reactjs - 获取 Fluent UI DetailsList 中的选定项目

Question

我正在使用 Fluent UI DetailsList .在示例中，组件是作为类组件实现的，但我使用的是功能组件。

我在获取所选项目时遇到困难，我假设并认为我的实现不正确。问题是我没有得到任何选定的项目。

export const JobDetails = () =>  {
    const { actions, dispatch, isLoaded, currentTabJobs, activeTabItemKey } = useJobDetailsState()

    let history = useHistory();

    useEffect(() => {
        if (actions && dispatch) {
            actions.getJobListDetails()
        }
    }, [actions, dispatch])

    const getSelectionDetails = (): string =>  {
        let selectionCount = selection.getSelectedCount();

        switch (selectionCount) {
            case 0:
                return 'No items selected';
            case 1:
                return '1 item selected: ' + (selection.getSelection()[0] as any).name;
            default:
                return `${selectionCount} items selected`;
        }
    }

    const [selectionDetails, setSelectionDetails] = useState({})
    const [selection, setSelection] = useState(new Selection({
        onSelectionChanged: () => setSelectionDetails(getSelectionDetails())
    }))

    useEffect(() => {
        setSelection(new Selection({
            onSelectionChanged: () => setSelectionDetails(getSelectionDetails())
        }))
    },[selectionDetails])

    return (
        <div>
            <MarqueeSelection selection={selection}>
                <DetailsList
                    items={currentTabJobs}
                    groups={getGroups()}
                    columns={_columns}
                    selection={selection}
                    selectionPreservedOnEmptyClick={true}
                    groupProps={{
                        onRenderHeader: props => {
                            return (
                                <GroupHeader 
                                    {...props} 
                                    selectedItems={selection}
                                />
                            )
                        },
                        showEmptyGroups: true
                    }}
                />
            </MarqueeSelection>
        </div>
    )
}

export default JobDetails;

Answer 1

我可能有一个更简单的答案，此示例适用于激活了 'SelectionMode.single' 的列表，但我认为获取所选项目的原则保持不变

const [selectedItem, setSelectedItem] = useState<Object | undefined>(undefined)
const selection = new Selection({
    onSelectionChanged: () => {
        setSelectedItem(selection.getSelection()[0])
    }
})

useEffect(() => {
    // Do something with the selected item
    console.log(selectedItem)
}, [selectedItem])

<DetailsList
    columns={columns}
    items={items}
    selection={selection}
    selectionMode={SelectionMode.single}
    selectionPreservedOnEmptyClick={true}
    setKey="exampleList"
/>