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#46 Added digital signature element

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This commit is contained in:
Mark Nelson 2017-08-26 18:50:24 +08:00
parent 309815eb7c
commit e087567b03
7 changed files with 419 additions and 4 deletions
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5
classes/certificate.php
View file

@ -86,13 +86,14 @@ class certificate {
*
* @param int $draftitemid the draft area containing the files
* @param int $contextid the context we are storing this image in
* @param string $filearea indentifies the file area.
*/
public static function upload_imagefiles($draftitemid, $contextid) {
public static function upload_files($draftitemid, $contextid, $filearea = 'image') {
global $CFG;
// Save the file if it exists that is currently in the draft area.
require_once($CFG->dirroot . '/lib/filelib.php');
file_save_draft_area_files($draftitemid, $contextid, 'mod_customcert', 'image', 0);
file_save_draft_area_files($draftitemid, $contextid, 'mod_customcert', $filearea, 0);
}
/**

330
element/digitalsignature/classes/element.php Normal file
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@ -0,0 +1,330 @@
<?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/>.
namespace customcertelement_digitalsignature;
defined('MOODLE_INTERNAL') || die();
/**
* The customcert element signature's core interaction API.
*
* @package customcertelement_digitalsignature
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class element extends \customcertelement_image\element {
/**
* @var array The file manager options for the certificate.
*/
protected $signaturefilemanageroptions = array();
/**
* Constructor.
*
* @param \stdClass $element the element data
*/
public function __construct($element) {
global $COURSE;
$this->signaturefilemanageroptions = [
'maxbytes' => $COURSE->maxbytes,
'subdirs' => 1,
'accepted_types' => ['.crt']
];
parent::__construct($element);
}
/**
* This function renders the form elements when adding a customcert element.
*
* @param \mod_customcert\edit_element_form $mform the edit_form instance
*/
public function render_form_elements($mform) {
$mform->addElement('select', 'fileid', get_string('image', 'customcertelement_image'), self::get_images());
$mform->addElement('select', 'signaturefileid', get_string('digitalsignature', 'customcertelement_digitalsignature'),
self::get_signatures());
$mform->addElement('text', 'signaturename', get_string('signaturename', 'customcertelement_digitalsignature'));
$mform->setType('signaturename', PARAM_TEXT);
$mform->setDefault('signaturename', '');
$mform->addElement('passwordunmask', 'signaturepassword',
get_string('signaturepassword', 'customcertelement_digitalsignature'));
$mform->setType('signaturepassword', PARAM_TEXT);
$mform->setDefault('signaturepassword', '');
$mform->addElement('text', 'signaturelocation', get_string('signaturelocation', 'customcertelement_digitalsignature'));
$mform->setType('signaturelocation', PARAM_TEXT);
$mform->setDefault('signaturelocation', '');
$mform->addElement('text', 'signaturereason', get_string('signaturereason', 'customcertelement_digitalsignature'));
$mform->setType('signaturereason', PARAM_TEXT);
$mform->setDefault('signaturereason', '');
$mform->addElement('text', 'signaturecontactinfo',
get_string('signaturecontactinfo', 'customcertelement_digitalsignature'));
$mform->setType('signaturecontactinfo', PARAM_TEXT);
$mform->setDefault('signaturecontactinfo', '');
$mform->addElement('text', 'width', get_string('width', 'customcertelement_image'), array('size' => 10));
$mform->setType('width', PARAM_INT);
$mform->setDefault('width', 0);
$mform->addHelpButton('width', 'width', 'customcertelement_image');
$mform->addElement('text', 'height', get_string('height', 'customcertelement_image'), array('size' => 10));
$mform->setType('height', PARAM_INT);
$mform->setDefault('height', 0);
$mform->addHelpButton('height', 'height', 'customcertelement_image');
if (get_config('customcert', 'showposxy')) {
\mod_customcert\element_helper::render_form_element_position($mform);
}
$mform->addElement('filemanager', 'customcertimage', get_string('uploadimage', 'customcert'), '',
$this->filemanageroptions);
$mform->addElement('filemanager', 'digitalsignature',
get_string('uploaddigitalsignature', 'customcertelement_digitalsignature'), '',
$this->signaturefilemanageroptions);
}
/**
* Handles saving the form elements created by this element.
* Can be overridden if more functionality is needed.
*
* @param \stdClass $data the form data
* @return bool true of success, false otherwise.
*/
public function save_form_elements($data) {
global $COURSE, $SITE;
// Set the context.
if ($COURSE->id == $SITE->id) {
$context = \context_system::instance();
} else {
$context = \context_course::instance($COURSE->id);
}
// Handle file uploads.
\mod_customcert\certificate::upload_files($data->customcertimage, $context->id);
// Handle file certificate uploads.
\mod_customcert\certificate::upload_files($data->digitalsignature, $context->id, 'signature');
return parent::save_form_elements($data);
}
/**
* This will handle how form data will be saved into the data column in the
* customcert_elements table.
*
* @param \stdClass $data the form data
* @return string the json encoded array
*/
public function save_unique_data($data) {
$arrtostore = [
'signaturename' => $data->signaturename,
'signaturepassword' => $data->signaturepassword,
'signaturelocation' => $data->signaturelocation,
