2 /* vim: set expandtab tabstop=4 shiftwidth=4: */
3 // +----------------------------------------------------------------------+
5 // +----------------------------------------------------------------------+
6 // | Copyright (c) 1997-2003 The PHP Group |
7 // +----------------------------------------------------------------------+
8 // | This source file is subject to version 2.0 of the PHP license, |
9 // | that is bundled with this package in the file LICENSE, and is |
10 // | available at through the world-wide-web at |
11 // | http://www.php.net/license/2_02.txt. |
12 // | If you did not receive a copy of the PHP license and are unable to |
13 // | obtain it through the world-wide-web, please send a note to |
14 // | license@php.net so we can mail you a copy immediately. |
15 // +----------------------------------------------------------------------+
16 // | Authors: Adam Daniel <adaniel1@eesus.jnj.com> |
17 // | Bertrand Mansion <bmansion@mamasam.com> |
18 // +----------------------------------------------------------------------+
22 require_once('PEAR.php');
23 require_once('HTML/Common.php');
25 $GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES'] =
27 'group' =>array('HTML/QuickForm/group.php','HTML_QuickForm_group'),
28 'hidden' =>array('HTML/QuickForm/hidden.php','HTML_QuickForm_hidden'),
29 'reset' =>array('HTML/QuickForm/reset.php','HTML_QuickForm_reset'),
30 'checkbox' =>array('HTML/QuickForm/checkbox.php','HTML_QuickForm_checkbox'),
31 'file' =>array('HTML/QuickForm/file.php','HTML_QuickForm_file'),
32 'image' =>array('HTML/QuickForm/image.php','HTML_QuickForm_image'),
33 'password' =>array('HTML/QuickForm/password.php','HTML_QuickForm_password'),
34 'radio' =>array('HTML/QuickForm/radio.php','HTML_QuickForm_radio'),
35 'button' =>array('HTML/QuickForm/button.php','HTML_QuickForm_button'),
36 'submit' =>array('HTML/QuickForm/submit.php','HTML_QuickForm_submit'),
37 'select' =>array('HTML/QuickForm/select.php','HTML_QuickForm_select'),
38 'hiddenselect' =>array('HTML/QuickForm/hiddenselect.php','HTML_QuickForm_hiddenselect'),
39 'text' =>array('HTML/QuickForm/text.php','HTML_QuickForm_text'),
40 'textarea' =>array('HTML/QuickForm/textarea.php','HTML_QuickForm_textarea'),
41 'link' =>array('HTML/QuickForm/link.php','HTML_QuickForm_link'),
42 'advcheckbox' =>array('HTML/QuickForm/advcheckbox.php','HTML_QuickForm_advcheckbox'),
43 'date' =>array('HTML/QuickForm/date.php','HTML_QuickForm_date'),
44 'static' =>array('HTML/QuickForm/static.php','HTML_QuickForm_static'),
45 'header' =>array('HTML/QuickForm/header.php', 'HTML_QuickForm_header'),
46 'html' =>array('HTML/QuickForm/html.php', 'HTML_QuickForm_html'),
47 'hierselect' =>array('HTML/QuickForm/hierselect.php', 'HTML_QuickForm_hierselect'),
48 'autocomplete' =>array('HTML/QuickForm/autocomplete.php', 'HTML_QuickForm_autocomplete'),
49 'xbutton' =>array('HTML/QuickForm/xbutton.php','HTML_QuickForm_xbutton')
52 $GLOBALS['_HTML_QuickForm_registered_rules'] = array(
53 'required' => array('html_quickform_rule_required', 'HTML/QuickForm/Rule/Required.php'),
54 'maxlength' => array('html_quickform_rule_range', 'HTML/QuickForm/Rule/Range.php'),
55 'minlength' => array('html_quickform_rule_range', 'HTML/QuickForm/Rule/Range.php'),
56 'rangelength' => array('html_quickform_rule_range', 'HTML/QuickForm/Rule/Range.php'),
57 'email' => array('html_quickform_rule_email', 'HTML/QuickForm/Rule/Email.php'),
58 'regex' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
59 'lettersonly' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
60 'alphanumeric' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
61 'numeric' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
62 'nopunctuation' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
63 'nonzero' => array('html_quickform_rule_regex', 'HTML/QuickForm/Rule/Regex.php'),
64 'callback' => array('html_quickform_rule_callback', 'HTML/QuickForm/Rule/Callback.php'),
65 'compare' => array('html_quickform_rule_compare', 'HTML/QuickForm/Rule/Compare.php')
71 * Error codes for the QuickForm interface, which will be mapped to textual messages
72 * in the QuickForm::errorMessage() function. If you are to add a new error code, be
73 * sure to add the textual messages to the QuickForm::errorMessage() function as well
76 define('QUICKFORM_OK', 1);
77 define('QUICKFORM_ERROR', -1);
78 define('QUICKFORM_INVALID_RULE', -2);
79 define('QUICKFORM_NONEXIST_ELEMENT', -3);
80 define('QUICKFORM_INVALID_FILTER', -4);
81 define('QUICKFORM_UNREGISTERED_ELEMENT', -5);
82 define('QUICKFORM_INVALID_ELEMENT_NAME', -6);
83 define('QUICKFORM_INVALID_PROCESS', -7);
84 define('QUICKFORM_DEPRECATED', -8);
85 define('QUICKFORM_INVALID_DATASOURCE', -9);
90 * Create, validate and process HTML forms
92 * @author Adam Daniel <adaniel1@eesus.jnj.com>
93 * @author Bertrand Mansion <bmansion@mamasam.com>
97 class HTML_QuickForm extends HTML_Common {
101 * Array containing the form fields
106 var $_elements = array();
109 * Array containing element name to index map
114 var $_elementIndex = array();
117 * Array containing indexes of duplicate elements
122 var $_duplicateIndex = array();
125 * Array containing required field IDs
130 var $_required = array();
133 * Prefix message in javascript alert if error
138 var $_jsPrefix = 'Invalid information entered.';
141 * Postfix message in javascript alert if error
146 var $_jsPostfix = 'Please correct these fields.';
149 * Datasource object implementing the informal
150 * datasource protocol
158 * Array of default form values
163 var $_defaultValues = array();
166 * Array of constant form values
171 var $_constantValues = array();
174 * Array of submitted form values
179 var $_submitValues = array();
182 * Array of submitted form files
187 var $_submitFiles = array();
190 * Value for maxfilesize hidden element if form contains file input
195 var $_maxFileSize = 1048576; // 1 Mb = 1048576
198 * Flag to know if all fields are frozen
203 var $_freezeAll = false;
206 * Array containing the form rules
211 var $_rules = array();
214 * Form rules, global variety
218 var $_formRules = array();
221 * Array containing the validation errors
226 var $_errors = array();
229 * Note for required fields in the form
234 var $_requiredNote = '<span style="font-size:80%; color:#ff0000;">*</span><span style="font-size:80%;"> denotes required field</span>';
237 * Whether the form was submitted
241 var $_flagSubmitted = false;
248 * @param string $formName Form's name.
