<?php /** * TActiveRadioButton class file. * * @author Wei Zhuo <weizhuo[at]gamil[dot]com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2006 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Id$ * @package System.Web.UI.ActiveControls */ /** * TActiveRadioButton class. * * The active control counter part to radio button. The {@link setAutoPostBack AutoPostBack} * property is set to true by default. Thus, when the radio button is clicked a * {@link onCallback OnCallback} event is raise after {@link OnCheckedChanged} event. * * The {@link setText Text} and {@link setChecked Checked} properties can be * changed during a callback. * * The {@link setGroupName GroupName} property may <b>NOT</b> be changed * during callback because the client-side <tt>name</tt> attribute is read-only * and can not be changed using javascript. * * @author Wei Zhuo <weizhuo[at]gmail[dot]com> * @version $Id$ * @package System.Web.UI.ActiveControls * @since 3.1 */ class TActiveRadioButton extends TRadioButton implements IActiveControl, ICallbackEventHandler { /** * 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)); $this->setAutoPostBack(true); } /** * @return TBaseActiveCallbackControl standard callback control options. */ public function getActiveControl() { return $this->getAdapter()->getBaseActiveControl(); } /** * @return TCallbackClientSide client side request options. */ public function getClientSide() { return $this->getAdapter()->getBaseActiveControl()->getClientSide(); } /** * Raises the callback event. This method is required by {@link * ICallbackEventHandler} interface. * This method is mainly used by framework and control developers. * @param TCallbackEventParameter the event parameter */ public function raiseCallbackEvent($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, $param); } /** * Updates the button text on the client-side if the * {@link setEnableUpdate EnableUpdate} property is set to true. * @param string caption of the button */ public function setText($value) { parent::setText($value); if($this->getActiveControl()->canUpdateClientSide()) $this->getPage()->getCallbackClient()->update( $this->getDefaultLabelID(), $value); } /** * Checks the radio button. * Updates radio button checked state on the client-side if the * {@link setEnableUpdate EnableUpdate} property is set to true. * @param boolean whether the radio button is to be checked or not. */ public function setChecked($value) { $value = TPropertyValue::ensureBoolean($value); parent::setChecked($value); if($value && $this->getActiveControl()->canUpdateClientSide()) $this->getPage()->getCallbackClient()->check($this, $value); } /** * Override parent implementation, no javascript is rendered here instead * the javascript required for active control is registered in {@link addAttributesToRender}. */ protected function renderClientControlScript($writer) { } /** * Ensure that the ID attribute is rendered and registers the javascript code * for initializing the active control. */ protected function renderInputTag($writer,$clientID,$onclick) { parent::renderInputTag($writer,$clientID,$onclick); $writer->addAttribute('id',$this->getClientID()); $this->getActiveControl()->registerCallbackClientScript( $this->getClientClassName(), $this->getPostBackOptions()); } /** * @return string corresponding javascript class name for this TActiveRadioButton. */ protected function getClientClassName() { return 'Prado.WebUI.TActiveRadioButton'; } /** * Overrides parent implementation to ensure label has ID. * @return TMap list of attributes to be rendered for label beside the radio button */ public function getLabelAttributes() { $attributes = parent::getLabelAttributes(); $attributes['id'] = $this->getDefaultLabelID(); return $attributes; } /** * Renders a label beside the radio button. * @param THtmlWriter the writer for the rendering purpose * @param string radio button id * @param string label text */ protected function renderLabel($writer,$clientID,$text) { $writer->addAttribute('id', $this->getDefaultLabelID()); parent::renderLabel($writer, $clientID, $text); } /** * @return string radio button label ID; */ protected function getDefaultLabelID() { if($attributes=$this->getViewState('LabelAttributes',null)) return $this->getLabelAttributes()->itemAt('id'); else return $this->getClientID().'_label'; } } ?>