import type { InsertNodeParams, Keys, ReplaceFields } from './typing';
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import type { Ref, ComputedRef } from 'vue';
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import type { TreeDataItem } from 'ant-design-vue/es/tree/Tree';
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import { cloneDeep } from 'lodash-es';
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import { unref } from 'vue';
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import { forEach } from '/@/utils/helper/treeHelper';
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export function useTree(
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treeDataRef: Ref<TreeDataItem[]>,
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getReplaceFields: ComputedRef<ReplaceFields>,
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) {
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function getAllKeys(list?: TreeDataItem[]) {
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const keys: string[] = [];
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const treeData = list || unref(treeDataRef);
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return keys;
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for (let index = 0; index < treeData.length; index++) {
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const node = treeData[index];
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keys.push(node[keyField]!);
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const children = node[childrenField];
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if (children && children.length) {
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keys.push(...(getAllKeys(children) as string[]));
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}
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}
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return keys as Keys;
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}
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// get keys that can be checked and selected
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function getEnabledKeys(list?: TreeDataItem[]) {
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const keys: string[] = [];
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const treeData = list || unref(treeDataRef);
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return keys;
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for (let index = 0; index < treeData.length; index++) {
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const node = treeData[index];
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node.disabled !== true && node.selectable !== false && keys.push(node[keyField]!);
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const children = node[childrenField];
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if (children && children.length) {
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keys.push(...(getEnabledKeys(children) as string[]));
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}
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}
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return keys as Keys;
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}
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function getChildrenKeys(nodeKey: string | number, list?: TreeDataItem[]): Keys {
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const keys: Keys = [];
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const treeData = list || unref(treeDataRef);
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return keys;
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for (let index = 0; index < treeData.length; index++) {
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const node = treeData[index];
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const children = node[childrenField];
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if (nodeKey === node[keyField]) {
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keys.push(node[keyField]!);
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if (children && children.length) {
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keys.push(...(getAllKeys(children) as string[]));
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}
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} else {
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if (children && children.length) {
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keys.push(...getChildrenKeys(nodeKey, children));
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}
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}
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}
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return keys as Keys;
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}
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// Update node
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function updateNodeByKey(key: string, node: TreeDataItem, list?: TreeDataItem[]) {
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if (!key) return;
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const treeData = list || unref(treeDataRef);
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return;
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for (let index = 0; index < treeData.length; index++) {
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const element: any = treeData[index];
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const children = element[childrenField];
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if (element[keyField] === key) {
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treeData[index] = { ...treeData[index], ...node };
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break;
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} else if (children && children.length) {
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updateNodeByKey(key, node, element[childrenField]);
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}
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}
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}
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// Expand the specified level
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function filterByLevel(level = 1, list?: TreeDataItem[], currentLevel = 1) {
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if (!level) {
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return [];
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}
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const res: (string | number)[] = [];
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const data = list || unref(treeDataRef) || [];
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for (let index = 0; index < data.length; index++) {
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const item = data[index];
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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const key = keyField ? item[keyField] : '';
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const children = childrenField ? item[childrenField] : [];
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res.push(key);
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if (children && children.length && currentLevel < level) {
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currentLevel += 1;
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res.push(...filterByLevel(level, children, currentLevel));
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}
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}
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return res as string[] | number[];
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}
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/**
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* 添加节点
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*/
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function insertNodeByKey({ parentKey = null, node, push = 'push' }: InsertNodeParams) {
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const treeData: any = cloneDeep(unref(treeDataRef));
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if (!parentKey) {
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treeData[push](node);
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treeDataRef.value = treeData;
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return;
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}
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return;
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forEach(treeData, (treeItem) => {
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if (treeItem[keyField] === parentKey) {
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treeItem[childrenField] = treeItem[childrenField] || [];
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treeItem[childrenField][push](node);
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return true;
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}
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});
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treeDataRef.value = treeData;
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}
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/**
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* 批量添加节点
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*/
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function insertNodesByKey({ parentKey = null, list, push = 'push' }: InsertNodeParams) {
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const treeData: any = cloneDeep(unref(treeDataRef));
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if (!list || list.length < 1) {
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return;
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}
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if (!parentKey) {
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for (let i = 0; i < list.length; i++) {
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treeData[push](list[i]);
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}
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} else {
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return;
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forEach(treeData, (treeItem) => {
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if (treeItem[keyField] === parentKey) {
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treeItem[childrenField] = treeItem[childrenField] || [];
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for (let i = 0; i < list.length; i++) {
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treeItem[childrenField][push](list[i]);
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}
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treeDataRef.value = treeData;
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return true;
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}
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});
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}
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}
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// Delete node
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function deleteNodeByKey(key: string, list?: TreeDataItem[]) {
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if (!key) return;
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const treeData = list || unref(treeDataRef);
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const { key: keyField, children: childrenField } = unref(getReplaceFields);
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if (!childrenField || !keyField) return;
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for (let index = 0; index < treeData.length; index++) {
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const element: any = treeData[index];
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const children = element[childrenField];
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if (element[keyField] === key) {
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treeData.splice(index, 1);
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break;
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} else if (children && children.length) {
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deleteNodeByKey(key, element[childrenField]);
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}
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}
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}
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return {
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deleteNodeByKey,
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insertNodeByKey,
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insertNodesByKey,
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filterByLevel,
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updateNodeByKey,
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getAllKeys,
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getChildrenKeys,
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getEnabledKeys,
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};
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}
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