Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

if (!defined('MOODLE_INTERNAL')) {

    die('Direct access to this script is forbidden.');    //  It must be included from a Moodle page.

}

require_once($CFG->dirroot.'/course/moodleform_mod.php');

require_once($CFG->dirroot.'/mod/scorm/locallib.php');

class mod_scorm_mod_form extends moodleform_mod {

    public function definition() {

        global $CFG, $COURSE, $OUTPUT;

        $cfgscorm = get_config('scorm');

        $mform = $this->_form;

        if (!$CFG->slasharguments) {

            $mform->addElement('static', '', '', $OUTPUT->notification(get_string('slashargs', 'scorm'), 'notifyproblem'));

        }

        $mform->addElement('header', 'general', get_string('general', 'form'));

        // Name.

        $mform->addElement('text', 'name', get_string('name'));

        if (!empty($CFG->formatstringstriptags)) {

            $mform->setType('name', PARAM_TEXT);

        } else {

            $mform->setType('name', PARAM_CLEANHTML);

        }

        $mform->addRule('name', null, 'required', null, 'client');

        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');

        // Summary.

        $this->standard_intro_elements();

        // Package.

        $mform->addElement('header', 'packagehdr', get_string('packagehdr', 'scorm'));

        $mform->setExpanded('packagehdr', true);

        // Scorm types.

        $scormtypes = array(SCORM_TYPE_LOCAL => get_string('typelocal', 'scorm'));

        if ($cfgscorm->allowtypeexternal) {

            $scormtypes[SCORM_TYPE_EXTERNAL] = get_string('typeexternal', 'scorm');

        }

        if ($cfgscorm->allowtypelocalsync) {

            $scormtypes[SCORM_TYPE_LOCALSYNC] = get_string('typelocalsync', 'scorm');

        }

        if ($cfgscorm->allowtypeexternalaicc) {

            $scormtypes[SCORM_TYPE_AICCURL] = get_string('typeaiccurl', 'scorm');

        }

        // Reference.

        if (count($scormtypes) > 1) {

            $mform->addElement('select', 'scormtype', get_string('scormtype', 'scorm'), $scormtypes);

            $mform->setType('scormtype', PARAM_ALPHA);

            $mform->addHelpButton('scormtype', 'scormtype', 'scorm');

            $mform->addElement('text', 'packageurl', get_string('packageurl', 'scorm'), array('size' => 60));

            $mform->setType('packageurl', PARAM_RAW);

            $mform->addHelpButton('packageurl', 'packageurl', 'scorm');

            $mform->hideIf('packageurl', 'scormtype', 'eq', SCORM_TYPE_LOCAL);

        } else {

            $mform->addElement('hidden', 'scormtype', SCORM_TYPE_LOCAL);

            $mform->setType('scormtype', PARAM_ALPHA);

        }

        // New local package upload.

        $filemanageroptions = array();

        $filemanageroptions['accepted_types'] = array('.zip', '.xml');

        $filemanageroptions['maxbytes'] = 0;

        $filemanageroptions['maxfiles'] = 1;

        $filemanageroptions['subdirs'] = 0;

        $mform->addElement('filemanager', 'packagefile', get_string('package', 'scorm'), null, $filemanageroptions);

        $mform->addHelpButton('packagefile', 'package', 'scorm');

        $mform->hideIf('packagefile', 'scormtype', 'noteq', SCORM_TYPE_LOCAL);

        // Update packages timing.

        $mform->addElement('select', 'updatefreq', get_string('updatefreq', 'scorm'), scorm_get_updatefreq_array());

        $mform->setType('updatefreq', PARAM_INT);

        $mform->setDefault('updatefreq', $cfgscorm->updatefreq);

        $mform->addHelpButton('updatefreq', 'updatefreq', 'scorm');

        // Display Settings.

        $mform->addElement('header', 'displaysettings', get_string('appearance'));

        // Framed / Popup Window.

