java.beans
Class VetoableChangeListenerProxy

java.lang.Object
  java.util.EventListenerProxy
      java.beans.VetoableChangeListenerProxy

All Implemented Interfaces:

EventListener, VetoableChangeListener

public class VetoableChangeListenerProxy

extends EventListenerProxy

implements VetoableChangeListener

A class which extends the EventListenerProxy specifically for associating a VetoableChangeListener with a "constrained" property. Instances of this class can be added as a VetoableChangeListener to a bean which supports firing VetoableChange events.

If the object has a getVetoableChangeListeners() method then the array returned could be a mixture of VetoableChangeListener and VetoableChangeListenerProxy objects.

Since:

1.4

See Also:

EventListenerProxy, VetoableChangeListener, VetoableChangeSupport.getVetoableChangeListeners()

Constructor Summary

VetoableChangeListenerProxy(String propertyName, VetoableChangeListener listener)

Method Summary

String	getPropertyName() Returns the name of the named property associated with the listener.
void	vetoableChange(PropertyChangeEvent evt) Forwards the property change event to the listener delegate.

Methods inherited from class java.util.EventListenerProxy

getListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VetoableChangeListenerProxy

public VetoableChangeListenerProxy(String propertyName,
                                   VetoableChangeListener listener)

Parameters:

propertyName - The name of the property to listen on.

listener - The listener object

Method Detail

vetoableChange

public void vetoableChange(PropertyChangeEvent evt)
                    throws PropertyVetoException

Forwards the property change event to the listener delegate.

Specified by:

vetoableChange in interface VetoableChangeListener

Parameters:

evt - the property change event

Throws:

PropertyVetoException - if the recipient wishes the property change to be rolled back.

getPropertyName

public String getPropertyName()

Returns the name of the named property associated with the listener.