Component error handler

Hi,

we have a page with several components (after logging in, the user
sees a "dashboard" page with panels offering information from diverse
sources).
We would like to achieve that if one of the component fails to render,
this does not take down the whole page.
So the failing component should handle exceptions locally(render an
error message), allowing the other components to render normally.

I see this was asked on StackOverflow here:
http://stackoverflow.com/questions/12456302/how-to-handle-exceptions-thrown-in-wicket-custom-model

I wonder whether there is by now a better way than in those answers.

regards,
Thibault