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Java/ZZObs.java

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+/*   
+ZZObs.java
+ *    
+ *    Copyright (c) 1999-2000, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software 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 README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuomas Lukka
+ */
+
+package org.gzigzag;
+/** A simple class that observes something.
+ * This class cannot distinguish what caused the event - either
+ * the event has to be filtered prior to this or the whole thing reread
+ * in any case.
+ */
+
+public interface ZZObs {
+String rcsid = "$Id: ZZObs.java,v 1.11 2000/09/19 10:31:58 ajk Exp $";
+    /** Called when something is changed.
+     */
+    void chg();
+}