class.ilCalendarAppointmentGUI.php

Go to the documentation of this file.

<?php
/* Copyright (c) 1998-2014 ILIAS open source, Extended GPL, see docs/LICENSE */

use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ServerRequestInterface;

class ilCalendarAppointmentGUI
{
    protected $seed = null;
    protected $initialDate = null;
    protected $default_fulltime = true;

    protected $app = null;
    protected $rec = null;
    protected $timezone = null;

    protected $tpl;
    protected $lng;
    protected $ctrl;

    protected $request;
    
    private $logger = null;

    public function __construct(ilDate $seed, ilDate $initialDate, $a_appointment_id = 0)
    {
        global $DIC;

        $this->lng = $DIC->language();
        $this->lng->loadLanguageModule('dateplaner');
        $this->ctrl = $DIC->ctrl();
        $this->tpl = $DIC->ui()->mainTemplate();
        $this->logger = $GLOBALS['DIC']->logger()->cal();
        $this->request = $DIC->http()->request();

        $this->initTimeZone();
        $this->initSeed($seed);
        $this->initInitialDate($initialDate);
        $this->initAppointment($a_appointment_id);
    }
    
    public function executeCommand()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        $ilSetting = $DIC['ilSetting'];
        $tpl = $DIC['tpl'];
        $ilTabs = $DIC['ilTabs'];
        
        
        // Clear tabs and set back target
        $ilTabs->clearTargets();
        $ilTabs->setBackTarget(
            $this->lng->txt('cal_back_to_cal'),
            $this->ctrl->getLinkTarget($this, 'cancel')
        );

        $next_class = $this->ctrl->getNextClass($this);
        switch ($next_class) {
            
            default:
                $cmd = $this->ctrl->getCmd("add");
                $this->$cmd();
                break;
        }

    }
    
    public function getAppointment()
    {
        return $this->app;
    }
    
    protected function cancel()
    {
        $this->ctrl->returnToParent($this);
    }
    
    protected function initForm($a_mode, $a_as_milestone = false, $a_edit_single_app = false)
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        $tpl = $DIC['tpl'];
        
        $this->form = new ilPropertyFormGUI();
        
        include_once('./Services/YUI/classes/class.ilYuiUtil.php');
        ilYuiUtil::initDomEvent();
        $resp_info = false;
        switch ($a_mode) {
            case 'create':
                $this->ctrl->saveParameter($this, array('seed','idate'));
                $this->form->setFormAction($this->ctrl->getFormAction($this));
                if ($a_as_milestone) {
                    $this->form->setTitle($this->lng->txt('cal_new_ms'));
                    $this->form->addCommandButton('saveMilestone', $this->lng->txt('cal_add_milestone'));
                    $this->form->addCommandButton('cancel', $this->lng->txt('cancel'));
                } else {
                    $this->form->setTitle($this->lng->txt('cal_new_app'));
                    $this->form->addCommandButton('save', $this->lng->txt('cal_add_appointment'));
                    $this->form->addCommandButton('cancel', $this->lng->txt('cancel'));
                }
                break;

            case 'edit':
                if ($a_as_milestone) {
                    $this->form->setTitle($this->lng->txt('cal_edit_milestone'));
                } else {
                    $this->form->setTitle($this->lng->txt('cal_edit_appointment'));
                }
                $this->ctrl->saveParameter($this, array('seed','app_id','idate'));
                $this->form->setFormAction($this->ctrl->getFormAction($this));
                
                $ass = new ilCalendarCategoryAssignments($this->app->getEntryId());
                $cat = $ass->getFirstAssignment();
                include_once('./Services/Calendar/classes/class.ilCalendarCategory.php');
                $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat);
                $type = ilObject::_lookupType($cat_info['obj_id']);
                if ($a_as_milestone && $cat_info['type'] == ilCalendarCategory::TYPE_OBJ
                    && ($type == "grp" || $type == "crs")) {
                    $resp_info = true;
                    $this->form->addCommandButton('editResponsibleUsers', $this->lng->txt('cal_change_responsible_users'));
                }
                $this->form->addCommandButton('update', $this->lng->txt('save'));
                // $this->form->addCommandButton('askDelete',$this->lng->txt('delete'));
                $this->form->addCommandButton('cancel', $this->lng->txt('cancel'));
                break;
        }
        // title
        $title = new ilTextInputGUI($this->lng->txt('title'), 'title');
        $title->setValue($this->app->getTitle());
        $title->setRequired(true);
        $title->setMaxLength(128);
        $title->setSize(32);
        $this->form->addItem($title);
        
        // calendar selection
        $calendar = new ilSelectInputGUI($this->lng->txt('cal_category_selection'), 'calendar');
        if ($_POST['category']) {
            $calendar->setValue((int) $_POST['calendar']);
            $selected_calendar = (int) $_POST['calendar'];
        } elseif ($_GET['category_id']) {
            $calendar->setValue((int) $_GET['category_id']);
            $selected_calendar = (int) $_GET['category_id'];
        } elseif ($a_mode == 'edit') {
            $ass = new ilCalendarCategoryAssignments($this->app->getEntryId());
            $cat = $ass->getFirstAssignment();
            $calendar->setValue($cat);
            $selected_calendar = $cat;
        } elseif (isset($_GET['ref_id'])) {
            include_once('./Services/Calendar/classes/class.ilCalendarCategories.php');
            $obj_cal = ilObject::_lookupObjId($_GET['ref_id']);
            $calendar->setValue(ilCalendarCategories::_lookupCategoryIdByObjId($obj_cal));
            $selected_calendar = ilCalendarCategories::_lookupCategoryIdByObjId($obj_cal);
            $cats = ilCalendarCategories::_getInstance($ilUser->getId());
            $cats->readSingleCalendar($selected_calendar);
        } else {
            $cats = ilCalendarCategories::_getInstance($ilUser->getId());
            $categories = $cats->prepareCategoriesOfUserForSelection();
            $selected_calendar = key((array) $categories);
            $calendar->setValue($selected_calendar);
        }
        $calendar->setRequired(true);
        $cats = ilCalendarCategories::_getInstance($ilUser->getId());
        $calendar->setOptions($cats->prepareCategoriesOfUserForSelection());
        
