element.php

См. документацию.

<?
 
namespace Bitrix\Lists\Preview;
 
class Element
{
    public static function buildPreview($parameters)
    {
        global $APPLICATION;
 
        ob_start();
        $APPLICATION->IncludeComponent(
            'bitrix:lists.element.preview',
            '',
            $parameters
        );
        return ob_get_clean();
    }
 
    public static function checkUserReadAccess($parameters)
    {
        global $USER;
 
        $parameters['listId'] = (int)$parameters['listId'];
        $parameters['elementId'] = (int)$parameters['elementId'];
 
        if($parameters['listId'] == 0 || $parameters['elementId'] == 0)
            return false;
 
        $userPermission = \CListPermissions::CheckAccess(
            $USER,
            $parameters["IBLOCK_TYPE_ID"],
            $parameters['listId']
        );
        if($userPermission < 0)
        {
            return false;
        }
        else if(   $userPermission < \CListPermissions::CAN_READ
                && !\CIBlockElementRights::UserHasRightTo($parameters['listId'], $parameters['elementId'], "element_read"))
        {
            return false;
        }
 
        return true;
    }
 
}