Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\language\Plugin\Derivative;
Chris@0: 
Chris@0: use Drupal\Component\Plugin\Derivative\DeriverBase;
Chris@0: use Drupal\language\ConfigurableLanguageManagerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides language switcher block plugin definitions for all languages.
Chris@0:  */
Chris@0: class LanguageBlock extends DeriverBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getDerivativeDefinitions($base_plugin_definition) {
Chris@0:     $language_manager = \Drupal::languageManager();
Chris@0: 
Chris@0:     if ($language_manager instanceof ConfigurableLanguageManagerInterface) {
Chris@0:       $info = $language_manager->getDefinedLanguageTypesInfo();
Chris@0:       $configurable_types = $language_manager->getLanguageTypes();
Chris@0:       foreach ($configurable_types as $type) {
Chris@0:         $this->derivatives[$type] = $base_plugin_definition;
Chris@0:         $this->derivatives[$type]['admin_label'] = t('Language switcher (@type)', ['@type' => $info[$type]['name']]);
Chris@0:       }
Chris@0:       // If there is just one configurable type then change the title of the
Chris@0:       // block.
Chris@0:       if (count($configurable_types) == 1) {
Chris@0:         $this->derivatives[reset($configurable_types)]['admin_label'] = t('Language switcher');
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return parent::getDerivativeDefinitions($base_plugin_definition);
Chris@0:   }
Chris@0: 
Chris@0: }