如何向 GWT ButtonCell 添加单击处理程序？

Question

我创建了一个 ButtonCell< /a> 和 列：

ButtonCell previewButton = new ButtonCell();
Column<Auction,String> preview = new Column<Auction,String>(previewButton) {
  public String getValue(Auction object) {
    return "Preview";
  }
};

现在如何添加点击处理程序（例如 ClickHandler) 用于此 ButtonCell？

Answer 1

Cell Sampler 示例包含可点击 ButtonCell 的使用。通过设置 FieldUpdater：

preview.setFieldUpdater(new FieldUpdater<Auction, String>() {
  @Override
  public void update(int index, Auction object, String value) {
    // The user clicked on the button for the passed auction.
  }
});

Answer 2

 //Prevent mouse events  for table cell
 CellPreviewEvent.Handler<Auction > manager = DefaultSelectionEventManager.createBlacklistManager(4);//column number
 cellTable.setSelectionModel(selectionModel, manager);

 new Column<Auction , String>(new ButtonCell()){

    @Override
    public String getValue(Auction object) {
        return "Preview";
    }

    @Override
    public void onBrowserEvent(Cell.Context context, Element elem, Auction object, NativeEvent event) {
        event.preventDefault();

       //TODO implement event handling 
    }
}