public void actionPerformed(ActionEvent e) {
      int selIndexBefore = getSelectedIndex();
      myDefaultAction.actionPerformed(e);
      int selIndexCurrent = getSelectedIndex();
      if (selIndexBefore != selIndexCurrent) {
        return;
      }
      if (myFocusNext && selIndexCurrent == 0) {
        return;
      }

      KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
      Container container = kfm.getCurrentFocusCycleRoot();
      FocusTraversalPolicy policy = container.getFocusTraversalPolicy();
      if (policy == null) {
        policy = kfm.getDefaultFocusTraversalPolicy();
      }
      Component next =
          myFocusNext
              ? policy.getComponentAfter(container, PaletteItemsComponent.this)
              : policy.getComponentBefore(container, PaletteItemsComponent.this);
      if (next instanceof PaletteGroupComponent) {
        clearSelection();
        next.requestFocus();
        ((PaletteGroupComponent) next).scrollRectToVisible(next.getBounds());
      }
    }
 public void actionPerformed(ActionEvent e) {
   KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
   Container container = kfm.getCurrentFocusCycleRoot();
   FocusTraversalPolicy policy = container.getFocusTraversalPolicy();
   if (null == policy) policy = kfm.getDefaultFocusTraversalPolicy();
   Component next =
       moveDown
           ? policy.getComponentAfter(container, PaletteGroupHeader.this)
           : policy.getComponentBefore(container, PaletteGroupHeader.this);
   if (null != next && next instanceof PaletteComponentList) {
     final PaletteComponentList list = (PaletteComponentList) next;
     if (list.getModel().getSize() != 0) {
       list.takeFocusFrom(PaletteGroupHeader.this, list == myComponentList ? 0 : -1);
       return;
     } else {
       next =
           moveDown
               ? policy.getComponentAfter(container, next)
               : policy.getComponentBefore(container, next);
     }
   }
   if (null != next && next instanceof PaletteGroupHeader) {
     next.requestFocus();
   }
 }