FileChooser & external components

I'm new with Luxor and I'd like to know if Luxor covers entirely the 
swing component.
For example I have a swing Gui which uses classes like FileChooser and 
FileFilter.
How can I insert these kinds of classes with Luxor?

And also: within my project I should use an external component such as 
JCalendar, but
I can't find the component which I have to put it in.
Can I select all the components from a xul file? And if yes, how can I 
do this? I think I'm
not understanding something, since for my purposes the lookUp functions 
are not enough.
Or should I write more small xul files, in which I can find components 
more easily?

Regards,
S.


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