public function valid()
 {
     if (!defined('WPDDL_GENERAL_OPTIONS')) {
         return false;
     }
     $cpt = Types_Helper_Condition::get_post_type();
     $layouts = get_option(WPDDL_GENERAL_OPTIONS, array());
     if (!array_key_exists('layouts_cpt_' . $cpt->name, $layouts)) {
         return false;
     }
     self::$layout_id = $layouts['layouts_cpt_' . $cpt->name];
     return true;
 }