'signaturereason' => $data->signaturereason,
'signaturecontactinfo' => $data->signaturecontactinfo,
'width' => !empty($data->width) ? (int) $data->width : 0,
'height' => !empty($data->height) ? (int) $data->height : 0
];
// Array of data we will be storing in the database.
$fs = get_file_storage();
if (!empty($data->fileid)) {
if ($file = $fs->get_file_by_id($data->fileid)) {
$arrtostore += [
'contextid' => $file->get_contextid(),
'filearea' => $file->get_filearea(),
'itemid' => $file->get_itemid(),
'filepath' => $file->get_filepath(),
'filename' => $file->get_filename(),
];
}
}
if (!empty($data->signaturefileid)) {
if ($signaturefile = $fs->get_file_by_id($data->signaturefileid)) {
$arrtostore += [
'signaturecontextid' => $signaturefile->get_contextid(),
'signaturefilearea' => $signaturefile->get_filearea(),
'signatureitemid' => $signaturefile->get_itemid(),
'signaturefilepath' => $signaturefile->get_filepath(),
'signaturefilename' => $signaturefile->get_filename()
];
}
}
return json_encode($arrtostore);
}
/**
* Handles rendering the element on the pdf.
*
* @param \pdf $pdf the pdf object
* @param bool $preview true if it is a preview, false otherwise
* @param \stdClass $user the user we are rendering this for
*/
public function render($pdf, $preview, $user) {
// If there is no element data, we have nothing to display.
if (empty($this->get_data())) {
return;
}
$imageinfo = json_decode($this->get_data());
// If there is no file, we have nothing to display.
if (empty($imageinfo->filename)) {
return;
}
// If there is no signature file, we have nothing to display.
if (empty($imageinfo->signaturefilename)) {
return;
}
if ($file = $this->get_file()) {
$location = make_request_directory() . '/target';
$file->copy_content_to($location);
$mimetype = $file->get_mimetype();
if ($mimetype == 'image/svg+xml') {
$pdf->ImageSVG($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
} else {
$pdf->Image($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
}
}
if ($signaturefile = $this->get_signature_file()) {
$location = make_request_directory() . '/target';
$signaturefile->copy_content_to($location);
$info = [
'Name' => $imageinfo->signaturename,
'Location' => $imageinfo->signaturelocation,
'Reason' => $imageinfo->signaturereason,
'ContactInfo' => $imageinfo->signaturecontactinfo
];
$pdf->setSignature('file://' . $location, '', $imageinfo->signaturepassword, '', 2, $info);
$pdf->setSignatureAppearance($this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
}
}
/**
* Sets the data on the form when editing an element.
*
* @param \mod_customcert\edit_element_form $mform the edit_form instance
*/
public function definition_after_data($mform) {
global $COURSE, $SITE;
// Set the context.
if ($COURSE->id == $SITE->id) {
$context = \context_system::instance();
} else {
$context = \context_course::instance($COURSE->id);
}
if (!empty($this->get_data())) {
$imageinfo = json_decode($this->get_data());
$element = $mform->getElement('signaturename');
$element->setValue($imageinfo->signaturename);
$element = $mform->getElement('signaturepassword');
$element->setValue($imageinfo->signaturepassword);
$element = $mform->getElement('signaturelocation');
$element->setValue($imageinfo->signaturelocation);
$element = $mform->getElement('signaturereason');
$element->setValue($imageinfo->signaturereason);
$element = $mform->getElement('signaturecontactinfo');
$element->setValue($imageinfo->signaturecontactinfo);
if (!empty($imageinfo->signaturefilename)) {
if ($signaturefile = $this->get_signature_file()) {
$element = $mform->getElement('signaturefileid');
$element->setValue($signaturefile->get_id());
}
}
}
// Editing existing instance - copy existing files into draft area.
$draftitemid = file_get_submitted_draft_itemid('digitalsignature');
file_prepare_draft_area($draftitemid, $context->id, 'mod_customcert', 'signature', 0,
$this->signaturefilemanageroptions);
$element = $mform->getElement('digitalsignature');
$element->setValue($draftitemid);
parent::definition_after_data($mform);
}
/**
* Return the list of possible images to use.
*
* @return array the list of images that can be used
*/
public static function get_signatures() {
global $COURSE;
// Create file storage object.
$fs = get_file_storage();
// The array used to store the digital signatures.
$arrfiles = array();
// Loop through the files uploaded in the system context.
if ($files = $fs->get_area_files(\context_system::instance()->id, 'mod_customcert', 'signature', false,
'filename', false)) {
foreach ($files as $hash => $file) {
$arrfiles[$file->get_id()] = $file->get_filename();
}
}
// Loop through the files uploaded in the course context.
if ($files = $fs->get_area_files(\context_course::instance($COURSE->id)->id, 'mod_customcert', 'signature', false,
'filename', false)) {
foreach ($files as $hash => $file) {
$arrfiles[$file->get_id()] = $file->get_filename();
}
}
\core_collator::asort($arrfiles);
$arrfiles = array('0' => get_string('nosignature', 'customcertelement_digitalsignature')) + $arrfiles;
return $arrfiles;
}
/**
* Fetch stored file.
*
* @return \stored_file|bool stored_file instance if exists, false if not
*/
public function get_signature_file() {
$imageinfo = json_decode($this->get_data());
$fs = get_file_storage();
return $fs->get_file($imageinfo->signaturecontextid, 'mod_customcert', $imageinfo->signaturefilearea,
$imageinfo->signatureitemid, $imageinfo->signaturefilepath, $imageinfo->signaturefilename);
}
}

