628 lines
24 KiB
PHP
628 lines
24 KiB
PHP
<?php
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// This file is part of the customcert module for Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Provides useful functions related to elements.
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*
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* @package mod_customcert
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* @copyright 2016 Mark Nelson <markn@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace mod_customcert;
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir . '/grade/constants.php');
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require_once($CFG->dirroot . '/grade/lib.php');
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require_once($CFG->dirroot . '/grade/querylib.php');
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/**
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* Class helper.
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*
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* Provides useful functions related to elements.
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*
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* @package mod_customcert
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* @copyright 2016 Mark Nelson <markn@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class element_helper {
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/**
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* @var int the top-left of element
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*/
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const CUSTOMCERT_REF_POINT_TOPLEFT = 0;
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/**
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* @var int the top-center of element
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*/
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const CUSTOMCERT_REF_POINT_TOPCENTER = 1;
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/**
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* @var int the top-left of element
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*/
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const CUSTOMCERT_REF_POINT_TOPRIGHT = 2;
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/**
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* Common behaviour for rendering specified content on the pdf.
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*
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* @param \pdf $pdf the pdf object
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* @param \mod_customcert\element $element the customcert element
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* @param string $content the content to render
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*/
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public static function render_content($pdf, $element, $content) {
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list($font, $attr) = self::get_font($element);
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$pdf->setFont($font, $attr, $element->get_fontsize());
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$fontcolour = \TCPDF_COLORS::convertHTMLColorToDec($element->get_colour(), $fontcolour);
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$pdf->SetTextColor($fontcolour['R'], $fontcolour['G'], $fontcolour['B']);
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$x = $element->get_posx();
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$y = $element->get_posy();
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$w = $element->get_width();
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$refpoint = $element->get_refpoint();
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$actualwidth = $pdf->GetStringWidth($content);
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$alignment = $element->get_alignment();
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if ($w and $w < $actualwidth) {
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$actualwidth = $w;
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}
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switch ($refpoint) {
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case self::CUSTOMCERT_REF_POINT_TOPRIGHT:
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$x = $element->get_posx() - $actualwidth;
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if ($x < 0) {
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$x = 0;
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$w = $element->get_posx();
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} else {
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$w = $actualwidth;
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}
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break;
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case self::CUSTOMCERT_REF_POINT_TOPCENTER:
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$x = $element->get_posx() - $actualwidth / 2;
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if ($x < 0) {
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$x = 0;
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$w = $element->get_posx() * 2;
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} else {
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$w = $actualwidth;
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}
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break;
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}
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if ($w) {
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$w += 0.0001;
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}
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$pdf->setCellPaddings(0, 0, 0, 0);
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$pdf->writeHTMLCell($w, 0, $x, $y, $content, 0, 0, false, true, $alignment);
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}
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/**
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* Common behaviour for rendering specified content on the drag and drop page.
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*
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* @param \mod_customcert\element $element the customcert element
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* @param string $content the content to render
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* @return string the html
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*/
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public static function render_html_content($element, $content) {
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list($font, $attr) = self::get_font($element);
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$fontstyle = 'font-family: ' . $font;
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if (strpos($attr, 'B') !== false) {
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$fontstyle .= '; font-weight: bold';
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}
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if (strpos($attr, 'I') !== false) {
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$fontstyle .= '; font-style: italic';
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}
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$style = $fontstyle . '; color: ' . $element->get_colour() . '; font-size: ' . $element->get_fontsize() . 'pt;';
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if ($element->get_width()) {
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$style .= ' width: ' . $element->get_width() . 'mm';
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}
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return \html_writer::div($content, '', array('style' => $style));
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}
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/**
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* Helper function to render the font elements.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_font($mform) {
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$mform->addElement('select', 'font', get_string('font', 'customcert'), \mod_customcert\certificate::get_fonts());
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$mform->setType('font', PARAM_TEXT);
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$mform->setDefault('font', 'times');
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$mform->addHelpButton('font', 'font', 'customcert');
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$mform->addElement('select', 'fontsize', get_string('fontsize', 'customcert'),
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\mod_customcert\certificate::get_font_sizes());
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$mform->setType('fontsize', PARAM_INT);
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$mform->setDefault('fontsize', 12);
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$mform->addHelpButton('fontsize', 'fontsize', 'customcert');
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}
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/**
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* Helper function to render the colour elements.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_colour($mform) {
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$mform->addElement('customcert_colourpicker', 'colour', get_string('fontcolour', 'customcert'));
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$mform->setType('colour', PARAM_RAW); // Need to validate that this is a valid colour.