249 * @param string $method (optional)Form's method defaults to 'POST'
250 * @param string $action (optional)Form's action
251 * @param string $target (optional)Form's target defaults to '_self'
252 * @param mixed $attributes (optional)Extra attributes for <form> tag
253 * @param bool $trackSubmit (optional)Whether to track if the form was submitted by adding a special hidden field
256 function HTML_QuickForm($formName='', $method='post', $action='', $target='', $attributes=null, $trackSubmit = false)
258 HTML_Common::HTML_Common($attributes);
259 $method = (strtoupper($method) == 'GET') ? 'get' : 'post';
260 $action = ($action == '') ? $_SERVER['PHP_SELF'] : $action;
261 $target = empty($target) ? array() : array('target' => $target);
262 $attributes = array('action'=>$action, 'method'=>$method, 'name'=>$formName, 'id'=>$formName) + $target;
263 $this->updateAttributes($attributes);
264 if (!$trackSubmit || isset($_REQUEST['_qf__' . $formName])) {
265 if (1 == get_magic_quotes_gpc()) {
266 $this->_submitValues = ('get' == $method? $_GET: $_POST); // we already eliminated magic quotes in moodle setup.php
267 foreach ($_FILES as $keyFirst => $valFirst) {
268 foreach ($valFirst as $keySecond => $valSecond) {
269 if ('name' == $keySecond) {
270 $this->_submitFiles[$keyFirst][$keySecond] = $valSecond; // we already eliminated magic quotes in moodle setup.php
272 $this->_submitFiles[$keyFirst][$keySecond] = $valSecond;
277 $this->_submitValues = 'get' == $method? $_GET: $_POST;
278 $this->_submitFiles = $_FILES;
280 $this->_flagSubmitted = count($this->_submitValues) > 0 || count($this->_submitFiles) > 0;
283 unset($this->_submitValues['_qf__' . $formName]);
284 $this->addElement('hidden', '_qf__' . $formName, null);
286 if (preg_match('/^([0-9]+)([a-zA-Z]*)$/', ini_get('upload_max_filesize'), $matches)) {
287 // see http://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
288 switch (strtoupper($matches['2'])) {
290 $this->_maxFileSize = $matches['1'] * 1073741824;
293 $this->_maxFileSize = $matches['1'] * 1048576;
296 $this->_maxFileSize = $matches['1'] * 1024;
299 $this->_maxFileSize = $matches['1'];
308 * Returns the current API version
314 function apiVersion()
317 } // end func apiVersion
320 // {{{ registerElementType()
323 * Registers a new element type
325 * @param string $typeName Name of element type
326 * @param string $include Include path for element type
327 * @param string $className Element class name
332 static function registerElementType($typeName, $include, $className)
334 $GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES'][strtolower($typeName)] = array($include, $className);
335 } // end func registerElementType
338 // {{{ registerRule()
341 * Registers a new validation rule
343 * @param string $ruleName Name of validation rule
344 * @param string $type Either: 'regex', 'function' or 'rule' for an HTML_QuickForm_Rule object
345 * @param string $data1 Name of function, regular expression or HTML_QuickForm_Rule classname
346 * @param string $data2 Object parent of above function or HTML_QuickForm_Rule file path
351 static function registerRule($ruleName, $type, $data1, $data2 = null)
353 include_once('HTML/QuickForm/RuleRegistry.php');
354 $registry =& HTML_QuickForm_RuleRegistry::singleton();
355 $registry->registerRule($ruleName, $type, $data1, $data2);
356 } // end func registerRule
359 // {{{ elementExists()
362 * Returns true if element is in the form
364 * @param string $element form name of element to check
369 function elementExists($element=null)
371 return isset($this->_elementIndex[$element]);
372 } // end func elementExists
375 // {{{ setDatasource()
378 * Sets a datasource object for this form object
380 * Datasource default and constant values will feed the QuickForm object if
381 * the datasource implements defaultValues() and constantValues() methods.
383 * @param object $datasource datasource object implementing the informal datasource protocol
384 * @param mixed $defaultsFilter string or array of filter(s) to apply to default values
385 * @param mixed $constantsFilter string or array of filter(s) to apply to constants values
390 function setDatasource(&$datasource, $defaultsFilter = null, $constantsFilter = null)
392 if (is_object($datasource)) {
393 $this->_datasource =& $datasource;
394 if (is_callable(array($datasource, 'defaultValues'))) {
395 $this->setDefaults($datasource->defaultValues($this), $defaultsFilter);
397 if (is_callable(array($datasource, 'constantValues'))) {
398 $this->setConstants($datasource->constantValues($this), $constantsFilter);
401 return self::raiseError(null, QUICKFORM_INVALID_DATASOURCE, null, E_USER_WARNING, "Datasource is not an object in QuickForm::setDatasource()", 'HTML_QuickForm_Error', true);
403 } // end func setDatasource
409 * Initializes default form values
411 * @param array $defaultValues values used to fill the form
412 * @param mixed $filter (optional) filter(s) to apply to all default values
417 function setDefaults($defaultValues = null, $filter = null)
419 if (is_array($defaultValues)) {
420 if (isset($filter)) {
421 if (is_array($filter) && (2 != count($filter) || !is_callable($filter))) {
422 foreach ($filter as $val) {
423 if (!is_callable($val)) {
424 return self::raiseError(null, QUICKFORM_INVALID_FILTER, null, E_USER_WARNING, "Callback function does not exist in QuickForm::setDefaults()", 'HTML_QuickForm_Error', true);
426 $defaultValues = $this->_recursiveFilter($val, $defaultValues);
429 } elseif (!is_callable($filter)) {
430 return self::raiseError(null, QUICKFORM_INVALID_FILTER, null, E_USER_WARNING, "Callback function does not exist in QuickForm::setDefaults()", 'HTML_QuickForm_Error', true);
432 $defaultValues = $this->_recursiveFilter($filter, $defaultValues);
435 $this->_defaultValues = HTML_QuickForm::arrayMerge($this->_defaultValues, $defaultValues);
436 foreach (array_keys($this->_elements) as $key) {
437 $this->_elements[$key]->onQuickFormEvent('updateValue', null, $this);
440 } // end func setDefaults
443 // {{{ setConstants()
446 * Initializes constant form values.
