import { Tree,Button,Card } from 'antd'; import {useEffect, useState} from 'react'; import './App.css' const flattren = (treeData)=>{ let res = [] const mapTreeHelper =(node)=>{ if (!node.children) { res.push(node) return; } if(node.children){ res.push(node) node.children.forEach(item=>mapTreeHelper(item)) } } treeData.forEach(node => mapTreeHelper(node)); return res } const treeData = [ { title: '0-0', key: '0-0', // children: [ // { // title: '0-0-0', // key: '0-0-0', // // disabled: true, // children: [ // { // title: '0-0-0-0', // key: '0-0-0-0', // children:[ // { // title: '0-0-0-0-0', // key: '0-0-0-0-0', // children:[ // { // title: '0-0-0-0-0-0', // key: '0-0-0-0-0-0', // // disabled: true, // } // ] // }, // { // title: '0-0-0-0-1', // key: '0-0-0-0-1', // } // ] // }, // { // title: '0-0-0-1', // key: '0-0-0-1', // }, // { // title: '0-0-0-2', // key: '0-0-0-2', // }, // ], // }, // { // title: '0-0-1', // key: '0-0-1', // children: [ // { // title: '0-0-1-0', // key: '0-0-1-0', // }, // { // title: '0-0-1-1', // key: '0-0-1-1', // }, // { // title: '0-0-1-2', // key: '0-0-1-2', // }, // ], // }, // { // title: '0-0-2', // key: '0-0-2', // }, // ], }, { title: '0-1', key: '0-1', children: [ { title: '0-1-0-0', key: '0-1-0-0', }, { title: '0-1-0-1', key: '0-1-0-1', }, { title: '0-1-0-2', key: '0-1-0-2', }, ], }, { title: '0-2', key: '0-2-222222222', }, ]; const App = () => { const [expandedKeys, setExpandedKeys] = useState(['0-0-0', '0-0-1']); const [autoExpandParent, setAutoExpandParent] = useState(true); const [checkedKeys, setCheckedKeys] = useState(['0-0-0']); //keys数组 const [selectedKeys, setSelectedKeys] = useState([]); const onExpand = (expandedKeysValue) => { console.log('onExpand', expandedKeysValue); // if not set autoExpandParent to false, if children expanded, parent can not collapse. // or, you can remove all expanded children keys. setExpandedKeys(expandedKeysValue); setAutoExpandParent(false); }; const onCheck = (checkedKeysValue,a) => { console.log('onCheck--------checkedKeysValue', checkedKeysValue , a.checkedNodes.filter(item=>{ return !item.children })); let checkLeefsValue = a.checkedNodes.filter(item=>{ return !item.children }) setCheckedKeys(checkedKeysValue); //? setRowData(checkLeefsValue) }; const onSelect = (selectedKeysValue, info) => { console.log('onSelect', info); setSelectedKeys(selectedKeysValue); }; const onButtonClick = ()=>{ const res = mapTree(tree, rowData, {disabled: true}); setTree([...res]); updateCardRowData([...rowData]); } const mapTree = (tree,rowData, {disabled}) => { const mapTreeHelper = (node) => { if (rowData.some((row) => row.key === node.key)) { node.disabled = disabled; node.keysReset = +new Date(); } if (!node.children) return; node.children.forEach(item => mapTreeHelper(item)); } tree.forEach(node => mapTreeHelper(node)); return tree; } const deletefun = (delNode)=>{ const res = mapTree(tree, [delNode], { disabled: false }) console.log('deleteres,进行左边树的渲染哦', res); //t]ree的child的disable 1.删除 。改 rowdata nonono,不要改rowdata,只需要cardRowData,row 2.改tree的disable。 setTree([...res]) // setRowData(rowData.filter(old => old.key !== delNode.key)) updateCardRowData(cardRowData.filter(old => old.key !== delNode.key)); } const [tree, setTree] = useState(treeData); //为了重新渲染 const [rowData,setRowData] = useState([]) // row是child叶子节点。 const [cardRowData,updateCardRowData] = useState([]) useEffect(()=>{ console.log("row",rowData)//异步 },[rowData]) /** * const rollback = []; * */ return ( <div className="tree-select"> <div className="tree-left"> <div className="tree-left-top">项目选择</div> <div className="tree-left-corn"> <Tree key={+new Date()} checkable onExpand={onExpand} expandedKeys={expandedKeys} autoExpandParent={autoExpandParent} onCheck={onCheck} checkedKeys={checkedKeys} onSelect={onSelect} selectedKeys={selectedKeys} treeData={tree} /> </div> </div> <div className="tree-middle" onClick={ onButtonClick }> <Button/> </div> <div className="tree-right"> <div className="tree-right-top">项目选择</div> <div className="tree-right-list"> <Card> <ul> { (cardRowData || []).map(item => <li key={item.key} > <span>{item.title}</span> <button onClick={() => {deletefun(item)}}> del </button> </li> ) } </ul> </Card> </div> </div> </div> ); }; export default App;
标签:node,const,title,tree,React,item,bug2.0,key,children From: https://www.cnblogs.com/hacker-caomei/p/17059033.html