mod/lesson/mod_form.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Form to define a new instance of lesson or edit an instance.
  20  * It is used from /course/modedit.php.
  21  *
  22  * @package mod_lesson
  23  * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  24  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or late
  25  **/
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 require_once($CFG->dirroot.'/course/moodleform_mod.php');
  30 require_once($CFG->dirroot.'/mod/lesson/locallib.php');
  31
  32 class mod_lesson_mod_form extends moodleform_mod {
  33
  34     protected $course = null;
  35
  36     public function __construct($current, $section, $cm, $course) {
  37         $this->course = $course;
  38         parent::__construct($current, $section, $cm, $course);
  39     }
  40
  41     /**
  42      * Old syntax of class constructor. Deprecated in PHP7.
  43      *
  44      * @deprecated since Moodle 3.1
  45      */
  46     public function mod_lesson_mod_form($current, $section, $cm, $course) {
  47         debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
  48         self::__construct($current, $section, $cm, $course);
  49     }
  50
  51     function definition() {
  52         global $CFG, $COURSE, $DB, $OUTPUT;
  53
  54         $mform    = $this->_form;
  55
  56         $lessonconfig = get_config('mod_lesson');
  57
  58         $mform->addElement('header', 'general', get_string('general', 'form'));
  59
  60         /** Legacy slideshow width element to maintain backwards compatibility */
  61         $mform->addElement('hidden', 'width');
  62         $mform->setType('width', PARAM_INT);
  63         $mform->setDefault('width', $lessonconfig->slideshowwidth);
  64
  65         /** Legacy slideshow height element to maintain backwards compatibility */
  66         $mform->addElement('hidden', 'height');
  67         $mform->setType('height', PARAM_INT);
  68         $mform->setDefault('height', $lessonconfig->slideshowheight);
  69
  70         /** Legacy slideshow background color element to maintain backwards compatibility */
  71         $mform->addElement('hidden', 'bgcolor');
  72         $mform->setType('bgcolor', PARAM_TEXT);
  73         $mform->setDefault('bgcolor', $lessonconfig->slideshowbgcolor);
  74
  75         /** Legacy media popup width element to maintain backwards compatibility */
  76         $mform->addElement('hidden', 'mediawidth');
  77         $mform->setType('mediawidth', PARAM_INT);
  78         $mform->setDefault('mediawidth', $lessonconfig->mediawidth);
  79
  80         /** Legacy media popup height element to maintain backwards compatibility */
  81         $mform->addElement('hidden', 'mediaheight');
  82         $mform->setType('mediaheight', PARAM_INT);
  83         $mform->setDefault('mediaheight', $lessonconfig->mediaheight);
  84
  85         /** Legacy media popup close button element to maintain backwards compatibility */
  86         $mform->addElement('hidden', 'mediaclose');
  87         $mform->setType('mediaclose', PARAM_BOOL);
  88         $mform->setDefault('mediaclose', $lessonconfig->mediaclose);
  89
  90         $mform->addElement('text', 'name', get_string('name'), array('size'=>'64'));
  91         if (!empty($CFG->formatstringstriptags)) {
  92             $mform->setType('name', PARAM_TEXT);
  93         } else {
  94             $mform->setType('name', PARAM_CLEANHTML);
  95         }
  96         $mform->addRule('name', null, 'required', null, 'client');
  97         $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
  98         $this->standard_intro_elements();
  99
 100         // Appearance.
