The onCurrentPageChanging and onCurrentPageChanged events are not raised when the survey is in question-per-page mode

[SamMousa]

Since, 1.12.16 with the rework of the single question per page mode, the onCurrentPageChanging event no longer fires for the individual questions.

There is no alternative event available.

Originally posted by @SamMousa in #9376

[andrewtelnov]

@SamMousa We do not call onPageChanging/onPageChanged event now, because we changed the behavior. We do not create new pages for every questions any more. We render only one question on the same page, one by one.
If needed a new event could be called that tells that the current displayed question is changed.

Thank you,
Andrew

[SamMousa]

If needed a new event could be called that tells that the current displayed question is changed.

Yeah that's what this issue is about.
We have several features that depend on us being able to know when the "page" from a user perspective changes. A user will click next and see a new question, in their perception that is a page change.

We do things like checking for quotas, or possibly preventing the change, using the onCurrentPageChanging event. This event now no longer covers the single question per page mode. So we need an alternative.

[andrewtelnov]

@SamMousa We will disucss it internally and comeback to you. There is no doubt, there should be an event for this scenario.

Thank you,
Andrew
SurveyJS Team

[SamMousa]

Fixed via #9388 (putting this here for future reference)

Thanks!