java.beans

Class VetoableChangeListenerProxy

java.lang.Object

java.util.EventListenerProxy

java.beans.VetoableChangeListenerProxy

All Implemented Interfaces:

VetoableChangeListener, EventListener

public class VetoableChangeListenerProxy
extends EventListenerProxy
implements VetoableChangeListener

This class provides an extension to VetoableChangeListener - associating a name with the listener. This can be used to filter the changes that one is interested in.

Since:

1.4

Constructor Summary

Constructors

Constructor and Description
VetoableChangeListenerProxy(String propertyName, VetoableChangeListener listener) Create a new proxy which filters property change events and only passes changes to the named property on to the delegate.

Method Summary

Methods

Modifier and Type	Method and Description
String	getPropertyName() Gets the name of the property this proxy is filtering on.
void	vetoableChange(PropertyChangeEvent event) Forwards the event on to the delegate if the property name matches.

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)

Create a new proxy which filters property change events and only passes changes to the named property on to the delegate.

Parameters:

propertyName - the property's name to filter on

listener - the delegate listener

Method Detail

vetoableChange

public void vetoableChange(PropertyChangeEvent event)
                    throws PropertyVetoException

Forwards the event on to the delegate if the property name matches.

Specified by:

vetoableChange in interface VetoableChangeListener

Parameters:

event - the event to pass on, if it meets the filter

Throws:

NullPointerException - if the delegate this was created with is null

PropertyVetoException - if the change is vetoed by the listener

getPropertyName

public String getPropertyName()

Gets the name of the property this proxy is filtering on.

Returns:

the property name