mirror of git://gcc.gnu.org/git/gcc.git
112 lines
4.0 KiB
Java
112 lines
4.0 KiB
Java
/* NodeChangeEvent - ObjectEvent fired when a Preference node is added/removed
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Copyright (C) 2001, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.util.prefs;
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import java.io.IOException;
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import java.io.NotSerializableException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.util.EventObject;
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/**
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* ObjectEvent fired when a Preference node is added/removed.
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* This event is only generated when a new subnode is added or a subnode is
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* removed from a preference node. Changes in the entries of a preference node
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* are indicated with a <code>PreferenceChangeEvent</code>.
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* <p>
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* Note that although this class is marked as serializable, attempts to
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* serialize it will fail with NotSerializableException.
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*
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* @since 1.4
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* @author Mark Wielaard (mark@klomp.org)
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*/
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public class NodeChangeEvent extends EventObject {
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// We have this to placate the compiler.
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private static final long serialVersionUID =8068949086596572957L;
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/**
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* The sub node that was added or removed.
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* Defined transient just like <code>EventObject.source</code> since
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* this object should be serializable, but Preferences is in general not
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* serializable.
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*/
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private final transient Preferences child;
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/**
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* Creates a new NodeChangeEvent.
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*
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* @param parentNode The source preference node from which a subnode was
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* added or removed
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* @param childNode The preference node that was added or removed
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*/
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public NodeChangeEvent(Preferences parentNode, Preferences childNode) {
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super(parentNode);
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child = childNode;
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}
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/**
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* Returns the source parent preference node from which a subnode was
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* added or removed.
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*/
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public Preferences getParent() {
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return (Preferences) source;
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}
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/**
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* Returns the child preference subnode that was added or removed.
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* To see wether it is still a valid preference node one has to call
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* <code>event.getChild().nodeExists("")</code>.
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*/
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public Preferences getChild() {
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return child;
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}
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private void readObject(ObjectInputStream ois)
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throws IOException
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{
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throw new NotSerializableException("LineEvent is not serializable");
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}
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private void writeObject(ObjectOutputStream oos)
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throws IOException
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{
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throw new NotSerializableException("LineEvent is not serializable");
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}
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}
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