class.ilCourseContentGUI.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilCourseContentGUI
{
    public $container_gui;
    public $container_obj;
    public $course_obj;

    public $tpl;
    public $ctrl;
    public $lng;
    public $tabs_gui;

    public function __construct($container_gui_obj)
    {
        global $tpl,$ilCtrl,$lng,$ilObjDataCache,$ilTabs;

        $this->tpl = $tpl;
        $this->ctrl = $ilCtrl;
        $this->lng = $lng;
        $this->lng->loadLanguageModule('crs');
        $this->tabs_gui = $ilTabs;

        $this->container_gui =&$container_gui_obj;
        $this->container_obj =&$this->container_gui->object;

        $this->__initCourseObject();
    }

    public function executeCommand()
    {
        global $ilAccess, $ilErr, $ilTabs, $ilCtrl;

        if (!$ilAccess->checkAccess('read', '', $this->container_obj->getRefId())) {
            $ilErr->raiseError($this->lng->txt('msg_no_perm_read'), $ilErr->WARNING);
        }
        
        // Handle timings view
        $_SESSION['crs_timings'] = true;

        $this->__setSubTabs();
        $this->tabs_gui->setTabActive('view_content');
        $cmd = $this->ctrl->getCmd();

        switch ($this->ctrl->getNextClass($this)) {
            case 'ilcoursearchivesgui':
                $this->__forwardToArchivesGUI();
                break;

            case "ilcolumngui":
                $ilCtrl->saveParameterByClass("ilcolumngui", "col_return");
                $ilTabs->setSubTabActive("crs_content");
                $this->view();
                break;

            default:
                if (!$this->__checkStartObjects()) {
                    $this->showStartObjects();
                    break;
                }

                // forward to objective presentation
                if ((!$this->is_tutor and
                   $this->container_obj->getType() == 'crs' and
                   $this->container_obj->enabledObjectiveView()) ||
                   $_GET["col_return"] == "objectives") {
                    $this->use_objective_presentation = true;
                    $this->view();
                    //$this->__forwardToObjectivePresentation();
                    break;
                }


                if (!$cmd) {
                    $cmd = $this->__getDefaultCommand();
                }
                $this->$cmd();
                break;
        }
    }

    public function __getDefaultCommand()
    {
        global $ilAccess;

        // edit timings if panel is on
        if ($_SESSION['crs_timings_panel'][$this->course_obj->getId()]) {
            return 'editTimings';
        }
        if ($ilAccess->checkAccess('write', '', $this->container_obj->getRefId())) {
            return 'view';
        }
        if ($this->container_obj->getType() == 'crs' and
           $this->course_obj->getViewMode() == IL_CRS_VIEW_TIMING) {
            return 'editUserTimings';
        }
        return 'view';
    }

    public function __checkStartObjects()
    {
        include_once './Modules/Course/classes/class.ilCourseStart.php';

        global $ilAccess,$ilUser;

        if ($ilAccess->checkAccess('write', '', $this->course_obj->getRefId())) {
            return true;
        }
        $this->start_obj = new ilCourseStart($this->course_obj->getRefId(), $this->course_obj->getId());
        if (count($this->start_obj->getStartObjects()) and !$this->start_obj->allFullfilled($ilUser->getId())) {
            return false;
        }
        return true;
    }

    public function showStartObjects()
    {
        include_once './Modules/Course/classes/class.ilCourseLMHistory.php';
        include_once './Services/Repository/classes/class.ilRepositoryExplorer.php';
        include_once './Services/Link/classes/class.ilLink.php';

        global $rbacsystem,$ilias,$ilUser,$ilAccess,$ilObjDataCache;

        $this->tabs_gui->setSubTabActive('crs_content');

        $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.crs_start_view.html", 'Modules/Course');
        $this->tpl->setVariable("INFO_STRING", $this->lng->txt('crs_info_start'));
        $this->tpl->setVariable("TBL_TITLE_START", $this->lng->txt('crs_table_start_objects'));
        $this->tpl->setVariable("HEADER_NR", $this->lng->txt('crs_nr'));
        $this->tpl->setVariable("HEADER_DESC", $this->lng->txt('description'));
        $this->tpl->setVariable("HEADER_EDITED", $this->lng->txt('crs_objective_accomplished'));


        $lm_continue = new ilCourseLMHistory($this->course_obj->getRefId(), $ilUser->getId());
        $continue_data = $lm_continue->getLMHistory();

        $counter = 0;
        foreach ($this->start_obj->getStartObjects() as $start) {
            $obj_id = $ilObjDataCache->lookupObjId($start['item_ref_id']);
            $ref_id = $start['item_ref_id'];
            $type = $ilObjDataCache->lookupType($obj_id);

            $conditions_ok = ilConditionHandler::_checkAllConditionsOfTarget($ref_id, $obj_id);

            $obj_link = ilLink::_getLink($ref_id, $type);
            $obj_frame = ilRepositoryExplorer::buildFrameTarget($type, $ref_id, $obj_id);
            $obj_frame = $obj_frame ? $obj_frame : '';

            // Tmp fix for tests
            $obj_frame = $type == 'tst' ? '' : $obj_frame;

            $contentObj = false;

            if ($ilAccess->checkAccess('read', '', $ref_id)) {
                $this->tpl->setCurrentBlock("start_read");
                $this->tpl->setVariable("READ_TITLE_START", $ilObjDataCache->lookupTitle($obj_id));
                $this->tpl->setVariable("READ_TARGET_START", $obj_frame);
                $this->tpl->setVariable("READ_LINK_START", $obj_link . '&crs_show_result=' . $this->course_obj->getRefId());
                $this->tpl->parseCurrentBlock();
            } else {
                $this->tpl->setCurrentBlock("start_visible");
                $this->tpl->setVariable("VISIBLE_LINK_START", $ilObjDataCache->lookupTitle($obj_id));
                $this->tpl->parseCurrentBlock();
            }

            // CONTINUE LINK
            if (isset($continue_data[$ref_id])) {
                $this->tpl->setCurrentBlock("link");
                $this->tpl->setVariable("LINK_HREF", ilLink::_getLink($ref_id, '', array('obj_id',
                                                                                      $continue_data[$ref_id]['lm_page_id'])));
                #$this->tpl->setVariable("CONTINUE_LINK_TARGET",$target);
                $this->tpl->setVariable("LINK_NAME", $this->lng->txt('continue_work'));
                $this->tpl->parseCurrentBlock();
            }

