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<?php |
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/** |
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* Phossa Project |
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* |
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* PHP version 5.4 |
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* |
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* @category Library |
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* @package Phossa2\Event |
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* @copyright Copyright (c) 2016 phossa.com |
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* @license http://mit-license.org/ MIT License |
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* @link http://www.phossa.com/ |
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*/ |
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/*# declare(strict_types=1); */ |
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namespace Phossa2\Event\Traits; |
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use Phossa2\Event\Event; |
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use Phossa2\Event\EventDispatcher; |
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use Phossa2\Event\Interfaces\ListenerInterface; |
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use Phossa2\Event\Interfaces\EventManagerInterface; |
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use Phossa2\Event\Interfaces\ListenerAwareInterface; |
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/** |
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* Implementation of EventCapableInterface |
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* |
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* @package Phossa2\Event |
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* @author Hong Zhang <[email protected]> |
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* @see EventCapableInterface |
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* @version 2.1.5 |
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* @since 2.0.0 added |
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* @since 2.1.1 updated |
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* @since 2.1.5 added attachSelfToEventManager() |
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*/ |
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trait EventCapableTrait |
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{ |
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use EventPrototypeTrait; |
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/** |
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* event manager or dispatcher |
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* |
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* @var EventManagerInterface |
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* @access protected |
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*/ |
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protected $event_manager; |
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/** |
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* flag for attachListener |
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* |
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* @var bool |
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* @access protected |
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* @since 2.1.5 |
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*/ |
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protected $listener_attached = false; |
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/** |
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* {@inheritDoc} |
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* |
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* @since 2.1.5 moved attachListener to getEventManager |
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*/ |
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public function setEventManager( |
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EventManagerInterface $eventManager |
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) { |
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$this->event_manager = $eventManager; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @since 2.1.5 added attachSelfToEventManager() |
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*/ |
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public function getEventManager()/*# : EventManagerInterface */ |
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{ |
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// create the default slave |
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if (is_null($this->event_manager)) { |
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// add own classname as scope |
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$this->setEventManager(new EventDispatcher(get_class($this))); |
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} |
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// attach self to the event manager if not yet |
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$this->attachSelfToEventManager(); |
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return $this->event_manager; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function trigger( |
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/*# string */ $eventName, |
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array $parameters = [] |
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)/*# : bool */ { |
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$evt = $this->newEvent($eventName, $this, $parameters); |
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return $this->getEventManager()->trigger($evt); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function triggerEvent( |
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/*# string */ $eventName, |
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array $parameters = [] |
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)/*# : EventInterface */ { |
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$evt = $this->newEvent($eventName, $this, $parameters); |
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$this->getEventManager()->trigger($evt); |
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return $evt; |
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} |
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/** |
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* Attach $this to the event manager if not yet |
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* |
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* @access protected |
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* @since 2.1.5 |
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*/ |
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protected function attachSelfToEventManager() |
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{ |
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if (!$this->listener_attached) { |
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if ($this->event_manager instanceof ListenerAwareInterface && |
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$this instanceof ListenerInterface |
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) { |
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$this->event_manager->attachListener($this); |
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} |
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$this->listener_attached = true; |
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} |
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} |
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} |
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phossa2 /
event
If you access a property on an interface, you most likely code against a concrete implementation of the interface.
Available Fixes
Adding an additional type check:
Changing the type hint: