Field validator state should be accessible

[jwiggins]

It would be nice if there was a flag in the Validator class that held the last value returned by the validate method. Then you could hook that up to, say, a PushButton.enabled attribute and get a text entry dialog that only allowed the 'OK' button to be pressed when the validator was happy with the provided text.

[sccolbert]

I'd prefer to open a new discussion on fixing Field. It leaves a lot to be desired - a good validation model being part of that. What do you think?

[jwiggins]

I don't disagree. I just ran into this particular issue, so I wanted to make a note.