        include_once './Services/Calendar/classes/class.ilCalendarSettings.php';
        if (ilCalendarSettings::_getInstance()->isNotificationEnabled()) {
            $notification_cals = $cats->getNotificationCalendars();
            $notification_cals = count($notification_cals) ? implode(',', $notification_cals) : '';
            $calendar->addCustomAttribute("onchange=\"ilToggleNotification([" . $notification_cals . "]);\"");
        }
        $this->form->addItem($calendar);
        
        if (!$a_as_milestone) {
            include_once './Services/Form/classes/class.ilDateDurationInputGUI.php';
            $tpl->addJavaScript('./Services/Form/js/date_duration.js');
            $dur = new ilDateDurationInputGUI($this->lng->txt('cal_fullday'), 'event');
            $dur->setRequired(true);
            $dur->enableToggleFullTime(
                $this->lng->txt('cal_fullday_title'),
                $this->app->isFullday() ? true : false
            );
            $dur->setShowTime(true);
            $dur->setStart($this->app->getStart());
            $dur->setEnd($this->app->getEnd());
            $this->form->addItem($dur);

            // recurrence
            include_once('./Services/Calendar/classes/Form/class.ilRecurrenceInputGUI.php');
            $rec = new ilRecurrenceInputGUI($this->lng->txt('cal_recurrences'), 'frequence');
            $rec->setRecurrence($this->rec);
            $this->form->addItem($rec);

            // location
            $where = new ilTextInputGUI($this->lng->txt('cal_where'), 'location');
            $where->setValue($this->app->getLocation());
            $where->setMaxLength(128);
            $where->setSize(32);
            $this->form->addItem($where);
        } else {
            $deadline = new ilDateTimeInputGUI($this->lng->txt('cal_deadline'), 'event_start');
            $deadline->setDate($this->app->getStart());
            $deadline->setShowTime(false);
            $deadline->setMinuteStepSize(5);
            $this->form->addItem($deadline);
            
            // completion
            $completion_vals = array();
            for ($i = 0; $i <= 100; $i += 5) {
                $completion_vals[$i] = $i . " %";
            }
            $compl = new ilSelectInputGUI(
                $this->lng->txt('cal_task_completion'),
                'completion'
            );
            $compl->setOptions($completion_vals);
            $compl->setValue($this->app->getCompletion());
            $this->form->addItem($compl);
        }
        
        $desc = new ilTextAreaInputGUI($this->lng->txt('description'), 'description');
        $desc->setValue($this->app->getDescription());
        $desc->setRows(5);
        $this->form->addItem($desc);

        if ($a_as_milestone && $a_mode == "edit" && $resp_info) {
            // users responsible
            $users = $this->app->readResponsibleUsers();
            $resp = new ilNonEditableValueGUI($this->lng->txt('cal_responsible'), "", true);
            $delim = "";
            foreach ($users as $r) {
                $value .= $delim . $r["lastname"] . ", " . $r["firstname"] . " [" . $r["login"] . "]";
                $delim = "<br />";
            }
            if (count($users) > 0) {
                $resp->setValue($value);
            } else {
                $resp->setValue("-");
            }

            $this->form->addItem($resp);
        }
        

        if (ilCalendarSettings::_getInstance()->isUserNotificationEnabled()) {
            $notu = new ilTextWizardInputGUI($this->lng->txt('cal_user_notification'), 'notu');
            $notu->setInfo($this->lng->txt('cal_user_notification_info'));
            $notu->setSize(20);
            $notu->setMaxLength(64);

            $values = array();
            foreach ($this->notification->getRecipients() as $rcp) {
                switch ($rcp['type']) {
                    case ilCalendarUserNotification::TYPE_USER:
                        $values[] = ilObjUser::_lookupLogin($rcp['usr_id']);
                        break;

                    case ilCalendarUserNotification::TYPE_EMAIL:
                        $values[] = $rcp['email'];
                        break;
                }
            }
            if (count($values)) {
                $notu->setValues($values);
            } else {
                $notu->setValues(array(''));
            }
            $this->form->addItem($notu);
        }

        // Notifications
        include_once './Services/Calendar/classes/class.ilCalendarSettings.php';
        if (ilCalendarSettings::_getInstance()->isNotificationEnabled() and count($cats->getNotificationCalendars())) {
            $selected_cal = new ilCalendarCategory($selected_calendar);
            $disabled = true;
            if ($selected_cal->getType() == ilCalendarCategory::TYPE_OBJ) {
                if (ilObject::_lookupType($selected_cal->getObjId()) == 'crs' or ilObject::_lookupType($selected_cal->getObjId()) == 'grp') {
                    $disabled = false;
                }
            }

            $tpl->addJavaScript('./Services/Calendar/js/toggle_notification.js');
            $not = new ilCheckboxInputGUI($this->lng->txt('cal_cg_notification'), 'not');
            $not->setInfo($this->lng->txt('cal_notification_info'));
            $not->setValue(1);
            $not->setChecked($this->app->isNotificationEnabled());
            $not->setDisabled($disabled);
            $this->form->addItem($not);
        }
    }
    
    
    protected function add(ilPropertyFormGUI $form = null)
    {
        global $DIC;

        $ilHelp = $DIC->help();

        $ilHelp->setScreenIdComponent("cal");
        $ilHelp->setScreenId("app");
        $ilHelp->setSubScreenId("create");
        
        if (!$form instanceof ilPropertyFormGUI) {
            $this->initForm('create');
        }
        $this->tpl->setContent($this->form->getHTML());
    }
    
    protected function addMilestone()
    {
        global $DIC;

        $tpl = $DIC['tpl'];
        $ilHelp = $DIC['ilHelp'];

        $ilHelp->setScreenIdComponent("cal");
        $ilHelp->setScreenId("app");
        $ilHelp->setSubScreenId("create_milestone");

        $this->initForm('create', true);
        $tpl->setContent($this->form->getHTML());
    }

    protected function saveMilestone()
    {
        $this->save(true);
    }

    protected function save($a_as_milestone = false)
    {
        global $DIC;

        $ilErr = $DIC['ilErr'];
        
        $this->load('create', $a_as_milestone);
        
        if ($this->app->validate() and $this->notification->validate()) {
            if (!(int) $_POST['calendar']) {
                $cat_id = $this->createDefaultCalendar();
            } else {
                $cat_id = (int) $_POST['calendar'];
            }
            
            $this->app->save();
            $this->notification->setEntryId($this->app->getEntryId());
            $this->notification->save();
            $this->rec->setEntryId($this->app->getEntryId());
            $this->saveRecurrenceSettings();
            
            include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');
            $ass = new ilCalendarCategoryAssignments($this->app->getEntryId());
            $ass->addAssignment($cat_id);
            
            // Send notifications
            include_once './Services/Calendar/classes/class.ilCalendarSettings.php';
            if (ilCalendarSettings::_getInstance()->isNotificationEnabled() and (bool) $_POST['not']) {
                $this->distributeNotifications($cat_id, $this->app->getEntryId(), true);
            }
            if (ilCalendarSettings::_getInstance()->isUserNotificationEnabled()) {
                $this->distributeUserNotifications();
            }

            include_once('./Services/Calendar/classes/class.ilCalendarCategory.php');
            $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat_id);
            $type = ilObject::_lookupType($cat_info['obj_id']);
            
            if ($a_as_milestone && $cat_info['type'] == ilCalendarCategory::TYPE_OBJ
                && ($type == "grp" || $type == "crs")) {
                ilUtil::sendSuccess($this->lng->txt('cal_created_milestone_resp_q'), true);
                return $this->showResponsibleUsersList($cat_info['obj_id']);
            } elseif ($a_as_milestone) {
                ilUtil::sendSuccess($this->lng->txt('cal_created_milestone'), true);
                $this->ctrl->returnToParent($this);
            } else {
                ilUtil::sendSuccess($this->lng->txt('cal_created_appointment'), true);
                $this->ctrl->returnToParent($this);
            }
        } else {
            $this->form->setValuesByPost();
            ilUtil::sendFailure($ilErr->getMessage());
            return $this->add($this->form);
        }
        if ($a_as_milestone) {
            $this->addMilestone();
        } else {
            $this->add();
        }
    }

    protected function distributeUserNotifications()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];

        include_once './Services/Calendar/classes/class.ilCalendarMailNotification.php';
        $notification = new ilCalendarMailNotification();
        $notification->setAppointmentId($this->app->getEntryId());
        
        foreach ($this->notification->getRecipients() as $rcp) {
            switch ($rcp['type']) {
                case ilCalendarUserNotification::TYPE_USER:
                    $notification->setSender(ANONYMOUS_USER_ID);
                    $notification->setRecipients(array($rcp['usr_id']));
                    $notification->setType(ilCalendarMailNotification::TYPE_USER);
                    break;

                case ilCalendarUserNotification::TYPE_EMAIL:
                    $notification->setSender(ANONYMOUS_USER_ID);
                    $notification->setRecipients(array($rcp['email']));
                    $notification->setType(ilCalendarMailNotification::TYPE_USER_ANONYMOUS);
                    break;
            }
            $notification->send();
        }
    }


    protected function distributeNotifications($a_cat_id, $app_id, $a_new_appointment = true)
    {
        include_once('./Services/Calendar/classes/class.ilCalendarCategory.php');
        $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($a_cat_id);
        
        include_once './Services/Calendar/classes/class.ilCalendarMailNotification.php';
        $notification = new ilCalendarMailNotification();
        $notification->setAppointmentId($app_id);
        
        switch ($cat_info['type']) {
            case ilCalendarCategory::TYPE_OBJ:
                
                    switch ($cat_info['obj_type']) {
                        case 'crs':
                            $ref_ids = ilObject::_getAllReferences($cat_info['obj_id']);
                            $ref_id = current($ref_ids);
                            $notification->setRefId($ref_id);
                            $notification->setType(
                                $a_new_appointment ?
                                ilCalendarMailNotification::TYPE_CRS_NEW_NOTIFICATION :
                                ilCalendarMailNotification::TYPE_CRS_NOTIFICATION
                            );
                            break;
                        
                        case 'grp':
                            $ref_ids = ilObject::_getAllReferences($cat_info['obj_id']);
                            $ref_id = current($ref_ids);
                            $notification->setRefId($ref_id);
                            $notification->setType(
                                $a_new_appointment ?
                                ilCalendarMailNotification::TYPE_GRP_NEW_NOTIFICATION :
                                ilCalendarMailNotification::TYPE_GRP_NOTIFICATION
                            );
                            break;
                    }
                    break;
        }

        $notification->send();
    }

    public function editResponsibleUsers()
    {
        include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');
        $cat_id = ilCalendarCategoryAssignments::_lookupCategory($this->app->getEntryId());
        include_once('./Services/Calendar/classes/class.ilCalendarCategory.php');
        $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat_id);

        $this->showResponsibleUsersList($cat_info['obj_id']);
    }
    
    public function showResponsibleUsersList($a_grp_id)
    {
        global $DIC;

        $tpl = $DIC['tpl'];

        include_once("./Services/Calendar/classes/class.ilMilestoneResponsiblesTableGUI.php");
        $table_gui = new ilMilestoneResponsiblesTableGUI(
            $this,
            "",
            $a_grp_id,
            $this->app->getEntryId()
        );
        $tpl->setContent($table_gui->getHTML());
    }
    
    public function saveMilestoneResponsibleUsers()
    {
        global $DIC;

        $ilCtrl = $DIC['ilCtrl'];

        $this->app->writeResponsibleUsers($_POST["user_id"]);
        $ilCtrl->returnToParent($this);
    }
    
    protected function askEdit()
    {
        // check for recurring entries
        include_once './Services/Calendar/classes/class.ilCalendarRecurrences.php';
        $rec = ilCalendarRecurrences::_getRecurrences($this->getAppointment()->getEntryId());
        if (!$rec) {
            return $this->edit(true);
        }
        // Show edit single/all appointments
        $this->ctrl->saveParameter($this, array('seed','app_id','dt','idate'));

        include_once('./Services/Utilities/classes/class.ilConfirmationGUI.php');
        $confirm = new ilConfirmationGUI();
        $confirm->setFormAction($this->ctrl->getFormAction($this));
        #$confirm->setHeaderText($this->lng->txt('cal_edit_app_sure'));
        $confirm->setCancel($this->lng->txt('cancel'), 'cancel');
        $confirm->addItem('appointments[]', $this->app->getEntryId(), $this->app->getTitle());
        $confirm->addButton($this->lng->txt('cal_edit_single'), 'editSingle');
        $confirm->setConfirm($this->lng->txt('cal_edit_recurrences'), 'edit');

