--- /dev/null
+<?php
+
+namespace Drupal\media\Form;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Entity\EntityDeleteForm;
+use Drupal\Core\Form\FormStateInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for media type deletion.
+ */
+class MediaTypeDeleteConfirmForm extends EntityDeleteForm {
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Constructs a new MediaTypeDeleteConfirm object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity type manager.
+ */
+ public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+ $this->entityTypeManager = $entity_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity_type.manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $num_entities = $this->entityTypeManager->getStorage('media')->getQuery()
+ ->condition('bundle', $this->entity->id())
+ ->count()
+ ->execute();
+ if ($num_entities) {
+ $form['#title'] = $this->getQuestion();
+ $form['description'] = [
+ '#type' => 'inline_template',
+ '#template' => '<p>{{ message }}</p>',
+ '#context' => [
+ 'message' => $this->formatPlural($num_entities,
+ '%type is used by @count media item on your site. You can not remove this media type until you have removed all of the %type media items.',
+ '%type is used by @count media items on your site. You can not remove this media type until you have removed all of the %type media items.',
+ ['%type' => $this->entity->label()]),
+ ],
+ ];
+
+ return $form;
+ }
+
+ return parent::buildForm($form, $form_state);
+ }
+
+}