antd
Version:
An enterprise-class UI design language and React components implementation
38 lines • 1.98 kB
JavaScript
import _toConsumableArray from "@babel/runtime/helpers/esm/toConsumableArray";
import * as React from 'react';
import { useEvent, useMergedState } from 'rc-util';
const EMPTY_KEYS = [];
function filterKeys(keys, dataKeys) {
const filteredKeys = keys.filter(key => dataKeys.has(key));
return keys.length === filteredKeys.length ? keys : filteredKeys;
}
function flattenKeys(keys) {
return Array.from(keys).join(';');
}
function useSelection(leftDataSource, rightDataSource, selectedKeys) {
// Prepare `dataSource` keys
const [leftKeys, rightKeys] = React.useMemo(() => [new Set(leftDataSource.map(src => src === null || src === void 0 ? void 0 : src.key)), new Set(rightDataSource.map(src => src === null || src === void 0 ? void 0 : src.key))], [leftDataSource, rightDataSource]);
// Selected Keys
const [mergedSelectedKeys, setMergedSelectedKeys] = useMergedState(EMPTY_KEYS, {
value: selectedKeys
});
const sourceSelectedKeys = React.useMemo(() => filterKeys(mergedSelectedKeys, leftKeys), [mergedSelectedKeys, leftKeys]);
const targetSelectedKeys = React.useMemo(() => filterKeys(mergedSelectedKeys, rightKeys), [mergedSelectedKeys, rightKeys]);
// // Reset when data changed
React.useEffect(() => {
setMergedSelectedKeys([].concat(_toConsumableArray(filterKeys(mergedSelectedKeys, leftKeys)), _toConsumableArray(filterKeys(mergedSelectedKeys, rightKeys))));
}, [flattenKeys(leftKeys), flattenKeys(rightKeys)]);
// Update keys
const setSourceSelectedKeys = useEvent(nextSrcKeys => {
setMergedSelectedKeys([].concat(_toConsumableArray(nextSrcKeys), _toConsumableArray(targetSelectedKeys)));
});
const setTargetSelectedKeys = useEvent(nextTargetKeys => {
setMergedSelectedKeys([].concat(_toConsumableArray(sourceSelectedKeys), _toConsumableArray(nextTargetKeys)));
});
return [
// Keys
sourceSelectedKeys, targetSelectedKeys,
// Updater
setSourceSelectedKeys, setTargetSelectedKeys];
}
export default useSelection;