EventListener (JavaDocs for mmm-all 1.0.0-SNAPSHOT)

Type Parameters:

E - the type of the handled events.

All Known Subinterfaces:

ChangeAwareListEventListener<E>, ChangeAwareMapEventListener<K,V>, ChangeAwareObservableEventListener<V>, ChangeAwareSetEventListener<E>, CollectionChangeListener<C>, ContainerChangeListener<C>, ListChangeListener<E>, MapChangeListener<K,V>, ObservableEventListener<V>, SetChangeListener<E>, UiAction, UiActionApply, UiActionApprove, UiActionCancel, UiActionClose, UiActionConfirm, UiActionDelete, UiActionDiscard, UiActionEdit, UiActionNavigate, UiActionNext, UiActionNo, UiActionOk, UiActionOpen, UiActionPrevious, UiActionRemove, UiActionReset, UiActionSave, UiActionSearch, UiActionSubmit, UiActionYes, UiClickEventListener, UiEventListener, UiFocusEventListener, UiNavigationEventListener, UiSelectionEventListener, UiValueChangeEventListener, UiVisibilityEventListener

All Known Implementing Classes:

BidirectionalBinding, BindingListener, ObservableEventReceiver

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface EventListener<E>
```
Interface for a generic event listener.

Since:

1.0.0

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default boolean`	`isMatchedUsingEquals()`
`void`	`onEvent(E event)`	This method is called if an event occurred.

- Method Detail
  - isMatchedUsingEquals
```
default boolean isMatchedUsingEquals()
```
    Returns:
    
    true if to match using equals, false to match via object identity (compared using ==). For better performance the default is false. If you implement this interface as a class overriding equals in order to being able to remove the EventListener without keeping its reference by creating a new equal EventListener instance, then you simply need to override this method returning true.
  - onEvent
```
void onEvent(E event)
```
    This method is called if an event occurred.
    WARNING:
    Depending on the implementation of EventSource it may NOT be legal to add or remove listeners during the call of this method as this may lead to a dead-lock.
    
    Parameters:
    
    event - is the event that notifies about something that happened.