Emitter

All Known Subinterfaces:

DestinationReachEmitter, DirectionalMovement, FullCapacityEmitter, PositionChangedEmitter

All Known Implementing Classes:

Beacon, DownMovement, EventManager, LeftMovement, Movable, Port, RightMovement, Satellite, UpMovement
```
public interface Emitter
```
Represents an object which can emit events.

See Also:

EventObject

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`<E extends java.util.EventObject> Listener<E>`	`addEventListener(java.lang.Class<E> event, Listener<E> l)`	Add a new event listener.
`default <E extends java.util.EventObject> Listener<E>`	`removeEventListener(java.lang.Class<E> event, Listener<E> l)`	Remove a listener. Warning this method is optional.

- Method Detail
  - addEventListener
```
<E extends java.util.EventObject> Listener<E> addEventListener(java.lang.Class<E> event,
                                                               Listener<E> l)
```
    Add a new event listener. The listener will be call every time where the event is emitted.
    
    Type Parameters:
    
    E - Any event based on EventObject.
    
    Parameters:
    
    event - Event that will be listened to.
    
    l - Listener to call when the event is emitted.
    
    Returns:
    
    The listener if it is correctly registered otherwise null.
  - removeEventListener
```
default <E extends java.util.EventObject> Listener<E> removeEventListener(java.lang.Class<E> event,
                                                                          Listener<E> l)
```
    Remove a listener.
    Warning this method is optional.
    
    Type Parameters:
    
    E - Any event based on EventObject.
    
    Parameters:
    
    event - Event where the listener listen.
    
    l - Reference to the listener method.
    
    Returns:
    
    The listener if it is correctly removed otherwise null.
    
    Throws:
    
    java.lang.UnsupportedOperationException - If the method is not implemented by the object.