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<?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\EventListener;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\Event\FinishRequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\RequestContextAwareInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Initializes the locale based on the current request.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class LocaleListener implements EventSubscriberInterface
{
private $router;
private $defaultLocale;
private $requestStack;
/**
* Constructor.
*
* @param RequestStack $requestStack A RequestStack instance
* @param string $defaultLocale The default locale
* @param RequestContextAwareInterface|null $router The router
*/
public function __construct(RequestStack $requestStack, $defaultLocale = 'en', RequestContextAwareInterface $router = null)
{
$this->defaultLocale = $defaultLocale;
$this->requestStack = $requestStack;
$this->router = $router;
}
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$request->setDefaultLocale($this->defaultLocale);
$this->setLocale($request);
$this->setRouterContext($request);
}
public function onKernelFinishRequest(FinishRequestEvent $event)
{
if (null !== $parentRequest = $this->requestStack->getParentRequest()) {
$this->setRouterContext($parentRequest);
}
}
private function setLocale(Request $request)
{
if ($locale = $request->attributes->get('_locale')) {
$request->setLocale($locale);
}
}
private function setRouterContext(Request $request)
{
if (null !== $this->router) {
$this->router->getContext()->setParameter('_locale', $request->getLocale());
}
}
public static function getSubscribedEvents()
{
return array(
// must be registered after the Router to have access to the _locale
KernelEvents::REQUEST => array(array('onKernelRequest', 16)),
KernelEvents::FINISH_REQUEST => array(array('onKernelFinishRequest', 0)),
);
}
}