        $GLOBALS['DIC']['tpl']->setContent($confirm->getHTML());
    }
    
    protected function editSingle()
    {
        $_REQUEST['rexl'] = 1;
        $GLOBALS['DIC']['ilCtrl']->setParameter($this, 'rexcl', 1);
        $this->edit(true);
    }
    
    protected function edit($a_edit_single_app = false, ilPropertyFormGUI $form = null)
    {
        global $DIC;

        $tpl = $DIC->ui()->mainTemplate();
        $ilUser = $DIC['ilUser'];
        $ilErr = $DIC['ilErr'];
        $ilHelp = $DIC['ilHelp'];

        $ilHelp->setScreenIdComponent("cal");
        $ilHelp->setScreenId("app");
        if ($this->app->isMilestone()) {
            $ilHelp->setSubScreenId("edit_milestone");
        } else {
            $ilHelp->setSubScreenId("edit");
        }

        include_once('./Services/Calendar/classes/class.ilCalendarCategory.php');
        include_once('./Services/Calendar/classes/class.ilCalendarCategories.php');
        include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');

        $GLOBALS['DIC']['ilCtrl']->saveParameter($this, array('seed','app_id','dt','idate'));

        if ($_REQUEST['rexl']) {
            $GLOBALS['DIC']['ilCtrl']->setParameter($this, 'rexl', 1);

            // Calculate new appointment time
            $duration = $this->getAppointment()->getEnd()->get(IL_CAL_UNIX) - $this->getAppointment()->getStart()->get(IL_CAL_UNIX);
            include_once './Services/Calendar/classes/class.ilCalendarRecurrenceCalculator.php';
            $calc = new ilCalendarRecurrenceCalculator($this->getAppointment(), $this->rec);
            
            $current_date = new ilDateTime($_REQUEST['dt'], IL_CAL_UNIX);

            $yesterday = clone $current_date;
            $yesterday->increment(IL_CAL_DAY, -1);
            $tomorrow = clone $current_date;
            $tomorrow->increment(IL_CAL_DAY, 1);
            

            foreach ($calc->calculateDateList($current_date, $tomorrow, 1) as $date_entry) {
                if (ilDateTime::_equals($current_date, $date_entry, IL_CAL_DAY)) {
                    $this->getAppointment()->setStart(new ilDateTime($date_entry->get(IL_CAL_UNIX), IL_CAL_UNIX));
                    $this->getAppointment()->setEnd(new ilDateTime($date_entry->get(IL_CAL_UNIX) + $duration, IL_CAL_UNIX));
                    break;
                }
            }
            
            // Finally reset recurrence
            $this->rec = new ilCalendarRecurrence();
        }
        
        $cat_id = ilCalendarCategoryAssignments::_lookupCategory($this->app->getEntryId());
        $cats = ilCalendarCategories::_getInstance($ilUser->getId());
        
        if (!$cats->isVisible($cat_id)) {
            $ilErr->raiseError($this->lng->txt('permission_denied'), $ilErr->WARNING);
            return false;
        }
        if (!$cats->isEditable($cat_id) or $this->app->isAutoGenerated()) {
            $this->showInfoScreen();
            return true;
        }
        if (!$form instanceof ilPropertyFormGUI) {
            $this->initForm('edit', $this->app->isMilestone(), $a_edit_single_app);
        }
        $tpl->setContent($this->form->getHTML());
    }
    
    protected function showInfoScreen()
    {
        global $DIC;

        $tpl = $DIC['tpl'];
        $ilUser = $DIC['ilUser'];
        
        include_once("./Services/InfoScreen/classes/class.ilInfoScreenGUI.php");
        $info = new ilInfoScreenGUI($this);
        $info->setFormAction($this->ctrl->getFormAction($this));

        if ($this->app->isMilestone()) {
            $info->addSection($this->lng->txt('cal_ms_details'));
        } else {
            $info->addSection($this->lng->txt('cal_details'));
        }

        // Appointment
        $info->addProperty(
            $this->lng->txt('appointment'),
            ilDatePresentation::formatPeriod(
                $this->app->getStart(),
                $this->app->getEnd()
            )
        );
        $info->addProperty($this->lng->txt('title'), $this->app->getPresentationTitle());

        // Description
        if (strlen($desc = $this->app->getDescription())) {
            $info->addProperty($this->lng->txt('description'), $desc);
        }
        
        // Location
        if (strlen($loc = $this->app->getLocation())) {
            $info->addProperty($this->lng->txt('cal_where'), $loc);
        }

        // completion
        if ($this->app->isMilestone() && $this->app->getCompletion() > 0) {
            $info->addProperty(
                $this->lng->txt('cal_task_completion'),
                $this->app->getCompletion() . " %"
            );
        }

        include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');
        $cat_id = ilCalendarCategoryAssignments::_lookupCategory($this->app->getEntryId());
        $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat_id);
        $type = ilObject::_lookupType($cat_info['obj_id']);
        if ($this->app->isMilestone() && $cat_info['type'] == ilCalendarCategory::TYPE_OBJ
            && ($type == "grp" || $type == "crs")) {
            // users responsible
            $users = $this->app->readResponsibleUsers();
            $delim = "";
            foreach ($users as $r) {
                $value .= $delim . $r["lastname"] . ", " . $r["firstname"] . " [" . $r["login"] . "]";
                $delim = "<br />";
            }
            if (count($users) > 0) {
                $info->addProperty(
                    $this->lng->txt('cal_responsible'),
                    $value
                );
            }
        }

        $category = new ilCalendarCategory($cat_id);
        
        if ($category->getType() == ilCalendarCategory::TYPE_OBJ) {
            $info->addSection($this->lng->txt('additional_info'));
            
            $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat_id);
            $refs = ilObject::_getAllReferences($cat_info['obj_id']);
            
            include_once('./Services/Link/classes/class.ilLink.php');
            $href = ilLink::_getStaticLink(current($refs), ilObject::_lookupType($cat_info['obj_id']), true);
            $info->addProperty($this->lng->txt('perma_link'), '<a class="small" href="' . $href . '" target="_top">' . $href . '</a>');
        }
            
        $tpl->setContent($info->getHTML());
    }
    
    protected function update()
    {
        global $DIC;