 101         $mform->addElement('header', 'appearancehdr', get_string('appearance'));
 102
 103         $filemanageroptions = array();
 104         $filemanageroptions['filetypes'] = '*';
 105         $filemanageroptions['maxbytes'] = $this->course->maxbytes;
 106         $filemanageroptions['subdirs'] = 0;
 107         $filemanageroptions['maxfiles'] = 1;
 108
 109         $mform->addElement('filemanager', 'mediafile', get_string('mediafile', 'lesson'), null, $filemanageroptions);
 110         $mform->addHelpButton('mediafile', 'mediafile', 'lesson');
 111         $mform->setAdvanced('mediafile', $lessonconfig->mediafile_adv);
 112
 113         $mform->addElement('selectyesno', 'progressbar', get_string('progressbar', 'lesson'));
 114         $mform->addHelpButton('progressbar', 'progressbar', 'lesson');
 115         $mform->setDefault('progressbar', $lessonconfig->progressbar);
 116         $mform->setAdvanced('progressbar', $lessonconfig->progressbar_adv);
 117
 118         $mform->addElement('selectyesno', 'ongoing', get_string('ongoing', 'lesson'));
 119         $mform->addHelpButton('ongoing', 'ongoing', 'lesson');
 120         $mform->setDefault('ongoing', $lessonconfig->ongoing);
 121         $mform->setAdvanced('ongoing', $lessonconfig->ongoing_adv);
 122
 123         $mform->addElement('selectyesno', 'displayleft', get_string('displayleftmenu', 'lesson'));
 124         $mform->addHelpButton('displayleft', 'displayleftmenu', 'lesson');
 125         $mform->setDefault('displayleft', $lessonconfig->displayleftmenu);
 126         $mform->setAdvanced('displayleft', $lessonconfig->displayleftmenu_adv);
 127
 128         $options = array();
 129         for($i = 100; $i >= 0; $i--) {
 130             $options[$i] = $i.'%';
 131         }
 132         $mform->addElement('select', 'displayleftif', get_string('displayleftif', 'lesson'), $options);
 133         $mform->addHelpButton('displayleftif', 'displayleftif', 'lesson');
 134         $mform->setDefault('displayleftif', $lessonconfig->displayleftif);
 135         $mform->setAdvanced('displayleftif', $lessonconfig->displayleftif_adv);
 136
 137         $mform->addElement('selectyesno', 'slideshow', get_string('slideshow', 'lesson'));
 138         $mform->addHelpButton('slideshow', 'slideshow', 'lesson');
 139         $mform->setDefault('slideshow', $lessonconfig->slideshow);
 140         $mform->setAdvanced('slideshow', $lessonconfig->slideshow_adv);
 141
 142         $numbers = array();
 143         for ($i = 20; $i > 1; $i--) {
 144             $numbers[$i] = $i;
 145         }
 146
 147         $mform->addElement('select', 'maxanswers', get_string('maximumnumberofanswersbranches', 'lesson'), $numbers);
 148         $mform->setDefault('maxanswers', $lessonconfig->maxanswers);
 149         $mform->setAdvanced('maxanswers', $lessonconfig->maxanswers_adv);
 150         $mform->setType('maxanswers', PARAM_INT);
 151         $mform->addHelpButton('maxanswers', 'maximumnumberofanswersbranches', 'lesson');
 152
 153         $mform->addElement('selectyesno', 'feedback', get_string('displaydefaultfeedback', 'lesson'));
 154         $mform->addHelpButton('feedback', 'displaydefaultfeedback', 'lesson');
 155         $mform->setDefault('feedback', $lessonconfig->defaultfeedback);
 156         $mform->setAdvanced('feedback', $lessonconfig->defaultfeedback_adv);
 157
 158         // Get the modules.
 159         if ($mods = get_course_mods($COURSE->id)) {
 160             $modinstances = array();
 161             foreach ($mods as $mod) {
 162                 // Get the module name and then store it in a new array.
 163                 if ($module = get_coursemodule_from_instance($mod->modname, $mod->instance, $COURSE->id)) {
 164                     // Exclude this lesson, if it's already been saved.
 165                     if (!isset($this->_cm->id) || $this->_cm->id != $mod->id) {
 166                         $modinstances[$mod->id] = $mod->modname.' - '.$module->name;
 167                     }
 168                 }
 169             }
 170             asort($modinstances); // Sort by module name.
