/** * Returns Wygwam's themes folder URL. * * @static * @return string */ public static function theme_url() { if (!isset(self::$_theme_url)) { $theme_folder_url = defined('URL_THIRD_THEMES') ? URL_THIRD_THEMES : get_instance()->config->slash_item('theme_folder_url') . 'third_party/'; self::$_theme_url = $theme_folder_url . 'wygwam/'; } return self::$_theme_url; }