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 = get_context_instance(CONTEXT_MODULE, $this->_cm->id);
  59         } else {
  60             $this->context = get_context_instance(CONTEXT_COURSE, $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                 // These numbers are always in the format 0.00000 - the rtrims remove any final zeros and,
 256                 // if it is a whole number, the decimal place.
 257                 $groupelements[2]->setValue(is_null($minmax->min)?'':rtrim(rtrim($minmax->min,'0'),'.'));
 258                 $groupelements[4]->setValue(is_null($minmax->max)?'':rtrim(rtrim($minmax->max,'0'),'.'));
 259                 $num++;
 260             }
 261
 262             if ($completion->is_enabled()) {
 263                 $num=0;
 264                 foreach($fullcm->conditionscompletion as $othercmid=>$state) {
 265                     $groupelements=$mform->getElement('conditioncompletiongroup['.$num.']')->getElements();
 266                     $groupelements[0]->setValue($othercmid);
 267                     $groupelements[1]->setValue($state);
 268                     $num++;
 269                 }
 270             }
 271         }
 272     }
 273
 274     // form verification
 275     function validation($data, $files) {
 276         global $COURSE, $DB;
 277         $errors = parent::validation($data, $files);
 278
 279         $mform =& $this->_form;
 280
 281         $errors = array();
 282
 283         if ($mform->elementExists('name')) {
 284             $name = trim($data['name']);
 285             if ($name == '') {
 286                 $errors['name'] = get_string('required');
 287             }
 288         }
 289
 290         $grade_item = grade_item::fetch(array('itemtype'=>'mod', 'itemmodule'=>$data['modulename'],
 291                      'iteminstance'=>$data['instance'], 'itemnumber'=>0, 'courseid'=>$COURSE->id));
 292         if ($data['coursemodule']) {
 293             $cm = $DB->get_record('course_modules', array('id'=>$data['coursemodule']));
 294         } else {
 295             $cm = null;
 296         }
 297
 298         if ($mform->elementExists('cmidnumber')) {
 299             // verify the idnumber
 300             if (!grade_verify_idnumber($data['cmidnumber'], $COURSE->id, $grade_item, $cm)) {
 301                 $errors['cmidnumber'] = get_string('idnumbertaken');
 302             }
 303         }
 304
 305         // Completion: Don't let them choose automatic completion without turning
 306         // on some conditions
 307         if (array_key_exists('completion', $data) && $data['completion']==COMPLETION_TRACKING_AUTOMATIC) {
 308             if (empty($data['completionview']) && empty($data['completionusegrade']) &&
 309                 !$this->completion_rule_enabled($data)) {
 310                 $errors['completion'] = get_string('badautocompletion', 'completion');
 311             }
 312         }
 313
 314         // Conditions: Don't let them set dates which make no sense
 315         if (array_key_exists('availablefrom', $data) &&
 316             $data['availablefrom'] && $data['availableuntil'] &&
 317             $data['availablefrom'] >= $data['availableuntil']) {
 318             $errors['availablefrom'] = get_string('badavailabledates', 'condition');
 319         }
 320
 321         // Conditions: Verify that the grade conditions are numbers, and make sense.
