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-/* java.beans.VetoableChangeListener
- Copyright (C) 1998 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-As a special exception, if you link this library with other files to
-produce an executable, this library does not by itself cause the
-resulting executable to be covered by the GNU General Public License.
-This exception does not however invalidate any other reasons why the
-executable file might be covered by the GNU General Public License. */
-
-
-package java.beans;
-
-/**
- ** VetoableChangeListener allows a class to monitor
- ** proposed changes to properties of a Bean and, if
- ** desired, prevent them from occurring.<P>
- **
- ** A vetoableChange() event will be fired <EM>before</EM>
- ** the property has changed. If any listener rejects the
- ** change by throwing the PropertyChangeException, a new
- ** vetoableChange() event will be fired to all listeners
- ** who received a vetoableChange() event in the first
- ** place informing them of a reversion to the old value.
- ** The value, of course, never actually changed.<P>
- **
- ** <STRONG>Note:</STRONG> This class may not be reliably
- ** used to determine whether a property has actually
- ** changed. Use the PropertyChangeListener interface
- ** for that instead.
- **
- ** @author John Keiser
- ** @version 1.1.0, 29 Jul 1998
- ** @since JDK1.1
- ** @see java.beans.PropertyChangeListener
- ** @see java.beans.VetoableChangeSupport
- **/
-
-public interface VetoableChangeListener {
- /** Fired before a Bean's property changes.
- ** @param e the change (containing the old and new values)
- ** @exception PropertyChangeException if the listener
- ** does not desire the change to be made.
- **/
- public abstract void vetoableChange(PropertyChangeEvent e) throws PropertyVetoException;
-}