C:/xampp/htdocs/moodle/lib/completion/completion_criteria_role.php

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<?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/>.

class completion_criteria_role extends completion_criteria {

    public $criteriatype = COMPLETION_CRITERIA_TYPE_ROLE;

    public static function fetch($params) {
        $params['criteriatype'] = COMPLETION_CRITERIA_TYPE_ROLE;
        return self::fetch_helper('course_completion_criteria', __CLASS__, $params);
    }

    public function config_form_display(&$mform, $data = null) {

        $mform->addElement('checkbox', 'criteria_role['.$data->id.']', $data->name);

        if ($this->id) {
            $mform->setDefault('criteria_role['.$data->id.']', 1);
        }
    }

    public function update_config(&$data) {

        if (!empty($data->criteria_role) && is_array($data->criteria_role)) {

            $this->course = $data->id;

            foreach (array_keys($data->criteria_role) as $role) {

                $this->role = $role;
                $this->id = NULL;
                $this->insert();
            }
        }
    }

    public function complete($completion) {
        $this->review($completion, true, true);
    }

    public function review($completion, $mark = true, $is_complete = false)  {
        // If we are marking this as complete
        if ($is_complete && $mark)
        {
            $completion->completedself = 1;
            $completion->mark_complete();

            return true;
        }

        return $completion->is_complete();
    }

    public function get_title() {
        global $DB;
        $role = $DB->get_field('role', 'name', array('id' => $this->role));
        return $role;
    }

    public function get_title_detailed() {
        global $DB;
        return $DB->get_field('role', 'name', array('id' => $this->role));
    }

    public function get_type_title() {
        return get_string('approval', 'completion');
    }

    public function get_details($completion) {
        $details = array();
        $details['type'] = get_string('manualcompletionby', 'completion');
        $details['criteria'] = $this->get_title();
        $details['requirement'] = get_string('markedcompleteby', 'completion', $details['criteria']);
        $details['status'] = '';

        return $details;
    }
}