<template>
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<div class="wrap">
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<div class="bread">
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<el-breadcrumb separator="el-icon-arrow-right">
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<el-breadcrumb-item>{{ breadLabel }}</el-breadcrumb-item>
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</el-breadcrumb>
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</div>
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<div class="treeBox">
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<el-tree
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ref="tree"
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:props="defaultProps"
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node-key="id"
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:data="dirData"
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:expand-on-click-node="false"
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:default-expanded-keys="[1, 2, 3, 4, 5, 6, 7, 8, 9]"
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draggable
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@node-click="handleNodeClick"
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@node-drop="handleDrop"
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>
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<span class="custom-tree-node" slot-scope="{ node, data }">
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<span>{{ node.label }}</span>
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<span class="btnBox" v-show="showCata">
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<el-button
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type="text"
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size="mini"
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@click="() => append(data, node)"
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>
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<i class="el-icon-circle-plus"></i>
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</el-button>
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<el-button
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type="text"
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size="mini"
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@click="() => remove(node, data)"
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>
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<i class="el-icon-delete-solid"></i>
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</el-button>
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</span>
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</span>
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</el-tree>
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<div style="margin-left: 130px">
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<el-button @click="sendChange">保存</el-button>
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</div>
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</div>
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</div>
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</template>
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<script>
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import { queryDirTree, updateDirTree } from "../api/api";
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export default {
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name: "catalogueTree",
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props: ["showBtn"],
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data() {
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return {
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showCata: false,
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showBread: false,
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oriData: [], //原始树数据
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dirData: [], //el树数据
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newData: [], //拖动后数据
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breadList: [], //面包屑数组
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breadLabel: "", //面包屑文字
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filterText: "",
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defaultProps: {
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children: "children",
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label: "name",
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},
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};
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},
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methods: {
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// 请求目录树
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getDirTree() {
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queryDirTree().then((res) => {
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if (res.status == 200) {
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this.oriData = res.data;
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this.newData = res.data;
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this.dirData = this.treeData(res.data);
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} else {
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console.log("接口报错");
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}
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});
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},
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treeData(source) {
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let cloneData = JSON.parse(JSON.stringify(source)); // 对源数据深度克隆
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return cloneData.filter((father) => {
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// 循环所有项
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let branchArr = cloneData.filter((child) => father.id == child.pid); // 对比ID，分别上下级菜单，并返回数据
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branchArr.length > 0 ? (father.children = branchArr) : ""; // 给父级添加一个children属性，并赋值
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// 属于同一对象问题，例如：令 a=b、c=1 ，然后再令 b.c=c ， 那么 a.c=b.c=c=1 ；同理，后续令 c.d=2 ,那么 a.c.d 也是=2；
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// 由此循环多次后，就能形成相应的树形数据结构
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return father.pid == -1; // 返回一级菜单
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});
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},
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append(data, parentNode) {
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this.$prompt("请输入名称", "提示", {
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confirmButtonText: "确定",
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cancelButtonText: "取消",
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})
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.then(({ value }) => {
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const newChild = {
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id: value,
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name: value,
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pid: data.id,
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// children: [],
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oid: data.children ? data.children.length + 1 : 1,
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};
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if (!data.children) {
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this.$set(data, "children", []);
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}
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data.children.push(newChild);
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this.newData.push(newChild);
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})
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.catch(() => {
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this.$message({
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type: "info",
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message: "取消输入",
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});
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});
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},
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remove(node, data) {
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const parent = node.parent;
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const children = parent.data.children || parent.data;
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const index = children.findIndex((d) => d.id === data.id);
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let res = children.splice(index, 1);
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},
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flaten(arr) {
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return arr.reduce((p, v, i) => {
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for (let i = 0; i < p.length; i++) {
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if (p[i].children) {
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delete p[i].children;
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}
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}
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return p.concat(v.children ? this.flaten(v.children).concat(v) : v);
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}, []);
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},
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handleNodeClick(data) {
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// console.log(data);
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this.$store.commit("changeNode", data); //传递点击的节点
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this.breadList = [];
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this.getTreeNode(this.$refs.tree.getNode(data.id));
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},
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getTreeNode(node) {
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if (node && node.label) {
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this.breadList.unshift(node.label);
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this.getTreeNode(node.parent); //递归
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this.breadLabel = this.breadList.join(">");
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this.$store.commit("changeCata", this.breadLabel); //传递面包屑路径
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}
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},
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handleDrop(draggingNode, dropNode, dropType, ev) {
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console.log("被拖拽节点", draggingNode);
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// console.log("进入的节点", dropNode);
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// console.log("放置位置", dropType);
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// console.log("事件", ev);
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// if (dropType !== "inner") {
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// // 1.修改父节点pid
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// draggingNode.data.pid = dropNode.data.pid;
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// dropNode.parent.childNodes.forEach((item, index) => {
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// // 2.修改自身顺序oid
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// item.data.oid = index + 1;
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// });
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// }
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// // console.log(draggingNode.data.id);
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// let res = this.oriData.filter((item) => item.id == draggingNode.data.id);
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// console.log(res);
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let paramData = [];
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let data = dropType != "inner" ? dropNode.parent.data : dropNode.data;
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let nodeData =
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dropNode.level == 1 && dropType != "inner" ? data : data.children;
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let pid = "";
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nodeData.forEach((item, i) => {
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if (dropType != "inner") {
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if (draggingNode.data.pid === dropNode.data.pid) {
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pid = item.pid;
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} else {
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pid = dropNode.data.pid;
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}
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} else {
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pid = data.id;
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}
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let collection = {
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id: item.id,
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name: item.name,
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pid,
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oid: i + 1,
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};
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paramData.push(collection);
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});
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// console.log(paramData);
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let arr = [];
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this.oriData.forEach((e) => {
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paramData.forEach((item) => {
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if (item.id === e.id) {
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e = item;
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}
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});
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arr.push(e);
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});
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this.newData = arr;
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},
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sendChange() {
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updateDirTree(this.newData).then((res) => {
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console.log(res);
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if (res.status == 200) {
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this.$message({
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type: "success",
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message: "更新成功!",
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});
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}
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});
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},
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},
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mounted() {
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this.getDirTree();
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},
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watch: {
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showBtn: {
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immediate: true,
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handler(val) {
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if (val) this.showCata = val;
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},
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},
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showBread: {
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immediate: true,
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handler(val) {
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if (val) this.showBread = val;
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},
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},
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},
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};
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</script>
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<style lang="less" scoped>
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.wrap {
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width: 98.5%;
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height: 100%;
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.bread {
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width: 100%;
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height: 5%;
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margin: 0 auto;
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overflow: auto;
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}
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.treeBox {
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margin-top: 1%;
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width: 100%;
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height: 94%;
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overflow: auto;
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}
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}
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</style>
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