class.ilLMTOCExplorerGUI.php

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

include_once("./Modules/LearningModule/classes/class.ilLMExplorerGUI.php");

class ilLMTOCExplorerGUI extends ilLMExplorerGUI
{
        protected $lang;
        protected $highlight_node;
        protected $tracker;

        function __construct($a_parent_obj, $a_parent_cmd, ilLMPresentationGUI $a_lm_pres, $a_lang = "-",
                $a_focus_id = 0)
        {
                $this->lm_pres = $a_lm_pres;
                $this->lm = $this->lm_pres->lm;
                $exp_id = (!$this->getOfflineMode() && $this->lm->getProgressIcons())
                        ? "ilLMProgressTree"
                        : "";
                parent::__construct($a_parent_obj, $a_parent_cmd, $this->lm, $exp_id);
                $this->lm_set = new ilSetting("lm");
                $this->lang = $a_lang;
                if ($a_focus_id > 0)
                {
                        $this->setSecondaryHighlightedNodes(array($a_focus_id));
                }
                if ($this->lm->getTOCMode() != "pages")
                {
                        $this->setTypeWhiteList(array("st", "du"));
                }
                $this->focus_id = $a_focus_id;
        }

        function getRootNode()
        {
                $root_id = $this->getTree()->readRootId();
                if ($this->focus_id > 0 && $this->getTree()->isInTree($this->focus_id) &&
                        ilLMObject::_lookupType($this->focus_id) == "st")
                {
//                      $root_id = $this->focus_id;
                }
                return $this->getTree()->getNodeData($root_id);
        }

        function setTracker($a_val)
        {
                $this->tracker = $a_val;
        }

        function getTracker()
        {
                return $this->tracker;
        }

        function setHighlightNode($a_val)
        {
                $this->highlight_node = $a_val;
        }

        function getHighlightNode()
        {
                return $this->highlight_node;
        }

        function isNodeHighlighted($a_node)
        {
                if ($a_node["child"] == $this->getHighlightNode())
                {
                        return true;
                }
                return false;
        }

        function getNodeContent($a_node)
        {
                if ($a_node["type"] == "st")
                {
                        return ilStructureObject::_getPresentationTitle($a_node["child"],
                                $this->lm->isActiveNumbering(), false, $this->lm->getId(), $this->lang);
                }
                else if ($a_node["type"] == "pg")
                {
                        return ilLMPageObject::_getPresentationTitle($a_node["child"],
                                $this->lm->getPageHeader(), $this->lm->isActiveNumbering(),
                                $this->lm_set->get("time_scheduled_page_activation"), true, $this->lm->getId(), $this->lang);
                }
                else if ($a_node["child"] == $this->getNodeId($this->getRootNode()))
                {
                        return $this->lm->getTitle();
                }

                if ($a_node["type"] == "pg")
                {
                        return ilLMPageObject::_getPresentationTitle($a_node["child"],
                                $this->lm->getPageHeader(), $this->lm->isActiveNumbering(),
                                $this->lm_set->get("time_scheduled_page_activation"), true, $this->lm->getId(), $this->lang);
                }

                return $a_node["title"];
        }


        function getNodeIcon($a_node)
        {
                // overwrite chapter icons with lp info?
                if(!$this->getOfflineMode() && $a_node["type"] == "st")
                {
                        $icon = $this->checkLPIcon($a_node["child"]);
                        if ($icon != "")
                        {
                                return $icon;
                        }
                }

                // use progress icons (does not depend on lp mode)
                if(!$this->getOfflineMode() && $this->lm->getProgressIcons())
                {
                        return $this->tracker->getIconForLMObject($a_node, $this->highlight_node);
                }

                include_once("./Modules/LearningModule/classes/class.ilLMObject.php");

                if ($a_node["type"] == "du")
                {
                        $a_node["type"] = "lm";
                }
                $a_name = "icon_".$a_node["type"].".svg";
                if ($a_node["type"] == "pg")
                {
                        include_once("./Modules/LearningModule/classes/class.ilLMPage.php");
                        $lm_set = new ilSetting("lm");
                        $active = ilLMPage::_lookupActive($a_node["child"], $this->lm->getType(),
                                $lm_set->get("time_scheduled_page_activation"));

                        // is page scheduled?
                        $img_sc = ($lm_set->get("time_scheduled_page_activation") &&
                                ilLMPage::_isScheduledActivation($a_node["child"], $this->lm->getType()) && !$active
                                && !$this->getOfflineMode())
                                ? "_sc"
                                : "";

