public NestWorldMapPane(NestWorldMapPaneDataModel dataModel) { this.dataModel = dataModel; try { layerCanvas = new LayerCanvas(); layerCanvas.getModel().getViewport().setModelYAxisDown(false); installLayerCanvasNavigation(layerCanvas, dataModel); layerCanvas.addOverlay(new BoundaryOverlay()); final Layer rootLayer = layerCanvas.getLayer(); final Dimension dimension = new Dimension(400, 150); final Viewport viewport = layerCanvas.getViewport(); viewport.setViewBounds(new Rectangle(dimension)); setPreferredSize(dimension); setSize(dimension); setLayout(new BorderLayout()); add(layerCanvas, BorderLayout.CENTER); dataModel.addModelChangeListener(new ModelChangeListener()); worldMapLayer = dataModel.getWorldMapLayer(new WorldMapLayerContext(rootLayer)); layerCanvas.getLayer().getChildren().add(worldMapLayer); layerCanvas.getViewport().zoom(worldMapLayer.getModelBounds()); setNavControlVisible(true); } catch (Exception e) { SnapApp.getDefault().handleError("Error in worldmap initialization", e); } }