public ServerDescBasic() {
    setHeight("100%");
    addStyleName(Reindeer.PANEL_LIGHT);

    VerticalLayout panel = (VerticalLayout) getContent();
    panel.setWidth("100%");
    panel.setHeight("100%");
    panel.setMargin(true);
    panel.setSpacing(false);
    panel.addStyleName("server-desc-basic");

    HorizontalLayout hlPanels = new HorizontalLayout();
    hlPanels.setWidth("100%");
    hlPanels.setHeight("100%");
    hlPanels.setMargin(true);
    hlPanels.setSpacing(true);
    hlPanels.addStyleName("server-desc-basic");
    //        setContent(hlPanels);

    left.setWidth("100%");
    right.setHeight("100%");
    right.setWidth("100%");

    // 表同士の間隔をあける
    Label padding = new Label(" ");
    padding.setWidth("7px");
    padding.setHeight("99%");
    padding.addStyleName("desc-padding");

    Label padding2 = new Label("");
    padding2.setWidth("1px");

    hlPanels.addComponent(left);
    hlPanels.addComponent(padding);
    hlPanels.addComponent(padding2);
    hlPanels.addComponent(right);
    hlPanels.setExpandRatio(left, 40);
    hlPanels.setExpandRatio(right, 60);

    panel.addComponent(hlPanels);
    panel.setExpandRatio(hlPanels, 1.0f);
  }
 public void initializeData() {
   right.getContainerDataSource().removeAllItems();
   left.setItem(null);
 }