course/moodleform_mod.php

   1 <?php
   2 require_once ($CFG->libdir.'/formslib.php');
   3 require_once($CFG->libdir.'/completionlib.php');
   4
   5 /**
   6  * This class adds extra methods to form wrapper specific to be used for module
   7  * add / update forms mod/{modname}/mod_form.php replaced deprecated mod/{modname}/mod.html
   8  */
   9 abstract class moodleform_mod extends moodleform {
  10     /** Current data */
  11     protected $current;
  12     /**
  13      * Instance of the module that is being updated. This is the id of the {prefix}{modulename}
  14      * record. Can be used in form definition. Will be "" if this is an 'add' form and not an
  15      * update one.
  16      *
  17      * @var mixed
  18      */
  19     protected $_instance;
  20     /**
  21      * Section of course that module instance will be put in or is in.
  22      * This is always the section number itself (column 'section' from 'course_sections' table).
  23      *
  24      * @var mixed
  25      */
  26     protected $_section;
  27     /**
  28      * Course module record of the module that is being updated. Will be null if this is an 'add' form and not an
  29      * update one.
  30       *
  31      * @var mixed
  32      */
  33     protected $_cm;
  34     /**
  35      * List of modform features
  36      */
  37     protected $_features;
  38     /**
  39      * @var array Custom completion-rule elements, if enabled
  40      */
  41     protected $_customcompletionelements;
  42     /**
  43      * @var string name of module
  44      */
  45     protected $_modname;
  46     /** current context, course or module depends if already exists*/
  47     protected $context;
  48
  49     /** a flag indicating whether outcomes are being used*/
  50     protected $_outcomesused;
  51
  52     function moodleform_mod($current, $section, $cm, $course) {
  53         $this->current   = $current;
  54         $this->_instance = $current->instance;
  55         $this->_section  = $section;
  56         $this->_cm       = $cm;
  57         if ($this->_cm) {
  58             $this->context = context_module::instance($this->_cm->id);
  59         } else {
  60             $this->context = context_course::instance($course->id);
  61         }
  62
  63         // Guess module name
  64         $matches = array();
  65         if (!preg_match('/^mod_([^_]+)_mod_form$/', get_class($this), $matches)) {
  66             debugging('Use $modname parameter or rename form to mod_xx_mod_form, where xx is name of your module');
  67             print_error('unknownmodulename');
  68         }
  69         $this->_modname = $matches[1];
  70         $this->init_features();
  71         parent::moodleform('modedit.php');
  72     }
  73
  74     protected function init_features() {
  75         global $CFG;
  76
  77         $this->_features = new stdClass();
  78         $this->_features->groups            = plugin_supports('mod', $this->_modname, FEATURE_GROUPS, true);
  79         $this->_features->groupings         = plugin_supports('mod', $this->_modname, FEATURE_GROUPINGS, false);
  80         $this->_features->groupmembersonly  = (!empty($CFG->enablegroupmembersonly) and plugin_supports('mod', $this->_modname, FEATURE_GROUPMEMBERSONLY, false));
  81         $this->_features->outcomes          = (!empty($CFG->enableoutcomes) and plugin_supports('mod', $this->_modname, FEATURE_GRADE_OUTCOMES, true));
  82         $this->_features->hasgrades         = plugin_supports('mod', $this->_modname, FEATURE_GRADE_HAS_GRADE, false);
  83         $this->_features->idnumber          = plugin_supports('mod', $this->_modname, FEATURE_IDNUMBER, true);
  84         $this->_features->introeditor       = plugin_supports('mod', $this->_modname, FEATURE_MOD_INTRO, true);
  85         $this->_features->defaultcompletion = plugin_supports('mod', $this->_modname, FEATURE_MODEDIT_DEFAULT_COMPLETION, true);
  86         $this->_features->rating            = plugin_supports('mod', $this->_modname, FEATURE_RATE, false);
  87         $this->_features->showdescription   = plugin_supports('mod', $this->_modname, FEATURE_SHOW_DESCRIPTION, false);
  88
  89         $this->_features->gradecat          = ($this->_features->outcomes or $this->_features->hasgrades);
  90         $this->_features->advancedgrading   = plugin_supports('mod', $this->_modname, FEATURE_ADVANCED_GRADING, false);
  91     }
  92
  93     /**
  94      * Only available on moodleform_mod.