 171             $modinstances=array(0=>get_string('none'))+$modinstances;
 172
 173             $mform->addElement('select', 'activitylink', get_string('activitylink', 'lesson'), $modinstances);
 174             $mform->addHelpButton('activitylink', 'activitylink', 'lesson');
 175             $mform->setDefault('activitylink', 0);
 176             $mform->setAdvanced('activitylink', $lessonconfig->activitylink_adv);
 177         }
 178
 179         // Availability.
 180         $mform->addElement('header', 'availabilityhdr', get_string('availability'));
 181
 182         $mform->addElement('date_time_selector', 'available', get_string('available', 'lesson'), array('optional'=>true));
 183         $mform->setDefault('available', 0);
 184
 185         $mform->addElement('date_time_selector', 'deadline', get_string('deadline', 'lesson'), array('optional'=>true));
 186         $mform->setDefault('deadline', 0);
 187
 188         // Time limit.
 189         $mform->addElement('duration', 'timelimit', get_string('timelimit', 'lesson'),
 190                 array('optional' => true));
 191         $mform->addHelpButton('timelimit', 'timelimit', 'lesson');
 192         $mform->setAdvanced('timelimit', $lessonconfig->timelimit_adv);
 193         $mform->setDefault('timelimit', $lessonconfig->timelimit);
 194
 195         $mform->addElement('selectyesno', 'usepassword', get_string('usepassword', 'lesson'));
 196         $mform->addHelpButton('usepassword', 'usepassword', 'lesson');
 197         $mform->setDefault('usepassword', $lessonconfig->password);
 198         $mform->setAdvanced('usepassword', $lessonconfig->password_adv);
 199
 200         $mform->addElement('passwordunmask', 'password', get_string('password', 'lesson'));
 201         $mform->setDefault('password', '');
 202         $mform->setAdvanced('password', $lessonconfig->password_adv);
 203         $mform->setType('password', PARAM_RAW);
 204         $mform->hideIf('password', 'usepassword', 'eq', 0);
 205         $mform->hideIf('passwordunmask', 'usepassword', 'eq', 0);
 206
 207         // Dependent on.
 208         if ($this->current && isset($this->current->dependency) && $this->current->dependency) {
 209             $mform->addElement('header', 'dependencyon', get_string('prerequisitelesson', 'lesson'));
 210             $mform->addElement('static', 'warningobsolete',
 211                 get_string('warning', 'lesson'),
 212                 get_string('prerequisiteisobsolete', 'lesson'));
 213             $options = array(0 => get_string('none'));
 214             if ($lessons = get_all_instances_in_course('lesson', $COURSE)) {
 215                 foreach ($lessons as $lesson) {
 216                     if ($lesson->id != $this->_instance) {
 217                         $options[$lesson->id] = format_string($lesson->name, true);
 218                     }
 219
 220                 }
 221             }
 222             $mform->addElement('select', 'dependency', get_string('dependencyon', 'lesson'), $options);
 223             $mform->addHelpButton('dependency', 'dependencyon', 'lesson');
 224             $mform->setDefault('dependency', 0);
 225
 226             $mform->addElement('text', 'timespent', get_string('timespentminutes', 'lesson'));
 227             $mform->setDefault('timespent', 0);
 228             $mform->setType('timespent', PARAM_INT);
 229             $mform->disabledIf('timespent', 'dependency', 'eq', 0);
 230
 231             $mform->addElement('checkbox', 'completed', get_string('completed', 'lesson'));
 232             $mform->setDefault('completed', 0);
 233             $mform->disabledIf('completed', 'dependency', 'eq', 0);
 234
 235             $mform->addElement('text', 'gradebetterthan', get_string('gradebetterthan', 'lesson'));
 236             $mform->setDefault('gradebetterthan', 0);
 237             $mform->setType('gradebetterthan', PARAM_INT);
 238             $mform->disabledIf('gradebetterthan', 'dependency', 'eq', 0);
 239         } else {
 240             $mform->addElement('hidden', 'dependency', 0);
 241             $mform->setType('dependency', PARAM_INT);
 242             $mform->addElement('hidden', 'timespent', 0);
 243             $mform->setType('timespent', PARAM_INT);
 244             $mform->addElement('hidden', 'completed', 0);
 245             $mform->setType('completed', PARAM_INT);
 246             $mform->addElement('hidden', 'gradebetterthan', 0);
 247             $mform->setType('gradebetterthan', PARAM_INT);
 248             $mform->setConstants(array('dependency' => 0, 'timespent' => 0,
 249                     'completed' => 0, 'gradebetterthan' => 0));
 250         }
 251
 252         // Allow to enable offline lessons only if the Mobile services are enabled.
