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							793 lines
						
					
					
						
							27 KiB
						
					
					
				<?php
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/* For licensing terms, see /license.txt */
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use ChamiloSession as Session;
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/**
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 * API event handler functions for AICC / CMIv4 in API communication mode
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 *
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 * @author   Denes Nagy <darkden@freemail.hu>
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 * @author   Yannick Warnier <ywarnier@beeznest.org>
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 * @version  v 1.0
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 * @access   public
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 * @package  chamilo.learnpath
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 * @license    GNU/GPL
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 */
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/**
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 * This script is divided into three sections.
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 * The first section (below) is the initialisation part.
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 * The second section is the AICC object part
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 * The third section defines the event handlers for Chamilo's internal messaging
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 * and frames refresh
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 *
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 * This script implements the API messaging for AICC. The HACP messaging is
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 * made by another set of scripts.
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 */
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// Flag to allow for anonymous user - needs to be set before global.inc.php.
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$use_anonymous = true;
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// Load common libraries using a compatibility script to bridge between 1.6 and 1.8.
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require_once __DIR__.'/../inc/global.inc.php';
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// Is this needed? This is probabaly done in the header file.
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$file = Session::read('file');
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$oLP = unserialize(Session::read('lpobject'));
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$oItem = $oLP->items[$oLP->current];
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if (!is_object($oItem)) {
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    error_log('New LP - scorm_api - Could not load oItem item', 0);
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    exit;
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}
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$autocomplete_when_80pct = 0;
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/* JavaScript Functions */
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?>var scorm_logs=<?php echo(empty($oLP->scorm_debug) ? '0' : '3'); ?>; //debug log level for SCORM. 0 = none, 1=light, 2=a lot, 3=all - displays logs in log frame
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var lms_logs=0; //debug log level for LMS actions. 0=none, 1=light, 2=a lot, 3=all
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//logit_lms('scormfunctions.php included',0);
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function APIobject() {
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  this.LMSInitialize=LMSInitialize;
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  this.LMSGetValue=LMSGetValue;
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  this.LMSSetValue=LMSSetValue;
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  this.LMSCommit=LMSCommit;
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  this.LMSFinish=LMSFinish;
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  this.LMSGetLastError=LMSGetLastError;
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  this.LMSGetErrorString=LMSGetErrorString;
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  this.LMSGetDiagnostic=LMSGetDiagnostic;
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}
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// It is not sure that the scos use the above declarations.
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API = new APIobject(); //for scorm 1.2
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var G_NoError = 0;
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var G_GeneralException = 101;
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var G_ServerBusy = 102;
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var G_InvalidArgumentError = 201;
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var G_ElementCannotHaveChildren = 202;
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var G_ElementIsNotAnArray = 203;
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var G_NotInitialized = 301;
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var G_NotImplementedError = 401;
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var G_InvalidSetValue = 402;
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var G_ElementIsReadOnly = 403;
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var G_ElementIsWriteOnly = 404;
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var G_IncorrectDataType = 405;
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var G_LastError = G_NoError ;
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var commit = false ;
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// Strictly SCORM variables.
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var score=<?php echo $oItem->get_score(); ?>;
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var max=<?php echo $oItem->get_max(); ?>;
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var min=<?php echo $oItem->get_min(); ?>;
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var lesson_status='<?php echo $oItem->get_status(); ?>';
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var session_time='<?php echo $oItem->get_scorm_time('js'); ?>';
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var suspend_data = '<?php echo $oItem->get_suspend_data(); ?>';
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var lesson_location = '<?php echo $oItem->get_lesson_location(); ?>';
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var total_time = '<?php echo $oItem->get_scorm_time('js'); ?>';
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// Chamilo internal variables.
