moodle-mod-customcert/element/grade/classes/element.php

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<?php
// This file is part of the customcert module for 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/>.
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/**
* This file contains the customcert element grade's core interaction API.
*
* @package customcertelement_grade
* @copyright 2013 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace customcertelement_grade;
defined('MOODLE_INTERNAL') || die();
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/**
* Grade - Course
*/
define('CUSTOMCERT_GRADE_COURSE', '0');
/**
* The customcert element grade's core interaction API.
*
* @package customcertelement_grade
* @copyright 2013 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class element extends \mod_customcert\element {
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/**
* This function renders the form elements when adding a customcert element.
*
* @param \MoodleQuickForm $mform the edit_form instance
*/
public function render_form_elements($mform) {
global $COURSE;
// Get the grade items we can display.
$gradeitems = array();
$gradeitems[CUSTOMCERT_GRADE_COURSE] = get_string('coursegrade', 'customcertelement_grade');
$gradeitems = $gradeitems + \mod_customcert\element_helper::get_grade_items($COURSE);
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// The grade items.
$mform->addElement('select', 'gradeitem', get_string('gradeitem', 'customcertelement_grade'), $gradeitems);
$mform->addHelpButton('gradeitem', 'gradeitem', 'customcertelement_grade');
// The grade format.
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$mform->addElement('select', 'gradeformat', get_string('gradeformat', 'customcertelement_grade'),
self::get_grade_format_options());
$mform->setType('gradeformat', PARAM_INT);
$mform->addHelpButton('gradeformat', 'gradeformat', 'customcertelement_grade');
parent::render_form_elements($mform);
}
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/**
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* This will handle how form data will be saved into the data column in the
* customcert_elements table.
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*
* @param \stdClass $data the form data.
* @return string the json encoded array
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*/
public function save_unique_data($data) {
// Array of data we will be storing in the database.
$arrtostore = array(
'gradeitem' => $data->gradeitem,
'gradeformat' => $data->gradeformat
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);
// Encode these variables before saving into the DB.
return json_encode($arrtostore);
}
/**
* Handles rendering the element on the pdf.
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*
* @param \pdf $pdf the pdf object
* @param bool $preview true if it is a preview, false otherwise
* @param \stdClass $user the user we are rendering this for
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*/
public function render($pdf, $preview, $user) {
// If there is no element data, we have nothing to display.
if (empty($this->get_data())) {
return;
}
$courseid = \mod_customcert\element_helper::get_courseid($this->id);
// Decode the information stored in the database.
$gradeinfo = json_decode($this->get_data());
$gradeitem = $gradeinfo->gradeitem;
$gradeformat = $gradeinfo->gradeformat;
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// If we are previewing this certificate then just show a demonstration grade.
if ($preview) {
$courseitem = \grade_item::fetch_course_item($courseid);
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$grade = grade_format_gradevalue('100', $courseitem, true, $gradeinfo->gradeformat);;
} else {
if ($gradeitem == CUSTOMCERT_GRADE_COURSE) {
$grade = \mod_customcert\element_helper::get_course_grade_info(
$courseid,
$gradeformat,
$user->id
);
} else if (strpos($gradeitem, 'gradeitem:') === 0) {
$gradeitemid = substr($gradeitem, 10);
$grade = \mod_customcert\element_helper::get_grade_item_info(
$gradeitemid,
$gradeformat,
$user->id
);
} else {
$grade = \mod_customcert\element_helper::get_mod_grade_info(
$gradeitem,
$gradeformat,
$user->id
);
}
if ($grade) {
$grade = $grade->get_displaygrade();
}
}
\mod_customcert\element_helper::render_content($pdf, $this, $grade);
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}
/**
* Render the element in html.
*
* This function is used to render the element when we are using the
* drag and drop interface to position it.
*
* @return string the html
*/
public function render_html() {
global $COURSE;
// If there is no element data, we have nothing to display.
if (empty($this->get_data())) {
return;
}
// Decode the information stored in the database.
$gradeinfo = json_decode($this->get_data());
$courseitem = \grade_item::fetch_course_item($COURSE->id);
$grade = grade_format_gradevalue('100', $courseitem, true, $gradeinfo->gradeformat);
return \mod_customcert\element_helper::render_html_content($this, $grade);
}
/**
* Sets the data on the form when editing an element.
*
* @param \MoodleQuickForm $mform the edit_form instance
*/
public function definition_after_data($mform) {
// Set the item and format for this element.
if (!empty($this->get_data())) {
$gradeinfo = json_decode($this->get_data());
$element = $mform->getElement('gradeitem');
$element->setValue($gradeinfo->gradeitem);
$element = $mform->getElement('gradeformat');
$element->setValue($gradeinfo->gradeformat);
}
parent::definition_after_data($mform);
}
/**
* This function is responsible for handling the restoration process of the element.
*
* We will want to update the course module the grade element is pointing to as it will
* have changed in the course restore.
*
* @param \restore_customcert_activity_task $restore
*/
public function after_restore($restore) {
global $DB;
$gradeinfo = json_decode($this->get_data());
if ($newitem = \restore_dbops::get_backup_ids_record($restore->get_restoreid(), 'course_module', $gradeinfo->gradeitem)) {
$gradeinfo->gradeitem = $newitem->newitemid;
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$DB->set_field('customcert_elements', 'data', $this->save_unique_data($gradeinfo), array('id' => $this->get_id()));
}
}
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/**
* Helper function to return all the possible grade formats.
*
* @return array returns an array of grade formats
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*/
public static function get_grade_format_options() {
$gradeformat = array();
$gradeformat[GRADE_DISPLAY_TYPE_REAL] = get_string('gradepoints', 'customcertelement_grade');
$gradeformat[GRADE_DISPLAY_TYPE_PERCENTAGE] = get_string('gradepercent', 'customcertelement_grade');
$gradeformat[GRADE_DISPLAY_TYPE_LETTER] = get_string('gradeletter', 'customcertelement_grade');
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return $gradeformat;
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}
}