moodle-mod_htmlcert/edit_form.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/>.
defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
require_once($CFG->dirroot . '/course/moodleform_mod.php');
require_once($CFG->dirroot . '/mod/customcert/lib.php');
require_once($CFG->dirroot . '/mod/customcert/includes/colourpicker.php');
MoodleQuickForm::registerElementType('customcert_colourpicker',
$CFG->dirroot . '/mod/customcert/includes/colourpicker.php', 'MoodleQuickForm_customcert_colourpicker');
/**
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* The form for handling the layout of the customcert instance.
*
* @package mod_customcert
* @copyright Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mod_customcert_edit_form extends moodleform {
/**
* The instance id.
*/
private $id = null;
/**
* The total number of pages for this cert.
*/
private $numpages = 1;
/**
* The filemanager options.
*/
private $filemanageroptions = array();
/**
* The array of element objects loaded on this form.
*/
private $elementobjects = array();
/**
* Form definition.
*/
function definition() {
global $CFG, $DB, $OUTPUT;
$this->id = $this->_customdata['customcertid'];
$this->filemanageroptions = array('maxbytes' => $this->_customdata['course']->maxbytes,
'subdirs' => 1,
'accepted_types' => 'image');
$mform =& $this->_form;
// Get the number of pages for this module.
if ($pages = $DB->get_records('customcert_pages', array('customcertid' => $this->id), 'pagenumber')) {
$this->numpages = count($pages);
foreach ($pages as $p) {
$this->add_customcert_page_elements($p);
}
} else {
$this->add_customcert_page_elements();
}
$mform->closeHeaderBefore('addcertpage');
$mform->addElement('header', 'uploadimage', get_string('uploadimage', 'customcert'));
$mform->addElement('filemanager', 'customcertimage', get_string('uploadimage', 'customcert'), '', $this->filemanageroptions);
// Add the submit buttons.
$group = array();
$group[] = $mform->createElement('submit', 'submitbutton', get_string('savechanges'));
$group[] = $mform->createElement('submit', 'addcertpage', get_string('addcertpage', 'customcert'));
$mform->addElement('group', 'loadtemplategroup', '', $group, '', false);
$mform->addElement('hidden', 'id');
$mform->setType('id', PARAM_INT);
$mform->setDefault('id', $this->id);
$mform->addElement('hidden', 'cmid');
$mform->setType('cmid', PARAM_INT);
$mform->setDefault('cmid', $this->_customdata['cmid']);
}
/**
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* Fill in the current page data for this customcert.
*/
function definition_after_data() {
global $DB;
$mform = $this->_form;
// Editing existing instance - copy existing files into draft area.
$draftitemid = file_get_submitted_draft_itemid('customcertimage');
file_prepare_draft_area($draftitemid, context_system::instance()->id, 'mod_customcert', 'image', 0, $this->filemanageroptions);
$element = $mform->getElement('customcertimage');
$element->setValue($draftitemid);
// Check that we are updating a current customcert.
if ($this->id) {
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// Get the pages for this customcert.
if ($pages = $DB->get_records('customcert_pages', array('customcertid' => $this->id))) {
// Loop through the pages.
foreach ($pages as $p) {
// Set the orientation.
$element = $mform->getElement('orientation_' . $p->id);
$element->setValue($p->orientation);
// Set the width.
$element = $mform->getElement('width_' . $p->id);
$element->setValue($p->width);
// Set the height.
$element = $mform->getElement('height_' . $p->id);
$element->setValue($p->height);
}
}
}
}
/**
* Some basic validation.
*
* @param $data
* @param $files
* @return array the errors that were found
*/
public function validation($data, $files) {
$errors = parent::validation($data, $files);
// Go through the data and check any width or height values.
foreach ($data as $key => $value) {
if (strpos($key, 'width_') !== false) {
$page = str_replace('width_', '', $key);
$widthid = 'width_' . $page;
// Validate that the width is a valid value.
if ((!isset($data[$widthid])) || (!is_numeric($data[$widthid])) || ($data[$widthid] <= 0)) {
$errors[$widthid] = get_string('widthnotvalid', 'customcert');
}
}
if (strpos($key, 'height_') !== false) {
$page = str_replace('height_', '', $key);
$heightid = 'height_' . $page;
// Validate that the height is a valid value.
if ((!isset($data[$heightid])) || (!is_numeric($data[$heightid])) || ($data[$heightid] <= 0)) {
$errors[$heightid] = get_string('heightnotvalid', 'customcert');
}
}
}
// Go through each element and perform validation.
if (!empty($this->elementobjects)) {
foreach ($this->elementobjects as $e) {
$errors += $e->validate_form_elements($data, $files);
}
}
return $errors;
}
/**
* Adds the page elements to the form.
*
* @param stdClass $page the customcert page
**/
private function add_customcert_page_elements($page = null) {
global $CFG, $DB, $OUTPUT;
// Create the form object.