            // add to desktop link
            if (!$ilUser->isDesktopItem($ref_id, $type) and
               $this->course_obj->getAboStatus()) {
                if ($ilAccess->checkAccess('read', '', $ref_id)) {
                    $this->tpl->setCurrentBlock("link");
                    $this->ctrl->setParameterByClass(get_class($this->container_gui), 'item_ref_id', $ref_id);
                    $this->ctrl->setParameterByClass(get_class($this->container_gui), 'item_id', $ref_id);
                    $this->ctrl->setParameterByClass(get_class($this->container_gui), 'type', $type);

                    $this->tpl->setVariable("LINK_HREF", $this->ctrl->getLinkTarget($this->container_gui, 'addToDesk'));
                    $this->tpl->setVariable("LINK_NAME", $this->lng->txt("to_desktop"));
                    $this->tpl->parseCurrentBlock();
                }
            } elseif ($this->course_obj->getAboStatus()) {
                $this->tpl->setCurrentBlock("link");
                $this->ctrl->setParameterByClass(get_class($this->container_gui), 'item_ref_id', $ref_id);
                $this->ctrl->setParameterByClass(get_class($this->container_gui), 'item_id', $ref_id);
                $this->ctrl->setParameterByClass(get_class($this->container_gui), 'type', $type);

                $this->tpl->setVariable("LINK_HREF", $this->ctrl->getLinkTarget($this->container_gui, 'removeFromDesk'));
                $this->tpl->setVariable("LINK_NAME", $this->lng->txt("unsubscribe"));
                $this->tpl->parseCurrentBlock();
            }


            // Description
            if (strlen($ilObjDataCache->lookupDescription($obj_id))) {
                $this->tpl->setCurrentBlock("start_description");
                $this->tpl->setVariable("DESCRIPTION_START", $ilObjDataCache->lookupDescription($obj_id));
                $this->tpl->parseCurrentBlock();
            }


            if ($this->start_obj->isFullfilled($ilUser->getId(), $ref_id)) {
                $accomplished = 'accomplished';
                $icon = ilUtil::getImagePath("icon_ok.svg");
            } else {
                $accomplished = 'not_accomplished';
                $icon = ilUtil::getImagePath("icon_not_ok.svg");
            }
            $this->tpl->setCurrentBlock("start_row");
            $this->tpl->setVariable("EDITED_IMG", $icon);
            $this->tpl->setVariable("EDITED_ALT", $this->lng->txt('crs_objective_' . $accomplished));
            $this->tpl->setVariable("ROW_CLASS", 'option_value');
            $this->tpl->setVariable("ROW_CLASS_CENTER", 'option_value_center');
            $this->tpl->setVariable("OBJ_NR_START", ++$counter . '.');
            $this->tpl->parseCurrentBlock();
        }
        return true;
    }

    public function view()
    {
        // BEGIN ChangeEvent: record read event.
        require_once('Services/Tracking/classes/class.ilChangeEvent.php');
        global $ilUser;
        $obj_id = ilObject::_lookupObjId($this->container_obj->getRefId());
        ilChangeEvent::_recordReadEvent(
            $this->container_obj->getType(),
            $this->container_obj->getRefId(),
            $obj_id,
            $ilUser->getId()
        );
        // END ChangeEvent: record read event.
        
        $this->getCenterColumnHTML();
        
        if (!$this->no_right_column) {
            $this->tpl->setRightContent($this->getRightColumnHTML());
        }
    }

    public function getRightColumnHTML()
    {
        global $ilUser, $lng, $ilCtrl, $ilAccess;

        $ilCtrl->saveParameterByClass("ilcolumngui", "col_return");

        $obj_id = ilObject::_lookupObjId($this->container_obj->getRefId());
        $obj_type = ilObject::_lookupType($obj_id);

        include_once("Services/Block/classes/class.ilColumnGUI.php");
        $column_gui = new ilColumnGUI($obj_type, IL_COL_RIGHT);

        if ($column_gui->getScreenMode() == IL_SCREEN_FULL) {
            return "";
        }

        $this->setColumnSettings($column_gui);
        
        if ($ilCtrl->getNextClass() == "ilcolumngui" &&
            $column_gui->getCmdSide() == IL_COL_RIGHT &&
            $column_gui->getScreenMode() == IL_SCREEN_SIDE) {
            $html = $ilCtrl->forwardCommand($column_gui);
        } else {
            if (!$ilCtrl->isAsynch()) {
                $html = $ilCtrl->getHTML($column_gui);
            }
        }

        return $html;
    }

    public function setColumnSettings($column_gui)
    {
        global $ilAccess, $lng;
        
        $column_gui->setRepositoryMode(true);
        $column_gui->setEnableEdit(false);
        $column_gui->setBlockProperty(
            "news",
            "title",
            $lng->txt("crs_news")
        );
        
        include_once "Services/Object/classes/class.ilObjectActivation.php";
        $grouped_items = array();
        foreach (ilObjectActivation::getItems($this->container_obj->getRefId()) as $item) {
            $grouped_items[$item["type"]][] = $item;
        }
        
        $column_gui->setRepositoryItems($grouped_items);
        if ($ilAccess->checkAccess("write", "", $this->container_obj->getRefId())) {
            $column_gui->setEnableEdit(true);
        }
        
        // Allow movement of blocks for tutors
        if ($this->is_tutor &&
            $this->container_gui->isActiveAdministrationPanel()) {
            $column_gui->setEnableMovement(true);
        }
        
        // Configure Settings, if administration panel is on
        if ($this->is_tutor) {
            $column_gui->setBlockProperty("news", "settings", true);
            //$column_gui->setBlockProperty("news", "public_notifications_option", true);
            $column_gui->setBlockProperty("news", "default_visibility_option", true);
            $column_gui->setBlockProperty("news", "hide_news_block_option", true);
        }
        
        if ($this->container_gui->isActiveAdministrationPanel()) {
            $column_gui->setAdminCommands(true);
        }
    }

    
    public function __forwardToColumnGUI()
    {
        global $ilCtrl, $ilAccess;
        
        include_once("Services/Block/classes/class.ilColumnGUI.php");

        $obj_id = ilObject::_lookupObjId($this->container_obj->getRefId());
        $obj_type = ilObject::_lookupType($obj_id);

        if (!$ilCtrl->isAsynch()) {
            //if ($column_gui->getScreenMode() != IL_SCREEN_SIDE)
            if (ilColumnGUI::getScreenMode() != IL_SCREEN_SIDE) {
                // right column wants center
                if (ilColumnGUI::getCmdSide() == IL_COL_RIGHT) {
                    $column_gui = new ilColumnGUI($obj_type, IL_COL_RIGHT);
                    $this->setColumnSettings($column_gui);
                    $html = $ilCtrl->forwardCommand($column_gui);
                }
                // left column wants center
                if (ilColumnGUI::getCmdSide() == IL_COL_LEFT) {
                    $column_gui = new ilColumnGUI($obj_type, IL_COL_LEFT);
                    $this->setColumnSettings($column_gui);
                    $html = $ilCtrl->forwardCommand($column_gui);
                }
            } else {
                {
                    $this->getDefaultView();
                }
            }
        }
        
        return $html;
    }

    public function editTimings()
    {
        global $ilAccess,$ilErr;

        include_once 'Services/MetaData/classes/class.ilMDEducational.php';
        include_once './Services/Link/classes/class.ilLink.php';

        $this->lng->loadLanguageModule('meta');

        if (!$ilAccess->checkAccess('write', '', $this->container_obj->getRefId())) {
            $ilErr->raiseError($this->lng->txt('msg_no_perm_write'), $ilErr->WARNING);
        }
        $this->__showTimingsPanel();
        $this->tabs_gui->setSubTabActive('timings_timings');

        include_once 'Services/Object/classes/class.ilObjectActivation.php';
        $this->cont_arr = ilObjectActivation::getTimingsAdministrationItems($this->container_obj->getRefId());

        $this->tpl->addBlockfile('ADM_CONTENT', 'adm_content', 'tpl.crs_edit_items.html', 'Modules/Course');
        $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
        $this->tpl->setVariable("HEADER_IMG", ilUtil::getImagePath('icon_crs.svg'));
        $this->tpl->setVariable("HEADER_ALT", $this->lng->txt('crs_materials'));
        $this->tpl->setVariable("BLOCK_HEADER_CONTENT", $this->lng->txt('edit_timings_list'));
        $this->tpl->setVariable("TXT_TITLE", $this->lng->txt('title'));


        $this->tpl->setVariable("TXT_DURATION", $this->lng->txt('crs_timings_time_frame'));
        $this->tpl->setVariable("TXT_INFO_DURATION", $this->lng->txt('crs_timings_in_days'));

        $this->tpl->setVariable("TXT_START_END", $this->lng->txt('crs_timings_short_start_end'));
        $this->tpl->setVariable("TXT_INFO_START_END", $this->lng->txt('crs_timings_start_end_info'));

        $this->tpl->setVariable("TXT_CHANGEABLE", $this->lng->txt('crs_timings_short_changeable'));

        $this->tpl->setVariable("TXT_INFO_LIMIT", $this->lng->txt('crs_timings_from_until'));
        $this->tpl->setVariable("TXT_LIMIT", $this->lng->txt('crs_timings_short_limit_start_end'));
        $this->tpl->setVariable("TXT_ACTIVE", $this->lng->txt('crs_timings_short_active'));
        $this->tpl->setVariable("TXT_INFO_ACTIVE", $this->lng->txt('crs_timings_info_active'));

        $counter = 0;
        foreach ($this->cont_arr as $item) {
            if ($item['type'] == 'itgr') {
                continue;
            }
            $item = $this->__loadFromPost($item);
            $item_prefix = "item[$item[ref_id]]";
            $item_change_prefix = "item_change[$item[ref_id]]";
            $item_active_prefix = "item_active[$item[ref_id]]";

            if ($item['type'] == 'grp' or
               $item['type'] == 'fold') {
                $this->tpl->setVariable("TITLE_LINK", ilLink::_getLink($item['ref_id'], $item['type']));
                $this->tpl->setVariable("TITLE_FRAME", ilFrameTargetInfo::_getFrame('MainContent', $item['type']));
                $this->tpl->setVariable("TITLE_LINK_NAME", $item['title']);
            } else {
                if (!$item['title'] &&
                    $item['type'] == 'sess') {
                    include_once('./Modules/Session/classes/class.ilSessionAppointment.php');
                    $app_info = ilSessionAppointment::_lookupAppointment(ilObject::_lookupObjId($item["ref_id"]));
                    $item['title'] = ilSessionAppointment::_appointmentToString($app_info['start'], $app_info['end'], $app_info['fullday']);
                }
                
                $this->tpl->setVariable("TITLE", $item['title']);
            }

            if (strlen($item['description'])) {
                $this->tpl->setCurrentBlock("item_description");
                $this->tpl->setVariable("DESC", $item['description']);
                $this->tpl->parseCurrentBlock();
            }

            if ($tlt = ilMDEducational::_getTypicalLearningTimeSeconds($item['obj_id'])) {
                $this->tpl->setCurrentBlock("tlt");
                $this->tpl->setVariable("TXT_TLT", $this->lng->txt('meta_typical_learning_time'));
                $this->tpl->setVariable("TLT_VAL", ilDatePresentation::secondsToString($tlt));
                $this->tpl->parseCurrentBlock();
            }

            $this->tpl->setCurrentBlock("container_standard_row");

            // Suggested
            if (is_array($_POST['item']["$item[ref_id]"]['sug_start'])) {
                $start = $this->__toUnix($_POST['item']["$item[ref_id]"]['sug_start']);
            } else {
                $start = $item['suggestion_start'];
            }
            $end = $item['suggestion_end'];
            $date = $this->__prepareDateSelect($start);
            $this->tpl->setVariable(
                "SUG_START",
                ilUtil::makeDateSelect(
                                        $item_prefix . "[sug_start]",
                                        $date['y'],
                                        $date['m'],
                                        $date['d'],
                                        date('Y', time()),
                                        false
                                    )
            );

            $this->tpl->setVariable("NAME_DURATION_A", $item_prefix . "[duration_a]");
            if (isset($_POST['item']["$item[ref_id]"]['duration_a'])) {
                $this->tpl->setVariable("VAL_DURATION_A", abs($_POST['item']["$item[ref_id]"]['duration_a']));
            } else {
                $this->tpl->setVariable("VAL_DURATION_A", intval(($end-$start)/(60*60*24)));
            }