447 * These values won't get overridden by POST or GET vars
449 * @param array $constantValues values used to fill the form
450 * @param mixed $filter (optional) filter(s) to apply to all default values
456 function setConstants($constantValues = null, $filter = null)
458 if (is_array($constantValues)) {
459 if (isset($filter)) {
460 if (is_array($filter) && (2 != count($filter) || !is_callable($filter))) {
461 foreach ($filter as $val) {
462 if (!is_callable($val)) {
463 return self::raiseError(null, QUICKFORM_INVALID_FILTER, null, E_USER_WARNING, "Callback function does not exist in QuickForm::setConstants()", 'HTML_QuickForm_Error', true);
465 $constantValues = $this->_recursiveFilter($val, $constantValues);
468 } elseif (!is_callable($filter)) {
469 return self::raiseError(null, QUICKFORM_INVALID_FILTER, null, E_USER_WARNING, "Callback function does not exist in QuickForm::setConstants()", 'HTML_QuickForm_Error', true);
471 $constantValues = $this->_recursiveFilter($filter, $constantValues);
474 $this->_constantValues = HTML_QuickForm::arrayMerge($this->_constantValues, $constantValues);
475 foreach (array_keys($this->_elements) as $key) {
476 $this->_elements[$key]->onQuickFormEvent('updateValue', null, $this);
479 } // end func setConstants
482 // {{{ setMaxFileSize()
485 * Sets the value of MAX_FILE_SIZE hidden element
487 * @param int $bytes Size in bytes
492 function setMaxFileSize($bytes = 0)
495 $this->_maxFileSize = $bytes;
497 if (!$this->elementExists('MAX_FILE_SIZE')) {
498 $this->addElement('hidden', 'MAX_FILE_SIZE', $this->_maxFileSize);
500 $el =& $this->getElement('MAX_FILE_SIZE');
501 $el->updateAttributes(array('value' => $this->_maxFileSize));
503 } // end func setMaxFileSize
506 // {{{ getMaxFileSize()
509 * Returns the value of MAX_FILE_SIZE hidden element
513 * @return int max file size in bytes
515 function getMaxFileSize()
517 return $this->_maxFileSize;
518 } // end func getMaxFileSize
521 // {{{ &createElement()
524 * Creates a new form element of the given type.
526 * This method accepts variable number of parameters, their
527 * meaning and count depending on $elementType
529 * @param string $elementType type of element to add (text, textarea, file...)
532 * @return object extended class of HTML_element
533 * @throws HTML_QuickForm_Error
535 function &createElement($elementType)
537 $args = func_get_args();
538 $element =& HTML_QuickForm::_loadElement('createElement', $elementType, array_slice($args, 1));
540 } // end func createElement
543 // {{{ _loadElement()
546 * Returns a form element of the given type
548 * @param string $event event to send to newly created element ('createElement' or 'addElement')
549 * @param string $type element type
550 * @param array $args arguments for event
553 * @return object a new element
554 * @throws HTML_QuickForm_Error
556 function &_loadElement($event, $type, $args)
558 $type = strtolower($type);
559 if (!HTML_QuickForm::isTypeRegistered($type)) {
560 $error = self::raiseError(null, QUICKFORM_UNREGISTERED_ELEMENT, null, E_USER_WARNING, "Element '$type' does not exist in HTML_QuickForm::_loadElement()", 'HTML_QuickForm_Error', true);
563 $className = $GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES'][$type][1];
564 $includeFile = $GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES'][$type][0];
565 include_once($includeFile);
566 $elementObject = new $className(); //Moodle: PHP 5.3 compatibility
567 for ($i = 0; $i < 5; $i++) {
568 if (!isset($args[$i])) {
572 $err = $elementObject->onQuickFormEvent($event, $args, $this);
576 return $elementObject;
577 } // end func _loadElement
583 * Adds an element into the form
585 * If $element is a string representing element type, then this
586 * method accepts variable number of parameters, their meaning
587 * and count depending on $element
589 * @param mixed $element element object or type of element to add (text, textarea, file...)
591 * @return object reference to element
593 * @throws HTML_QuickForm_Error
595 function &addElement($element)
597 if (is_object($element) && is_subclass_of($element, 'html_quickform_element')) {
598 $elementObject = &$element;
599 $elementObject->onQuickFormEvent('updateValue', null, $this);
601 $args = func_get_args();
602 $elementObject =& $this->_loadElement('addElement', $element, array_slice($args, 1));
604 if ($pear->isError($elementObject)) {
605 return $elementObject;
608 $elementName = $elementObject->getName();
610 // Add the element if it is not an incompatible duplicate
611 if (!empty($elementName) && isset($this->_elementIndex[$elementName])) {
612 if ($this->_elements[$this->_elementIndex[$elementName]]->getType() ==
613 $elementObject->getType()) {
614 $this->_elements[] =& $elementObject;
615 $elKeys = array_keys($this->_elements);
616 $this->_duplicateIndex[$elementName][] = end($elKeys);
618 $error = self::raiseError(null, QUICKFORM_INVALID_ELEMENT_NAME, null, E_USER_WARNING, "Element '$elementName' already exists in HTML_QuickForm::addElement()", 'HTML_QuickForm_Error', true);
622 $this->_elements[] =& $elementObject;
623 $elKeys = array_keys($this->_elements);
624 $this->_elementIndex[$elementName] = end($elKeys);
626 if ($this->_freezeAll) {
627 $elementObject->freeze();
630 return $elementObject;
631 } // end func addElement
634 // {{{ insertElementBefore()
637 * Inserts a new element right before the other element
639 * Warning: it is not possible to check whether the $element is already
640 * added to the form, therefore if you want to move the existing form
641 * element to a new position, you'll have to use removeElement():
642 * $form->insertElementBefore($form->removeElement('foo', false), 'bar');
646 * @param object HTML_QuickForm_element Element to insert
647 * @param string Name of the element before which the new one is inserted
648 * @return object HTML_QuickForm_element reference to inserted element
649 * @throws HTML_QuickForm_Error
651 function &insertElementBefore(&$element, $nameAfter)
653 if (!empty($this->_duplicateIndex[$nameAfter])) {
654 $error = self::raiseError(null, QUICKFORM_INVALID_ELEMENT_NAME, null, E_USER_WARNING, 'Several elements named "' . $nameAfter . '" exist in HTML_QuickForm::insertElementBefore().', 'HTML_QuickForm_Error', true);
656 } elseif (!$this->elementExists($nameAfter)) {
657 $error = self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$nameAfter' does not exist in HTML_QuickForm::insertElementBefore()", 'HTML_QuickForm_Error', true);
660 $elementName = $element->getName();
661 $targetIdx = $this->_elementIndex[$nameAfter];
663 // Like in addElement(), check that it's not an incompatible duplicate
664 if (!empty($elementName) && isset($this->_elementIndex[$elementName])) {
665 if ($this->_elements[$this->_elementIndex[$elementName]]->getType() != $element->getType()) {
666 $error = self::raiseError(null, QUICKFORM_INVALID_ELEMENT_NAME, null, E_USER_WARNING, "Element '$elementName' already exists in HTML_QuickForm::insertElementBefore()", 'HTML_QuickForm_Error', true);
671 // Move all the elements after added back one place, reindex _elementIndex and/or _duplicateIndex
672 $elKeys = array_keys($this->_elements);
673 for ($i = end($elKeys); $i >= $targetIdx; $i--) {
674 if (isset($this->_elements[$i])) {
675 $currentName = $this->_elements[$i]->getName();
676 $this->_elements[$i + 1] =& $this->_elements[$i];
677 if ($this->_elementIndex[$currentName] == $i) {
678 $this->_elementIndex[$currentName] = $i + 1;
680 if (!empty($currentName)) {
681 $dupIdx = array_search($i, $this->_duplicateIndex[$currentName]);
682 $this->_duplicateIndex[$currentName][$dupIdx] = $i + 1;
