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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 () public.
Not planed for ever