protected function _init() { if (IfwPsn_Wp_Proxy_Screen::isLoadedCurrentScreen()) { $this->_pm->getLogger()->error('Screen option must be initialized before page load.'); } $this->_type = $this->getType(); IfwPsn_Wp_Proxy_Filter::addSetScreenOption(array($this, 'setScreenOptionCallback'), 10, 3); IfwPsn_Wp_Proxy_Action::addCurrentScreen(array($this, 'registerOption')); }