QScript script side callbacks

The solution may be simple. Then again it may not be possible.

I have the base callback class:

Code:

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class CFCallback {
    int command_;
    int transfer_rate_;
    public:
    CFCallback(int command, int transfer_rate = 0) {
        command_ = command; transfer_rate_ = transfer_rate; }
    virtual ~CFCallback() {}
    virtual void operator()(void *data) = 0;
    int GetCommand() { return command_; }
    int GetTransferRate() { return transfer_rate_; }
};

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And here's one example of deriving from CFCallback:

Code:

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void CFPacketVersion::InitiateVersion() {
    class InitiateVersionCB : public CFCallback {
        CFPacketVersion *visitor_;
        public:
        InitiateVersionCB(CFPacketVersion *v, int command) :
            CFCallback(command) {
            visitor_ = v;
        }
        void operator()(void *data) {
            Packet *pkt = (Packet *)data;
            unsigned char *pkt_data = pkt->GetData();
            std::string version = "";
            for(unsigned int i = 0; i < pkt->GetDataLength(); i++ )
                version+= pkt_data[i];
            delete []pkt_data;
            boost::regex rex("CFA(.*?):h(.*?),v(.*?)$");
            boost::smatch what;
            if( boost::regex_match(version, what, rex) ) {
                if(visitor_->GetModel()->GetName() != what[1].str() )
                    LCDInfo("Crystalfontz: Model mismatch");
                visitor_->SetHardwareVersion(what[2]);
                visitor_->SetFirmwareVersion(what[3]);
            }
        }
    };
    GetVersion(new InitiateVersionCB(this, 1));
}

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GetVersion(CFCallback *) is provided to the script engine.

I want to be able to do the same thing as seen in InitiateVersion, but on the javascript side of things. Is that possible?

I know I need to register meta type info for CFCallback. But I don't know if it's possible to use a pointer to a CFCallback. What I tried initially didn't work.

Also, seeing as CFCallback is a functor, I'm not sure how I translate that over to javascript. I imagine I can make CFCallback a QObject and provide a signal emitted from operator(). If you have any tips, please share.