ExternalLinkAttributes::getViewerTypeByFile

static function getViewerTypeByFile(array $fileArray)
{
	$documentHandler = Driver::getInstance()->getDocumentHandlersManager()->getDefaultHandlerForView();
	$viewerTypeByFile = parent::getViewerTypeByFile($fileArray);
	if ($viewerTypeByFile === Pdf::JS_TYPE_DOCUMENT && $documentHandler instanceof OnlyOfficeHandler)
	{
		return 'cloud-document';
	}
	if ($viewerTypeByFile === Pdf::JS_TYPE_DOCUMENT && !($documentHandler instanceof BitrixHandler))
	{
		return Renderer::JS_TYPE_UNKNOWN;
	}

	return $viewerTypeByFile;
}