            $this->tpl->setVariable('SUG_END', ilDatePresentation::formatDate(new ilDate($item['suggestion_end'], IL_CAL_UNIX)));

            // Limit
            if (is_array($_POST['item']["$item[ref_id]"]['lim_end'])) {
                $end = $this->__toUnix($_POST['item']["$item[ref_id]"]['lim_end']);
            } else {
                $end = $item['latest_end'];
            }

            $date = $this->__prepareDateSelect($end);
            $this->tpl->setVariable(
                "LIM_END",
                ilUtil::makeDateSelect(
                                        $item_prefix . "[lim_end]",
                                        $date['y'],
                                        $date['m'],
                                        $date['d'],
                                        date('Y', time()),
                                        false
                                    )
            );

            $this->tpl->setVariable("NAME_CHANGE", $item_change_prefix . "[change]");
            $this->tpl->setVariable("NAME_ACTIVE", $item_active_prefix . "[active]");

            if (isset($_POST['item'])) {
                $change = $_POST['item_change']["$item[ref_id]"]['change'];
                $active = $_POST['item_active']["$item[ref_id]"]['active'];
            } else {
                $change = $item['changeable'];
                $active = ($item['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING);
            }

            $this->tpl->setVariable("CHECKED_ACTIVE", $active ? 'checked="checked"' : '');
            $this->tpl->setVariable("CHECKED_CHANGE", $change ? 'checked="checked"' : '');

            if (isset($this->failed["$item[ref_id]"])) {
                $this->tpl->setVariable("ROWCLASS", 'tblrowmarked');
            } else {
                $this->tpl->setVariable("ROWCLASS", ilUtil::switchColor($counter++, 'tblrow1', 'tblrow2'));
            }
            $this->tpl->parseCurrentBlock();
        }

        // Select all
        $this->tpl->setVariable("CHECKCLASS", ilUtil::switchColor($counter++, 'tblrow1', 'tblrow2'));
        $this->tpl->setVariable("SELECT_ALL", $this->lng->txt('select_all'));

        $this->tpl->setVariable("BTN_SAVE", $this->lng->txt('save'));
        $this->tpl->setVariable("BTN_CANCEL", $this->lng->txt('cancel'));
    }

    public function __showUserAcceptanceTable()
    {
        global $ilUser;

        include_once 'Modules/Course/classes/Timings/class.ilTimingAccepted.php';
        $accept_obj = new ilTimingAccepted($this->course_obj->getId(), $ilUser->getId());
        
        include_once('Services/Form/classes/class.ilPropertyFormGUI.php');
        $form = new ilPropertyFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this, 'saveAcceptance'));
        $form->setTitle($this->lng->txt('timing_accept_table'));
        
        $accept = new ilCheckboxInputGUI($this->lng->txt('timing_user_accept'), "accepted");
        $accept->setChecked($accept_obj->isAccepted());
        $form->addItem($accept);
        
        $remark = new ilTextAreaInputGUI($this->lng->txt('timing_remark'), "remark");
        $remark->setValue($accept_obj->getRemark());
        $form->addItem($remark);
        
        $tutor = new ilCheckboxInputGUI($this->lng->txt('timing_tutor_visible'), "tutor");
        $tutor->setChecked($accept_obj->isVisible());
        $form->addItem($tutor);
        
        $form->addCommandButton('saveAcceptance', $this->lng->txt('save'));
        $this->tpl->setVariable("FORM", $form->getHTML());
    }
    
    public function saveAcceptance()
    {
        global $ilUser;

        include_once 'Modules/Course/classes/Timings/class.ilTimingAccepted.php';
        $accept_obj = new ilTimingAccepted($this->course_obj->getId(), $ilUser->getId());

        $accept_obj->setRemark(ilUtil::stripSlashes($_POST['remark']));
        $accept_obj->accept($_POST['accepted']);
        $accept_obj->setVisible($_POST['tutor']);
        $accept_obj->update();
        ilUtil::sendSuccess($this->lng->txt('settings_saved'));
        $this->editUserTimings();
    }

    public function editUserTimings()
    {
        if ($_SESSION['crs_timings_panel'][$this->course_obj->getId()]) {
            return $this->editTimings();
        }
        global $ilAccess,$ilErr;

        if (!$ilAccess->checkAccess('read', '', $this->container_obj->getRefId())) {
            $ilErr->raiseError($this->lng->txt('msg_no_perm_read'), $ilErr->WARNING);
        }
        $this->tabs_gui->setSubTabActive('timings_timings');

        $_SESSION['crs_timings_user_hidden'] = isset($_GET['show_details']) ? $_GET['show_details'] : $_SESSION['crs_timings_user_hidden'];

        include_once 'Services/Object/classes/class.ilObjectActivation.php';
        if (ilObjectActivation::hasChangeableTimings($this->course_obj->getRefId())) {
            $this->__editAdvancedUserTimings();
        } else {
            $this->__editUserTimings();
        }
    }

    public function returnToMembers()
    {
        $this->ctrl->returnToParent($this);
    }

    public function showUserTimings()
    {
        $this->tpl->addBlockfile('ADM_CONTENT', 'adm_content', 'tpl.crs_user_timings.html', 'Modules/Course');
        $this->tabs_gui->clearSubTabs();
        $this->tabs_gui->setTabActive('members');

        if (!$_GET['member_id']) {
            ilUtil::sendFailure($this->lng->txt('no_checkbox'), true);
            $this->ctrl->returnToParent($this);
        }


        // Back button
        $this->tpl->addBlockfile("BUTTONS", "buttons", "tpl.buttons.html");
        $this->tpl->setCurrentBlock("btn_cell");
        $this->tpl->setVariable("BTN_LINK", $this->ctrl->getLinkTarget($this, 'returnToMembers'));
        $this->tpl->setVariable("BTN_TXT", $this->lng->txt("back"));
        $this->tpl->parseCurrentBlock();

        include_once 'Modules/Course/classes/Timings/class.ilTimingAccepted.php';
        $usr_accepted = new ilTimingAccepted($this->course_obj->getId(), (int) $_GET['member_id']);

        if ($usr_accepted->isAccepted()) {
            $this->tpl->setVariable("ACC_IMG", ilUtil::getImagePath('icon_ok.svg'));
            $this->tpl->setVariable("ACC_ALT", $this->lng->txt('timing_accepted'));
        } else {
            $this->tpl->setVariable("ACC_IMG", ilUtil::getImagePath('icon_not_ok.svg'));
            $this->tpl->setVariable("ACC_ALT", $this->lng->txt('timing_not_accepted'));
        }
        if ($usr_accepted->isVisible() and strlen($usr_accepted->getRemark())) {
            $this->tpl->setVariable("REMARK", nl2br($usr_accepted->getRemark()));
        } else {
            $this->tpl->setVariable("REMARK", $this->lng->txt('not_available'));
        }

