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174 lines
6.8 KiB
174 lines
6.8 KiB
<?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 script, in particular, enables the process of SCO's initialization. It
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* resets the JavaScript values for each SCO to the current LMS status.
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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 initialize_item($lp_id,$user_id,$view_id,$next_item)
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{
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$debug = 0;
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$return = '';
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if ($debug>0) {error_log('In initialize_item('.$lp_id.','.$user_id.','.$view_id.','.$next_item.')',0);}
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//$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($_SESSION['lpobject'])) {
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if ($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 = & $oLP;
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}
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}
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$mylp->set_current_item($next_item);
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if ($debug>1) {error_log('In initialize_item() - new item is '.$next_item,0);}
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$mylp->start_current_item(true);
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/*
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if ($mylp->force_commit) {
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$mylp->save_current();
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}
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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[$next_item])) {
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if($debug>1){error_log('In initialize_item - recovering existing item object '.$next_item,0);}
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$mylpi = & $mylp->items[$next_item];
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} else {
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if($debug>1){error_log('In initialize_item - generating new item object '.$next_item,0);}
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$mylpi =& new learnpathItem($next_item,$user_id);
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$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 = $mylpi->get_scorm_time('js',null,true);
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$mymastery_score = $mylpi->get_mastery_score();
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$mymax_time_allowed = $mylpi->get_max_time_allowed();
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$mylaunch_data = $mylpi->get_launch_data();
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$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($myistring,1);
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}
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$return .=
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"olms.score=".$myscore.";" .
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"olms.max=".$mymax.";" .
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"olms.min=".$mymin.";" .
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"olms.lesson_status='".$mylesson_status."';" .
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"olms.lesson_location='".$mylesson_location."';" .
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"olms.session_time='".$mysession_time."';" .
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"olms.suspend_data='".$mysuspend_data."';" .
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"olms.total_time = '".$mytotal_time."';" .
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"olms.mastery_score = '".$mymastery_score."';" .
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"olms.max_time_allowed = '".$mymax_time_allowed."';" .
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"olms.launch_data = '".$mylaunch_data."';" .
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"olms.interactions = new Array(".$myistring.");" .
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"olms.item_objectives = new Array();" .
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"olms.G_lastError = 0;" .
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"olms.G_LastErrorMessage = 'No error';" ;
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/*
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* and re-initialise the rest (proper to the LMS)
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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_initialized
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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 = $mylpi->get_core_exit();
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$return .=
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"olms.lms_lp_id=".$lp_id.";" .
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"olms.lms_item_id=".$next_item.";" .
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"olms.lms_old_item_id=0;" .
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"olms.lms_initialized=0;" .
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"olms.lms_view_id=".$view_id.";" .
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"olms.lms_user_id=".$user_id.";" .
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"olms.next_item=".$next_item.";" . //this one is very important to replace possible literal strings
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"olms.lms_next_item=".$mynext.";" .
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"olms.lms_previous_item=".$myprevious.";" .
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"olms.lms_item_type = '".$myitemtype."';" .
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"olms.lms_item_credit = '".$mycredit."';" .
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"olms.lms_item_lesson_mode = '".$mylesson_mode."';" .
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"olms.lms_item_launch_data = '".$mylaunch_data."';" .
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"olms.lms_item_interactions_count = '".$myinteractions_count."';" .
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"olms.lms_item_objectives_count = '".$myinteractions_count."';" .
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"olms.lms_item_core_exit = '".$mycore_exit."';" .
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"olms.asset_timer = 0;";
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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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//$_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 $return;
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}
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echo initialize_item($_POST['lid'],$_POST['uid'],$_POST['vid'],$_POST['iid']); |