class.ilAdministrationExplorer.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

/*
* Administration Explorer
*
* @author Alex Killing <alex.killing@gmx.de>
* @version $Id$
*
*/

require_once("./Services/UIComponent/Explorer/classes/class.ilExplorer.php");

class ilAdministrationExplorer extends ilExplorer
{
    protected $lng;

    protected $obj_definition;

    protected $rbacsystem;


    public $root_id;
    public $output;
    public $ctrl;
    public function __construct($a_target)
    {
        global $DIC;

        $this->lng = $DIC->language();
        $this->obj_definition = $DIC["objDefinition"];
        $this->rbacsystem = $DIC->rbac()->system();
        $tree = $DIC->repositoryTree();
        $ilCtrl = $DIC->ctrl();
        $lng = $DIC->language();

        $this->ctrl = $ilCtrl;

        parent::__construct($a_target);
        $this->tree = $tree;
        $this->root_id = $this->tree->readRootId();
        $this->order_column = "title";
        $this->setSessionExpandVariable("expand");
        $this->setTitle($lng->txt("overview"));
    }

    public function formatHeader(&$tpl, $a_obj_id, $a_option)
    {
        $lng = $this->lng;
        $objDefinition = $this->obj_definition;
        
        if ($_GET["admin_mode"] == "settings") {
            return;
        }

        $tpl->setCurrentBlock("icon");
        $tpl->setVariable("ICON_IMAGE", ilUtil::getImagePath("icon_root.svg"));
        $tpl->setVariable("TXT_ALT_IMG", $lng->txt("repository"));
        $tpl->parseCurrentBlock();

        $class_name = $objDefinition->getClassName("root");
        $class = strtolower("ilObj" . $class_name . "GUI");
        $this->ctrl->setParameterByClass($class, "ref_id", ROOT_FOLDER_ID);
        $link = $this->ctrl->getLinkTargetByClass($class, "view");

        $tpl->setCurrentBlock("link");
        $tpl->setVariable("TITLE", $lng->txt("repository"));
        $tpl->setVariable("LINK_TARGET", $link);
        $tpl->setVariable("TARGET", " target=\"content\"");
        $tpl->parseCurrentBlock();

        $tpl->setCurrentBlock("element");
        $tpl->parseCurrentBlock();
    }

    public function buildLinkTarget($a_node_id, $a_type)
    {
        $ilCtrl = $this->ctrl;
        $objDefinition = $this->obj_definition;

        if ($a_type == "" || $a_type == "xxx") {
            return;
        }
        if ($_GET["admin_mode"] == "settings" && $a_node_id == ROOT_FOLDER_ID) {
            $this->ctrl->setParameterByClass("iladministrationgui", "ref_id", ROOT_FOLDER_ID);
            $this->ctrl->setParameterByClass("iladministrationgui", "admin_mode", "repository");
            $link = $this->ctrl->getLinkTargetByClass("iladministrationgui", "frameset");
            $this->ctrl->setParameterByClass("iladministrationgui", "admin_mode", "settings");
        } else {
            $class_name = $objDefinition->getClassName($a_type);
            $class = strtolower("ilObj" . $class_name . "GUI");
            $this->ctrl->setParameterByClass($class, "ref_id", $a_node_id);
            $link = $this->ctrl->getLinkTargetByClass($class, "view");
        }
        return $link;
    }
    
    public function buildFrameTarget($a_type, $a_child = 0, $a_obj_id = 0)
    {
        if ($_GET["admin_mode"] == "settings" && $a_child == ROOT_FOLDER_ID) {
            return ilFrameTargetInfo::_getFrame("MainContent");
        } else {
            return $this->frame_target;
        }
    }

    
    public function getImage($a_name, $a_type = "", $a_obj_id = "")
    {
        if ($a_type != "") {
            return ilObject::_getIcon($a_obj_id, "tiny", $a_type);
        }
    
        return parent::getImage($a_name);
    }

    public function isClickable($a_type, $a_ref_id)
    {
        $rbacsystem = $this->rbacsystem;

        return $rbacsystem->checkAccess('read', $a_ref_id);
    }
    
    public function isVisible($a_ref_id, $a_type)
    {
        $rbacsystem = $this->rbacsystem;

        if ($this->tree->getParentId($a_ref_id) == ROOT_FOLDER_ID && $a_type != "adm" &&
            $_GET["admin_mode"] != "repository") {
            return false;
        }

        // these objects may exist due to test cases that didnt clear
        // data properly
        if ($a_type == "" || $a_type == "xxx") {
            return false;
        }
        
        $visible = $rbacsystem->checkAccess('visible', $a_ref_id);
        if ($a_type == "rolf" && $a_ref_id != ROLE_FOLDER_ID) {
            return false;
        }

        return $visible;
    }
    
    public function modifyChilds($a_parent_id, $a_objects)
    {
        $lng = $this->lng;
        $rbacsystem = $this->rbacsystem;
        
        if ($a_parent_id == SYSTEM_FOLDER_ID) {
            $new_objects = array();
            foreach ($a_objects as $object) {
                $new_objects[$object["title"] . ":" . $object["child"]]
                    = $object;
            }

            // add entry for switching to repository admin
            // note: please see showChilds methods which prevents infinite look
            if ($rbacsystem->checkAccess('write', SYSTEM_FOLDER_ID)) {
                $new_objects[$lng->txt("repository_admin") . ":" . ROOT_FOLDER_ID] =
                    array(
                    "tree" => 1,
                    "child" => ROOT_FOLDER_ID,
                    "ref_id" => ROOT_FOLDER_ID,
                    "depth" => 3,
                    "type" => "root",
                    "title" => $lng->txt("repository_admin"),
                    "description" => $lng->txt("repository_admin_desc"),
                    "desc" => $lng->txt("repository_admin_desc"),
                    );
            }
            ksort($new_objects);
            
            return $new_objects;
        }

        return $a_objects;
    }

    public function showChilds($a_parent_id, $a_obj_id)
    {
        
        // prevent infinite loop due to (root folder tree) node
        // that is inserted under system admin folder
        if ($a_parent_id == ROOT_FOLDER_ID) {
            if ($this->rootfolder_shown == true) {
                return false;
            }
            $this->rootfolder_shown = true;
        }

        return true;
    }
    
    public function forceExpanded($a_obj_id)
    {
        if ($a_obj_id == SYSTEM_FOLDER_ID) {
            return true;
        } else {
            return false;
        }
    }
} // END class ilAdministrationExplorer