  95      *
  96      * @param array $default_values passed by reference
  97      */
  98     function data_preprocessing(&$default_values){
  99         if (empty($default_values['scale'])) {
 100             $default_values['assessed'] = 0;
 101         }
 102
 103         if (empty($default_values['assessed'])){
 104             $default_values['ratingtime'] = 0;
 105         } else {
 106             $default_values['ratingtime']=
 107                 ($default_values['assesstimestart'] && $default_values['assesstimefinish']) ? 1 : 0;
 108         }
 109     }
 110
 111     /**
 112      * Each module which defines definition_after_data() must call this method using parent::definition_after_data();
 113      */
 114     function definition_after_data() {
 115         global $CFG, $COURSE;
 116         $mform =& $this->_form;
 117
 118         if ($id = $mform->getElementValue('update')) {
 119             $modulename = $mform->getElementValue('modulename');
 120             $instance   = $mform->getElementValue('instance');
 121
 122             if ($this->_features->gradecat) {
 123                 $gradecat = false;
 124                 if (!empty($CFG->enableoutcomes) and $this->_features->outcomes) {
 125                     $outcomes = grade_outcome::fetch_all_available($COURSE->id);
 126                     if (!empty($outcomes)) {
 127                         $gradecat = true;
 128                     }
 129                 }
 130
 131                 $items = grade_item::fetch_all(array('itemtype'=>'mod', 'itemmodule'=>$modulename,'iteminstance'=>$instance, 'courseid'=>$COURSE->id));
 132                 //will be no items if, for example, this activity supports ratings but rating aggregate type == no ratings
 133                 if (!empty($items)) {
 134                     foreach ($items as $item) {
 135                         if (!empty($item->outcomeid)) {
 136                             $elname = 'outcome_'.$item->outcomeid;
 137                             if ($mform->elementExists($elname)) {
 138                                 $mform->hardFreeze($elname); // prevent removing of existing outcomes
 139                             }
 140                         }
 141                     }
 142
 143                     foreach ($items as $item) {
 144                         if (is_bool($gradecat)) {
 145                             $gradecat = $item->categoryid;
 146                             continue;
 147                         }
 148                         if ($gradecat != $item->categoryid) {
 149                             //mixed categories
 150                             $gradecat = false;
 151                             break;
 152                         }
 153                     }
 154                 }
 155
 156                 if ($gradecat === false) {
 157                     // items and outcomes in different categories - remove the option
 158                     // TODO: add a "Mixed categories" text instead of removing elements with no explanation
 159                     if ($mform->elementExists('gradecat')) {
 160                         $mform->removeElement('gradecat');
 161                         if ($this->_features->rating) {
 162                             //if supports ratings then the max grade dropdown wasnt added so the grade box can be removed entirely
 163                             $mform->removeElement('modstandardgrade');
 164                         }
 165                     }
 166                 }
 167             }
 168         }
 169
 170         if ($COURSE->groupmodeforce) {
 171             if ($mform->elementExists('groupmode')) {
 172                 $mform->hardFreeze('groupmode'); // groupmode can not be changed if forced from course settings
 173             }
 174         }
 175
 176         // Don't disable/remove groupingid if it is currently set to something,
 177         // otherwise you cannot turn it off at same time as turning off other
 178         // option (MDL-30764)
 179         if (empty($this->_cm) || !$this->_cm->groupingid) {
 180             if ($mform->elementExists('groupmode') and !$mform->elementExists('groupmembersonly') and empty($COURSE->groupmodeforce)) {
 181                 $mform->disabledIf('groupingid', 'groupmode', 'eq', NOGROUPS);
 182
 183             } else if (!$mform->elementExists('groupmode') and $mform->elementExists('groupmembersonly')) {
 184                 $mform->disabledIf('groupingid', 'groupmembersonly', 'notchecked');
 185
 186             } else if (!$mform->elementExists('groupmode') and !$mform->elementExists('groupmembersonly')) {
 187                 // groupings have no use without groupmode or groupmembersonly
 188                 if ($mform->elementExists('groupingid')) {
 189                     $mform->removeElement('groupingid');
 190                 }
 191             }
 192         }
 193
 194         // Completion: If necessary, freeze fields
 195         $completion = new completion_info($COURSE);
 196         if ($completion->is_enabled()) {
 197             // If anybody has completed the activity, these options will be 'locked'
 198             $completedcount = empty($this->_cm)
 199                 ? 0
 200                 : $completion->count_user_data($this->_cm);
 201
 202             $freeze = false;
 203             if (!$completedcount) {
 204                 if ($mform->elementExists('unlockcompletion')) {
 205                     $mform->removeElement('unlockcompletion');
 206                 }
 207                 // Automatically set to unlocked (note: this is necessary
 208                 // in order to make it recalculate completion once the option
 209                 // is changed, maybe someone has completed it now)
 210                 $mform->getElement('completionunlocked')->setValue(1);
 211             } else {
 212                 // Has the element been unlocked?
