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<?php
/**
 * @file
 * Contains \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationSelected.
 */
namespace Drupal\language\Plugin\LanguageNegotiation;
use Drupal\language\LanguageNegotiationMethodBase;
use Symfony\Component\HttpFoundation\Request;
/**
 * Class for identifying language from a selected language.
 *
 * @LanguageNegotiation(
 *   id = Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationSelected::METHOD_ID,
 *   weight = 12,
 *   name = @Translation("Selected language"),
 *   description = @Translation("Language based on a selected language."),
 *   config_route_name = "language.negotiation_selected"
 * )
 */
class LanguageNegotiationSelected extends LanguageNegotiationMethodBase {
  /**
   * The language negotiation method id.
   */
  const METHOD_ID = 'language-selected';
  /**
   * {@inheritdoc}
   */
  public function getLangcode(Request $request = NULL) {
    $langcode = NULL;
    if ($this->languageManager) {
      $langcode = $this->config->get('language.negotiation')->get('selected_langcode');
    }
    return $langcode;
  }
}