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$mform->setDefault('colour', '#000000');
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$mform->addHelpButton('colour', 'fontcolour', 'customcert');
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}
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/**
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* Helper function to render the position elements.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_position($mform) {
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$mform->addElement('text', 'posx', get_string('posx', 'customcert'), array('size' => 10));
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$mform->setType('posx', PARAM_INT);
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$mform->setDefault('posx', 0);
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$mform->addHelpButton('posx', 'posx', 'customcert');
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$mform->addElement('text', 'posy', get_string('posy', 'customcert'), array('size' => 10));
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$mform->setType('posy', PARAM_INT);
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$mform->setDefault('posy', 0);
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$mform->addHelpButton('posy', 'posy', 'customcert');
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}
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/**
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* Helper function to render the width element.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_width($mform) {
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$mform->addElement('text', 'width', get_string('elementwidth', 'customcert'), array('size' => 10));
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$mform->setType('width', PARAM_INT);
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$mform->setDefault('width', 0);
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$mform->addHelpButton('width', 'elementwidth', 'customcert');
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}
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/**
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* Helper function to render the refpoint element.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_refpoint($mform) {
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$refpointoptions = array();
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$refpointoptions[self::CUSTOMCERT_REF_POINT_TOPLEFT] = get_string('topleft', 'customcert');
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$refpointoptions[self::CUSTOMCERT_REF_POINT_TOPCENTER] = get_string('topcenter', 'customcert');
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$refpointoptions[self::CUSTOMCERT_REF_POINT_TOPRIGHT] = get_string('topright', 'customcert');
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$mform->addElement('select', 'refpoint', get_string('refpoint', 'customcert'), $refpointoptions);
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$mform->setType('refpoint', PARAM_INT);
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$mform->setDefault('refpoint', self::CUSTOMCERT_REF_POINT_TOPCENTER);
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$mform->addHelpButton('refpoint', 'refpoint', 'customcert');
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}
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/**
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* Helper function to render the alignment form element.
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*
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* @param \MoodleQuickForm $mform the edit_form instance.
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*/
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public static function render_form_element_alignment($mform) {
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$alignmentoptions = array();
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$alignmentoptions[element::ALIGN_LEFT] = get_string('alignleft', 'customcert');
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$alignmentoptions[element::ALIGN_CENTER] = get_string('aligncenter', 'customcert');
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$alignmentoptions[element::ALIGN_RIGHT] = get_string('alignright', 'customcert');
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$mform->addElement('select', 'alignment', get_string('alignment', 'customcert'), $alignmentoptions);
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$mform->setType('alignment', PARAM_ALPHA);
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$mform->setDefault('alignment', element::ALIGN_LEFT);
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$mform->addHelpButton('alignment', 'alignment', 'customcert');
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}
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/**
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* Helper function to performs validation on the colour element.
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*
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* @param array $data the submitted data
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* @return array the validation errors
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*/
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public static function validate_form_element_colour($data) {
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$errors = array();
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// Validate the colour.
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if (!self::validate_colour($data['colour'])) {
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$errors['colour'] = get_string('invalidcolour', 'customcert');
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}
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return $errors;
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}
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/**
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* Helper function to performs validation on the position elements.
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*
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* @param array $data the submitted data
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* @return array the validation errors
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*/
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public static function validate_form_element_position($data) {
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$errors = array();
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// Check if posx is not set, or not numeric or less than 0.
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if ((!isset($data['posx'])) || (!is_numeric($data['posx'])) || ($data['posx'] < 0)) {
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$errors['posx'] = get_string('invalidposition', 'customcert', 'X');
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}
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// Check if posy is not set, or not numeric or less than 0.
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if ((!isset($data['posy'])) || (!is_numeric($data['posy'])) || ($data['posy'] < 0)) {
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$errors['posy'] = get_string('invalidposition', 'customcert', 'Y');
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}
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return $errors;
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}
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/**
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* Helper function to perform validation on the width element.
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*
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* @param array $data the submitted data
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* @return array the validation errors
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*/
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public static function validate_form_element_width($data) {
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$errors = array();
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// Check if width is less than 0.
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if (isset($data['width']) && $data['width'] < 0) {
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$errors['width'] = get_string('invalidelementwidth', 'customcert');
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}
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return $errors;
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}
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/**
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* Returns the font used for this element.