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var saved_lesson_status = 'not attempted';
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var lms_lp_id = <?php echo $oLP->get_id(); ?>;
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var lms_item_id = <?php echo $oItem->get_id(); ?>;
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//var lms_new_item_id = 0; //temporary value (only there between a load_item() and a LMSInitialize())
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var lms_been_synchronized = 0;
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var lms_initialized = 0;
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var lms_total_lessons = <?php echo $oLP->get_total_items_count(); ?>;
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var lms_complete_lessons = <?php echo $oLP->get_complete_items_count(); ?>;
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var lms_progress_bar_mode = '<?php echo $oLP->progress_bar_mode; ?>';
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if(lms_progress_bar_mode == ''){lms_progress_bar_mode='%';}
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var lms_view_id = '<?php echo $oLP->get_view(); ?>';
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if(lms_view_id == ''){ lms_view_id = 1;}
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var lms_user_id = '<?php echo $_user['user_id']; ?>';
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var lms_next_item = '<?php echo $oLP->get_next_item_id(); ?>';
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var lms_previous_item = '<?php echo $oLP->get_previous_item_id(); ?>';
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var lms_lp_type = '<?php echo $oLP->get_type(); ?>';
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var lms_item_type = '<?php echo $oItem->get_type(); ?>';
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// Backup for old values.
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var old_score = 0;
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var old_max = 0;
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var old_min = 0;
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var old_lesson_status = '';
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var old_session_time = '';
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var old_suspend_data = '';
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var lms_old_item_id = 0;
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function LMSInitialize() {  //this is the initialize function of all APIobjects
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    logit_scorm('LMSInitialise()',0);
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    lms_initialized=1;
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    return('true');
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}
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function LMSGetValue(param) {
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    //logit_scorm("LMSGetValue('"+param+"')",1);
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    var result='';
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    if(param=='cmi.core._children' || param=='cmi.core_children'){
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        result='entry, exit, lesson_status, student_id, student_name, lesson_location, total_time, credit, lesson_mode, score, session_time';
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    }else if(param == 'cmi.core.entry'){
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        result='';
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    }else if(param == 'cmi.core.exit'){
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        result='';
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    }else if(param == 'cmi.core.lesson_status'){
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        if(lesson_status != '') {
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            result=lesson_status;
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        }
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        else{
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            result='not attempted';
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        }
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    }else if(param == 'cmi.core.student_id'){
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        result='<?php echo $_user['user_id']; ?>';
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    }else if(param == 'cmi.core.student_name'){
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    <?php
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    $who = addslashes(api_get_person_name($_user['firstName'], $_user['lastName']));
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    echo "result='$who';";
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    ?>
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    }else if(param == 'cmi.core.lesson_location'){
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        result=lesson_location;
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    }else if(param == 'cmi.core.total_time'){
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        result=total_time;
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    }else if(param == 'cmi.core.score._children'){
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        result='raw,min,max';
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    }else if(param == 'cmi.core.score.raw'){
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        result=score;
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    }else if(param == 'cmi.core.score.max'){
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        result=max;
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    }else if(param == 'cmi.core.score.min'){
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        result=min;
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    }else if(param == 'cmi.core.score'){
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        result=score;
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    }else if(param == 'cmi.core.credit'){
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        result='no-credit';
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    }else if(param == 'cmi.core.lesson_mode'){
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        result='normal';
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    }else if(param == 'cmi.suspend_data'){
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        result='<?php echo $oItem->get_suspend_data(); ?>';
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    }else if(param == 'cmi.launch_data'){
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        result='';
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    }else if(param == 'cmi.objectives._count'){
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        result='<?php echo $oItem->get_view_count(); ?>';
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    }
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    /*
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    // Switch not working??? WTF???