        $ilErr = $DIC['ilErr'];

        $single_editing = ($_REQUEST['rexl'] ? true : false);
        
        $this->load('edit', $this->app->isMilestone());
        
        if ($this->app->validate() and $this->notification->validate()) {
            if (!(int) $_POST['calendar']) {
                $cat_id = $this->createDefaultCalendar();
            } else {
                $cat_id = (int) $_POST['calendar'];
            }
            
            if ($single_editing) {
                $original_id = $this->getAppointment()->getEntryId();
                $this->getAppointment()->save();
                $selected_ut = (int) ($this->request->getQueryParams()['dt'] ?? 0);
                if ($selected_ut > 0) {
                    $exclusion = new ilCalendarRecurrenceExclusion();
                    $exclusion->setEntryId($original_id);
                    $exclusion->setDate(new ilDate($selected_ut, IL_CAL_UNIX));
                    $this->logger->dump($this->getAppointment()->getEntryId());
                    $this->logger->dump(ilDatePresentation::formatDate(new ilDate($selected_ut, IL_CAL_UNIX)));
                    $exclusion->save();
                }
                $this->rec = new ilCalendarRecurrence();
                $this->rec->setEntryId($this->getAppointment()->getEntryId());
            } else {
                $this->getAppointment()->update();
            }
            $this->notification->save();
            $this->saveRecurrenceSettings();
            include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');
            $ass = new ilCalendarCategoryAssignments($this->app->getEntryId());
            $this->logger->debug($this->app->getEntryId());
            $ass->deleteAssignments();
            $ass->addAssignment($cat_id);
            
            // Send notifications
            include_once './Services/Calendar/classes/class.ilCalendarSettings.php';
            if (ilCalendarSettings::_getInstance()->isNotificationEnabled() and (bool) $_POST['not']) {
                $this->distributeNotifications($cat_id, $this->app->getEntryId(), false);
            }
            if (ilCalendarSettings::_getInstance()->isUserNotificationEnabled()) {
                $this->distributeUserNotifications();
            }
            
            ilUtil::sendSuccess($this->lng->txt('msg_obj_modified'), true);
            $this->ctrl->returnToParent($this);
        } else {
            $this->form->setValuesByPost();
            ilUtil::sendFailure($ilErr->getMessage());
        }
        $this->edit(false, $this->form);
    }
    
    protected function askDelete()
    {
        global $DIC;

        $tpl = $DIC['tpl'];

        $this->ctrl->saveParameter(
            $this,
            [
                'seed',
                'app_id',
                'dt',
                'idate'
            ]
        );

        $app_id = (int) ($this->request->getQueryParams()['app_id'] ?? 0);
        if (!$app_id) {
            ilUtil::sendFailure($this->lng->txt('err_check_input'));
            $this->ctrl->returnToParent($this);
        }

        $entry = new ilCalendarEntry($app_id);
        $recs = ilCalendarRecurrences::_getRecurrences($app_id);
        if (
            !count($recs) &&
            !$this->app->isMilestone()
        ) {
            $confirm = new ilConfirmationGUI();
            $confirm->setFormAction($this->ctrl->getFormAction($this));
            $confirm->setHeaderText($this->lng->txt('cal_delete_app_sure'));
            $confirm->setCancel($this->lng->txt('cancel'), 'cancel');
            $confirm->addItem('appointments[]', $this->app->getEntryId(), $this->app->getTitle());
            $confirm->setConfirm($this->lng->txt('delete'), 'delete');
            $this->tpl->setContent($confirm->getHTML());
        } else {

            $table = new ilCalendarRecurrenceTableGUI(
                $this->app,
                $this,
                'askDelete'
            );
            $table->init();
            $table->parse();
            $this->tpl->setContent($table->getHTML());
            ilUtil::sendQuestion($this->lng->txt('cal_delete_app_sure'));
            ilUtil::sendInfo($this->lng->txt('cal_recurrence_confirm_deletion'));
        }
    }

    protected function delete()
    {
        $app_ids = (array) ($this->request->getParsedBody()['appointment_ids'] ?? []);
        if (!$app_ids) {
            $this->logger->dump($app_ids);
            $app_ids = (array) ($this->request->getQueryParams()['app_id'] ?? []);
        }
        if (!$app_ids) {
            $this->ctrl->returnToParent($this);
        }
        foreach ($app_ids as $app_id) {
            $app = new ilCalendarEntry($app_id);
            $app->delete();
            
            include_once('./Services/Calendar/classes/class.ilCalendarCategoryAssignments.php');
            ilCalendarCategoryAssignments::_deleteByAppointmentId($app_id);

            include_once './Services/Calendar/classes/class.ilCalendarUserNotification.php';
            ilCalendarUserNotification::deleteCalendarEntry($app_id);
        }
        ilUtil::sendSuccess($this->lng->txt('cal_deleted_app'), true);
        $this->ctrl->returnToParent($this);
    }

    protected function deleteExclude($a_return = true)
    {
        $recurrence_ids = (array) ($this->request->getParsedBody()['recurrence_ids'] ?? []);
        $app_id = (int) ($this->request->getQueryParams()['app_id'] ?? 0);
        if (!count($recurrence_ids)) {
            ilUtil::sendFailure($this->lng->txt('select_one'), true);
            $this->ctrl->redirect($this, 'askDelete');
        }
        if (!$app_id) {
            $this->ctrl->returnToParent($this);
        }
        foreach ($recurrence_ids as $rdate) {
            $exclusion = new ilCalendarRecurrenceExclusion();
            $exclusion->setEntryId($app_id);
            $exclusion->setDate(new ilDate($rdate, IL_CAL_UNIX));
            $exclusion->save();
        }
        if ($a_return) {
            ilUtil::sendSuccess($this->lng->txt('cal_deleted_app'), true);
            $this->ctrl->returnToParent($this);
        }
    }
    
    protected function initTimeZone()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        
        $this->timezone = $ilUser->getTimeZone();
    }

    protected function initInitialDate(ilDate $initialDate)
    {
        if (!isset($_GET['hour'])) {
            $this->initialDate = clone $initialDate;
            $this->default_fulltime = true;
        } else {
            if ((int) $_GET['hour'] < 10) {
                $time = '0' . (int) $_GET['hour'] . ':00:00';
            } else {
                $time = (int) $_GET['hour'] . ':00:00';
            }
            $this->initialDate = new ilDateTime($initialDate->get(IL_CAL_DATE) . ' ' . $time, IL_CAL_DATETIME, $this->timezone);
            $this->default_fulltime = false;
        }
    }
    
