Editable Combo box


The combobox availble in vaadin fires the Valuechangeevent iff the values within the combobox dropdown is selected.

I have a requirement wherin the user should be able to evn type the values in the combobox aprt from selecting the values available in dropdown.

So i am looking out for an editable combobox, which picks up user enterd value and fires the valueChangeEvent

Is anyone aware of this.??