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    switch(param) {
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        case 'cmi.core._children':
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            result='entry, exit, lesson_status, student_id, student_name, lesson_location, total_time, credit, lesson_mode, score, session_time';
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            break;
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        case 'cmi.core_children':
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            result='entry, exit, lesson_status, student_id, student_name, lesson_location, total_time, credit, lesson_mode, score, session_time';
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            break;
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        case 'cmi.core.entry':
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            result='';
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            break;
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        case 'cmi.core.exit':
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            result='';
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            break;
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        case 'cmi.core.lesson_status':
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            if(lesson_status != '') {
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                result=lesson_status;
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            }
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            else{
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                result='not attempted';
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            }
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            break;
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        case 'cmi.core.student_id':
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            result='<?php echo $_user['user_id']; ?>';
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            break;
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        case 'cmi.core.student_name':
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          <?php
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            $who = addslashes(api_get_person_name($_user['firstName'], $_user['lastName']));
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            echo "result='$who';";
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          ?>	break;
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        case 'cmi.core.lesson_location':
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            result='';
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            break;
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        case 'cmi.core.total_time':
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            result=total_time;
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            break;
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        case 'cmi.core.score._children':
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            result='raw,min,max';
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            break;
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        case 'cmi.core.score.raw':
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            result=score;
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            break;
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        case 'cmi.core.score.max':
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            result=max;
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            break;
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        case 'cmi.core.score.min':
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            result=min;
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            break;
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        case 'cmi.core.score':
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            result=score;
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            break;
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        case 'cmi.core.credit':
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            result='no-credit';
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            break;
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        case 'cmi.core.lesson_mode':
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            result='normal';
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            break;
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        case 'cmi.suspend_data':
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            result='<?php echo $oItem->get_suspend_data(); ?>';
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            break;
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        case 'cmi.launch_data':
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            result='';
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            break;
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        case 'cmi.objectives._count':
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            result='<?php echo $oItem->get_view_count(); ?>';
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            break;
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        default:
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            result='';
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            break;
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    }
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    */
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    logit_scorm("LMSGetValue('"+param+"') returned '"+result+"'",1);
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    return result;
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}
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function LMSSetValue(param, val) {
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    logit_scorm("LMSSetValue('"+param+"','"+val+"')",0);
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    switch(param) {
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    case 'cmi.core.score.raw'		: score= val ;			break;
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    case 'cmi.core.score.max'		: max = val;			break;
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    case 'cmi.core.score.min'		: min = val;			break;
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    case 'cmi.core.lesson_location' : lesson_location = val;break;
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    case 'cmi.core.lesson_status'	:
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        saved_lesson_status = lesson_status;
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        lesson_status = val;
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        <?php if ($oLP->mode != 'fullscreen') {
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              ?>
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        //var update = update_toc(lesson_status,lms_item_id);
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        <?php
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          } ?>
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        break;
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    case 'cmi.completion_status'	: lesson_status = val;	break; //1.3
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    case 'cmi.core.session_time'	: session_time = val;	break;
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    case 'cmi.score.scaled'			: score = val ;			break; //1.3
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    case 'cmi.success_status'		: success_status = val; break; //1.3
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    case 'cmi.suspend_data'			: suspend_data = val;   break;
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    }
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    //var update = update_toc();
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    //var update_progress = update_progress_bar();
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    <?php
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    if ($oLP->force_commit == 1) {
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        echo "	var mycommit = LMSCommit('force');";
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    }
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    ?>
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    return(true);
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}
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function savedata(origin) { //origin can be 'commit', 'finish' or 'terminate'
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    <?php if ($autocomplete_when_80pct) {
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        ?>
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    if( ( lesson_status == 'incomplete') && (score >= (0.8*max) ) ){
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      lesson_status = 'completed';
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    }
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    <?php
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    }?>
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    param = 'id='+lms_item_id+'&origin='+origin+'&score='+score+'&max='+max+'&min='+min+'&lesson_status='+lesson_status+'&time='+session_time+'&suspend_data='+suspend_data;
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    url="http://<?php
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    $self = api_get_self();
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    $url = $_SERVER['HTTP_HOST'].$self;
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    $url = substr($url, 0, -14); // 14 is the length of this file's name (/scorm_api.php).
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    echo $url;
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    ?>/lp_controller.php?<?php echo api_get_cidreq(); ?>&action=save&lp_id=<?php echo $oLP->get_id(); ?>&" + param + "";
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    logit_lms('saving data (status='+lesson_status+')',1);
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    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);
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    //xajax_update_pgs();
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    //xajax_update_toc();
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}
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function LMSCommit(val) {
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    logit_scorm('LMSCommit()',0);
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    commit = true ;
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    savedata('commit');
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    return('true');
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}
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function LMSFinish(val) {
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    if ( !commit ) {
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        logit_scorm('LMSFinish() (no LMSCommit())',1);
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    }
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    if ( commit ) {
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        logit_scorm('LMSFinish() called',1);
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        savedata('finish');
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    }
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    return('true');
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}
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function LMSGetLastError() {
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    logit_scorm('LMSGetLastError()',1);
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    return(G_LastError);
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}
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function LMSGetErrorString(errCode){
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    logit_scorm('LMSGetErrorString()',1);
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    return('No error !');
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}
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function LMSGetDiagnostic(errCode){
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    logit_scorm('LMSGetDiagnostic()',1);
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    return(API.LMSGetLastError());
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}
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<?php
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/**
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 * Chamilo-specific code that deals with event handling and inter-frames
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 * messaging/refreshing.
