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<?php |
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/** |
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* Webino™ (http://webino.sk) |
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* |
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* @link https://github.com/webino/event-emitter |
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* @copyright Copyright (c) 2019 Webino, s.r.o. (http://webino.sk) |
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* @author Peter Bačinský <[email protected]> |
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* @license BSD-3-Clause |
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*/ |
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namespace Webino; |
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/** |
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* Trait EventEmitterTrait |
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* @package event-emitter |
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*/ |
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trait EventEmitterTrait |
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{ |
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/** |
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* @var EventDispatcherInterface|null |
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*/ |
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protected $eventDispatcher; |
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/** |
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* Returns event dispatcher. |
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* |
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* @return EventDispatcherInterface |
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*/ |
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public function getEventDispatcher(): EventDispatcherInterface |
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{ |
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if (!$this->eventDispatcher) { |
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$this->eventDispatcher = new EventDispatcher; |
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} |
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return $this->eventDispatcher; |
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} |
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/** |
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* Inject event dispatcher. |
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* |
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* @api |
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* @param EventDispatcherInterface $dispatcher |
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*/ |
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public function setEventDispatcher(EventDispatcherInterface $dispatcher): void |
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{ |
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$this->eventDispatcher = $dispatcher; |
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} |
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/** |
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* Invoke handlers. |
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* |
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* @api |
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* @param string|EventInterface $event Event name or object |
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* @param callable|null $until Invoke handlers until callback return value evaluate to true |
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* @param EventEmitterInterface|null $target |
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* @return EventInterface Event object |
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*/ |
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public function emit($event, callable $until = null, EventEmitterInterface $target = null): EventInterface |
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{ |
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return $this->getEventDispatcher()->emit($event, $until, $target ?: $this); |
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} |
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/** |
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* Set event handler. |
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* |
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* @api |
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* @param string|EventInterface|EventHandlerInterface $event Event name, object or event handler |
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* @param callable|null $callback Event handler |
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* @param int $priority Handler invocation priority |
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* @return void |
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*/ |
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public function on($event, $callback = null, int $priority = 0) |
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{ |
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$this->getEventDispatcher()->on($event, $callback, $priority); |
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} |
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/** |
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* Remove event handler. |
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* |
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* @api |
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* @param callable|EventHandlerInterface|null $callback Event handler |
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* @param string|EventInterface|null $event Event name or object |
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* @return void |
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*/ |
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public function off($callback = null, $event = null): void |
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{ |
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$this->getEventDispatcher()->off($callback, $event); |
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} |
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} |
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webino /
event-emitter
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