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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/util/prefs/NodeChangeEvent.java | |
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Diffstat (limited to 'libjava/classpath/java/util/prefs/NodeChangeEvent.java')
-rw-r--r-- | libjava/classpath/java/util/prefs/NodeChangeEvent.java | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/libjava/classpath/java/util/prefs/NodeChangeEvent.java b/libjava/classpath/java/util/prefs/NodeChangeEvent.java new file mode 100644 index 000000000..5bdeb3346 --- /dev/null +++ b/libjava/classpath/java/util/prefs/NodeChangeEvent.java @@ -0,0 +1,111 @@ +/* NodeChangeEvent - ObjectEvent fired when a Preference node is added/removed + Copyright (C) 2001, 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.util.prefs; + +import java.io.IOException; +import java.io.NotSerializableException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.util.EventObject; + +/** + * ObjectEvent fired when a Preference node is added/removed. + * This event is only generated when a new subnode is added or a subnode is + * removed from a preference node. Changes in the entries of a preference node + * are indicated with a <code>PreferenceChangeEvent</code>. + * <p> + * Note that although this class is marked as serializable, attempts to + * serialize it will fail with NotSerializableException. + * + * @since 1.4 + * @author Mark Wielaard (mark@klomp.org) + */ +public class NodeChangeEvent extends EventObject { + + // We have this to placate the compiler. + private static final long serialVersionUID =8068949086596572957L; + + /** + * The sub node that was added or removed. + * Defined transient just like <code>EventObject.source</code> since + * this object should be serializable, but Preferences is in general not + * serializable. + */ + private final transient Preferences child; + + /** + * Creates a new NodeChangeEvent. + * + * @param parentNode The source preference node from which a subnode was + * added or removed + * @param childNode The preference node that was added or removed + */ + public NodeChangeEvent(Preferences parentNode, Preferences childNode) { + super(parentNode); + child = childNode; + } + + /** + * Returns the source parent preference node from which a subnode was + * added or removed. + */ + public Preferences getParent() { + return (Preferences) source; + } + + /** + * Returns the child preference subnode that was added or removed. + * To see wether it is still a valid preference node one has to call + * <code>event.getChild().nodeExists("")</code>. + */ + public Preferences getChild() { + return child; + } + + private void readObject(ObjectInputStream ois) + throws IOException + { + throw new NotSerializableException("LineEvent is not serializable"); + } + + private void writeObject(ObjectOutputStream oos) + throws IOException + { + throw new NotSerializableException("LineEvent is not serializable"); + } +} |