 213                 if ($mform->exportValue('unlockcompletion')) {
 214                     // Yes, add in warning text and set the hidden variable
 215                     $mform->insertElementBefore(
 216                         $mform->createElement('static', 'completedunlocked',
 217                             get_string('completedunlocked', 'completion'),
 218                             get_string('completedunlockedtext', 'completion')),
 219                         'unlockcompletion');
 220                     $mform->removeElement('unlockcompletion');
 221                     $mform->getElement('completionunlocked')->setValue(1);
 222                 } else {
 223                     // No, add in the warning text with the count (now we know
 224                     // it) before the unlock button
 225                     $mform->insertElementBefore(
 226                         $mform->createElement('static', 'completedwarning',
 227                             get_string('completedwarning', 'completion'),
 228                             get_string('completedwarningtext', 'completion', $completedcount)),
 229                         'unlockcompletion');
 230                     $freeze = true;
 231                 }
 232             }
 233
 234             if ($freeze) {
 235                 $mform->freeze('completion');
 236                 if ($mform->elementExists('completionview')) {
 237                     $mform->freeze('completionview'); // don't use hardFreeze or checkbox value gets lost
 238                 }
 239                 if ($mform->elementExists('completionusegrade')) {
 240                     $mform->freeze('completionusegrade');
 241                 }
 242                 $mform->freeze($this->_customcompletionelements);
 243             }
 244         }
 245
 246         // Availability conditions
 247         if (!empty($CFG->enableavailability) && $this->_cm) {
 248             $ci = new condition_info($this->_cm);
 249             $fullcm=$ci->get_full_course_module();
 250
 251             $num=0;
 252             foreach($fullcm->conditionsgrade as $gradeitemid=>$minmax) {
 253                 $groupelements=$mform->getElement('conditiongradegroup['.$num.']')->getElements();
 254                 $groupelements[0]->setValue($gradeitemid);
 255                 $groupelements[2]->setValue(is_null($minmax->min) ? '' :
 256                         format_float($minmax->min, 5, true, true));
 257                 $groupelements[4]->setValue(is_null($minmax->max) ? '' :
 258                         format_float($minmax->max, 5, true, true));
 259                 $num++;
 260             }
 261
 262             $num = 0;
 263             foreach($fullcm->conditionsfield as $field => $details) {
 264                 $groupelements = $mform->getElement('conditionfieldgroup['.$num.']')->getElements();
 265                 $groupelements[0]->setValue($field);
 266                 $groupelements[1]->setValue(is_null($details->operator) ? '' : $details->operator);
 267                 $groupelements[2]->setValue(is_null($details->value) ? '' : $details->value);
 268                 $num++;
 269             }
 270
 271             if ($completion->is_enabled()) {
 272                 $num=0;
 273                 foreach($fullcm->conditionscompletion as $othercmid=>$state) {
 274                     $groupelements=$mform->getElement('conditioncompletiongroup['.$num.']')->getElements();
 275                     $groupelements[0]->setValue($othercmid);
 276                     $groupelements[1]->setValue($state);
 277                     $num++;
 278                 }
 279             }
 280         }
 281     }
 282
 283     // form verification
 284     function validation($data, $files) {
 285         global $COURSE, $DB;
 286         $errors = parent::validation($data, $files);
 287
 288         $mform =& $this->_form;
 289
 290         $errors = array();
 291
 292         if ($mform->elementExists('name')) {
 293             $name = trim($data['name']);
 294             if ($name == '') {
 295                 $errors['name'] = get_string('required');
 296             }
 297         }
 298
 299         $grade_item = grade_item::fetch(array('itemtype'=>'mod', 'itemmodule'=>$data['modulename'],
 300                      'iteminstance'=>$data['instance'], 'itemnumber'=>0, 'courseid'=>$COURSE->id));
 301         if ($data['coursemodule']) {
 302             $cm = $DB->get_record('course_modules', array('id'=>$data['coursemodule']));
 303         } else {
 304             $cm = null;
 305         }
 306
 307         if ($mform->elementExists('cmidnumber')) {
 308             // verify the idnumber
 309             if (!grade_verify_idnumber($data['cmidnumber'], $COURSE->id, $grade_item, $cm)) {
 310                 $errors['cmidnumber'] = get_string('idnumbertaken');
 311             }
 312         }
 313
 314         // Completion: Don't let them choose automatic completion without turning
 315         // on some conditions. Ignore this check when completion settings are
 316         // locked, as the options are then disabled.
 317         if (array_key_exists('completion', $data) &&
 318                 $data['completion'] == COMPLETION_TRACKING_AUTOMATIC &&
 319                 !empty($data['completionunlocked'])) {
 320             if (empty($data['completionview']) && empty($data['completionusegrade']) &&
 321                 !$this->completion_rule_enabled($data)) {
 322                 $errors['completion'] = get_string('badautocompletion', 'completion');
 323             }
 324         }
 325
 326         // Conditions: Don't let them set dates which make no sense
 327         if (array_key_exists('availablefrom', $data) &&
 328             $data['availablefrom'] && $data['availableuntil'] &&
 329             $data['availablefrom'] >= $data['availableuntil']) {
 330             $errors['availablefrom'] = get_string('badavailabledates', 'condition');
 331         }
 332
 333         // Conditions: Verify that the grade conditions are numbers, and make sense.
