Reload ComboBox container on user key event

Hi to all,
I’d like to use ComboBox to suggest user a text but I’d like to load only 10 item at time: I want to refresh them for
FILTERINGMODE_STARTSWITH
but I don’t know how do that.

I see some nice Vaadin-Add related this, but they aren’t stable.

Is there any way to set a
new Container(String inserted)
to my ComboBox getting the inserted text even if the user is still writing in it?

Thanks a lot.

N.b. In the parent ComboBox’s class, the Select class, I’ve seen 2 important element that I cannot get by no method: can they be my solution?

private String filterstring;
private String prevfilterstring;