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*
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* @param \mod_customcert\element $element the customcert element
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* @return array the font and font attributes
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*/
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public static function get_font($element) {
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// Variable for the font.
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$font = $element->get_font();
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// Get the last two characters of the font name.
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$fontlength = strlen($font);
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$lastchar = $font[$fontlength - 1];
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$secondlastchar = $font[$fontlength - 2];
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// The attributes of the font.
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$attr = '';
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// Check if the last character is 'i'.
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if ($lastchar == 'i') {
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// Remove the 'i' from the font name.
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$font = substr($font, 0, -1);
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// Check if the second last char is b.
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if ($secondlastchar == 'b') {
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// Remove the 'b' from the font name.
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$font = substr($font, 0, -1);
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$attr .= 'B';
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}
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$attr .= 'I';
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} else if ($lastchar == 'b') {
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// Remove the 'b' from the font name.
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$font = substr($font, 0, -1);
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$attr .= 'B';
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}
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return array($font, $attr);
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}
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/**
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* Validates the colour selected.
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*
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* @param string $colour
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* @return bool returns true if the colour is valid, false otherwise
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*/
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public static function validate_colour($colour) {
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// List of valid HTML colour names.
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$colournames = array(
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'aliceblue', 'antiquewhite', 'aqua', 'aquamarine', 'azure',
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'beige', 'bisque', 'black', 'blanchedalmond', 'blue',
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'blueviolet', 'brown', 'burlywood', 'cadetblue', 'chartreuse',
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'chocolate', 'coral', 'cornflowerblue', 'cornsilk', 'crimson',
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'cyan', 'darkblue', 'darkcyan', 'darkgoldenrod', 'darkgray',
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'darkgrey', 'darkgreen', 'darkkhaki', 'darkmagenta',
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'darkolivegreen', 'darkorange', 'darkorchid', 'darkred',
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'darksalmon', 'darkseagreen', 'darkslateblue', 'darkslategray',
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'darkslategrey', 'darkturquoise', 'darkviolet', 'deeppink',
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'deepskyblue', 'dimgray', 'dimgrey', 'dodgerblue', 'firebrick',
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'floralwhite', 'forestgreen', 'fuchsia', 'gainsboro',
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'ghostwhite', 'gold', 'goldenrod', 'gray', 'grey', 'green',
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'greenyellow', 'honeydew', 'hotpink', 'indianred', 'indigo',
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'ivory', 'khaki', 'lavender', 'lavenderblush', 'lawngreen',
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'lemonchiffon', 'lightblue', 'lightcoral', 'lightcyan',
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'lightgoldenrodyellow', 'lightgray', 'lightgrey', 'lightgreen',
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'lightpink', 'lightsalmon', 'lightseagreen', 'lightskyblue',
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'lightslategray', 'lightslategrey', 'lightsteelblue', 'lightyellow',
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'lime', 'limegreen', 'linen', 'magenta', 'maroon',
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'mediumaquamarine', 'mediumblue', 'mediumorchid', 'mediumpurple',
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'mediumseagreen', 'mediumslateblue', 'mediumspringgreen',
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'mediumturquoise', 'mediumvioletred', 'midnightblue', 'mintcream',
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'mistyrose', 'moccasin', 'navajowhite', 'navy', 'oldlace', 'olive',
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'olivedrab', 'orange', 'orangered', 'orchid', 'palegoldenrod',
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'palegreen', 'paleturquoise', 'palevioletred', 'papayawhip',
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'peachpuff', 'peru', 'pink', 'plum', 'powderblue', 'purple', 'red',
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'rosybrown', 'royalblue', 'saddlebrown', 'salmon', 'sandybrown',
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'seagreen', 'seashell', 'sienna', 'silver', 'skyblue', 'slateblue',
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'slategray', 'slategrey', 'snow', 'springgreen', 'steelblue', 'tan',
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'teal', 'thistle', 'tomato', 'turquoise', 'violet', 'wheat', 'white',
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'whitesmoke', 'yellow', 'yellowgreen'
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);
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if (preg_match('/^#?([[:xdigit:]]{3}){1,2}$/', $colour)) {
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return true;
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} else if (in_array(strtolower($colour), $colournames)) {
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return true;
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}
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return false;
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}
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/**
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* Helper function that returns the sequence on a specified customcert page for a
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* newly created element.
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*
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* @param int $pageid the id of the page we are adding this element to
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* @return int the element number
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*/
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public static function get_element_sequence($pageid) {
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global $DB;
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// Set the sequence of the element we are creating.
