Can the gradient tool be non-destructive?

[CmykStudent]

ESH, rich2005: I have a work-in-progress implementation of non-destructive gradients - we have an issue related as well. It's a bit tricky though. We have to reactivate the tool instead of the filter dialogue when clicked, and the information has to be passed back to the tool from the filter so you're back in your original state. I'll probably need to make another filter to store the extra details from the tool, that contains the gradient filter inside it.