--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/raster/DemuxRingsHandler.java	Fri Sep 28 12:14:00 2012 +0200
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2010 by Intevation GmbH
+ *
+ * This program is free software under the LGPL (>=v2.1)
+ * Read the file LGPL.txt coming with the software for details
+ * or visit http://www.gnu.org/licenses/ if it does not exist.
+ */
+
+package de.intevation.gnv.raster;
+
+import de.intevation.gnv.raster.Vectorizer.Edge;
+import de.intevation.gnv.raster.Vectorizer.RingsHandler;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Ring Handler that demultiplexes to a list of other ring handlers.
+ * Handy if you want to pipe the polygons and line strings produced
+ * by the Vectorize to more than one handler at once.
+ *
+ * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
+ */
+public class DemuxRingsHandler
+implements   RingsHandler
+{
+    /**
+     * The list of internal ring handlers.
+     */
+    protected ArrayList<RingsHandler> handlers;
+
+    /**
+     * Default constructor.
+     */
+    public DemuxRingsHandler() {
+        handlers = new ArrayList<RingsHandler>();
+    }
+
+    /**
+     * Add a ring handler to the list of handlers.
+     * @param handler The handler to add to the internal list.
+     */
+    public void addHandler(RingsHandler handler) {
+        handlers.add(handler);
+    }
+
+    public void handleRings(
+        List<Edge> rings,
+        int        value,
+        int        width,
+        int        height
+    ) {
+        for (RingsHandler handler: handlers) {
+            handler.handleRings(rings, value, width, height);
+        }
+    }
+
+    /**
+     * Empties the internal list of ring handlers.
+     */
+    public void clear() {
+        handlers.clear();
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :