Accordions

If you know TabSheet, you already know Accordion. Really, they work exactly the same. To demonstrate this fact, let's take the code in the previous TabSheet example and change the corresponding identifiers to use Accordion instead of TabSheet.

Accordion accordion = new Accordion();
accordion.addTab(new Label("Label 1"), "Tabl 1");
accordion.addTab(new Label("Label 2")).setCaption("Tab 2");
Tab tab = accordion.addTab(new Label("Label 3"));
tab.setCaption("Tab 3");
tab.setClosable(true);

accordion
    .addSelectedTabChangeListener(new SelectedTabChangeListener() {
      public void selectedTabChange(
          SelectedTabChangeEvent event) {
        Notification.show("You are watching "
            + event.getTabSheet().getSelectedTab());
      }
    });

Everything works as expected. You can add tabs using the same techniques described before and you can register the same SelectedTabChangeListener. Here is a screenshot of the just developed accordion:

Have a go hero – find the disobedient...