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<?php |
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namespace Fyuze\Event; |
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use Psr\Log\LoggerInterface; |
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use InvalidArgumentException; |
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class Emitter |
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{ |
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/** |
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* @var array |
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*/ |
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protected $events = []; |
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/** |
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* @var LoggerInterface|null |
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*/ |
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protected $logger; |
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/** |
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* @param $name |
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* @param \Closure $closure |
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*/ |
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public function listen($name, \Closure $closure) |
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{ |
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$this->events[$name][] = $closure; |
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} |
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/** |
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* @param $name |
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* @return bool |
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*/ |
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public function drop($name) |
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{ |
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if (!$this->has($name)) { |
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return false; |
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} |
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unset($this->events[$name]); |
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return true; |
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} |
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/** |
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* @param $name |
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* @return bool |
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*/ |
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public function has($name) |
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{ |
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return array_key_exists($name, $this->events); |
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} |
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/** |
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* @param $name |
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* @param array $params |
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* @return void |
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* @throws InvalidArgumentException |
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*/ |
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public function emit($name, $params = null) |
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{ |
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foreach ($this->locate($name) as $event) { |
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call_user_func_array( |
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$event, |
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is_array($params) ? $params : [$params] |
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); |
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$this->log(sprintf('Event: %s fired: %s', $name, json_encode($event))); |
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} |
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} |
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/** |
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* @param LoggerInterface $logger |
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* @return $this |
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*/ |
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public function setLogger(LoggerInterface $logger) |
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{ |
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$this->logger = $logger; |
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return $this; |
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} |
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/** |
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* @param $name |
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* @return array |
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*/ |
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protected function locate($name) |
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{ |
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if (!$this->has($name)) { |
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$this->log(sprintf('Event %s called, but no listeners were registered', $name)); |
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return []; |
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} |
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return $this->events[$name]; |
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} |
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/** |
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* @param $message |
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* @param string $level |
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* @return bool |
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*/ |
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protected function log($message, $level = 'notice') |
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{ |
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if ($this->logger !== null) { |
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$this->logger->log($level, $message); |
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return true; |
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} |
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return false; |
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} |
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} |
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fyuze /
framework
