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+<?php //$id$
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+/**
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+ * This script contains the server part of the xajax interaction process. The client part is located
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+ * in lp_api.php or other api's.
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+ * This is a first attempt at using xajax and AJAX in general, so the code might be a bit unsettling.
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+ * @package dokeos.learnpath
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+ * @author Yannick Warnier <ywarnier@beeznest.org>
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+ */
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+/**
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+ * Script
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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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+$use_anonymous = true;
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+// name of the language file that needs to be included
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+$language_file[] = 'learnpath';
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+require_once('back_compat.inc.php');
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+/**
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+ * Get one item's details
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+ * @param integer LP ID
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+ * @param integer user ID
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+ * @param integer View ID
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+ * @param integer Current item ID
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+ * @param integer New item ID
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+ */
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+function switch_item_details($lp_id,$user_id,$view_id,$current_item,$next_item)
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+{
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+ $debug=0;
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+ $return = '';
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+ if($debug>0){error_log('In xajax_switch_item_details('.$lp_id.','.$user_id.','.$view_id.','.$current_item.','.$next_item.')',0);}
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+ //$objResponse = new xajaxResponse();
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+ /*$item_id may be one of:
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+ * -'next'
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+ * -'previous'
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+ * -'first'
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+ * -'last'
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+ * - a real item ID
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+ */
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+ require_once('learnpath.class.php');
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+ require_once('scorm.class.php');
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+ require_once('aicc.class.php');
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+ require_once('learnpathItem.class.php');
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+ require_once('scormItem.class.php');
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+ require_once('aiccItem.class.php');
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+ $mylp = '';
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+ if(isset($_SESSION['lpobject']))
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+ {
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+ if($debug>1){error_log('////$_SESSION[lpobject] is set',0);}
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+ $oLP =& unserialize($_SESSION['lpobject']);
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+ if(!is_object($oLP)){
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+ if($debug>1){error_log(print_r($oLP,true),0);}
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+ if($debug>2){error_log('////Building new lp',0);}
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+ unset($oLP);
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+ $code = api_get_course_id();
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+ $mylp = & new learnpath($code,$lp_id,$user_id);
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+ }else{
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+ if($debug>1){error_log('////Reusing session lp',0);}
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+ $mylp = & $oLP;
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+ }
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+ }
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+ $new_item_id = 0;
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+ switch($next_item){
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+ case 'next':
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+ $mylp->set_current_item($current_item);
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+ $mylp->next();
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+ $new_item_id = $mylp->get_current_item_id();
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+ if($debug>1){error_log('In {next} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
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+ break;
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+ case 'previous':
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+ $mylp->set_current_item($current_item);
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+ $mylp->previous();
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+ $new_item_id = $mylp->get_current_item_id();
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+ if($debug>1){error_log('In {previous} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
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+ break;
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+ case 'first':
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+ $mylp->set_current_item($current_item);
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+ $mylp->first();
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+ $new_item_id = $mylp->get_current_item_id();
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+ if($debug>1){error_log('In {first} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
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+ break;
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+ case 'last':
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+ break;
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+ default:
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+ //should be filtered to check it's not hacked
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+ if($next_item == $current_item){
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+ //if we're opening the same item again
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+ $mylp->items[$current_item]->restart();
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+ }
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+ $new_item_id = $next_item;
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+ $mylp->set_current_item($new_item_id);
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+ if($debug>1){error_log('In {default} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
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+ break;
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+ }
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+ $mylp->start_current_item(true);
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+ if($mylp->force_commit){
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+ $mylp->save_current();
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+ }
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+ //$objResponse->addAlert(api_get_path(REL_CODE_PATH).'newscorm/learnpathItem.class.php');
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+ if(is_object($mylp->items[$new_item_id])){
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+ $mylpi = & $mylp->items[$new_item_id];
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+ }else{
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+ if($debug>1){error_log('In switch_item_details - generating new item object',0);}
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+ $mylpi =& new learnpathItem($new_item_id,$user_id);
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+ $mylpi->set_lp_view($view_id);
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+ }
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+ /*
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+ * now get what's needed by the SCORM API:
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+ * -score
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+ * -max
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+ * -min
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+ * -lesson_status
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+ * -session_time
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+ * -suspend_data
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+ */
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+ $myscore = $mylpi->get_score();
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+ $mymax = $mylpi->get_max();
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+ if($mymax===''){$mymax="''";}
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+ $mymin = $mylpi->get_min();
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+ $mylesson_status = $mylpi->get_status();
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+ $mylesson_location = $mylpi->get_lesson_location();
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+ $mytotal_time = $mylpi->get_scorm_time('js');
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+ $mymastery_score = $mylpi->get_mastery_score();
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+ $mymax_time_allowed = $mylpi->get_max_time_allowed();
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+ $mylaunch_data = $mylpi->get_launch_data();
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+ /*
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+ if($mylpi->get_type() == 'asset'){
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+ //temporary measure to save completion of an asset. Later on, Dokeos should trigger something on unload, maybe... (even though that would mean the last item cannot be completed)
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+ $mylesson_status = 'completed';
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+ $mylpi->set_status('completed');
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+ $mylpi->save();
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+ }
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+ */
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+ $mysession_time = $mylpi->get_total_time();
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+ $mysuspend_data = $mylpi->get_suspend_data();
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+ $mylesson_location = $mylpi->get_lesson_location();
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+ $myic = $mylpi->get_interactions_count();
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+ $myistring = '';
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+ for ($i=0;$i<$myic;$i++) {
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+ $myistring .= ",[".$i.",'','','','','','','']";
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+ }
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+ if (!empty($myistring)) {
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+ $myistring = substr($myistring,1);
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+ }
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+ //$objResponse->addScript(
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+ $return .=
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+ "score=".$myscore.";" .
