Cutted widgetset

Hi!
I want to make small widgetset including UI, VerticalLayout, Label, Button only. How to do it?
Thank you in advance...
 

I solved this:
1. Configure WidgetSet.gwt.xml to use our loader class package.WSF instead of Vaadin ConnectorBundleLoader:
    <generate-with class="package.WSF">
        <when-type-assignable class="com.vaadin.client.metadata.ConnectorBundleLoader" />
    </generate-with>
2. In package.WSF class override protected Collection<JClassType> getConnectorsForWidgetset(...) method to return our necessary connectors:

@Override
    protected Collection<JClassType> getConnectorsForWidgetset(TreeLogger logger, TypeOracle typeOracle) throws UnableToCompleteException {
        // Proof code
        List<String> whiteList = new ArrayList<String>();
        whiteList.add("com.vaadin.client.ui.ui.UIConnector");
        whiteList.add("com.vaadin.client.ui.orderedlayout.VerticalLayoutConnector");
        whiteList.add("com.vaadin.client.ui.label.LabelConnector");
        whiteList.add("com.vaadin.client.ui.button.ButtonConnector");
        whiteList.add("ru.rlisystems.web.platform.addons.dynamichtml.client.DynamicHTMLConnector");
        
        Collection<JClassType> list = new ArrayList<JClassType>();
        System.out.println("getConnectorsForWidgetset() called: typeOracle=" + String.valueOf(typeOracle.getJavaLangObject() ));
        for (JClassType ct : super.getConnectorsForWidgetset(logger, typeOracle)) {
            String log = ct.getParameterizedQualifiedSourceName();
            if (whiteList.contains(ct.getParameterizedQualifiedSourceName())) {
                list.add(ct);
                log += " [OK]";
            } else
                log += " [EXCLUDE]";
            System.out.println(log);
        }    
        return list;
    }

So, our widgetset contains widgets with connector names, specified in whiteList collectiob, and widgetset .js file decreased from 12 to 6 Mbytes :)