vaadin网格行编辑器更改列顺序

Question

我有一个简单的实体

 public class Vulnerability{
  private String name;
  private int probability;
  private int damage;
 }

和使用行编辑器的网格

Grid<Vulnerability> vulnerabilityGrid = new Grid<Vulnerability>(Vulnerability.class);
vulnerabilityGrid.setColumns("name", "probability", "damage");
Grid.Column nameColumn = vulnerabilityGrid.getColumn("name");
Grid.Column probabilityColumn = vulnerabilityGrid.getColumn("damage");
Grid.Column damageColumn = vulnerabilityGrid.getColumn("probability");

绑定字段的绑定器代码

Binder<Vulnerability> binderVulnerability = new Binder<Vulnerability>();
TextField nameTextFieldGrid = new TextField(), damageTextFieldGrid = new TextField(), probabilityTextFieldGrid = new TextField();
Binder.Binding<Vulnerability, Integer> probabilityBind = binderVulnerability.forField(probabilityTextFieldGrid).withNullRepresentation("").withConverter(new StringToIntegerConverter(Integer.valueOf(0), "integers only")).bind(Vulnerability::getProbability, Vulnerability::setProbability);
Binder.Binding<Vulnerability, Integer> damageBind = binderVulnerability.forField(damageTextFieldGrid).withNullRepresentation("") .withConverter(new StringToIntegerConverter(Integer.valueOf(0), "integers only")).bind(Vulnerability::getDamage, Vulnerability::setDamage);

nameColumn.setEditorBinding(nameBind);
probabilityColumn.setEditorBinding(probabilityBind);
damageColumn.setEditorBinding(damageBind);

列顺序的问题，当我按下行，编辑器被激活时，我得到了probabilityColumn位置上的损坏字段的编辑器，依此类推。

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我如何解决这个问题？

Answer 1

在这里查看你的代码

Grid.Column probabilityColumn = vulnerabilityGrid.getColumn("damage");
Grid.Column damageColumn = vulnerabilityGrid.getColumn("probability");

您将获取"damage“列来引用probabilityColumn，并使用具有getter和setter的绑定来设置它，如下所示。

Binder.Binding<Vulnerability, Integer> probabilityBind = binderVulnerability.forField(probabilityTextFieldGrid).withNullRepresentation("").withConverter(new StringToIntegerConverter(Integer.valueOf(0), "integers only")).bind(Vulnerability::getProbability, Vulnerability::setProbability);

probabilityColumn.setEditorBinding(probabilityBind);

对于其他列，你可以做vica，反之亦然。所以它是按照编码方式工作的。如您所见，Vaadin Grid和Binder中的API允许这种不对称，因为可以分别定义getter和setter，在您的情况下这是一个编程错误，但在其他情况下，您可以利用此功能。