 322         if (array_key_exists('conditiongradegroup', $data)) {
 323             foreach ($data['conditiongradegroup'] as $i => $gradedata) {
 324                 if ($gradedata['conditiongrademin'] !== '' && !is_numeric($gradedata['conditiongrademin'])) {
 325                     $errors["conditiongradegroup[{$i}]"] = get_string('gradesmustbenumeric', 'condition');
 326                     continue;
 327                 }
 328                 if ($gradedata['conditiongrademax'] !== '' && !is_numeric($gradedata['conditiongrademax'])) {
 329                     $errors["conditiongradegroup[{$i}]"] = get_string('gradesmustbenumeric', 'condition');
 330                     continue;
 331                 }
 332                 if ($gradedata['conditiongrademin'] !== '' && $gradedata['conditiongrademax'] !== '' &&
 333                         $gradedata['conditiongrademax'] < $gradedata['conditiongrademin']) {
 334                     $errors["conditiongradegroup[{$i}]"] = get_string('badgradelimits', 'condition');
 335                     continue;
 336                 }
 337                 if ($gradedata['conditiongrademin'] === '' && $gradedata['conditiongrademax'] === '' &&
 338                         $gradedata['conditiongradeitemid']) {
 339                     $errors["conditiongradegroup[{$i}]"] = get_string('gradeitembutnolimits', 'condition');
 340                     continue;
 341                 }
 342                 if (($gradedata['conditiongrademin'] !== '' || $gradedata['conditiongrademax'] !== '') &&
 343                         !$gradedata['conditiongradeitemid']) {
 344                     $errors["conditiongradegroup[{$i}]"] = get_string('gradelimitsbutnoitem', 'condition');
 345                     continue;
 346                 }
 347             }
 348         }
 349
 350         return $errors;
 351     }
 352
 353     /**
 354      * Load in existing data as form defaults. Usually new entry defaults are stored directly in
 355      * form definition (new entry form); this function is used to load in data where values
 356      * already exist and data is being edited (edit entry form).
 357      *
 358      * @param mixed $default_values object or array of default values
 359      */
 360     function set_data($default_values) {
 361         if (is_object($default_values)) {
 362             $default_values = (array)$default_values;
 363         }
 364
 365         $this->data_preprocessing($default_values);
 366         parent::set_data($default_values);
 367     }
 368
 369     /**
 370      * Adds all the standard elements to a form to edit the settings for an activity module.
 371      */
 372     function standard_coursemodule_elements(){
 373         global $COURSE, $CFG, $DB;
 374         $mform =& $this->_form;
 375
 376         $this->_outcomesused = false;
 377         if ($this->_features->outcomes) {
 378             if ($outcomes = grade_outcome::fetch_all_available($COURSE->id)) {
 379                 $this->_outcomesused = true;
 380                 $mform->addElement('header', 'modoutcomes', get_string('outcomes', 'grades'));
 381                 foreach($outcomes as $outcome) {
 382                     $mform->addElement('advcheckbox', 'outcome_'.$outcome->id, $outcome->get_name());
 383                 }
 384             }
 385         }
 386
 387
 388         if ($this->_features->rating) {
 389             require_once($CFG->dirroot.'/rating/lib.php');
 390             $rm = new rating_manager();
 391
 392             $mform->addElement('header', 'modstandardratings', get_string('ratings', 'rating'));
 393
 394             $permission=CAP_ALLOW;
 395             $rolenamestring = null;
 396             if (!empty($this->_cm)) {
 397                 $context = get_context_instance(CONTEXT_MODULE, $this->_cm->id);
 398
 399                 $rolenames = get_role_names_with_caps_in_context($context, array('moodle/rating:rate', 'mod/'.$this->_cm->modname.':rate'));
 400                 $rolenamestring = implode(', ', $rolenames);
 401             } else {
 402                 $rolenamestring = get_string('capabilitychecknotavailable','rating');
