This puppy's been in yohoho for a while, but seems like it would be generally useful in narya land.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5776 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/dobj/NamedSetAdapter.java

@@ -0,0 +1,78 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2009 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.presents.dobj;
+
+/**
+ * A SetAdapter that listens for changes with a given name and calls the 'named' version of the
+ * SetListener methods when they occur.
+ */
+public class NamedSetAdapter<T extends DSet.Entry> extends SetAdapter<T>
+{
+    /**
+     * Listen for DSet events with the given name.
+     */
+    public NamedSetAdapter (String name)
+    {
+        _name = name;
+    }
+
+    @Override
+    final public void entryAdded (EntryAddedEvent<T> event)
+    {
+        if (event.getName().equals(_name)) {
+            namedEntryAdded(event);
+        }
+    }
+
+    public void namedEntryAdded (EntryAddedEvent<T> event)
+    {
+        // Override to provide functionality
+    }
+
+    @Override
+    final public void entryRemoved (EntryRemovedEvent<T> event)
+    {
+        if (event.getName().equals(_name)) {
+            namedEntryRemoved(event);
+        }
+    }
+
+    public void namedEntryRemoved (EntryRemovedEvent<T> event)
+    {
+
+    }
+
+    @Override
+    final public void entryUpdated (EntryUpdatedEvent<T> event)
+    {
+        if (event.getName().equals(_name)) {
+            namedEntryUpdated(event);
+        }
+    }
+
+    public void namedEntryUpdated (EntryUpdatedEvent<T> event)
+    {
+
+    }
+
+    protected final String _name;
+}