        $this->tpl->setVariable("TIMING_ACCEPT", $this->lng->txt('timing_accept_table'));
        $this->tpl->setVariable("TXT_ACCEPTED", $this->lng->txt('timing_user_accepted'));
        $this->tpl->setVariable("TXT_REMARK", $this->lng->txt('timing_remark'));

        $this->tpl->setVariable("HEADER_IMG", ilUtil::getImagePath('icon_usr.svg'));
        $this->tpl->setVariable("HEADER_ALT", $this->lng->txt('obj_usr'));
        $this->tpl->setVariable("TABLE_HEADER", $this->lng->txt('timings_of'));
        $name = ilObjUser::_lookupName($_GET['member_id']);
        $this->tpl->setVariable("USER_NAME", $name['lastname'] . ', ' . $name['firstname']);

        $this->tpl->setVariable("TXT_TITLE", $this->lng->txt('title'));
        $this->tpl->setVariable("TXT_START_END", $this->lng->txt('crs_timings_short_start_end'));
        $this->tpl->setVariable("TXT_INFO_START_END", $this->lng->txt('crs_timings_start_end_info'));
        $this->tpl->setVariable("TXT_CHANGED", $this->lng->txt('crs_timings_changed'));
        $this->tpl->setVariable("TXT_OWN_PRESETTING", $this->lng->txt('crs_timings_planed_start'));
        $this->tpl->setVariable("TXT_INFO_OWN_PRESETTING", $this->lng->txt('crs_timings_from_until'));

        include_once 'Services/Object/classes/class.ilObjectActivation.php';
        $items = ilObjectActivation::getTimingsAdministrationItems($this->course_obj->getRefId());
        foreach ($items as $item) {
            if (($item['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING) or
               ilObjectActivation::hasChangeableTimings($item['ref_id'])) {
                $this->__renderUserItem($item, 0);
            }
        }
    }

    public function __renderUserItem($item, $level)
    {
        include_once 'Modules/Course/classes/Timings/class.ilTimingPlaned.php';
        include_once './Services/MetaData/classes/class.ilMDEducational.php';

        $this->lng->loadLanguageModule('meta');

        $usr_planed = new ilTimingPlaned($item['ref_id'], $_GET['member_id']);
        for ($i = 0;$i < $level;$i++) {
            $this->tpl->touchBlock('start_indent');
            $this->tpl->touchBlock('end_indent');
        }
        if (strlen($item['description'])) {
            $this->tpl->setCurrentBlock("item_description");
            $this->tpl->setVariable("DESC", $item['description']);
            $this->tpl->parseCurrentBlock();
        }
        if ($tlt = ilMDEducational::_getTypicalLearningTimeSeconds($item['obj_id'])) {
            $this->tpl->setCurrentBlock("tlt");
            $this->tpl->setVariable("TXT_TLT", $this->lng->txt('meta_typical_learning_time'));
            $this->tpl->setVariable("TLT_VAL", ilDatePresentation::secondsToString($tlt));
            $this->tpl->parseCurrentBlock();
        }
        
        if (!$item['title'] &&
            $item['type'] == 'sess') {
            include_once('./Modules/Session/classes/class.ilSessionAppointment.php');
            $app_info = ilSessionAppointment::_lookupAppointment(ilObject::_lookupObjId($item["ref_id"]));
            $item['title'] = ilSessionAppointment::_appointmentToString($app_info['start'], $app_info['end'], $app_info['fullday']);
        }

        $this->tpl->setCurrentBlock("title_plain");
        $this->tpl->setVariable("TITLE", $item['title']);
        $this->tpl->parseCurrentBlock();

        $this->tpl->setCurrentBlock("container_standard_row");

        $this->tpl->setVariable("ROWCLASS", ilUtil::switchColor($this->counter++, 'tblrow1', 'tblrow2'));
        #$this->tpl->setVariable("TYPE_IMG",ilUtil::getImagePath('icon_'.$item['type'].'.svg'));
        $this->tpl->setVariable('TYPE_IMG', ilUtil::getTypeIconPath($item['type'], $item['obj_id'], 'tiny'));
        $this->tpl->setVariable("TYPE_ALT_IMG", $this->lng->txt('obj_' . $item['type']));

        if ($item['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING) {
            $this->tpl->setVariable('SUG_START', ilDatePresentation::formatDate(new ilDate($item['suggestion_start'], IL_CAL_UNIX)));
            $this->tpl->setVariable('SUG_END', ilDatePresentation::formatDate(new ilDate($item['suggestion_end'], IL_CAL_UNIX)));
        }

        if ($item['changeable'] and $item['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING) {
            if ($usr_planed->getPlanedStartingTime()) {
                $start = $usr_planed->getPlanedStartingTime();
            } else {
                $start = $item['suggestion_start'];
            }
            $this->tpl->setVariable('OWN_START', ilDatePresentation::formatDate(new ilDate($start, IL_CAL_UNIX)));

            if ($usr_planed->getPlanedEndingTime()) {
                $end = $usr_planed->getPlanedEndingTime();
            } else {
                $end = $item['suggestion_end'];
            }
            if ($start != $item['suggestion_start'] or $end != $item['suggestion_end']) {
                $this->tpl->setVariable("OK_IMG", ilUtil::getImagePath('icon_ok.svg'));
                $this->tpl->setVariable("OK_ALT", $this->lng->txt('crs_timings_changed'));
            } else {
                $this->tpl->setVariable("OK_IMG", ilUtil::getImagePath('icon_not_ok.svg'));
                $this->tpl->setVariable("OK_ALT", $this->lng->txt('crs_timings_not_changed'));
            }
            $this->tpl->setVariable('OWN_END', ilDatePresentation::formatDate(new ilDate($end, IL_CAL_UNIX)));
        }

