I think that documentation is misleading - you can easily maintain state in a
singleton inside your .js file, using .pragma library.. You just need to ensure
that you pass the needed qml side information in arguments instead of referring
to them directly.
It's sort of like combining c++ and qml, really.
--
Sent from my Nokia N900
----- Original message -----
> This is because when you include .pragma, you are really indicating that
> you want to create a stateless library. Here's an excerpt from the Docs
> about integrating Javascript:
>
> > > >
> Stateless JavaScript libraries
> Some JavaScript files act more like libraries - they provide a set of
> stateless helper functions that take input and compute output, but never
> manipulate QML component instances directly.
>
> As it would be wasteful for each QML component instance to have a unique
> copy of these libraries, the JavaScript programmer can indicate a
> particular file is a stateless library through the use of a pragma, as
> shown in the following example.
>
> // factorial.js
> .pragma library
>
> function factorial(a) {
> a = parseInt(a);
> if (a <= 0)
> return 1;
> else
> return a * factorial(a - 1);
> }
>
> The pragma declaration must appear before any JavaScript code excluding
> comments.
>
> As they are shared, stateless library files cannot access QML component
> instance objects or properties directly, although QML values can be
> passed as function parameters.
> <<<
>
> Hope this helps.
>
> /René
>
> On Fri, 2010-11-19 at 16:17 +0000, ext ext-ivailo.il...@nokia.com wrote:
> > Hi,
> >
> > I'm trying to create JS library with QML. As written in the
> > documentation I write in the beginning of the JS file .pragra library
> > everything is ok - now my library is not stuck to one QML file and I
> > can everything is ok
> >
> > the problem is that I cannot see Component.Ready and Component - it's
> > not null, but I have error directly when I want to access it :
> > ReferenceError: Can't find variable: Component.
> >
> > if I remove the .pragma library then everything is ok - I can see
> > Component and Comonent.Ready
> >
> > My question is:
> >
> > Is it done on purpose? Is there any reason why I cannot use / and see
> > / those objects in the library is "object". Just a quick tip - Qt
> > object is there - I can see it with or without marking my JS as
> > library.
> >
> > For now I can just "wrap" the error - as Component.Ready is 1 - I will
> > just replace it with 1, but it will be nice if I know what else I can
> > and cannot do with libraries and not.
> >
> > Best Regards,
> > Ivo
> > _______________________________________________
> > Qt-qml mailing list
> > Qt-qml@trolltech.com
> > http://lists.trolltech.com/mailman/listinfo/qt-qml
>
>
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