33
element/digitalsignature/lang/en/customcertelement_digitalsignature.php Normal file
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@ -0,0 +1,33 @@
<?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/>.
/**
* Strings for component 'customcertelement_digitalsignature', language 'en'.
*
* @package customcertelement_digitalsignature
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
$string['digitalsignature'] = 'Digital signature';
$string['nosignature'] = 'No signature';
$string['pluginname'] = 'Digital signature';
$string['signaturename'] = 'Signature name';
$string['signaturepassword'] = 'Signature password';
$string['signaturelocation'] = 'Signature location';
$string['signaturereason'] = 'Signature reason';
$string['signaturecontactinfo'] = 'Signature contact info';
$string['uploaddigitalsignature'] = 'Upload digital signature';

29
element/digitalsignature/version.php Normal file
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@ -0,0 +1,29 @@
<?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/>.
/**
* This file contains the version information for the digital signature plugin.
*
* @package customcertelement_digitalsignature
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
$plugin->version = 2016120500; // The current module version (Date: YYYYMMDDXX).
$plugin->requires = 2016120500; // Requires this Moodle version (3.2).
$plugin->component = 'customcertelement_digitalsignature';

2
element/image/classes/element.php
View file

@ -130,7 +130,7 @@ class element extends \mod_customcert\element {
}
// Handle file uploads.
\mod_customcert\certificate::upload_imagefiles($data->customcertimage, $context->id);
\mod_customcert\certificate::upload_files($data->customcertimage, $context->id);
return parent::save_form_elements($data);
}

22
tests/behat/managing_elements.feature
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@ -119,6 +119,28 @@ Feature: Being able to manage elements in a certificate template
| Width | 20 |
| Reference point location | Top left |
And I press "Save changes"
# Digital signature.
And I add the element "Digital signature" to page "1" of the "Custom certificate 1" certificate template
And I set the following fields to these values:
| Signature name | This is the signature name |
| Signature password | Some awesome password |
| Signature location | Mordor |
| Signature reason | Meh, felt like it. |
| Signature contact info | Sauron |
| Width | 25 |
| Height | 15 |
And I press "Save changes"
And I should see "Digital signature" in the "elementstable" "table"
And I click on ".edit-icon" "css_element" in the "Digital signature" "table_row"
And the following fields match these values:
| Signature name | This is the signature name |
| Signature password | Some awesome password |
| Signature location | Mordor |
| Signature reason | Meh, felt like it. |
| Signature contact info | Sauron |
| Width | 25 |
| Height | 15 |
And I press "Save changes"
# Grade.
And I add the element "Grade" to page "1" of the "Custom certificate 1" certificate template
And I set the following fields to these values:

2
upload_image.php
View file

@ -44,7 +44,7 @@ if ($uploadform->is_cancelled()) {
redirect(new moodle_url('/admin/settings.php?section=modsettingcustomcert'));
} else if ($data = $uploadform->get_data()) {
// Handle file uploads.
\mod_customcert\certificate::upload_imagefiles($data->customcertimage, $context->id);
\mod_customcert\certificate::upload_files($data->customcertimage, $context->id);
redirect(new moodle_url('/mod/customcert/upload_image.php'), get_string('changessaved'));
}