public static function get_instance() { if (!self::$_instance) { self::$_instance = new self(); } return self::$_instance; }
protected function __construct() { parent::__construct(); $this->elementName = $this->get_element_name(); $this->db_key = 'upfront_' . get_stylesheet() . '_' . $this->elementName . '_presets'; $registry = Upfront_PresetServer_Registry::get_instance(); $registry->set($this->elementName, $this); }