Sulu\Bundle\PreviewBundle\Websocket\PreviewMessageHandler::execute PHP Method

    protected function execute(MessageHandlerContext $context, $message)
    {
        if (!array_key_exists('command', $message)) {
            throw new MissingParameterException('command');
        }
        $command = $message['command'];
        $result = null;
        switch ($command) {
            case 'start':
                $result = $this->start($context, $message);
                break;
            case 'stop':
                $result = $this->stop($context);
                break;
            case 'update':
                $result = $this->update($context, $message);
                break;
            case 'update-context':
                $result = $this->updateContext($context, $message);
                break;
            case 'render':
                $result = $this->render($context, $message);
                break;
            default:
                throw new \InvalidArgumentException(sprintf('Command "%s" not known', $command));
                break;
        }
        return $result;
    }