private function display() : void
    {
        $this->draw();

        $reader = new NonCanonicalReader($this->terminal);
        $reader->addControlMappings($this->defaultControlMappings);

        while ($this->isOpen()) {
            $char = $reader->readCharacter();
            if (!$char->isHandledControl()) {
                $rawChar = $char->get();
                if (isset($this->customControlMappings[$rawChar])) {
                    $this->customControlMappings[$rawChar]($this);
                }
                continue;
            }

            switch ($char->getControl()) {
                case InputCharacter::UP:
                case InputCharacter::DOWN:
                    $this->moveSelectionVertically($char->getControl());
                    $this->draw();
                    break;
                case InputCharacter::LEFT:
                case InputCharacter::RIGHT:
                    $this->moveSelectionHorizontally($char->getControl());
                    $this->draw();
                    break;
                case InputCharacter::ENTER:
                    $this->executeCurrentItem();
                    break;
            }
        }
    }