我尝试将react-window的fixedSizeGrid
与react-infinite-loader
一起使用。如前所述,无限加载器不支持fixedSizeGrid进行无限加载。因此,我发现了onItemsRendered
覆盖方法。现在,我正在尝试使用它呈现数据并在滚动条上加载。但是,当我滚动时,我的数据没有加载。这是我传递数据和我的ThumbGrid
组件的代码片段以及fetchMore(graphql)(父组件的数据总大小)。谁能帮我解决这个问题:
/*
* ThumbGrid Component
*
*/
<AutoSizer disableHeight>
{({ width }) => {
const columnCount = Math.floor(width / 175);
return (
<InfiniteLoad
isItemLoaded={isItemLoaded}
itemCount={100}
loadMoreItems={fetchMore}
>
{({ onItemsRendered, ref }: any) => {
const newItemsRendered = (gridData: any) => {
const useOverscanForLoading = true;
const {
visibleRowStartIndex,
visibleRowStopIndex,
visibleColumnStopIndex,
overscanRowStartIndex,
overscanRowStopIndex,
overscanColumnStopIndex
} = gridData;
const endCol =
(useOverscanForLoading || true
? overscanColumnStopIndex
: visibleColumnStopIndex) + 1;
const startRow =
useOverscanForLoading || true
? overscanRowStartIndex
: visibleRowStartIndex;
const endRow =
useOverscanForLoading || true
? overscanRowStopIndex
: visibleRowStopIndex;
const visibleStartIndex = startRow * endCol;
const visibleStopIndex = endRow * endCol;
onItemsRendered({
//call onItemsRendered from InfiniteLoader so it can load more if needed
visibleStartIndex,
visibleStopIndex
});
};
return (
<Grid
width={width}
height={height || 700}
columnWidth={105}
columnCount={columnCount}
itemData={{ list: data, columnCount }}
ref={ref}
innerElementType={innerElementType}
onItemsRendered={newItemsRendered}
rowCount={200}
rowHeight={264}
>
{({columnIndex, rowIndex, data, style}) => {
const { list, columnCount } = data;
const item = list[rowIndex * columnCount + columnIndex];
return item ? <ThumbCard style={style} {...item} /> : null;
}}
</Grid>
);
}}
</InfiniteLoad>
);
}}
</AutoSizer>
这是我的父级组件:
export default function() {
....
function loadMore() {
fetchMore({
variables: {
offset: data.artist.albums.items.length,
limit: 10
},
updateQuery: {....}
});
}
return (<div className="album-cell cell-block">
<ThumbGrid
data={data.artist.albums.items}
height={1200}
total={data.artist.albums.total}
fetchMore={loadMore}
/>
</div>)
}
答案 0 :(得分:1)
所以我终于在Gerrit的帮助下实现了目标。我应该直接将prop的loadMore
函数传递给fetchMore
方法,并且应该将style
传递给ThumbCard
。还有一个令人困惑的地方是我试图使用codesandbox进行演示,它应该显示一些模拟数据,然后它必须使用状态。我将其传递给ThumbGrid,因此更新的数据将触发ThumbGrid重新呈现。