[Qt-interest] returning a QObject to javascript in WebKit

[David Boddie]

Paul Dixon wrote:

> One rather ugly hack I'm now considering is to use
> addToJavaScriptWindowObject to drop the object I want to return into
> the window object with a random name, then have my slot return the
> name of the object instance instead:

[...]

> The JS can be written to check if the return value is a string, and if
> it is, grab the object from the window.:
> 
> var foo=myapp.helloWorld();
> if (typeof foo == "string")
> {
>     foo=window[foo];
> }

Or you could use a helper function in JavaScript for each type that you
want to create that uses a predetermined name for the object created
from C++:

  MyObject = function(argument)
  {
      _MyObject_factory.createMyObject(argument);
      return _wrapper;
  }

where _MyObject_factory is an object added to the script environment and
_wrapper is a new object introduced by the createMyObject() slot.

This makes it possible to create new instances like this:

  var myobject = MyObject(argument);

David
-- 
David Boddie
Senior Technical Writer
Nokia, Qt Software