        $mform->addElement('select', 'popup', get_string('display', 'scorm'), scorm_get_popup_display_array());

        $mform->setDefault('popup', $cfgscorm->popup);

        $mform->setAdvanced('popup', $cfgscorm->popup_adv);

        // Width.

        $mform->addElement('text', 'width', get_string('width', 'scorm'), 'maxlength="5" size="5"');

        $mform->setDefault('width', $cfgscorm->framewidth);

        $mform->setType('width', PARAM_INT);

        $mform->setAdvanced('width', $cfgscorm->framewidth_adv);

        $mform->hideIf('width', 'popup', 'eq', 0);

        // Height.

        $mform->addElement('text', 'height', get_string('height', 'scorm'), 'maxlength="5" size="5"');

        $mform->setDefault('height', $cfgscorm->frameheight);

        $mform->setType('height', PARAM_INT);

        $mform->setAdvanced('height', $cfgscorm->frameheight_adv);

        $mform->hideIf('height', 'popup', 'eq', 0);

        // Window Options.

        $winoptgrp = array();

        foreach (scorm_get_popup_options_array() as $key => $value) {

            $winoptgrp[] = &$mform->createElement('checkbox', $key, '', get_string($key, 'scorm'));

            $mform->setDefault($key, $value);

        }

        $mform->addGroup($winoptgrp, 'winoptgrp', get_string('options', 'scorm'), '<br />', false);

        $mform->hideIf('winoptgrp', 'popup', 'eq', 0);

        $mform->setAdvanced('winoptgrp', $cfgscorm->winoptgrp_adv);

        // Skip view page.

        $skipviewoptions = scorm_get_skip_view_array();

        $mform->addElement('select', 'skipview', get_string('skipview', 'scorm'), $skipviewoptions);

        $mform->addHelpButton('skipview', 'skipview', 'scorm');

        $mform->setDefault('skipview', $cfgscorm->skipview);

        $mform->setAdvanced('skipview', $cfgscorm->skipview_adv);

        // Hide Browse.

        $mform->addElement('selectyesno', 'hidebrowse', get_string('hidebrowse', 'scorm'));

        $mform->addHelpButton('hidebrowse', 'hidebrowse', 'scorm');

        $mform->setDefault('hidebrowse', $cfgscorm->hidebrowse);

        $mform->setAdvanced('hidebrowse', $cfgscorm->hidebrowse_adv);

        // Display course structure.

        $mform->addElement('selectyesno', 'displaycoursestructure', get_string('displaycoursestructure', 'scorm'));

        $mform->addHelpButton('displaycoursestructure', 'displaycoursestructure', 'scorm');

        $mform->setDefault('displaycoursestructure', $cfgscorm->displaycoursestructure);

        $mform->setAdvanced('displaycoursestructure', $cfgscorm->displaycoursestructure_adv);

        // Toc display.

        $mform->addElement('select', 'hidetoc', get_string('hidetoc', 'scorm'), scorm_get_hidetoc_array());

        $mform->addHelpButton('hidetoc', 'hidetoc', 'scorm');

        $mform->setDefault('hidetoc', $cfgscorm->hidetoc);

        $mform->setAdvanced('hidetoc', $cfgscorm->hidetoc_adv);

        $mform->disabledIf('hidetoc', 'scormtype', 'eq', SCORM_TYPE_AICCURL);

        // Navigation panel display.

        $mform->addElement('select', 'nav', get_string('nav', 'scorm'), scorm_get_navigation_display_array());

        $mform->addHelpButton('nav', 'nav', 'scorm');

        $mform->setDefault('nav', $cfgscorm->nav);

        $mform->setAdvanced('nav', $cfgscorm->nav_adv);

        $mform->hideIf('nav', 'hidetoc', 'noteq', SCORM_TOC_SIDE);

        // Navigation panel position from left.

