/**
  * show info screen
  *
  * @access protected
  * @return
  */
 protected function showInfoScreen()
 {
     global $tpl, $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());
 }
 /**
  * get HTML
  *
  * @access public
  * @param 
  * @return
  */
 public function getHTML($a_app)
 {
     global $tree, $lng, $ilUser;
     self::$counter++;
     $this->tpl = new ilTemplate('tpl.appointment_panel.html', true, true, 'Services/Calendar');
     // Panel variables
     $this->tpl->setVariable('PANEL_NUM', self::$counter);
     $this->tpl->setVariable('PANEL_TITLE', str_replace(' ()', '', $a_app['event']->getPresentationTitle(false)));
     if ($a_app["event"]->isMilestone()) {
         $this->tpl->setVariable('PANEL_DETAILS', $this->lng->txt('cal_ms_details'));
     } else {
         $this->tpl->setVariable('PANEL_DETAILS', $this->lng->txt('cal_details'));
     }
     $this->tpl->setVariable('PANEL_TXT_DATE', $this->lng->txt('date'));
     if ($a_app['fullday']) {
         $this->tpl->setVariable('PANEL_DATE', ilDatePresentation::formatPeriod(new ilDate($a_app['dstart'], IL_CAL_UNIX), new ilDate($a_app['dend'], IL_CAL_UNIX)));
     } else {
         $this->tpl->setVariable('PANEL_DATE', ilDatePresentation::formatPeriod(new ilDateTime($a_app['dstart'], IL_CAL_UNIX), new ilDateTime($a_app['dend'], IL_CAL_UNIX)));
     }
     if ($a_app['event']->getLocation()) {
         $this->tpl->setVariable('PANEL_TXT_WHERE', $this->lng->txt('cal_where'));
         $this->tpl->setVariable('PANEL_WHERE', ilUtil::makeClickable($a_app['event']->getLocation()), true);
     }
     if ($a_app['event']->getDescription()) {
         $this->tpl->setVariable('PANEL_TXT_DESC', $this->lng->txt('description'));
         $this->tpl->setVariable('PANEL_DESC', ilUtil::makeClickable(nl2br($a_app['event']->getDescription())));
     }
     if ($a_app['event']->isMilestone() && $a_app['event']->getCompletion() > 0) {
         $this->tpl->setVariable('PANEL_TXT_COMPL', $this->lng->txt('cal_task_completion'));
         $this->tpl->setVariable('PANEL_COMPL', $a_app['event']->getCompletion() . " %");
     }
     if ($a_app['event']->isMilestone()) {
         // users responsible
         $users = $a_app['event']->readResponsibleUsers();
         $delim = "";
         foreach ($users as $r) {
             $value .= $delim . $r["lastname"] . ", " . $r["firstname"] . " [" . $r["login"] . "]";
             $delim = "<br />";
         }
         if (count($users) > 0) {
             $this->tpl->setVariable('PANEL_TXT_RESP', $this->lng->txt('cal_responsible'));
             $this->tpl->setVariable('PANEL_RESP', $value);
         }
     }
     include_once './Services/Calendar/classes/class.ilCalendarCategoryAssignments.php';
     $cat_id = ilCalendarCategoryAssignments::_lookupCategory($a_app['event']->getEntryId());
     $cat_info = ilCalendarCategories::_getInstance()->getCategoryInfo($cat_id);
     $entry_obj_id = isset($cat_info['subitem_obj_ids'][$cat_id]) ? $cat_info['subitem_obj_ids'][$cat_id] : $cat_info['obj_id'];
     $this->tpl->setVariable('PANEL_TXT_CAL_TYPE', $this->lng->txt('cal_cal_type'));
     switch ($cat_info['type']) {
         case ilCalendarCategory::TYPE_GLOBAL:
             $this->tpl->setVariable('PANEL_CAL_TYPE', $this->lng->txt('cal_type_system'));
             break;
         case ilCalendarCategory::TYPE_USR:
             $this->tpl->setVariable('PANEL_CAL_TYPE', $this->lng->txt('cal_type_personal'));
             break;
         case ilCalendarCategory::TYPE_OBJ:
             $type = ilObject::_lookupType($cat_info['obj_id']);
             $this->tpl->setVariable('PANEL_CAL_TYPE', $this->lng->txt('cal_type_' . $type));
             // Course group appointment registration
             if ($this->settings->isCGRegistrationEnabled() and $type == 'crs' or type == 'grp') {
                 if (!$a_app['event']->isAutoGenerated()) {
                     include_once './Services/Calendar/classes/class.ilCalendarRegistration.php';
                     $reg = new ilCalendarRegistration($a_app['event']->getEntryId());
                     if ($reg->isRegistered($ilUser->getId(), new ilDateTime($a_app['dstart'], IL_CAL_UNIX), new ilDateTime($a_app['dend'], IL_CAL_UNIX))) {
                         $this->tpl->setCurrentBlock('panel_cancel_book_link');
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $a_app['event']->getEntryId());
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dstart', $a_app['dstart']);
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dend', $a_app['dend']);
                         $this->tpl->setVariable('TXT_PANEL_CANCELBOOK', $this->lng->txt('cal_reg_unregister'));
                         $this->tpl->setVariable('PANEL_CANCELBOOK_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'confirmUnregister'));
                         $this->tpl->parseCurrentBlock();
                     } else {
                         $this->tpl->setCurrentBlock('panel_book_link');
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $a_app['event']->getEntryId());
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dstart', $a_app['dstart']);
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dend', $a_app['dend']);
