123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234 |
- <?php //$id$
- /**
- * This script contains the server part of the xajax interaction process. The client part is located
- * in lp_api.php or other api's.
- * This is a first attempt at using xajax and AJAX in general, so the code might be a bit unsettling.
- * @package dokeos.learnpath
- * @author Yannick Warnier <ywarnier@beeznest.org>
- */
- /**
- * Script
- */
- //flag to allow for anonymous user - needs to be set before global.inc.php
- $use_anonymous = true;
- // name of the language file that needs to be included
- $language_file[] = 'learnpath';
- require_once('back_compat.inc.php');
- /**
- * Get one item's details
- * @param integer LP ID
- * @param integer user ID
- * @param integer View ID
- * @param integer Current item ID
- * @param integer New item ID
- */
- function switch_item_details($lp_id,$user_id,$view_id,$current_item,$next_item)
- {
- $debug=0;
- $return = '';
- if($debug>0){error_log('In xajax_switch_item_details('.$lp_id.','.$user_id.','.$view_id.','.$current_item.','.$next_item.')',0);}
- //$objResponse = new xajaxResponse();
- /*$item_id may be one of:
- * -'next'
- * -'previous'
- * -'first'
- * -'last'
- * - a real item ID
- */
- require_once('learnpath.class.php');
- require_once('scorm.class.php');
- require_once('aicc.class.php');
- require_once('learnpathItem.class.php');
- require_once('scormItem.class.php');
- require_once('aiccItem.class.php');
- $mylp = '';
- if(isset($_SESSION['lpobject']))
- {
- if($debug>1){error_log('////$_SESSION[lpobject] is set',0);}
- $oLP =& unserialize($_SESSION['lpobject']);
- if(!is_object($oLP)){
- if($debug>1){error_log(print_r($oLP,true),0);}
- if($debug>2){error_log('////Building new lp',0);}
- unset($oLP);
- $code = api_get_course_id();
- $mylp = & new learnpath($code,$lp_id,$user_id);
- }else{
- if($debug>1){error_log('////Reusing session lp',0);}
- $mylp = & $oLP;
- }
- }
- $new_item_id = 0;
- switch($next_item){
- case 'next':
- $mylp->set_current_item($current_item);
- $mylp->next();
- $new_item_id = $mylp->get_current_item_id();
- if($debug>1){error_log('In {next} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
- break;
- case 'previous':
- $mylp->set_current_item($current_item);
- $mylp->previous();
- $new_item_id = $mylp->get_current_item_id();
- if($debug>1){error_log('In {previous} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
- break;
- case 'first':
- $mylp->set_current_item($current_item);
- $mylp->first();
- $new_item_id = $mylp->get_current_item_id();
- if($debug>1){error_log('In {first} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
- break;
- case 'last':
- break;
- default:
- //should be filtered to check it's not hacked
- if($next_item == $current_item){
- //if we're opening the same item again
- $mylp->items[$current_item]->restart();
- }
- $new_item_id = $next_item;
- $mylp->set_current_item($new_item_id);
- if($debug>1){error_log('In {default} - next item is '.$new_item_id.'(current: '.$current_item.')',0);}
- break;
- }
- $mylp->start_current_item(true);
- if($mylp->force_commit){
- $mylp->save_current();
- }
- //$objResponse->addAlert(api_get_path(REL_CODE_PATH).'newscorm/learnpathItem.class.php');
- if(is_object($mylp->items[$new_item_id])){
- $mylpi = & $mylp->items[$new_item_id];
- }else{
- if($debug>1){error_log('In switch_item_details - generating new item object',0);}
- $mylpi =& new learnpathItem($new_item_id,$user_id);
- $mylpi->set_lp_view($view_id);
- }
- /*
- * now get what's needed by the SCORM API:
- * -score
- * -max
- * -min
- * -lesson_status
- * -session_time
- * -suspend_data
- */
- $myscore = $mylpi->get_score();
- $mymax = $mylpi->get_max();
- if($mymax===''){$mymax="''";}
- $mymin = $mylpi->get_min();
- $mylesson_status = $mylpi->get_status();
- $mylesson_location = $mylpi->get_lesson_location();
- $mytotal_time = $mylpi->get_scorm_time('js');
- $mymastery_score = $mylpi->get_mastery_score();
- $mymax_time_allowed = $mylpi->get_max_time_allowed();
- $mylaunch_data = $mylpi->get_launch_data();
- /*
- if($mylpi->get_type() == 'asset'){
- //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)
- $mylesson_status = 'completed';
- $mylpi->set_status('completed');
- $mylpi->save();
- }
- */
- $mysession_time = $mylpi->get_total_time();
- $mysuspend_data = $mylpi->get_suspend_data();
- $mylesson_location = $mylpi->get_lesson_location();
- $myic = $mylpi->get_interactions_count();
- $myistring = '';
- for ($i=0;$i<$myic;$i++) {
- $myistring .= ",[".$i.",'','','','','','','']";
- }
- if (!empty($myistring)) {
- $myistring = substr($myistring,1);
- }
- //$objResponse->addScript(
- $return .=
- "score=".$myscore.";" .