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 * Note that from now on, the Chamilo JS code in this library will act as
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 * a controller, of the MVC pattern, and receive all requests for frame
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 * updates, then redispatch to any frame concerned.
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 */
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?>
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/**
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 * Defining the AJAX-object class to be made available from other frames.
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 */
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function XAJAXobject() {
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  this.xajax_switch_item_details=xajax_switch_item_details;
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  this.switch_item=switch_item;
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}
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						|
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//it is not sure that the scos use the above declarations
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oXAJAX = new XAJAXobject();
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oxajax = new XAJAXobject();
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						|
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/**
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						|
 * Cross-browser event handling by Scott Andrew
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						|
 * @param	element	Element that needs an event attached
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						|
 * @param   string	Event type (load, unload, click, keyDown, ...)
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						|
 * @param   string	Function name (the event handler)
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						|
 * @param   string	used in addEventListener
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 */
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						|
function addEvent(elm, evType, fn, useCapture){
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						|
    if(elm.addEventListener){
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        elm.addEventListener(evType, fn, useCapture);
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						|
        return true;
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						|
    }else if (elm.attachEvent){
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						|
        var r = elm.attachEvent('on' + evType, fn);
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						|
    }else{
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						|
        elm['on'+evType] = fn;
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						|
    }
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}
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/**
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 * Add listeners to the page objects. This has to be defined for
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 * the current context as it acts on objects that should exist
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 * on the page
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 */
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function addListeners(){
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						|
    //exit if the browser doesn't support ID or tag retrieval
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						|
    logit_lms('Entering addListeners()',2);
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						|
    if(!document.getElementsByTagName){
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						|
        logit_lms("getElementsByTagName not available",2);
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						|
        return;
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						|
    }
 | 
						|
    if(!document.getElementById){
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						|
        logit_lms("getElementById not available",2);
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						|
        return;
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    }
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						|
    //assign event handlers to objects
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						|
    if(lms_lp_type==1 || lms_item_type=='asset'){
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        logit_lms('Dokeos LP or asset',2);
