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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP version 4.0                                                      |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license,       |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Adam Daniel <adaniel1@eesus.jnj.com>                        |
// |          Alexey Borzov <borz_off@cs.msu.su>                          |
// |          Bertrand Mansion <bmansion@mamasam.com>                     |
// +----------------------------------------------------------------------+
//
// $Id$

/**
* Registers rule objects and uses them for validation
*
*/
class HTML_QuickForm_RuleRegistry
{
    /**
     * Array containing references to used rules
     * @var     array
     * @access  private
     */
    var $_rules = array();


    /**
     * Returns a singleton of HTML_QuickForm_RuleRegistry
     *
     * Usually, only one RuleRegistry object is needed, this is the reason
     * why it is recommended to use this method to get the validation object.
     *
     * @access    public
     * @static
     * @return    object    Reference to the HTML_QuickForm_RuleRegistry singleton
     */
    static function &singleton()
    {
        static $obj;
        if (!isset($obj)) {
            $obj = new HTML_QuickForm_RuleRegistry();
        }
        return $obj;
    } // end func singleton

    /**
     * Registers a new validation rule
     *
     * In order to use a custom rule in your form, you need to register it
     * first. For regular expressions, one can directly use the 'regex' type
     * rule in addRule(), this is faster than registering the rule.
     *
     * Functions and methods can be registered. Use the 'function' type.
     * When registering a method, specify the class name as second parameter.
     *
     * You can also register an HTML_QuickForm_Rule subclass with its own
     * validate() method.
     *
     * @param     string    $ruleName   Name of validation rule
     * @param     string    $type       Either: 'regex', 'function' or null
     * @param     string    $data1      Name of function, regular expression or
     *                                  HTML_QuickForm_Rule object class name
     * @param     string    $data2      Object parent of above function or HTML_QuickForm_Rule file path
     * @access    public
     * @return    void
     */
    function registerRule($ruleName, $type, $data1, $data2 = null)
    {
< $type = strtolower($type);
> $type = strtolower($type ?? '');
if ($type == 'regex') { // Regular expression $rule =& $this->getRule('regex'); $rule->addData($ruleName, $data1); $GLOBALS['_HTML_QuickForm_registered_rules'][$ruleName] = $GLOBALS['_HTML_QuickForm_registered_rules']['regex']; } elseif ($type == 'function' || $type == 'callback') { // Callback function $rule =& $this->getRule('callback'); $rule->addData($ruleName, $data1, $data2, 'function' == $type); $GLOBALS['_HTML_QuickForm_registered_rules'][$ruleName] = $GLOBALS['_HTML_QuickForm_registered_rules']['callback']; } elseif (is_object($data1)) { // An instance of HTML_QuickForm_Rule $this->_rules[strtolower(get_class($data1))] = $data1; $GLOBALS['_HTML_QuickForm_registered_rules'][$ruleName] = array(strtolower(get_class($data1)), null); } else { // Rule class name $GLOBALS['_HTML_QuickForm_registered_rules'][$ruleName] = array(strtolower($data1), $data2); } } // end func registerRule /** * Returns a reference to the requested rule object * * @param string $ruleName Name of the requested rule * @access public * @return object */ function &getRule($ruleName) { list($class, $path) = $GLOBALS['_HTML_QuickForm_registered_rules'][$ruleName]; if (!isset($this->_rules[$class])) { if (!empty($path)) { include_once($path); } $this->_rules[$class] = new $class(); } $this->_rules[$class]->setName($ruleName); return $this->_rules[$class]; } // end func getRule /** * Performs validation on the given values * * @param string $ruleName Name of the rule to be used * @param mixed $values Can be a scalar or an array of values * to be validated * @param mixed $options Options used by the rule * @param mixed $multiple Whether to validate an array of values altogether * @access public * @return mixed true if no error found, int of valid values (when an array of values is given) or false if error */ function validate($ruleName, $values, $options = null, $multiple = false) { $rule =& $this->getRule($ruleName); if (is_array($values) && !$multiple) { $result = 0; foreach ($values as $value) { if ($rule->validate($value, $options) === true) { $result++; } } return ($result == 0) ? false : $result; } else { return $rule->validate($values, $options); } } // end func validate /** * Returns the validation test in javascript code * * @param mixed Element(s) the rule applies to * @param string Element name, in case $element is not array * @param array Rule data * @access public * @return string JavaScript for the rule */ function getValidationScript(&$element, $elementName, $ruleData) { $reset = (isset($ruleData['reset'])) ? $ruleData['reset'] : false; $rule =& $this->getRule($ruleData['type']); if (!is_array($element)) { list($jsValue, $jsReset) = $this->_getJsValue($element, $elementName, $reset, null); } else { $jsValue = " value = new Array();\n"; $jsReset = ''; for ($i = 0; $i < count($element); $i++) { list($tmp_value, $tmp_reset) = $this->_getJsValue($element[$i], $element[$i]->getName(), $reset, $i); $jsValue .= "\n" . $tmp_value; $jsReset .= $tmp_reset; } } $jsField = isset($ruleData['group'])? $ruleData['group']: $elementName; list ($jsPrefix, $jsCheck) = $rule->getValidationScript($ruleData['format']); if (!isset($ruleData['howmany'])) { $js = $jsValue . "\n" . $jsPrefix . " if (" . str_replace('{jsVar}', 'value', $jsCheck) . " && !errFlag['{$jsField}']) {\n" . " errFlag['{$jsField}'] = true;\n" . " _qfMsg = _qfMsg + '\\n - {$ruleData['message']}';\n" . $jsReset . " }\n"; } else { $js = $jsValue . "\n" . $jsPrefix . " var res = 0;\n" . " for (var i = 0; i < value.length; i++) {\n" . " if (!(" . str_replace('{jsVar}', 'value[i]', $jsCheck) . ")) {\n" . " res++;\n" . " }\n" . " }\n" . " if (res < {$ruleData['howmany']} && !errFlag['{$jsField}']) {\n" . " errFlag['{$jsField}'] = true;\n" . " _qfMsg = _qfMsg + '\\n - {$ruleData['message']}';\n" . $jsReset . " }\n"; } return $js; } // end func getValidationScript /** * Returns JavaScript to get and to reset the element's value * * @access private * @param object HTML_QuickForm_element element being processed * @param string element's name * @param bool whether to generate JavaScript to reset the value * @param integer value's index in the array (only used for multielement rules) * @return array first item is value javascript, second is reset */ function _getJsValue(&$element, $elementName, $reset = false, $index = null) { $jsIndex = isset($index)? '[' . $index . ']': ''; $tmp_reset = $reset? " var field = frm.elements['$elementName'];\n": ''; if (is_a($element, 'html_quickform_group')) { $value = " _qfGroups['{$elementName}'] = {"; $elements =& $element->getElements(); for ($i = 0, $count = count($elements); $i < $count; $i++) { $append = (($elements[$i]->getType() == 'select' || $element->getType() == 'autocomplete') && $elements[$i]->getMultiple())? '[]': ''; $value .= "'" . $element->getElementName($i) . $append . "': true" . ($i < $count - 1? ', ': ''); } $value .