        $mform->addElement('text', 'navpositionleft', get_string('fromleft', 'scorm'), 'maxlength="5" size="5"');

        $mform->setDefault('navpositionleft', $cfgscorm->navpositionleft);

        $mform->setType('navpositionleft', PARAM_INT);

        $mform->setAdvanced('navpositionleft', $cfgscorm->navpositionleft_adv);

        $mform->hideIf('navpositionleft', 'hidetoc', 'noteq', SCORM_TOC_SIDE);

        $mform->hideIf('navpositionleft', 'nav', 'noteq', SCORM_NAV_FLOATING);

        // Navigation panel position from top.

        $mform->addElement('text', 'navpositiontop', get_string('fromtop', 'scorm'), 'maxlength="5" size="5"');

        $mform->setDefault('navpositiontop', $cfgscorm->navpositiontop);

        $mform->setType('navpositiontop', PARAM_INT);

        $mform->setAdvanced('navpositiontop', $cfgscorm->navpositiontop_adv);

        $mform->hideIf('navpositiontop', 'hidetoc', 'noteq', SCORM_TOC_SIDE);

        $mform->hideIf('navpositiontop', 'nav', 'noteq', SCORM_NAV_FLOATING);

        // Display attempt status.

        $mform->addElement('select', 'displayattemptstatus', get_string('displayattemptstatus', 'scorm'),

                           scorm_get_attemptstatus_array());

        $mform->addHelpButton('displayattemptstatus', 'displayattemptstatus', 'scorm');

        $mform->setDefault('displayattemptstatus', $cfgscorm->displayattemptstatus);

        $mform->setAdvanced('displayattemptstatus', $cfgscorm->displayattemptstatus_adv);

        // Availability.

        $mform->addElement('header', 'availability', get_string('availability'));

        $mform->addElement('date_time_selector', 'timeopen', get_string("scormopen", "scorm"), array('optional' => true));

        $mform->addElement('date_time_selector', 'timeclose', get_string("scormclose", "scorm"), array('optional' => true));

        // Grade Settings.

        $mform->addElement('header', 'gradesettings', get_string('gradenoun'));

        // Grade Method.

        $mform->addElement('select', 'grademethod', get_string('grademethod', 'scorm'), scorm_get_grade_method_array());

        $mform->addHelpButton('grademethod', 'grademethod', 'scorm');

        $mform->setDefault('grademethod', $cfgscorm->grademethod);

        // Maximum Grade.

        for ($i = 0; $i <= 100; $i++) {

            $grades[$i] = "$i";

        }

        $mform->addElement('select', 'maxgrade', get_string('maximumgrade'), $grades);

        $mform->setDefault('maxgrade', $cfgscorm->maxgrade);

        $mform->hideIf('maxgrade', 'grademethod', 'eq', GRADESCOES);

        // Attempts management.

        $mform->addElement('header', 'attemptsmanagementhdr', get_string('attemptsmanagement', 'scorm'));

        // Max Attempts.

        $mform->addElement('select', 'maxattempt', get_string('maximumattempts', 'scorm'), scorm_get_attempts_array());

        $mform->addHelpButton('maxattempt', 'maximumattempts', 'scorm');

        $mform->setDefault('maxattempt', $cfgscorm->maxattempt);

        // What Grade.

        $mform->addElement('select', 'whatgrade', get_string('whatgrade', 'scorm'),  scorm_get_what_grade_array());

        $mform->hideIf('whatgrade', 'maxattempt', 'eq', 1);

        $mform->addHelpButton('whatgrade', 'whatgrade', 'scorm');

        $mform->setDefault('whatgrade', $cfgscorm->whatgrade);

        // Force new attempt.

        $newattemptselect = scorm_get_forceattempt_array();

        $mform->addElement('select', 'forcenewattempt', get_string('forcenewattempts', 'scorm'), $newattemptselect);

        $mform->addHelpButton('forcenewattempt', 'forcenewattempts', 'scorm');

        $mform->setDefault('forcenewattempt', $cfgscorm->forcenewattempt);

        // Last attempt lock - lock the enter button after the last available attempt has been made.

