code: public List<Widget> getAll() {
  
          List<Widget> all = new ArrayList<Widget>();
          Iterator<Widget> it = m_buttonPanelLeft.iterator();
          while (it.hasNext()) {
              all.add(it.next());
          }
          it = m_buttonPanelRight.iterator();
          while (it.hasNext()) {
              all.add(it.next());
          }
          return all;
      }
docs: Returns all {@link com.google.gwt.user.client.ui.Widget} added to the tool-bar in order of addition first left than right.<p>
  
  @return all added Widgets