public class SVGExportHandler {

	public SVGExportHandler() {
	}

	private Bounds createImageFromModel(SimpleMindMap mindMap, SVGGraphics2D svgGenerator) {
		SimpleMindMapModule module = new SimpleMindMapModule();
		Injector injector = Guice.createInjector(module);
		IDomain domain = injector.getInstance(IDomain.class);
		Parent canvas = domain.getAdapter(AdapterKey.get(IViewer.class, IDomain.CONTENT_VIEWER_ROLE)).getCanvas();
		new Scene(canvas);
		domain.activate();

		MindMapPartsFactory partsFactory = injector.getInstance(MindMapPartsFactory.class);

		IContentPart<? extends Node> rootPart = partsFactory.createContentPart(mindMap, null);
		rootPart.setContent(mindMap);
		loadDescenantParts(rootPart, partsFactory);

		Bounds size = rootPart.getVisual().getLayoutBounds();

		return size;
	}

	public void execute() {
		String homeDir = System.getProperty("user.home");
		final File svgFile = new File(homeDir, "export.svg");

		DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();

		Document document = domImpl.createDocument(null, "svg", null);

		try {
			OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(svgFile), "UTF-8");
			SVGGraphics2D svgGenerator = new SVGGraphics2D(document);

			// I want to show how to do this creation directly from a new model separate
			// from anything currently displayed visually.
			SimpleMindMapExampleFactory fac = new SimpleMindMapExampleFactory();
			SimpleMindMap mindMap = fac.createComplexExample();
			Bounds size = createImageFromModel(mindMap, svgGenerator);

			Element root = svgGenerator.getRoot();

			root.setAttributeNS(null, "width", Double.toString(size.getWidth()));
			root.setAttributeNS(null, "height", Double.toString(size.getHeight()));

			svgGenerator.stream(root, out);
			out.close();

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// There has to be a better GEF5 way of doing this...
	private void loadDescenantParts(IContentPart<? extends Node> part, MindMapPartsFactory partsFactory) {
		for (Object child : part.getContentChildrenUnmodifiable()) {
			IContentPart<? extends Node> childPart = partsFactory.createContentPart(child, null);
			childPart.setContent(child);
			part.addChild(childPart);
			loadDescenantParts(childPart, partsFactory);
		}
	}

}