- "max=".$mymax.";" .
- "min=".$mymin.";" .
- "lesson_status='".$mylesson_status."';" .
- "lesson_location='".$mylesson_location."';" .
- "session_time='".$mysession_time."';" .
- "suspend_data='".$mysuspend_data."';" .
- "total_time = '".$mytotal_time."';" .
- "mastery_score = '".$mymastery_score."';" .
- "max_time_allowed = '".$mymax_time_allowed."';" .
- "launch_data = '".$mylaunch_data."';" .
- "interactions = new Array(".$myistring.");" .
- "item_objectives = new Array();" .
- "G_lastError = 0;" .
- "G_LastErrorMessage = 'No error';";
- //);
- /*
- * and re-initialise the rest
- * -saved_lesson_status = 'not attempted'
- * -lms_lp_id
- * -lms_item_id
- * -lms_old_item_id
- * -lms_new_item_id
- * -lms_been_synchronized
- * -lms_initialized
- * -lms_total_lessons
- * -lms_complete_lessons
- * -lms_progress_bar_mode
- * -lms_view_id
- * -lms_user_id
- */
- $mytotal = $mylp->get_total_items_count_without_chapters();
- $mycomplete = $mylp->get_complete_items_count();
- $myprogress_mode = $mylp->get_progress_bar_mode();
- $myprogress_mode = ($myprogress_mode==''?'%':$myprogress_mode);
- $mynext = $mylp->get_next_item_id();
- $myprevious = $mylp->get_previous_item_id();
- $myitemtype = $mylpi->get_type();
- $mylesson_mode = $mylpi->get_lesson_mode();
- $mycredit = $mylpi->get_credit();
- $mylaunch_data = $mylpi->get_launch_data();
- $myinteractions_count = $mylpi->get_interactions_count();
- $myobjectives_count = $mylpi->get_objectives_count();
- $mycore_exit = $mylpi->get_core_exit();
-
- //$objResponse->addScript(
- $return .=
- "saved_lesson_status='not attempted';" .
- "lms_lp_id=".$lp_id.";" .
- "lms_item_id=".$new_item_id.";" .
- "lms_old_item_id=0;" .
- "lms_been_synchronized=0;" .
- "lms_initialized=0;" .
- "lms_total_lessons=".$mytotal.";" .
- "lms_complete_lessons=".$mycomplete.";" .
- "lms_progress_bar_mod='".$myprogress_mode."';" .
- "lms_view_id=".$view_id.";" .
- "lms_user_id=".$user_id.";" .
- "next_item=".$new_item_id.";" . //this one is very important to replace possible literal strings
- "lms_next_item=".$mynext.";" .
- "lms_previous_item=".$myprevious.";" .
- "lms_item_type = '".$myitemtype."';" .
- "lms_item_credit = '".$mycredit."';" .
- "lms_item_lesson_mode = '".$mylesson_mode."';" .
- "lms_item_launch_data = '".$mylaunch_data."';" .
- "lms_item_interactions_count = '".$myinteractions_count."';" .
- "lms_item_objectives_count = '".$myinteractions_count."';" .
- "lms_item_core_exit = '".$mycore_exit."';" .
- "asset_timer = 0;";
- //);
- //$objResponse->addScript("update_toc('unhighlight','".$current_item."');");
- //$objResponse->addScript("update_toc('highlight','".$new_item_id."');");
- //$objResponse->addScript("update_toc('$mylesson_status','".$new_item_id."');");
- //$objResponse->addScript("update_progress_bar('$mycomplete','$mytotal','$myprogress_mode');");
- $return .= "update_toc('unhighlight','".$current_item."');".
- "update_toc('highlight','".$new_item_id."');".
- "update_toc('$mylesson_status','".$new_item_id."');".
- "update_progress_bar('$mycomplete','$mytotal','$myprogress_mode');";
- $mylp->set_error_msg('');
- $mylp->prerequisites_match(); //check the prerequisites are all complete
- if($debug>1){error_log('Prereq_match() returned '.htmlentities($mylp->error),0);}
- //$objResponse->addScript("update_message_frame('".str_replace("'","\'",htmlentities($mylp->error))."');");
- $return .= "update_message_frame('".str_replace("'","\'",htmlentities($mylp->error))."');";
- $_SESSION['scorm_item_id'] = $new_item_id;//Save the new item ID for the exercise tool to use
- $_SESSION['lpobject'] = serialize($mylp);
- return $return;
- //return $objResponse;
- }
- echo switch_item_details($_GET['lid'],$_GET['uid'],$_GET['vid'],$_GET['iid'],$_GET['next']);
|