some changes to setHelpButton methods on elements and MoodleQuickForm to allow non standard help buttons such as the grades pop up window.

lib/form/checkbox.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_checkbox extends HTML_QuickForm_checkbox{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_checkbox extends HTML_QuickForm_checkbox{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/file.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_file extends HTML_QuickForm_file{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,13 +31,14 @@ class MoodleQuickForm_file extends HTML_QuickForm_file{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
-     * get html for help button
+     * set html for help button
      *
      * @access   public
-     * @return  string html for help button
+     * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
     function getHelpButton(){
         return $this->_helpbutton;

lib/form/group.php

@@ -25,8 +25,9 @@ class MoodleQuickForm_group extends HTML_QuickForm_group{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -36,13 +37,14 @@ class MoodleQuickForm_group extends HTML_QuickForm_group{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
-     * get html for help button
+     * set html for help button
      *
      * @access   public
-     * @return  string html for help button
+     * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
     function getHelpButton(){
         return $this->_helpbutton;

lib/form/hidden.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_hidden extends HTML_QuickForm_hidden{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
 
     }
     /**

lib/form/modgroupmode.php

@@ -9,8 +9,6 @@ require_once "$CFG->libdir/form/select.php";
  * @access       public
  */
 class MoodleQuickForm_modgroupmode extends MoodleQuickForm_select{
-
-
     /**
      * Class constructor
      *
@@ -43,9 +41,10 @@ class MoodleQuickForm_modgroupmode extends MoodleQuickForm_select{
     {
         switch ($event) {
             case 'createElement':
-                $choices=array();
+                $choices = array();
                 $choices[0] = get_string('no');
                 $choices[1] = get_string('yes');
+                $this->setHelpButton(array('groupmode', get_string('groupmode')));
                 $this->load($choices);
                 break;
         }

lib/form/password.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_password extends HTML_QuickForm_password{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_password extends HTML_QuickForm_password{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/radio.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_radio extends HTML_QuickForm_radio{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_radio extends HTML_QuickForm_radio{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/select.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_select extends HTML_QuickForm_select{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_select extends HTML_QuickForm_select{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/static.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_static extends HTML_QuickForm_static{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_static extends HTML_QuickForm_static{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/text.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_text extends HTML_QuickForm_text{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_text extends HTML_QuickForm_text{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/form/textarea.php

@@ -19,8 +19,9 @@ class MoodleQuickForm_textarea extends HTML_QuickForm_textarea{
      *
      * @access   public
      * @param array $help array of arguments to make a help button
+     * @param string $function function name to call to get html
      */
-    function setHelpButton($helpbuttonargs){
+    function setHelpButton($helpbuttonargs, $function='helpbutton'){
         if (!is_array($helpbuttonargs)){
             $helpbuttonargs=array($helpbuttonargs);
         }else{
@@ -30,7 +31,7 @@ class MoodleQuickForm_textarea extends HTML_QuickForm_textarea{
         //without having to specify it in every call to make a button.
         $defaultargs=array('', '', 'moodle', true, false, '', true);
         $helpbuttonargs=$helpbuttonargs + $defaultargs ;
-        $this->_helpbutton=call_user_func_array('helpbutton', $helpbuttonargs);
+        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
     }
     /**
      * get html for help button

lib/formslib.php

@@ -337,7 +337,6 @@ class moodleform_mod extends moodleform {
         $mform=$this->_form;
         $mform->addElement('header', '', get_string('modstandardels', 'form'));
         $mform->addElement('modgroupmode', 'groupmode', get_string('groupmode'));
-        $mform->setHelpButton('groupmode', array('groupmode', get_string('groupmode')));
         $mform->setType('groupmode', PARAM_INT);
 
         $mform->addElement('modvisible', 'visible', get_string('visible'));
@@ -554,26 +553,27 @@ class MoodleQuickForm extends HTML_QuickForm_DHTMLRulesTableless {
      *
      * @access   public
     */
-    function setHelpButtons($buttons, $suppresscheck=false){
+    function setHelpButtons($buttons, $suppresscheck=false, $function='helpbutton'){
 
         foreach ($buttons as $elementname => $button){
-            $this->setHelpButton($elementname, $button, $suppresscheck);
+            $this->setHelpButton($elementname, $button, $suppresscheck, $function);
         }
     }
     /**
      * Add a single button.
      *
      * @param string $elementname name of the element to add the item to
-     * @param array $button - arguments to pass to setHelpButton
+     * @param array $button - arguments to pass to function $function
      * @param boolean $suppresscheck - whether to throw an error if the element
      *                                  doesn't exist.
+     * @param string $function - function to generate html from the arguments in $button
      */
-    function setHelpButton($elementname, $button, $suppresscheck=false){
+    function setHelpButton($elementname, $button, $suppresscheck=false, $function='helpbutton'){
         if (array_key_exists($elementname, $this->_elementIndex)){
             //_elements has a numeric index, this code accesses the elements by name
             $element=&$this->_elements[$this->_elementIndex[$elementname]];
             if (method_exists($element, 'setHelpButton')){
-                $element->setHelpButton($button);
+                $element->setHelpButton($button, $function);
             }else{
                 $a=new object();
                 $a->name=$element->getName();
@@ -935,5 +935,6 @@ MoodleQuickForm::registerElementType('hidden', "$CFG->libdir/form/hidden.php", '
 MoodleQuickForm::registerElementType('modvisible', "$CFG->libdir/form/modvisible.php", 'MoodleQuickForm_modvisible');
 MoodleQuickForm::registerElementType('modgroupmode', "$CFG->libdir/form/modgroupmode.php", 'MoodleQuickForm_modgroupmode');
 MoodleQuickForm::registerElementType('selectyesno', "$CFG->libdir/form/selectyesno.php", 'MoodleQuickForm_selectyesno');
+MoodleQuickForm::registerElementType('modgrade', "$CFG->libdir/form/modgrade.php", 'MoodleQuickForm_modgrade');
 
 ?>