LanguageListBuilder.php in Drupal 10

Namespace

Drupal\language

File

core/modules/language/src/LanguageListBuilder.php

<?php

namespace Drupal\language;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Config\Entity\DraggableListBuilder;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Messenger\MessengerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Defines a class to build a listing of language entities.
 *
 * @see \Drupal\language\Entity\ConfigurableLanguage
 */
class LanguageListBuilder extends DraggableListBuilder {

  /**
   * {@inheritdoc}
   */
  protected $entitiesKey = 'languages';

  /**
   * The language manager.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * The configuration factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * The messenger.
   *
   * @var \Drupal\Core\Messenger\MessengerInterface
   */
  protected $messenger;

  /**
   * {@inheritdoc}
   */
  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
    return new static($entity_type, $container
      ->get('entity_type.manager')
      ->getStorage($entity_type
      ->id()), $container
      ->get('language_manager'), $container
      ->get('config.factory'), $container
      ->get('messenger'));
  }

  /**
   * Constructs a new LanguageListBuilder object.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
   *   The entity type definition.
   * @param \Drupal\Core\Entity\EntityStorageInterface $storage
   *   The entity storage handler class.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager.
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The factory for configuration objects.
   * @param \Drupal\Core\Messenger\MessengerInterface $messenger
   *   The messenger.
   */
  public function __construct(EntityTypeInterface $entity_type, EntityStorageInterface $storage, LanguageManagerInterface $language_manager, ConfigFactoryInterface $config_factory, MessengerInterface $messenger) {
    parent::__construct($entity_type, $storage);
    $this->languageManager = $language_manager;
    $this->configFactory = $config_factory;
    $this->messenger = $messenger;
  }

  /**
   * {@inheritdoc}
   */
  public function load() {
    $entities = $this->storage
      ->loadByProperties([
      'locked' => FALSE,
    ]);

    // Sort the entities using the entity class's sort() method.
    // See \Drupal\Core\Config\Entity\ConfigEntityBase::sort().
    uasort($entities, [
      $this->entityType
        ->getClass(),
      'sort',
    ]);
    return $entities;
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'language_admin_overview_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildHeader() {
    $header = [
      'label' => t('Name'),
      'default' => t('Default'),
    ] + parent::buildHeader();
    return $header;
  }

  /**
   * {@inheritdoc}
   */
  public function buildRow(EntityInterface $entity) {
    $row['label'] = $entity
      ->label();
    $row['default'] = [
      '#type' => 'radio',
      '#parents' => [
        'site_default_language',
      ],
      '#title' => t('Set @title as default', [
        '@title' => $entity
          ->label(),
      ]),
      '#title_display' => 'invisible',
      '#return_value' => $entity
        ->id(),
      '#id' => 'edit-site-default-language-' . $entity
        ->id(),
    ];

    // Mark the right language as default in the form.
    if ($entity
      ->id() == $this->languageManager
      ->getDefaultLanguage()
      ->getId()) {
      $row['default']['#default_value'] = $entity
        ->id();
    }
    return $row + parent::buildRow($entity);
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $form = parent::buildForm($form, $form_state);
    $form[$this->entitiesKey]['#languages'] = $this->entities;
    $form['actions']['submit']['#value'] = t('Save configuration');
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    if (!isset($this->entities[$form_state
      ->getValue('site_default_language')])) {
      $form_state
        ->setErrorByName('site_default_language', $this
        ->t('Selected default language no longer exists.'));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);

    // Save the default language if changed.
    $new_id = $form_state
      ->getValue('site_default_language');
    if ($new_id != $this->languageManager
      ->getDefaultLanguage()
      ->getId()) {
      $this->configFactory
        ->getEditable('system.site')
        ->set('default_langcode', $new_id)
        ->save();
      $this->languageManager
        ->reset();
    }
    if ($this->languageManager instanceof ConfigurableLanguageManagerInterface) {
      $this->languageManager
        ->updateLockedLanguageWeights();
    }
    $this->messenger
      ->addStatus($this
      ->t('Configuration saved.'));

    // Force the redirection to the page with the language we have just
    // selected as default.
    $form_state
      ->setRedirectUrl($this->entities[$new_id]
      ->toUrl('collection', [
      'language' => $this->entities[$new_id],
    ]));
  }

}

Classes

Name	Description
LanguageListBuilder	Defines a class to build a listing of language entities.