                         $this->tpl->setVariable('TXT_PANEL_BOOK', $this->lng->txt('cal_reg_register'));
                         $this->tpl->setVariable('PANEL_BOOK_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'confirmRegister'));
                         $this->tpl->parseCurrentBlock();
                     }
                     include_once './Services/Link/classes/class.ilLink.php';
                     $registrations = array();
                     foreach ($reg->getRegisteredUsers(new ilDateTime($a_app['dstart'], IL_CAL_UNIX), new ilDateTime($a_app['dend'], IL_CAL_UNIX)) as $usr_data) {
                         $usr_id = $usr_data['usr_id'];
                         $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'user', $usr_id);
                         $registrations[] = '<a href="' . $this->ctrl->getLinkTargetByClass('ilconsultationhoursgui', 'showprofile') . '">' . ilObjUser::_lookupFullname($usr_id);
                         $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'user', '');
                     }
                     if (count($registrations)) {
                         $this->tpl->setCurrentBlock('panel_current_booking');
                         $this->tpl->setVariable('PANEL_TXT_CURRENT_BOOKING', $this->lng->txt('cal_reg_registered_users'));
                         $this->tpl->setVariable('PANEL_CURRENT_BOOKING', implode('<br />', $registrations));
                         $this->tpl->parseCurrentBlock();
                     }
                 }
             }
             break;
         case ilCalendarCategory::TYPE_CH:
             $this->tpl->setVariable('PANEL_CAL_TYPE', $this->lng->txt('cal_ch_ch'));
             include_once 'Services/Booking/classes/class.ilBookingEntry.php';
             $entry = new ilBookingEntry($a_app['event']->getContextId());
             $is_owner = $entry->isOwner();
             $user_entry = $cat_info['obj_id'] == $ilUser->getId();
             if ($user_entry && !$is_owner) {
                 // find source calendar entry in owner calendar
                 include_once 'Services/Calendar/classes/ConsultationHours/class.ilConsultationHourAppointments.php';
                 $apps = ilConsultationHourAppointments::getAppointmentIds($entry->getObjId(), $a_app['event']->getContextId(), $a_app['event']->getStart());
                 $ref_event = $apps[0];
             } else {
                 $ref_event = $a_app['event']->getEntryId();
             }
             $this->tpl->setCurrentBlock('panel_booking_owner');
             $this->tpl->setVariable('PANEL_TXT_BOOKING_OWNER', $this->lng->txt('cal_ch_booking_owner'));
             $this->tpl->setVariable('PANEL_BOOKING_OWNER', ilObjUser::_lookupFullname($entry->getObjId()));
             $this->tpl->parseCurrentBlock();
             $this->tpl->setCurrentBlock('panel_max_booking');
             $this->tpl->setVariable('PANEL_TXT_MAX_BOOKING', $this->lng->txt('cal_ch_num_bookings'));
             $this->tpl->setVariable('PANEL_MAX_BOOKING', $entry->getNumberOfBookings());
             $this->tpl->parseCurrentBlock();
             if (!$is_owner) {
                 if ($entry->hasBooked($ref_event)) {
                     if (ilDateTime::_after($a_app['event']->getStart(), new ilDateTime(time(), IL_CAL_UNIX))) {
                         $this->tpl->setCurrentBlock('panel_cancel_book_link');
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $ref_event);
                         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
                         $this->tpl->setVariable('TXT_PANEL_CANCELBOOK', $this->lng->txt('cal_ch_cancel_booking'));
                         $this->tpl->setVariable('PANEL_CANCELBOOK_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'cancelBooking'));
                         $this->tpl->parseCurrentBlock();
                     }
                 } elseif ($entry->isAppointmentBookableForUser($ref_event, $GLOBALS['ilUser']->getId())) {
                     $this->tpl->setCurrentBlock('panel_book_link');
                     $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $ref_event);
                     $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
                     $this->tpl->setVariable('TXT_PANEL_BOOK', $this->lng->txt('cal_ch_book'));
                     $this->tpl->setVariable('PANEL_BOOK_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'book'));
                     $this->tpl->parseCurrentBlock();
                 }
                 $this->tpl->setCurrentBlock('panel_current_booking');
                 $this->tpl->setVariable('PANEL_TXT_CURRENT_BOOKING', $this->lng->txt('cal_ch_current_bookings'));
                 $this->tpl->setVariable('PANEL_CURRENT_BOOKING', $entry->getCurrentNumberOfBookings($ref_event));
                 $this->tpl->parseCurrentBlock();
             } else {
                 $obj_ids = $entry->getTargetObjIds();
                 foreach ($obj_ids as $obj_id) {
                     $title = ilObject::_lookupTitle($obj_id);
                     $refs = ilObject::_getAllReferences($obj_id);
                     include_once './Services/Link/classes/class.ilLink.php';
