When trying to fix bug #33199 I found out that
there is no normal way to update the wizard
buttons without user interaction.
UseCase: The Import Management Tool wizard needs
to have a source parsed before it could
continue. To make it more responsive it shows
the panel right a way with 'Please wait' message
in the body.
However all the buttons are enabled, so if the
user is quick he can continue without having
parsing finished which results in exception.
Logical solution is to disable those buttons
during parsing which is not problem to do.
However once parsing is done the buttons must be
made enabled. But that is not so easy as there
is no public method to "refresh" the buttons.
Probably best would be to make method UpdateState
Not planed for ever