WidgetEventController.value constructor
      
      WidgetEventController.value(
    
- Set<WidgetEvent> events, {
- ValueSetter<Set< ? onChanged,WidgetEvent> >
Creates a new instance of WidgetEventController with a specific set of events.
- events: The initial set of active- WidgetEvents.
- onChanged: A callback invoked when the set of active events changes. It takes a new set of events as a parameter and returns- void.
Implementation
WidgetEventController.value(
  Set<WidgetEvent> events, {
  this.onChanged,
}) : value = events;