 334         if (array_key_exists('conditiongradegroup', $data)) {
 335             foreach ($data['conditiongradegroup'] as $i => $gradedata) {
 336                 if ($gradedata['conditiongrademin'] !== '' &&
 337                         !is_numeric(unformat_float($gradedata['conditiongrademin']))) {
 338                     $errors["conditiongradegroup[{$i}]"] = get_string('gradesmustbenumeric', 'condition');
 339                     continue;
 340                 }
 341                 if ($gradedata['conditiongrademax'] !== '' &&
 342                         !is_numeric(unformat_float($gradedata['conditiongrademax']))) {
 343                     $errors["conditiongradegroup[{$i}]"] = get_string('gradesmustbenumeric', 'condition');
 344                     continue;
 345                 }
 346                 if ($gradedata['conditiongrademin'] !== '' && $gradedata['conditiongrademax'] !== '' &&
 347                         unformat_float($gradedata['conditiongrademax']) <= unformat_float($gradedata['conditiongrademin'])) {
 348                     $errors["conditiongradegroup[{$i}]"] = get_string('badgradelimits', 'condition');
 349                     continue;
 350                 }
 351                 if ($gradedata['conditiongrademin'] === '' && $gradedata['conditiongrademax'] === '' &&
 352                         $gradedata['conditiongradeitemid']) {
 353                     $errors["conditiongradegroup[{$i}]"] = get_string('gradeitembutnolimits', 'condition');
 354                     continue;
 355                 }
 356                 if (($gradedata['conditiongrademin'] !== '' || $gradedata['conditiongrademax'] !== '') &&
 357                         !$gradedata['conditiongradeitemid']) {
 358                     $errors["conditiongradegroup[{$i}]"] = get_string('gradelimitsbutnoitem', 'condition');
 359                     continue;
 360                 }
 361             }
 362         }
 363
 364         // Conditions: Verify that the user profile field has not been declared more than once
 365         if (array_key_exists('conditionfieldgroup', $data)) {
 366             // Array to store the existing fields
 367             $arrcurrentfields = array();
 368             // Error message displayed if any condition is declared more than once. We use lang string because
 369             // this way we don't actually generate the string unless there is an error.
 370             $stralreadydeclaredwarning = new lang_string('fielddeclaredmultipletimes', 'condition');
 371             foreach ($data['conditionfieldgroup'] as $i => $fielddata) {
 372                 if ($fielddata['conditionfield'] == 0) { // Don't need to bother if none is selected
 373                     continue;
 374                 }
 375                 if (in_array($fielddata['conditionfield'], $arrcurrentfields)) {
 376                     $errors["conditionfieldgroup[{$i}]"] = $stralreadydeclaredwarning->out();
 377                 }
 378                 // Add the field to the array
 379                 $arrcurrentfields[] = $fielddata['conditionfield'];
 380             }
 381         }
 382
 383         return $errors;
 384     }
 385
 386     /**
 387      * Load in existing data as form defaults. Usually new entry defaults are stored directly in
 388      * form definition (new entry form); this function is used to load in data where values
 389      * already exist and data is being edited (edit entry form).
 390      *
 391      * @param mixed $default_values object or array of default values
 392      */
 393     function set_data($default_values) {
 394         if (is_object($default_values)) {
 395             $default_values = (array)$default_values;
 396         }
 397
 398         $this->data_preprocessing($default_values);
 399         parent::set_data($default_values);
 400     }
 401
 402     /**
 403      * Adds all the standard elements to a form to edit the settings for an activity module.
 404      */
 405     function standard_coursemodule_elements(){
 406         global $COURSE, $CFG, $DB;
 407         $mform =& $this->_form;
 408
 409         $this->_outcomesused = false;
 410         if ($this->_features->outcomes) {
 411             if ($outcomes = grade_outcome::fetch_all_available($COURSE->id)) {
 412                 $this->_outcomesused = true;
 413                 $mform->addElement('header', 'modoutcomes', get_string('outcomes', 'grades'));
 414                 foreach($outcomes as $outcome) {
 415                     $mform->addElement('advcheckbox', 'outcome_'.$outcome->id, $outcome->get_name());
 416                 }
 417             }
 418         }
 419
 420
 421         if ($this->_features->rating) {
 422             require_once($CFG->dirroot.'/rating/lib.php');
 423             $rm = new rating_manager();
 424
 425             $mform->addElement('header', 'modstandardratings', get_string('ratings', 'rating'));
 426
 427             $permission=CAP_ALLOW;
 428             $rolenamestring = null;
 429             if (!empty($this->_cm)) {
 430                 $context = context_module::instance($this->_cm->id);
 431
 432                 $rolenames = get_role_names_with_caps_in_context($context, array('moodle/rating:rate', 'mod/'.$this->_cm->modname.':rate'));
 433                 $rolenamestring = implode(', ', $rolenames);
 434             } else {
 435                 $rolenamestring = get_string('capabilitychecknotavailable','rating');
 436             }
 437             $mform->addElement('static', 'rolewarning', get_string('rolewarning','rating'), $rolenamestring);