        $mform->addElement('selectyesno', 'lastattemptlock', get_string('lastattemptlock', 'scorm'));

        $mform->addHelpButton('lastattemptlock', 'lastattemptlock', 'scorm');

        $mform->setDefault('lastattemptlock', $cfgscorm->lastattemptlock);

        // Compatibility settings.

        $mform->addElement('header', 'compatibilitysettingshdr', get_string('compatibilitysettings', 'scorm'));

        // Force completed.

        $mform->addElement('selectyesno', 'forcecompleted', get_string('forcecompleted', 'scorm'));

        $mform->addHelpButton('forcecompleted', 'forcecompleted', 'scorm');

        $mform->setDefault('forcecompleted', $cfgscorm->forcecompleted);

        // Autocontinue.

        $mform->addElement('selectyesno', 'auto', get_string('autocontinue', 'scorm'));

        $mform->addHelpButton('auto', 'autocontinue', 'scorm');

        $mform->setDefault('auto', $cfgscorm->auto);

        // Autocommit.

        $mform->addElement('selectyesno', 'autocommit', get_string('autocommit', 'scorm'));

        $mform->addHelpButton('autocommit', 'autocommit', 'scorm');

        $mform->setDefault('autocommit', $cfgscorm->autocommit);

        // Mastery score overrides status.

        $mform->addElement('selectyesno', 'masteryoverride', get_string('masteryoverride', 'scorm'));

        $mform->addHelpButton('masteryoverride', 'masteryoverride', 'scorm');

        $mform->setDefault('masteryoverride', $cfgscorm->masteryoverride);

        // Hidden Settings.

        $mform->addElement('hidden', 'datadir', null);

        $mform->setType('datadir', PARAM_RAW);

        $mform->addElement('hidden', 'pkgtype', null);

        $mform->setType('pkgtype', PARAM_RAW);

        $mform->addElement('hidden', 'launch', null);

        $mform->setType('launch', PARAM_RAW);

        $mform->addElement('hidden', 'redirect', null);

        $mform->setType('redirect', PARAM_RAW);

        $mform->addElement('hidden', 'redirecturl', null);

        $mform->setType('redirecturl', PARAM_RAW);

        $this->standard_coursemodule_elements();

        // A SCORM module should define this within itself and is not needed here.

        $suffix = $this->get_suffix();

        $completionpassgradeel = 'completionpassgrade' . $suffix;

        // The 'completionpassgrade' is a radio element with multiple options, so we should remove all of them.

        while ($mform->elementExists($completionpassgradeel)) {

            $mform->removeElement($completionpassgradeel);

        }

        // Buttons.

        $this->add_action_buttons();

    }

    public function data_preprocessing(&$defaultvalues) {

        global $CFG, $COURSE;

        if (isset($defaultvalues['popup']) && ($defaultvalues['popup'] == 1) && isset($defaultvalues['options'])) {

            if (!empty($defaultvalues['options'])) {

                $options = explode(',', $defaultvalues['options']);

                foreach ($options as $option) {

                    list($element, $value) = explode('=', $option);

                    $element = trim($element);

                    $defaultvalues[$element] = trim($value);

                }

            }

        }

        if (isset($defaultvalues['grademethod'])) {

            $defaultvalues['grademethod'] = intval($defaultvalues['grademethod']);

        }

        if (isset($defaultvalues['width']) && (strpos($defaultvalues['width'], '%') === false)

                                           && ($defaultvalues['width'] <= 100)) {

            $defaultvalues['width'] .= '%';

        }

        if (isset($defaultvalues['height']) && (strpos($defaultvalues['height'], '%') === false)

                                           && ($defaultvalues['height'] <= 100)) {

            $defaultvalues['height'] .= '%';

        }

        $scorms = get_all_instances_in_course('scorm', $COURSE);

        $coursescorm = current($scorms);

        $draftitemid = file_get_submitted_draft_itemid('packagefile');

        file_prepare_draft_area($draftitemid, $this->context->id, 'mod_scorm', 'package', 0,

            array('subdirs' => 0, 'maxfiles' => 1));

