javax.swing.event
Class SwingPropertyChangeSupport

java.lang.Object
  java.beans.PropertyChangeSupport
      javax.swing.event.SwingPropertyChangeSupport

All Implemented Interfaces:

Serializable

public final class SwingPropertyChangeSupport
extends PropertyChangeSupport

This subclass of java.beans.PropertyChangeSupport is almost identical in functionality. The only difference is if constructed with SwingPropertyChangeSupport(sourceBean, true) it ensures listeners are only ever notified on the Event Dispatch Thread . This subclass of java.beans.PropertyChangeSupport is identical in functionality -- it sacrifices thread-safety (not a Swing concern) for reduce memory consumption, which helps performance (both big Swing concerns). Most of the overridden methods are only necessary because all of PropertyChangeSupport's instance data is private, without accessor methods.

Constructor Summary
SwingPropertyChangeSupport ( Object  sourceBean)           Constructs a SwingPropertyChangeSupport object.
SwingPropertyChangeSupport ( Object           Constructs a SwingPropertyChangeSupport object.

 

Method Summary
void	firePropertyChange ( PropertyChangeEvent           Fire an existing PropertyChangeEvent to any registered listeners.
boolean	isNotifyOnEDT ()           Returns notifyOnEDT property.

 

Methods inherited from class java.beans. PropertyChangeSupport
addPropertyChangeListener , addPropertyChangeListener , fireIndexedPropertyChange , fireIndexedPropertyChange , fireIndexedPropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , getPropertyChangeListeners , getPropertyChangeListeners , hasListeners , removePropertyChangeListener , removePropertyChangeListener

 

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

 

Constructor Detail

SwingPropertyChangeSupport

public SwingPropertyChangeSupport(Object sourceBean)

Constructs a SwingPropertyChangeSupport object.

Parameters:

sourceBean - The bean to be given as the source for any events.

Throws:

NullPointerException - if sourceBean is null

SwingPropertyChangeSupport

 
public SwingPropertyChangeSupport ( Object sourceBean,
 boolean notifyOnEDT) 

Constructs a SwingPropertyChangeSupport object.

Parameters:

sourceBean - the bean to be given as the source for any events

notifyOnEDT - whether to notify listeners on the Event Dispatch Thread only

Throws:

NullPointerException - if sourceBean is null

Since:

1.6

Method Detail

firePropertyChange

 
public void firePropertyChange ( PropertyChangeEvent evt) 

Fire an existing PropertyChangeEvent to any registered listeners. No event is fired if the given event's old and new values are equal and non-null.

If isNotifyOnEDT() is true and called off the Event Dispatch Thread this implementation uses SwingUtilities.invokeLater to send out the notification on the Event Dispatch Thread . This ensures listeners are only ever notified on the Event Dispatch Thread .

Overrides:

firePropertyChange in class PropertyChangeSupport

Parameters:

evt - The PropertyChangeEvent object.

Throws:

NullPointerException - if evt is null

Since:

1.6

isNotifyOnEDT

 
public final boolean isNotifyOnEDT () 

Returns notifyOnEDT property.

Returns:

notifyOnEDT property

Since:

1.6

See Also:

SwingPropertyChangeSupport(Object sourceBean, boolean notifyOnEDT)