 403             }
 404             $mform->addElement('static', 'rolewarning', get_string('rolewarning','rating'), $rolenamestring);
 405             $mform->addHelpButton('rolewarning', 'rolewarning', 'rating');
 406
 407             $mform->addElement('select', 'assessed', get_string('aggregatetype', 'rating') , $rm->get_aggregate_types());
 408             $mform->setDefault('assessed', 0);
 409             $mform->addHelpButton('assessed', 'aggregatetype', 'rating');
 410
 411             $mform->addElement('modgrade', 'scale', get_string('scale'), false);
 412             $mform->disabledIf('scale', 'assessed', 'eq', 0);
 413
 414             $mform->addElement('checkbox', 'ratingtime', get_string('ratingtime', 'rating'));
 415             $mform->disabledIf('ratingtime', 'assessed', 'eq', 0);
 416
 417             $mform->addElement('date_time_selector', 'assesstimestart', get_string('from'));
 418             $mform->disabledIf('assesstimestart', 'assessed', 'eq', 0);
 419             $mform->disabledIf('assesstimestart', 'ratingtime');
 420
 421             $mform->addElement('date_time_selector', 'assesstimefinish', get_string('to'));
 422             $mform->disabledIf('assesstimefinish', 'assessed', 'eq', 0);
 423             $mform->disabledIf('assesstimefinish', 'ratingtime');
 424         }
 425
 426         //doing this here means splitting up the grade related settings on the lesson settings page
 427         //$this->standard_grading_coursemodule_elements();
 428
 429         $mform->addElement('header', 'modstandardelshdr', get_string('modstandardels', 'form'));
 430         if ($this->_features->groups) {
 431             $options = array(NOGROUPS       => get_string('groupsnone'),
 432                              SEPARATEGROUPS => get_string('groupsseparate'),
 433                              VISIBLEGROUPS  => get_string('groupsvisible'));
 434             $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $options, NOGROUPS);
 435             $mform->addHelpButton('groupmode', 'groupmode', 'group');
 436         }
 437
 438         if ($this->_features->groupings or $this->_features->groupmembersonly) {
 439             //groupings selector - used for normal grouping mode or also when restricting access with groupmembersonly
 440             $options = array();
 441             $options[0] = get_string('none');
 442             if ($groupings = $DB->get_records('groupings', array('courseid'=>$COURSE->id))) {
 443                 foreach ($groupings as $grouping) {
 444                     $options[$grouping->id] = format_string($grouping->name);
 445                 }
 446             }
 447             $mform->addElement('select', 'groupingid', get_string('grouping', 'group'), $options);
 448             $mform->addHelpButton('groupingid', 'grouping', 'group');
 449             $mform->setAdvanced('groupingid');
 450         }
 451
 452         if ($this->_features->groupmembersonly) {
 453             $mform->addElement('checkbox', 'groupmembersonly', get_string('groupmembersonly', 'group'));
 454             $mform->addHelpButton('groupmembersonly', 'groupmembersonly', 'group');
 455             $mform->setAdvanced('groupmembersonly');
 456         }
 457
 458         $mform->addElement('modvisible', 'visible', get_string('visible'));
 459         if (!empty($this->_cm)) {
 460             $context = get_context_instance(CONTEXT_MODULE, $this->_cm->id);
 461             if (!has_capability('moodle/course:activityvisibility', $context)) {
 462                 $mform->hardFreeze('visible');
 463             }
 464         }
 465
 466         if ($this->_features->idnumber) {
 467             $mform->addElement('text', 'cmidnumber', get_string('idnumbermod'));
 468             $mform->addHelpButton('cmidnumber', 'idnumbermod');
 469         }
 470
 471         if (!empty($CFG->enableavailability)) {
 472             // Conditional availability
 473
 474             // Available from/to defaults to midnight because then the display
 475             // will be nicer where it tells users when they can access it (it
 476             // shows only the date and not time).
