[Forums] Complex permissions down to form level - best practice

Hi,
I have a current requirement from a client which involves applying some complex permissions at role level to widgets on a form. So a role may be able to edit one part of a form but not another and another role may not even be able to see one part of a form.
Is there any easy way of managing this or does it need to be all hard coded against each of the widgets affected?
Debra