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						|
        // If this path is a Chamilo learnpath, then start manual save
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						|
        // when something is loaded in there.
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						|
        var myelem = document.getElementById('content_id');
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						|
        if(!myelem){logit_lms("Impossible to find content_id element in document",2);}
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						|
        addEvent(myelem,'unload',chamilo_save_asset,false);
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						|
        logit_lms('Added event listener on content_id for unload',2);
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						|
    }
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						|
    logit_lms('Quitting addListeners()',2);
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}
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						|
/**
 | 
						|
 * Load an item into the content frame:
 | 
						|
 * - making sure the previous item status have been saved
 | 
						|
 * - first updating the current item ID (to save the right item)
 | 
						|
 * - updating the frame src
 | 
						|
 */
 | 
						|
function load_item(item_id,url){
 | 
						|
    if(document.getElementById('content_id'))
 | 
						|
    {
 | 
						|
        logit_lms('Loading item '+item_id,2);
 | 
						|
        var cont_f = document.getElementById('content_id');
 | 
						|
        if(cont_f.src){
 | 
						|
            lms_old_item_id = lms_item_id;
 | 
						|
            var lms_new_item_id = item_id;
 | 
						|
            //load new content page into content frame
 | 
						|
            if(lms_lp_type==1 || lms_item_type=='asset'){
 | 
						|
                chamilo_save_asset();
 | 
						|
            }
 | 
						|
            cont_f.src = url;
 | 
						|
            update_toc('unhighlight',lms_old_item_id);
 | 
						|
            update_toc('highlight',item_id);
 | 
						|
            /* legacy code
 | 
						|
            lms_been_synchronized = 0;
 | 
						|
            lms_initialized = 0;
 | 
						|
            if(lms_lp_type==1 || lms_item_type=='asset'){
 | 
						|
                lms_item_id = lms_new_item_id;
 | 
						|
            }*/
 | 
						|
            return true;
 | 
						|
        }
 | 
						|
        logit_lms('cont_f.src has no properties',0);
 | 
						|
    }
 | 
						|
    logit_lms('content_id has no properties',0);
 | 
						|
    return false;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Save a Chamilo learnpath item's time and mark as completed upon
 | 
						|
 * leaving it
 | 
						|
 */
 | 
						|
function chamilo_save_asset(){
 | 
						|
    //var linkparams = 'id='+lms_item_id+'&score='+score+'&max='+max+'&min='+min+'&lesson_status='+lesson_status+'&time='+session_time+'&suspend_data='+suspend_data;
 | 
						|
    //var url = "<?php echo api_get_path(WEB_CODE_PATH).'lp/lp_controller.php'; ?>?action=save&" + linkparams + "";
 | 
						|
    logit_lms('chamilo_save_asset: '+url,0);
 | 
						|
    //frames["message_name"].src = url;
 | 
						|
    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);
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Logs information about SCORM messages into the log frame
 | 
						|
 * @param	string	Message to log
 | 
						|
 * @param	integer Priority (0 for top priority, 3 for lowest)
 | 
						|
 */
 | 
						|
function logit_scorm(message,priority) {
 | 
						|
    if (scorm_logs) {
 | 
						|
        log_in_log("SCORM: " + message);
 | 
						|
    }
 | 
						|
    return false;
 | 
						|
 | 
						|
    /*if(frames["lp_log_name"] && scorm_logs>priority){
 | 
						|
        frames["lp_log_name"].document.getElementById("log_content").innerHTML += "AICC: " + message + "<br/>";
 | 
						|
    }*/
 | 
						|
}
 | 
						|
 | 
						|
function log_in_log(message) {
 | 
						|
    var ua = $.browser;
 | 
						|
    if (ua.mozilla) {
 | 
						|
        console.log(message);
 | 
						|
    } else {
 | 
						|
        if (window.console) {
 | 
						|
            window.console.log(message);
 | 
						|
        }
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Logs information about LMS activity into the log frame
 | 
						|
 * @param	string	Message to log
 | 
						|
 * @param	integer Priority (0 for top priority, 3 for lowest)
 | 
						|
 */
 | 
						|
function logit_lms(message,priority) {
 | 
						|
    /*
 | 
						|
    if(frames["lp_log_name"] && lms_logs>priority){