$mform =& $this->_form;
// If page is null we are adding a customcert, not editing one, so set pageid to 1.
if (is_null($page)) {
$pageid = 1;
$pagenum = 1;
} else {
$pageid = $page->id;
$pagenum = $page->pagenumber;
}
$mform->addElement('header', 'page_' . $pageid, get_string('page', 'customcert', $pagenum));
// Place the ordering arrows.
// Only display the move up arrow if it is not the first.
if ($pagenum > 1) {
$url = new moodle_url('/mod/customcert/edit.php', array('cmid' => $this->_customdata['cmid'], 'moveup' => $pageid));
$mform->addElement('html', $OUTPUT->action_icon($url, new pix_icon('t/up', get_string('moveup'))));
}
// Only display the move down arrow if it is not the last.
if ($pagenum < $this->numpages) {
$url = new moodle_url('/mod/customcert/edit.php', array('cmid' => $this->_customdata['cmid'], 'movedown' => $pageid));
$mform->addElement('html', $OUTPUT->action_icon($url, new pix_icon('t/down', get_string('movedown'))));
}
$orientationoptions = array('L' => get_string('landscape', 'customcert'),
'P' => get_string('portrait', 'customcert'));
$mform->addElement('select', 'orientation_' . $pageid, get_string('orientation', 'customcert'), $orientationoptions);
$mform->setDefault('orientation_' . $pageid, 'P');
$mform->addHelpButton('orientation_' . $pageid, 'orientation', 'customcert');
$mform->addElement('text', 'width_' . $pageid, get_string('width', 'customcert'));
$mform->setType('width_' . $pageid, PARAM_INT);
$mform->setDefault('width_' . $pageid, '210');
$mform->addRule('width_' . $pageid, null, 'required', null, 'client');
$mform->addHelpButton('width_' . $pageid, 'width', 'customcert');
$mform->addElement('text', 'height_' . $pageid, get_string('height', 'customcert'));
$mform->setType('height_' . $pageid, PARAM_INT);
$mform->setDefault('height_' . $pageid, '297');
$mform->addRule('height_' . $pageid, null, 'required', null, 'client');
$mform->addHelpButton('height_' . $pageid, 'height', 'customcert');
$group = array();
$group[] = $mform->createElement('select', 'element_' . $pageid, '', customcert_get_elements());
$group[] = $mform->createElement('submit', 'addelement_' . $pageid, get_string('addelement', 'customcert'));
$mform->addElement('group', 'elementgroup', '', $group, '', false);
// Add option to delete this page if it is not the first page.
if ($pagenum > 1) {
$mform->addElement('html', html_writer::start_tag('div', array('class' => 'deletebutton')));
$mform->addElement('submit', 'deletecertpage_' . $pageid, get_string('deletecertpage', 'customcert'));
$mform->addElement('html', html_writer::end_tag('div'));
}
// Check that this page is not a newly created one with no data in the database.
if (!is_null($page)) {
// Check if there are elements to add.
if ($elements = $DB->get_records('customcert_elements', array('pageid' => $pageid), 'sequence ASC')) {
// Get the total number of elements.
$numelements = count($elements);
// Loop through and add the ones present.
foreach ($elements as $element) {
$classfile = "{$CFG->dirroot}/mod/customcert/elements/{$element->element}/lib.php";
// It's possible this element was added to the database then the folder was deleted, if
// this is the case we do not want to render these elements as an error will occur.
if (file_exists($classfile)) {
// Add element header.
$mform->addElement('header', 'headerelement_' . $element->id, get_string('page', 'customcert', $pagenum) . " - " .
get_string('pluginname', 'customcertelement_' . $element->element));
// We do not need to expand these elements if the modified time is greater than the created time as it
// means the values have already been altered by the user - ie. the element has not just been created.
if ($element->timemodified > $element->timecreated) {
$mform->setExpanded('headerelement_' . $element->id, false);
} else {
$mform->setExpanded('headerelement_' . $element->id, true);
}
// Only display the move up arrow if it is not the first.
if ($element->sequence > 1) {
$url = new moodle_url('/mod/customcert/edit.php', array('cmid' => $this->_customdata['cmid'], 'emoveup' => $element->id));
$mform->addElement('html', $OUTPUT->action_icon($url, new pix_icon('t/up', get_string('moveup'))));
}
// Only display the move down arrow if it is not the last.
if ($element->sequence < $numelements) {
$url = new moodle_url('/mod/customcert/edit.php', array('cmid' => $this->_customdata['cmid'], 'emovedown' => $element->id));
$mform->addElement('html', $OUTPUT->action_icon($url, new pix_icon('t/down', get_string('movedown'))));
}
// Add the page number to the element so we can use within the element.
$element->pagenum = $pagenum;
// Get the classname.
$classname = "customcert_element_{$element->element}";
$e = new $classname($element);
$e->render_form_elements($mform);
// Add this to the objects array.
$this->elementobjects[] = $e;
// Add submit button to delete this.
$mform->addElement('html', html_writer::start_tag('div', array('class' => 'deletebutton')));
$mform->addElement('submit', 'deleteelement_' . $element->id, get_string('deleteelement', 'customcert'));
$mform->addElement('html', html_writer::end_tag('div'));
}
}
}
}
}
}