Abstract
An interface allows to register listeners for objects that emit events. If you have a custom class that emits events, you may want to consider using Evented with EventedSupport.
Evented
Signals that the underlying data has changed.
An event indicating that this Controller is invalidated. This event fires when invalidate is called.
Optional
An interface allows to register listeners for objects that emit events. If you have a custom class that emits events, you may want to consider using
Eventedwith EventedSupport.