jaroslav@601: /*
jaroslav@601:  * Copyright (c) 1996, 1997, Oracle and/or its affiliates. All rights reserved.
jaroslav@601:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jaroslav@601:  *
jaroslav@601:  * This code is free software; you can redistribute it and/or modify it
jaroslav@601:  * under the terms of the GNU General Public License version 2 only, as
jaroslav@601:  * published by the Free Software Foundation.  Oracle designates this
jaroslav@601:  * particular file as subject to the "Classpath" exception as provided
jaroslav@601:  * by Oracle in the LICENSE file that accompanied this code.
jaroslav@601:  *
jaroslav@601:  * This code is distributed in the hope that it will be useful, but WITHOUT
jaroslav@601:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jaroslav@601:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jaroslav@601:  * version 2 for more details (a copy is included in the LICENSE file that
jaroslav@601:  * accompanied this code).
jaroslav@601:  *
jaroslav@601:  * You should have received a copy of the GNU General Public License version
jaroslav@601:  * 2 along with this work; if not, write to the Free Software Foundation,
jaroslav@601:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jaroslav@601:  *
jaroslav@601:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jaroslav@601:  * or visit www.oracle.com if you need additional information or have any
jaroslav@601:  * questions.
jaroslav@601:  */
jaroslav@601: 
jaroslav@601: package java.beans;
jaroslav@601: 
jaroslav@601: /**
jaroslav@601:  * A VetoableChange event gets fired whenever a bean changes a "constrained"
jaroslav@601:  * property.  You can register a VetoableChangeListener with a source bean
jaroslav@601:  * so as to be notified of any constrained property updates.
jaroslav@601:  */
jaroslav@601: public interface VetoableChangeListener extends java.util.EventListener {
jaroslav@601:     /**
jaroslav@601:      * This method gets called when a constrained property is changed.
jaroslav@601:      *
jaroslav@601:      * @param     evt a <code>PropertyChangeEvent</code> object describing the
jaroslav@601:      *                event source and the property that has changed.
jaroslav@601:      * @exception PropertyVetoException if the recipient wishes the property
jaroslav@601:      *              change to be rolled back.
jaroslav@601:      */
jaroslav@601:     void vetoableChange(PropertyChangeEvent evt)
jaroslav@601:                                 throws PropertyVetoException;
jaroslav@601: }