<?php /** * TPageStatePersister class file * * @author Qiang Xue <qiang.xue@gmail.com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Id$ * @package System.Web.UI */ /** * TPageStatePersister class * * TPageStatePersister implements a page state persistent method based on * form hidden fields. * * Since page state can be very big for complex pages, consider using * alternative persisters, such as {@link TSessionPageStatePersister}, * which store page state on the server side and thus reduce the network * traffic for transmitting bulky page state. * * @author Qiang Xue <qiang.xue@gmail.com> * @version $Id$ * @package System.Web.UI * @since 3.0 */ class TPageStatePersister extends TComponent implements IPageStatePersister { private $_page; /** * @return TPage the page that this persister works for */ public function getPage() { return $this->_page; } /** * @param TPage the page that this persister works for */ public function setPage(TPage $page) { $this->_page=$page; } /** * Saves state in hidden fields. * @param mixed state to be stored */ public function save($state) { $this->_page->setClientState(TPageStateFormatter::serialize($this->_page,$state)); } /** * Loads page state from hidden fields. * @return mixed the restored state * @throws THttpException if page state is corrupted */ public function load() { if(($data=TPageStateFormatter::unserialize($this->_page,$this->_page->getRequestClientState()))!==null) return $data; else throw new THttpException(400,'pagestatepersister_pagestate_corrupted'); } } ?>