GWT CheckboxCell阻止在CellTable中的选择 [英] GWT CheckboxCell hinders selection in CellTable

问题描述

我发现如果您有一个GWT CellTable 并添加一个包含 CheckboxCell 的列， a SingleSelectionModel 不再工作。此单元格类型阻碍行选择。
下面的代码示例演示了在2.5.0.rc1中的此行为。

I discovered that if you have a GWT CellTable and add a column that contains a CheckboxCell, the selection via a SingleSelectionModel does not work anymore. This cell type does hinder the row selection. Following a code sample that demonstrates this behaviour in 2.5.0.rc1.

final CellTable<LicenseDto> licenseTable = new CellTable<LicenseDto>();
final SingleSelectionModel<LicenseDto> selectionModel = new SingleSelectionModel<LicenseDto>();
licenseTable.setSelectionModel(selectionModel);


//--- If I add this column, the selection does work.
Column<LicenseDto, String> workingColumn = new Column<LicenseDto, String>(new TextCell()) {

    @Override
    public String getValue(LicenseDto object) {
        return "Works";
    }
};
workingColumn.setFieldUpdater(new FieldUpdater<LicenseDto, String>() {

    @Override
    public void update(int index, LicenseDto object, String value) {
        ;
    }
});
licenseTable.addColumn(workingColumn);


//--- If I add this column, the selection does NOT work anymore.
Column<LicenseDto, Boolean> notWorkingColumn = new Column<LicenseDto, Boolean>(new CheckboxCell(true, true)) {

    @Override
    public Boolean getValue(LicenseDto object) {
        return object.getEnabled();
    }
};
notWorkingColumn.setFieldUpdater(new FieldUpdater<LicenseDto, Boolean>() {

    @Override
    public void update(int index, LicenseDto object, Boolean value) {
        presenter.enableLicense(object, value);
    }
});
licenseTable.addColumn(notWorkingColumn);

initWidget(licenseTable);

您可以组合多个单元格并将它们添加到表中（例如 LinkActionCell 等）。只要没有 CheckboxCell ，用 SingleSelectionModel 的蓝色选择就像一个魅力。有没有人看到我在这个 CheckboxCell 上做错了或有错误？

You can combine multiple cells and add them to the table (e.g. LinkActionCell etc). As long as there is no CheckboxCell, the blue selection with the SingleSelectionModel works like a charm. Does anyone see what I do wrong with this CheckboxCell or is there a bug?

推荐答案

谢谢Thomas！问题是，我设置 handlesSelection = true 甚至认为我不处理任何东西。将其设置为false可以解决问题。
顺便说一句，我添加一个 fieldUpdater 到列，以处理复选框的勾选或取消勾选：

Thank you Thomas! The problem was that I set handlesSelection = true even thought I don't handle anything. Setting it to false solves the problem. By the way, I add a fieldUpdater to the column to handle a tick or untick of the checkbox:

Column<LicenceDto, Boolean> enableLicenseColumn = new Column<LicenceDto, Boolean>(new CheckboxCell(false, false)) {

    @Override
    public Boolean getValue(LicenceDto object) {
        return object.getEnabled();
    }
};
enableLicenseColumn.setFieldUpdater(new FieldUpdater<LicenceDto, Boolean>() {

    @Override
    public void update(int index, LicenceDto object, Boolean value) {
        presenter.enableLicense(object, value);
    }
});

问题得到解答。

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