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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/>.
/**
* A form for the creation and editing of groups.
*
* @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core_group
*/
defined('MOODLE_INTERNAL') || die;
require_once($CFG->dirroot.'/lib/formslib.php');
/**
* Group form class
*
* @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core_group
*/
class group_form extends moodleform {
/**
* Definition of the form
*/
function definition () {
global $USER, $CFG, $COURSE;
$coursecontext = context_course::instance($COURSE->id);
$mform =& $this->_form;
$editoroptions = $this->_customdata['editoroptions'];
$mform->addElement('header', 'general', get_string('general', 'form'));
$mform->addElement('text','name', get_string('groupname', 'group'),'maxlength="254" size="50"');
$mform->addRule('name', get_string('required'), 'required', null, 'client');
$mform->setType('name', PARAM_TEXT);
$mform->addElement('text','idnumber', get_string('idnumbergroup'), 'maxlength="100" size="10"');
$mform->addHelpButton('idnumber', 'idnumbergroup');
$mform->setType('idnumber', PARAM_RAW);
if (!has_capability('moodle/course:changeidnumber', $coursecontext)) {
$mform->hardFreeze('idnumber');
}
$mform->addElement('editor', 'description_editor', get_string('groupdescription', 'group'), null, $editoroptions);
$mform->setType('description_editor', PARAM_RAW);
$mform->addElement('passwordunmask', 'enrolmentkey', get_string('enrolmentkey', 'group'), 'maxlength="254" size="24"', get_string('enrolmentkey', 'group'));
$mform->addHelpButton('enrolmentkey', 'enrolmentkey', 'group');
$mform->setType('enrolmentkey', PARAM_RAW);
// Group conversation messaging.
if (\core_message\api::can_create_group_conversation($USER->id, $coursecontext)) {
$mform->addElement('selectyesno', 'enablemessaging', get_string('enablemessaging', 'group'));
$mform->addHelpButton('enablemessaging', 'enablemessaging', 'group');
}
$mform->addElement('static', 'currentpicture', get_string('currentpicture'));
$mform->addElement('checkbox', 'deletepicture', get_string('delete'));
$mform->setDefault('deletepicture', 0);
$options = array(get_string('no'), get_string('yes'));
$mform->addElement('select', 'hidepicture', get_string('hidepicture'), $options);
$mform->addElement('filepicker', 'imagefile', get_string('newpicture', 'group'));
$mform->addHelpButton('imagefile', 'newpicture', 'group');
$mform->addElement('hidden','id');
$mform->setType('id', PARAM_INT);
$mform->addElement('hidden','courseid');
$mform->setType('courseid', PARAM_INT);
$this->add_action_buttons();
}
/**
* Extend the form definition after the data has been parsed.
*/
public function definition_after_data() {
global $COURSE, $DB, $USER;
$mform = $this->_form;
$groupid = $mform->getElementValue('id');
$coursecontext = context_course::instance($COURSE->id);
if ($group = $DB->get_record('groups', array('id' => $groupid))) {
// If can create group conversation then get if a conversation area exists and it is enabled.
if (\core_message\api::can_create_group_conversation($USER->id, $coursecontext)) {
if (\core_message\api::is_conversation_area_enabled('core_group', 'groups', $groupid, $coursecontext->id)) {
$mform->getElement('enablemessaging')->setSelected(1);
}
}
// Print picture.
if (!($pic = print_group_picture($group, $COURSE->id, true, true, false))) {
$pic = get_string('none');
if ($mform->elementExists('deletepicture')) {
$mform->removeElement('deletepicture');
}
}
$imageelement = $mform->getElement('currentpicture');
$imageelement->setValue($pic);
} else {
if ($mform->elementExists('currentpicture')) {
$mform->removeElement('currentpicture');
}
if ($mform->elementExists('deletepicture')) {
$mform->removeElement('deletepicture');
}
}
}
/**
* Form validation
*
* @param array $data
* @param array $files
* @return array $errors An array of errors
*/
function validation($data, $files) {
global $COURSE, $DB, $CFG;
$errors = parent::validation($data, $files);
$name = trim($data['name']);
if (isset($data['idnumber'])) {
$idnumber = trim($data['idnumber']);
} else {
$idnumber = '';
}
if ($data['id'] and $group = $DB->get_record('groups', array('id'=>$data['id']))) {
if (core_text::strtolower($group->name) != core_text::strtolower($name)) {
if (groups_get_group_by_name($COURSE->id, $name)) {
$errors['name'] = get_string('groupnameexists', 'group', $name);
}
}
if (!empty($idnumber) && $group->idnumber != $idnumber) {
if (groups_get_group_by_idnumber($COURSE->id, $idnumber)) {
$errors['idnumber']= get_string('idnumbertaken');
}
}
if ($data['enrolmentkey'] != '') {
$errmsg = '';
if (!empty($CFG->groupenrolmentkeypolicy) && $group->enrolmentkey !== $data['enrolmentkey']
&& !check_password_policy($data['enrolmentkey'], $errmsg)) {
// Enforce password policy when the password is changed.
$errors['enrolmentkey'] = $errmsg;
} else {
// Prevent twice the same enrolment key in course groups.
$sql = "SELECT id FROM {groups} WHERE id <> :groupid AND courseid = :courseid AND enrolmentkey = :key";
$params = array('groupid' => $data['id'], 'courseid' => $COURSE->id, 'key' => $data['enrolmentkey']);
if ($DB->record_exists_sql($sql, $params)) {
$errors['enrolmentkey'] = get_string('enrolmentkeyalreadyinuse', 'group');
}
}
}
} else if (groups_get_group_by_name($COURSE->id, $name)) {
$errors['name'] = get_string('groupnameexists', 'group', $name);
} else if (!empty($idnumber) && groups_get_group_by_idnumber($COURSE->id, $idnumber)) {
$errors['idnumber']= get_string('idnumbertaken');
} else if ($data['enrolmentkey'] != '') {
$errmsg = '';
if (!empty($CFG->groupenrolmentkeypolicy) && !check_password_policy($data['enrolmentkey'], $errmsg)) {
// Enforce password policy.
$errors['enrolmentkey'] = $errmsg;
} else if ($DB->record_exists('groups', array('courseid' => $COURSE->id, 'enrolmentkey' => $data['enrolmentkey']))) {
// Prevent the same enrolment key from being used multiple times in course groups.
$errors['enrolmentkey'] = get_string('enrolmentkeyalreadyinuse', 'group');
}
}
return $errors;
}
/**
* Get editor options for this form
*
* @return array An array of options
*/
function get_editor_options() {
return $this->_customdata['editoroptions'];
}
}