Added zone adapter.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1934 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/whirled/zone/client/ZoneAdapter.java

@@ -0,0 +1,33 @@
+//
+// $Id: ZoneAdapter.java,v 1.1 2002/11/12 19:53:35 shaper Exp $
+
+package com.threerings.whirled.zone.client;
+
+import com.threerings.whirled.zone.data.ZoneSummary;
+
+/**
+ * The zone adapter makes life easier for a class that really only cares
+ * about one or two of the zone observer callbacks and doesn't want to
+ * provide empty implementations of the others. One can either extend zone
+ * adapter, or create an anonymous instance that overrides the desired
+ * callback(s).
+ *
+ * @see ZoneObserver
+ */
+public class ZoneAdapter implements ZoneObserver
+{
+    // documentation inherited from interface
+    public void zoneWillChange (int zoneId)
+    {
+    }
+
+    // documentation inherited from interface
+    public void zoneDidChange (ZoneSummary summary)
+    {
+    }
+
+    // documentation inherited from interface
+    public void zoneChangeFailed (String reason)
+    {
+    }
+}