685 unset($this->_elements[$i]);
688 // Put the element in place finally
689 $this->_elements[$targetIdx] =& $element;
691 $this->_elementIndex[$elementName] = $targetIdx;
693 $this->_duplicateIndex[$elementName][] = $targetIdx;
695 $element->onQuickFormEvent('updateValue', null, $this);
696 if ($this->_freezeAll) {
699 // If not done, the elements will appear in reverse order
700 ksort($this->_elements);
708 * Adds an element group
709 * @param array $elements array of elements composing the group
710 * @param string $name (optional)group name
711 * @param string $groupLabel (optional)group label
712 * @param string $separator (optional)string to separate elements
713 * @param string $appendName (optional)specify whether the group name should be
714 * used in the form element name ex: group[element]
715 * @return object reference to added group of elements
720 function &addGroup($elements, $name=null, $groupLabel='', $separator=null, $appendName = true)
722 static $anonGroups = 1;
724 if (0 == strlen($name)) {
725 $name = 'qf_group_' . $anonGroups++;
728 $group =& $this->addElement('group', $name, $groupLabel, $elements, $separator, $appendName);
730 } // end func addGroup
736 * Returns a reference to the element
738 * @param string $element Element name
741 * @return object reference to element
742 * @throws HTML_QuickForm_Error
744 function &getElement($element)
746 if (isset($this->_elementIndex[$element])) {
747 return $this->_elements[$this->_elementIndex[$element]];
749 $error = self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$element' does not exist in HTML_QuickForm::getElement()", 'HTML_QuickForm_Error', true);
752 } // end func getElement
755 // {{{ &getElementValue()
758 * Returns the element's raw value
760 * This returns the value as submitted by the form (not filtered)
761 * or set via setDefaults() or setConstants()
763 * @param string $element Element name
766 * @return mixed element value
767 * @throws HTML_QuickForm_Error
769 function &getElementValue($element)
771 if (!isset($this->_elementIndex[$element])) {
772 $error = self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$element' does not exist in HTML_QuickForm::getElementValue()", 'HTML_QuickForm_Error', true);
775 $value = $this->_elements[$this->_elementIndex[$element]]->getValue();
776 if (isset($this->_duplicateIndex[$element])) {
777 foreach ($this->_duplicateIndex[$element] as $index) {
778 if (null !== ($v = $this->_elements[$index]->getValue())) {
779 if (is_array($value)) {
782 $value = (null === $value)? $v: array($value, $v);
788 } // end func getElementValue
791 // {{{ getSubmitValue()
794 * Returns the elements value after submit and filter
796 * @param string Element name
799 * @return mixed submitted element value or null if not set
801 function getSubmitValue($elementName)
804 if (isset($this->_submitValues[$elementName]) || isset($this->_submitFiles[$elementName])) {
805 $value = isset($this->_submitValues[$elementName])? $this->_submitValues[$elementName]: array();
806 if (is_array($value) && isset($this->_submitFiles[$elementName])) {
807 foreach ($this->_submitFiles[$elementName] as $k => $v) {
808 $value = HTML_QuickForm::arrayMerge($value, $this->_reindexFiles($this->_submitFiles[$elementName][$k], $k));
812 } elseif ('file' == $this->getElementType($elementName)) {
813 return $this->getElementValue($elementName);
815 } elseif (false !== ($pos = strpos($elementName, '['))) {
816 $base = substr($elementName, 0, $pos);
817 $idx = "['" . str_replace(array(']', '['), array('', "']['"), substr($elementName, $pos + 1, -1)) . "']";
818 if (isset($this->_submitValues[$base])) {
819 $value = eval("return (isset(\$this->_submitValues['{$base}']{$idx})) ? \$this->_submitValues['{$base}']{$idx} : null;");
822 if ((is_array($value) || null === $value) && isset($this->_submitFiles[$base])) {
823 $props = array('name', 'type', 'size', 'tmp_name', 'error');
824 $code = "if (!isset(\$this->_submitFiles['{$base}']['name']{$idx})) {\n" .
828 foreach ($props as $prop) {
829 $code .= " \$v = HTML_QuickForm::arrayMerge(\$v, \$this->_reindexFiles(\$this->_submitFiles['{$base}']['{$prop}']{$idx}, '{$prop}'));\n";
831 $fileValue = eval($code . " return \$v;\n}\n");
832 if (null !== $fileValue) {
833 $value = null === $value? $fileValue: HTML_QuickForm::arrayMerge($value, $fileValue);
838 // This is only supposed to work for groups with appendName = false
839 if (null === $value && 'group' == $this->getElementType($elementName)) {
840 $group =& $this->getElement($elementName);
841 $elements =& $group->getElements();
842 foreach (array_keys($elements) as $key) {
843 $name = $group->getElementName($key);
844 // prevent endless recursion in case of radios and such
845 if ($name != $elementName) {
846 if (null !== ($v = $this->getSubmitValue($name))) {
853 } // end func getSubmitValue
856 // {{{ _reindexFiles()
859 * A helper function to change the indexes in $_FILES array
861 * @param mixed Some value from the $_FILES array
862 * @param string The key from the $_FILES array that should be appended
865 function _reindexFiles($value, $key)
867 if (!is_array($value)) {
868 return array($key => $value);
871 foreach ($value as $k => $v) {
872 $ret[$k] = $this->_reindexFiles($v, $key);
879 // {{{ getElementError()
882 * Returns error corresponding to validated element
884 * @param string $element Name of form element to check
887 * @return string error message corresponding to checked element
889 function getElementError($element)
891 if (isset($this->_errors[$element])) {
892 return $this->_errors[$element];
894 } // end func getElementError
897 // {{{ setElementError()
900 * Set error message for a form element
902 * @param string $element Name of form element to set error for
903 * @param string $message Error message, if empty then removes the current error message
908 function setElementError($element, $message = null)
910 if (!empty($message)) {
911 $this->_errors[$element] = $message;
913 unset($this->_errors[$element]);
915 } // end func setElementError
918 // {{{ getElementType()
921 * Returns the type of the given element
923 * @param string $element Name of form element
926 * @return string Type of the element, false if the element is not found
928 function getElementType($element)
930 if (isset($this->_elementIndex[$element])) {
931 return $this->_elements[$this->_elementIndex[$element]]->getType();
934 } // end func getElementType
937 // {{{ updateElementAttr()
940 * Updates Attributes for one or more elements
942 * @param mixed $elements Array of element names/objects or string of elements to be updated
943 * @param mixed $attrs Array or sting of html attributes
948 function updateElementAttr($elements, $attrs)
950 if (is_string($elements)) {
951 $elements = preg_split('/[ ]?,[ ]?/', $elements);
953 foreach (array_keys($elements) as $key) {
954 if (is_object($elements[$key]) && is_a($elements[$key], 'HTML_QuickForm_element')) {
955 $elements[$key]->updateAttributes($attrs);
956 } elseif (isset($this->_elementIndex[$elements[$key]])) {
957 $this->_elements[$this->_elementIndex[$elements[$key]]]->updateAttributes($attrs);
958 if (isset($this->_duplicateIndex[$elements[$key]])) {
959 foreach ($this->_duplicateIndex[$elements[$key]] as $index) {
960 $this->_elements[$index]->updateAttributes($attrs);
965 } // end func updateElementAttr
968 // {{{ removeElement()
973 * The method "unlinks" an element from the form, returning the reference
974 * to the element object. If several elements named $elementName exist,
975 * it removes the first one, leaving the others intact.