        $defaultvalues['packagefile'] = $draftitemid;

        if (($COURSE->format == 'singleactivity') && ((count($scorms) == 0) || ($defaultvalues['instance'] == $coursescorm->id))) {

            $defaultvalues['redirect'] = 'yes';

            $defaultvalues['redirecturl'] = $CFG->wwwroot.'/course/view.php?id='.$defaultvalues['course'];

        } else {

            $defaultvalues['redirect'] = 'no';

            $defaultvalues['redirecturl'] = $CFG->wwwroot.'/mod/scorm/view.php?id='.$defaultvalues['coursemodule'];

        }

        if (isset($defaultvalues['version'])) {

            $defaultvalues['pkgtype'] = (substr($defaultvalues['version'], 0, 5) == 'SCORM') ? 'scorm' : 'aicc';

        }

        if (isset($defaultvalues['instance'])) {

            $defaultvalues['datadir'] = $defaultvalues['instance'];

        }

        if (empty($defaultvalues['timeopen'])) {

            $defaultvalues['timeopen'] = 0;

        }

        if (empty($defaultvalues['timeclose'])) {

            $defaultvalues['timeclose'] = 0;

        }

        // Set some completion default data.

        $suffix = $this->get_suffix();

        $completionstatusrequiredel = 'completionstatusrequired' . $suffix;

        $cvalues = array();

        if (!empty($defaultvalues[$completionstatusrequiredel]) && !is_array($defaultvalues[$completionstatusrequiredel])) {

            // Unpack values.

            foreach (scorm_status_options() as $key => $value) {

                if (($defaultvalues[$completionstatusrequiredel] & $key) == $key) {

                    $cvalues[$key] = 1;

                }

            }

        } else if (empty($this->_instance) && !array_key_exists($completionstatusrequiredel, $defaultvalues)) {

            // When in add mode, set a default completion rule that requires the SCORM's status be set to "Completed".

            $cvalues[4] = 1;

        }

        if (!empty($cvalues)) {

            $defaultvalues[$completionstatusrequiredel] = $cvalues;

        }

        $completionscorerequiredel = 'completionscorerequired' . $suffix;

        if (isset($defaultvalues[$completionscorerequiredel])) {

            $completionscoreenabledel = 'completionscoreenabled' . $suffix;

            $defaultvalues[$completionscoreenabledel] = 1;

        }

    }

    public function validation($data, $files) {

        global $CFG, $USER;

        $errors = parent::validation($data, $files);

        $type = $data['scormtype'];

        if ($type === SCORM_TYPE_LOCAL) {

            if (empty($data['packagefile'])) {

                $errors['packagefile'] = get_string('required');

            } else {

                $draftitemid = file_get_submitted_draft_itemid('packagefile');

                file_prepare_draft_area($draftitemid, $this->context->id, 'mod_scorm', 'packagefilecheck', null,

                    array('subdirs' => 0, 'maxfiles' => 1));

                // Get file from users draft area.

                $usercontext = context_user::instance($USER->id);

                $fs = get_file_storage();

                $files = $fs->get_area_files($usercontext->id, 'user', 'draft', $draftitemid, 'id', false);

                if (count($files) < 1) {

                    $errors['packagefile'] = get_string('required');

                    return $errors;

                }

                $file = reset($files);

                if (!$file->is_external_file() && !empty($data['updatefreq'])) {

                    // Make sure updatefreq is not set if using normal local file.

                    $errors['updatefreq'] = get_string('updatefreq_error', 'mod_scorm');

                }

                if (strtolower($file->get_filename()) == 'imsmanifest.xml') {

                    if (!$file->is_external_file()) {

                        $errors['packagefile'] = get_string('aliasonly', 'mod_scorm');

                    } else {

                        $repository = repository::get_repository_by_id($file->get_repository_id(), context_system::instance());

                        if (!$repository->supports_relative_file()) {

                            $errors['packagefile'] = get_string('repositorynotsupported', 'mod_scorm');

                        }

                    }

                } else if (strtolower(substr($file->get_filename(), -3)) == 'xml') {

                    $errors['packagefile'] = get_string('invalidmanifestname', 'mod_scorm');

                } else {

                    // Validate this SCORM package.

