moodle/mod/survey/mod_form.php

<?php
if (!defined('MOODLE_INTERNAL')) {
    die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
}

require_once ($CFG->dirroot.'/course/moodleform_mod.php');

class mod_survey_mod_form extends moodleform_mod {

    function definition() {
        global $CFG, $DB;

        $mform =& $this->_form;

        $strrequired = get_string('required');

//-------------------------------------------------------------------------------
        $mform->addElement('header', 'general', get_string('general', 'form'));

        $mform->addElement('text', 'name', get_string('name'), array('size'=>'64'));
        if (!empty($CFG->formatstringstriptags)) {
            $mform->setType('name', PARAM_TEXT);
        } else {
            $mform->setType('name', PARAM_CLEANHTML);
        }
        $mform->addRule('name', null, 'required', null, 'client');

        if (!$options = $DB->get_records_menu("survey", array("template"=>0), "name", "id, name")) {
            print_error('cannotfindsurveytmpt', 'survey');
        }

        foreach ($options as $id => $name) {
            $options[$id] = get_string($name, "survey");
        }
        $options = array(''=>get_string('choose').'...') + $options;
        $mform->addElement('select', 'template', get_string("surveytype", "survey"), $options);
        $mform->addRule('template', $strrequired, 'required', null, 'client');
        $mform->addHelpButton('template', 'surveytype', 'survey');

        $this->add_intro_editor(false, get_string('customintro', 'survey'));

        $this->standard_coursemodule_elements();

//-------------------------------------------------------------------------------
        // buttons
        $this->add_action_buttons();
    }


}