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$sequence = 1;
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// Check if there already elements that exist, if so, overwrite value.
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$sql = "SELECT MAX(sequence) as maxsequence
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FROM {customcert_elements}
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WHERE pageid = :id";
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// Get the current max sequence on this page and add 1 to get the new sequence.
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if ($maxseq = $DB->get_record_sql($sql, array('id' => $pageid))) {
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$sequence = $maxseq->maxsequence + 1;
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}
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return $sequence;
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}
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/**
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* Helper function that returns the course id for this element.
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*
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* @param int $elementid The element id
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* @return int The course id
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*/
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public static function get_courseid($elementid) {
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global $DB, $SITE;
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$sql = "SELECT course
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FROM {customcert} c
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INNER JOIN {customcert_pages} cp
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ON c.templateid = cp.templateid
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INNER JOIN {customcert_elements} ce
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ON cp.id = ce.pageid
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WHERE ce.id = :elementid";
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// Check if there is a course associated with this element.
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if ($course = $DB->get_record_sql($sql, array('elementid' => $elementid))) {
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return $course->course;
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} else { // Must be in a site template.
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return $SITE->id;
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}
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}
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/**
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* Helper function that returns the context for this element.
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*
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* @param int $elementid The element id
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* @return \context The context
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*/
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public static function get_context(int $elementid) : \context {
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global $DB;
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$sql = "SELECT ct.contextid
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FROM {customcert_templates} ct
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INNER JOIN {customcert_pages} cp
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ON ct.id = cp.templateid
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INNER JOIN {customcert_elements} ce
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ON cp.id = ce.pageid
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WHERE ce.id = :elementid";
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$contextid = $DB->get_field_sql($sql, array('elementid' => $elementid), MUST_EXIST);
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return \context::instance_by_id($contextid);
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}
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/**
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* Return the list of possible elements to add.
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*
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* @return array the list of element types that can be used.
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*/
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public static function get_available_element_types() {
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global $CFG;
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// Array to store the element types.
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$options = array();
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// Check that the directory exists.
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$elementdir = "$CFG->dirroot/mod/customcert/element";
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if (file_exists($elementdir)) {
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// Get directory contents.
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$elementfolders = new \DirectoryIterator($elementdir);
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// Loop through the elements folder.
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foreach ($elementfolders as $elementfolder) {
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// If it is not a directory or it is '.' or '..', skip it.
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if (!$elementfolder->isDir() || $elementfolder->isDot()) {
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continue;
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}
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// Check that the standard class exists, if not we do
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// not want to display it as an option as it will not work.
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$foldername = $elementfolder->getFilename();
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// Get the class name.
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$classname = '\\customcertelement_' . $foldername . '\\element';
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// Ensure the necessary class exists.
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if (class_exists($classname)) {
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// Additionally, check if the user is allowed to add the element at all.
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if ($classname::can_add()) {
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$component = "customcertelement_{$foldername}";
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$options[$foldername] = get_string('pluginname', $component);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
\core_collator::asort($options);
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* Helper function to return all the grades items for a given course.
|
|
*
|
|
* @param \stdClass $course The course we want to return the grade items for
|
|
* @return array the array of gradeable items in the course
|
|
*/
|
|
public static function get_grade_items($course) {
|
|
// Array to store the grade items.
|
|
$arrgradeitems = array();
|
|
|
|
// Get other non-module related grade items.
|
|
if ($gradeitems = \grade_item::fetch_all(['courseid' => $course->id])) {
|
|
foreach ($gradeitems as $gi) {
|
|
if ($gi->is_course_item()) {
|
|
continue; // Skipping for legacy reasons - this was added to individual elements.
|
|
}
|
|
|
|
if ($gi->is_external_item()) {
|
|
$cm = get_coursemodule_from_instance($gi->itemmodule, $gi->iteminstance, $course->id);
|
|
$modcontext = \context_module::instance($cm->id);
|
|
$modname = format_string($cm->name, true, array('context' => $modcontext));
|
|
}
|
|
|
|
if ($gi->is_external_item() && !$gi->is_outcome_item()) {
|
|
// Due to legacy reasons we are storing the course module ID here rather than the grade item id.
|
|
// If we were to change we would need to provide upgrade steps to convert cm->id to gi->id.
|
|
$arrgradeitems[$cm->id] = get_string('activity', 'mod_customcert') . ' : ' . $gi->get_name();
|
|
} else if ($gi->is_external_item() && $gi->is_outcome_item()) {
|
|
// Get the name of the activity.