 253         if ($CFG->enablemobilewebservice) {
 254             $mform->addElement('selectyesno', 'allowofflineattempts', get_string('allowofflineattempts', 'lesson'));
 255             $mform->addHelpButton('allowofflineattempts', 'allowofflineattempts', 'lesson');
 256             $mform->setDefault('allowofflineattempts', 0);
 257             $mform->setAdvanced('allowofflineattempts');
 258             $mform->disabledIf('allowofflineattempts', 'timelimit[number]', 'neq', 0);
 259
 260             $mform->addElement('static', 'allowofflineattemptswarning', '',
 261                     $OUTPUT->notification(get_string('allowofflineattempts_help', 'lesson'), 'warning'));
 262             $mform->setAdvanced('allowofflineattemptswarning');
 263         } else {
 264             $mform->addElement('hidden', 'allowofflineattempts', 0);
 265             $mform->setType('allowofflineattempts', PARAM_INT);
 266         }
 267
 268         // Flow control.
 269         $mform->addElement('header', 'flowcontrol', get_string('flowcontrol', 'lesson'));
 270
 271         $mform->addElement('selectyesno', 'modattempts', get_string('modattempts', 'lesson'));
 272         $mform->addHelpButton('modattempts', 'modattempts', 'lesson');
 273         $mform->setDefault('modattempts', $lessonconfig->modattempts);
 274         $mform->setAdvanced('modattempts', $lessonconfig->modattempts_adv);
 275
 276         $mform->addElement('selectyesno', 'review', get_string('displayreview', 'lesson'));
 277         $mform->addHelpButton('review', 'displayreview', 'lesson');
 278         $mform->setDefault('review', $lessonconfig->displayreview);
 279         $mform->setAdvanced('review', $lessonconfig->displayreview_adv);
 280
 281         $numbers = array();
 282         for ($i = 10; $i > 0; $i--) {
 283             $numbers[$i] = $i;
 284         }
 285         $mform->addElement('select', 'maxattempts', get_string('maximumnumberofattempts', 'lesson'), $numbers);
 286         $mform->addHelpButton('maxattempts', 'maximumnumberofattempts', 'lesson');
 287         $mform->setDefault('maxattempts', $lessonconfig->maximumnumberofattempts);
 288         $mform->setAdvanced('maxattempts', $lessonconfig->maximumnumberofattempts_adv);
 289
 290         $defaultnextpages = array();
 291         $defaultnextpages[0] = get_string('normal', 'lesson');
 292         $defaultnextpages[LESSON_UNSEENPAGE] = get_string('showanunseenpage', 'lesson');
 293         $defaultnextpages[LESSON_UNANSWEREDPAGE] = get_string('showanunansweredpage', 'lesson');
 294         $mform->addElement('select', 'nextpagedefault', get_string('actionaftercorrectanswer', 'lesson'), $defaultnextpages);
 295         $mform->addHelpButton('nextpagedefault', 'actionaftercorrectanswer', 'lesson');
 296         $mform->setDefault('nextpagedefault', $lessonconfig->defaultnextpage);
 297         $mform->setAdvanced('nextpagedefault', $lessonconfig->defaultnextpage_adv);
 298
 299         $numbers = array();
 300         for ($i = 100; $i >= 0; $i--) {
 301             $numbers[$i] = $i;
 302         }
 303         $mform->addElement('select', 'maxpages', get_string('numberofpagestoshow', 'lesson'), $numbers);
 304         $mform->addHelpButton('maxpages', 'numberofpagestoshow', 'lesson');
 305         $mform->setDefault('maxpages', $lessonconfig->numberofpagestoshow);
 306         $mform->setAdvanced('maxpages', $lessonconfig->numberofpagestoshow_adv);
 307
 308         // Grade.