    protected function initSeed(ilDate $seed)
    {
        $this->seed = clone $seed;
        $this->default_fulltime = true;
    }
    
    protected function initAppointment($a_app_id = 0)
    {
        include_once('./Services/Calendar/classes/class.ilCalendarEntry.php');
        include_once('./Services/Calendar/classes/class.ilCalendarRecurrences.php');
        $this->app = new ilCalendarEntry($a_app_id);

        include_once './Services/Calendar/classes/class.ilCalendarUserNotification.php';
        $this->notification = new ilCalendarUserNotification($this->app->getEntryId());
        
        if (!$a_app_id) {
            $start = clone $this->initialDate;
            $this->app->setStart($start);

            $seed_end = clone $this->initialDate;
            if ($this->default_fulltime) {
                #$seed_end->increment(IL_CAL_DAY,1);
            } else {
                $seed_end->increment(IL_CAL_HOUR, 1);
            }
            $this->app->setEnd($seed_end);
            $this->app->setFullday($this->default_fulltime);
            
            $this->rec = new ilCalendarRecurrence();
        } else {
            $this->rec = ilCalendarRecurrences::_getFirstRecurrence($this->app->getEntryId());
        }
    }
    
    protected function load($a_mode, $a_as_milestone = false)
    {
        // needed for date handling
        $this->initForm($a_mode, $a_as_milestone);
        $this->form->checkInput();
        
        if ($a_as_milestone) {
            $this->app->setMilestone(true);
            $this->app->setCompletion(ilUtil::stripSlashes($_POST['completion']));
        }
        
        $this->app->setTitle(ilUtil::stripSlashes($_POST['title']));
        $this->app->setLocation(ilUtil::stripSlashes($_POST['location']));
        $this->app->setDescription(ilUtil::stripSlashes($_POST['description']));
        $this->app->setTitle(ilUtil::stripSlashes($_POST['title']));
        $this->app->enableNotification((int) $_POST['not']);
        
        if ($a_as_milestone) {  // milestones are always fullday events
            $start = $this->form->getItemByPostVar('event_start');
            $start = $start->getDate();
            
            $this->app->setFullday(true);
            
            // for milestones is end date = start date
            $this->app->setStart($start);
            $this->app->setEnd($start);
        } else {
            $period = $this->form->getItemByPostVar('event');
            $start = $period->getStart();
            $end = $period->getEnd();
            
            $this->app->setFullday($start instanceof ilDate);
            $this->app->setStart($start);
            $this->app->setEnd($end);
        }

        $this->loadNotificationRecipients();
        $this->loadRecurrenceSettings($a_as_milestone = false);
    }

    protected function loadNotificationRecipients()
    {
        $this->notification->setRecipients(array());

        foreach ((array) $_POST['notu'] as $rcp) {
            $rcp = trim(ilUtil::stripSlashes($rcp));
            $usr_id = ilObjUser::_loginExists($rcp);

            if (strlen($rcp) == 0) {
                continue;
            }

            if ($usr_id) {
                $this->notification->addRecipient(
                    ilCalendarUserNotification::TYPE_USER,
                    $usr_id
                );
            } else {
                $this->notification->addRecipient(
                    ilCalendarUserNotification::TYPE_EMAIL,
                    0,
                    $rcp
                );
            }
        }
    }
    
    protected function loadRecurrenceSettings($a_as_milestone = false)
    {
        $this->rec->reset();
        
        switch ($_POST['frequence']) {
            case IL_CAL_FREQ_DAILY:
                $this->rec->setFrequenceType($_POST['frequence']);
                $this->rec->setInterval((int) $_POST['count_DAILY']);
                break;
            
            case IL_CAL_FREQ_WEEKLY:
                $this->rec->setFrequenceType($_POST['frequence']);
                $this->rec->setInterval((int) $_POST['count_WEEKLY']);
                if (is_array($_POST['byday_WEEKLY'])) {
                    $this->rec->setBYDAY(ilUtil::stripSlashes(implode(',', $_POST['byday_WEEKLY'])));
                }
                break;

            case IL_CAL_FREQ_MONTHLY:
                $this->rec->setFrequenceType($_POST['frequence']);
                $this->rec->setInterval((int) $_POST['count_MONTHLY']);
                switch ((int) $_POST['subtype_MONTHLY']) {
                    case 0:
                        // nothing to do;
                        break;
                    
                    case 1:
                        switch ((int) $_POST['monthly_byday_day']) {
                            case 8:
                                // Weekday
                                $this->rec->setBYSETPOS((int) $_POST['monthly_byday_num']);
                                $this->rec->setBYDAY('MO,TU,WE,TH,FR');
                                break;
                                
                            case 9:
                                // Day of month
                                $this->rec->setBYMONTHDAY((int) $_POST['monthly_byday_num']);
                                break;
                                
                            default:
                                $this->rec->setBYDAY((int) $_POST['monthly_byday_num'] . $_POST['monthly_byday_day']);
                                break;
                        }
                        break;
                    
                    case 2:
                        $this->rec->setBYMONTHDAY((int) $_POST['monthly_bymonthday']);
                        break;
                }
                break;
            
            case IL_CAL_FREQ_YEARLY:
                $this->rec->setFrequenceType($_POST['frequence']);
                $this->rec->setInterval((int) $_POST['count_YEARLY']);
                switch ((int) $_POST['subtype_YEARLY']) {
                    case 0:
                        // nothing to do;
                        break;
                    
                    case 1:
                        $this->rec->setBYMONTH((int) $_POST['yearly_bymonth_byday']);
                        $this->rec->setBYDAY((int) $_POST['yearly_byday_num'] . $_POST['yearly_byday']);
                        break;
                    
                    case 2:
                        $this->rec->setBYMONTH((int) $_POST['yearly_bymonth_by_monthday']);
                        $this->rec->setBYMONTHDAY((int) $_POST['yearly_bymonthday']);
                        break;
                }
                break;
        }
        
