import com.vaadin.ui.Table.CellStyleGenerator; //导入依赖的package包/类
protected void initSelectionTable() {
  selectionTable = new Table();
  selectionTable.setSizeUndefined();
  selectionTable.setColumnHeaderMode(Table.COLUMN_HEADER_MODE_HIDDEN);
  selectionTable.setSelectable(true);
  selectionTable.setImmediate(true);
  selectionTable.setNullSelectionAllowed(false);
  selectionTable.setWidth(150, UNITS_PIXELS);
  selectionTable.setHeight(100, UNITS_PERCENTAGE);

  selectionTable.setCellStyleGenerator(new CellStyleGenerator() {
    private static final long serialVersionUID = 1L;
    public String getStyle(Object itemId, Object propertyId) {
      if("name".equals(propertyId)) {
        return ExplorerLayout.STYLE_RELATED_CONTENT_CREATE_LIST_LAST_COLUMN;
      }
      return null;
    }
  });

  selectionTable.addStyleName(ExplorerLayout.STYLE_RELATED_CONTENT_CREATE_LIST);

  selectionTable.addContainerProperty("type", Embedded.class, null);
  selectionTable.setColumnWidth("type", 22);
  selectionTable.addContainerProperty("name", String.class, null);

  // Listener to switch to the selected component
  selectionTable.addListener(new ValueChangeListener() {
    private static final long serialVersionUID = 1L;
    public void valueChange(ValueChangeEvent event) {
      String name = (String) event.getProperty().getValue();
      if (name != null) {
        currentSelection = name;
        currentComponent = components.get(name);
        selectedComponentLayout.removeComponent(selectedComponentLayout.getComponent(0, 0));
        if (currentComponent != null) {
          currentComponent.setSizeFull();
          selectedComponentLayout.addComponent(currentComponent, 0, 0);
          okButton.setEnabled(true);
        } else {
          okButton.setEnabled(false);
        }
      } 
    }
  });
  windowLayout.addComponent(selectionTable);
}