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478 lines
16 KiB
478 lines
16 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Exercise administration
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* This script allows to manage (create, modify) an exercise and its questions
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*
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* Following scripts are includes for a best code understanding :
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*
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* - exercise.class.php : for the creation of an Exercise object
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* - question.class.php : for the creation of a Question object
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* - answer.class.php : for the creation of an Answer object
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* - exercise.lib.php : functions used in the exercise tool
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* - exercise_admin.inc.php : management of the exercise
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* - question_admin.inc.php : management of a question (statement & answers)
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* - statement_admin.inc.php : management of a statement
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* - answer_admin.inc.php : management of answers
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* - question_list_admin.inc.php : management of the question list
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*
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* Main variables used in this script :
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*
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* - $is_allowedToEdit : set to 1 if the user is allowed to manage the exercise
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* - $objExercise : exercise object
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* - $objQuestion : question object
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* - $objAnswer : answer object
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* - $aType : array with answer types
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* - $exerciseId : the exercise ID
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* - $picturePath : the path of question pictures
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* - $newQuestion : ask to create a new question
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* - $modifyQuestion : ID of the question to modify
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* - $editQuestion : ID of the question to edit
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* - $submitQuestion : ask to save question modifications
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* - $cancelQuestion : ask to cancel question modifications
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* - $deleteQuestion : ID of the question to delete
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* - $moveUp : ID of the question to move up
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* - $moveDown : ID of the question to move down
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* - $modifyExercise : ID of the exercise to modify
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* - $submitExercise : ask to save exercise modifications
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* - $cancelExercise : ask to cancel exercise modifications
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* - $modifyAnswers : ID of the question which we want to modify answers for
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* - $cancelAnswers : ask to cancel answer modifications
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* - $buttonBack : ask to go back to the previous page in answers of type "Fill in blanks"
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*
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* @package chamilo.exercise
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* @author Olivier Brouckaert
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*/
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require_once 'exercise.class.php';
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require_once 'question.class.php';
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require_once 'answer.class.php';
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// Name of the language file that needs to be included
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$language_file='exercice';
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require_once '../inc/global.inc.php';
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require_once 'exercise.lib.php';
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$this_section=SECTION_COURSES;
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$is_allowedToEdit=api_is_allowed_to_edit(null,true);
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if (!$is_allowedToEdit) {
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api_not_allowed(true);
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}
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// Allows script inclusions
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define(ALLOWED_TO_INCLUDE,1);
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require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
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require_once api_get_path(LIBRARY_PATH).'document.lib.php';
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/* stripslashes POST data */
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if($_SERVER['REQUEST_METHOD'] == 'POST') {
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foreach($_POST as $key=>$val) {
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if(is_string($val)) {
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$_POST[$key]=stripslashes($val);
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} elseif(is_array($val)) {
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foreach($val as $key2=>$val2) {
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$_POST[$key][$key2]=stripslashes($val2);
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}
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}
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$GLOBALS[$key]=$_POST[$key];
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}
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}
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// get vars from GET
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if ( empty ( $exerciseId ) ) {
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$exerciseId = intval($_GET['exerciseId']);
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}
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if ( empty ( $newQuestion ) ) {
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$newQuestion = $_GET['newQuestion'];
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}
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if ( empty ( $modifyAnswers ) ) {
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$modifyAnswers = $_GET['modifyAnswers'];
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}
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if ( empty ( $editQuestion ) ) {
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$editQuestion = $_GET['editQuestion'];
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}
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if ( empty ( $modifyQuestion ) ) {
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$modifyQuestion = $_GET['modifyQuestion'];
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}
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if ( empty ( $deleteQuestion ) ) {
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$deleteQuestion = $_GET['deleteQuestion'];
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}
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if ( empty ( $questionId ) ) {
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$questionId = $_SESSION['questionId'];
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}
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if ( empty ( $modifyExercise ) ) {
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$modifyExercise = $_GET['modifyExercise'];
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}
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//Cleaning all incomplete attempts of the admin/teacher to avoid weird problems when changing the exercise settings, number of questions, etc
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delete_all_incomplete_attempts(api_get_user_id(), $exerciseId, api_get_course_id(), api_get_session_id());
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// get from session
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$objExercise = $_SESSION['objExercise'];
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$objQuestion = $_SESSION['objQuestion'];
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$objAnswer = $_SESSION['objAnswer'];
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// document path
