52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
import * as React from 'react';
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import { convertChildrenToData } from "../utils/legacyUtil";
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function buildTreeStructure(nodes, config) {
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const {
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id,
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pId,
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rootPId
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} = config;
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const nodeMap = new Map();
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const rootNodes = [];
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nodes.forEach(node => {
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const nodeKey = node[id];
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const clonedNode = {
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...node,
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key: node.key || nodeKey
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};
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nodeMap.set(nodeKey, clonedNode);
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});
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nodeMap.forEach(node => {
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const parentKey = node[pId];
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const parent = nodeMap.get(parentKey);
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if (parent) {
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parent.children = parent.children || [];
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parent.children.push(node);
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} else if (parentKey === rootPId || rootPId === null) {
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rootNodes.push(node);
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}
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});
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return rootNodes;
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}
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/**
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* 将 `treeData` 或 `children` 转换为格式化的 `treeData`。
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* 如果 `treeData` 或 `children` 没有变化，则不会重新计算。
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*/
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export default function useTreeData(treeData, children, simpleMode) {
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return React.useMemo(() => {
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if (treeData) {
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if (simpleMode) {
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const config = {
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id: 'id',
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pId: 'pId',
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rootPId: null,
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...(typeof simpleMode === 'object' ? simpleMode : {})
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};
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return buildTreeStructure(treeData, config);
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}
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return treeData;
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}
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return convertChildrenToData(children);
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}, [children, simpleMode, treeData]);
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} |