977 * @param string $elementName The element name
978 * @param boolean $removeRules True if rules for this element are to be removed too
981 * @return object HTML_QuickForm_element a reference to the removed element
982 * @throws HTML_QuickForm_Error
984 function &removeElement($elementName, $removeRules = true)
986 if (!isset($this->_elementIndex[$elementName])) {
987 $error = self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$elementName' does not exist in HTML_QuickForm::removeElement()", 'HTML_QuickForm_Error', true);
990 $el =& $this->_elements[$this->_elementIndex[$elementName]];
991 unset($this->_elements[$this->_elementIndex[$elementName]]);
992 if (empty($this->_duplicateIndex[$elementName])) {
993 unset($this->_elementIndex[$elementName]);
995 $this->_elementIndex[$elementName] = array_shift($this->_duplicateIndex[$elementName]);
998 unset($this->_rules[$elementName], $this->_errors[$elementName]);
1001 } // end func removeElement
1007 * Adds a validation rule for the given field
1009 * If the element is in fact a group, it will be considered as a whole.
1010 * To validate grouped elements as separated entities,
1011 * use addGroupRule instead of addRule.
1013 * @param string $element Form element name
1014 * @param string $message Message to display for invalid data
1015 * @param string $type Rule type, use getRegisteredRules() to get types
1016 * @param string $format (optional)Required for extra rule data
1017 * @param string $validation (optional)Where to perform validation: "server", "client"
1018 * @param boolean $reset Client-side validation: reset the form element to its original value if there is an error?
1019 * @param boolean $force Force the rule to be applied, even if the target form element does not exist
1022 * @throws HTML_QuickForm_Error
1024 function addRule($element, $message, $type, $format=null, $validation='server', $reset = false, $force = false)
1027 if (!is_array($element) && !$this->elementExists($element)) {
1028 return self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$element' does not exist in HTML_QuickForm::addRule()", 'HTML_QuickForm_Error', true);
1029 } elseif (is_array($element)) {
1030 foreach ($element as $el) {
1031 if (!$this->elementExists($el)) {
1032 return self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$el' does not exist in HTML_QuickForm::addRule()", 'HTML_QuickForm_Error', true);
1037 if (false === ($newName = $this->isRuleRegistered($type, true))) {
1038 return self::raiseError(null, QUICKFORM_INVALID_RULE, null, E_USER_WARNING, "Rule '$type' is not registered in HTML_QuickForm::addRule()", 'HTML_QuickForm_Error', true);
1039 } elseif (is_string($newName)) {
1042 if (is_array($element)) {
1043 $dependent = $element;
1044 $element = array_shift($dependent);
1048 if ($type == 'required' || $type == 'uploadedfile') {
1049 $this->_required[] = $element;
1051 if (!isset($this->_rules[$element])) {
1052 $this->_rules[$element] = array();
1054 if ($validation == 'client') {
1055 $this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_attributes['id'] . '; } catch(e) { return true; } return myValidator(this);'));
1057 $this->_rules[$element][] = array(
1059 'format' => $format,
1060 'message' => $message,
1061 'validation' => $validation,
1063 'dependent' => $dependent
1065 } // end func addRule
1068 // {{{ addGroupRule()
1071 * Adds a validation rule for the given group of elements
1073 * Only groups with a name can be assigned a validation rule
1074 * Use addGroupRule when you need to validate elements inside the group.
1075 * Use addRule if you need to validate the group as a whole. In this case,
1076 * the same rule will be applied to all elements in the group.
1077 * Use addRule if you need to validate the group against a function.
1079 * @param string $group Form group name
1080 * @param mixed $arg1 Array for multiple elements or error message string for one element
1081 * @param string $type (optional)Rule type use getRegisteredRules() to get types
1082 * @param string $format (optional)Required for extra rule data
1083 * @param int $howmany (optional)How many valid elements should be in the group
1084 * @param string $validation (optional)Where to perform validation: "server", "client"
1085 * @param bool $reset Client-side: whether to reset the element's value to its original state if validation failed.
1088 * @throws HTML_QuickForm_Error
1090 function addGroupRule($group, $arg1, $type='', $format=null, $howmany=0, $validation = 'server', $reset = false)
1092 if (!$this->elementExists($group)) {
1093 return self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Group '$group' does not exist in HTML_QuickForm::addGroupRule()", 'HTML_QuickForm_Error', true);
1096 $groupObj =& $this->getElement($group);
1097 if (is_array($arg1)) {
1099 foreach ($arg1 as $elementIndex => $rules) {
1100 $elementName = $groupObj->getElementName($elementIndex);
1101 foreach ($rules as $rule) {
1102 $format = (isset($rule[2])) ? $rule[2] : null;
1103 $validation = (isset($rule[3]) && 'client' == $rule[3])? 'client': 'server';
1104 $reset = isset($rule[4]) && $rule[4];
1106 if (false === ($newName = $this->isRuleRegistered($type, true))) {
1107 return self::raiseError(null, QUICKFORM_INVALID_RULE, null, E_USER_WARNING, "Rule '$type' is not registered in HTML_QuickForm::addGroupRule()", 'HTML_QuickForm_Error', true);
1108 } elseif (is_string($newName)) {
1112 $this->_rules[$elementName][] = array(
1114 'format' => $format,
1115 'message' => $rule[0],
1116 'validation' => $validation,
1120 if ('required' == $type || 'uploadedfile' == $type) {
1121 $groupObj->_required[] = $elementName;
1122 $this->_required[] = $elementName;
1125 if ('client' == $validation) {
1126 $this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_attributes['id'] . '; } catch(e) { return true; } return myValidator(this);'));
1130 if ($required > 0 && count($groupObj->getElements()) == $required) {
1131 $this->_required[] = $group;
1133 } elseif (is_string($arg1)) {
1134 if (false === ($newName = $this->isRuleRegistered($type, true))) {
1135 return self::raiseError(null, QUICKFORM_INVALID_RULE, null, E_USER_WARNING, "Rule '$type' is not registered in HTML_QuickForm::addGroupRule()", 'HTML_QuickForm_Error', true);
1136 } elseif (is_string($newName)) {
1140 // addGroupRule() should also handle <select multiple>
1141 if (is_a($groupObj, 'html_quickform_group')) {
1142 // Radios need to be handled differently when required
1143 if ($type == 'required' && $groupObj->getGroupType() == 'radio') {
1144 $howmany = ($howmany == 0) ? 1 : $howmany;
1146 $howmany = ($howmany == 0) ? count($groupObj->getElements()) : $howmany;
1150 $this->_rules[$group][] = array('type' => $type,
1151 'format' => $format,
1153 'validation' => $validation,
1154 'howmany' => $howmany,
1156 if ($type == 'required') {
1157 $this->_required[] = $group;
1159 if ($validation == 'client') {
1160 $this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_attributes['id'] . '; } catch(e) { return true; } return myValidator(this);'));
1163 } // end func addGroupRule
1166 // {{{ addFormRule()
1169 * Adds a global validation rule
1171 * This should be used when for a rule involving several fields or if
1172 * you want to use some completely custom validation for your form.
