ResponsiveImageStyle::isEmptyImageStyleMapping

public static ResponsiveImageStyle::isEmptyImageStyleMapping(array $image_style_mapping)

public static function isEmptyImageStyleMapping(array $image_style_mapping) {
  if (!empty($image_style_mapping)) {
    switch ($image_style_mapping['image_mapping_type']) {
      case 'sizes':
        // The image style mapping must have a sizes attribute defined and one
        // or more image styles selected.
        if ($image_style_mapping['image_mapping']['sizes'] && $image_style_mapping['image_mapping']['sizes_image_styles']) {
          return FALSE;
        }
        break;
      case 'image_style':
        // The image style mapping must have an image style selected.
        if ($image_style_mapping['image_mapping']) {
          return FALSE;
        }
        break;
    }
  }
  return TRUE;
}