--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\DataCollector;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcherInterface;
+
+/**
+ * EventDataCollector.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class EventDataCollector extends DataCollector implements LateDataCollectorInterface
+{
+ protected $dispatcher;
+
+ public function __construct(EventDispatcherInterface $dispatcher = null)
+ {
+ $this->dispatcher = $dispatcher;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function collect(Request $request, Response $response, \Exception $exception = null)
+ {
+ $this->data = array(
+ 'called_listeners' => array(),
+ 'not_called_listeners' => array(),
+ );
+ }
+
+ public function lateCollect()
+ {
+ if ($this->dispatcher instanceof TraceableEventDispatcherInterface) {
+ $this->setCalledListeners($this->dispatcher->getCalledListeners());
+ $this->setNotCalledListeners($this->dispatcher->getNotCalledListeners());
+ }
+ }
+
+ /**
+ * Sets the called listeners.
+ *
+ * @param array $listeners An array of called listeners
+ *
+ * @see TraceableEventDispatcherInterface
+ */
+ public function setCalledListeners(array $listeners)
+ {
+ $this->data['called_listeners'] = $listeners;
+ }
+
+ /**
+ * Gets the called listeners.
+ *
+ * @return array An array of called listeners
+ *
+ * @see TraceableEventDispatcherInterface
+ */
+ public function getCalledListeners()
+ {
+ return $this->data['called_listeners'];
+ }
+
+ /**
+ * Sets the not called listeners.
+ *
+ * @param array $listeners An array of not called listeners
+ *
+ * @see TraceableEventDispatcherInterface
+ */
+ public function setNotCalledListeners(array $listeners)
+ {
+ $this->data['not_called_listeners'] = $listeners;
+ }
+
+ /**
+ * Gets the not called listeners.
+ *
+ * @return array An array of not called listeners
+ *
+ * @see TraceableEventDispatcherInterface
+ */
+ public function getNotCalledListeners()
+ {
+ return $this->data['not_called_listeners'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getName()
+ {
+ return 'events';
+ }
+}