protected function getPresentationClass($presentation, $questionName, $configs = null)
 {
     $event = new OW_Event('base.questions_field_get_label', array('presentation' => $presentation, 'fieldName' => $questionName, 'configs' => $configs, 'type' => 'edit'));
     OW::getEventManager()->trigger($event);
     $label = $event->getData();
     $class = null;
     $event = new OW_Event('base.questions_field_init', array('type' => 'search', 'presentation' => $presentation, 'fieldName' => $questionName, 'configs' => $configs));
     OW::getEventManager()->trigger($event);
     $class = $event->getData();
     if (empty($class)) {
         switch ($presentation) {
             case BOL_QuestionService::QUESTION_PRESENTATION_TEXT:
             case BOL_QuestionService::QUESTION_PRESENTATION_TEXTAREA:
                 $class = new TextField($questionName);
                 break;
             case BOL_QuestionService::QUESTION_PRESENTATION_CHECKBOX:
                 $class = new CheckboxField($questionName);
                 break;
             case BOL_QuestionService::QUESTION_PRESENTATION_RADIO:
             case BOL_QuestionService::QUESTION_PRESENTATION_SELECT:
             case BOL_QuestionService::QUESTION_PRESENTATION_MULTICHECKBOX:
                 $class = new Selectbox($questionName);
                 break;
             case BOL_QuestionService::QUESTION_PRESENTATION_BIRTHDATE:
             case BOL_QuestionService::QUESTION_PRESENTATION_AGE:
                 $class = new USEARCH_CLASS_AgeRangeField($questionName);
                 if (!empty($configs) && mb_strlen(trim($configs)) > 0) {
                     $configsList = json_decode($configs, true);
                     foreach ($configsList as $name => $value) {
                         if ($name = 'year_range' && isset($value['from']) && isset($value['to'])) {
                             $class->setMinYear($value['from']);
                             $class->setMaxYear($value['to']);
                         }
                     }
                 }
                 $class->addValidator(new USEARCH_CLASS_AgeRangeValidator($class->getMinAge(), $class->getMaxAge()));
                 break;
             case self::QUESTION_PRESENTATION_RANGE:
                 $class = new Range($fieldName);
                 if (empty($this->birthdayConfig)) {
                     $birthday = $this->findQuestionByName("birthdate");
                     if (!empty($birthday)) {
                         $this->birthdayConfig = $birthday->custom;
                     }
                 }
                 $rangeValidator = new RangeValidator();
                 if (!empty($this->birthdayConfig) && mb_strlen(trim($this->birthdayConfig)) > 0) {
                     $configsList = json_decode($this->birthdayConfig, true);
                     foreach ($configsList as $name => $value) {
                         if ($name = 'year_range' && isset($value['from']) && isset($value['to'])) {
                             $class->setMinValue(date("Y") - $value['to']);
                             $class->setMaxValue(date("Y") - $value['from']);
                             $rangeValidator->setMinValue(date("Y") - $value['to']);
                             $rangeValidator->setMaxValue(date("Y") - $value['from']);
                         }
                     }
                 }
                 $class->addValidator($rangeValidator);
                 break;
             case self::QUESTION_PRESENTATION_DATE:
                 $class = new DateRange($fieldName);
                 if (!empty($configs) && mb_strlen(trim($configs)) > 0) {
                     $configsList = json_decode($configs, true);
                     foreach ($configsList as $name => $value) {
                         if ($name = 'year_range' && isset($value['from']) && isset($value['to'])) {
                             $class->setMinYear($value['from']);
                             $class->setMaxYear($value['to']);
                         }
                     }
                 }
                 $class->addValidator(new DateValidator($class->getMinYear(), $class->getMaxYear()));
                 break;
             case BOL_QuestionService::QUESTION_PRESENTATION_URL:
                 $class = new TextField($questionName);
                 $class->addValidator(new UrlValidator());
                 break;
         }
         if (!empty($label)) {
             $class->setLabel($label);
         }
         if (empty($class)) {
             $class = BOL_QuestionService::getInstance()->getSearchPresentationClass($presentation, $questionName, $configs);
         }
     }
     return $class;
 }