 309         $this->standard_grading_coursemodule_elements();
 310
 311         // No header here, so that the following settings are displayed in the grade section.
 312
 313         $mform->addElement('selectyesno', 'practice', get_string('practice', 'lesson'));
 314         $mform->addHelpButton('practice', 'practice', 'lesson');
 315         $mform->setDefault('practice', $lessonconfig->practice);
 316         $mform->setAdvanced('practice', $lessonconfig->practice_adv);
 317
 318         $mform->addElement('selectyesno', 'custom', get_string('customscoring', 'lesson'));
 319         $mform->addHelpButton('custom', 'customscoring', 'lesson');
 320         $mform->setDefault('custom', $lessonconfig->customscoring);
 321         $mform->setAdvanced('custom', $lessonconfig->customscoring_adv);
 322
 323         $mform->addElement('selectyesno', 'retake', get_string('retakesallowed', 'lesson'));
 324         $mform->addHelpButton('retake', 'retakesallowed', 'lesson');
 325         $mform->setDefault('retake', $lessonconfig->retakesallowed);
 326         $mform->setAdvanced('retake', $lessonconfig->retakesallowed_adv);
 327
 328         $options = array();
 329         $options[0] = get_string('usemean', 'lesson');
 330         $options[1] = get_string('usemaximum', 'lesson');
 331         $mform->addElement('select', 'usemaxgrade', get_string('handlingofretakes', 'lesson'), $options);
 332         $mform->addHelpButton('usemaxgrade', 'handlingofretakes', 'lesson');
 333         $mform->setDefault('usemaxgrade', $lessonconfig->handlingofretakes);
 334         $mform->setAdvanced('usemaxgrade', $lessonconfig->handlingofretakes_adv);
 335         $mform->hideIf('usemaxgrade', 'retake', 'eq', '0');
 336
 337         $numbers = array();
 338         for ($i = 100; $i >= 0; $i--) {
 339             $numbers[$i] = $i;
 340         }
 341         $mform->addElement('select', 'minquestions', get_string('minimumnumberofquestions', 'lesson'), $numbers);
 342         $mform->addHelpButton('minquestions', 'minimumnumberofquestions', 'lesson');
 343         $mform->setDefault('minquestions', $lessonconfig->minimumnumberofquestions);
 344         $mform->setAdvanced('minquestions', $lessonconfig->minimumnumberofquestions_adv);
 345
 346 //-------------------------------------------------------------------------------
 347         $this->standard_coursemodule_elements();
 348 //-------------------------------------------------------------------------------
 349 // buttons
 350         $this->add_action_buttons();
 351     }
 352
 353     /**
 354      * Enforce defaults here
 355      *
 356      * @param array $defaultvalues Form defaults
 357      * @return void
 358      **/
 359     public function data_preprocessing(&$defaultvalues) {
 360         if (isset($defaultvalues['conditions'])) {
 361             $conditions = unserialize($defaultvalues['conditions']);
 362             $defaultvalues['timespent'] = $conditions->timespent;
 363             $defaultvalues['completed'] = $conditions->completed;
 364             $defaultvalues['gradebetterthan'] = $conditions->gradebetterthan;
 365         }
 366
 367         // Set up the completion checkbox which is not part of standard data.
