Index: /applications/editors/josm/plugins/indoor_sweepline/src/indoor_sweepline/IndoorSweeplineWizardAction.java
===================================================================
--- /applications/editors/josm/plugins/indoor_sweepline/src/indoor_sweepline/IndoorSweeplineWizardAction.java	(revision 35794)
+++ /applications/editors/josm/plugins/indoor_sweepline/src/indoor_sweepline/IndoorSweeplineWizardAction.java	(revision 35795)
@@ -12,22 +12,16 @@
 import org.openstreetmap.josm.gui.MainApplication;
 import org.openstreetmap.josm.gui.layer.Layer;
-import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
-import org.openstreetmap.josm.gui.layer.LayerManager.LayerChangeListener;
-import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
-import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
-import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent;
-import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeListener;
 import org.openstreetmap.josm.gui.layer.OsmDataLayer;
 
-public class IndoorSweeplineWizardAction extends JosmAction implements LayerChangeListener, ActiveLayerChangeListener {
+public class IndoorSweeplineWizardAction extends JosmAction {
 
     public IndoorSweeplineWizardAction() {
         super(tr("Concourse wizard ..."), null,
                 tr("Opens up a wizard to create a concourse"), null, false);
-        MainApplication.getLayerManager().addLayerChangeListener(this);
     }
 
     @Override
     public void actionPerformed(ActionEvent event) {
+        Layer layer = MainApplication.getLayerManager().getActiveLayer();
         if (layer == null)
             JOptionPane.showMessageDialog(JOptionPane.getFrameForComponent(MainApplication.getMainFrame()),
@@ -46,24 +40,3 @@
                     ProjectionRegistry.getProjection().eastNorth2latlon(MainApplication.getMap().mapView.getCenter()));
     }
-
-    @Override
-    public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
-        layer = MainApplication.getLayerManager().getActiveLayer();
-    }
-
-    @Override
-    public void layerOrderChanged(LayerOrderChangeEvent e) {
-    }
-
-    @Override
-    public void layerAdded(LayerAddEvent e) {
-    }
-
-    @Override
-    public void layerRemoving(LayerRemoveEvent e) {
-        if (layer == e.getRemovedLayer())
-            layer = null;
-    }
-
-    private Layer layer;
 }