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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/util/prefs/NodeChangeEvent.java
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+/* 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");
+ }
+}