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libraries/joomla/form/rule/rules.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
+ */
+
+defined('JPATH_PLATFORM') or die;
+
+/**
+ * Form Rule class for the Joomla Platform.
+ *
+ * @package     Joomla.Platform
+ * @subpackage  Form
+ * @since       11.1
+ */
+class JFormRuleRules 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)
+	{
+		// Get the possible field actions and the ones posted to validate them.
+		$fieldActions = self::getFieldActions($element);
+		$valueActions = self::getValueActions($value);
+
+		// Make sure that all posted actions are in the list of possible actions for the field.
+		foreach ($valueActions as $action)
+		{
+			if (!in_array($action, $fieldActions))
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Method to get the list of permission action names from the form field value.
+	 *
+	 * @param   mixed  $value  The form field value to validate.
+	 *
+	 * @return  array  A list of permission action names from the form field value.
+	 *
+	 * @since   11.1
+	 */
+	protected function getValueActions($value)
+	{
+		$actions = array();
+
+		// Iterate over the asset actions and add to the actions.
+		foreach ((array) $value as $name => $rules)
+		{
+			$actions[] = $name;
+		}
+
+		return $actions;
+	}
+
+	/**
+	 * Method to get the list of possible permission action names for the form field.
+	 *
+	 * @param   SimpleXMLElement  $element  The SimpleXMLElement object representing the <field /> tag for the
+	 *                                      form field object.
+	 *
+	 * @return  array   A list of permission action names from the form field element definition.
+	 *
+	 * @since   11.1
+	 */
+	protected function getFieldActions(SimpleXMLElement $element)
+	{
+		$actions = array();
+
+		// Initialise some field attributes.
+		$section = $element['section'] ? (string) $element['section'] : '';
+		$component = $element['component'] ? (string) $element['component'] : '';
+
+		// Get the asset actions for the element.
+		$elActions = JAccess::getActions($component, $section);
+
+		// Iterate over the asset actions and add to the actions.
+		foreach ($elActions as $item)
+		{
+			$actions[] = $item->name;
+		}
+
+		// Iterate over the children and add to the actions.
+		foreach ($element->children() as $el)
+		{
+			if ($el->getName() == 'action')
+			{
+				$actions[] = (string) $el['name'];
+			}
+		}
+
+		return $actions;
+	}
+}