 438             $mform->addHelpButton('rolewarning', 'rolewarning', 'rating');
 439
 440             $mform->addElement('select', 'assessed', get_string('aggregatetype', 'rating') , $rm->get_aggregate_types());
 441             $mform->setDefault('assessed', 0);
 442             $mform->addHelpButton('assessed', 'aggregatetype', 'rating');
 443
 444             $mform->addElement('modgrade', 'scale', get_string('scale'), false);
 445             $mform->disabledIf('scale', 'assessed', 'eq', 0);
 446
 447             $mform->addElement('checkbox', 'ratingtime', get_string('ratingtime', 'rating'));
 448             $mform->disabledIf('ratingtime', 'assessed', 'eq', 0);
 449
 450             $mform->addElement('date_time_selector', 'assesstimestart', get_string('from'));
 451             $mform->disabledIf('assesstimestart', 'assessed', 'eq', 0);
 452             $mform->disabledIf('assesstimestart', 'ratingtime');
 453
 454             $mform->addElement('date_time_selector', 'assesstimefinish', get_string('to'));
 455             $mform->disabledIf('assesstimefinish', 'assessed', 'eq', 0);
 456             $mform->disabledIf('assesstimefinish', 'ratingtime');
 457         }
 458
 459         //doing this here means splitting up the grade related settings on the lesson settings page
 460         //$this->standard_grading_coursemodule_elements();
 461
 462         $mform->addElement('header', 'modstandardelshdr', get_string('modstandardels', 'form'));
 463
 464         $mform->addElement('modvisible', 'visible', get_string('visible'));
 465         if (!empty($this->_cm)) {
 466             $context = context_module::instance($this->_cm->id);
 467             if (!has_capability('moodle/course:activityvisibility', $context)) {
 468                 $mform->hardFreeze('visible');
 469             }
 470         }
 471
 472         if ($this->_features->idnumber) {
 473             $mform->addElement('text', 'cmidnumber', get_string('idnumbermod'));
 474             $mform->setType('cmidnumber', PARAM_RAW);
 475             $mform->addHelpButton('cmidnumber', 'idnumbermod');
 476         }
 477
 478         if ($this->_features->groups) {
 479             $options = array(NOGROUPS       => get_string('groupsnone'),
 480                              SEPARATEGROUPS => get_string('groupsseparate'),
 481                              VISIBLEGROUPS  => get_string('groupsvisible'));
 482             $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $options, NOGROUPS);
 483             $mform->addHelpButton('groupmode', 'groupmode', 'group');
 484         }
 485
 486         if ($this->_features->groupings or $this->_features->groupmembersonly) {
 487             //groupings selector - used for normal grouping mode or also when restricting access with groupmembersonly
 488             $options = array();
 489             $options[0] = get_string('none');
 490             if ($groupings = $DB->get_records('groupings', array('courseid'=>$COURSE->id))) {
 491                 foreach ($groupings as $grouping) {
 492                     $options[$grouping->id] = format_string($grouping->name);
 493                 }
 494             }
 495             $mform->addElement('select', 'groupingid', get_string('grouping', 'group'), $options);
 496             $mform->addHelpButton('groupingid', 'grouping', 'group');
 497         }
 498
 499         if ($this->_features->groupmembersonly) {
 500             $mform->addElement('checkbox', 'groupmembersonly', get_string('groupmembersonly', 'group'));
 501             $mform->addHelpButton('groupmembersonly', 'groupmembersonly', 'group');
 502         }
 503
 504         if (!empty($CFG->enableavailability)) {
 505             // String used by conditions
 506             $strnone = get_string('none','condition');
 507             // Conditional availability
 508
 509             // Available from/to defaults to midnight because then the display
 510             // will be nicer where it tells users when they can access it (it
 511             // shows only the date and not time).
 512             $date = usergetdate(time());
 513             $midnight = make_timestamp($date['year'], $date['mon'], $date['mday']);
 514
 515             // From/until controls
 516             $mform->addElement('header', 'availabilityconditionsheader',
 517                     get_string('availabilityconditions', 'condition'));
 518             $mform->addElement('date_time_selector', 'availablefrom',
 519                     get_string('availablefrom', 'condition'),
 520                     array('optional' => true, 'defaulttime' => $midnight));
 521             $mform->addHelpButton('availablefrom', 'availablefrom', 'condition');
 522             $mform->addElement('date_time_selector', 'availableuntil',
 523                     get_string('availableuntil', 'condition'),
 524                     array('optional' => true, 'defaulttime' => $midnight));
 525
 526             // Conditions based on grades
 527             $gradeoptions = array();
 528             $items = grade_item::fetch_all(array('courseid'=>$COURSE->id));
 529             $items = $items ? $items : array();
 530             foreach($items as $id=>$item) {
 531                 // Do not include grades for current item
 532                 if (!empty($this->_cm) && $this->_cm->instance == $item->iteminstance
 533                     && $this->_cm->modname == $item->itemmodule
 534                     && $item->itemtype == 'mod') {
 535                     continue;
 536                 }
