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<?php |
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namespace Onoi\EventDispatcher\Listener; |
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use Onoi\EventDispatcher\EventListener; |
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use Onoi\EventDispatcher\DispatchContext; |
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use RuntimeException; |
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/** |
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* @license GNU GPL v2+ |
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* @since 1.0 |
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* |
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* @author mwjames |
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*/ |
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class GenericCallbackEventListener implements EventListener { |
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/** |
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* @var array |
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*/ |
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protected $callbacks = array(); |
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/** |
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* @var boolean |
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*/ |
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private $propagationStopState = false; |
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/** |
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* @since 1.0 |
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* |
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* @param Closure|callable|null $callback |
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*/ |
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public function __construct( $callback = null ) { |
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if ( $callback !== null ) { |
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$this->registerCallback( $callback ); |
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} |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param Closure|callable $callback |
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* @throws RuntimeException |
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*/ |
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public function registerCallback( $callback ) { |
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if ( !is_callable( $callback ) ) { |
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throw new RuntimeException( "Invoked object is not a valid callback or Closure" ); |
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} |
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// While this does not build a real dependency chain, it allows for atomic |
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// event handling by following FIFO |
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$this->callbacks[] = $callback; |
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} |
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/** |
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* @since 1.0 |
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* |
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* {@inheritDoc} |
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*/ |
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public function execute( DispatchContext $dispatchContext = null ) { |
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foreach ( $this->callbacks as $callback ) { |
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call_user_func_array( $callback, array( $dispatchContext ) ); |
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} |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param boolean $propagationStopState |
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*/ |
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public function setPropagationStopState( $propagationStopState ) { |
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$this->propagationStopState = (bool)$propagationStopState; |
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} |
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/** |
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* @since 1.0 |
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* |
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* {@inheritDoc} |
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*/ |
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public function isPropagationStopped() { |
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return $this->propagationStopState; |
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} |
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} |
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onoi /
event-dispatcher
