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[svn r19665] First attempted to improve the error handling in the scorm_api.php based in the "SCORM Run-Time Environment" document see FS#3994

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skala
Julio Montoya 17 years ago
parent 8fc35de5cf
commit 5ed638905f
1 changed files with 227 additions and 121 deletions
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  1. 242
      main/newscorm/scorm_api.php

242
main/newscorm/scorm_api.php
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@ -1,9 +1,9 @@
<?php // $Id: scorm_api.php 19654 2009-04-08 18:37:16Z cfasanando $
<?php // $Id: scorm_api.php 19665 2009-04-08 23:21:32Z juliomontoya $
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
Copyright (c) 2004-2009 Dokeos SPRL
Copyright (c) Denes Nagy (darkden@freemail.hu)
For a full list of contributors, see "credits.txt".
@ -107,9 +107,10 @@ API_1484_11 = new APIobject(); //for scorm 1.3
api_1484_11 = API_1484_11;
//api_1484_11 = new APIobject(); //for scorm 1.3
// Error codes
var G_NoError = 0;
var G_GeneralException = 101;
var G_ServerBusy = 102;
var G_ServerBusy = 102; // this is not in the Scorm1.2_Runtime document
var G_InvalidArgumentError = 201;
var G_ElementCannotHaveChildren = 202;
var G_ElementIsNotAnArray = 203;
@ -120,6 +121,20 @@ var G_ElementIsReadOnly = 403;
var G_ElementIsWriteOnly = 404;
var G_IncorrectDataType = 405;
// Error messages
var G_NoErrorMessage = '';
var G_GeneralExceptionMessage = 'General Exception';
var G_ServerBusyMessage = 'Server busy'; // this is not in the Scorm1.2_Runtime document
var G_InvalidArgumentErrorMessage = 'Invalid argument error';
var G_ElementCannotHaveChildrenMessage = 'Element cannot have children';
var G_ElementIsNotAnArrayMessage = 'Element not an array. Cannot have count';
var G_NotInitializedMessage = 'Not initialized';
var G_NotImplementedErrorMessage = 'Not implemented error';
var G_InvalidSetValueMessage = 'Invalid set value, element is a keyword';
var G_ElementIsReadOnlyMessage = 'Element is read only';
var G_ElementIsWriteOnlyMessage = 'Element is write only';
var G_IncorrectDataTypeMessage = 'Incorrect Data Type';
var G_LastError = G_NoError ;
var G_LastErrorMessage = 'No error';
//this is not necessary and is only provided to make bad Articulate contents shut up (and not trigger useless JS messages)
@ -179,7 +194,6 @@ var lms_old_item_id = 0;
* Function called mandatorily by the SCORM content to start the SCORM communication
*/
function LMSInitialize() { //this is the initialize function of all APIobjects
logit_scorm('LMSInitialise()',0);
/* load info for this new item by calling the js_api_refresh command in
* the message frame. The message frame will update the JS variables by
@ -189,77 +203,112 @@ function LMSInitialize() { //this is the initialize function of all APIobjects
*/
G_LastError = G_NoError ;
G_LastErrorMessage = 'No error';
lms_initialized=0;
// if there are more parameters than ""
if (arguments.length>1) {
G_LastError = G_InvalidArgumentError;
G_LastErrorMessage = G_InvalidArgumentErrorMessage;
logit_scorm('Error '+ G_InvalidArgumentError + G_InvalidArgumentErrorMessage, 0);
return('false');
} else {
logit_scorm('LMSInitialise()',0);
lms_initialized=1;
return('true');
}
}
function Initialize() { //this is the initialize function of all APIobjects
function Initialize()
{ //this is the initialize function of all APIobjects
return LMSInitialize();
}
function LMSGetValue(param) {
function LMSGetValue(param)
{
//logit_scorm("LMSGetValue('"+param+"')",1);
G_LastError = G_NoError ;
G_LastErrorMessage = 'No error';
var result='';
// the LMSInitialize is missing
if (lms_initialized == 0) {
G_LastError = G_NotInitialized;
G_LastErrorMessage = G_NotInitializedMessage;
logit_scorm('Error '+ G_NotInitialized + ' ' +G_NotInitializedMessage, 0);
return '';
}
//Dokeos does not support this SCO object properties
