如何将"子行"插入Wicket DataTable

Question

我有一个AjaxFallbackDefaultDataTable每个测试结果包含一行.测试结果可能附有注释,需要在测试结果下方突出显示,希望给出类似于以下内容的表:

| Test | Result | Appraisal |
|------|--------|-----------|
|  1   |  20.0  |   PASS    |
|  2   |  1.50  |   FAIL    |
| Note: This is an epic fail|
|  3   |  19.4  |   PASS    |
|  4   |  14.9  |   PASS    |

有没有办法使用Wicket DataTable构造实现此行插入(最好使用列跨越).当我深入了解源代码时,我可以找到Item渲染器,但没有任何东西可以处理.

目前我有以下内容:

// Create the sortable data provider.
SortableDataProvider<TestResult> provider = new SortableDataProvider<TestResult>() {
    //... hibernate pagination code ...
};

List<IColumn> columns = new ArrayList<IColumn>();
columns.add(new TextFilteredPropertyColumn(new Model<String>("Test"), "test", "test"));
columns.add(new TextFilteredPropertyColumn(new Model<String>("Result"), "result", "result"));
columns.add(new TextFilteredPropertyColumn(new Model<String>("Appraisal"), "appraisal", "appraisal"));

// Create a new AJAX table using the sortable, filtered data provider.
final AjaxFallbackDefaultDataTable dataTable = new AjaxFallbackDefaultDataTable("testResultTable", columns.toArray(new IColumn[0]), provider, 20);// 20 = number of rows per page

Answer 1

我不认为有一个干净的方法,你将不得不破解生成的HTML.

我将自定义行为附加到自动生成所需HTML的行,如下所示:

new AjaxFallbackDefaultDataTable<MyCustomObject>(
    id, columns, dataProvider, rowsPerPage){

    @Override
    protected Item<MyCustomObject> newRowItem(String id,
        int index,
        final IModel<MyCustomObject> model){
        Item<MyCustomObject> item = super.newRowItem(id, index, model);
        item.add(new AbstractBehavior(){

            private static final long serialVersionUID = 1L;

            /**
             * {@inheritDoc}
             */
            @Override
            public void onRendered(Component component){
                if(model.getObject().isEpicFail()){
                    component.getResponse().write(
                    "<tr><td colspan=\"3\">This is an epic fail</td></tr>");
                }
            }

        });
        return item;
    }

    private static final long serialVersionUID = 1L;

}