forms - GWT DataGrid 选择处理程序

Question

我有一个 DataGrid，我想在单击它时获取选定的行：我想获取它的内容和它的索引。I have some sort of a form under the DataGrid, and when one row is selected, the form will be filled with the data in the selected row above! 然后，当我单击一个按钮时，应显示一个对话框，其中包含所选行中的数据！

我已经搜索过，但没有关于如何做到这一点的明确解释。谢谢

Answer 1

在Gwt DataGrid 的 API 中，有一个关于如何使用 GWT DataGrid 和selection model.

在那个例子中：

// Add a selection model to handle user selection. 


final SingleSelectionModel<Contact> selectionModel =
                                           new SingleSelectionModel<Contact();
table.setSelectionModel(selectionModel); 
selectionModel. addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 public void onSelectionChange( SelectionChangeEvent event) { 
 Contact selected = selectionModel. getSelectedObject();
 if (selected != null) {
 Window.alert("You selected: " + selected.name); }
 } });

Answer 2

DataGrid table = new DataGrid();

final SingleSelectionModel<Contact> selectionModel =
                                           new SingleSelectionModel<Contact>();
table.setSelectionModel(selectionModel); 

Button clickBtn = new Button("Click Button");
clickBtn.addClickHandler(new ClickHandler(){
Contact selectedContact = ((SingleSelectionModel)table.getSelectionModel()).getSelectedRecord();
setDataInForm(selectedContact);
});