Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Swing 1.1
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## javax.swing.event
Class SwingPropertyChangeSupport

    java.lang.Object
      |
      +--java.beans.PropertyChangeSupport
            |
            +--javax.swing.event.SwingPropertyChangeSupport

public final class SwingPropertyChangeSupport
extends java.beans.PropertyChangeSupport

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.

See Also:
  Serialized Form

Constructor Summary
`SwingPropertyChangeSupport(java.lang.Object sourceBean)` Constructs a SwingPropertyChangeSupport object.

Method Summary
`void` | `addPropertyChangeListener(java.beans.PropertyChangeListener listener)` Add a PropertyChangeListener to the listener list.
`void` | `addPropertyChangeListener(java.lang.String propertyName, java.beans.PropertyChangeListener listener)` Add a PropertyChangeListener for a specific property.
`void` | `firePropertyChange(java.beans.PropertyChangeEvent evt)` Fire an existing PropertyChangeEvent to any registered listeners.
`void` | `firePropertyChange(java.lang.String propertyName, java.lang.Object oldValue, java.lang.Object newValue)` Report a bound property update to any registered listeners.
`boolean` | `hasListeners(java.lang.String propertyName)` Check if there are any listeners for a specific property.
`void` | `removePropertyChangeListener(java.beans.PropertyChangeListener listener)` Remove a PropertyChangeListener from the listener list.
`void` | `removePropertyChangeListener(java.lang.String propertyName, java.beans.PropertyChangeListener listener)` Remove a PropertyChangeListener for a specific property.

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

Constructor Detail

### SwingPropertyChangeSupport

    public SwingPropertyChangeSupport(java.lang.Object sourceBean)

  Constructs a SwingPropertyChangeSupport object.
  Parameters:
    `sourceBean` - The bean to be given as the source for any events.

Method Detail

### addPropertyChangeListener

    public void addPropertyChangeListener(java.beans.PropertyChangeListener listener)

  Add a PropertyChangeListener to the listener list. The listener is registered for all properties.
  Parameters:
    `listener` - The PropertyChangeListener to be added
  Overrides:
    addPropertyChangeListener in class java.beans.PropertyChangeSupport

### removePropertyChangeListener

    public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)

  Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties.
  Parameters:
    `listener` - The PropertyChangeListener to be removed
  Overrides:
    removePropertyChangeListener in class java.beans.PropertyChangeSupport

### addPropertyChangeListener

    public void addPropertyChangeListener(java.lang.String propertyName,
                                          java.beans.PropertyChangeListener listener)

  Add a PropertyChangeListener for a specific property. The listener will be invoked only when a call on firePropertyChange names that specific property.
  Parameters:
    `propertyName` - The name of the property to listen on.
    `listener` - The PropertyChangeListener to be added

### removePropertyChangeListener

    public void removePropertyChangeListener(java.lang.String propertyName,
                                             java.beans.PropertyChangeListener listener)

  Remove a PropertyChangeListener for a specific property.
  Parameters:
    `propertyName` - The name of the property that was listened on.
    `listener` - The PropertyChangeListener to be removed

### firePropertyChange

    public void firePropertyChange(java.lang.String propertyName,
                                   java.lang.Object oldValue,
                                   java.lang.Object newValue)

  Report a bound property update to any registered listeners. No event is fired if old and new are equal and non-null.
  Parameters:
    `propertyName` - The programmatic name of the property that was changed.
    `oldValue` - The old value of the property.
    `newValue` - The new value of the property.
  Overrides:
    firePropertyChange in class java.beans.PropertyChangeSupport

### firePropertyChange

    public void firePropertyChange(java.beans.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.
  Parameters:
    `evt` - The PropertyChangeEvent object.

### hasListeners

    public boolean hasListeners(java.lang.String propertyName)

  Check if there are any listeners for a specific property.
  Parameters:
    `propertyName` - the property name.
  Returns:
    true if there are ore or more listeners for the given property

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Swing 1.1
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Submit a bug or feature
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.
Copyright 1993-1998 Sun Microsystems, Inc. 901 San Antonio Road,
Palo Alto, California, 94303, U.S.A. All Rights Reserved.