1173 * The rule function/method should return true in case of successful
1174 * validation and array('element name' => 'error') when there were errors.
1177 * @param mixed Callback, either function name or array(&$object, 'method')
1178 * @throws HTML_QuickForm_Error
1180 function addFormRule($rule)
1182 if (!is_callable($rule)) {
1183 return self::raiseError(null, QUICKFORM_INVALID_RULE, null, E_USER_WARNING, 'Callback function does not exist in HTML_QuickForm::addFormRule()', 'HTML_QuickForm_Error', true);
1185 $this->_formRules[] = $rule;
1189 // {{{ applyFilter()
1192 * Applies a data filter for the given field(s)
1194 * @param mixed $element Form element name or array of such names
1195 * @param mixed $filter Callback, either function name or array(&$object, 'method')
1199 function applyFilter($element, $filter)
1201 if (!is_callable($filter)) {
1202 return self::raiseError(null, QUICKFORM_INVALID_FILTER, null, E_USER_WARNING, "Callback function does not exist in QuickForm::applyFilter()", 'HTML_QuickForm_Error', true);
1204 if ($element == '__ALL__') {
1205 $this->_submitValues = $this->_recursiveFilter($filter, $this->_submitValues);
1207 if (!is_array($element)) {
1208 $element = array($element);
1210 foreach ($element as $elName) {
1211 $value = $this->getSubmitValue($elName);
1212 if (null !== $value) {
1213 if (false === strpos($elName, '[')) {
1214 $this->_submitValues[$elName] = $this->_recursiveFilter($filter, $value);
1216 $idx = "['" . str_replace(array(']', '['), array('', "']['"), $elName) . "']";
1217 eval("\$this->_submitValues{$idx} = \$this->_recursiveFilter(\$filter, \$value);");
1222 } // end func applyFilter
1225 // {{{ _recursiveFilter()
1228 * Recursively apply a filter function
1230 * @param string $filter filter to apply
1231 * @param mixed $value submitted values
1234 * @return cleaned values
1236 function _recursiveFilter($filter, $value)
1238 if (is_array($value)) {
1239 $cleanValues = array();
1240 foreach ($value as $k => $v) {
1241 $cleanValues[$k] = $this->_recursiveFilter($filter, $v);
1243 return $cleanValues;
1245 return call_user_func($filter, $value);
1247 } // end func _recursiveFilter
1255 * Merges two array like the PHP function array_merge but recursively.
1256 * The main difference is that existing keys will not be renumbered
1257 * if they are integers.
1260 * @param array $a original array
1261 * @param array $b array which will be merged into first one
1262 * @return array merged array
1264 static function arrayMerge($a, $b)
1266 if (is_null($a)) {$a = array();}
1267 if (is_null($b)) {$b = array();}
1268 foreach ($b as $k => $v) {
1270 if (isset($a[$k]) && !is_array($a[$k])) {
1273 if (!isset($a[$k])) {
1276 $a[$k] = HTML_QuickForm::arrayMerge($a[$k], $v);
1283 } // end func arrayMerge
1286 // {{{ isTypeRegistered()
1289 * Returns whether or not the form element type is supported
1291 * @param string $type Form element type
1296 function isTypeRegistered($type)
1298 return isset($GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES'][strtolower($type)]);
1299 } // end func isTypeRegistered
1302 // {{{ getRegisteredTypes()
1305 * Returns an array of registered element types
1311 function getRegisteredTypes()
1313 return array_keys($GLOBALS['HTML_QUICKFORM_ELEMENT_TYPES']);
1314 } // end func getRegisteredTypes
1317 // {{{ isRuleRegistered()
1320 * Returns whether or not the given rule is supported
1322 * @param string $name Validation rule name
1323 * @param bool Whether to automatically register subclasses of HTML_QuickForm_Rule
1326 * @return mixed true if previously registered, false if not, new rule name if auto-registering worked
1328 function isRuleRegistered($name, $autoRegister = false)
1330 if (is_scalar($name) && isset($GLOBALS['_HTML_QuickForm_registered_rules'][$name])) {
1332 } elseif (!$autoRegister) {
1335 // automatically register the rule if requested
1336 include_once 'HTML/QuickForm/RuleRegistry.php';
1338 if (is_object($name) && is_a($name, 'html_quickform_rule')) {
1339 $ruleName = !empty($name->name)? $name->name: strtolower(get_class($name));
1340 } elseif (is_string($name) && class_exists($name)) {
1341 $parent = strtolower($name);
1343 if ('html_quickform_rule' == strtolower($parent)) {
1344 $ruleName = strtolower($name);
1347 } while ($parent = get_parent_class($parent));
1350 $registry =& HTML_QuickForm_RuleRegistry::singleton();
1351 $registry->registerRule($ruleName, null, $name);
1354 } // end func isRuleRegistered
1357 // {{{ getRegisteredRules()
1360 * Returns an array of registered validation rules
1366 function getRegisteredRules()
1368 return array_keys($GLOBALS['_HTML_QuickForm_registered_rules']);
1369 } // end func getRegisteredRules
1372 // {{{ isElementRequired()
1375 * Returns whether or not the form element is required
1377 * @param string $element Form element name
1382 function isElementRequired($element)
1384 return in_array($element, $this->_required, true);
1385 } // end func isElementRequired
1388 // {{{ isElementFrozen()
1391 * Returns whether or not the form element is frozen
1393 * @param string $element Form element name
1398 function isElementFrozen($element)
1400 if (isset($this->_elementIndex[$element])) {
1401 return $this->_elements[$this->_elementIndex[$element]]->isFrozen();
1404 } // end func isElementFrozen
1407 // {{{ setJsWarnings()
1410 * Sets JavaScript warning messages
1412 * @param string $pref Prefix warning
1413 * @param string $post Postfix warning
1418 function setJsWarnings($pref, $post)
1420 $this->_jsPrefix = $pref;
1421 $this->_jsPostfix = $post;
1422 } // end func setJsWarnings
1425 // {{{ setRequiredNote()
1428 * Sets required-note
1430 * @param string $note Message indicating some elements are required
1435 function setRequiredNote($note)
1437 $this->_requiredNote = $note;
1438 } // end func setRequiredNote
1441 // {{{ getRequiredNote()
1444 * Returns the required note
1450 function getRequiredNote()
1452 return $this->_requiredNote;
1453 } // end func getRequiredNote
1459 * Performs the server side validation
1462 * @return boolean true if no error found
1466 if (count($this->_rules) == 0 && count($this->_formRules) == 0 &&
1467 $this->isSubmitted()) {
1468 return (0 == count($this->_errors));
1469 } elseif (!$this->isSubmitted()) {
1473 include_once('HTML/QuickForm/RuleRegistry.php');
1474 $registry =& HTML_QuickForm_RuleRegistry::singleton();
1476 foreach ($this->_rules as $target => $rules) {
1477 $submitValue = $this->getSubmitValue($target);
1479 foreach ($rules as $rule) {
1480 if ((isset($rule['group']) && isset($this->_errors[$rule['group']])) ||
1481 isset($this->_errors[$target])) {
1484 // If element is not required and is empty, we shouldn't validate it
1485 if (!$this->isElementRequired($target)) {
1486 if (!isset($submitValue) || '' == $submitValue) {
1488 // Fix for bug #3501: we shouldn't validate not uploaded files, either.
