--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/map/MapThemePanel.java	Fri Oct 28 06:12:51 2011 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/map/MapThemePanel.java	Mon Oct 31 11:52:42 2011 +0000
@@ -12,6 +12,10 @@
 import com.smartgwt.client.widgets.grid.ListGridRecord;
 import com.smartgwt.client.widgets.layout.HLayout;
 import com.smartgwt.client.widgets.layout.VLayout;
+import com.smartgwt.client.widgets.menu.Menu;
+import com.smartgwt.client.widgets.menu.MenuItem;
+import com.smartgwt.client.widgets.menu.events.ClickHandler;
+import com.smartgwt.client.widgets.menu.events.MenuItemClickEvent;
 
 import de.intevation.flys.client.shared.MapUtils;
 import de.intevation.flys.client.shared.model.AttributedTheme;
@@ -42,6 +46,10 @@
         void onThemeMoved(Theme theme, int oldIdx, int newIdx);
     }
 
+    public interface LayerZoomCallback {
+        void onLayerZoom(Theme theme, String extent);
+    }
+
 
 
     private FLYSConstants MSG = GWT.create(FLYSConstants.class);
@@ -49,6 +57,7 @@
 
     protected ActivateCallback   activateCallback;
     protected ThemeMovedCallback themeMovedCallback;
+    protected LayerZoomCallback  layerZoomCallback;
 
 
     public static final String GRID_FIELD_ACTIVE = "active";
@@ -64,7 +73,7 @@
         OutputMode         mode,
         ActivateCallback   activateCallback
     ) {
-        this(collection, mode, activateCallback, null);
+        this(collection, mode, activateCallback, null, null);
     }
 
 
@@ -72,12 +81,14 @@
         Collection         collection,
         OutputMode         mode,
         ActivateCallback   activateCallback,
-        ThemeMovedCallback themeMovedCallback
+        ThemeMovedCallback themeMovedCallback,
+        LayerZoomCallback  layerZoomCallback
     ) {
         super(collection, mode);
 
         this.activateCallback   = activateCallback;
         this.themeMovedCallback = themeMovedCallback;
+        this.layerZoomCallback  = layerZoomCallback;
 
         initGrid();
         initLayout();
@@ -173,6 +184,43 @@
 
 
     @Override
+    protected Menu getSingleContextMenu(final ListGridRecord[] records) {
+        Menu menu = super.getSingleContextMenu(records);
+
+        MenuItem layerZoom = createLayerZoomItem(records);
+        if (layerZoom != null) {
+            menu.addItem(layerZoom);
+        }
+
+        return menu;
+    }
+
+
+    protected MenuItem createLayerZoomItem(final ListGridRecord[] recs) {
+        final FacetRecord     fr = (FacetRecord) recs[0];
+        final AttributedTheme at = (AttributedTheme) fr.getTheme();
+
+        final String extent = at.getAttr("extent");
+
+        if (extent == null || extent.length() == 0) {
+            return null;
+        }
+
+        MenuItem zoom = new MenuItem(MSG.zoomToLayer());
+        zoom.addClickHandler(new ClickHandler() {
+            @Override
+            public void onClick(MenuItemClickEvent evt) {
+                if (layerZoomCallback != null) {
+                    layerZoomCallback.onLayerZoom(at, extent);
+                }
+            }
+        });
+
+        return zoom;
+    }
+
+
+    @Override
     public void activateTheme(Theme theme, boolean active) {
         if (activateCallback != null) {
             activateCallback.activate(theme, active);