                    $errors = array_merge($errors, scorm_validate_package($file));

                }

            }

        } else if ($type === SCORM_TYPE_EXTERNAL) {

            $reference = $data['packageurl'];

            // Syntax check.

            if (!preg_match('/(http:\/\/|https:\/\/|www).*\/imsmanifest.xml$/i', $reference)) {

                $errors['packageurl'] = get_string('invalidurl', 'scorm');

            } else {

                // Availability check.

                $result = scorm_check_url($reference);

                if (is_string($result)) {

                    $errors['packageurl'] = $result;

                }

            }

        } else if ($type === 'packageurl') {

            $reference = $data['reference'];

            // Syntax check.

            if (!preg_match('/(http:\/\/|https:\/\/|www).*(\.zip|\.pif)$/i', $reference)) {

                $errors['packageurl'] = get_string('invalidurl', 'scorm');

            } else {

                // Availability check.

                $result = scorm_check_url($reference);

                if (is_string($result)) {

                    $errors['packageurl'] = $result;

                }

            }

        } else if ($type === SCORM_TYPE_AICCURL) {

            $reference = $data['packageurl'];

            // Syntax check.

            if (!preg_match('/(http:\/\/|https:\/\/|www).*/', $reference)) {

                $errors['packageurl'] = get_string('invalidurl', 'scorm');

            } else {

                // Availability check.

                $result = scorm_check_url($reference);

                if (is_string($result)) {

                    $errors['packageurl'] = $result;

                }

            }

        }

        // Validate availability dates.

        if ($data['timeopen'] && $data['timeclose']) {

            if ($data['timeopen'] > $data['timeclose']) {

                $errors['timeclose'] = get_string('closebeforeopen', 'scorm');

            }

        }

        $suffix = $this->get_suffix();

        $completionstatusallscosel = 'completionstatusallscos' . $suffix;

        if (!empty($data[$completionstatusallscosel])) {

            $completionstatusrequiredel = 'completionstatusrequired' . $suffix;

            $requirestatus = false;

            foreach (scorm_status_options(true) as $key => $value) {

                if (!empty($data[$completionstatusrequiredel][$key])) {

                    $requirestatus = true;

                }

            }

            if (!$requirestatus) {

                $errors[$completionstatusallscosel] = get_string('youmustselectastatus', 'scorm');

            }

        }

        // Validate 'Require minimum score' value.

        $completionscorerequiredel = 'completionscorerequired' . $this->get_suffix();

        $completionscoreenabledel = 'completionscoreenabled' . $this->get_suffix();

        if (array_key_exists($completionscoreenabledel, $data) &&

                $data[$completionscoreenabledel] &&

                array_key_exists($completionscorerequiredel, $data) &&

                strlen($data[$completionscorerequiredel]) &&

                $data[$completionscorerequiredel] <= 0

        ) {

            $errors['completionscoregroup' . $this->get_suffix()] = get_string('minimumscoregreater', 'scorm');

        }

        return $errors;

    }

    // Need to translate the "options" and "reference" field.

    public function set_data($defaultvalues) {

        $defaultvalues = (array)$defaultvalues;

        if (isset($defaultvalues['scormtype']) and isset($defaultvalues['reference'])) {

            switch ($defaultvalues['scormtype']) {

                case SCORM_TYPE_LOCALSYNC :

                case SCORM_TYPE_EXTERNAL:

                case SCORM_TYPE_AICCURL:

                    $defaultvalues['packageurl'] = $defaultvalues['reference'];

            }

        }

        unset($defaultvalues['reference']);

        if (!empty($defaultvalues['options'])) {

            $options = explode(',', $defaultvalues['options']);

            foreach ($options as $option) {

                $opt = explode('=', $option);

                if (isset($opt[1])) {

                    $defaultvalues[$opt[0]] = $opt[1];

                }

            }

        }

        parent::set_data($defaultvalues);

    }

    public function add_completion_rules() {

        $suffix = $this->get_suffix();

        $mform =& $this->_form;

        $items = [];

        // Require score.

