Can't use patterns defined in oe_theme when admin theme is active

[vever001]

Hello,

I setup entity_embed on my website to embed media entities (documents for now).
I noticed that nothing gets displayed when we are in edit mode (admin theme active - seven) and attempt to display a media entity that uses a pattern defined in oe_theme (the file pattern here).

I haven't seen any entity_embed integration in OE modules so far. Perhaps you plan to do it later?
One solution would be to move all UI Patterns oe_theme_helper I guess ?

Anyway here is a workaround I used to format the embedded view mode of documents:

/**
 * Preprocessor for Media Document embedded.
 */
function mymodule_preprocess_media__document__embedded(array &$variables) {
  // @TODO The "file" pattern currently defined in oe_theme is not found when
  // we are in edit mode with the admin theme active.
  // So we abort when we're on the admin theme
  // But this needs to be fixed somehow...
  $admin_theme = \Drupal::config('system.theme')->get('admin');
  $current_theme = \Drupal::theme()->getActiveTheme()->getName();
  if ($admin_theme === $current_theme) {
    return;
  }

  /** @var \Drupal\media\Entity\Media $media_entity */
  $media_entity = $variables['media'];
  $media_source = $media_entity->getSource();
  $source_field_name = $media_source->getConfiguration()['source_field'];
  /** @var \Drupal\file\Entity\File $file_entity */
  $file_entity = $media_entity->get($source_field_name)->entity;

  $file_value_object = FileValueObject::fromFileEntity($file_entity);
  $file_value_object->setTitle($media_entity->getName());
  $variables['content'] = [
    '#type' => 'pattern',
    '#id' => 'file',
    '#variant' => '',
    '#fields' => [
      'button_label' => t('Download'),
      'file' => $file_value_object,
    ],
  ];
}

Any advice on this is welcome.

[vever001]

Most probably linked to nuvoleweb/ui_patterns#298