 477             $date = usergetdate(time());
 478             $midnight = make_timestamp($date['year'], $date['mon'], $date['mday']);
 479
 480             // From/until controls
 481             $mform->addElement('header', 'availabilityconditionsheader',
 482                     get_string('availabilityconditions', 'condition'));
 483             $mform->addElement('date_time_selector', 'availablefrom',
 484                     get_string('availablefrom', 'condition'),
 485                     array('optional' => true, 'defaulttime' => $midnight));
 486             $mform->addHelpButton('availablefrom', 'availablefrom', 'condition');
 487             $mform->addElement('date_time_selector', 'availableuntil',
 488                     get_string('availableuntil', 'condition'),
 489                     array('optional' => true, 'defaulttime' => $midnight));
 490
 491             // Conditions based on grades
 492             $gradeoptions = array();
 493             $items = grade_item::fetch_all(array('courseid'=>$COURSE->id));
 494             $items = $items ? $items : array();
 495             foreach($items as $id=>$item) {
 496                 // Do not include grades for current item
 497                 if (!empty($this->_cm) && $this->_cm->instance == $item->iteminstance
 498                     && $this->_cm->modname == $item->itemmodule
 499                     && $item->itemtype == 'mod') {
 500                     continue;
 501                 }
 502                 $gradeoptions[$id] = $item->get_name();
 503             }
 504             asort($gradeoptions);
 505             $gradeoptions = array(0=>get_string('none','condition'))+$gradeoptions;
 506
 507             $grouparray = array();
 508             $grouparray[] =& $mform->createElement('select','conditiongradeitemid','',$gradeoptions);
 509             $grouparray[] =& $mform->createElement('static', '', '',' '.get_string('grade_atleast','condition').' ');
 510             $grouparray[] =& $mform->createElement('text', 'conditiongrademin','',array('size'=>3));
 511             $grouparray[] =& $mform->createElement('static', '', '','% '.get_string('grade_upto','condition').' ');
 512             $grouparray[] =& $mform->createElement('text', 'conditiongrademax','',array('size'=>3));
 513             $grouparray[] =& $mform->createElement('static', '', '','%');
 514             $group = $mform->createElement('group','conditiongradegroup',
 515                 get_string('gradecondition', 'condition'),$grouparray);
 516
 517             // Get version with condition info and store it so we don't ask
 518             // twice
 519             if(!empty($this->_cm)) {
 520                 $ci = new condition_info($this->_cm, CONDITION_MISSING_EXTRATABLE);
 521                 $this->_cm = $ci->get_full_course_module();
 522                 $count = count($this->_cm->conditionsgrade)+1;
 523             } else {
 524                 $count = 1;
 525             }
 526
 527             $this->repeat_elements(array($group), $count, array(), 'conditiongraderepeats', 'conditiongradeadds', 2,
 528                                    get_string('addgrades', 'condition'), true);
 529             $mform->addHelpButton('conditiongradegroup[0]', 'gradecondition', 'condition');
 530
 531             // Conditions based on completion
 532             $completion = new completion_info($COURSE);
 533             if ($completion->is_enabled()) {
 534                 $completionoptions = array();
 535                 $modinfo = get_fast_modinfo($COURSE);
 536                 foreach($modinfo->cms as $id=>$cm) {
 537                     // Add each course-module if it:
 538                     // (a) has completion turned on
 539                     // (b) is not the same as current course-module
 540                     if ($cm->completion && (empty($this->_cm) || $this->_cm->id != $id)) {
 541                         $completionoptions[$id]=$cm->name;
 542                     }
 543                 }
 544                 asort($completionoptions);
 545                 $completionoptions = array(0=>get_string('none','condition'))+$completionoptions;
 546
 547                 $completionvalues=array(
 548                     COMPLETION_COMPLETE=>get_string('completion_complete','condition'),
 549                     COMPLETION_INCOMPLETE=>get_string('completion_incomplete','condition'),
 550                     COMPLETION_COMPLETE_PASS=>get_string('completion_pass','condition'),
 551                     COMPLETION_COMPLETE_FAIL=>get_string('completion_fail','condition'));
 552
 553                 $grouparray = array();
 554                 $grouparray[] =& $mform->createElement('select','conditionsourcecmid','',$completionoptions);
 555                 $grouparray[] =& $mform->createElement('select','conditionrequiredcompletion','',$completionvalues);
 556                 $group = $mform->createElement('group','conditioncompletiongroup',
 557                     get_string('completioncondition', 'condition'),$grouparray);
 558
 559                 $count = empty($this->_cm) ? 1 : count($this->_cm->conditionscompletion)+1;
 560                 $this->repeat_elements(array($group),$count,array(),
 561                     'conditioncompletionrepeats','conditioncompletionadds',2,
 562                     get_string('addcompletions','condition'),true);
 563                 $mform->addHelpButton('conditioncompletiongroup[0]', 'completioncondition', 'condition');
 564             }
 565
 566             // Do we display availability info to students?
