Can UIBB Form Edit/Display mode be determined at run-time?

I'm trying to use a form UIBB in an OIF scenario to edit an object. In certain cases, if the object is locked, I would like to still display the form but disabling all fields. I haven't found any method in the feeder class that enables me to do that. Am I looking in the right place? Or should I disable the form from the AppCC? I'm not sure of which method to use there.

Basically, what I'm asking is that can we dynamically change the display properties of field in a Form UIBB at run-time?