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$documentPath=api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
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// picture path
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$picturePath=$documentPath.'/images';
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// audio path
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$audioPath=$documentPath.'/audio';
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// the 5 types of answers
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$aType=array(get_lang('UniqueSelect'),get_lang('MultipleSelect'),get_lang('FillBlanks'),get_lang('Matching'),get_lang('FreeAnswer'));
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// tables used in the exercise tool
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$TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
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$TBL_EXERCICES = Database::get_course_table(TABLE_QUIZ_TEST);
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$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
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$TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER);
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$TBL_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
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if($_GET['action'] == 'exportqti2' && !empty($_GET['questionId'])) {
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require_once('export/qti2/qti2_export.php');
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$export = export_question((int)$_GET['questionId'],true);
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$qid = (int)$_GET['questionId'];
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require_once(api_get_path(LIBRARY_PATH).'pclzip/pclzip.lib.php');
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$archive_path = api_get_path(SYS_ARCHIVE_PATH);
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$temp_dir_short = uniqid();
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$temp_zip_dir = $archive_path."/".$temp_dir_short;
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if(!is_dir($temp_zip_dir)) mkdir($temp_zip_dir, api_get_permissions_for_new_directories());
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$temp_zip_file = $temp_zip_dir."/".md5(time()).".zip";
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$temp_xml_file = $temp_zip_dir."/qti2export_".$qid.'.xml';
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file_put_contents($temp_xml_file,$export);
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$zip_folder=new PclZip($temp_zip_file);
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$zip_folder->add($temp_xml_file, PCLZIP_OPT_REMOVE_ALL_PATH);
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$name = 'qti2_export_'.$qid.'.zip';
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DocumentManager::file_send_for_download($temp_zip_file,true,$name);
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unlink($temp_zip_file);
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unlink($temp_xml_file);
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rmdir($temp_zip_dir);
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//DocumentManager::string_send_for_download($export,true,'qti2export_q'.$_GET['questionId'].'.xml');
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exit(); //otherwise following clicks may become buggy
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}
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// intializes the Exercise object
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if(!is_object($objExercise)) {
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// construction of the Exercise object
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$objExercise=new Exercise();
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// creation of a new exercise if wrong or not specified exercise ID
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if($exerciseId) {
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$objExercise->read($exerciseId);
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}
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// saves the object into the session
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api_session_register('objExercise');
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}
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// doesn't select the exercise ID if we come from the question pool
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if(!$fromExercise) {
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// gets the right exercise ID, and if 0 creates a new exercise
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if(!$exerciseId=$objExercise->selectId()) {
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$modifyExercise='yes';
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}
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}
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$nbrQuestions=$objExercise->selectNbrQuestions();
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// intializes the Question object
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if($editQuestion || $newQuestion || $modifyQuestion || $modifyAnswers) {
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if($editQuestion || $newQuestion) {
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// reads question data
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if($editQuestion) {
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// question not found
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if(!$objQuestion = Question::read($editQuestion)) {
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die(get_lang('QuestionNotFound'));
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}
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// saves the object into the session
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api_session_register('objQuestion');
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}
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}
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// checks if the object exists
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if(is_object($objQuestion)) {
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// gets the question ID
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$questionId=$objQuestion->selectId();
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}
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}
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// if cancelling an exercise
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if($cancelExercise) {
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// existing exercise
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if($exerciseId) {
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unset($modifyExercise);
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} else {
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// new exercise
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// goes back to the exercise list
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header('Location: exercice.php');
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exit();
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}
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}
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// if cancelling question creation/modification
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if ($cancelQuestion) {
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// if we are creating a new question from the question pool
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if(!$exerciseId && !$questionId) {
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// goes back to the question pool
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header('Location: question_pool.php');
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exit();
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} else {
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// goes back to the question viewing
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$editQuestion=$modifyQuestion;
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unset($newQuestion,$modifyQuestion);
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}
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}
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// if cancelling answer creation/modification
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if($cancelAnswers) {
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// goes back to the question viewing
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$editQuestion=$modifyAnswers;
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unset($modifyAnswers);
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}
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// modifies the query string that is used in the link of tool name
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if($editQuestion || $modifyQuestion || $newQuestion || $modifyAnswers) {
