T - the value about to be changedpublic interface ValueChangeHandler<T> extends EventHandler
ValueChangeEvent events.| Modifier and Type | Method and Description | 
|---|---|
| void | onValueChange(ValueChangeEvent<T> event)Called when  ValueChangeEventis fired. | 
void onValueChange(ValueChangeEvent<T> event)
ValueChangeEvent is fired.event - the ValueChangeEvent that was fired