private JComponent createTreeToolbar() {
    final DefaultActionGroup group = new DefaultActionGroup();
    final Runnable update =
        new Runnable() {
          public void run() {
            rebuild(true);
          }
        };
    if (ProjectViewDirectoryHelper.getInstance(myProject).supportsFlattenPackages()) {
      group.add(new FlattenPackagesAction(update));
    }
    final PatternDialectProvider[] dialectProviders =
        Extensions.getExtensions(PatternDialectProvider.EP_NAME);
    for (PatternDialectProvider provider : dialectProviders) {
      for (AnAction action : provider.createActions(myProject, update)) {
        group.add(action);
      }
    }
    group.add(new ShowFilesAction(update));
    final Module[] modules = ModuleManager.getInstance(myProject).getModules();
    if (modules.length > 1) {
      group.add(new ShowModulesAction(update));
      group.add(new ShowModuleGroupsAction(update));
    }
    group.add(new FilterLegalsAction(update));

    if (dialectProviders.length > 1) {
      group.add(new ChooseScopeTypeAction(update));
    }

    ActionToolbar toolbar =
        ActionManager.getInstance().createActionToolbar(ActionPlaces.UNKNOWN, group, true);
    return toolbar.getComponent();
  }
 @Override
 public String getComment() {
   if (myVDirectory != null && myVDirectory.isValid() && !myProject.isDisposed()) {
     final PsiDirectory directory = getPsiDirectory();
     if (directory != null) {
       return ProjectViewDirectoryHelper.getInstance(myProject).getLocationString(directory);
     }
   }
   return super.getComment();
 }