 567             $mform->addElement('select', 'showavailability', get_string('showavailability', 'condition'),
 568                     array(CONDITION_STUDENTVIEW_SHOW=>get_string('showavailability_show', 'condition'),
 569                     CONDITION_STUDENTVIEW_HIDE=>get_string('showavailability_hide', 'condition')));
 570             $mform->setDefault('showavailability', CONDITION_STUDENTVIEW_SHOW);
 571         }
 572
 573         // Conditional activities: completion tracking section
 574         if(!isset($completion)) {
 575             $completion = new completion_info($COURSE);
 576         }
 577         if ($completion->is_enabled()) {
 578             $mform->addElement('header', 'activitycompletionheader', get_string('activitycompletion', 'completion'));
 579
 580             // Unlock button for if people have completed it (will
 581             // be removed in definition_after_data if they haven't)
 582             $mform->addElement('submit', 'unlockcompletion', get_string('unlockcompletion', 'completion'));
 583             $mform->registerNoSubmitButton('unlockcompletion');
 584             $mform->addElement('hidden', 'completionunlocked', 0);
 585             $mform->setType('completionunlocked', PARAM_INT);
 586
 587             $mform->addElement('select', 'completion', get_string('completion', 'completion'),
 588                 array(COMPLETION_TRACKING_NONE=>get_string('completion_none', 'completion'),
 589                 COMPLETION_TRACKING_MANUAL=>get_string('completion_manual', 'completion')));
 590             $mform->setDefault('completion', $this->_features->defaultcompletion
 591                 ? COMPLETION_TRACKING_MANUAL
 592                 : COMPLETION_TRACKING_NONE);
 593             $mform->addHelpButton('completion', 'completion', 'completion');
 594
 595             // Automatic completion once you view it
 596             $gotcompletionoptions = false;
 597             if (plugin_supports('mod', $this->_modname, FEATURE_COMPLETION_TRACKS_VIEWS, false)) {
 598                 $mform->addElement('checkbox', 'completionview', get_string('completionview', 'completion'),
 599                     get_string('completionview_desc', 'completion'));
 600                 $mform->disabledIf('completionview', 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 601                 $gotcompletionoptions = true;
 602             }
 603
 604             // Automatic completion once it's graded
 605             if (plugin_supports('mod', $this->_modname, FEATURE_GRADE_HAS_GRADE, false)) {
 606                 $mform->addElement('checkbox', 'completionusegrade', get_string('completionusegrade', 'completion'),
 607                     get_string('completionusegrade_desc', 'completion'));
 608                 $mform->disabledIf('completionusegrade', 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 609                 $mform->addHelpButton('completionusegrade', 'completionusegrade', 'completion');
 610                 $gotcompletionoptions = true;
 611             }
 612
 613             // Automatic completion according to module-specific rules
 614             $this->_customcompletionelements = $this->add_completion_rules();
 615             foreach ($this->_customcompletionelements as $element) {
 616                 $mform->disabledIf($element, 'completion', 'ne', COMPLETION_TRACKING_AUTOMATIC);
 617             }
 618
 619             $gotcompletionoptions = $gotcompletionoptions ||
 620                 count($this->_customcompletionelements)>0;
 621
 622             // Automatic option only appears if possible
 623             if ($gotcompletionoptions) {
 624                 $mform->getElement('completion')->addOption(
 625                     get_string('completion_automatic', 'completion'),
 626                     COMPLETION_TRACKING_AUTOMATIC);
 627             }
 628
 629             // Completion expected at particular date? (For progress tracking)
 630             $mform->addElement('date_selector', 'completionexpected', get_string('completionexpected', 'completion'), array('optional'=>true));
 631             $mform->addHelpButton('completionexpected', 'completionexpected', 'completion');
 632             $mform->disabledIf('completionexpected', 'completion', 'eq', COMPLETION_TRACKING_NONE);
 633         }
 634
 635         $this->standard_hidden_coursemodule_elements();
 636     }
 637
 638     /**
 639      * Can be overridden to add custom completion rules if the module wishes
 640      * them. If overriding this, you should also override completion_rule_enabled.