 | 
						|
        frames["lp_log_name"].document.getElementById("log_content").innerHTML += "LMS: " + message + "<br/>";
 | 
						|
    }*/
 | 
						|
 | 
						|
    if (scorm_logs) {
 | 
						|
        log_in_log("LMS: " + message);
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * update the Table Of Contents frame, by changing CSS styles, mostly
 | 
						|
 * @param	string	Action to be taken
 | 
						|
 * @param	integer	Item id to update
 | 
						|
 */
 | 
						|
function update_toc(update_action,update_id)
 | 
						|
{
 | 
						|
    <?php if ($oLP->mode != 'fullscreen') {
 | 
						|
    ?>
 | 
						|
        var myframe = frames["toc_name"];
 | 
						|
        var myelem = myframe.document.getElementById("toc_"+update_id);
 | 
						|
        var myelemimg = myframe.document.getElementById("toc_img_"+update_id);
 | 
						|
        logit_lms('update_toc('+update_action+','+update_id+')',2);
 | 
						|
        if(update_id != 0){
 | 
						|
            switch(update_action){
 | 
						|
                case 'unhighlight':
 | 
						|
                    myelem.className = "scorm_item";
 | 
						|
                    break;
 | 
						|
                case 'highlight':
 | 
						|
                    myelem.className = "scorm_item_highlight";
 | 
						|
                    break;
 | 
						|
                case 'not attempted':
 | 
						|
                    if(myelemimg.src != '../img/notattempted.gif'){
 | 
						|
                        myelemimg.src = "../img/notattempted.gif";
 | 
						|
                        myelemimg.alt = "not attempted";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                case 'incomplete':
 | 
						|
                    if(myelemimg.src != '../img/incomplete.png'){
 | 
						|
                        myelemimg.src = "../img/incomplete.png";
 | 
						|
                        myelemimg.alt = "incomplete";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                case 'completed':
 | 
						|
                    if(myelemimg.src != '../img/completed.png'){
 | 
						|
                        myelemimg.src = "../img/completed.png";
 | 
						|
                        myelemimg.alt = "completed";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                case 'failed':
 | 
						|
                    if(myelemimg.src != '../img/failed.png'){
 | 
						|
                        myelemimg.src = "../img/failed.png";
 | 
						|
                        myelemimg.alt = "failed";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                case 'passed':
 | 
						|
                    if(myelemimg.src != '../img/completed.png' && myelemimg.alt != 'passed'){
 | 
						|
                        myelemimg.src = "../img/completed.png";
 | 
						|
                        myelemimg.alt = "passed";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                case 'browsed':
 | 
						|
                    if(myelemimg.src != '../img/completed.png' && myelemimg.alt != 'browsed'){
 | 
						|
                        myelemimg.src = "../img/completed.png";
 | 
						|
                        myelemimg.alt = "browsed";
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                default:
 | 
						|
                    logit_lms('Update action unknown',2);
 | 
						|
                    break;
 | 
						|
            }
 | 
						|
        }
 | 
						|
        return true;
 | 
						|
    <?php
 | 
						|
} ?>
 | 
						|
    return true;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Updates the progress bar with the new status. Prevents the need of a page refresh and flickering
 | 
						|
 * @param	integer	Number of completed items
 | 
						|
 * @param	integer	Number of items in total
 | 
						|
 * @param	string  Display mode (absolute 'abs' or percentage '%').Defaults to %
 | 
						|
 */
 | 
						|
function update_progress_bar(nbr_complete, nbr_total, mode)
 | 
						|
{
 | 
						|
    logit_lms('update_progress_bar('+nbr_complete+','+nbr_total+','+mode+')',2);
 | 
						|
    logit_lms('could update with data: '+lms_lp_id+','+lms_view_id+','+lms_user_id,2);
 | 
						|
    var myframe = frames["nav_name"];
 | 
						|
    if(myframe){
 | 
						|
        if(mode == ''){mode='%';}
 | 
						|
        if(nbr_total == 0){nbr_total=1;}
 | 
						|
        var percentage = (nbr_complete/nbr_total)*100;
 | 
						|
        percentage = Math.round(percentage);
 | 
						|
 | 
						|
        var progress_bar  = $("#progress_bar_value");
 | 
						|
        progress_bar.css('width', percentage +"%");
 | 
						|
 | 
						|
    /*
 | 
						|