 537                 $gradeoptions[$id] = $item->get_name();
 538             }
 539             asort($gradeoptions);
 540             $gradeoptions = array(0 => $strnone) + $gradeoptions;
 541
 542             $grouparray = array();
 543             $grouparray[] =& $mform->createElement('select','conditiongradeitemid','',$gradeoptions);
 544             $grouparray[] =& $mform->createElement('static', '', '',' '.get_string('grade_atleast','condition').' ');
 545             $grouparray[] =& $mform->createElement('text', 'conditiongrademin','',array('size'=>3));
 546             $grouparray[] =& $mform->createElement('static', '', '','% '.get_string('grade_upto','condition').' ');
 547             $grouparray[] =& $mform->createElement('text', 'conditiongrademax','',array('size'=>3));
 548             $grouparray[] =& $mform->createElement('static', '', '','%');
 549             $group = $mform->createElement('group','conditiongradegroup',
 550                 get_string('gradecondition', 'condition'),$grouparray);
 551
 552             // Get version with condition info and store it so we don't ask
 553             // twice
 554             if(!empty($this->_cm)) {
 555                 $ci = new condition_info($this->_cm, CONDITION_MISSING_EXTRATABLE);
 556                 $this->_cm = $ci->get_full_course_module();
 557                 $count = count($this->_cm->conditionsgrade)+1;
 558                 $fieldcount = count($this->_cm->conditionsfield) + 1;
 559             } else {
 560                 $count = 1;
 561                 $fieldcount = 1;
 562             }
 563
 564             $this->repeat_elements(array($group), $count, array(
 565                 'conditiongradegroup[conditiongrademin]' => array('type' => PARAM_RAW),
 566                 'conditiongradegroup[conditiongrademax]' => array('type' => PARAM_RAW)
 567                 ), 'conditiongraderepeats', 'conditiongradeadds', 2, get_string('addgrades', 'condition'), true);
 568             $mform->addHelpButton('conditiongradegroup[0]', 'gradecondition', 'condition');
 569
 570             // Conditions based on user fields
 571             $operators = condition_info::get_condition_user_field_operators();
 572             $useroptions = condition_info::get_condition_user_fields(
 573                     array('context' => $this->context));
 574             asort($useroptions);
 575
 576             $useroptions = array(0 => $strnone) + $useroptions;
 577             $grouparray = array();
 578             $grouparray[] =& $mform->createElement('select', 'conditionfield', '', $useroptions);
 579             $grouparray[] =& $mform->createElement('select', 'conditionfieldoperator', '', $operators);
 580             $grouparray[] =& $mform->createElement('text', 'conditionfieldvalue');
 581             $group = $mform->createElement('group', 'conditionfieldgroup', get_string('userfield', 'condition'), $grouparray);
 582
 583             $this->repeat_elements(array($group), $fieldcount, array(
 584                 'conditionfieldgroup[conditionfieldvalue]' => array('type' => PARAM_RAW)),
 585                 'conditionfieldrepeats', 'conditionfieldadds', 2, get_string('adduserfields', 'condition'), true);
 586             $mform->addHelpButton('conditionfieldgroup[0]', 'userfield', 'condition');
 587
 588             // Conditions based on completion
 589             $completion = new completion_info($COURSE);
 590             if ($completion->is_enabled()) {
 591                 $completionoptions = array();
 592                 $modinfo = get_fast_modinfo($COURSE);
 593                 foreach($modinfo->cms as $id=>$cm) {
 594                     // Add each course-module if it:
 595                     // (a) has completion turned on
 596                     // (b) is not the same as current course-module
 597                     if ($cm->completion && (empty($this->_cm) || $this->_cm->id != $id)) {
 598                         $completionoptions[$id]=$cm->name;
 599                     }
 600                 }
 601                 asort($completionoptions);
 602                 $completionoptions = array(0 => $strnone) + $completionoptions;
 603
 604                 $completionvalues=array(
 605                     COMPLETION_COMPLETE=>get_string('completion_complete','condition'),
 606                     COMPLETION_INCOMPLETE=>get_string('completion_incomplete','condition'),
 607                     COMPLETION_COMPLETE_PASS=>get_string('completion_pass','condition'),
 608                     COMPLETION_COMPLETE_FAIL=>get_string('completion_fail','condition'));
 609
 610                 $grouparray = array();
 611                 $grouparray[] =& $mform->createElement('select','conditionsourcecmid','',$completionoptions);
 612                 $grouparray[] =& $mform->createElement('select','conditionrequiredcompletion','',$completionvalues);
 613                 $group = $mform->createElement('group','conditioncompletiongroup',
 614                     get_string('completioncondition', 'condition'),$grouparray);
 615
 616                 $count = empty($this->_cm) ? 1 : count($this->_cm->conditionscompletion)+1;
 617                 $this->repeat_elements(array($group),$count,array(),
 618                     'conditioncompletionrepeats','conditioncompletionadds',2,
 619                     get_string('addcompletions','condition'),true);
 620                 $mform->addHelpButton('conditioncompletiongroup[0]', 'completioncondition', 'condition');
 621             }
 622
 623             // Do we display availability info to students?
