class MediaLibraryEditorOpener

class MediaLibraryEditorOpener implements MediaLibraryOpenerInterface {
    
    /**
     * The text format entity storage.
     *
     * @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface
     */
    protected $filterStorage;
    
    /**
     * The media storage.
     *
     * @var \Drupal\Core\Entity\ContentEntityStorageInterface
     */
    protected $mediaStorage;
    
    /**
     * The MediaLibraryEditorOpener constructor.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager) {
        $this->filterStorage = $entity_type_manager->getStorage('filter_format');
        $this->mediaStorage = $entity_type_manager->getStorage('media');
    }
    
    /**
     * {@inheritdoc}
     */
    public function checkAccess(MediaLibraryState $state, AccountInterface $account) {
        $filter_format_id = $state->getOpenerParameters()['filter_format_id'];
        $filter_format = $this->filterStorage
            ->load($filter_format_id);
        if (empty($filter_format)) {
            return AccessResult::forbidden()->addCacheTags([
                'filter_format_list',
            ])
                ->setReason("The text format '{$filter_format_id}' could not be loaded.");
        }
        $filters = $filter_format->filters();
        return $filter_format->access('use', $account, TRUE)
            ->andIf(AccessResult::allowedIf($filters->has('media_embed') && $filters->get('media_embed')->status === TRUE));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getSelectionResponse(MediaLibraryState $state, array $selected_ids) {
        $selected_media = $this->mediaStorage
            ->load(reset($selected_ids));
        $response = new AjaxResponse();
        $values = [
            'attributes' => [
                'data-entity-type' => 'media',
                'data-entity-uuid' => $selected_media->uuid(),
                'data-align' => 'center',
            ],
        ];
        $response->addCommand(new EditorDialogSave($values));
        return $response;
    }

}