TabSheet - Prevent transition between tabs?

Support
#1

Hello, Jmix Team,

Could you please give an idea how to prevent transition between tabs at the TabSheet component?

BR,
Denislav Kanchev

#2

I’m not Jmix Team, but I have something for you meanwhile to read.

For Vaadin 8

Later versions like 22 have equivalent AddChangeListener

So, you will have to implement such a listener on your tab, and when a tab is selected, you will have to check some condition if a tab can be switched, presumably required fields, and then allow the switch.

Something like described “Handling Tab Close Events” example that is given in the documentation.

Kind regards,
Mladen