View mode ajax callback

[paulmartin84]

Pretty sure that the not(!) in the if condition is not needed. I believe the intended functionally is that if you choose default as the view mode you don't have to choose a fallback as default will always exist.

  if (!$settings['view_mode'] == 'default') {
    $widget['preview']['fallback_view_mode']['#prefix'] = '<div id="inline-entity-form-preview-fallback-view-mode" style="display: none;">';
  }

should be:

  if ($settings['view_mode'] == 'default') {
    $widget['preview']['fallback_view_mode']['#prefix'] = '<div id="inline-entity-form-preview-fallback-view-mode" style="display: none;">';
  }