        $this->tpl->parseCurrentBlock();

        foreach (ilObjectActivation::getTimingsAdministrationItems($item['ref_id']) as $item_data) {
            if (($item_data['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING) or
               ilObjectActivation::hasChangeableTimings($item_data['ref_id'])) {
                $this->__renderUserItem($item_data, $level+1);
            }
        }
    }



    public function __editAdvancedUserTimings()
    {
        $this->tpl->addBlockfile('ADM_CONTENT', 'adm_content', 'tpl.crs_usr_edit_timings_adv.html', 'Modules/Course');
        $this->__showTimingsPanel();
        $this->__showUserAcceptanceTable();

        $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
        $this->tpl->setVariable("HEADER_IMG", ilUtil::getImagePath('icon_crs.svg'));
        $this->tpl->setVariable("HEADER_ALT", $this->lng->txt('obj_crs'));
        $this->tpl->setVariable("BLOCK_HEADER_CONTENT", $this->lng->txt('timings_usr_edit'));

        if (!$_SESSION['crs_timings_user_hidden']) {
            $this->tpl->setVariable("SHOW_HIDE_TEXT", $this->lng->txt('show_details'));
            $this->ctrl->setParameter($this, 'show_details', 1);
            $this->tpl->setVariable("SHOW_HIDE_LINK", $this->ctrl->getLinkTarget($this, 'editUserTimings'));
        } else {
            $this->tpl->setVariable("SHOW_HIDE_TEXT", $this->lng->txt('hide_details'));
            $this->ctrl->setParameter($this, 'show_details', 0);
            $this->tpl->setVariable("SHOW_HIDE_LINK", $this->ctrl->getLinkTarget($this, 'editUserTimings'));
        }
        $this->ctrl->clearParameters($this);
        $this->tpl->setVariable("TXT_TITLE", $this->lng->txt('title'));
        $this->tpl->setVariable("TXT_START_END", $this->lng->txt('crs_timings_short_start_end'));
        $this->tpl->setVariable("TXT_INFO_START_END", $this->lng->txt('crs_timings_start_end_info'));

        $this->tpl->setVariable("TXT_LIMIT", $this->lng->txt('crs_timings_short_limit_start_end'));
        $this->tpl->setVariable("TXT_INFO_LIMIT", $this->lng->txt('crs_timings_from_until'));

        $this->tpl->setVariable("TXT_OWN_PRESETTING", $this->lng->txt('crs_timings_planed_start'));
        $this->tpl->setVariable("TXT_INFO_OWN_PRESETTING", $this->lng->txt('crs_timings_start_end_info'));

        $this->tpl->setVariable("TXT_DURATION", $this->lng->txt('crs_timings_time_frame'));
        $this->tpl->setVariable("TXT_INFO_DURATION", $this->lng->txt('crs_timings_in_days'));

        $this->tpl->setVariable("TXT_BTN_UPDATE", $this->lng->txt('save'));
        $this->tpl->setVariable("TXT_CANCEL", $this->lng->txt('cancel'));

        include_once 'Services/Object/classes/class.ilObjectActivation.php';
        $sorted_items = ilObjectActivation::getTimingsItems($this->course_obj->getRefId());
        
        $this->counter = 0;
        foreach ($sorted_items as $item) {
            switch ($item['type']) {
                case 'itgr':
                    break;
                    
                default:
                    $this->__renderItem($item, 0);
                    break;
            }
        }
    }

    public function __editUserTimings()
    {
        $this->tpl->addBlockfile('ADM_CONTENT', 'adm_content', 'tpl.crs_usr_edit_timings.html', 'Modules/Course');

        $this->__showTimingsPanel();
        $this->__showUserAcceptanceTable();

        $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
        $this->tpl->setVariable("HEADER_IMG", ilUtil::getImagePath('icon_crs.svg'));
        $this->tpl->setVariable("HEADER_ALT", $this->lng->txt('obj_crs'));

        if (!$_SESSION['crs_timings_user_hidden']) {
            $this->tpl->setVariable("SHOW_HIDE_TEXT", $this->lng->txt('show_details'));
            $this->ctrl->setParameter($this, 'show_details', 1);
            $this->tpl->setVariable("SHOW_HIDE_LINK", $this->ctrl->getLinkTarget($this, 'editUserTimings'));
        } else {
            $this->tpl->setVariable("SHOW_HIDE_TEXT", $this->lng->txt('hide_details'));
            $this->ctrl->setParameter($this, 'show_details', 0);
            $this->tpl->setVariable("SHOW_HIDE_LINK", $this->ctrl->getLinkTarget($this, 'editUserTimings'));
        }
        $this->ctrl->clearParameters($this);

        $this->tpl->setVariable("BLOCK_HEADER_CONTENT", $this->lng->txt('timings_timings'));
        $this->tpl->setVariable("TXT_TITLE", $this->lng->txt('title'));
        $this->tpl->setVariable("TXT_START", $this->lng->txt('crs_timings_sug_begin'));
        $this->tpl->setVariable("TXT_END", $this->lng->txt('crs_timings_sug_end'));
    
        include_once 'Services/Object/classes/class.ilObjectActivation.php';
        $sorted_items = ilObjectActivation::getTimingsItems($this->course_obj->getRefId());

        $this->counter = 0;
        foreach ($sorted_items as $item) {
            switch ($item['type']) {
                case 'itgr':
                    break;
                    
                default:
                    $this->__renderItem($item, 0);
                    break;
            }
        }
    }

    public function __renderItem($item, $level)
    {
        global $ilUser,$ilAccess;

        include_once 'Modules/Course/classes/Timings/class.ilTimingPlaned.php';
        include_once './Services/Link/classes/class.ilLink.php';
        include_once './Services/MetaData/classes/class.ilMDEducational.php';
        
        if (!$ilAccess->checkAccess('visible', '', $item['ref_id'])) {
            return false;
        }

        $this->lng->loadLanguageModule('meta');

