public class VdlLogger extends ViewDeclarationLanguageWrapper {
    private static final Logger logger_= Logger.getLogger(VdlLogger.class.getName());
    private final ViewDeclarationLanguage wrapped;

    public VdlLogger(ViewDeclarationLanguage wrapped) {
        this.wrapped = wrapped;;
    }

    @Override
    public UIViewRoot createView(FacesContext context, String viewId) {
        long start = System.nanoTime();
        UIViewRoot view = super.createView(context, viewId);
        long end = System.nanoTime();
        logger_.severe(String.format("PerformanceCounter-create %s: %.6f ms", viewId, (end - start) / 1e6));
        return view;
    }

    @Override
    public void buildView(FacesContext context, UIViewRoot view) throws FacesException, IOException {
        long start = System.nanoTime();
        super.buildView(context, view);
        long end = System.nanoTime();
        logger_.severe(String.format("PerformanceCounter-build %s: %.6f ms", view.getViewId(), (end - start) / 1e6));
    }

    @Override
    public void renderView(FacesContext context, UIViewRoot view) throws FacesException, IOException {
        long start = System.nanoTime();
        super.renderView(context, view);
        long end = System.nanoTime();
        logger_.severe(String.format("PerformanceCounter-render %s: %.6f ms", view.getViewId(), (end - start) / 1e6));
    }

    @Override
    public UIComponent createComponent(FacesContext context, String taglibURI, String tagName, Map<String, Object> attributes) {
        long start = System.nanoTime();
        UIComponent component = super.createComponent(context, taglibURI, tagName, attributes);
        long end = System.nanoTime();
        logger_.severe(String.format("PerformanceCounter-creatc $s: %.6f ms", taglibURI, (end - start) / 1e6));
        return component;
    }

    @Override
    public  ViewDeclarationLanguage getWrapped() { return wrapped; }
}