File Source for exercise

<?php
/*
DOKEOS - elearning and course management software
For a full list of contributors, see documentation/credits.html
This program 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 2
of the License, or (at your option) any later version.
See "documentation/licence.html" more details.
Contact:
Dokeos
Rue des Palais 44 Paleizenstraat
B-1030 Brussels - Belgium
Tel. +32 (2) 211 34 56
*/
/**
* Exercise administration
* This script allows to manage an exercise. It is included from the script admin.php
* @package dokeos.exercise
* @author Olivier Brouckaert
* @version $Id$
*/
// name of the language file that needs to be included
$language_file='exercice';
include('exercise.class.php');
include('question.class.php');
include('answer.class.php');
include('../inc/global.inc.php');
include('exercise.lib.php');
$this_section=SECTION_COURSES;
if(!api_is_allowed_to_edit())
{
api_not_allowed(true);
}
/*********************
* INIT EXERCISE
*********************/
include_once(api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
$objExercise = new Exercise();
/*********************
* INIT FORM
*********************/
if(isset($_GET['exerciseId']))
{
$form = new FormValidator('exercise_admin', 'post', api_get_self().'?exerciseId='.$_GET['exerciseId']);
$objExercise -> read (intval($_GET['exerciseId']));
$form -> addElement ('hidden','edit','true');
}else
{
$form = new FormValidator('exercise_admin');
$form -> addElement ('hidden','edit','false');
}
$objExercise -> createForm ($form);
/*********************
* VALIDATE FORM
*********************/
if($form -> validate())
{
$objExercise -> processCreation($form);
if($form -> getSubmitValue('edit') == 'true')
{
header('Location:exercice.php?message=ExerciseEdited');
}
else
{
header('Location:admin.php?message=ExerciseStored&exerciseId='.$objExercise->id);
}
}
else
{
/*********************
* DISPLAY FORM
*********************/
$nameTools=get_lang('ExerciseManagement');
$interbreadcrumb[] = array ("url"=>"exercice.php", "name"=> get_lang('Exercices'));
Display::display_header($nameTools,"Exercise");
$form -> display ();
}
Display::display_footer();

Source for file exercise_admin.php