        var pr_text  = myframe.document.getElementById('progress_text');
 | 
						|
        var pr_full  = myframe.document.getElementById('progress_img_full');
 | 
						|
 | 
						|
        var pr_empty = myframe.document.getElementById('progress_img_empty');
 | 
						|
        pr_full.width = percentage;
 | 
						|
        pr_empty.width = 100-percentage;
 | 
						|
        */
 | 
						|
 | 
						|
        var mytext = '';
 | 
						|
        switch(mode){
 | 
						|
            case 'abs':
 | 
						|
                mytext = nbr_complete + '/' + nbr_total;
 | 
						|
                break;
 | 
						|
            case '%':
 | 
						|
            default:
 | 
						|
                mytext = percentage + '%';
 | 
						|
                break;
 | 
						|
        }
 | 
						|
        pr_text.innerHTML = mytext;
 | 
						|
    }
 | 
						|
    return true;
 | 
						|
}
 | 
						|
function update_stats_page()
 | 
						|
{
 | 
						|
    var myframe = document.getElementById('content_id');
 | 
						|
    var mysrc = myframe.location.href;
 | 
						|
    if(mysrc == 'lp_controller.php?action=stats'){
 | 
						|
        if(myframe && myframe.src){
 | 
						|
            var mysrc = myframe.src;
 | 
						|
            myframe.src = mysrc;
 | 
						|
        }
 | 
						|
        // = mysrc; //refresh page
 | 
						|
    }
 | 
						|
    return true;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Updates the message frame with the given string
 | 
						|
 */
 | 
						|
function update_message_frame(msg_msg)
 | 
						|
{
 | 
						|
    if(msg_msg==null){msg_msg='';}
 | 
						|
    var msg_f = frames["message_name"];
 | 
						|
    if(!msg_f.document || !msg_f.document.getElementById('msg_div_id')){
 | 
						|
        logit_lms('In update_message_frame() - message frame has no document property',0);
 | 
						|
    }else{
 | 
						|
        logit_lms('In update_message_frame() - updating frame',0);
 | 
						|
        msg_f.document.getElementById('msg_div_id').innerHTML= 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
 | 
						|
 * @param	integer		Chamilo 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){
 | 
						|
    /*
 | 
						|
    if(!current_item){
 | 
						|
        logit_lms('In switch - no current_item defined',0);
 | 
						|
    }
 | 
						|
    if(!next_item){
 | 
						|
        logit_lms('In switch - no next_item defined',0);
 | 
						|
    }
 | 
						|
    */
 | 
						|
    if(lms_item_id == next_item){
 | 
						|
        return; //nothing to switch
 | 
						|
    }
 | 
						|
    //(1) save the current item
 | 
						|
    logit_lms('Called switch_item with params '+lms_item_id+' and '+next_item+'',0);
 | 
						|
    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);
 | 
						|
 | 
						|
    //(2) Refresh all the values inside this SCORM API object - use AJAX
 | 
						|
    xajax_switch_item_details(lms_lp_id,lms_user_id,lms_view_id,lms_item_id,next_item);
 | 
						|
 | 
						|
    //(3) open the new item in the content_id frame
 | 
						|
    var cont_f = document.getElementById('content_id');
 | 
						|
    if(!cont_f){logit_lms('In switch - content frame not found',0);return false;}
 | 
						|
    switch(next_item){
 | 
						|
        case 'next':
 | 
						|
            next_item = lms_next_item;
 | 
						|
            break;
 | 
						|
        case 'previous':
 | 
						|
            next_item = lms_previous_item;
 | 
						|
            break;
 | 
						|
        default:
 | 
						|
            break;
 | 
						|
    }
 | 
						|
    cont_f.src = 'lp_controller.php?action=content&lp_id='+lms_lp_id+'&item_id='+next_item;
 | 
						|
 | 
						|
    //(4) refresh table of contents
 | 
						|
    /*
 | 
						|
    var toc_f = document.getElementById('toc_id');
 | 
						|
    if(!toc_f){logit_lms('In switch - toc frame not found',0);return false;}
 | 
						|
    var myrefresh = toc_f.src;
 | 
						|
    toc_f.src = myrefresh;
 | 
						|
    */
 | 
						|
 | 
						|
    //(5) refresh the progress bar
 | 
						|
    /*
 | 
						|
    var prg_f = document.getElementById('nav_id');
 | 
						|
    if(!prg_f){logit_lms('In switch - navigation frame not found',0);return false;}
 | 
						|
    var myrefresh = prg_f.src;
 | 
						|
    prg_f.src = myrefresh;
 | 
						|
    */
 | 
						|
 | 
						|
    //(6) refresh the message box (included in switch_item_details)
 | 
						|
    return true;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Save a specific item (with its interactions, if any) into the LMS through
 | 
						|
 * an AJAX call. Originally, we used the xajax library. Now we use jQuery.