= "};\n" . " value{$jsIndex} = new Array();\n" . " var valueIdx = 0;\n" . " for (var i = 0; i < frm.elements.length; i++) {\n" . " var _element = frm.elements[i];\n" . " if (_element.name in _qfGroups['{$elementName}']) {\n" . " switch (_element.type) {\n" . " case 'checkbox':\n" . " case 'radio':\n" . " if (_element.checked) {\n" . " value{$jsIndex}[valueIdx++] = _element.value;\n" . " }\n" . " break;\n" . " case 'select-one':\n" . " if (-1 != _element.selectedIndex) {\n" . " value{$jsIndex}[valueIdx++] = _element.options[_element.selectedIndex].value;\n" . " }\n" . " break;\n" . " case 'select-multiple':\n" . " var tmpVal = new Array();\n" . " var tmpIdx = 0;\n" . " for (var j = 0; j < _element.options.length; j++) {\n" . " if (_element.options[j].selected) {\n" . " tmpVal[tmpIdx++] = _element.options[j].value;\n" . " }\n" . " }\n" . " if (tmpIdx > 0) {\n" . " value{$jsIndex}[valueIdx++] = tmpVal;\n" . " }\n" . " break;\n" . " default:\n" . " value{$jsIndex}[valueIdx++] = _element.value;\n" . " }\n" . " }\n" . " }\n"; if ($reset) { $tmp_reset = " for (var i = 0; i < frm.elements.length; i++) {\n" . " var _element = frm.elements[i];\n" . " if (_element.name in _qfGroups['{$elementName}']) {\n" . " switch (_element.type) {\n" . " case 'checkbox':\n" . " case 'radio':\n" . " _element.checked = _element.defaultChecked;\n" . " break;\n" . " case 'select-one':\n" . " case 'select-multiple':\n" . " for (var j = 0; j < _element.options.length; j++) {\n" . " _element.options[j].selected = _element.options[j].defaultSelected;\n" . " }\n" . " break;\n" . " default:\n" . " _element.value = _element.defaultValue;\n" . " }\n" . " }\n" . " }\n"; } } elseif ($element->getType() == 'select' || $element->getType() == 'autocomplete') { if ($element->getMultiple()) { $elementName .= '[]'; $value = " value{$jsIndex} = new Array();\n" . " var valueIdx = 0;\n" . " for (var i = 0; i < frm.elements['{$elementName}'].options.length; i++) {\n" . " if (frm.elements['{$elementName}'].options[i].selected) {\n" . " value{$jsIndex}[valueIdx++] = frm.elements['{$elementName}'].options[i].value;\n" . " }\n" . " }\n"; } else { $value = " value{$jsIndex} = frm.elements['{$elementName}'].selectedIndex == -1? '': frm.elements['{$elementName}'].options[frm.elements['{$elementName}'].selectedIndex].value;\n"; } if ($reset) { $tmp_reset .= " for (var i = 0; i < field.options.length; i++) {\n" . " field.options[i].selected = field.options[i].defaultSelected;\n" . " }\n"; } } elseif ($element->getType() == 'advcheckbox') { $value = " value{$jsIndex} = frm.elements['$elementName'][1].checked ?" . " frm.elements['$elementName'][1].value : frm.elements['$elementName'][0].value;\n"; $tmp_reset .= $reset ? " field[1].checked = field[1].defaultChecked;\n" : ''; } elseif ($element->getType() == 'checkbox') { $value = " value{$jsIndex} = frm.elements['$elementName'].checked? '1': '';\n"; $tmp_reset .= $reset ? " field.checked = field.defaultChecked;\n" : ''; } elseif ($element->getType() == 'radio') { $value = " value{$jsIndex} = '';\n" . // Fix for bug #5644 " var els = 'length' in frm.elements['$elementName']? frm.elements['$elementName']: [ frm.elements['$elementName'] ];\n" . " for (var i = 0; i < els.length; i++) {\n" . " if (els[i].checked) {\n" . " value{$jsIndex} = els[i].value;\n" . " }\n" . " }"; if ($reset) { $tmp_reset .= " for (var i = 0; i < field.length; i++) {\n" . " field[i].checked = field[i].defaultChecked;\n" . " }"; } } else { $value = " value{$jsIndex} = frm.elements['$elementName'].value;"; $tmp_reset .= ($reset) ? " field.value = field.defaultValue;\n" : ''; } return array($value, $tmp_reset); } } // end class HTML_QuickForm_RuleRegistry ?>