param string $name Name of the event.
* @param array|null $data Any value you wish to be transported with this event to
* it can be read by listeners.
* @param object|null $subject The object that this event applies to
* ($this by default).
*
* @return \Cake\Event\Event
*/
public function dispatchEvent($name, $data = null, $subject = null)
{
if ($subject === null) {
$subject = $this;
}
$event = new $this->_eventClass($name, $subject, $data);
$this->eventManager()->dispatch($event);
return $event;
}
}