java.lang.Object
- org.eclipse.net4j.util.event.Notifier

All Implemented Interfaces:

INotifier, INotifier.INotifier2

Direct Known Subclasses:

AbstractDelegator, ElementWizard, ExecutorServiceNotifier, History, Lifecycle, ValueNotifier
```
public class Notifier
extends java.lang.Object
implements INotifier.INotifier2
```
A default implementation of a notifier.

Since:

3.0

Author:

Eike Stepper

Nested Class Summary
- Nested classes/interfaces inherited from interface org.eclipse.net4j.util.event.INotifier
  INotifier.INotifier2

Constructor Summary

Constructors
Constructor Description

Notifier()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addListener(IListener listener)`	Adds a listener to this notifier.
`boolean`	`addUniqueListener(IListener listener)`	Adds a listener to this notifier unless this notifier already `contains` the listener.
`void`	`fireEvent()`
`void`	`fireEvent(IEvent event)`
`void`	`fireEvent(IEvent event, IListener[] listeners)`
`protected void`	`fireThrowable(java.lang.Throwable throwable)`
`protected void`	`firstListenerAdded()`
`IListener[]`	`getListeners()`	Returns the listeners that are registered with this notifier.
`protected java.util.concurrent.ExecutorService`	`getNotificationService()`
`boolean`	`hasListener(IListener listener)`	Returns `true` if this notifier contains the listener, `false` otherwise.
`boolean`	`hasListeners()`	Returns `true` if one or more listeners are registered with this notifier, `false` otherwise.
`protected void`	`lastListenerRemoved()`
`protected void`	`listenerAdded(IListener listener)`
`protected void`	`listenerRemoved(IListener listener)`
`void`	`removeListener(IListener listener)`	Removes a listener from this notifier.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Notifier
```
public Notifier()
```
- Method Detail
  - addUniqueListener
```
public boolean addUniqueListener(IListener listener)
```
    Description copied from interface: INotifier.INotifier2
    
    Adds a listener to this notifier unless this notifier already contains the listener.
    
    Specified by:
    
    addUniqueListener in interface INotifier.INotifier2
  - addListener
```
public void addListener(IListener listener)
```
    Description copied from interface: INotifier
    
    Adds a listener to this notifier.
    Depending on the implementation duplicate listeners may lead to duplicate event delivery or not. Implementors are encouraged to prevent events from being delivered more than once to the same listener,
    
    Specified by:
    
    addListener in interface INotifier
  - removeListener
```
public void removeListener(IListener listener)
```
    Description copied from interface: INotifier
    
    Removes a listener from this notifier.
    
    Specified by:
    
    removeListener in interface INotifier
  - hasListener
```
public boolean hasListener(IListener listener)
```
    Description copied from interface: INotifier.INotifier2
    
    Returns true if this notifier contains the listener, false otherwise.
    
    Specified by:
    
    hasListener in interface INotifier.INotifier2
  - hasListeners
```
public boolean hasListeners()
```
    Description copied from interface: INotifier
    
    Returns true if one or more listeners are registered with this notifier, false otherwise.
    
    Specified by:
    
    hasListeners in interface INotifier
  - getListeners
```
public IListener[] getListeners()
```
    Description copied from interface: INotifier
    
    Returns the listeners that are registered with this notifier.
    Depending on the implementation duplicate listeners may be contained in the returned array.
    
    Specified by:
    
    getListeners in interface INotifier
  - fireEvent
```
public void fireEvent()
```
    Since:
    
    3.2
  - fireEvent
```
public void fireEvent(IEvent event)
```
  - fireEvent
```
public void fireEvent(IEvent event,
                      IListener[] listeners)
```
    Since:
    
    3.0
  - fireThrowable
```
protected void fireThrowable(java.lang.Throwable throwable)
```
    Since:
    
    3.3
  - getNotificationService
```
protected java.util.concurrent.ExecutorService getNotificationService()
```
    Since:
    
    3.0
  - listenerAdded
```
protected void listenerAdded(IListener listener)
```
    Since:
    
    3.13
  - listenerRemoved
```
protected void listenerRemoved(IListener listener)
```
    Since:
    
    3.13
  - firstListenerAdded
```
protected void firstListenerAdded()
```
    Since:
    
    3.0
  - lastListenerRemoved
```
protected void lastListenerRemoved()
```
    Since:
    
    3.0

Class Notifier

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.net4j.util.event.INotifier

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Notifier

Method Detail

addUniqueListener

addListener

removeListener

hasListener

hasListeners

getListeners

fireEvent

fireEvent

fireEvent

fireThrowable

getNotificationService

listenerAdded

listenerRemoved

firstListenerAdded

lastListenerRemoved