/**
  * Gets the CSS classes (space-separated) for the Vacancies TD.
  *
  * @param tx_seminars_seminar $seminar the current seminar object
  *
  * @return string class attribute value filled with a list a space-separated CSS classes
  */
 public function getVacanciesClasses(tx_seminars_seminar $seminar)
 {
     if (!$seminar->needsRegistration() || !$seminar->hasDate() && !$this->configGetter->getConfValueBoolean('allowRegistrationForEventsWithoutDate')) {
         return '';
     }
     $classes = array();
     if ($seminar->hasDate() && $seminar->hasStarted()) {
         $classes[] = 'event-begin-date-over';
     }
     if ($seminar->hasVacancies()) {
         $classes[] = 'vacancies-available';
         if ($seminar->hasUnlimitedVacancies()) {
             $classes[] = 'vacancies-unlimited';
         } else {
             $classes[] = 'vacancies-' . $seminar->getVacancies();
         }
     } else {
         $classes[] = 'vacancies-0';
         if ($seminar->hasRegistrationQueue()) {
             $classes[] = 'has-registration-queue';
         }
     }
     // We add this class in addition to the number of vacancies so that
     // user stylesheets still can use the number of vacancies even for
     // events for which the registration deadline is over.
     if ($seminar->hasDate() && $seminar->isRegistrationDeadlineOver()) {
         $classes[] = 'registration-deadline-over';
     }
     $prefixedClasses = array_map(array($this, 'pi_getClassName'), $classes);
     return ' ' . implode(' ', $prefixedClasses);
 }
 /**
  * Checks whether the given event allows registration, as far as its date is concerned.
  *
  * @param tx_seminars_seminar $event the event to check the registration for
  *
  * @return bool TRUE if the event allows registration by date, FALSE otherwise
  */
 public function allowsRegistrationByDate(tx_seminars_seminar $event)
 {
     if ($event->hasDate()) {
         $result = !$event->isRegistrationDeadlineOver();
     } else {
         $result = $event->getConfValueBoolean('allowRegistrationForEventsWithoutDate');
     }
     return $result && $this->registrationHasStarted($event);
 }