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+ "max=".$mymax.";" .
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+ "min=".$mymin.";" .
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+ "lesson_status='".$mylesson_status."';" .
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+ "lesson_location='".$mylesson_location."';" .
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+ "session_time='".$mysession_time."';" .
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+ "suspend_data='".$mysuspend_data."';" .
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+ "total_time = '".$mytotal_time."';" .
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+ "mastery_score = '".$mymastery_score."';" .
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+ "max_time_allowed = '".$mymax_time_allowed."';" .
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+ "launch_data = '".$mylaunch_data."';" .
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+ "interactions = new Array(".$myistring.");" .
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+ "item_objectives = new Array();" .
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+ "G_lastError = 0;" .
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+ "G_LastErrorMessage = 'No error';";
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+ //);
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+ /*
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+ * and re-initialise the rest
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+ * -saved_lesson_status = 'not attempted'
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+ * -lms_lp_id
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+ * -lms_item_id
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+ * -lms_old_item_id
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+ * -lms_new_item_id
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+ * -lms_been_synchronized
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+ * -lms_initialized
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+ * -lms_total_lessons
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+ * -lms_complete_lessons
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+ * -lms_progress_bar_mode
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+ * -lms_view_id
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+ * -lms_user_id
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+ */
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+ $mytotal = $mylp->get_total_items_count_without_chapters();
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+ $mycomplete = $mylp->get_complete_items_count();
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+ $myprogress_mode = $mylp->get_progress_bar_mode();
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+ $myprogress_mode = ($myprogress_mode==''?'%':$myprogress_mode);
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+ $mynext = $mylp->get_next_item_id();
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+ $myprevious = $mylp->get_previous_item_id();
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+ $myitemtype = $mylpi->get_type();
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+ $mylesson_mode = $mylpi->get_lesson_mode();
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+ $mycredit = $mylpi->get_credit();
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+ $mylaunch_data = $mylpi->get_launch_data();
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+ $myinteractions_count = $mylpi->get_interactions_count();
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+ $myobjectives_count = $mylpi->get_objectives_count();
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+ $mycore_exit = $mylpi->get_core_exit();
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+
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+ //$objResponse->addScript(
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+ $return .=
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+ "saved_lesson_status='not attempted';" .
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+ "lms_lp_id=".$lp_id.";" .
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+ "lms_item_id=".$new_item_id.";" .
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+ "lms_old_item_id=0;" .
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+ "lms_been_synchronized=0;" .
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+ "lms_initialized=0;" .
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+ "lms_total_lessons=".$mytotal.";" .
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+ "lms_complete_lessons=".$mycomplete.";" .
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+ "lms_progress_bar_mod='".$myprogress_mode."';" .
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+ "lms_view_id=".$view_id.";" .
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+ "lms_user_id=".$user_id.";" .
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+ "next_item=".$new_item_id.";" . //this one is very important to replace possible literal strings
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+ "lms_next_item=".$mynext.";" .
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+ "lms_previous_item=".$myprevious.";" .
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+ "lms_item_type = '".$myitemtype."';" .
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+ "lms_item_credit = '".$mycredit."';" .
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+ "lms_item_lesson_mode = '".$mylesson_mode."';" .
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+ "lms_item_launch_data = '".$mylaunch_data."';" .
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+ "lms_item_interactions_count = '".$myinteractions_count."';" .
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+ "lms_item_objectives_count = '".$myinteractions_count."';" .
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+ "lms_item_core_exit = '".$mycore_exit."';" .
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+ "asset_timer = 0;";
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+ //);
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+ //$objResponse->addScript("update_toc('unhighlight','".$current_item."');");
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+ //$objResponse->addScript("update_toc('highlight','".$new_item_id."');");
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+ //$objResponse->addScript("update_toc('$mylesson_status','".$new_item_id."');");
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+ //$objResponse->addScript("update_progress_bar('$mycomplete','$mytotal','$myprogress_mode');");
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+ $return .= "update_toc('unhighlight','".$current_item."');".
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+ "update_toc('highlight','".$new_item_id."');".
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+ "update_toc('$mylesson_status','".$new_item_id."');".
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+ "update_progress_bar('$mycomplete','$mytotal','$myprogress_mode');";
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+
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+ $mylp->set_error_msg('');
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+ $mylp->prerequisites_match(); //check the prerequisites are all complete
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+ if($debug>1){error_log('Prereq_match() returned '.htmlentities($mylp->error),0);}
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+ //$objResponse->addScript("update_message_frame('".str_replace("'","\'",htmlentities($mylp->error))."');");
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+ $return .= "update_message_frame('".str_replace("'","\'",htmlentities($mylp->error))."');";
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+ $_SESSION['scorm_item_id'] = $new_item_id;//Save the new item ID for the exercise tool to use
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+ $_SESSION['lpobject'] = serialize($mylp);
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+ return $return;
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+ //return $objResponse;
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+}
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+echo switch_item_details($_GET['lid'],$_GET['uid'],$_GET['vid'],$_GET['iid'],$_GET['next']);
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