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<?php |
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namespace Event; |
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use Psr\EventManager\EventInterface; |
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use Exception; |
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class Event implements EventInterface |
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{ |
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private $name; |
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private $params = []; |
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private $target; |
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private $isPropagationStopped = false; |
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/** |
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* @param string $name |
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* @param array $params |
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* @param object | string $target |
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* @param bool $isPropagationStopped |
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*/ |
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public function __construct( |
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$name, |
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$params = [], |
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$target = null, |
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$isPropagationStopped = false |
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) |
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{ |
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$this->setName($name); |
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$this->setParams($params); |
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$this->setTarget($target); |
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$this->stopPropagation($isPropagationStopped); |
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} |
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/** |
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* Get event name |
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* |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Get target/context from which event was triggered |
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* |
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* @return null|string|object |
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*/ |
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public function getTarget() |
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{ |
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return $this->target; |
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} |
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/** |
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* Get parameters passed to the event |
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* |
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* @return array |
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*/ |
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public function getParams() |
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{ |
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return $this->params; |
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} |
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/** |
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* Get a single parameter by name |
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* |
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* @param string $name |
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* @return mixed |
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*/ |
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public function getParam($name) |
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{ |
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return $this->params[$name]; |
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} |
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/** |
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* Set the event name |
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* |
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* @param string $name |
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* @return void |
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*/ |
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public function setName($name) |
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{ |
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if (!$this->validateName($name)) { |
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throw new Exception("Invalid event name format (Event name MUST contain \"A-z\", \"0-9\", \"_\", \".\"", 1); |
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} |
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$this->name = $name; |
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} |
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/** |
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* Set the event target |
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* |
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* @param null|string|object $target |
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* @return void |
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*/ |
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public function setTarget($target) |
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{ |
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$this->target = $target; |
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} |
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/** |
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* Set event parameters |
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* |
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* @param array $params |
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* @return void |
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*/ |
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public function setParams(array $params) |
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{ |
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$this->params = $params; |
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} |
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/** |
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* Indicate whether or not to stop propagating this event |
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* |
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* @param bool $flag |
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* @return void |
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*/ |
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public function stopPropagation($flag = true) |
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{ |
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$this->isPropagationStopped = $flag; |
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} |
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/** |
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* Has this event indicated event propagation should stop? |
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* |
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* @return bool |
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*/ |
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public function isPropagationStopped() |
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{ |
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return $this->isPropagationStopped; |
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} |
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/** |
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* Validate name with PSR specification |
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* |
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* @param string $name |
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* @return bool |
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*/ |
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private function validateName($name) |
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{ |
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if (preg_match_all('/[^(A-z0-9_.)]/', $name, $matches, PREG_SET_ORDER, 0)) { |
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return false; |
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} |
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return true; |
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} |
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} |
Folleah /
psr7-event-emitter