 | 
						|
 * Because of the need to pass an array, we have to build the parameters
 | 
						|
 * manually into GET[]
 | 
						|
 */
 | 
						|
function 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) {
 | 
						|
        params='';
 | 
						|
        params += 'lid='+lms_lp_id+'&uid='+lms_user_id+'&vid='+lms_view_id;
 | 
						|
        params += '&iid='+lms_item_id+'&s='+score+'&max='+max+'&min='+min;
 | 
						|
        params += '&status='+lesson_status+'&t='+session_time;
 | 
						|
        params += '&suspend='+suspend_data+'&loc='+lesson_location;
 | 
						|
        params += '&core_exit='+lms_item_core_exit;
 | 
						|
        interact_string = '';
 | 
						|
        for (i in interactions){
 | 
						|
            interact_string += '&interact['+i+']=';
 | 
						|
            interact_temp = '[';
 | 
						|
            for (j in interactions[i]) {
 | 
						|
                interact_temp += interactions[i][j]+',';
 | 
						|
            }
 | 
						|
            interact_temp = interact_temp.substr(0,(interact_temp.length-2)) + ']';
 | 
						|
            interact_string += encodeURIComponent(interact_temp);
 | 
						|
        }
 | 
						|
        //interact_string = encodeURIComponent(interact_string.substr(0,(interact_string.length-1)));
 | 
						|
        params += interact_string;
 | 
						|
        /*params = {
 | 
						|
            'lid': lms_lp_id,
 | 
						|
            'uid': lms_user_id,
 | 
						|
            'vid': lms_view_id,
 | 
						|
            'iid': lms_item_id,
 | 
						|
            's': score,
 | 
						|
            'max': max,
 | 
						|
            'min': min,
 | 
						|
            'status': lesson_status,
 | 
						|
            't': session_time,
 | 
						|
            'suspend': suspend_data,
 | 
						|
            'loc': lesson_location,
 | 
						|
            'interact': interac_string,
 | 
						|
            'core_exit': lms_item_core_exit
 | 
						|
        }
 | 
						|
        */
 | 
						|
        $.ajax({
 | 
						|
            type:"POST",
 | 
						|
            data: params,
 | 
						|
            url: "lp_ajax_save_item.php",
 | 
						|
            dataType: "script",
 | 
						|
            async: false
 | 
						|
            }
 | 
						|
        );
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Starts the timer with the server clock time.
 | 
						|
 * Originally, we used the xajax library. Now we use jQuery
 | 
						|
 */
 | 
						|
function xajax_start_timer() {
 | 
						|
    $.ajax({
 | 
						|
        type: "GET",
 | 
						|
        url: "lp_ajax_start_timer.php",
 | 
						|
        dataType: "script",
 | 
						|
        async: false
 | 
						|
    });
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Save a specific item's objectives into the LMS through
 | 
						|
 * an AJAX call. Originally, we used the xajax library. Now we use jQuery
 | 
						|
 */
 | 
						|
function xajax_save_objectives(lms_lp_id,lms_user_id,lms_view_id,lms_item_id,item_objectives) {
 | 
						|
        params='';
 | 
						|
        params += 'lid='+lms_lp_id+'&uid='+lms_user_id+'&vid='+lms_view_id;
 | 
						|
        params += '&iid='+lms_item_id;
 | 
						|
        obj_string = '';
 | 
						|
        for (i in item_objectives){
 | 
						|
            obj_string += '&objectives['+i+']=';
 | 
						|
            obj_temp = '[';
 | 
						|
            for (j in item_objectives[i]) {
 | 
						|
                obj_temp += item_objectives[i][j]+',';
 | 
						|
            }
 | 
						|
            obj_temp = obj_temp.substr(0,(obj_temp.length-2)) + ']';
 | 
						|
            obj_string += encodeURIComponent(obj_temp);
 | 
						|
        }
 | 
						|
        params += obj_string;
 | 
						|
        $.ajax({
 | 
						|
            type: "POST",
 | 
						|
            data: params,
 | 
						|
            url: "lp_ajax_save_objectives.php",
 | 
						|
            dataType: "script",
 | 
						|
            async: false
 | 
						|
        });
 | 
						|
}
 | 
						|
/**
 | 
						|
 * Switch between two items through
 | 
						|
 * an AJAX call. Originally, we used the xajax library. Now we use jQuery
 | 
						|
 */
 | 
						|
function xajax_switch_item_details(lms_lp_id,lms_user_id,lms_view_id,lms_item_id,next_item) {
 | 
						|
    params = {
 | 
						|
        'lid': lms_lp_id,
 | 
						|
        'uid': lms_user_id,
 | 
						|
        'vid': lms_view_id,
 | 
						|
        'iid': lms_item_id,
 | 
						|
        'next': next_item
 | 
						|
    }
 | 
						|
    $.ajax({
 | 
						|
        type: "POST",
 | 
						|
        data: params,
 | 
						|
        url: "lp_ajax_switch_item.php",
 | 
						|
        dataType: "script",
 | 
						|
        async: false
 | 
						|
    });
 | 
						|
}
 | 
						|
addEvent(window,'load',addListeners,false);
 | 
						|
 |