        // UNTIL
        switch ((int) $_POST['until_type']) {
            case 1:
                $this->rec->setFrequenceUntilDate(null);
                // nothing to do
                break;
                
            case 2:
                $this->rec->setFrequenceUntilDate(null);
                $this->rec->setFrequenceUntilCount((int) $_POST['count']);
                break;
                
            case 3:
                $dt = new ilDateTimeInputGUI('', 'until_end');
                $dt->setRequired(true);
                if ($dt->checkInput()) {
                    $this->rec->setFrequenceUntilCount(0);
                    $this->rec->setFrequenceUntilDate($dt->getDate());
                }
                break;
        }
    }
    
    protected function saveRecurrenceSettings()
    {
        switch ($_POST['frequence']) {
            case 'NONE':
            case '':
                // No recurrence => delete if there is an recurrence rule
                if ($this->rec->getRecurrenceId()) {
                    $this->rec->delete();
                }
                break;
            
            default:
                if ($this->rec->getRecurrenceId()) {
                    $this->rec->update();
                } else {
                    $this->rec->save();
                }
                break;
        }
    }
    
    protected function createDefaultCalendar()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        $lng = $DIC['lng'];

        $cat = new ilCalendarCategory();
        $cat->setColor(ilCalendarCategory::DEFAULT_COLOR);
        $cat->setType(ilCalendarCategory::TYPE_USR);
        $cat->setTitle($this->lng->txt('cal_default_calendar'));
        $cat->setObjId($ilUser->getId());
        
        // delete calendar cache
        include_once './Services/Calendar/classes/class.ilCalendarCache.php';
        ilCalendarCache::getInstance()->deleteUserEntries($ilUser->getId());

        return $cat->add();
    }
    
    protected function confirmRegister()
    {
        global $DIC;

        $tpl = $DIC['tpl'];
        
        $entry = new ilCalendarEntry((int) $_GET['app_id']);
        $start = ilDatePresentation::formatDate(
            new ilDateTime($_GET['dstart'], IL_CAL_UNIX),
            new ilDateTime($_GET['dend'], IL_CAL_UNIX)
        );
            
        
        include_once 'Services/Utilities/classes/class.ilConfirmationGUI.php';
        $conf = new ilConfirmationGUI;
        
        $this->ctrl->setParameter($this, 'dstart', (int) $_REQUEST['dstart']);
        $this->ctrl->setParameter($this, 'dend', (int) $_REQUEST['dend']);
        
        $conf->setFormAction($this->ctrl->getFormAction($this));
        $conf->setHeaderText($this->lng->txt('cal_confirm_reg_info'));
        $conf->setConfirm($this->lng->txt('cal_reg_register'), 'register');
        $conf->setCancel($this->lng->txt('cancel'), 'cancel');
        $conf->addItem('app_id', $entry->getEntryId(), $entry->getTitle() . ' (' . $start . ')');
        
        $tpl->setContent($conf->getHTML());
    }
    
    protected function register()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        
        include_once './Services/Calendar/classes/class.ilCalendarRegistration.php';
        $reg = new ilCalendarRegistration((int) $_POST['app_id']);
        $reg->register(
            $ilUser->getId(),
            new ilDateTime((int) $_REQUEST['dstart'], IL_CAL_UNIX),
            new ilDateTime((int) $_REQUEST['dend'], IL_CAL_UNIX)
        );

        ilUtil::sendSuccess($this->lng->txt('cal_reg_registered'), true);
        $this->ctrl->returnToParent($this);
    }

    public function confirmUnregister()
    {
        global $DIC;

        $tpl = $DIC['tpl'];
        
        
        $entry = new ilCalendarEntry((int) $_GET['app_id']);
        $start = ilDatePresentation::formatDate(
            $dstart = new ilDateTime($_GET['dstart'], IL_CAL_UNIX),
            $dend = new ilDateTime($_GET['dend'], IL_CAL_UNIX)
        );
            
        
        include_once 'Services/Utilities/classes/class.ilConfirmationGUI.php';
        $conf = new ilConfirmationGUI;
        
        $this->ctrl->setParameter($this, 'dstart', (int) $_REQUEST['dstart']);
        $this->ctrl->setParameter($this, 'dend', (int) $_REQUEST['dend']);
        
        $conf->setFormAction($this->ctrl->getFormAction($this));
        $conf->setHeaderText($this->lng->txt('cal_confirm_unreg_info'));
        $conf->setConfirm($this->lng->txt('cal_reg_unregister'), 'unregister');
        $conf->setCancel($this->lng->txt('cancel'), 'cancel');
        $conf->addItem('app_id', $entry->getEntryId(), $entry->getTitle() . ' (' . $start . ')');
        
        $tpl->setContent($conf->getHTML());
    }

    protected function unregister()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        
        include_once './Services/Calendar/classes/class.ilCalendarRegistration.php';
        $reg = new ilCalendarRegistration((int) $_POST['app_id']);
        $reg->unregister(
            $ilUser->getId(),
            new ilDateTime((int) $_REQUEST['dstart'], IL_CAL_UNIX),
            new ilDateTime((int) $_REQUEST['dend'], IL_CAL_UNIX)
        );

        ilUtil::sendSuccess($this->lng->txt('cal_reg_unregistered'), true);
        $this->ctrl->returnToParent($this);
    }
    
    public function book()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        $tpl = $DIC['tpl'];
        
        $entry_id = (int) $_GET['app_id'];
        $this->ctrl->saveParameter($this, 'app_id');
        
        include_once 'Services/Calendar/classes/class.ilCalendarEntry.php';
        include_once 'Services/Booking/classes/class.ilBookingEntry.php';
        $entry = new ilCalendarEntry($entry_id);
        $booking = new \ilBookingEntry($entry->getContextId());
        $user = $booking->getObjId();


        $form = $this->initFormConfirmBooking();
        $form->getItemByPostVar('date')->setValue(ilDatePresentation::formatPeriod($entry->getStart(), $entry->getEnd()));
        $form->getItemByPostVar('title')->setValue($entry->getTitle() . " (" . ilObjUser::_lookupFullname($user) . ')');
        
        $tpl->setContent($form->getHTML());
        return true;
    }
    
    protected function initFormConfirmBooking()
    {
        include_once './Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->addCommandButton('bookconfirmed', $this->lng->txt('cal_confirm_booking'));
        $form->addCommandButton('cancel', $this->lng->txt('cancel'));
        
