options.php

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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('JPATH_PLATFORM') or die;

/**
 * Form Rule class for the Joomla Platform.
 * Requires the value entered be one of the options in a field of type="list"
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormRuleOptions extends JFormRule
{
        /**
         * Method to test the value.
         *
         * @param   SimpleXMLElement  $element  The SimpleXMLElement object representing the <field /> tag for the form field object.
         * @param   mixed             $value    The form field value to validate.
         * @param   string            $group    The field name group control value. This acts as as an array container for the field.
         *                                      For example if the field has name="foo" and the group value is set to "bar" then the
         *                                      full field name would end up being "bar[foo]".
         * @param   JRegistry         $input    An optional JRegistry object with the entire data set to validate against the entire form.
         * @param   JForm             $form     The form object for which the field is being tested.
         *
         * @return  boolean  True if the value is valid, false otherwise.
         *
         * @since   11.1
         */
        public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null)
        {
                // Check each value and return true if we get a match
                foreach ($element->option as $option)
                {
                        if ($value == (string) $option->attributes()->value)
                        {
                                return true;
                        }
                }
                return false;
        }
}