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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

jimport('joomla.form.formrule');
/**
 * 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   object  $element  The JXMLElement 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   object  $input    An optional JRegistry object with the entire data set to validate
	 *                            against the entire form.
	 * @param   object  $form     The form object for which the field is being tested.
	 *
	 * @return  boolean  True if the value is valid, false otherwise.
	 *
	 * @since   11.1
	 * @throws  JException on invalid rule.
	 */
	public function test(& $element, $value, $group = null, & $input = null, & $form = null)
	{
		// Check each value and return true if we get a match
		foreach ($element->option as $option) {
			if ($value == $option->getAttribute('value')) {
				return true;
			}
		}
		return false;
	}
}