        $usr_planed = new ilTimingPlaned($item['ref_id'], $ilUser->getId());

        for ($i = 0;$i < $level;$i++) {
            $this->tpl->touchBlock('start_indent');
            $this->tpl->touchBlock('end_indent');
        }
        if (strlen($item['description'])) {
            $this->tpl->setCurrentBlock("item_description");
            $this->tpl->setVariable("DESC", $item['description']);
            $this->tpl->parseCurrentBlock();
        }
        if ($tlt = ilMDEducational::_getTypicalLearningTimeSeconds($item['obj_id'])) {
            $this->tpl->setCurrentBlock("tlt");
            $this->tpl->setVariable("TXT_TLT", $this->lng->txt('meta_typical_learning_time'));
            $this->tpl->setVariable("TLT_VAL", ilDatePresentation::secondsToString($tlt));
            $this->tpl->parseCurrentBlock();
        }
        
        if (!$item['title'] &&
            $item['type'] == 'sess') {
            include_once('./Modules/Session/classes/class.ilSessionAppointment.php');
            $app_info = ilSessionAppointment::_lookupAppointment(ilObject::_lookupObjId($item["ref_id"]));
            $item['title'] = ilSessionAppointment::_appointmentToString($app_info['start'], $app_info['end'], $app_info['fullday']);
        }

        if ($ilAccess->checkAccess('read', '', $item['ref_id'])) {
            $this->tpl->setCurrentBlock("title_as_link");
            $this->tpl->setVariable("TITLE_LINK", ilLink::_getLink($item['ref_id'], $item['type']));
            $this->tpl->setVariable("TITLE_NAME", $item['title']);
            $this->tpl->parseCurrentBlock();
        } else {
            $this->tpl->setCurrentBlock("title_plain");
            $this->tpl->setVariable("TITLE", $item['title']);
            $this->tpl->parseCurrentBlock();
        }
        $this->tpl->setCurrentBlock("container_standard_row");

        if (isset($this->invalid["$item[ref_id]"])) {
            $this->tpl->setVariable("ROWCLASS", 'tblrowmarked');
        } else {
            $this->tpl->setVariable("ROWCLASS", ilUtil::switchColor($this->counter++, 'tblrow1', 'tblrow2'));
        }
        #$this->tpl->setVariable("TYPE_IMG",ilUtil::getImagePath('icon_'.$item['type'].'.svg'));
        $this->tpl->setVariable('TYPE_IMG', ilUtil::getTypeIconPath($item['type'], $item['obj_id'], 'small'));
        $this->tpl->setVariable("TYPE_ALT_IMG", $this->lng->txt('obj_' . $item['type']));


        if ($item['timing_type'] == ilObjectActivation::TIMINGS_PRESETTING) {
            $this->tpl->setVariable('SUG_START', ilDatePresentation::formatDate(new ilDate($item['suggestion_start'], IL_CAL_UNIX)));
            $this->tpl->setVariable('SUG_END', ilDatePresentation::formatDate(new ilDate($item['suggestion_end'], IL_CAL_UNIX)));
        }

        if ($item['changeable']) {
            $item_prefix = "item[" . $item['ref_id'] . ']';

            if (is_array($_POST['item']["$item[ref_id]"]['own_start'])) {
                #echo "Start post<br>";
                $start = $this->__toUnix($_POST['item']["$item[ref_id]"]['own_start']);
            } elseif ($usr_planed->getPlanedStartingTime()) {
                #echo "Own start<br>";
                $start = $usr_planed->getPlanedStartingTime();
            } else {
                #echo "Empfehlung start<br>";
                $start = $item['suggestion_start'];
            }

            $date = $this->__prepareDateSelect($start);
            $this->tpl->setVariable(
                "OWN_START",
                ilUtil::makeDateSelect(
                                        $item_prefix . "[own_start]",
                                        $date['y'],
                                        $date['m'],
                                        $date['d'],
                                        date('Y', time()),
                                        false
                                    )
            );

            if ($usr_planed->getPlanedEndingTime()) {
                #echo "Own End<br>";
                $end = $usr_planed->getPlanedEndingTime();
            } else {
                #echo "Empfehlung end<br>";
                $end = $item['suggestion_end'];
            }
            $this->tpl->setVariable('OWN_END', ilDatePresentation::formatDate(new ilDate($end, IL_CAL_UNIX)));
            $this->tpl->setVariable("NAME_DURATION", $item_prefix . "[duration]");

            // Duration
            if (isset($_POST['item']["$item[ref_id]"]['duration'])) {
                $this->tpl->setVariable("VAL_DURATION", $_POST['item']["$item[ref_id]"]['duration']);
            } else {
                $this->tpl->setVariable("VAL_DURATION", intval(($end - $start) / (60 * 60 * 24)));
            }
            $this->tpl->setVariable('LIM_START', ilDatePresentation::formatDate(new ilDate($item['earliest_start'], IL_CAL_UNIX)));
            $this->tpl->setVariable('LIM_END', ilDatePresentation::formatDate(new ilDate($item['latest_end'], IL_CAL_UNIX)));
        }

        $this->tpl->parseCurrentBlock();

        if (!$_SESSION['crs_timings_user_hidden']) {
            return true;
        }
        
        foreach (ilObjectActivation::getTimingsItems($item['ref_id']) as $item_data) {
            $this->__renderItem($item_data, $level+1);
        }
    }

    public function __showTimingsPanel()
    {
        global $ilAccess, $ilToolbar;

        if (!$ilAccess->checkAccess('write', '', $this->container_obj->getRefId())) {
            return true;
        }
        
        include_once "Services/UIComponent/Button/classes/class.ilLinkButton.php";
        $btn = ilLinkButton::getInstance();
            
        if (!$_SESSION['crs_timings_panel'][$this->course_obj->getId()]) {
            $btn->setCaption("timings_timings_on");
            $btn->setUrl($this->ctrl->getLinkTarget($this, 'timingsOn'));
        } else {
            $btn->setCaption("timings_timings_off");
            $btn->setUrl($this->ctrl->getLinkTarget($this, 'timingsOff'));
        }
        
        $ilToolbar->addButtonInstance($btn);
    }

    public function timingsOn()
    {
        global $ilTabs;
        $_SESSION['crs_timings_panel'][$this->course_obj->getId()] = 1;

        $ilTabs->clearSubTabs();
        $this->__setSubTabs();
        $this->editTimings();
    }

    public function timingsOff()
    {
        global $ilTabs;
        $_SESSION['crs_timings_panel'][$this->course_obj->getId()] = 0;

        $ilTabs->clearSubTabs();
        $this->__setSubTabs();
        $this->editUserTimings();
    }


    public function updateUserTimings()
    {
        global $ilUser,$ilObjDataCache;
        include_once 'Modules/Course/classes/Timings/class.ilTimingPlaned.php';