 624             $mform->addElement('select', 'showavailability', get_string('showavailability', 'condition'),
 625                     array(CONDITION_STUDENTVIEW_SHOW=>get_string('showavailability_show', 'condition'),
 626                     CONDITION_STUDENTVIEW_HIDE=>get_string('showavailability_hide', 'condition')));
 627             $mform->setDefault('showavailability', CONDITION_STUDENTVIEW_SHOW);
 628         }
 629
 630         // Conditional activities: completion tracking section
 631         if(!isset($completion)) {
 632             $completion = new completion_info($COURSE);
 633         }
 634         if ($completion->is_enabled()) {
 635             $mform->addElement('header', 'activitycompletionheader', get_string('activitycompletion', 'completion'));
 636
 637             // Unlock button for if people have completed it (will
 638             // be removed in definition_after_data if they haven't)
 639             $mform->addElement('submit', 'unlockcompletion', get_string('unlockcompletion', 'completion'));
 640             $mform->registerNoSubmitButton('unlockcompletion');
 641             $mform->addElement('hidden', 'completionunlocked', 0);
 642             $mform->setType('completionunlocked', PARAM_INT);
 643
 644             $mform->addElement('select', 'completion', get_string('completion', 'completion'),
 645                 array(COMPLETION_TRACKING_NONE=>get_string('completion_none', 'completion'),
 646                 COMPLETION_TRACKING_MANUAL=>get_string('completion_manual', 'completion')));
 647             $mform->setDefault('completion', $this->_features->defaultcompletion
 648                 ? COMPLETION_TRACKING_MANUAL
 649                 : COMPLETION_TRACKING_NONE);
 650             $mform->addHelpButton('completion', 'completion', 'completion');
 651
 652             // Automatic completion once you view it
 653             $gotcompletionoptions = false;
 654             if (plugin_supports('mod', $this->_modname, FEATURE_COMPLETION_TRACKS_VIEWS, false)) {
 655                 $mform->addElement('checkbox', 'completionview', get_string('completionview', 'completion'),
 656                     get_string('completionview_desc', 'completion'));
 657                 $mform->disabledIf('completionview', 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 658                 $gotcompletionoptions = true;
 659             }
 660
 661             // Automatic completion once it's graded
 662             if (plugin_supports('mod', $this->_modname, FEATURE_GRADE_HAS_GRADE, false)) {
 663                 $mform->addElement('checkbox', 'completionusegrade', get_string('completionusegrade', 'completion'),
 664                     get_string('completionusegrade_desc', 'completion'));
 665                 $mform->disabledIf('completionusegrade', 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 666                 $mform->addHelpButton('completionusegrade', 'completionusegrade', 'completion');
 667                 $gotcompletionoptions = true;
 668             }
 669
 670             // Automatic completion according to module-specific rules
 671             $this->_customcompletionelements = $this->add_completion_rules();
 672             foreach ($this->_customcompletionelements as $element) {
 673                 $mform->disabledIf($element, 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 674             }
 675
 676             $gotcompletionoptions = $gotcompletionoptions ||
 677                 count($this->_customcompletionelements)>0;
 678
 679             // Automatic option only appears if possible
 680             if ($gotcompletionoptions) {
 681                 $mform->getElement('completion')->addOption(
 682                     get_string('completion_automatic', 'completion'),
 683                     COMPLETION_TRACKING_AUTOMATIC);
 684             }
 685
 686             // Completion expected at particular date? (For progress tracking)
 687             $mform->addElement('date_selector', 'completionexpected', get_string('completionexpected', 'completion'), array('optional'=>true));
 688             $mform->addHelpButton('completionexpected', 'completionexpected', 'completion');
 689             $mform->disabledIf('completionexpected', 'completion', 'eq', COMPLETION_TRACKING_NONE);
 690         }
 691
 692         $this->standard_hidden_coursemodule_elements();
 693     }
 694
 695     /**
 696      * Can be overridden to add custom completion rules if the module wishes
 697      * them. If overriding this, you should also override completion_rule_enabled.
 698      * <p>
 699      * Just add elements to the form as needed and return the list of IDs. The
 700      * system will call disabledIf and handle other behaviour for each returned
 701      * ID.
 702      * @return array Array of string IDs of added items, empty array if none
 703      */
 704     function add_completion_rules() {
 705         return array();
 706     }
 707
 708     /**
 709      * Called during validation. Override to indicate, based on the data, whether
 710      * a custom completion rule is enabled (selected).
 711      *
 712      * @param array $data Input data (not yet validated)
 713      * @return bool True if one or more rules is enabled, false if none are;
 714      *   default returns false
 715      */
 716     function completion_rule_enabled($data) {
 717         return false;
 718     }
 719
 720     function standard_hidden_coursemodule_elements(){
 721         $mform =& $this->_form;
 722         $mform->addElement('hidden', 'course', 0);
 723         $mform->setType('course', PARAM_INT);
 724
 725         $mform->addElement('hidden', 'coursemodule', 0);
 726         $mform->setType('coursemodule', PARAM_INT);
 727
 728         $mform->addElement('hidden', 'section', 0);
 729         $mform->setType('section', PARAM_INT);
 730
 731         $mform->addElement('hidden', 'module', 0);
 732         $mform->setType('module', PARAM_INT);
 733
 734         $mform->addElement('hidden', 'modulename', '');
 735         $mform->setType('modulename', PARAM_PLUGIN);
 736
 737         $mform->addElement('hidden', 'instance', 0);
 738         $mform->setType('instance', PARAM_INT);
 739
 740         $mform->addElement('hidden', 'add', 0);
