Combobox ValueChangeListener fires only on blur

Vaadin 6 / 7 / 8 Framework UI
1

Hi, I would like to handle change-events while the user is typing text into a combobox’s textfield. I have connected the combobox to a dataprovider but the user can also just type text without choosing from the appearing dropdown-list. However, a change-event is only fired if the user leaves the field. How can I fire change-events while typing (just like the way it works in a normal textfield)?
I also noticed that the combobox does not have a setValueChangeMode-Method. Why isn’t the HasValueChangeMode-interface implemented by the combobox?

Regards
JJ

2

Answer depends on context. Posting code helps. One possibility: if using a AbstractBackEndDataProvider, you can use the Query parameter passed to fetchFromBackEnd and sizeInBackEnd to handle the change event value

3

Thanks Greg, that’s the way I took. It is all a bit tricky, Vaadin is still like a blackbox with lots of magic to me :slight_smile:
Regards JJ