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;
 }

并使用行编辑器进行网格

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");

绑定到字段的活页夹代码

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);

和列顺序有关的问题，当我按行并激活编辑器时，我获得了概率列位置上的损坏字段编辑器，依此类推。

如何解决此问题？

Answer 1

在这里查看您的代码

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

您将获得“损坏”列以引用probabilityColumn，并使用具有getter和setter的概率的绑定对其进行设置，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);

对于其他专栏，您反之亦然。因此它按编码方式工作。如您所见，Vaadin Grid和Binder中的API允许这种不对称性，因为可以分别定义getter和setter，这在您的情况下是编程错误，但在其他情况下，您可以利用此功能。