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mod_form.php
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mod_form.php
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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/>.
/**
* URL configuration form
*
* @package mod_url
* @copyright 2009 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die;
require_once ($CFG->dirroot.'/course/moodleform_mod.php');
require_once($CFG->dirroot.'/mod/url/locallib.php');
class mod_url_mod_form extends moodleform_mod {
function definition() {
global $CFG, $DB;
$mform = $this->_form;
$config = get_config('url');
//-------------------------------------------------------
$mform->addElement('header', 'general', get_string('general', 'form'));
$mform->addElement('text', 'name', get_string('name'), array('size'=>'48'));
if (!empty($CFG->formatstringstriptags)) {
$mform->setType('name', PARAM_TEXT);
} else {
$mform->setType('name', PARAM_CLEANHTML);
}
$mform->addRule('name', null, 'required', null, 'client');
$mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
$mform->addElement('url', 'externalurl', get_string('externalurl', 'url'), array('size'=>'60'), array('usefilepicker'=>true));
$mform->setType('externalurl', PARAM_RAW_TRIMMED);
$mform->addRule('externalurl', null, 'required', null, 'client');
$this->standard_intro_elements();
$element = $mform->getElement('introeditor');
$attributes = $element->getAttributes();
$attributes['rows'] = 5;
$element->setAttributes($attributes);
//-------------------------------------------------------
$mform->addElement('header', 'optionssection', get_string('appearance'));
if ($this->current->instance) {
$options = resourcelib_get_displayoptions(explode(',', $config->displayoptions), $this->current->display);
} else {
$options = resourcelib_get_displayoptions(explode(',', $config->displayoptions));
}
if (count($options) == 1) {
$mform->addElement('hidden', 'display');
$mform->setType('display', PARAM_INT);
reset($options);
$mform->setDefault('display', key($options));
} else {
$mform->addElement('select', 'display', get_string('displayselect', 'url'), $options);
$mform->setDefault('display', $config->display);
$mform->addHelpButton('display', 'displayselect', 'url');
}
if (array_key_exists(RESOURCELIB_DISPLAY_POPUP, $options)) {
$mform->addElement('text', 'popupwidth', get_string('popupwidth', 'url'), array('size'=>3));
if (count($options) > 1) {
$mform->disabledIf('popupwidth', 'display', 'noteq', RESOURCELIB_DISPLAY_POPUP);
}
$mform->setType('popupwidth', PARAM_INT);
$mform->setDefault('popupwidth', $config->popupwidth);
$mform->addElement('text', 'popupheight', get_string('popupheight', 'url'), array('size'=>3));
if (count($options) > 1) {
$mform->disabledIf('popupheight', 'display', 'noteq', RESOURCELIB_DISPLAY_POPUP);
}
$mform->setType('popupheight', PARAM_INT);
$mform->setDefault('popupheight', $config->popupheight);
}
if (array_key_exists(RESOURCELIB_DISPLAY_AUTO, $options) or
array_key_exists(RESOURCELIB_DISPLAY_EMBED, $options) or
array_key_exists(RESOURCELIB_DISPLAY_FRAME, $options)) {
$mform->addElement('checkbox', 'printintro', get_string('printintro', 'url'));
$mform->disabledIf('printintro', 'display', 'eq', RESOURCELIB_DISPLAY_POPUP);
$mform->disabledIf('printintro', 'display', 'eq', RESOURCELIB_DISPLAY_OPEN);
$mform->disabledIf('printintro', 'display', 'eq', RESOURCELIB_DISPLAY_NEW);
$mform->setDefault('printintro', $config->printintro);
}
//-------------------------------------------------------
$mform->addElement('header', 'parameterssection', get_string('parametersheader', 'url'));
$mform->addElement('static', 'parametersinfo', '', get_string('parametersheader_help', 'url'));
if (empty($this->current->parameters)) {
$parcount = 5;
} else {
$parcount = 5 + count(unserialize($this->current->parameters));
$parcount = ($parcount > 100) ? 100 : $parcount;
}
$options = url_get_variable_options($config);
for ($i=0; $i < $parcount; $i++) {
$parameter = "parameter_$i";
$variable = "variable_$i";
$pargroup = "pargoup_$i";
$group = array(
$mform->createElement('text', $parameter, '', array('size'=>'12')),
$mform->createElement('selectgroups', $variable, '', $options),
);
$mform->addGroup($group, $pargroup, get_string('parameterinfo', 'url'), ' ', false);
$mform->setType($parameter, PARAM_RAW);
}
//-------------------------------------------------------
$this->standard_coursemodule_elements();
//-------------------------------------------------------
$this->add_action_buttons();
}
function data_preprocessing(&$default_values) {
if (!empty($default_values['displayoptions'])) {
$displayoptions = unserialize($default_values['displayoptions']);
if (isset($displayoptions['printintro'])) {
$default_values['printintro'] = $displayoptions['printintro'];
}
if (!empty($displayoptions['popupwidth'])) {
$default_values['popupwidth'] = $displayoptions['popupwidth'];
}
if (!empty($displayoptions['popupheight'])) {
$default_values['popupheight'] = $displayoptions['popupheight'];
}
}
if (!empty($default_values['parameters'])) {
$parameters = unserialize($default_values['parameters']);
$i = 0;
foreach ($parameters as $parameter=>$variable) {
$default_values['parameter_'.$i] = $parameter;
$default_values['variable_'.$i] = $variable;
$i++;
}
}
}
function validation($data, $files) {
$errors = parent::validation($data, $files);
// Validating Entered url, we are looking for obvious problems only,
// teachers are responsible for testing if it actually works.
// This is not a security validation!! Teachers are allowed to enter "javascript:alert(666)" for example.
// NOTE: do not try to explain the difference between URL and URI, people would be only confused...
if (!empty($data['externalurl'])) {
$url = $data['externalurl'];
if (preg_match('|^/|', $url)) {
// links relative to server root are ok - no validation necessary
} else if (preg_match('|^[a-z]+://|i', $url) or preg_match('|^https?:|i', $url) or preg_match('|^ftp:|i', $url)) {
// normal URL
if (!url_appears_valid_url($url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
} else if (preg_match('|^[a-z]+:|i', $url)) {
// general URI such as teamspeak, mailto, etc. - it may or may not work in all browsers,
// we do not validate these at all, sorry
} else {
// invalid URI, we try to fix it by adding 'http://' prefix,
// relative links are NOT allowed because we display the link on different pages!
if (!url_appears_valid_url('http://'.$url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
}
}
return $errors;
}
}