 741         $mform->setType('add', PARAM_ALPHA);
 742
 743         $mform->addElement('hidden', 'update', 0);
 744         $mform->setType('update', PARAM_INT);
 745
 746         $mform->addElement('hidden', 'return', 0);
 747         $mform->setType('return', PARAM_BOOL);
 748
 749         $mform->addElement('hidden', 'sr', 0);
 750         $mform->setType('sr', PARAM_INT);
 751     }
 752
 753     public function standard_grading_coursemodule_elements() {
 754         global $COURSE, $CFG;
 755         $mform =& $this->_form;
 756
 757         if ($this->_features->hasgrades) {
 758
 759             if (!$this->_features->rating || $this->_features->gradecat) {
 760                 $mform->addElement('header', 'modstandardgrade', get_string('grade'));
 761             }
 762
 763             //if supports grades and grades arent being handled via ratings
 764             if (!$this->_features->rating) {
 765                 $mform->addElement('modgrade', 'grade', get_string('grade'));
 766                 $mform->setDefault('grade', 100);
 767             }
 768
 769             if ($this->_features->advancedgrading
 770                     and !empty($this->current->_advancedgradingdata['methods'])
 771                     and !empty($this->current->_advancedgradingdata['areas'])) {
 772
 773                 if (count($this->current->_advancedgradingdata['areas']) == 1) {
 774                     // if there is just one gradable area (most cases), display just the selector
 775                     // without its name to make UI simplier
 776                     $areadata = reset($this->current->_advancedgradingdata['areas']);
 777                     $areaname = key($this->current->_advancedgradingdata['areas']);
 778                     $mform->addElement('select', 'advancedgradingmethod_'.$areaname,
 779                         get_string('gradingmethod', 'core_grading'), $this->current->_advancedgradingdata['methods']);
 780                     $mform->addHelpButton('advancedgradingmethod_'.$areaname, 'gradingmethod', 'core_grading');
 781
 782                 } else {
 783                     // the module defines multiple gradable areas, display a selector
 784                     // for each of them together with a name of the area
 785                     $areasgroup = array();
 786                     foreach ($this->current->_advancedgradingdata['areas'] as $areaname => $areadata) {
 787                         $areasgroup[] = $mform->createElement('select', 'advancedgradingmethod_'.$areaname,
 788                             $areadata['title'], $this->current->_advancedgradingdata['methods']);
 789                         $areasgroup[] = $mform->createElement('static', 'advancedgradingareaname_'.$areaname, '', $areadata['title']);
 790                     }
 791                     $mform->addGroup($areasgroup, 'advancedgradingmethodsgroup', get_string('gradingmethods', 'core_grading'),
 792                         array(' ', '<br />'), false);
 793                 }
 794             }
 795
 796             if ($this->_features->gradecat) {
 797                 $mform->addElement('select', 'gradecat',
 798                         get_string('gradecategoryonmodform', 'grades'),
 799                         grade_get_categories_menu($COURSE->id, $this->_outcomesused));
 800                 $mform->addHelpButton('gradecat', 'gradecategoryonmodform', 'grades');
 801             }
 802         }
 803     }
 804
 805     function add_intro_editor($required=false, $customlabel=null) {
 806         if (!$this->_features->introeditor) {
 807             // intro editor not supported in this module
 808             return;
 809         }
 810
 811         $mform = $this->_form;
 812         $label = is_null($customlabel) ? get_string('moduleintro') : $customlabel;
 813
 814         $mform->addElement('editor', 'introeditor', $label, array('rows' => 3), array('maxfiles' => EDITOR_UNLIMITED_FILES,
 815             'noclean' => true, 'context' => $this->context, 'collapsed' => true));
 816         $mform->setType('introeditor', PARAM_RAW); // no XSS prevention here, users must be trusted
 817         if ($required) {
 818             $mform->addRule('introeditor', get_string('required'), 'required', null, 'client');
 819         }
 820
 821         // If the 'show description' feature is enabled, this checkbox appears
 822         // below the intro.
 823         if ($this->_features->showdescription) {
 824             $mform->addElement('checkbox', 'showdescription', get_string('showdescription'));
 825             $mform->addHelpButton('showdescription', 'showdescription');
 826         }
 827     }
 828
 829     /**
 830      * Overriding formslib's add_action_buttons() method, to add an extra submit "save changes and return" button.
 831      *
 832      * @param bool $cancel show cancel button
 833      * @param string $submitlabel null means default, false means none, string is label text
 834      * @param string $submit2label  null means default, false means none, string is label text
 835      * @return void
 836      */
 837     function add_action_buttons($cancel=true, $submitlabel=null, $submit2label=null) {
 838         if (is_null($submitlabel)) {
 839             $submitlabel = get_string('savechangesanddisplay');
 840         }
 841
 842         if (is_null($submit2label)) {
 843             $submit2label = get_string('savechangesandreturntocourse');
 844         }
 845
 846         $mform = $this->_form;
 847
 848         // elements in a row need a group
 849         $buttonarray = array();
 850
 851         if ($submit2label !== false) {
 852             $buttonarray[] = &$mform->createElement('submit', 'submitbutton2', $submit2label);
 853         }
 854
 855         if ($submitlabel !== false) {
 856             $buttonarray[] = &$mform->createElement('submit', 'submitbutton', $submitlabel);
 857         }
 858
 859         if ($cancel) {
 860             $buttonarray[] = &$mform->createElement('cancel');
 861         }
 862
 863         $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 864         $mform->setType('buttonar', PARAM_RAW);
 865         $mform->closeHeaderBefore('buttonar');
 866     }
 867 }
 868
 869