Shoeists:
Here's a nice little issue:
animate 5 do
alert('yo?')
end
You can't easily escape from that. This is not an issue for end-users, if their
programmers are careful, but it is indeed an issue for programmers, who should
be encouraged to write alert() anywhere, without remembering if they are
somewhere inside an animate{}.
The workaround is to escape the dialog (Gtk) and immediately click the window's
close button.
The best fix I have seen, in old script environments like UEdit, is...
- all "requestors" have a cancel button
- the cancel button raises a special exception
- the environment (in this case the app object containing
the animation) silently absorbs the exception
- the animation would stop
That pattern allows Cancel to gracefully roll-back any committed user action.
--
Phlip
