bibcite-8.x-1.x-dev/modules/bibcite_entity/src/Form/DeleteMultiple.php

<?php

namespace Drupal\bibcite_entity\Form;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Url;
use Drupal\Core\TempStore\PrivateTempStoreFactory;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;

/**
 * Delete multiple entities form.
 */
class DeleteMultiple extends ConfirmFormBase {

  /**
   * The array of entities to delete.
   *
   * @var array
   */
  protected $entityInfo = [];

  /**
   * The tempstore object.
   *
   * @var \Drupal\Core\TempStore\PrivateTempStore
   */
  protected $tempStore;

  /**
   * The entity type manager service.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The current user object.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $currentUser;

  /**
   * The entity type identifier.
   *
   * @var string
   */
  protected $entityTypeId;

  /**
   * Constructs a DeleteMultiple form object.
   *
   * @param \Drupal\Core\TempStore\PrivateTempStoreFactory $temp_store_factory
   *   The tempstore factory.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $manager
   *   The entity manager.
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user object.
   */
  public function __construct(PrivateTempStoreFactory $temp_store_factory, EntityTypeManagerInterface $manager, AccountInterface $current_user) {
    $this->tempStore = $temp_store_factory->get('bibcite_entity_multiple_delete');
    $this->entityTypeManager = $manager;
    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('tempstore.private'),
      $container->get('entity_type.manager'),
      $container->get('current_user')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return $this->formatPlural(count($this->entityInfo), 'Are you sure you want to delete this item?', 'Are you sure you want to delete these items?');
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return new Url("entity.{$this->entityTypeId}.collection");
  }

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

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $entity_type_id = NULL) {
    $this->entityTypeId = $entity_type_id;
    $this->entityInfo = $this->tempStore->get($this->currentUser->id());
    if (empty($this->entityInfo)) {
      return new RedirectResponse($this->getCancelUrl()->setAbsolute()->toString());
    }

    $form['entities'] = [
      '#theme' => 'item_list',
      '#items' => $this->entityInfo,
    ];

    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    if ($form_state->getValue('confirm') && !empty($this->entityInfo)) {
      $storage = $this->entityTypeManager->getStorage($this->entityTypeId);

      $entities = $storage->loadMultiple(array_keys($this->entityInfo));
      $storage->delete($entities);

      $this->logger('bibcite')->notice('Deleted @count references.', ['@count' => count($entities)]);
      $this->messenger()->addStatus($this->formatPlural(count($entities), 'Deleted 1 reference.', 'Deleted @count references.'));

      $this->tempStore->delete($this->currentUser->id());
    }

    $form_state->setRedirect('entity.bibcite_reference.collection');
  }

}