                     $this->tpl->setCurrentBlock('panel_booking_target_row');
                     $this->tpl->setVariable('PANEL_BOOKING_TARGET_TITLE', $title);
                     $this->tpl->setVariable('PANEL_BOOKING_TARGET', ilLink::_getLink(end($refs)));
                     $this->tpl->parseCurrentBlock();
                 }
                 if ($obj_ids) {
                     $this->tpl->setCurrentBlock('panel_booking_target');
                     $this->tpl->setVariable('PANEL_TXT_BOOKING_TARGET', $this->lng->txt('cal_ch_target_object'));
                     $this->tpl->parseCurrentBlock();
                 }
                 $link_users = true;
                 if (ilCalendarCategories::_getInstance()->getMode() == ilCalendarCategories::MODE_PORTFOLIO_CONSULTATION) {
                     $link_users = false;
                 }
                 include_once './Services/Link/classes/class.ilLink.php';
                 $bookings = array();
                 $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'panel', 1);
                 foreach ($entry->getCurrentBookings($a_app['event']->getEntryId()) as $user_id) {
                     if ($link_users) {
                         $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'user', $user_id);
                         $bookings[] = '<a href="' . $this->ctrl->getLinkTargetByClass('ilconsultationhoursgui', 'showprofile') . '">' . ilObjUser::_lookupFullname($user_id) . '</a>';
                         $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'user', '');
                     } else {
                         $bookings[] = ilObjUser::_lookupFullname($user_id);
                     }
                 }
                 $this->ctrl->setParameterByClass('ilconsultationhoursgui', 'panel', '');
                 $this->tpl->setCurrentBlock('panel_current_booking');
                 $this->tpl->setVariable('PANEL_TXT_CURRENT_BOOKING', $this->lng->txt('cal_ch_current_bookings'));
                 $this->tpl->setVariable('PANEL_CURRENT_BOOKING', implode('<br />', $bookings));
                 $this->tpl->parseCurrentBlock();
             }
             break;
         case ilCalendarCategory::TYPE_BOOK:
             $this->tpl->setVariable('PANEL_CAL_TYPE', $this->lng->txt('cal_ch_booking'));
             $this->tpl->setCurrentBlock('panel_cancel_book_link');
             $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $a_app['event']->getEntryId());
             $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
             $this->tpl->setVariable('TXT_PANEL_CANCELBOOK', $this->lng->txt('cal_ch_cancel_booking'));
             $this->tpl->setVariable('PANEL_CANCELBOOK_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'cancelBooking'));
             $this->tpl->parseCurrentBlock();
             break;
     }
     $this->tpl->setVariable('PANEL_TXT_CAL_NAME', $this->lng->txt('cal_calendar_name'));
     $this->tpl->setVariable('PANEL_CAL_NAME', $cat_info['title']);
     if ($cat_info['editable'] and !$a_app['event']->isAutoGenerated()) {
         $this->tpl->setCurrentBlock('panel_edit_link');
         $this->tpl->setVariable('TXT_PANEL_EDIT', $this->lng->txt('edit'));
         $this->ctrl->clearParametersByClass('ilcalendarappointmentgui');
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $a_app['event']->getEntryId());
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dt', $a_app['dstart']);
         $this->tpl->setVariable('PANEL_EDIT_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'askEdit'));
         $this->tpl->setCurrentBlock('panel_delete_link');
         $this->tpl->setVariable('TXT_PANEL_DELETE', $this->lng->txt('delete'));
         $this->ctrl->clearParametersByClass('ilcalendarappointmentgui');
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'seed', $this->getSeed()->get(IL_CAL_DATE));
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $a_app['event']->getEntryId());
         $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dt', $a_app['dstart']);
         $this->tpl->setVariable('PANEL_DELETE_HREF', $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'askdelete'));
         $this->tpl->parseCurrentBlock();
     }
     include_once './Services/Calendar/classes/class.ilCalendarCategory.php';
     if ($cat_info['type'] == ilCalendarCategory::TYPE_OBJ) {
         $refs = ilObject::_getAllReferences($entry_obj_id);
         $type = ilObject::_lookupType($entry_obj_id);
         $title = ilObject::_lookupTitle($entry_obj_id) ? ilObject::_lookupTitle($entry_obj_id) : $lng->txt('obj_' . $type);
         include_once './Services/Link/classes/class.ilLink.php';
         $href = ilLink::_getStaticLink(current($refs), ilObject::_lookupType($entry_obj_id));
         $parent = $tree->getParentId(current($refs));
         $parent_title = ilObject::_lookupTitle(ilObject::_lookupObjId($parent));
         $this->tpl->setVariable('PANEL_TXT_LINK', $this->lng->txt('ext_link'));
         $this->tpl->setVariable('PANEL_LINK_HREF', $href);
         $this->tpl->setVariable('PANEL_LINK_NAME', $title);
         $this->tpl->setVariable('PANEL_PARENT', $parent_title);
     }
     return $this->tpl->get();
 }