 368         $defaultvalues['completiontimespentenabled'] =
 369             !empty($defaultvalues['completiontimespent']) ? 1 : 0;
 370
 371         if ($this->current->instance) {
 372             // Editing existing instance - copy existing files into draft area.
 373             $draftitemid = file_get_submitted_draft_itemid('mediafile');
 374             file_prepare_draft_area($draftitemid, $this->context->id, 'mod_lesson', 'mediafile', 0, array('subdirs'=>0, 'maxbytes' => $this->course->maxbytes, 'maxfiles' => 1));
 375             $defaultvalues['mediafile'] = $draftitemid;
 376         }
 377     }
 378
 379     /**
 380      * Enforce validation rules here
 381      *
 382      * @param object $data Post data to validate
 383      * @return array
 384      **/
 385     function validation($data, $files) {
 386         $errors = parent::validation($data, $files);
 387
 388         // Check open and close times are consistent.
 389         if ($data['available'] != 0 && $data['deadline'] != 0 &&
 390                 $data['deadline'] < $data['available']) {
 391             $errors['deadline'] = get_string('closebeforeopen', 'lesson');
 392         }
 393
 394         if (!empty($data['usepassword']) && empty($data['password'])) {
 395             $errors['password'] = get_string('emptypassword', 'lesson');
 396         }
 397
 398         return $errors;
 399     }
 400
 401     /**
 402      * Display module-specific activity completion rules.
 403      * Part of the API defined by moodleform_mod
 404      * @return array Array of string IDs of added items, empty array if none
 405      */
 406     public function add_completion_rules() {
 407         $mform = $this->_form;
 408
 409         $mform->addElement('checkbox', 'completionendreached', get_string('completionendreached', 'lesson'),
 410                 get_string('completionendreached_desc', 'lesson'));
 411         // Enable this completion rule by default.
 412         $mform->setDefault('completionendreached', 1);
 413
 414         $group = array();
 415         $group[] =& $mform->createElement('checkbox', 'completiontimespentenabled', '',
 416                 get_string('completiontimespent', 'lesson'));
 417         $group[] =& $mform->createElement('duration', 'completiontimespent', '', array('optional' => false));
 418         $mform->addGroup($group, 'completiontimespentgroup', get_string('completiontimespentgroup', 'lesson'), array(' '), false);
 419         $mform->disabledIf('completiontimespent[number]', 'completiontimespentenabled', 'notchecked');
 420         $mform->disabledIf('completiontimespent[timeunit]', 'completiontimespentenabled', 'notchecked');
 421
 422         return array('completionendreached', 'completiontimespentgroup');
 423     }
 424
 425     /**
 426      * Called during validation. Indicates whether a module-specific completion rule is selected.
 427      *
 428      * @param array $data Input data (not yet validated)
 429      * @return bool True if one or more rules is enabled, false if none are.
 430      */
 431     public function completion_rule_enabled($data) {
 432         return !empty($data['completionendreached']) || $data['completiontimespent'] > 0;
 433     }
 434
 435     /**
 436      * Allows module to modify the data returned by form get_data().
 437      * This method is also called in the bulk activity completion form.
 438      *
 439      * Only available on moodleform_mod.
 440      *
 441      * @param stdClass $data the form data to be modified.
 442      */
 443     public function data_postprocessing($data) {
 444         parent::data_postprocessing($data);
 445         // Turn off completion setting if the checkbox is not ticked.
 446         if (!empty($data->completionunlocked)) {
 447             $autocompletion = !empty($data->completion) && $data->completion == COMPLETION_TRACKING_AUTOMATIC;
 448             if (empty($data->completiontimespentenabled) || !$autocompletion) {
 449                 $data->completiontimespent = 0;
 450             }
 451             if (empty($data->completionendreached) || !$autocompletion) {
 452                 $data->completionendreached = 0;
 453             }
 454         }
 455     }
 456 }
 457