1489 // Unfortunately, we can't just use $element->isUploadedFile() since
1490 // the element in question can be buried in group. Thus this hack.
1491 } elseif (is_array($submitValue)) {
1492 if (false === ($pos = strpos($target, '['))) {
1493 $isUpload = !empty($this->_submitFiles[$target]);
1495 $base = substr($target, 0, $pos);
1496 $idx = "['" . str_replace(array(']', '['), array('', "']['"), substr($target, $pos + 1, -1)) . "']";
1497 eval("\$isUpload = isset(\$this->_submitFiles['{$base}']['name']{$idx});");
1499 if ($isUpload && (!isset($submitValue['error']) || 0 != $submitValue['error'])) {
1504 if (isset($rule['dependent']) && is_array($rule['dependent'])) {
1505 $values = array($submitValue);
1506 foreach ($rule['dependent'] as $elName) {
1507 $values[] = $this->getSubmitValue($elName);
1509 $result = $registry->validate($rule['type'], $values, $rule['format'], true);
1510 } elseif (is_array($submitValue) && !isset($rule['howmany'])) {
1511 $result = $registry->validate($rule['type'], $submitValue, $rule['format'], true);
1513 $result = $registry->validate($rule['type'], $submitValue, $rule['format'], false);
1516 if (!$result || (!empty($rule['howmany']) && $rule['howmany'] > (int)$result)) {
1517 if (isset($rule['group'])) {
1518 $this->_errors[$rule['group']] = $rule['message'];
1520 $this->_errors[$target] = $rule['message'];
1526 // process the global rules now
1527 foreach ($this->_formRules as $rule) {
1528 if (true !== ($res = call_user_func($rule, $this->_submitValues, $this->_submitFiles))) {
1529 if (is_array($res)) {
1530 $this->_errors += $res;
1532 return self::raiseError(null, QUICKFORM_ERROR, null, E_USER_WARNING, 'Form rule callback returned invalid value in HTML_QuickForm::validate()', 'HTML_QuickForm_Error', true);
1537 return (0 == count($this->_errors));
1538 } // end func validate
1544 * Displays elements without HTML input tags
1546 * @param mixed $elementList array or string of element(s) to be frozen
1549 * @throws HTML_QuickForm_Error
1551 function freeze($elementList=null)
1553 if (!isset($elementList)) {
1554 $this->_freezeAll = true;
1555 $elementList = array();
1557 if (!is_array($elementList)) {
1558 $elementList = preg_split('/[ ]*,[ ]*/', $elementList);
1560 $elementList = array_flip($elementList);
1563 foreach (array_keys($this->_elements) as $key) {
1564 $name = $this->_elements[$key]->getName();
1565 if ($this->_freezeAll || isset($elementList[$name])) {
1566 $this->_elements[$key]->freeze();
1567 unset($elementList[$name]);
1571 if (!empty($elementList)) {
1572 return self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Nonexistant element(s): '" . implode("', '", array_keys($elementList)) . "' in HTML_QuickForm::freeze()", 'HTML_QuickForm_Error', true);
1575 } // end func freeze
1581 * Returns whether or not the whole form is frozen
1589 return $this->_freezeAll;
1590 } // end func isFrozen
1596 * Performs the form data processing
1598 * @param mixed $callback Callback, either function name or array(&$object, 'method')
1599 * @param bool $mergeFiles Whether uploaded files should be processed too
1602 * @throws HTML_QuickForm_Error
1604 function process($callback, $mergeFiles = true)
1606 if (!is_callable($callback)) {
1607 return self::raiseError(null, QUICKFORM_INVALID_PROCESS, null, E_USER_WARNING, "Callback function does not exist in QuickForm::process()", 'HTML_QuickForm_Error', true);
1609 $values = ($mergeFiles === true) ? HTML_QuickForm::arrayMerge($this->_submitValues, $this->_submitFiles) : $this->_submitValues;
1610 return call_user_func($callback, $values);
1611 } // end func process
1617 * Accepts a renderer
1619 * @param object An HTML_QuickForm_Renderer object
1624 function accept(&$renderer)
1626 $renderer->startForm($this);
1627 foreach (array_keys($this->_elements) as $key) {
1628 $element =& $this->_elements[$key];
1629 $elementName = $element->getName();
1630 $required = ($this->isElementRequired($elementName) && !$element->isFrozen());
1631 $error = $this->getElementError($elementName);
1632 $element->accept($renderer, $required, $error);
1634 $renderer->finishForm($this);
1635 } // end func accept
1638 // {{{ defaultRenderer()
1641 * Returns a reference to default renderer object
1645 * @return object a default renderer object
1647 function &defaultRenderer()
1649 if (!isset($GLOBALS['_HTML_QuickForm_default_renderer'])) {
1650 include_once('HTML/QuickForm/Renderer/Default.php');
1651 $GLOBALS['_HTML_QuickForm_default_renderer'] = new HTML_QuickForm_Renderer_Default(); //Moodle: PHP 5.3 compatibility
1653 return $GLOBALS['_HTML_QuickForm_default_renderer'];
1654 } // end func defaultRenderer
1660 * Returns an HTML version of the form
1662 * @param string $in_data (optional) Any extra data to insert right
1663 * before form is rendered. Useful when using templates.
1665 * @return string Html version of the form
1669 function toHtml ($in_data = null)
1671 if (!is_null($in_data)) {
1672 $this->addElement('html', $in_data);
1674 $renderer =& $this->defaultRenderer();
1675 $this->accept($renderer);
1676 return $renderer->toHtml();
1677 } // end func toHtml
1680 // {{{ getValidationScript()
1683 * Returns the client side validation script
1687 * @return string Javascript to perform validation, empty string if no 'client' rules were added
1689 function getValidationScript()
1691 if (empty($this->_rules) || empty($this->_attributes['onsubmit'])) {
1695 include_once('HTML/QuickForm/RuleRegistry.php');
1696 $registry =& HTML_QuickForm_RuleRegistry::singleton();
1707 foreach ($this->_rules as $elementName => $rules) {
1708 foreach ($rules as $rule) {
1709 if ('client' == $rule['validation']) {
1712 $dependent = isset($rule['dependent']) && is_array($rule['dependent']);
1713 $rule['message'] = strtr($rule['message'], $js_escape);
1715 if (isset($rule['group'])) {
1716 $group =& $this->getElement($rule['group']);
1717 // No JavaScript validation for frozen elements
1718 if ($group->isFrozen()) {
1721 $elements =& $group->getElements();
1722 foreach (array_keys($elements) as $key) {
1723 if ($elementName == $group->getElementName($key)) {
1724 $element =& $elements[$key];
1728 } elseif ($dependent) {
1730 $element[] =& $this->getElement($elementName);
1731 foreach ($rule['dependent'] as $elName) {
1732 $element[] =& $this->getElement($elName);
1735 $element =& $this->getElement($elementName);
1737 // No JavaScript validation for frozen elements
1738 if (is_object($element) && $element->isFrozen()) {
1740 } elseif (is_array($element)) {
1741 foreach (array_keys($element) as $key) {
1742 if ($element[$key]->isFrozen()) {
1748 $test[] = $registry->getValidationScript($element, $elementName, $rule);
1752 if (count($test) > 0) {
1754 "\n<script type=\"text/javascript\">\n" .