        $group = [];

        $completionscorerequiredel = 'completionscorerequired' . $suffix;

        $completionscoreenabledel = 'completionscoreenabled' . $suffix;

        $group[] =& $mform->createElement(

            'checkbox',

            $completionscoreenabledel,

            null,

            get_string('completionscorerequired', 'scorm')

        );

        $group[] =& $mform->createElement('text', $completionscorerequiredel, '', ['size' => 5]);

        $mform->setType($completionscorerequiredel, PARAM_INT);

        $completionscoregroupel = 'completionscoregroup' . $suffix;

        $mform->addGroup($group, $completionscoregroupel, '', '', false);

        $mform->hideIf($completionscorerequiredel, $completionscoreenabledel, 'notchecked');

        $mform->setDefault($completionscorerequiredel, 0);

        $items[] = $completionscoregroupel;

        // Require status.

        $completionstatusrequiredel = 'completionstatusrequired' . $suffix;

        foreach (scorm_status_options(true) as $key => $value) {

            $key = $completionstatusrequiredel . '['.$key.']';

            $mform->addElement('checkbox', $key, '', $value);

            $mform->setType($key, PARAM_BOOL);

            $mform->hideIf($key, $completionstatusrequiredel, 'notchecked');

            $items[] = $key;

        }

        $completionstatusallscosel = 'completionstatusallscos' . $suffix;

        $mform->addElement('checkbox', $completionstatusallscosel, get_string('completionstatusallscos', 'scorm'));

        $mform->setType($completionstatusallscosel, PARAM_BOOL);

        $mform->addHelpButton($completionstatusallscosel, 'completionstatusallscos', 'scorm');

        $mform->setDefault($completionstatusallscosel, 0);

        $items[] = $completionstatusallscosel;

        return $items;

    }

    public function completion_rule_enabled($data) {

        $suffix = $this->get_suffix();

        $status = !empty($data['completionstatusrequired' . $suffix]);

        $score = !empty($data['completionscoreenabled' . $suffix]) &&

                strlen($data['completionscorerequired' . $suffix] && $data['completionscorerequired' . $suffix] > 0);

        return $status || $score;

    }

    /**

     * Allows module to modify the data returned by form get_data().

     * This method is also called in the bulk activity completion form.

     *

     * Only available on moodleform_mod.

     *

     * @param stdClass $data the form data to be modified.

     */

    public function data_postprocessing($data) {

        parent::data_postprocessing($data);

        // Convert completionstatusrequired to a proper integer, if any.

        $total = 0;

        $suffix = $this->get_suffix();

        if (isset($data->{'completionstatusrequired' . $suffix}) && is_array($data->{'completionstatusrequired' . $suffix})) {

            foreach ($data->{'completionstatusrequired' . $suffix} as $state => $value) {

                if ($value) {

                    $total |= $state;

                }

            }

            if (!$total) {

                $total  = null;

            }

            $data->{'completionstatusrequired' . $suffix} = $total;

        }

        if (!empty($data->completionunlocked)) {

            // Turn off completion settings if the checkboxes aren't ticked.

            $completion = $data->{'completion' . $suffix};

            $autocompletion = isset($completion) && $completion == COMPLETION_TRACKING_AUTOMATIC;

            if (!(isset($data->{'completionstatusrequired' . $suffix}) && $autocompletion)) {

                $data->{'completionstatusrequired' . $suffix} = null;

            }

            // Else do nothing: completionstatusrequired has been already converted into a correct integer representation.

            if (!(isset($data->{'completionscoreenabled' . $suffix}) && $autocompletion)) {

                $data->{'completionscorerequired' . $suffix} = null;

            }

        }

    }

}