[Newbie question] How to avoid empty boxes?

[Kaspar Fischer]

I have just started looking at Wicket and have a basic question.
My page displays an article with meta-data from the database. I  
display the
meta-data in a box (a <div>...</div>). If no meta-information is  
present,
I don't want the box (the <div>) to appear at all. Is there a generic,
Wicket-style way for achieving this?

I struggle with two things here:

* How to do the conditional markup? (For instance, if the article has no
  author meta-information, I don't want to show "Authors: " in the  
box.)
* How to avoid empty boxes? (The box component would have to buffer its
  markup and check, in the end, whether it is nothing but whitespace.)

Thanks for any pointers.
Kaspar

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