        // Validate
        $this->invalid = array();
        foreach ($_POST['item'] as $ref_id => $data) {
            $tmp_planed = new ilTimingPlaned($ref_id, $ilUser->getId());

            $tmp_planed->setPlanedStartingTime($this->__toUnix($data['own_start']));
            if (isset($data['duration'])) {
                $data['own_start']['d'] += $data['duration'];
                $tmp_planed->setPlanedEndingTime($this->__toUnix($data['own_start'], array('h' => 23,'m' => 55)));
            } else {
                $tmp_planed->setPlanedEndingTime($this->__toUnix($data['own_start']), array('h' => 23,'m' => 55));
            }
            if (!$tmp_planed->validate()) {
                $this->invalid[$ref_id] = $ilObjDataCache->lookupTitle($ilObjDataCache->lookupObjId($ref_id));
            }
            $all_items[] = $tmp_planed;
        }
        if (count($this->invalid)) {
            $message = $this->lng->txt('crs_timings_update_error');
            $message .= ("<br />" . $this->lng->txt('crs_materials') . ': ');
            $message .= (implode(',', $this->invalid));
            ilUtil::sendFailure($message);
            $this->editUserTimings();
            return false;
        }
        foreach ($all_items as $new_item_obj) {
            $new_item_obj->update();
        }
        ilUtil::sendSuccess($this->lng->txt('settings_saved'));
        $this->editUserTimings();
        return true;
    }


    public function &__loadFromPost(&$item)
    {
        $obj_id = $item['obj_id'];

        if (!isset($_POST['item'][$obj_id])) {
            return $item;
        }
        $item['suggestion_start'] = $this->__toUnix($_POST['item'][$obj_id]['sug_start']);
        if (isset($_POST['item'][$obj_id]['sug_end'])) {
            // #9325
            $item['suggestion_end'] = $this->__toUnix($_POST['item'][$obj_id]['sug_end']);
        }
        $item['earliest_start'] = $this->__toUnix($_POST['item'][$obj_id]['lim_start']);
        $item['latest_end'] = $this->__toUnix($_POST['item'][$obj_id]['lim_end']);
        $item['changeable'] = $_POST['item'][$obj_id]['change'];
        $item['timing_type'] = $_POST['item'][$obj_id]['active'] ? ilObjectActivation::TIMINGS_PRESETTING : $item['timing_type'];
        $item['duration_a'] = $_POST['item'][$obj_id]['duration_a'];
        $item['duration_b'] = $_POST['item'][$obj_id]['duration_b'];

        return $item;
    }

    public function updateTimings()
    {
        include_once 'Services/Object/classes/class.ilObjectActivation.php';

        global $ilAccess,$ilErr;

        if (!$ilAccess->checkAccess('write', '', $this->container_obj->getRefId())) {
            $ilErr->raiseError($this->lng->txt('msg_no_perm_write'), $ilErr->WARNING);
        }
        $this->failed = array();
        // Validate

        $_POST['item'] = is_array($_POST['item']) ? $_POST['item'] : array();
        $all_items = array();

        foreach ($_POST['item'] as $ref_id => $data) {
            $item_obj = new ilObjectActivation();
            $old_data = ilObjectActivation::getItem($ref_id);

            $item_obj->setTimingType($_POST['item_active'][$ref_id]['active'] ?
                ilObjectActivation::TIMINGS_PRESETTING :
                ilObjectActivation::TIMINGS_DEACTIVATED);
            $item_obj->setTimingStart($old_data['timing_start']);
            $item_obj->setTimingEnd($old_data['timing_end']);
            $item_obj->setSuggestionStart($this->__toUnix($data["sug_start"]));

            // add duration
            $data['sug_start']['d'] += abs($data['duration_a']);
            $item_obj->setSuggestionEnd($this->__toUnix($data['sug_start'], array('h' => 23,'m' => 55)));

            $item_obj->setEarliestStart(time());
            $item_obj->setLatestEnd($this->__toUnix($data['lim_end'], array('h' => 23,'m' => 55)));

            $item_obj->toggleVisible($old_data['visible']);
            $item_obj->toggleChangeable($_POST['item_change'][$ref_id]['change']);

            if (!$item_obj->validateActivation()) {
                $this->failed[$ref_id] = $old_data['title'];
            }
            $all_items[$ref_id] =&$item_obj;
            unset($item_obj);
        }

        if (count($this->failed)) {
            $message = $this->lng->txt('crs_timings_update_error');
            $message .= ("<br />" . $this->lng->txt('crs_materials') . ': ');
            $message .= (implode(',', $this->failed));
            ilUtil::sendFailure($message);
            $this->editTimings();
            return false;
        }

        // No do update
        foreach ($all_items as $ref_id => $item_obj_new) {
            $item_obj_new->update($ref_id);
        }
        ilUtil::sendSuccess($this->lng->txt('settings_saved'));
        $this->editTimings();
        return false;
    }

    public function __setSubTabs()
    {
        if ($this->container_obj->getType() == 'crs') {
            $this->container_gui->setContentSubTabs();
        }
    }
    
    public function __initCourseObject()
    {
        global $tree;

        if ($this->container_obj->getType() == 'crs') {
            // Container is course
            $this->course_obj =&$this->container_obj;
        } else {
            $course_ref_id = $tree->checkForParentType($this->container_obj->getRefId(), 'crs');
            $this->course_obj =&ilObjectFactory::getInstanceByRefId($course_ref_id);
        }
        return true;
    }

    public function __toUnix($date, $time = array())
    {
        return gmmktime($time['h'], $time['m'], 0, $date['m'], $date['d'], $date['y']);
    }

    public function __prepareDateSelect($a_unix_time)
    {
        return array('y' => date('Y', $a_unix_time),
                     'm' => date('m', $a_unix_time),
                     'd' => date('d', $a_unix_time));
    }

    public function __prepareTimeSelect($a_unix_time)
    {
        return array('h' => date('G', $a_unix_time),
                     'm' => date('i', $a_unix_time),
                     's' => date('s', $a_unix_time));
    }


    public function __buildPath($a_ref_id)
    {
        global $tree;

        $path_arr = $tree->getPathFull($a_ref_id, $this->course_obj->getRefId());
        $counter = 0;
        foreach ($path_arr as $data) {
            if ($counter++) {
                $path .= " -> ";
            }
            $path .= $data['title'];
        }

        return $path;
    }
} // END class.ilCourseContentGUI