Quote:
Originally Posted by princeton
It's either 'yes' or 'no'. If it's disabled or not available the answer is 'no'.
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Are you sure about that? Would a disabled checkbox check true for things like isset() and empty(). I think (haven't tested) it will check false for isset(), and in that case, it is a 3rd state.
It may not be intuitive UI-wise, but from a value/state perspective, it is a 3rd state.