www.aleph1.co.uk Git - yaffs-website/blob - web/core/modules/language/src/EventSubscriber/LanguageRequestSubscriber.php

   1 <?php
   2
   3 namespace Drupal\language\EventSubscriber;
   4
   5 use Drupal\Core\DrupalKernelInterface;
   6 use Drupal\Core\Session\AccountInterface;
   7 use Drupal\Core\StringTranslation\Translator\TranslatorInterface;
   8 use Drupal\language\ConfigurableLanguageManagerInterface;
   9 use Drupal\language\LanguageNegotiatorInterface;
  10 use Symfony\Component\HttpKernel\HttpKernelInterface;
  11 use Symfony\Component\HttpKernel\KernelEvents;
  12 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
  13 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  14
  15 /**
  16  * Sets the $request property on the language manager.
  17  */
  18 class LanguageRequestSubscriber implements EventSubscriberInterface {
  19
  20   /**
  21    * The language manager service.
  22    *
  23    * @var \Drupal\language\ConfigurableLanguageManagerInterface
  24    */
  25   protected $languageManager;
  26
  27   /**
  28    * The language negotiator.
  29    *
  30    * @var \Drupal\language\LanguageNegotiatorInterface
  31    */
  32   protected $negotiator;
  33
  34   /**
  35    * The translation service.
  36    *
  37    * @var \Drupal\Core\StringTranslation\Translator\TranslatorInterface;
  38    */
  39   protected $translation;
  40
  41   /**
  42    * The current active user.
  43    *
  44    * @var \Drupal\Core\Session\AccountInterface
  45    */
  46   protected $currentUser;
  47
  48   /**
  49    * Constructs a LanguageRequestSubscriber object.
  50    *
  51    * @param \Drupal\language\ConfigurableLanguageManagerInterface $language_manager
  52    *   The language manager service.
  53    * @param \Drupal\language\LanguageNegotiatorInterface $negotiator
  54    *   The language negotiator.
  55    * @param \Drupal\Core\StringTranslation\Translator\TranslatorInterface $translation
  56    *   The translation service.
  57    * @param \Drupal\Core\Session\AccountInterface $current_user
  58    *   The current active user.
  59    */
  60   public function __construct(ConfigurableLanguageManagerInterface $language_manager, LanguageNegotiatorInterface $negotiator, TranslatorInterface $translation, AccountInterface $current_user) {
  61     $this->languageManager = $language_manager;
  62     $this->negotiator = $negotiator;
  63     $this->translation = $translation;
  64     $this->currentUser = $current_user;
  65   }
  66
  67   /**
  68    * Initializes the language manager at the beginning of the request.
  69    *
  70    * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
  71    *   The Event to process.
  72    */
  73   public function onKernelRequestLanguage(GetResponseEvent $event) {
  74     if ($event->getRequestType() == HttpKernelInterface::MASTER_REQUEST) {
  75       $this->setLanguageOverrides();
  76     }
  77   }
  78
  79   /**
  80    * Initializes config overrides whenever the service container is rebuilt.
  81    */
  82   public function onContainerInitializeSubrequestFinished() {
  83     $this->setLanguageOverrides();
  84   }
  85
  86   /**
  87    * Sets the language for config overrides on the language manager.
  88    */
  89   private function setLanguageOverrides() {
  90     $this->negotiator->setCurrentUser($this->currentUser);
  91     if ($this->languageManager instanceof ConfigurableLanguageManagerInterface) {
  92       $this->languageManager->setNegotiator($this->negotiator);
  93       $this->languageManager->setConfigOverrideLanguage($this->languageManager->getCurrentLanguage());
  94     }
  95     // After the language manager has initialized, set the default langcode for
  96     // the string translations.
  97     $langcode = $this->languageManager->getCurrentLanguage()->getId();
  98     $this->translation->setDefaultLangcode($langcode);
  99   }
 100
 101   /**
 102    * Registers the methods in this class that should be listeners.
 103    *
 104    * @return array
 105    *   An array of event listener definitions.
 106    */
 107   public static function getSubscribedEvents() {
 108     $events[KernelEvents::REQUEST][] = ['onKernelRequestLanguage', 255];
 109     $events[DrupalKernelInterface::CONTAINER_INITIALIZE_SUBREQUEST_FINISHED][] = ['onContainerInitializeSubrequestFinished', 255];
 110
 111     return $events;
 112   }
 113
 114 }