 641      * <p>
 642      * Just add elements to the form as needed and return the list of IDs. The
 643      * system will call disabledIf and handle other behaviour for each returned
 644      * ID.
 645      * @return array Array of string IDs of added items, empty array if none
 646      */
 647     function add_completion_rules() {
 648         return array();
 649     }
 650
 651     /**
 652      * Called during validation. Override to indicate, based on the data, whether
 653      * a custom completion rule is enabled (selected).
 654      *
 655      * @param array $data Input data (not yet validated)
 656      * @return bool True if one or more rules is enabled, false if none are;
 657      *   default returns false
 658      */
 659     function completion_rule_enabled($data) {
 660         return false;
 661     }
 662
 663     function standard_hidden_coursemodule_elements(){
 664         $mform =& $this->_form;
 665         $mform->addElement('hidden', 'course', 0);
 666         $mform->setType('course', PARAM_INT);
 667
 668         $mform->addElement('hidden', 'coursemodule', 0);
 669         $mform->setType('coursemodule', PARAM_INT);
 670
 671         $mform->addElement('hidden', 'section', 0);
 672         $mform->setType('section', PARAM_INT);
 673
 674         $mform->addElement('hidden', 'module', 0);
 675         $mform->setType('module', PARAM_INT);
 676
 677         $mform->addElement('hidden', 'modulename', '');
 678         $mform->setType('modulename', PARAM_PLUGIN);
 679
 680         $mform->addElement('hidden', 'instance', 0);
 681         $mform->setType('instance', PARAM_INT);
 682
 683         $mform->addElement('hidden', 'add', 0);
 684         $mform->setType('add', PARAM_ALPHA);
 685
 686         $mform->addElement('hidden', 'update', 0);
 687         $mform->setType('update', PARAM_INT);
 688
 689         $mform->addElement('hidden', 'return', 0);
 690         $mform->setType('return', PARAM_BOOL);
 691     }
 692
 693     public function standard_grading_coursemodule_elements() {
 694         global $COURSE, $CFG;
 695         $mform =& $this->_form;
 696
 697         if ($this->_features->hasgrades) {
 698
 699             if (!$this->_features->rating || $this->_features->gradecat) {
 700                 $mform->addElement('header', 'modstandardgrade', get_string('grade'));
 701             }
 702
 703             //if supports grades and grades arent being handled via ratings
 704             if (!$this->_features->rating) {
 705                 $mform->addElement('modgrade', 'grade', get_string('grade'));
 706                 $mform->setDefault('grade', 100);
 707             }
 708
 709             if ($this->_features->advancedgrading
 710                     and !empty($this->current->_advancedgradingdata['methods'])
 711                     and !empty($this->current->_advancedgradingdata['areas'])) {
 712
 713                 if (count($this->current->_advancedgradingdata['areas']) == 1) {
 714                     // if there is just one gradable area (most cases), display just the selector
 715                     // without its name to make UI simplier
 716                     $areadata = reset($this->current->_advancedgradingdata['areas']);
 717                     $areaname = key($this->current->_advancedgradingdata['areas']);
 718                     $mform->addElement('select', 'advancedgradingmethod_'.$areaname,
 719                         get_string('gradingmethod', 'core_grading'), $this->current->_advancedgradingdata['methods']);
 720                     $mform->addHelpButton('advancedgradingmethod_'.$areaname, 'gradingmethod', 'core_grading');
 721
 722                 } else {
 723                     // the module defines multiple gradable areas, display a selector
 724                     // for each of them together with a name of the area
 725                     $areasgroup = array();
