--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/ChartOutputTab.java	Wed Jun 01 13:43:35 2011 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/ChartOutputTab.java	Wed Jun 01 14:13:29 2011 +0000
@@ -20,6 +20,8 @@
 import de.intevation.flys.client.client.Config;
 import de.intevation.flys.client.client.event.OutputParameterChangeEvent;
 import de.intevation.flys.client.client.event.OutputParameterChangeHandler;
+import de.intevation.flys.client.client.event.ZoomEvent;
+import de.intevation.flys.client.client.event.ZoomHandler;
 import de.intevation.flys.client.client.services.ChartInfoService;
 import de.intevation.flys.client.client.services.ChartInfoServiceAsync;
 import de.intevation.flys.client.client.ui.CollectionView;
@@ -31,7 +33,7 @@
  */
 public class ChartOutputTab
 extends      OutputTab
-implements   ResizedHandler, OutputParameterChangeHandler
+implements   ResizedHandler, OutputParameterChangeHandler, ZoomHandler
 {
     public static final int DEFAULT_CHART_WIDTH  = 600;
     public static final int DEFAULT_CHART_HEIGHT = 500;
@@ -135,6 +137,24 @@
 
 
     /**
+     * Listens to zoom events and refreshes the current chart in such case.
+     *
+     * @param evt The ZoomEvent that stores the coordinates for zooming.
+     */
+    public void onZoom(ZoomEvent evt) {
+        double[] lower = transformer.transform(evt.getStartX(), evt.getStartY());
+        double[] upper = transformer.transform(evt.getEndX(), evt.getEndY());
+
+        double xmin = lower[0];
+        double xmax = upper[0];
+        double ymin = upper[1];
+        double ymax = lower[1];
+
+        // TODO Trigger the recreation of the chart
+    }
+
+
+    /**
      * Updates the Transform2D object using the chart info service.
      */
     public void updateTransformer() {