rt/emul/compact/src/main/java/java/beans/VetoableChangeListenerProxy.java
changeset 772 d382dacfd73f
parent 601 5198affdb915
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/rt/emul/compact/src/main/java/java/beans/VetoableChangeListenerProxy.java	Tue Feb 26 16:54:16 2013 +0100
     1.3 @@ -0,0 +1,84 @@
     1.4 +/*
     1.5 + * Copyright (c) 2000, 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.beans;
    1.30 +
    1.31 +import java.util.EventListenerProxy;
    1.32 +
    1.33 +/**
    1.34 + * A class which extends the {@code EventListenerProxy}
    1.35 + * specifically for adding a {@code VetoableChangeListener}
    1.36 + * with a "constrained" property.
    1.37 + * Instances of this class can be added
    1.38 + * as {@code VetoableChangeListener}s to a bean
    1.39 + * which supports firing vetoable change events.
    1.40 + * <p>
    1.41 + * If the object has a {@code getVetoableChangeListeners} method
    1.42 + * then the array returned could be a mixture of {@code VetoableChangeListener}
    1.43 + * and {@code VetoableChangeListenerProxy} objects.
    1.44 + *
    1.45 + * @see java.util.EventListenerProxy
    1.46 + * @see VetoableChangeSupport#getVetoableChangeListeners
    1.47 + * @since 1.4
    1.48 + */
    1.49 +public class VetoableChangeListenerProxy
    1.50 +        extends EventListenerProxy<VetoableChangeListener>
    1.51 +        implements VetoableChangeListener {
    1.52 +
    1.53 +    private final String propertyName;
    1.54 +
    1.55 +    /**
    1.56 +     * Constructor which binds the {@code VetoableChangeListener}
    1.57 +     * to a specific property.
    1.58 +     *
    1.59 +     * @param propertyName  the name of the property to listen on
    1.60 +     * @param listener      the listener object
    1.61 +     */
    1.62 +    public VetoableChangeListenerProxy(String propertyName, VetoableChangeListener listener) {
    1.63 +        super(listener);
    1.64 +        this.propertyName = propertyName;
    1.65 +    }
    1.66 +
    1.67 +    /**
    1.68 +    * Forwards the property change event to the listener delegate.
    1.69 +    *
    1.70 +    * @param event  the property change event
    1.71 +    *
    1.72 +    * @exception PropertyVetoException if the recipient wishes the property
    1.73 +    *                                  change to be rolled back
    1.74 +    */
    1.75 +    public void vetoableChange(PropertyChangeEvent event) throws PropertyVetoException{
    1.76 +        getListener().vetoableChange(event);
    1.77 +    }
    1.78 +
    1.79 +    /**
    1.80 +     * Returns the name of the named property associated with the listener.
    1.81 +     *
    1.82 +     * @return the name of the named property associated with the listener
    1.83 +     */
    1.84 +    public String getPropertyName() {
    1.85 +        return this.propertyName;
    1.86 +    }
    1.87 +}