18                 global 
$ilCtrl, 
$lng, $ilAccess, $ilias, $ilNavigationHistory;
 
   33                 global 
$lng, $ilAccess, 
$tpl, $ilNavigationHistory;
 
   35                 $cmd = $this->ctrl->getCmd();
 
   36                 $next_class = $this->ctrl->getNextClass($this);
 
   37                 if ($next_class == 
"")
 
   39                         $this->ctrl->setCmdClass(
"ilobjexercisegui");
 
   40                         $next_class = $this->ctrl->getNextClass($this);
 
   44                 if ($ilAccess->checkAccess(
"read", 
"", 
$_GET[
"ref_id"]))
 
   46                         $ilNavigationHistory->addItem(
$_GET[
"ref_id"],
 
   47                                 "ilias.php?baseClass=ilExerciseHandlerGUI&cmd=infoScreen&ref_id=".
$_GET[
"ref_id"], 
"exc");
 
   52                         case 'ilobjexercisegui':
 
   53                                 require_once 
"./Modules/Exercise/classes/class.ilObjExerciseGUI.php";
 
   55                                 $this->ctrl->forwardCommand($ex_gui);