        $date = new ilNonEditableValueGUI($this->lng->txt('appointment'), 'date');
        $form->addItem($date);
        
        $title = new ilNonEditableValueGUI($this->lng->txt('title'), 'title');
        $form->addItem($title);
        
        $message = new ilTextAreaInputGUI($this->lng->txt('cal_ch_booking_message_tbl'), 'comment');
        $message->setRows(5);
        $form->addItem($message);
        
        return $form;
    }

    public function bookconfirmed()
    {
        global $DIC;

        $ilUser = $DIC->user();

        $entry = (int) $_REQUEST['app_id'];
        $form = $this->initFormConfirmBooking();
        if ($form->checkInput()) {
            // check if appointment is bookable
            include_once './Services/Calendar/classes/class.ilCalendarEntry.php';
            $cal_entry = new ilCalendarEntry($entry);
            
            include_once './Services/Booking/classes/class.ilBookingEntry.php';
            $booking = new ilBookingEntry($cal_entry->getContextId());
            
            if (!$booking->isAppointmentBookableForUser($entry, $GLOBALS['DIC']['ilUser']->getId())) {
                ilUtil::sendFailure($this->lng->txt('cal_booking_failed_info'), true);
                $this->ctrl->returnToParent($this);
            }
            
            include_once './Services/Calendar/classes/ConsultationHours/class.ilConsultationHourUtils.php';
            ilConsultationHourUtils::bookAppointment($ilUser->getId(), $entry);
            
            include_once './Services/Booking/classes/class.ilBookingEntry.php';
            ilBookingEntry::writeBookingMessage($entry, $ilUser->getId(), $form->getInput('comment'));
        }
        ilUtil::sendSuccess($this->lng->txt('cal_booking_confirmed'), true);
        $this->ctrl->returnToParent($this);
    }

    public function cancelBooking()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];
        $tpl = $DIC['tpl'];

        $entry = (int) $_GET['app_id'];
    
        include_once 'Services/Calendar/classes/class.ilCalendarEntry.php';
        $entry = new ilCalendarEntry($entry);

        $category = $this->calendarEntryToCategory($entry);
        if ($category->getType() == ilCalendarCategory::TYPE_CH) {
            include_once 'Services/Booking/classes/class.ilBookingEntry.php';
            $booking = new ilBookingEntry($entry->getContextId());
            if (!$booking->hasBooked($entry->getEntryId())) {
                $this->ctrl->returnToParent($this);
                return false;
            }

            $entry_title = ' ' . $entry->getTitle() . " (" . ilObjUser::_lookupFullname($booking->getObjId()) . ')';
        } elseif ($category->getType() == ilCalendarCategory::TYPE_BOOK) {
            $entry_title = ' ' . $entry->getTitle();
        } else {
            $this->ctrl->returnToParent($this);
            return false;
        }

        $title = ilDatePresentation::formatPeriod($entry->getStart(), $entry->getEnd());
        
        include_once 'Services/Utilities/classes/class.ilConfirmationGUI.php';
        $conf = new ilConfirmationGUI;
        $conf->setFormAction($this->ctrl->getFormAction($this));
        $conf->setHeaderText($this->lng->txt('cal_cancel_booking_info'));
        $conf->setConfirm($this->lng->txt('cal_cancel_booking'), 'cancelconfirmed');
        $conf->setCancel($this->lng->txt('cancel'), 'cancel');
        $conf->addItem('app_id', $entry->getEntryId(), $title . ' - ' . $entry_title);

        $tpl->setContent($conf->getHTML());
    }

    public function cancelConfirmed()
    {
        global $DIC;

        $ilUser = $DIC['ilUser'];

        $entry = (int) $_POST['app_id'];

        include_once 'Services/Calendar/classes/class.ilCalendarEntry.php';
        $entry = new ilCalendarEntry($entry);
        
        $category = $this->calendarEntryToCategory($entry);
        if ($category->getType() == ilCalendarCategory::TYPE_CH) {
            // find cloned calendar entry in user calendar
            include_once 'Services/Calendar/classes/ConsultationHours/class.ilConsultationHourAppointments.php';
            $apps = ilConsultationHourAppointments::getAppointmentIds(
                $ilUser->getId(),
                $entry->getContextId(),
                $entry->getStart(),
                ilCalendarCategory::TYPE_CH,
                false
            );

            // Fix for wrong, old entries
            foreach ((array) $apps as $own_app) {
                $ref_entry = new ilCalendarEntry($own_app);
                $ref_entry->delete();
            }
            
            include_once 'Services/Booking/classes/class.ilBookingEntry.php';
            $booking = new ilBookingEntry($entry->getContextId());
            $booking->cancelBooking($entry->getEntryId());

        // do NOT delete original entry
        } elseif ($category->getType() == ilCalendarCategory::TYPE_BOOK) {
            $booking = new ilBookingReservation($entry->getContextId());
            $booking->setStatus(ilBookingReservation::STATUS_CANCELLED);
            $booking->update();
            
            $entry->delete();
        }

        ilUtil::sendSuccess($this->lng->txt('cal_cancel_booking_confirmed'), true);
        $this->ctrl->returnToParent($this);
    }

    protected function calendarEntryToCategory(ilCalendarEntry $entry)
    {
        include_once 'Services/Calendar/classes/class.ilCalendarCategoryAssignments.php';
        include_once 'Services/Calendar/classes/class.ilCalendarCategory.php';
        $assignment = new ilCalendarCategoryAssignments($entry->getEntryId());
        $assignment = $assignment->getFirstAssignment();
        return new ilCalendarCategory($assignment);
    }

    protected function doUserAutoComplete()
    {
        if (!isset($_GET['autoCompleteField'])) {
            $a_fields = array('login','firstname','lastname','email');
        } else {
            $a_fields = array((string) $_GET['autoCompleteField']);
        }

        include_once './Services/User/classes/class.ilUserAutoComplete.php';
        $auto = new ilUserAutoComplete();
        $auto->setSearchFields($a_fields);
        $auto->enableFieldSearchableCheck(true);
        $auto->setMoreLinkAvailable(true);

        if (($_REQUEST['fetchall'])) {
            $auto->setLimit(ilUserAutoComplete::MAX_ENTRIES);
        }

        echo $auto->getList($_REQUEST['query']);
        exit();
    }
}