/**
  * Get a content object of the page
  *
  * @param string hier ID
  * @param string PC ID
  *
  * @return object page content object
  */
 function &getContentObject($a_hier_id, $a_pc_id = "")
 {
     //echo ":".$a_hier_id.":";
     //echo "Content:".htmlentities($this->getXMLFromDOM()).":<br>";
     //echo "ilPageObject::getContentObject:hierid:".$a_hier_id.":<br>";
     $cont_node =& $this->getContentNode($a_hier_id, $a_pc_id);
     //echo "ilPageObject::getContentObject:nodename:".$cont_node->node_name().":<br>";
     if (!is_object($cont_node)) {
         return false;
     }
     switch ($cont_node->node_name()) {
         case "PageContent":
             $child_node =& $cont_node->first_child();
             //echo "<br>nodename:".$child_node->node_name();
             switch ($child_node->node_name()) {
                 case "Paragraph":
                     require_once "./Services/COPage/classes/class.ilPCParagraph.php";
                     $par =& new ilPCParagraph($this->dom);
                     $par->setNode($cont_node);
                     $par->setHierId($a_hier_id);
                     $par->setPcId($a_pc_id);
                     return $par;
                 case "Table":
                     if ($child_node->get_attribute("DataTable") == "y") {
                         require_once "./Services/COPage/classes/class.ilPCDataTable.php";
                         $tab =& new ilPCDataTable($this->dom);
                         $tab->setNode($cont_node);
                         $tab->setHierId($a_hier_id);
                     } else {
                         require_once "./Services/COPage/classes/class.ilPCTable.php";
                         $tab =& new ilPCTable($this->dom);
                         $tab->setNode($cont_node);
                         $tab->setHierId($a_hier_id);
                     }
                     $tab->setPcId($a_pc_id);
                     return $tab;
                 case "MediaObject":
                     if ($_GET["pgEdMediaMode"] != "") {
                         echo "ilPageObject::error media";
                         exit;
                     }
                     //require_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                     require_once "./Services/COPage/classes/class.ilPCMediaObject.php";
                     $mal_node =& $child_node->first_child();
                     //echo "ilPageObject::getContentObject:nodename:".$mal_node->node_name().":<br>";
                     $id_arr = explode("_", $mal_node->get_attribute("OriginId"));
                     $mob_id = $id_arr[count($id_arr) - 1];
                     // allow deletion of non-existing media objects
                     if (!ilObject::_exists($mob_id) && in_array("delete", $_POST)) {
                         $mob_id = 0;
                     }
                     //$mob =& new ilObjMediaObject($mob_id);
                     $mob = new ilPCMediaObject($this->dom);
                     $mob->readMediaObject($mob_id);
                     //$mob->setDom($this->dom);
                     $mob->setNode($cont_node);
                     $mob->setHierId($a_hier_id);
                     $mob->setPcId($a_pc_id);
                     return $mob;
                 case "List":
                     require_once "./Services/COPage/classes/class.ilPCList.php";
                     $list = new ilPCList($this->dom);
                     $list->setNode($cont_node);
                     $list->setHierId($a_hier_id);
                     $list->setPcId($a_pc_id);
                     return $list;
                 case "FileList":
                     require_once "./Services/COPage/classes/class.ilPCFileList.php";
                     $file_list = new ilPCFileList($this->dom);
                     $file_list->setNode($cont_node);
                     $file_list->setHierId($a_hier_id);
                     $file_list->setPcId($a_pc_id);
                     return $file_list;
                     // note: assessment handling is forwarded to assessment gui classes
                 // note: assessment handling is forwarded to assessment gui classes
                 case "Question":
                     require_once "./Services/COPage/classes/class.ilPCQuestion.php";
                     $pc_question = new ilPCQuestion($this->dom);
                     $pc_question->setNode($cont_node);
                     $pc_question->setHierId($a_hier_id);
                     $pc_question->setPcId($a_pc_id);
                     return $pc_question;
                 case "Section":
                     require_once "./Services/COPage/classes/class.ilPCSection.php";
                     $sec = new ilPCSection($this->dom);
                     $sec->setNode($cont_node);
                     $sec->setHierId($a_hier_id);
                     $sec->setPcId($a_pc_id);
                     return $sec;
                 case "Resources":
                     require_once "./Services/COPage/classes/class.ilPCResources.php";
                     $res = new ilPCResources($this->dom);
                     $res->setNode($cont_node);
                     $res->setHierId($a_hier_id);
                     $res->setPcId($a_pc_id);
                     return $res;
                 case 'LoginPageElement':
                     include_once './Services/COPage/classes/class.ilPCLoginPageElements.php';
                     $res = new ilPCLoginPageElements($this->dom);