if (param == 'cmi.student_preference.text' ||
param == 'cmi.student_preference.language' ||
param == 'cmi.student_preference.speed' ||
param == 'cmi.student_preference.audio' ||
param == 'cmi.student_preference._children' ||
param == 'cmi.student_data.time_limit_action' ||
param == 'cmi.comments' ||
param == 'cmi.comments_from_lms' ) {
// the value is not supported
G_lastError = G_NotImplementedError ;
G_lastErrorString = G_NotImplementedErrorMessage;
logit_scorm("LMSGetValue ('"+param+"') Error '"+G_NotImplementedErrorMessage+"'",1);
result = '';
return result;
}
// ---- cmi.core._children
if(param=='cmi.core._children' || param=='cmi.core_children'){
if(param=='cmi.core._children' || param=='cmi.core_children') {
result='entry, exit, lesson_status, student_id, student_name, lesson_location, total_time, credit, lesson_mode, score, session_time';
}else if(param == 'cmi.core.entry'){
} else if(param == 'cmi.core.entry'){
// ---- cmi.core.entry
if(lms_item_core_exit=='none')
{
if(lms_item_core_exit=='none') {
result='ab-initio';
}
else if(lms_item_core_exit=='suspend')
{
} else if(lms_item_core_exit=='suspend') {
result='resume';
}
else
{
} else {
result='';
}
}else if(param == 'cmi.core.exit'){
} else if(param == 'cmi.core.exit'){
// ---- cmi.core.exit
result='';
G_LastError = G_ElementIsWriteOnly;
}else if(param == 'cmi.core.session_time'){
result='';
G_LastError = G_ElementIsWriteOnly;
}else if(param == 'cmi.core.lesson_status'){
// ---- cmi.core.lesson_status
if(lesson_status != '') {
result=lesson_status;
}
else{
} else {
result='not attempted';
}
}else if(param == 'cmi.core.student_id'){
} else if(param == 'cmi.core.student_id'){
// ---- cmi.core.student_id
result='<?php echo $_user['user_id']; ?>';
}else if(param == 'cmi.core.student_name'){
} else if(param == 'cmi.core.student_name'){
// ---- cmi.core.student_name
<?php
$who=addslashes($_user['lastName'].", ".$_user['firstName']);
echo "result='$who';";
?>
}else if(param == 'cmi.core.lesson_location'){
} else if(param == 'cmi.core.lesson_location'){
// ---- cmi.core.lesson_location
result=lesson_location;
}else if(param == 'cmi.core.total_time'){
} else if(param == 'cmi.core.total_time'){
// ---- cmi.core.total_time
result=total_time;
}else if(param == 'cmi.core.score._children'){
} else if(param == 'cmi.core.score._children'){
// ---- cmi.core.score._children
result='raw,min,max';
}else if(param == 'cmi.core.score.raw'){
} else if(param == 'cmi.core.score.raw'){
// ---- cmi.core.score.raw
result=score;
}else if(param == 'cmi.core.score.max'){
} else if(param == 'cmi.core.score.max'){
// ---- cmi.core.score.max
result=max;
}else if(param == 'cmi.core.score.min'){
} else if(param == 'cmi.core.score.min'){
// ---- cmi.core.score.min
result=min;
}else if(param == 'cmi.core.score'){
} else if(param == 'cmi.core.score'){
// ---- cmi.core.score -- non-standard item, provided as cmi.core.score.raw just in case
result=score;
}else if(param == 'cmi.core.credit'){
@ -384,11 +433,14 @@ function LMSGetValue(param) {
}else if(param == 'cmi.interactions._children'){
// ---- cmi.interactions._children
result = 'id,time,type,correct_responses,weighting,student_response,result,latency';
}else{
} else {
// ---- anything else
// Invalid argument error
G_lastError = G_InvalidArgumentError ;
G_lastErrorString = G_InvalidArgumentErrorMessage;
logit_scorm("LMSGetValue ('"+param+"') Error '"+G_InvalidArgumentErrorMessage+"'",1);
result = '';
G_lastError = G_NotImplementedError;
G_lastErrorString = 'Not implemented yet';
return result;
}
logit_scorm("LMSGetValue\n\t('"+param+"') returned '"+result+"'",1);
return result;
@ -399,56 +451,77 @@ function GetValue(param) {
}
function LMSSetValue(param, val) {
logit_scorm("LMSSetValue\n\t('"+param+"','"+val+"')",0);
commit = true; //value has changed, need to re-commit
G_LastError = G_NoError ;
G_LastErrorMessage = 'No error';
