@Override
  protected boolean isEnabled() {
    final LayoutTreeSelection selection = myArtifactEditor.getLayoutTreeComponent().getSelection();
    if (selection.getElements().isEmpty() || myArtifactEditor.getLayoutTreeComponent().isEditing()) {
      return false;
    }
    for (PackagingElementNode<?> node : selection.getNodes()) {
      if (node.getParentNode() == null) {
        return false;
      }
    }
    return true;
  }
@Override
  protected boolean isEnabled()