class.ilLMExplorerGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("./Services/UIComponent/Explorer2/classes/class.ilTreeExplorerGUI.php");
include_once("./Modules/LearningModule/classes/class.ilStructureObject.php");
include_once("./Modules/LearningModule/classes/class.ilLMObject.php");

class ilLMExplorerGUI extends ilTreeExplorerGUI
{
        protected $lp_cache; // [array]
        protected $cnt_lmobj; // number of items (chapters and pages) in the explorer

        public function __construct($a_parent_obj, $a_parent_cmd, ilObjContentObject $a_lm, $a_id = "")
        {
                $this->lm = $a_lm;

                include_once("./Modules/LearningModule/classes/class.ilLMTree.php");
                $tree = ilLMTree::getInstance($this->lm->getId());

//echo "+".$tree->isCacheUsed()."+";

//              $tree = new ilTree($this->lm->getId());
//              $tree->setTableNames('lm_tree','lm_data');
//              $tree->setTreeTablePK("lm_id");

                include_once("./Modules/LearningModule/classes/class.ilLMObject.php");
                $this->cnt_lmobj = ilLMObject::preloadDataByLM($this->lm->getId());

                include_once("./Services/COPage/classes/class.ilPageObject.php");
                ilPageObject::preloadActivationDataByParentId($this->lm->getId());

                if ($a_id == "")
                {
                        $a_id = "lm_exp";

                        // this does not work, since it is not set yet
                        if ($this->getOfflineMode())
                        {
                                $a_id = "lm_exp_off";
                        }
                }

                parent::__construct($a_id, $a_parent_obj, $a_parent_cmd, $tree);
                
                $this->setSkipRootNode(false);
                $this->setAjax(false);
                $this->setPreloadChilds(true);

                if ((int) $_GET["obj_id"] > 0)
                {
                        $this->setPathOpen((int) $_GET["obj_id"]);
                }
        }

        function beforeRendering()
        {
                if ($this->cnt_lmobj > 200 && !$this->getOfflineMode())
                {
                        $this->setAjax(true);
                }
        }


        function getNodeContent($a_node)
        {
                if ($a_node["child"] == $this->getNodeId($this->getRootNode()))
                {
                        return $this->lm->getTitle();
                }

                $lang = ($_GET["transl"] != "")
                        ? $_GET["transl"]
                        : "-";
                return ilLMObject::_getPresentationTitle($a_node, IL_PAGE_TITLE,
                        $this->lm->isActiveNumbering(), false, false, $this->lm->getId(), $lang);
        }
        
        function isNodeHighlighted($a_node)
        {
                if ($a_node["child"] == $_GET["obj_id"] ||
                        ($_GET["obj_id"] == "" && $a_node["child"] == $this->getNodeId($this->getRootNode())))
                {
                        return true;
                }
                return false;
        }

        protected function checkLPIcon($a_id)
        {
                global $ilUser;

                // do it once for all chapters
                if($this->lp_cache[$this->lm->getId()] === null)
                {
                        $this->lp_cache[$this->lm->getId()] = false;

                        include_once './Services/Tracking/classes/class.ilLearningProgressAccess.php';
                        if(ilLearningProgressAccess::checkAccess($this->lm->getRefId()))
                        {
                                $info = null;

                                include_once './Services/Object/classes/class.ilObjectLP.php';
                                $olp = ilObjectLP::getInstance($this->lm->getId());
                                if($olp->getCurrentMode() == ilLPObjSettings::LP_MODE_COLLECTION_MANUAL ||
                                        $olp->getCurrentMode() == ilLPObjSettings::LP_MODE_COLLECTION_TLT)
                                {
                                        include_once "Services/Tracking/classes/class.ilLPStatusFactory.php";
                                        $class = ilLPStatusFactory::_getClassById($this->lm->getId(), $olp->getCurrentMode());
                                        $info = $class::_getStatusInfo($this->lm->getId());
                                }

                                // parse collection items
                                if(is_array($info["items"]))
                                {
                                        foreach($info["items"] as $item_id)
                                        {
                                                $status = ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM;
                                                if(is_array($info["in_progress"][$item_id]) &&
                                                        in_array($ilUser->getId(), $info["in_progress"][$item_id]))
                                                {
                                                        $status = ilLPStatus::LP_STATUS_IN_PROGRESS_NUM;
                                                }
                                                else if(is_array($info["completed"][$item_id]) &&
                                                        in_array($ilUser->getId(), $info["completed"][$item_id]))
                                                {
                                                        $status = ilLPStatus::LP_STATUS_COMPLETED_NUM;
                                                }
                                                $this->lp_cache[$this->lm->getId()][$item_id] =$status;
                                        }
                                }
                        }

                        include_once './Services/Tracking/classes/class.ilLearningProgressBaseGUI.php';
                }

                if(is_array($this->lp_cache[$this->lm->getId()]) &&
                        isset($this->lp_cache[$this->lm->getId()][$a_id]))
                {
                        return ilLearningProgressBaseGUI::_getImagePathForStatus($this->lp_cache[$this->lm->getId()][$a_id]);
                }

                return "";
        }

}

?>