Calculated field based on state?

Is it possible to read the current WI state from a javascript used on Calculated Values (providers)? If so, how can I do that?
Wondering how the dependency on the state could be setup to force recalculation if there is no change on the attributes...

My customer wants a calculated field which logic depends on both the WI state and other attributes...
It sounds to me that this requirement is better to be implemented as a reporting feature instead of a calculated field. Ideas?

Thanks,
--Claudia