3 namespace Drupal\language;
5 use Drupal\Core\Config\BootstrapConfigStorageFactory;
6 use Drupal\Core\DependencyInjection\ContainerBuilder;
7 use Drupal\Core\DependencyInjection\ServiceProviderBase;
8 use Drupal\Core\Language\LanguageInterface;
9 use Symfony\Component\DependencyInjection\Reference;
12 * Overrides the language_manager service to point to language's module one.
14 class LanguageServiceProvider extends ServiceProviderBase {
16 const CONFIG_PREFIX = 'language.entity.';
21 public function register(ContainerBuilder $container) {
22 // The following services are needed only on multilingual sites.
23 if ($this->isMultilingual()) {
24 $container->register('language_request_subscriber', 'Drupal\language\EventSubscriber\LanguageRequestSubscriber')
25 ->addTag('event_subscriber')
26 ->addArgument(new Reference('language_manager'))
27 ->addArgument(new Reference('language_negotiator'))
28 ->addArgument(new Reference('string_translation'))
29 ->addArgument(new Reference('current_user'));
31 $container->register('path_processor_language', 'Drupal\language\HttpKernel\PathProcessorLanguage')
32 ->addTag('path_processor_inbound', ['priority' => 300])
33 ->addTag('path_processor_outbound', ['priority' => 100])
34 ->addArgument(new Reference('config.factory'))
35 ->addArgument(new Reference('language_manager'))
36 ->addArgument(new Reference('language_negotiator'))
37 ->addArgument(new Reference('current_user'))
38 ->addArgument(new Reference('language.config_subscriber'))
39 ->addMethodCall('initConfigSubscriber');
46 public function alter(ContainerBuilder $container) {
47 $definition = $container->getDefinition('language_manager');
48 $definition->setClass('Drupal\language\ConfigurableLanguageManager')
49 ->addArgument(new Reference('config.factory'))
50 ->addArgument(new Reference('module_handler'))
51 ->addArgument(new Reference('language.config_factory_override'))
52 ->addArgument(new Reference('request_stack'));
53 if ($default_language_values = $this->getDefaultLanguageValues()) {
54 $container->setParameter('language.default_values', $default_language_values);
60 * Checks whether the site is multilingual.
63 * TRUE if the site is multilingual, FALSE otherwise.
65 protected function isMultilingual() {
66 // Assign the prefix to a local variable so it can be used in an anonymous
68 $prefix = static::CONFIG_PREFIX;
69 // @todo Try to swap out for config.storage to take advantage of database
70 // and caching. This might prove difficult as this is called before the
71 // container has finished building.
72 $config_storage = BootstrapConfigStorageFactory::get();
73 $config_ids = array_filter($config_storage->listAll($prefix), function ($config_id) use ($prefix) {
74 return $config_id != $prefix . LanguageInterface::LANGCODE_NOT_SPECIFIED && $config_id != $prefix . LanguageInterface::LANGCODE_NOT_APPLICABLE;
76 return count($config_ids) > 1;
80 * Gets the default language values.
83 * Returns the default language values for the language configured in
84 * system.site:default_langcode if the corresponding configuration entity
85 * exists, otherwise FALSE.
87 protected function getDefaultLanguageValues() {
88 $config_storage = BootstrapConfigStorageFactory::get();
89 $system = $config_storage->read('system.site');
90 $default_language = $config_storage->read(static::CONFIG_PREFIX . $system['default_langcode']);
91 if (is_array($default_language)) {
92 return $default_language;