29 lines
1.0 KiB
JavaScript
29 lines
1.0 KiB
JavaScript
import * as React from 'react';
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import { groupKeysMap } from '../../_util/transKeys';
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function useData(dataSource, rowKey, targetKeys) {
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const mergedDataSource = React.useMemo(() => (dataSource || []).map(record => {
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if (rowKey) {
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record = Object.assign(Object.assign({}, record), {
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key: rowKey(record)
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});
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}
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return record;
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}), [dataSource, rowKey]);
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const [leftDataSource, rightDataSource] = React.useMemo(() => {
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const leftData = [];
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const rightData = new Array((targetKeys || []).length);
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const targetKeysMap = groupKeysMap(targetKeys || []);
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mergedDataSource.forEach(record => {
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// rightData should be ordered by targetKeys
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// leftData should be ordered by dataSource
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if (targetKeysMap.has(record.key)) {
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rightData[targetKeysMap.get(record.key)] = record;
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} else {
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leftData.push(record);
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}
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});
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return [leftData, rightData];
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}, [mergedDataSource, targetKeys, rowKey]);
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return [mergedDataSource, leftDataSource, rightDataSource];
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}
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export default useData; |