How to use

setStyleName

method

in

com.google.gwt.user.client.ui.TabPanel

/**
 * Creates an empty tab panel.
 */
public TabPanel() {
 VerticalPanel panel = new VerticalPanel();
 panel.add(tabBar);
 panel.add(deck);
 panel.setCellHeight(deck, "100%");
 tabBar.setWidth("100%");
 tabBar.addTabListener(this);
 initWidget(panel);
 setStyleName("gwt-TabPanel");
 deck.setStyleName("gwt-TabPanelBottom");
 // Add a11y role "tabpanel"
 Roles.getTabpanelRole().set(deck.getElement());
}

private void createDetailsSection(VerticalPanel vpanel) {
  // adds the title for the details section
  vpanel.add(new ContentGroupLabel("Details"));
  // adds the tabs for the details section
  bottomTabs = new TabPanel();
  bottomTabs.setStyleName("default-tabpanel");
  bottomTabs.addStyleName("master_detail-detail");
  wizard = doCreateWizard();
  doCreateAttributesTab(bottomTabs);
  addDetailsSectionTabs(bottomTabs);
  vpanel.add(bottomTabs);
  bottomTabs.selectTab(0);
}

/**
 * Creates an empty tab panel.
 */
public TabPanel() {
 VerticalPanel panel = new VerticalPanel();
 panel.add(tabBar);
 panel.add(deck);
 panel.setCellHeight(deck, "100%");
 tabBar.setWidth("100%");
 tabBar.addTabListener(this);
 initWidget(panel);
 setStyleName("gwt-TabPanel");
 deck.setStyleName("gwt-TabPanelBottom");
 // Add a11y role "tabpanel"
 Roles.getTabpanelRole().set(deck.getElement());
}

/**
 * Creates an empty tab panel.
 */
public TabPanel() {
 VerticalPanel panel = new VerticalPanel();
 panel.add(tabBar);
 panel.add(deck);
 panel.setCellHeight(deck, "100%");
 tabBar.setWidth("100%");
 tabBar.addTabListener(this);
 initWidget(panel);
 setStyleName("gwt-TabPanel");
 deck.setStyleName("gwt-TabPanelBottom");
 // Add a11y role "tabpanel"
 Roles.getTabpanelRole().set(deck.getElement());
}

@Override
public Widget asWidget() {
  this.tabPanel = new TabPanel();
  tabPanel.setStyleName("default-tabpanel");
  tabPanel.addStyleName("master_detail-detail");
  VerticalPanel layout = new VerticalPanel();
  final TextItem aliasItem = new TextItem("name", uiConstants.common_label_federationName());
  form.setFields(aliasItem);
  form.setEnabled(false);
  layout.add(new FormLayout().setTools(null).setForm(form).build());
  tabPanel.add(layout, "Attributes");
  
  this.samlConfigurationDetails = new SAMLConfigurationDetails(this.presenter);
  tabPanel.add(this.samlConfigurationDetails.asWidget(), "SAML Configuration");
  tabPanel.selectTab(0);
  return tabPanel;
}

/**
 * @return this editor as a Widget.
 */
public Widget asWidget() {
  VerticalPanel panel = new VerticalPanel();
  panel.add(new ContentGroupLabel(Singleton.MESSAGES.label_serviceDetails()));
  panel.add(new ContentDescription(Singleton.MESSAGES.description_serviceDetails()));
  panel.add(createImplementationDetailsPanel());
  TabPanel tabs = new TabPanel();
  tabs.setStyleName("default-tabpanel"); //$NON-NLS-1$
  tabs.getElement().setAttribute("style", "margin-top:15px;"); //$NON-NLS-1$ //$NON-NLS-2$
  tabs.add(createGatewayDetailsPanel(), Singleton.MESSAGES.label_gateways());
  tabs.add(createThrottlingDetailsPanel(), Singleton.MESSAGES.label_throttling());
  tabs.addBeforeSelectionHandler(new BeforeSelectionHandler<Integer>() {
    @Override
    public void onBeforeSelection(BeforeSelectionEvent<Integer> event) {
      _toolstrip.doCancel();
    }
  });
  panel.add(tabs);
  tabs.selectTab(0);
  return panel;
}