Subversion-Projekte lars-tiefland.prado

<?php
/**
 * TRadioButtonList class file
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2008 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id: TRadioButtonList.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Web.UI.WebControls
 */

/**
 * Includes TRadioButton class
 */
Prado::using('System.Web.UI.WebControls.TRadioButton');
/**
 * Includes TCheckBoxList class
 */
Prado::using('System.Web.UI.WebControls.TCheckBoxList');

/**
 * TRadioButtonList class
 *
 * TRadioButtonList displays a list of radiobuttons on a Web page.
 *
 * TRadioButtonList inherits all properties and events of {@link TCheckBoxList}.
 * Each TRadioButtonList displays one group of radiobuttons, i.e., at most
 * one radiobutton can be selected at a time.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @version $Id: TRadioButtonList.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Web.UI.WebControls
 * @since 3.0
 */
class TRadioButtonList extends TCheckBoxList
{
        /**
         * @return boolean whether this control supports multiple selection. Always false for radiobutton list.
         */
        protected function getIsMultiSelect()
        {
                return false;
        }

        /**
         * Creates a control used for repetition (used as a template).
         * @return TControl the control to be repeated
         */
        protected function createRepeatedControl()
        {
                return new TRadioButton;
        }

        /**
         * Loads user input data.
         * This method is primarly used by framework developers.
         * @param string the key that can be used to retrieve data from the input data collection
         * @param array the input data collection
         * @return boolean whether the data of the control has been changed
         */
        public function loadPostData($key,$values)
        {
                $value=isset($values[$key])?$values[$key]:'';
                $oldSelection=$this->getSelectedIndex();
                $this->ensureDataBound();
                foreach($this->getItems() as $index=>$item)
                {
                        if($item->getEnabled() && $item->getValue()===$value)
                        {
                                if($index===$oldSelection)
                                        return false;
                                else
                                {
                                        $this->setSelectedIndex($index);
                                        return true;
                                }
                        }
                }
                return false;
        }

        /**
         * @throws TNotSupportedException if this method is invoked
         */
        public function setSelectedIndices($indices)
        {
                throw new TNotSupportedException('radiobuttonlist_selectedindices_unsupported');
        }

        /**
         * 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.TRadioButtonList';
        }
}