                     $res->setNode($cont_node);
                     $res->setHierId($a_hier_id);
                     $res->setPcId($a_pcid);
                     return $res;
                 case "Map":
                     require_once "./Services/COPage/classes/class.ilPCMap.php";
                     $map = new ilPCMap($this->dom);
                     $map->setNode($cont_node);
                     $map->setHierId($a_hier_id);
                     $map->setPcId($a_pc_id);
                     return $map;
                 case "Tabs":
                     require_once "./Services/COPage/classes/class.ilPCTabs.php";
                     $map = new ilPCTabs($this->dom);
                     $map->setNode($cont_node);
                     $map->setHierId($a_hier_id);
                     $map->setPcId($a_pc_id);
                     return $map;
                 case "Plugged":
                     require_once "./Services/COPage/classes/class.ilPCPlugged.php";
                     $plugged = new ilPCPlugged($this->dom);
                     $plugged->setNode($cont_node);
                     $plugged->setHierId($a_hier_id);
                     $plugged->setPcId($a_pc_id);
                     return $plugged;
                     //Page-Layout-Support
                 //Page-Layout-Support
                 case "PlaceHolder":
                     require_once "./Services/COPage/classes/class.ilPCPlaceHolder.php";
                     $placeholder = new ilPCPlaceHolder($this->dom);
                     $placeholder->setNode($cont_node);
                     $placeholder->setHierId($a_hier_id);
                     $placeholder->setPcId($a_pc_id);
                     return $placeholder;
                 case "ContentInclude":
                     require_once "./Services/COPage/classes/class.ilPCContentInclude.php";
                     $inc =& new ilPCContentInclude($this->dom);
                     $inc->setNode($cont_node);
                     $inc->setHierId($a_hier_id);
                     $inc->setPcId($a_pc_id);
                     return $inc;
                 case "InteractiveImage":
                     require_once "./Services/COPage/classes/class.ilPCInteractiveImage.php";
                     $iim = new ilPCInteractiveImage($this->dom);
                     $iim->setNode($cont_node);
                     $iim->setHierId($a_hier_id);
                     $iim->setPcId($a_pc_id);
                     return $iim;
                 case "Profile":
                     require_once "./Services/COPage/classes/class.ilPCProfile.php";
                     $prof = new ilPCProfile($this->dom);
                     $prof->setNode($cont_node);
                     $prof->setHierId($a_hier_id);
                     $prof->setPcId($a_pc_id);
                     return $prof;
                 case "Verification":
                     require_once "./Services/COPage/classes/class.ilPCVerification.php";
                     $vrfc = new ilPCVerification($this->dom);
                     $vrfc->setNode($cont_node);
                     $vrfc->setHierId($a_hier_id);
                     $vrfc->setPcId($a_pc_id);
                     return $vrfc;
                 case "Blog":
                     require_once "./Services/COPage/classes/class.ilPCBlog.php";
                     $blog = new ilPCBlog($this->dom);
                     $blog->setNode($cont_node);
                     $blog->setHierId($a_hier_id);
                     $blog->setPcId($a_pc_id);
                     return $blog;
                 case "QuestionOverview":
                     require_once "./Services/COPage/classes/class.ilPCQuestionOverview.php";
                     $qover = new ilPCQuestionOverview($this->dom);
                     $qover->setNode($cont_node);
                     $qover->setHierId($a_hier_id);
                     $qover->setPcId($a_pc_id);
                     return $qover;
                 case "Skills":
                     require_once "./Services/COPage/classes/class.ilPCSkills.php";
                     $skill = new ilPCSkills($this->dom);
                     $skill->setNode($cont_node);
                     $skill->setHierId($a_hier_id);
                     $skill->setPcId($a_pc_id);
                     return $skill;
             }
             break;
         case "TableData":
             require_once "./Services/COPage/classes/class.ilPCTableData.php";
             $td =& new ilPCTableData($this->dom);
             $td->setNode($cont_node);
             $td->setHierId($a_hier_id);
             return $td;
         case "ListItem":
             require_once "./Services/COPage/classes/class.ilPCListItem.php";
             $td =& new ilPCListItem($this->dom);
             $td->setNode($cont_node);
             $td->setHierId($a_hier_id);
             return $td;
         case "FileItem":
             require_once "./Services/COPage/classes/class.ilPCFileItem.php";
             $file_item =& new ilPCFileItem($this->dom);
             $file_item->setNode($cont_node);
             $file_item->setHierId($a_hier_id);
             return $file_item;
             /*			case "Tab":
             				require_once("./Services/COPage/classes/class.ilPCTab.php");
             				$tab =& new ilPCTab($this->dom);
             				$tab->setNode($cont_node);
             				$tab->setHierId($a_hier_id);
             				return $tab;*/
     }
 }