Useful!
I got one problem, i cannot mark the content of the Field and overwrite it - must use backspace to remove the input and enter a new number - can i somehow disable this behaviour?
Sorry for a long silence.
I simplified processing algorithm. But I got a problem to deploy hier. So I created new add-on https://vaadin.com/directory#!addon/numberfield7---numberfield7-add-on
Try it in demo. Hard input control now is disabled there.