configureViewModes example

/** * {@inheritdoc} */
  public function getDynamicPluginConfig(array $static_plugin_config, EditorInterface $editor): array {
    $dynamic_plugin_config = $static_plugin_config;
    $dynamic_plugin_config['drupalMedia']['previewURL'] = Url::fromRoute('media.filter.preview')
      ->setRouteParameter('filter_format', $editor->getFilterFormat()->id())
      ->toString(TRUE)
      ->getGeneratedUrl();
    [$element_style_configuration, $toolbar_configuration,
    ] = self::configureViewModes($editor);

    $dynamic_plugin_config['drupalElementStyles']['viewMode'] = $element_style_configuration;
    if ($this->getConfiguration()['allow_view_mode_override']) {
      $dynamic_plugin_config['drupalMedia']['toolbar'][] = $toolbar_configuration;
    }
    $dynamic_plugin_config['drupalMedia']['metadataUrl'] = self::getUrlWithReplacedCsrfTokenPlaceholder(
      Url::fromRoute('ckeditor5.media_entity_metadata')
        ->setRouteParameter('editor', $editor->id())
    );
    $dynamic_plugin_config['drupalMedia']['previewCsrfToken'] = \Drupal::csrfToken()->get('X-Drupal-MediaPreview-CSRF-Token');
    return $dynamic_plugin_config;
  }