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$nameTools=get_lang('QuestionManagement');
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}
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if (isset($_SESSION['gradebook'])){
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$gradebook= $_SESSION['gradebook'];
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}
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if (!empty($gradebook) && $gradebook=='view') {
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$interbreadcrumb[]= array (
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'url' => '../gradebook/'.$_SESSION['gradebook_dest'],
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'name' => get_lang('ToolGradebook')
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);
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}
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$interbreadcrumb[]=array("url" => "exercice.php","name" => get_lang('Exercices'));
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$interbreadcrumb[]=array("url" => "admin.php?exerciseId=".$objExercise->id,"name" => $objExercise->exercise);
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// shows a link to go back to the question pool
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if(!$exerciseId && $nameTools != get_lang('ExerciseManagement')){
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$interbreadcrumb[]=array("url" => "question_pool.php?fromExercise=$fromExercise","name" => get_lang('QuestionPool'));
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}
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// if the question is duplicated, disable the link of tool name
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if($modifyIn == 'thisExercise') {
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if($buttonBack) {
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$modifyIn='allExercises';
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} else {
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$noPHP_SELF=true;
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}
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}
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$htmlHeadXtra[] = api_get_jquery_ui_js();
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$htmlHeadXtra[] = '<script type="text/javascript">
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function multiple_answer_true_false_onchange(variable) {
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var result = variable.checked;
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var id = variable.id;
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var weight_id = "weighting_" + id;
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var array_result=new Array(); array_result[1]="1"; array_result[0]= "-0.50"; array_result[-1]= "0";
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if (result) {
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result = 1;
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} else {
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result = 0;
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}
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document.getElementById(weight_id).value = array_result[result];
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}
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</script>';
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$htmlHeadXtra[] = "<script type=\"text/javascript\" src=\"../plugin/hotspot/JavaScriptFlashGateway.js\"></script>
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<script src=\"../plugin/hotspot/hotspot.js\" type=\"text/javascript\"></script>
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<script language=\"JavaScript\" type=\"text/javascript\">
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<!--
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// -----------------------------------------------------------------------------
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// Globals
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// Major version of Flash required
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var requiredMajorVersion = 7;
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// Minor version of Flash required
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var requiredMinorVersion = 0;
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// Minor version of Flash required
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var requiredRevision = 0;
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// the version of javascript supported
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var jsVersion = 1.0;
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// -----------------------------------------------------------------------------
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// -->
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</script>
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<script language=\"VBScript\" type=\"text/vbscript\">
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<!-- // Visual basic helper required to detect Flash Player ActiveX control version information
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Function VBGetSwfVer(i)
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on error resume next
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Dim swControl, swVersion
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swVersion = 0
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set swControl = CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" + CStr(i))
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if (IsObject(swControl)) then
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swVersion = swControl.GetVariable(\"\$version\")
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end if
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VBGetSwfVer = swVersion
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End Function
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// -->
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</script>
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<script language=\"JavaScript1.1\" type=\"text/javascript\">
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<!-- // Detect Client Browser type
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var isIE = (navigator.appVersion.indexOf(\"MSIE\") != -1) ? true : false;
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var isWin = (navigator.appVersion.toLowerCase().indexOf(\"win\") != -1) ? true : false;
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var isOpera = (navigator.userAgent.indexOf(\"Opera\") != -1) ? true : false;
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jsVersion = 1.1;
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// JavaScript helper required to detect Flash Player PlugIn version information
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function JSGetSwfVer(i){
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// NS/Opera version >= 3 check for Flash plugin in plugin array
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if (navigator.plugins != null && navigator.plugins.length > 0) {
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if (navigator.plugins[\"Shockwave Flash 2.0\"] || navigator.plugins[\"Shockwave Flash\"]) {
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var swVer2 = navigator.plugins[\"Shockwave Flash 2.0\"] ? \" 2.0\" : \"\";
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var flashDescription = navigator.plugins[\"Shockwave Flash\" + swVer2].description;
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descArray = flashDescription.split(\" \");
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tempArrayMajor = descArray[2].split(\".\");
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versionMajor = tempArrayMajor[0];
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versionMinor = tempArrayMajor[1];
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if ( descArray[3] != \"\" ) {
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tempArrayMinor = descArray[3].split(\"r\");
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} else {
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tempArrayMinor = descArray[4].split(\"r\");
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}
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versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
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flashVer = versionMajor + \".\" + versionMinor + \".\" + versionRevision;
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} else {
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flashVer = -1;
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}
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}
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// MSN/WebTV 2.6 supports Flash 4
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else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.6\") != -1) flashVer = 4;
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// WebTV 2.5 supports Flash 3
