Pass Java Script function to C++ method

[Rem-Kolomna]

I declare my object in C++

class Action : public QObject
{
  Q_OBJECT
  Q_PROPERTY(QString name READ name)
public:
  Action(): QObject(0) {}
  QString name() const { return "rem"; }
  Q_INVOKABLE void getData() {};
}

and make it available to qml:

engine()->rootContext()->setContextProperty("action", new Action());

How to pass to getData() method javascript function as parameter and call this function on C++ side?

So from QML point of view it should looks like:

action.getData(function(data) { alert(data); });

[Rem-Kolomna]

I found solution!

Q_INVOKABLE void getCount(QJSValue function)
{
  function.call(QJSValueList() << "qqww");
}