|
|
$optionname = get_string('gradeoutcome', 'mod_customcert') . ' : ' . $modname . " - " . $gi->get_name();
|
|
$arrgradeitems['gradeitem:' . $gi->id] = $optionname;
|
|
} else {
|
|
$arrgradeitems['gradeitem:' . $gi->id] = get_string('gradeitem', 'grades') . ' : ' . $gi->get_name(true);
|
|
}
|
|
}
|
|
|
|
// Alphabetise this.
|
|
asort($arrgradeitems);
|
|
}
|
|
|
|
return $arrgradeitems;
|
|
}
|
|
|
|
/**
|
|
* Helper function to return the grade information for a course for a specified user.
|
|
*
|
|
* @param int $courseid
|
|
* @param int $gradeformat
|
|
* @param int $userid
|
|
* @return grade_information|bool the grade information, or false if there is none.
|
|
*/
|
|
public static function get_course_grade_info($courseid, $gradeformat, $userid) {
|
|
$courseitem = \grade_item::fetch_course_item($courseid);
|
|
|
|
if (!$courseitem) {
|
|
return false;
|
|
}
|
|
|
|
$grade = new \grade_grade(array('itemid' => $courseitem->id, 'userid' => $userid));
|
|
|
|
return new grade_information(
|
|
$courseitem->get_name(),
|
|
$grade->finalgrade,
|
|
grade_format_gradevalue($grade->finalgrade, $courseitem, true, $gradeformat),
|
|
$grade->get_dategraded()
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Helper function to return the grade information for a module for a specified user.
|
|
*
|
|
* @param int $cmid
|
|
* @param int $gradeformat
|
|
* @param int $userid
|
|
* @return grade_information|bool the grade information, or false if there is none.
|
|
*/
|
|
public static function get_mod_grade_info($cmid, $gradeformat, $userid) {
|
|
global $DB;
|
|
|
|
if (!$cm = $DB->get_record('course_modules', array('id' => $cmid))) {
|
|
return false;
|
|
}
|
|
|
|
if (!$module = $DB->get_record('modules', array('id' => $cm->module))) {
|
|
return false;
|
|
}
|
|
|
|
$params = [
|
|
'itemtype' => 'mod',
|
|
'itemmodule' => $module->name,
|
|
'iteminstance' => $cm->instance,
|
|
'courseid' => $cm->course,
|
|
'itemnumber' => 0
|
|
];
|
|
$gradeitem = \grade_item::fetch($params);
|
|
|
|
if (empty($gradeitem)) {
|
|
return false;
|
|
}
|
|
|
|
$grade = grade_get_grades(
|
|
$cm->course,
|
|
'mod',
|
|
$module->name,
|
|
$cm->instance,
|
|
$userid
|
|
);
|
|
|
|
if (!isset($grade->items[0]->grades[$userid])) {
|
|
return false;
|
|
}
|
|
|
|
$gradebookgrade = $grade->items[0]->grades[$userid];
|
|
|
|
$dategraded = null;
|
|
if (!empty($gradebookgrade->dategraded)) {
|
|
$dategraded = $gradebookgrade->dategraded;
|
|
}
|
|
|
|
$displaygrade = grade_format_gradevalue($gradebookgrade->grade, $gradeitem, true, $gradeformat);
|
|
|
|
return new grade_information(
|
|
$gradeitem->get_name(),
|
|
$gradebookgrade->grade,
|
|
$displaygrade,
|
|
$dategraded
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Helper function to return the grade information for a grade item for a specified user.
|
|
*
|
|
* @param int $gradeitemid
|
|
* @param int $gradeformat
|
|
* @param int $userid
|
|
* @return grade_information|bool the grade information, or false if there is none.
|
|
*/
|
|
public static function get_grade_item_info($gradeitemid, $gradeformat, $userid) {
|
|
if (!$gradeitem = \grade_item::fetch(['id' => $gradeitemid])) {
|
|
return false;
|
|
}
|
|
|
|
$grade = new \grade_grade(array('itemid' => $gradeitem->id, 'userid' => $userid));
|
|
|
|
return new grade_information(
|
|
$gradeitem->get_name(),
|
|
$grade->finalgrade,
|
|
grade_format_gradevalue($grade->finalgrade, $gradeitem, true, $gradeformat),
|
|
$grade->get_dategraded()
|
|
);
|
|
}
|
|
}
|