return_value = 'false';
if( param == "cmi.core.score.raw" )
{
score= val; return_value='true';
if( param == "cmi.core.score.raw" ) {
score= val;
return_value='true';
} else if ( param == "cmi.core.score.max" ) {
max = val;return_value='true';
max = val;
return_value='true';
} else if ( param == "cmi.core.score.min" ) {
min = val;return_value='true';
min = val;
return_value='true';
} else if ( param == "cmi.core.lesson_location" ) {
lesson_location = val;return_value='true';
lesson_location = val;
return_value='true';
} else if ( param == "cmi.core.lesson_status" ) {
saved_lesson_status = lesson_status;
lesson_status = val;
return_value='true';
} else if ( param == "cmi.completion_status" ) {
lesson_status = val;return_value='true'; //1.3
lesson_status = val;
return_value='true'; //1.3
} else if ( param == "cmi.core.session_time" ) {
session_time = val;return_value='true';
session_time = val;
return_value='true';
} else if ( param == "cmi.score.scaled") { //1.3
if(val<=1 && val>=-1)
{
if(val<=1 && val>=-1) {
score = val ;
return_value='true';
}
else
{
} else {
return_value='false';
}
} else if ( param == "cmi.success_status" ) {
success_status = val;return_value='true'; //1.3
success_status = val;
return_value='true'; //1.3
} else if ( param == "cmi.suspend_data" ) {
suspend_data = val;return_value='true';
suspend_data = val;
return_value='true';
} else if ( param == "cmi.core.exit" ) {
lms_item_core_exit = val;return_value='true';
lms_item_core_exit = val;
return_value='true';
} else if ( param == "cmi.core.student_id" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.core.student_name" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.core.credit" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.core.entry" ) {
G_LastError = G_ElementIsReadOnly
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.core.total_time" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.core.lesson_mode" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.comments_from_lms" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.student_data.time_limit_action" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.student_data.mastery_score" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.student_data.max_time_allowed" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.student_preference._children" ) {
G_LastError = G_ElementIsReadOnly;
} else if ( param == "cmi.launch_data" ) {
G_LastError = G_ElementIsReadOnly;
} else {
var myres = new Array();
if(myres = param.match(/cmi.interactions.(\d+).(id|time|type|correct_responses|weighting|student_response|result|latency)(.*)/))
{
if(myres = param.match(/cmi.interactions.(\d+).(id|time|type|correct_responses|weighting|student_response|result|latency)(.*)/)) {
elem_id = myres[1];
if(elem_id > interactions.length) //interactions setting should start at 0
{
@ -459,8 +532,7 @@ function LMSSetValue(param, val) {
*/
interactions[0] = ['0','','','','','','',''];
}
if(interactions[elem_id] == null){
if(interactions[elem_id] == null) {
interactions[elem_id] = ['','','','','','','',''];
//id(0), type(1), time(2), weighting(3),correct_responses(4),student_response(5),result(6),latency(7)
interactions[elem_id][4] = new Array();
@ -512,7 +584,7 @@ function LMSSetValue(param, val) {
G_lastError = G_NotImplementedError;
G_lastErrorString = 'Not implemented yet';
}
}else if(param.substring(0,15)== 'cmi.objectives.'){
} else if(param.substring(0,15)== 'cmi.objectives.'){
var myres = '';
if(myres = param.match(/cmi.objectives.(\d+).(id|score|status)(.*)/))
{
@ -574,9 +646,9 @@ function LMSSetValue(param, val) {
}
}
}
}else{
} else {
G_lastError = G_NotImplementedError;
G_lastErrorString = 'Not implemented yet';
G_lastErrorString = G_NotImplementedErrorMessage;
}
}
<?php
@ -591,19 +663,39 @@ function SetValue(param, val) {
return LMSSetValue(param, val);
}
function savedata(origin) { //origin can be 'commit', 'finish' or 'terminate'
