Hi all,
Could you please add the OnBeforeActiveTabIndexChange event and allow to cancel ActiveTabIndexChange in the handler?
I saw an example in the doc about how to prevent tab (index) change, but it is not sufficient because of:
- event if you won't change the tab index, the active tab is still being destroyed and recreated;
- we don't want to keep the tab in memory by using the Persist flag;
We need to prevent tab switching by showing the user a confirmation and reacting to the user's choice.