+<?php
+
+namespace Wallabag\CoreBundle\EventListener;
+
+use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+class LocaleListener implements EventSubscriberInterface
+{
+ private $defaultLocale;
+
+ public function __construct($defaultLocale = 'en')
+ {
+ $this->defaultLocale = $defaultLocale;
+ }
+
+ public function onKernelRequest(GetResponseEvent $event)
+ {
+ $request = $event->getRequest();
+ if (!$request->hasPreviousSession()) {
+ return;
+ }
+
+ // try to see if the locale has been set as a _locale routing parameter
+ if ($locale = $request->attributes->get('_locale')) {
+ $request->getSession()->set('_locale', $locale);
+ } else {
+ // if no explicit locale has been set on this request, use one from the session
+ $request->setLocale($request->getSession()->get('_locale', $this->defaultLocale));
+ }
+ }
+
+ public static function getSubscribedEvents()
+ {
+ return array(
+ // must be registered before the default Locale listener
+ KernelEvents::REQUEST => array(array('onKernelRequest', 17)),
+ );
+ }
+}