/**
  * output tabs
  */
 function setTabs($a_tab)
 {
     global $ilTabs, $ilCtrl, $tpl, $lng, $ilHelp;
     $ilTabs->clearTargets();
     $ilHelp->setScreenIdComponent("skmg_sktr");
     if (is_object($this->node_object)) {
         $sk_id = $this->node_object->getSkillTemplateId();
         $obj_type = ilSkillTreeNode::_lookupType($sk_id);
         if ($obj_type == "sctp") {
             // content
             $ilTabs->addTab("content", $lng->txt("content"), $ilCtrl->getLinkTarget($this, 'listItems'));
         } else {
             // content
             $ilTabs->addTab("content", $lng->txt("skmg_skill_levels"), $ilCtrl->getLinkTarget($this, 'listItems'));
         }
         // properties
         $ilTabs->addTab("properties", $lng->txt("settings"), $ilCtrl->getLinkTarget($this, 'editProperties'));
         // usage
         $this->addUsageTab($ilTabs);
         // back link
         /*
         			$ilCtrl->setParameterByClass("ilskillrootgui", "obj_id",
         				$this->node_object->skill_tree->getRootId());
         			$ilTabs->setBackTarget($lng->txt("obj_skmg"),
         				$ilCtrl->getLinkTargetByClass("ilskillrootgui", "listSkills"));
         			$ilCtrl->setParameterByClass("ilskillrootgui", "obj_id",
         				$_GET["obj_id"]);*/
         $tid = ilSkillTemplateReference::_lookupTemplateId($this->node_object->getId());
         $add = " (" . ilSkillTreeNode::_lookupTitle($tid) . ")";
         parent::setTitleIcon();
         $tpl->setTitle($lng->txt("skmg_sktr") . ": " . $this->node_object->getTitle() . $add);
         $this->setSkillNodeDescription();
         $ilTabs->activateTab($a_tab);
     }
 }
 /**
  * Execute command
  *
  * @access public
  *
  */
 public function executeCommand()
 {
     global $rbacsystem, $ilErr, $ilAccess, $ilTabs;
     $next_class = $this->ctrl->getNextClass($this);
     $cmd = $this->ctrl->getCmd();
     $this->prepareOutput();
     if (!$ilAccess->checkAccess('read', '', $this->object->getRefId())) {
         $ilErr->raiseError($this->lng->txt('no_permission'), $ilErr->WARNING);
     }
     switch ($next_class) {
         case 'ilskillrootgui':
             include_once "./Services/Skill/classes/class.ilSkillRootGUI.php";
             $skrt_gui = new ilSkillRootGUI((int) $_GET["obj_id"], $this);
             $skrt_gui->setParentGUI($this);
             $ret = $this->ctrl->forwardCommand($skrt_gui);
             break;
         case 'ilskillcategorygui':
             $this->tabs_gui->activateTab("skills");
             include_once "./Services/Skill/classes/class.ilSkillCategoryGUI.php";
             $scat_gui = new ilSkillCategoryGUI((int) $_GET["obj_id"]);
             $scat_gui->setParentGUI($this);
             $this->showTree(false, $scat_gui, "listItems");
             $ret = $this->ctrl->forwardCommand($scat_gui);
             break;
         case 'ilbasicskillgui':
             $this->tabs_gui->activateTab("skills");
             include_once "./Services/Skill/classes/class.ilBasicSkillGUI.php";
             $skill_gui = new ilBasicSkillGUI((int) $_GET["obj_id"]);
             $skill_gui->setParentGUI($this);
             $this->showTree(false, $skill_gui, "edit");
             $ret = $this->ctrl->forwardCommand($skill_gui);
             break;
         case 'ilskilltemplatecategorygui':
             $this->tabs_gui->activateTab("skill_templates");
             include_once "./Services/Skill/classes/class.ilSkillTemplateCategoryGUI.php";
             $sctp_gui = new ilSkillTemplateCategoryGUI((int) $_GET["obj_id"]);
             $sctp_gui->setParentGUI($this);
             $this->showTree(true, $sctp_gui, "listItems");
             $ret = $this->ctrl->forwardCommand($sctp_gui);
             break;
         case 'ilbasicskilltemplategui':
             $this->tabs_gui->activateTab("skill_templates");
             include_once "./Services/Skill/classes/class.ilBasicSkillTemplateGUI.php";
             $sktp_gui = new ilBasicSkillTemplateGUI((int) $_GET["obj_id"]);
             $sktp_gui->setParentGUI($this);
             $this->showTree(true, $sktp_gui, "edit");
             $ret = $this->ctrl->forwardCommand($sktp_gui);
             break;
         case 'ilskilltemplatereferencegui':
             $this->tabs_gui->activateTab("skills");
             include_once "./Services/Skill/classes/class.ilSkillTemplateReferenceGUI.php";
             $sktr_gui = new ilSkillTemplateReferenceGUI((int) $_GET["obj_id"]);
             $sktr_gui->setParentGUI($this);
             $this->showTree(false, $sktr_gui, "listItems");
             $ret = $this->ctrl->forwardCommand($sktr_gui);
             break;
         case "ilskillprofilegui":
             $ilTabs->activateTab("profiles");
             include_once "./Services/Skill/classes/class.ilSkillProfileGUI.php";
             $skprof_gui = new ilSkillProfileGUI();
             $ret = $this->ctrl->forwardCommand($skprof_gui);
             break;
         case 'ilpermissiongui':
             $this->tabs_gui->activateTab('permissions');
             include_once "Services/AccessControl/classes/class.ilPermissionGUI.php";
             $perm_gui =& new ilPermissionGUI($this);
             $ret = $this->ctrl->forwardCommand($perm_gui);
             break;
         default:
             if (!$cmd || $cmd == 'view') {
                 $cmd = "editSkills";
             }
             if ($cmd == "showTree") {
                 $this->showTree($_GET["templates_tree"]);
             } else {
                 $this->{$cmd}();
             }
             break;
     }
     return true;
 }