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85 lines
2.1 KiB
85 lines
2.1 KiB
/*
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* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.beans;
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import java.util.EventListenerProxy;
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/**
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* A class which extends the {@code EventListenerProxy}
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* specifically for adding a {@code VetoableChangeListener}
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* with a "constrained" property.
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* Instances of this class can be added
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* as {@code VetoableChangeListener}s to a bean
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* which supports firing vetoable change events.
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* <p>
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* If the object has a {@code getVetoableChangeListeners} method
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* then the array returned could be a mixture of {@code VetoableChangeListener}
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* and {@code VetoableChangeListenerProxy} objects.
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*
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* @see java.util.EventListenerProxy
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* @see VetoableChangeSupport#getVetoableChangeListeners
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* @since 1.4
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*/
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public class VetoableChangeListenerProxy
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extends EventListenerProxy<VetoableChangeListener>
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implements VetoableChangeListener {
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private final String propertyName;
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/**
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* Constructor which binds the {@code VetoableChangeListener}
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* to a specific property.
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*
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* @param propertyName the name of the property to listen on
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* @param listener the listener object
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*/
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public VetoableChangeListenerProxy(String propertyName, VetoableChangeListener listener) {
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super(listener);
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this.propertyName = propertyName;
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}
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/**
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* Forwards the property change event to the listener delegate.
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*
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* @param event the property change event
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*
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* @exception PropertyVetoException if the recipient wishes the property
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* change to be rolled back
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*/
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public void vetoableChange(PropertyChangeEvent event) throws PropertyVetoException{
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getListener().vetoableChange(event);
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}
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/**
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* Returns the name of the named property associated with the listener.
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*
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* @return the name of the named property associated with the listener
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*/
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public String getPropertyName() {
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return this.propertyName;
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}
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}
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