shu-c-view/packages/helper/tree.js

rollup 打包vue@2.7组件库框架

import _omit from 'lodash/omit';
/**
 * @description 将树平铺为数组
 * @param { object } tree 数据
 * @param { String } children 树形结构关联的属性
 */
const getNodeMap = (node, parentNode, children) => {
  //   node.parentNode = JSON.parse(JSON.stringify(parentNode));
  const nodeMap = [node];

  if (node[children] && node[children].length) {
    node[children].forEach(item =>
      nodeMap.push(...getNodeMap(item, node, children))
    );
  }

  return nodeMap;
};

export const getTreeMap = (tree, children = 'children') => {
  if (!(tree instanceof Array)) {
    return;
  }

  const treeMap = [];

  tree.forEach(node => {
    treeMap.push(...getNodeMap(node, tree, children));
  });

  return treeMap;
};

/**
 * @description 查找节点在树中的路径
 * @param {*} tree 树的数据
 * @param {*} id 查找的id
 * @param {*} nodeKey 节点标识符
 * @param {*} children 子节点标识
 * @returns
 */
export const getNodePath = ({
  tree,
  id,
  nodeKey = 'id',
  children = 'children',
  dataAll = false,
  needKey
}) => {
  if (!Array.isArray(tree) || tree.length === 0) {
    return [];
  }

  const path = [];
  const treeFindPath = (childTree, childId, childPath) => {
    // eslint-disable-next-line no-restricted-syntax
    for (const item of childTree) {
      let itemData = null;
      if (needKey) {
        itemData = dataAll ? _omit(item, children) : item[needKey];
      } else {
        itemData = dataAll ? _omit(item, children) : item[nodeKey];
      }
      childPath.push(itemData);

      if (item[nodeKey] === childId) {
        return childPath;
      }

      if (item[children]) {
        const findChildren = treeFindPath(item[children], childId, childPath);

        if (findChildren.length) {
          return findChildren;
        }
      }

      childPath.pop();
    }

    return [];
  };

  return treeFindPath(tree, id, path);
};