<?php /** * TActiveHiddenField class file. * * @author Carl G. Mathisen <carlgmathisen@gmail.com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2008 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Id$ * @package System.Web.UI.ActiveControls */ Prado::using('System.Web.UI.ActiveControls.TActiveControlAdapter'); /** * TActiveHiddenField class * * TActiveHiddenField displays a hidden input field on a Web page. * The value of the input field can be accessed via {@link getValue Value} property. * * @author Carl G. Mathisen <carlgmathisen@gmail.com> * @package System.Web.UI.ActiveControls * @since 3.1 */ class TActiveHiddenField extends THiddenField implements ICallbackEventHandler, IActiveControl { /** * Creates a new callback control, sets the adapter to * TActiveControlAdapter. If you override this class, be sure to set the * adapter appropriately by, for example, by calling this constructor. */ public function __construct() { parent::__construct(); $this->setAdapter(new TActiveControlAdapter($this)); } /** * @return TBaseActiveCallbackControl standard callback control options. */ public function getActiveControl() { return $this->getAdapter()->getBaseActiveControl(); } /** * @return TCallbackClientSide client side request options. */ public function getClientSide() { return $this->getAdapter()->getBaseActiveControl()->getClientSide(); } /** * Client-side Value property can only be updated after the OnLoad stage. * @param string text content for the hidden field */ public function setValue($value) { parent::setValue($value); if($this->getActiveControl()->canUpdateClientSide() && $this->getHasLoadedPostData()) $this->getPage()->getCallbackClient()->setValue($this, $value); } /** * Raises the callback event. This method is required by {@link * ICallbackEventHandler} interface. * This method is mainly used by framework and control developers. * @param TCallbackEventParameter the event parameter */ public function raiseCallbackEvent($param) { $this->onCallback($param); } /** * This method is invoked when a callback is requested. The method raises * 'OnCallback' event to fire up the event handlers. If you override this * method, be sure to call the parent implementation so that the event * handler can be invoked. * @param TCallbackEventParameter event parameter to be passed to the event handlers */ public function onCallback($param) { $this->raiseEvent('OnCallback', $this, $param); } /** * Gets the name of the javascript class responsible for performing postback for this control. * This method overrides the parent implementation. * @return string the javascript class name */ protected function getClientClassName() { return 'Prado.WebUI.TActiveHiddenField'; } /** * Override parent implementation, no javascript is rendered here instead * the javascript required for active control is registered in {@link addAttributesToRender}. */ protected function renderClientControlScript($writer) { } /** * Ensure that the ID attribute is rendered and registers the javascript code * for initializing the active control. */ protected function addAttributesToRender($writer) { parent::addAttributesToRender($writer); $writer->addAttribute('id',$this->getClientID()); $this->getActiveControl()->registerCallbackClientScript( $this->getClientClassName(), $this->getPostBackOptions()); } }