private List<ILayer> getLayers() {
List<ILayer> layers = new ArrayList<ILayer>();
ICompositeRenderContext context1 = getContext();
IRenderContext[] contexts =
context1.getContexts().toArray(new IRenderContext[context1.getContexts().size()]);
if (contexts.length == 0)
throw new RuntimeException(Messages.BasicWMSRenderer2_no_layers_to_render);
for (IRenderContext renderContext : contexts) {
if (renderContext.getLayer().isVisible()) {
layers.add(renderContext.getLayer());
}
}
if (layers.isEmpty()) {
WMSPlugin.log("WARNING: WMS Renderer contains no layers."); // $NON-NLS-1$
}
return layers;
}
public boolean canAddLayer(ILayer layer) {
if (!layer.hasResource(Layer.class)) return false;
try {
if (!layer
.findGeoResource(Layer.class)
.parent(ProgressManager.instance().get())
.equals(getRenderContext().getGeoResource().parent(ProgressManager.instance().get())))
return false;
} catch (IOException e2) {
return false;
}
double opacity = Double.NaN;
ICompositeRenderContext context1 = (ICompositeRenderContext) context;
IRenderContext[] contexts =
context1.getContexts().toArray(new IRenderContext[context1.getContexts().size()]);
Arrays.sort(contexts);
List<Layer> owsLayers = new ArrayList<Layer>();
IService currentService;
try {
owsLayers.add(layer.getResource(Layer.class, new NullProgressMonitor()));
currentService = layer.getResource(IService.class, null);
} catch (IOException e1) {
WMSPlugin.log("", e1); // $NON-NLS-1$
return false;
}
for (IRenderContext renderContext : contexts) {
ILayer previousLayer = renderContext.getLayer();
try {
owsLayers.add(previousLayer.getResource(Layer.class, new NullProgressMonitor()));
IService previousService = previousLayer.getResource(IService.class, null);
if (currentService != previousService) {
return false;
}
} catch (IOException e) {
WMSPlugin.log("Error while retrieving service.", e); // $NON-NLS-1$
return false;
}
if (BasicWMSRenderer2.findRequestCRS(owsLayers, context.getCRS(), context.getMap()) == null)
return false;
Style style = (Style) previousLayer.getStyleBlackboard().get(SLDContent.ID);
if (style != null) {
opacity = SLDs.rasterOpacity(SLDs.rasterSymbolizer(style));
}
}
Style style = (Style) layer.getStyleBlackboard().get(SLDContent.ID);
if (style == null && Double.isNaN(opacity)) {
return true;
}
double result = SLDs.rasterOpacity(SLDs.rasterSymbolizer(style));
if (result == opacity) {
return true;
}
return false;
}