[udig-devel] How to use MapViewer to display WMS layers ?

[Olivier THIERRY <olivier.thierry@xxxxxxxxx>]

Hi,

I am a newvbie with uDig. I need to display a map with WMS layers in
my own Eclipse RCP application.
I try to use MapViewer but I can't make it work. The viewport is
blank, no GetMap requests are sent to my WMS server (but the
GetCapabilities request is sent OK)

I wrote the following code :

        private MapViewer viewer;
	private Map map;

	public void createPartControl(Composite parent) {
		try {
			FillLayout fillLayout = new FillLayout();
			fillLayout.type = SWT.VERTICAL;
			parent.setLayout(fillLayout);

			CatalogPlugin cp = CatalogPlugin.getDefault();
			IServiceFactory sf = cp.getServiceFactory();
			List<IService> services = sf.createService(new
URL("http://10.9.1.30:8080/maquette-web/proxy/wms";));
			List<IGeoResource> resources = new ArrayList<IGeoResource>();
			for ( IService service : services) {
				for (IResolve resolve : service.resources(new NullProgressMonitor())) {
					IGeoResource resource = (IGeoResource) resolve;
                                        resources.add(resource);
				}
			}

	                map = (Map) ProjectFactory.eINSTANCE.createMap();
	                LayerFactory layerFactory = map.getLayerFactory();
	                List<Layer> toAdd=new ArrayList<Layer>(resources.size());
	                for( IGeoResource resource : resources ) {
	                Layer layer = layerFactory.createLayer(resource);
	                     toAdd.add(layer);
	                }
	                map.getLayersInternal().addAll(toAdd);
			
			viewer = new MapViewer(parent, SWT.MULTI | SWT.NO_BACKGROUND);
			viewer.init(this);
			viewer.setMap(map);
                } catch (Exception e) {
                        e.printStacktrace();
                }
            }

The layers are well set (map.getLayersInternal() is OK) but no tile is
displayed. No message, I have no idea what happens.
I surely made something wrong, but what ?

Thanks for any help

Olivier