if ((lesson_status != 'completed') && (lesson_status != 'passed')
&& (mastery_score >=0) && (score >= mastery_score))
{
function savedata(origin)
{
//origin can be 'commit', 'finish' or 'terminate'
if ((lesson_status != 'completed') && (lesson_status != 'passed') && (mastery_score >=0) && (score >= mastery_score)) {
lesson_status = 'passed';
}
else if( (mastery_score < 0) && (lms_lp_type != '2') && ( lesson_status == 'incomplete') && (score >= (0.8*max) ) )
{ //the status cannot be modified automatically by the LMS under SCORM 1.2's rules
} else if( (mastery_score < 0) && (lms_lp_type != '2') && ( lesson_status == 'incomplete') && (score >= (0.8*max) ) ) {
//the status cannot be modified automatically by the LMS under SCORM 1.2's rules
<?php if ($autocomplete_when_80pct){ ?>
lesson_status = 'completed';
<?php }?>
;
} else {
if (origin== 'finish') {
/*
The SCORM1.2 Runtime object document says for the "cmi.core.lesson_status" variable:
Upon receiving the LMSFinish() call or the user navigates away,
the LMS should set the cmi.core.lesson_status for the SCO to 'completed'
*/
/*
if (mastery_score!= '' && score != '') {
if (score >= mastery_score) {
lesson_status = 'passed';
} else {
lesson_status = 'failed';
}
} else if (mastery_score!= '') {
lesson_status = 'completed';
}
*/
}
}
logit_lms('saving data (status='+lesson_status+' - interactions: '+ interactions.length +')',1);
xajax_save_item(lms_lp_id, lms_user_id, lms_view_id, lms_item_id, score, max, min, lesson_status, session_time, suspend_data, lesson_location, interactions, lms_item_core_exit);
if(item_objectives.length>0)
@ -628,6 +720,7 @@ function Commit(val) {
function LMSFinish(val) {
G_LastError = G_NoError ;
G_LastErrorMessage = 'No error';
// why commit==false?
if (( commit == false )) {
logit_scorm('LMSFinish() (no LMSCommit())',1);
}
@ -670,13 +763,21 @@ function GetDiagnostic(errCode){
return LMSGetDiagnostic(errCode);
}
function Terminate(){
function Terminate()
{
if (lms_initialized == 0) {
G_LastError = G_NotInitialized;
G_LastErrorMessage = G_NotInitializedMessage;
logit_scorm('Error '+ G_NotInitialized + G_NotInitializedMessage, 0);
return('false');
} else {
logit_scorm('Terminate()',0);
G_LastError = G_NoError ;
G_LastErrorMessage = 'No error';
commit = true;
savedata('terminate');
return (true);
}
}
<?php
//--------------------------------------------------------------------//
@ -978,16 +1079,21 @@ function update_message_frame(msg_msg)
}
/**
* Function that handles the saving of an item and switching from an item to another.
* Once called, this function should be able to do the whole process of (1) saving the
* current item, (2) refresh all the values inside the SCORM API object, (3) open the
* new item into the content_id frame, (4) refresh the table of contents, (5) refresh
* the progress bar (completion), (6) refresh the message frame
* Once called, this function should be able to do the whole process of
* (1) saving the current item,
* (2) refresh all the values inside the SCORM API object,
* (3) open the new item into the content_id frame,
* (4) refresh the table of contents
* (5) refresh the progress bar (completion)
* (6) refresh the message frame
* @param integer Dokeos ID for the current item
* @param string This parameter can be a string specifying the next
* item (like 'next', 'previous', 'first' or 'last') or the id to the next item
*/
function switch_item(current_item, next_item){
//(1) save the current item
logit_lms('Called switch_item with params '+lms_item_id+' and '+next_item+'',0);
if(lms_lp_type==1 || lms_item_type=='asset' || session_time == '0' || session_time == '0:00:00'){
xajax_save_item(lms_lp_id, lms_user_id, lms_view_id, lms_item_id, score, max, min, lesson_status, asset_timer, suspend_data, lesson_location,interactions, lms_item_core_exit);

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