java 如何从单元格表中删除一行
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How to remove a row from the Cell Table
提问by angry
At first I used the Grid. After creating a new version of the GWT, I want to replace the Grid on the CellTable.
起初我使用网格。创建新版本的 GWT 后，我想替换 CellTable 上的 Grid。
回答by z00bs
Check out the javadocfor details. My example is like the one you'll find there (just a little extended):
有关详细信息，请查看javadoc。我的例子就像你会在那里找到的那个（只是有点扩展）：
public void onModuleLoad() {
final CellTable<Row> table = new CellTable<Row>();
TextColumn<Row> firstColumn = new TextColumn<Starter.Row>() {
@Override
public String getValue(Row object) {
return object.firstColumn;
}
};
table.addColumn(firstColumn, "header one");
TextColumn<Row> secondColumn = new TextColumn<Starter.Row>() {
@Override
public String getValue(Row object) {
return object.secondColumn;
}
};
table.addColumn(secondColumn, "header two");
TextColumn<Row> thirdColumn = new TextColumn<Starter.Row>() {
@Override
public String getValue(Row object) {
return object.thirdColumn;
}
};
table.addColumn(thirdColumn, "header three");
table.setRowCount(getList().size());
final ListDataProvider<Row> dataProvider = new ListDataProvider<Starter.Row>(getList());
dataProvider.addDataDisplay(table);
final SingleSelectionModel<Row> selectionModel = new SingleSelectionModel<Starter.Row>();
table.setSelectionModel(selectionModel);
Button btn = new Button("delete entry");
btn.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
Row selected = selectionModel.getSelectedObject();
if (selected != null) {
dataProvider.getList().remove(selected);
}
}
});
RootPanel.get().add(table);
RootPanel.get().add(btn);
}
private class Row {
private String firstColumn;
private String secondColumn;
private String thirdColumn;
public Row(String firstColumn, String secondColumn, String thirdColumn) {
this.firstColumn = firstColumn;
this.secondColumn = secondColumn;
this.thirdColumn = thirdColumn;
}
}
private LinkedList<Row> getList() {
LinkedList<Row> list = new LinkedList<Row>();
list.add(new Row("first", "entry", "foo"));
list.add(new Row("second", "entry", "foo"));
list.add(new Row("third", "entry", "foo"));
list.add(new Row("fourth", "entry", "foo"));
return list;
}
回答by Denys
Or you can just run the cycle like that
或者你可以像这样运行循环
@UiHandler("combo")
public void onChange(ChangeEvent e) {
textBoxes.clear();
searchFields.clear();
while(resultsTable.getColumnCount()!=0) {
resultsTable.removeColumn(0);
}
resultsTable.redraw();
Where resultsTable is a CellTable
其中 resultsTable 是一个 CellTable
回答by Ilia Akhmadullin
CellTable as part of new DataPresentationWidgetsused just to display data. So you should delete according member from list of data which CellTable using to display.
CellTable 作为新DataPresentationWidgets 的一部分，仅用于显示数据。所以你应该从 CellTable 用来显示的数据列表中删除相应的成员。
