external_entities-8.x-2.x-dev/src/Form/ExternalEntityTypeDeleteForm.php

<?php

namespace Drupal\external_entities\Form;

use Drupal\Core\Entity\EntityConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Messenger\MessengerInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Builds the form to delete an external entity type.
 */
class ExternalEntityTypeDeleteForm extends EntityConfirmFormBase {

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

  /**
   * External entity type restrictions.
   *
   * @var array
   */
  protected $locks;

  /**
   * Constructs a new VocabularyResetForm object.
   *
   * @param \Drupal\Core\Messenger\MessengerInterface $messenger
   *   The messenger service.
   */
  public function __construct(MessengerInterface $messenger) {
    $this->messenger = $messenger;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('messenger')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return $this->t('Are you sure you want to delete the external entity type %name?', ['%name' => $this->entity->label()]);
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return new Url('entity.external_entity_type.collection');
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {
    return $this->t('Delete');
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    // Check if external entity type has locks.
    $this->locks = $this->entity->getLocks() ?? [];

    if (!empty($this->locks['lock_delete'])) {
      return [
        '#type' => 'markup',
        '#markup' => $this->t('This external entity type cannot be deleted.'),
      ];
    }

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

  /**
   * {@inheritdoc}
   */
  protected function actions(array $form, FormStateInterface $form_state) {
    if (!empty($this->locks['lock_delete'])) {
      // Not removable.
      return [];
    }

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

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this->entity->delete();
    $this->messenger->addMessage($this->t('Deleted the %label external entity type.', [
      '%label' => $this->entity->label(),
    ]));
    $form_state->setRedirectUrl($this->getCancelUrl());
  }

  /**
   * {@inheritdoc}
   */
  public function getEntityFromRouteMatch(RouteMatchInterface $route_match, $entity_type_id) {
    if ($route_match->getParameter($entity_type_id) !== NULL) {
      $entity_id = $route_match->getParameter($entity_type_id);
      $entity = $this->entityTypeManager->getStorage($entity_type_id)->load($entity_id);
      if ($entity) {
        return $entity;
      }
    }

    return parent::getEntityFromRouteMatch($route_match, $entity_type_id);
  }

}