Package org.eclipse.net4j.util.event
Class Notifier
- java.lang.Object
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- org.eclipse.net4j.util.event.Notifier
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- 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 anotifier
.- Since:
- 3.0
- Author:
- Eike Stepper
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.eclipse.net4j.util.event.INotifier
INotifier.INotifier2
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Constructor Summary
Constructors Constructor Description Notifier()
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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 alreadycontains
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)
Returnstrue
if this notifier contains the listener,false
otherwise.boolean
hasListeners()
Returnstrue
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.
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Method Detail
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addUniqueListener
public boolean addUniqueListener(IListener listener)
Description copied from interface:INotifier.INotifier2
Adds a listener to this notifier unless this notifier alreadycontains
the listener.- Specified by:
addUniqueListener
in interfaceINotifier.INotifier2
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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 interfaceINotifier
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removeListener
public void removeListener(IListener listener)
Description copied from interface:INotifier
Removes a listener from this notifier.- Specified by:
removeListener
in interfaceINotifier
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hasListener
public boolean hasListener(IListener listener)
Description copied from interface:INotifier.INotifier2
Returnstrue
if this notifier contains the listener,false
otherwise.- Specified by:
hasListener
in interfaceINotifier.INotifier2
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hasListeners
public boolean hasListeners()
Description copied from interface:INotifier
Returnstrue
if one or more listeners are registered with this notifier,false
otherwise.- Specified by:
hasListeners
in interfaceINotifier
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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 interfaceINotifier
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fireEvent
public void fireEvent()
- Since:
- 3.2
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fireEvent
public void fireEvent(IEvent event)
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fireThrowable
protected void fireThrowable(java.lang.Throwable throwable)
- Since:
- 3.3
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getNotificationService
protected java.util.concurrent.ExecutorService getNotificationService()
- Since:
- 3.0
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listenerAdded
protected void listenerAdded(IListener listener)
- Since:
- 3.13
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listenerRemoved
protected void listenerRemoved(IListener listener)
- Since:
- 3.13
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firstListenerAdded
protected void firstListenerAdded()
- Since:
- 3.0
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lastListenerRemoved
protected void lastListenerRemoved()
- Since:
- 3.0
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