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<?php /* * This file is part of SwiftMailer. * (c) 2004-2009 Chris Corbyn * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /** * The EventDispatcher which handles the event dispatching layer. * * @author Chris Corbyn */ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher { /** A map of event types to their associated listener types */ private $eventMap = []; /** Event listeners bound to this dispatcher */ private $listeners = []; /** Listeners queued to have an Event bubbled up the stack to them */ private $bubbleQueue = []; /** * Create a new EventDispatcher. */ public function __construct() { $this->eventMap = [ 'Swift_Events_CommandEvent' => 'Swift_Events_CommandListener', 'Swift_Events_ResponseEvent' => 'Swift_Events_ResponseListener', 'Swift_Events_SendEvent' => 'Swift_Events_SendListener', 'Swift_Events_TransportChangeEvent' => 'Swift_Events_TransportChangeListener', 'Swift_Events_TransportExceptionEvent' => 'Swift_Events_TransportExceptionListener', ]; } /** * Create a new SendEvent for $source and $message. * * @return Swift_Events_SendEvent */ public function createSendEvent(Swift_Transport $source, Swift_Mime_SimpleMessage $message) { return new Swift_Events_SendEvent($source, $message); } /** * Create a new CommandEvent for $source and $command. * * @param string $command That will be executed * @param array $successCodes That are needed * * @return Swift_Events_CommandEvent */ public function createCommandEvent(Swift_Transport $source, $command, $successCodes = []) { return new Swift_Events_CommandEvent($source, $command, $successCodes); } /** * Create a new ResponseEvent for $source and $response. * * @param string $response * @param bool $valid If the response is valid * * @return Swift_Events_ResponseEvent */ public function createResponseEvent(Swift_Transport $source, $response, $valid) { return new Swift_Events_ResponseEvent($source, $response, $valid); } /** * Create a new TransportChangeEvent for $source. * * @return Swift_Events_TransportChangeEvent */ public function createTransportChangeEvent(Swift_Transport $source) { return new Swift_Events_TransportChangeEvent($source); } /** * Create a new TransportExceptionEvent for $source. * * @return Swift_Events_TransportExceptionEvent */ public function createTransportExceptionEvent(Swift_Transport $source, Swift_TransportException $ex) { return new Swift_Events_TransportExceptionEvent($source, $ex); } /** * Bind an event listener to this dispatcher. */ public function bindEventListener(Swift_Events_EventListener $listener) { foreach ($this->listeners as $l) { // Already loaded if ($l === $listener) { return; } } $this->listeners[] = $listener; } /** * Dispatch the given Event to all suitable listeners. * * @param string $target method */ public function dispatchEvent(Swift_Events_EventObject $evt, $target) { $this->prepareBubbleQueue($evt); $this->bubble($evt, $target); } /** Queue listeners on a stack ready for $evt to be bubbled up it */ private function prepareBubbleQueue(Swift_Events_EventObject $evt) { $this->bubbleQueue = []; $evtClass = get_class($evt); foreach ($this->listeners as $listener) { if (array_key_exists($evtClass, $this->eventMap) && ($listener instanceof $this->eventMap[$evtClass])) { $this->bubbleQueue[] = $listener; } } } /** Bubble $evt up the stack calling $target() on each listener */ private function bubble(Swift_Events_EventObject $evt, $target) { if (!$evt->bubbleCancelled() && $listener = array_shift($this->bubbleQueue)) { $listener->$target($evt); $this->bubble($evt, $target); } } }