1756 "function validate_" . $this->_attributes['id'] . "(frm) {\n" .
1757 " var value = '';\n" .
1758 " var errFlag = new Array();\n" .
1759 " var _qfGroups = {};\n" .
1760 " _qfMsg = '';\n\n" .
1762 "\n if (_qfMsg != '') {\n" .
1763 " _qfMsg = '" . strtr($this->_jsPrefix, $js_escape) . "' + _qfMsg;\n" .
1764 " _qfMsg = _qfMsg + '\\n" . strtr($this->_jsPostfix, $js_escape) . "';\n" .
1765 " alert(_qfMsg);\n" .
1766 " return false;\n" .
1774 } // end func getValidationScript
1777 // {{{ getSubmitValues()
1780 * Returns the values submitted by the form
1784 * @param bool Whether uploaded files should be returned too
1787 function getSubmitValues($mergeFiles = false)
1789 return $mergeFiles? HTML_QuickForm::arrayMerge($this->_submitValues, $this->_submitFiles): $this->_submitValues;
1790 } // end func getSubmitValues
1796 * Returns the form's contents in an array.
1798 * The description of the array structure is in HTML_QuickForm_Renderer_Array docs
1802 * @param bool Whether to collect hidden elements (passed to the Renderer's constructor)
1803 * @return array of form contents
1805 function toArray($collectHidden = false)
1807 include_once 'HTML/QuickForm/Renderer/Array.php';
1808 $renderer = new HTML_QuickForm_Renderer_Array($collectHidden); //Moodle: PHP 5.3 compatibility
1809 $this->accept($renderer);
1810 return $renderer->toArray();
1811 } // end func toArray
1814 // {{{ exportValue()
1817 * Returns a 'safe' element's value
1819 * This method first tries to find a cleaned-up submitted value,
1820 * it will return a value set by setValue()/setDefaults()/setConstants()
1821 * if submitted value does not exist for the given element.
1823 * @param string Name of an element
1827 function exportValue($element)
1829 if (!isset($this->_elementIndex[$element])) {
1830 return self::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Element '$element' does not exist in HTML_QuickForm::getElementValue()", 'HTML_QuickForm_Error', true);
1832 $value = $this->_elements[$this->_elementIndex[$element]]->exportValue($this->_submitValues, false);
1833 if (isset($this->_duplicateIndex[$element])) {
1834 foreach ($this->_duplicateIndex[$element] as $index) {
1835 if (null !== ($v = $this->_elements[$index]->exportValue($this->_submitValues, false))) {
1836 if (is_array($value)) {
1839 $value = (null === $value)? $v: array($value, $v);
1848 // {{{ exportValues()
1851 * Returns 'safe' elements' values
1853 * Unlike getSubmitValues(), this will return only the values
1854 * corresponding to the elements present in the form.
1856 * @param mixed Array/string of element names, whose values we want. If not set then return all elements.
1858 * @return array An assoc array of elements' values
1859 * @throws HTML_QuickForm_Error
1861 function exportValues($elementList = null)
1864 if (null === $elementList) {
1865 // iterate over all elements, calling their exportValue() methods
1866 foreach (array_keys($this->_elements) as $key) {
1867 $value = $this->_elements[$key]->exportValue($this->_submitValues, true);
1868 if (is_array($value)) {
1869 // This shit throws a bogus warning in PHP 4.3.x
1870 $values = HTML_QuickForm::arrayMerge($values, $value);
1874 if (!is_array($elementList)) {
1875 $elementList = array_map('trim', explode(',', $elementList));
1877 foreach ($elementList as $elementName) {
1878 $value = $this->exportValue($elementName);
1880 if ($pear->isError($value)) {
1883 $values[$elementName] = $value;
1890 // {{{ isSubmitted()
1893 * Tells whether the form was already submitted
1895 * This is useful since the _submitFiles and _submitValues arrays
1896 * may be completely empty after the trackSubmit value is removed.
1901 function isSubmitted()
1903 return $this->_flagSubmitted;
1911 * Tell whether a result from a QuickForm method is an error (an instance of HTML_QuickForm_Error)
1914 * @param mixed result code
1915 * @return bool whether $value is an error
1917 static function isError($value)
1919 return (is_object($value) && is_a($value, 'html_quickform_error'));
1920 } // end func isError
1923 // {{{ errorMessage()
1926 * Return a textual error message for an QuickForm error code
1929 * @param int error code
1930 * @return string error message
1932 static function errorMessage($value)
1934 // make the variable static so that it only has to do the defining on the first call
1935 static $errorMessages;
1937 // define the varies error messages
1938 if (!isset($errorMessages)) {
1939 $errorMessages = array(
1940 QUICKFORM_OK => 'no error',
1941 QUICKFORM_ERROR => 'unknown error',
1942 QUICKFORM_INVALID_RULE => 'the rule does not exist as a registered rule',
1943 QUICKFORM_NONEXIST_ELEMENT => 'nonexistent html element',
1944 QUICKFORM_INVALID_FILTER => 'invalid filter',
1945 QUICKFORM_UNREGISTERED_ELEMENT => 'unregistered element',
1946 QUICKFORM_INVALID_ELEMENT_NAME => 'element already exists',
1947 QUICKFORM_INVALID_PROCESS => 'process callback does not exist',
1948 QUICKFORM_DEPRECATED => 'method is deprecated',
1949 QUICKFORM_INVALID_DATASOURCE => 'datasource is not an object'
1953 // If this is an error object, then grab the corresponding error code
1954 if (HTML_QuickForm::isError($value)) {
1955 $value = $value->getCode();
1958 // return the textual error message corresponding to the code
1959 return isset($errorMessages[$value]) ? $errorMessages[$value] : $errorMessages[QUICKFORM_ERROR];
1960 } // end func errorMessage
1963 } // end class HTML_QuickForm
1965 class HTML_QuickForm_Error extends PEAR_Error {
1970 * Prefix for all error messages
1973 var $error_message_prefix = 'QuickForm Error: ';
1979 * Creates a quickform error object, extending the PEAR_Error class
1981 * @param int $code the error code
1982 * @param int $mode the reaction to the error, either return, die or trigger/callback
1983 * @param int $level intensity of the error (PHP error code)
1984 * @param mixed $debuginfo any information that can inform user as to nature of the error
1986 function HTML_QuickForm_Error($code = QUICKFORM_ERROR, $mode = PEAR_ERROR_RETURN,
1987 $level = E_USER_NOTICE, $debuginfo = null)
1989 if (is_int($code)) {
1990 $this->PEAR_Error(HTML_QuickForm::errorMessage($code), $code, $mode, $level, $debuginfo);
1992 $this->PEAR_Error("Invalid error code: $code", QUICKFORM_ERROR, $mode, $level, $debuginfo);
1997 } // end class HTML_QuickForm_Error