                        $a_name = "icon_pg".$img_sc.".svg";

                        if (!$active && !$this->getOfflineMode())
                        {
                                $a_name = "icon_pg_d".$img_sc.".svg";
                        }
                }

                return ilUtil::getImagePath($a_name, false, "output", $this->getOfflineMode());
        }

        function isNodeClickable($a_node)
        {
                global $ilUser;

                $orig_node_id = $a_node["child"];

                // if navigation is restricted based on correct answered questions
                // check if we have preceeding pages including unsanswered/incorrect answered questions
                if (!$this->getOfflineMode())
                {
                        if ($this->lm->getRestrictForwardNavigation())
                        {
                                if ($this->getTracker()->hasPredIncorrectAnswers($orig_node_id))
                                {
                                        return false;
                                }
                        }
                }

                if ($a_node["type"] == "st")
                {
                        if (!$this->getOfflineMode())
                        {
                                if ($this->lm->getTOCMode() != "pages")
                                {
                                        $a_node = $this->getTree()->fetchSuccessorNode($a_node["child"], "pg");
                                }
                                else
                                {
                                        // faster, but needs pages to be in explorer
                                        $a_node = $this->getSuccessorNode($a_node["child"], "pg");
                                }
                                if ($a_node["child"] == 0)
                                {
                                        return false;
                                }
                        }
                        else
                        {
                                // get next activated page
                                $found = false;
                                while (!$found)
                                {
                                        if ($this->lm->getTOCMode() != "pages")
                                        {
                                                $a_node = $this->getTree()->fetchSuccessorNode($a_node["child"], "pg");
                                        }
                                        else
                                        {
                                                $a_node = $this->getSuccessorNode($a_node["child"], "pg");
                                        }
                                        include_once("./Modules/LearningModule/classes/class.ilLMPage.php");
                                        $active = ilLMPage::_lookupActive($a_node["child"], $this->lm->getType(),
                                                $this->lm_set->get("time_scheduled_page_activation"));

                                        if ($a_node["child"] > 0 && !$active)
                                        {
                                                $found = false;
                                        }
                                        else
                                        {
                                                $found = true;
                                        }
                                }
                                if ($a_node["child"] <= 0)
                                {
                                        return false;
                                }
                                else
                                {
                                        $path = $this->getTree()->getPathId($a_node["child"]);
                                        if (!in_array($orig_node_id, $path))
                                        {
                                                return false;
                                        }
                                }
                        }
                }

                if ($a_node["type"] == "pg")
                {
                        // check public area mode
                        include_once("./Modules/LearningModule/classes/class.ilLMObject.php");
                        include_once 'Services/Payment/classes/class.ilPaymentObject.php';
                        if (($ilUser->getId() == ANONYMOUS_USER_ID ||
                                        ilPaymentObject::_requiresPurchaseToAccess((int)$this->lm->getRefId())) &&
                                !ilLMObject::_isPagePublic($a_node["child"], true))
                        {
                                return false;
                        }
                }

                return true;

        }


        function getNodeIconAlt($a_node)
        {
        }
        
        function getNodeHref($a_node)
        {
                if (!$this->getOfflineMode())
                {
                        return $this->lm_pres->getLink($this->lm->getRefId(), "", $a_node["child"]);
                        //return parent::buildLinkTarget($a_node_id, $a_type);
                }
                else
                {
                        if ($a_node["type"] != "pg")
                        {
                                // get next activated page
                                $found = false;
                                while (!$found)
                                {
                                        $a_node = $this->getTree()->fetchSuccessorNode($a_node["child"], "pg");
                                        include_once("./Modules/LearningModule/classes/class.ilLMPage.php");
                                        $active = ilLMPage::_lookupActive($a_node["child"], $this->lm->getType(),
                                                $this->lm_set->get("time_scheduled_page_activation"));

                                        if ($a_node["child"] > 0 && !$active)
                                        {
                                                $found = false;
                                        }
                                        else
                                        {
                                                $found = true;
                                        }
                                }
                        }
                        include_once("./Modules/LearningModule/classes/class.ilLMPageObject.php");
                        if ($nid = ilLMPageObject::getExportId($this->lm->getId(), $a_node["child"]))
                        {
                                return "lm_pg_".$nid.".html";
                        }
                        return "lm_pg_".$a_node["child"].".html";
                }

        }

        function isNodeVisible($a_node)
        {
                include_once("./Modules/LearningModule/classes/class.ilLMTracker.php");
                return ilLMTracker::_isNodeVisible($a_node);
        }
}

?>