Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\user\Plugin\LanguageNegotiation;
Chris@0: 
Chris@0: use Drupal\Core\PathProcessor\PathProcessorManager;
Chris@0: use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
Chris@0: use Drupal\Core\Routing\AdminContext;
Chris@0: use Drupal\Core\Routing\StackedRouteMatchInterface;
Chris@0: use Drupal\language\LanguageNegotiationMethodBase;
Chris@0: use Symfony\Cmf\Component\Routing\RouteObjectInterface;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: use Symfony\Component\HttpFoundation\Request;
Chris@0: use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
Chris@0: use Symfony\Component\Routing\Exception\ResourceNotFoundException;
Chris@0: use Symfony\Component\Routing\Matcher\UrlMatcherInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Identifies admin language from the user preferences.
Chris@0:  *
Chris@0:  * @LanguageNegotiation(
Chris@0:  *   id = Drupal\user\Plugin\LanguageNegotiation\LanguageNegotiationUserAdmin::METHOD_ID,
Chris@0:  *   types = {Drupal\Core\Language\LanguageInterface::TYPE_INTERFACE},
Chris@0:  *   weight = -10,
Chris@0:  *   name = @Translation("Account administration pages"),
Chris@0:  *   description = @Translation("Account administration pages language setting.")
Chris@0:  * )
Chris@0:  */
Chris@0: class LanguageNegotiationUserAdmin extends LanguageNegotiationMethodBase implements ContainerFactoryPluginInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The language negotiation method id.
Chris@0:    */
Chris@0:   const METHOD_ID = 'language-user-admin';
Chris@0: 
Chris@0:   /**
Chris@0:    * The admin context.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Routing\AdminContext
Chris@0:    */
Chris@0:   protected $adminContext;
Chris@0: 
Chris@0:   /**
Chris@0:    * The router.
Chris@0:    *
Chris@0:    * This is only used when called from an event subscriber, before the request
Chris@0:    * has been populated with the route info.
Chris@0:    *
Chris@0:    * @var \Symfony\Component\Routing\Matcher\UrlMatcherInterface
Chris@0:    */
Chris@0:   protected $router;
Chris@0: 
Chris@0:   /**
Chris@0:    * The path processor manager.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\PathProcessor\PathProcessorManager
Chris@0:    */
Chris@0:   protected $pathProcessorManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * The stacked route match.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Routing\StackedRouteMatchInterface
Chris@0:    */
Chris@0:   protected $stackedRouteMatch;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new LanguageNegotiationUserAdmin instance.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Routing\AdminContext $admin_context
Chris@0:    *   The admin context.
Chris@0:    * @param \Symfony\Component\Routing\Matcher\UrlMatcherInterface $router
Chris@0:    *   The router.
Chris@0:    * @param \Drupal\Core\PathProcessor\PathProcessorManager $path_processor_manager
Chris@0:    *   The path processor manager.
Chris@0:    * @param \Drupal\Core\Routing\StackedRouteMatchInterface $stacked_route_match
Chris@0:    *   The stacked route match.
Chris@0:    */
Chris@0:   public function __construct(AdminContext $admin_context, UrlMatcherInterface $router, PathProcessorManager $path_processor_manager, StackedRouteMatchInterface $stacked_route_match) {
Chris@0:     $this->adminContext = $admin_context;
Chris@0:     $this->router = $router;
Chris@0:     $this->pathProcessorManager = $path_processor_manager;
Chris@0:     $this->stackedRouteMatch = $stacked_route_match;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
Chris@0:     return new static(
Chris@0:       $container->get('router.admin_context'),
Chris@0:       $container->get('router'),
Chris@0:       $container->get('path_processor_manager'),
Chris@0:       $container->get('current_route_match')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getLangcode(Request $request = NULL) {
Chris@0:     $langcode = NULL;
Chris@0: 
Chris@0:     // User preference (only for administrators).
Chris@0:     if ($this->currentUser->hasPermission('access administration pages') && ($preferred_admin_langcode = $this->currentUser->getPreferredAdminLangcode(FALSE)) && $this->isAdminPath($request)) {
Chris@0:       $langcode = $preferred_admin_langcode;
Chris@0:     }
Chris@0: 
Chris@0:     // Not an admin, no admin language preference or not on an admin path.
Chris@0:     return $langcode;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks whether the given path is an administrative one.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpFoundation\Request $request
Chris@0:    *   The request object.
Chris@0:    *
Chris@0:    * @return bool
Chris@0:    *   TRUE if the path is administrative, FALSE otherwise.
Chris@0:    */
Chris@0:   protected function isAdminPath(Request $request) {
Chris@0:     $result = FALSE;
Chris@0:     if ($request && $this->adminContext) {
Chris@0:       // If called from an event subscriber, the request may not have the route
Chris@0:       // object yet (it is still being built), so use the router to look up
Chris@0:       // based on the path.
Chris@0:       $route_match = $this->stackedRouteMatch->getRouteMatchFromRequest($request);
Chris@0:       if ($route_match && !$route_object = $route_match->getRouteObject()) {
Chris@0:         try {
Chris@17:           // Some inbound path processors make changes to the request. Make a
Chris@17:           // copy as we're not actually routing the request so we do not want to
Chris@17:           // make changes.
Chris@17:           $cloned_request = clone $request;
Chris@0:           // Process the path as an inbound path. This will remove any language
Chris@0:           // prefixes and other path components that inbound processing would
Chris@0:           // clear out, so we can attempt to load the route clearly.
Chris@17:           $path = $this->pathProcessorManager->processInbound(urldecode(rtrim($cloned_request->getPathInfo(), '/')), $cloned_request);
Chris@0:           $attributes = $this->router->match($path);
Chris@0:         }
Chris@0:         catch (ResourceNotFoundException $e) {
Chris@0:           return FALSE;
Chris@0:         }
Chris@0:         catch (AccessDeniedHttpException $e) {
Chris@0:           return FALSE;
Chris@0:         }
Chris@0:         $route_object = $attributes[RouteObjectInterface::ROUTE_OBJECT];
Chris@0:       }
Chris@0:       $result = $this->adminContext->isAdminRoute($route_object);
Chris@0:     }
Chris@0:     return $result;
Chris@0:   }
Chris@0: 
Chris@0: }