 726                     foreach ($this->current->_advancedgradingdata['areas'] as $areaname => $areadata) {
 727                         $areasgroup[] = $mform->createElement('select', 'advancedgradingmethod_'.$areaname,
 728                             $areadata['title'], $this->current->_advancedgradingdata['methods']);
 729                         $areasgroup[] = $mform->createElement('static', 'advancedgradingareaname_'.$areaname, '', $areadata['title']);
 730                     }
 731                     $mform->addGroup($areasgroup, 'advancedgradingmethodsgroup', get_string('gradingmethods', 'core_grading'),
 732                         array(' ', '<br />'), false);
 733                 }
 734             }
 735
 736             if ($this->_features->gradecat) {
 737                 $mform->addElement('select', 'gradecat',
 738                         get_string('gradecategoryonmodform', 'grades'),
 739                         grade_get_categories_menu($COURSE->id, $this->_outcomesused));
 740                 $mform->addHelpButton('gradecat', 'gradecategoryonmodform', 'grades');
 741             }
 742         }
 743     }
 744
 745     function add_intro_editor($required=false, $customlabel=null) {
 746         if (!$this->_features->introeditor) {
 747             // intro editor not supported in this module
 748             return;
 749         }
 750
 751         $mform = $this->_form;
 752         $label = is_null($customlabel) ? get_string('moduleintro') : $customlabel;
 753
 754         $mform->addElement('editor', 'introeditor', $label, null, array('maxfiles'=>EDITOR_UNLIMITED_FILES, 'noclean'=>true, 'context'=>$this->context));
 755         $mform->setType('introeditor', PARAM_RAW); // no XSS prevention here, users must be trusted
 756         if ($required) {
 757             $mform->addRule('introeditor', get_string('required'), 'required', null, 'client');
 758         }
 759
 760         // If the 'show description' feature is enabled, this checkbox appears
 761         // below the intro.
 762         if ($this->_features->showdescription) {
 763             $mform->addElement('checkbox', 'showdescription', get_string('showdescription'));
 764             $mform->addHelpButton('showdescription', 'showdescription');
 765         }
 766     }
 767
 768     /**
 769      * Overriding formslib's add_action_buttons() method, to add an extra submit "save changes and return" button.
 770      *
 771      * @param bool $cancel show cancel button
 772      * @param string $submitlabel null means default, false means none, string is label text
 773      * @param string $submit2label  null means default, false means none, string is label text
 774      * @return void
 775      */
 776     function add_action_buttons($cancel=true, $submitlabel=null, $submit2label=null) {
 777         if (is_null($submitlabel)) {
 778             $submitlabel = get_string('savechangesanddisplay');
 779         }
 780
 781         if (is_null($submit2label)) {
 782             $submit2label = get_string('savechangesandreturntocourse');
 783         }
 784
 785         $mform = $this->_form;
 786
 787         // elements in a row need a group
 788         $buttonarray = array();
 789
 790         if ($submit2label !== false) {
 791             $buttonarray[] = &$mform->createElement('submit', 'submitbutton2', $submit2label);
 792         }
 793
 794         if ($submitlabel !== false) {
 795             $buttonarray[] = &$mform->createElement('submit', 'submitbutton', $submitlabel);
 796         }
 797
 798         if ($cancel) {
 799             $buttonarray[] = &$mform->createElement('cancel');
 800         }
 801
 802         $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 803         $mform->setType('buttonar', PARAM_RAW);
 804         $mform->closeHeaderBefore('buttonar');
 805     }
 806 }
 807
 808