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else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.5\") != -1) flashVer = 3;
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// older WebTV supports Flash 2
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else if (navigator.userAgent.toLowerCase().indexOf(\"webtv\") != -1) flashVer = 2;
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// Can't detect in all other cases
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else {
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flashVer = -1;
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}
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return flashVer;
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}
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// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
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function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
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{
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reqVer = parseFloat(reqMajorVer + \".\" + reqRevision);
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// loop backwards through the versions until we find the newest version
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for (i=25;i>0;i--) {
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if (isIE && isWin && !isOpera) {
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versionStr = VBGetSwfVer(i);
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} else {
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versionStr = JSGetSwfVer(i);
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}
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if (versionStr == -1 ) {
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return false;
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} else if (versionStr != 0) {
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if(isIE && isWin && !isOpera) {
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tempArray = versionStr.split(\" \");
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tempString = tempArray[1];
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versionArray = tempString .split(\",\");
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} else {
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versionArray = versionStr.split(\".\");
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}
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versionMajor = versionArray[0];
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versionMinor = versionArray[1];
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versionRevision = versionArray[2];
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versionString = versionMajor + \".\" + versionRevision; // 7.0r24 == 7.24
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versionNum = parseFloat(versionString);
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// is the major.revision >= requested major.revision AND the minor version >= requested minor
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if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
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return true;
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} else {
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return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );
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}
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}
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}
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}
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// -->
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</script>";
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Display::display_header($nameTools,'Exercise');
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$show_quiz_edition = true;
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if (isset($exerciseId) && !empty($exerciseId)) {
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$TBL_LP_ITEM = Database::get_course_table(TABLE_LP_ITEM);
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$sql="SELECT max_score FROM $TBL_LP_ITEM
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WHERE item_type = '".TOOL_QUIZ."' AND path ='".Database::escape_string($exerciseId)."'";
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$result = Database::query($sql);
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if (Database::num_rows($result) > 0) {
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Display::display_warning_message(get_lang('EditingExerciseCauseProblemsInLP'));
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$show_quiz_edition = false;
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}
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}
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echo '<div class="actions">';
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if (isset($_GET['hotspotadmin']) || isset($_GET['newQuestion']) || isset($_GET['myid']))
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echo '<a href="admin.php?exerciseId='.$exerciseId.'">'.Display::return_icon('back.png', get_lang('GoBackToQuestionList'),'','32').'</a>';
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if (!isset($_GET['hotspotadmin']) && !isset($_GET['newQuestion']) && !isset($_GET['myid']) && !isset($_GET['editQuestion'])) {
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echo '<a href="exercice.php?'.api_get_cidReq().'">'.Display::return_icon('back.png', get_lang('BackToExercisesList'),'','32').'</a>';
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}
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echo '<a href="exercice_submit.php?'.api_get_cidreq().'&exerciseId='.$objExercise->id.'">'.Display::return_icon('preview_view.png', get_lang('Preview'),'','32').'</a>';
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if ($show_quiz_edition) {
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echo '<a href="exercise_admin.php?'.api_get_cidreq().'&modifyExercise=yes&exerciseId='.$objExercise->id.'">'.Display::return_icon('settings.png', get_lang('ModifyExercise'),'','32').'</a>';
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} else {
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echo '<a href="">'.Display::return_icon('settings_na.png', get_lang('ModifyExercise'),'','32').'</a>';
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}
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echo '</div>';
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if(isset($_GET['message'])) {
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if (in_array($_GET['message'], array('ExerciseStored'))) {
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Display::display_confirmation_message(get_lang($_GET['message']));
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}
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}
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/*
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$description = $objExercise->selectDescription();
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echo '<div class="sectiontitle">'.$objExercise->selectTitle().'</div>';
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if(!empty($description))
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{
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echo '<div class="sectioncomment">'.stripslashes($description).'</div>';
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}
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*/
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if ($newQuestion || $editQuestion) {
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// statement management
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$type = $_REQUEST['answerType'];
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?><input type="hidden" name="Type" value="<?php echo $type; ?>" />
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<?php
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require 'question_admin.inc.php';
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}
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if (isset($_GET['hotspotadmin'])) {
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require 'hotspot_admin.inc.php';
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}
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if(!$newQuestion && !$modifyQuestion && !$editQuestion && !isset($_GET['hotspotadmin'])) {
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// question list management
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require 'question_list_admin.inc.php';
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}
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api_session_register('objExercise');
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api_session_register('objQuestion');
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api_session_register('objAnswer');
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Display::display_footer();
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