theme.php

См. документацию.

<?
 
namespace Bitrix\Main\UI\Filter;
 

class Theme
{
    const DEFAULT_FILTER = "DEFAULT";
    const BORDER = "BORDER";
    const ROUNDED = "ROUNDED";
    const LIGHT = "LIGHT";
    const MUTED = "MUTED";
    const SPACES = "SPACES";
    const AIR = "AIR";

    public static function getList()
    {
        $reflection = new \ReflectionClass(__CLASS__);
        return $reflection->getConstants();
    }
    public static function getList() {…}
}
class Theme {…};