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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; |
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use Phossa2\Event\Traits\CountableTrait; |
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use Phossa2\Event\Traits\NameGlobbingTrait; |
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use Phossa2\Event\Interfaces\EventInterface; |
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use Phossa2\Event\Traits\SharedManagerTrait; |
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use Phossa2\Event\Traits\ListenerAwareTrait; |
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use Phossa2\Event\Interfaces\CountableInterface; |
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use Phossa2\Event\Interfaces\SharedManagerInterface; |
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use Phossa2\Event\Interfaces\ListenerAwareInterface; |
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/** |
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* EventDispatcher |
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* |
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* Advanced event manager with |
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* |
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* - event name globbing |
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* - shared manager support |
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* - attach/detach listener |
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* - able to trigger an event with countable times |
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* |
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* @package Phossa2\Event |
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* @author Hong Zhang <[email protected]> |
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* @version 2.0.0 |
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* @since 2.0.0 added |
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*/ |
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class EventDispatcher extends EventManager implements SharedManagerInterface, ListenerAwareInterface, CountableInterface |
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{ |
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use CountableTrait, |
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NameGlobbingTrait, |
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SharedManagerTrait, |
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ListenerAwareTrait; |
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/** |
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* event prototype |
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* |
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* @var EventInterface|null |
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* @access protected |
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*/ |
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protected $event_proto; |
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/** |
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* Create a event manager with defined scopes |
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* |
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* @param string|array $scopes |
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* @param EventInterface $event_proto event prototype if any |
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* @access public |
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*/ |
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public function __construct( |
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$scopes = '', |
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EventInterface $event_proto = null |
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) { |
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// set scopes |
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if ('' !== $scopes) { |
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$this->scopes = (array) $scopes; |
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} |
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// set event prototype |
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$this->event_proto = $event_proto; |
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} |
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/** |
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* Override `newEvent()` in EventManager. |
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* |
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* Added event prototype support |
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* |
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* {@inheritDoc} |
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*/ |
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protected function newEvent( |
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$eventName, |
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$context, |
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array $properties |
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)/*# : EventInterface */ { |
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if (is_object($eventName)) { |
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return $eventName; |
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} elseif ($this->event_proto) { |
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$evt = clone $this->event_proto; |
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return $evt($eventName, $context, $properties); |
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} else { |
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return new Event($eventName, $context, $properties); |
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} |
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} |
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/** |
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* Override `getMatchedQueue()` in EventManager. |
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* |
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* Support for shared manager & name globbing |
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* |
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* {@inheritDoc} |
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*/ |
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protected function getMatchedQueue( |
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/*# : string */ $eventName |
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)/*# : EventQueueInterface */ { |
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// get all shared managers |
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$managers = $this->getShareables(); |
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// add $this manager |
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array_unshift($managers, $this); |
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/* @var $mgr EventDispatcher */ |
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$nqueue = $this->newEventQueue(); |
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foreach ($managers as $mgr) { |
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$nqueue = $nqueue->combine($mgr->matchEventQueues($eventName)); |
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} |
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return $nqueue; |
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} |
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/** |
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* Get all event names of $this manager |
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* |
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* @return array |
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* @access protected |
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*/ |
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protected function getEventNames()/*# : array */ |
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{ |
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return array_keys($this->events); |
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} |
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/** |
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* Get a merged queue in $this manager for the given event name |
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* |
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* @param string $eventName |
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* @return EventQueueInterface |
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* @access protected |
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*/ |
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protected function matchEventQueues( |
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/*# string */ $eventName |
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)/*: EventQueueInterface */ { |
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$nqueue = $this->newEventQueue(); |
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$names = $this->globEventNames($eventName, $this->getEventNames()); |
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foreach ($names as $evtName) { |
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if ($this->hasEvent($evtName)) { |
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$nqueue = $nqueue->combine($this->events[$evtName]); |
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} |
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} |
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return $nqueue; |
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} |
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} |
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phossa2 /
event
