0N/A/*
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
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0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
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0N/A */
0N/A
0N/Apackage java.util;
0N/A
0N/A/**
0N/A * An abstract wrapper class for an {@code EventListener} class
0N/A * which associates a set of additional parameters with the listener.
0N/A * Subclasses must provide the storage and accessor methods
0N/A * for the additional arguments or parameters.
0N/A * <p>
0N/A * For example, a bean which supports named properties
0N/A * would have a two argument method signature for adding
0N/A * a {@code PropertyChangeListener} for a property:
0N/A * <pre>
0N/A * public void addPropertyChangeListener(String propertyName,
0N/A * PropertyChangeListener listener)
0N/A * </pre>
0N/A * If the bean also implemented the zero argument get listener method:
0N/A * <pre>
0N/A * public PropertyChangeListener[] getPropertyChangeListeners()
0N/A * </pre>
0N/A * then the array may contain inner {@code PropertyChangeListeners}
0N/A * which are also {@code PropertyChangeListenerProxy} objects.
0N/A * <p>
0N/A * If the calling method is interested in retrieving the named property
0N/A * then it would have to test the element to see if it is a proxy class.
0N/A *
0N/A * @since 1.4
0N/A */
0N/Apublic abstract class EventListenerProxy<T extends EventListener>
0N/A implements EventListener {
0N/A
0N/A private final T listener;
0N/A
0N/A /**
0N/A * Creates a proxy for the specified listener.
0N/A *
0N/A * @param listener the listener object
0N/A */
0N/A public EventListenerProxy(T listener) {
0N/A this.listener = listener;
0N/A }
0N/A
0N/A /**
0N/A * Returns the listener associated with the proxy.
0N/A *
0N/A * @return the listener associated with the proxy
0N/A */
0N/A public T getListener() {
0N/A return this.listener;
0N/A }
0N/A}