1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/emul/compact/src/main/java/java/util/EventListenerProxy.java	Mon Jan 28 18:12:47 2013 +0100
     1.3 @@ -0,0 +1,75 @@
     1.4 +/*
     1.5 + * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.  Oracle designates this
    1.11 + * particular file as subject to the "Classpath" exception as provided
    1.12 + * by Oracle in the LICENSE file that accompanied this code.
    1.13 + *
    1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.16 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.17 + * version 2 for more details (a copy is included in the LICENSE file that
    1.18 + * accompanied this code).
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License version
    1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.23 + *
    1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.25 + * or visit www.oracle.com if you need additional information or have any
    1.26 + * questions.
    1.27 + */
    1.28 +
    1.29 +package java.util;
    1.30 +
    1.31 +/**
    1.32 + * An abstract wrapper class for an {@code EventListener} class
    1.33 + * which associates a set of additional parameters with the listener.
    1.34 + * Subclasses must provide the storage and accessor methods
    1.35 + * for the additional arguments or parameters.
    1.36 + * <p>
    1.37 + * For example, a bean which supports named properties
    1.38 + * would have a two argument method signature for adding
    1.39 + * a {@code PropertyChangeListener} for a property:
    1.40 + * <pre>
    1.41 + * public void addPropertyChangeListener(String propertyName,
    1.42 + *                                       PropertyChangeListener listener)
    1.43 + * </pre>
    1.44 + * If the bean also implemented the zero argument get listener method:
    1.45 + * <pre>
    1.46 + * public PropertyChangeListener[] getPropertyChangeListeners()
    1.47 + * </pre>
    1.48 + * then the array may contain inner {@code PropertyChangeListeners}
    1.49 + * which are also {@code PropertyChangeListenerProxy} objects.
    1.50 + * <p>
    1.51 + * If the calling method is interested in retrieving the named property
    1.52 + * then it would have to test the element to see if it is a proxy class.
    1.53 + *
    1.54 + * @since 1.4
    1.55 + */
    1.56 +public abstract class EventListenerProxy<T extends EventListener>
    1.57 +        implements EventListener {
    1.58 +
    1.59 +    private final T listener;
    1.60 +
    1.61 +    /**
    1.62 +     * Creates a proxy for the specified listener.
    1.63 +     *
    1.64 +     * @param listener  the listener object
    1.65 +     */
    1.66 +    public EventListenerProxy(T listener) {
    1.67 +        this.listener = listener;
    1.68 +    }
    1.69 +
    1.70 +    /**
    1.71 +     * Returns the listener associated with the proxy.
    1.72 +     *
    1.73 +     * @return  the listener associated with the proxy
    1.74 +     */
    1.75 +    public T getListener() {
    1.76 +        return this.listener;
    1.77 +    }
    1.78 +}