public WindowTimtheobomon() {

    setCaption("Tìm theo bộ môn "); // Constants.USER_CAPTION) ;

    HorizontalLayout mainLayout = new HorizontalLayout();
    mainLayout.setImmediate(false);
    mainLayout.setWidth(Constants.WIDTH_MAX, Sizeable.UNITS_PIXELS);
    mainLayout.setMargin(false);
    mainLayout.setSpacing(true);

    mainLayout.addComponent(new leftSide());
    rContent = new VerticalLayout();
    rContent.setWidth("100%");

    mainLayout.addComponent(rContent);
    mainLayout.setExpandRatio(rContent, 1.0f);

    VerticalLayout v = new VerticalLayout();
    v.setWidth("100%");
    v.setStyleName("bl-mainContent");
    v.addComponent(mainLayout);
    v.setComponentAlignment(mainLayout, Alignment.MIDDLE_CENTER);

    addComponent(new topLogin());
    addComponent(new topPanel());
    addComponent(new mainMenu());
    addComponent(v);
    addComponent(new bottom());

    // --------------------bl
    Label title = new Label("<center><h1>Tìm theo bộ môn<h1></center>", Label.CONTENT_XHTML);

    final BeanItemContainer<ResearchingBean> beans =
        new BeanItemContainer<ResearchingBean>(ResearchingBean.class);

    Table table = new Table("Tìm kiếm", beans);

    table.setWidth("100%");
    table.setPageLength(10);

    rContent.addComponent(title);
    rContent.addComponent(table);
  }
  public WindowManagerTeacher() {

    setCaption("quan ly bo mon "); // Constants.USER_CAPTION) ;

    mainLayout = new HorizontalLayout();
    mainLayout.setImmediate(false);
    mainLayout.setWidth(Constants.WIDTH_MAX, Sizeable.UNITS_PIXELS);
    mainLayout.setMargin(false);
    mainLayout.setSpacing(true);

    mainLayout.addComponent(new leftSide());

    rContentList = new VerticalLayout();
    rContentList.setWidth("100%");
    mainLayout.addComponent(rContentList);
    mainLayout.setExpandRatio(rContentList, 1.0f);

    rContentModify = new rightContentAddNewTeacher(1);
    rContentModify.setWidth("100%");

    VerticalLayout v = new VerticalLayout();
    v.setWidth("100%");
    v.setStyleName("bl-mainContent");
    v.addComponent(mainLayout);
    v.setComponentAlignment(mainLayout, Alignment.MIDDLE_CENTER);

    addComponent(new topLogin());
    addComponent(new topPanel());
    addComponent(new mainMenu());
    addComponent(v);
    addComponent(new bottom());

    // --------------------bl
    Label title = new Label("<center><h1>Danh sách giang vien<h1></center>", Label.CONTENT_XHTML);

    table = new Table();
    table.setWidth("100%");
    table.setPageLength(20);

    rContentList.addComponent(title);
    rContentList.addComponent(table);

    Connection conn = null;
    Statement stmt = null;

    try {
      JDBCConnectionPool pool =
          new SimpleJDBCConnectionPool(
              JDBC_DRIVER,
              DB_URL + QlgiangvienApplication.DB_DBNAME,
              QlgiangvienApplication.DB_USER,
              QlgiangvienApplication.DB_PASS);

      String mysql = "SELECT * from GiangVien";

      TableQuery query = new TableQuery("GiangVien", pool);
      query.setVersionColumn("OPTLOCK");

      SQLContainer container = new SQLContainer(query);
      container.setAutoCommit(true);
      //          container.re
      table.setContainerDataSource(container);

      //           FreeformQuery query = new FreeformQuery(mysql, pool, "MaGV") ;

      //           container = new SQLContainer(query);

      //           table.setContainerDataSource(container) ;

      table.addGeneratedColumn(
          "Chinh Sua",
          new Table.ColumnGenerator() {
            public Component generateCell(Table source, Object itemId, Object columnId) {
              final Item item = table.getItem(itemId);

              Button btnModify =
                  new Button(
                      "Chinh Sua",
                      new Button.ClickListener() {
                        @Override
                        public void buttonClick(ClickEvent event) {

                          //              				rContentList.setVisible(false);
                          //              				rContentModify.setVisible(true);
                          System.out.println(item.toString());
                          rContentModify.setUpdateData(
                              item.getItemProperty("MaGV").getValue().toString());
                          mainLayout.removeComponent(rContentList);
                          mainLayout.addComponent(rContentModify);
                          mainLayout.setExpandRatio(rContentModify, 1.0f);
                        }
                      });

              return btnModify;
            }
          });
      confirmDelete();
      table.addGeneratedColumn(
          "Xoa",
          new Table.ColumnGenerator() {
            public Component generateCell(Table source, Object itemId, Object columnId) {

              //            	   Item item = table.getItem(itemId);

              Button btnModify =
                  new Button(
                      "Xoa",
                      new Button.ClickListener() {
                        @Override
                        public void buttonClick(ClickEvent event) {

                          if (subwindow.getParent() == null) {

                            getWindow().addWindow(subwindow);
                          }
                        }
                      });

              return btnModify;
            }
          });

    } catch (Exception e) {
      System.out.println("in right COntent: " + e.toString());
    }
  } // end of container