先看效果：
组件代码：
<template>
<view class="next-tree">
<view class="next-tree-mask" :class="{'show':showTree}" @tap="_cancel"></view>
<view class="next-tree-cnt" :class="{'show':showTree}">
<view class="next-tree-bar">
<view class="next-tree-bar-cancel" :style="{'color':cancelColor}" hover-class="hover-c" @tap="_cancel">取消</view>
<view class="next-tree-bar-title" :style="{'color':titleColor}">{
{title}}</view>
<view class="next-tree-bar-confirm" :style="{'color':confirmColor}" hover-class="hover-c" @tap="_confirm">确定</view>
</view>
<view class="next-tree-view">
<scroll-view class="next-tree-view-sc" :scroll-y="true">
<block v-for="(item, index) in treeList" :key="index">
<view class="next-tree-item" :style="[{
paddingLeft: item.rank*15 + 'px',
zIndex: item.rank*-1 +50
}]"
:class="{
border: border === true,
show: item.show,
last: item.lastRank,
showchild: item.showChild,
open: item.open,
}">
<view class="next-tree-label" @tap.stop="_treeItemTap(item, index)">
<image class="next-tree-icon" :src="item.lastRank ? lastIcon : item.showChild ? currentIcon : defaultIcon"></image>
{
{item.name}}
</view>
<view class="next-tree-check" @tap.stop="_treeItemSelect(item, index)" v-if="selectParent?true:item.lastRank">
<view class="next-tree-check-yes" v-if="item.checked" :class="{'radio':!multiple}" :style="{'border-color':confirmColor, 'background-color':confirmColor}">
<view class="next-tree-check-yes-b" :style="{'background-color':confirmColor}">
<text class="icon-text">✔</text>
</view>
</view>
<view class="next-tree-check-no" v-else :class="{'radio':!multiple}" :style="{'border-color':confirmColor}"></view>
</view>
</view>
</block>
</scroll-view>
</view>
</view>
</view>
</template>
<script>
export default {
name: "next-tree",
props: {
treeData: {
type: Array,
default: function() {
return []
}
},
valueKey: {
type: String,
default: 'id'
},
labelKey: {
type: String,
default: 'label'
},
childrenKey: {
type: String,
default: 'children'
},
title: {
type: String,
default: ''
},
multiple: { // 是否可以多选
type: Boolean,
default: false
// default: true
},
selectParent: { //是否可以选父级
type: Boolean,
default: false
},
foldAll: { //折叠时关闭所有已经打开的子集，再次打开时需要一级一级打开
type: Boolean,
default: false
},
confirmColor: { // 确定按钮颜色
type: String,
default: '#f9ae3d' // #f9ae3d
},
cancelColor: { // 取消按钮颜色
type: String,
default: '' // #757575
},
titleColor: { // 标题颜色
type: String,
default: '' // #757575
},
currentIcon: { // 展开时候的ic
type: String,
default: 'data:image/png;base64,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'
},
defaultIcon: { // 折叠时候的ic
type: String,
default: 'data:image/png;base64,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'
},
lastIcon: { // 没有子集的ic
type: String,
default: ''
},
border: { // 是否有分割线
type: Boolean,
default: false
},
},
data() {
return {
showTree: false,
treeList: [],
selectIndex: -1,
childNums: [],
rt:[],
rtName:[]
}
},
computed: {},
methods: {
_show() {
this.showTree = true
},
_hide() {
this.showTree = false
},
_cancel() {
this._hide()
this.$emit("cancel", '');
},
_confirm() {
this.rt=[];
this.rtName=[];
// 处理所选数据
this.treeList.forEach((item, i) => {
if(item.id==100&&item.checked){
return this.confirmEach(this.treeData)
}
if (item.checked&&item.parentId&&item.parentId!="100") {
this.rt.push(item.id)
this.rtName.push(item.name)
}
})
this._hide()
this.$emit("confirm", {id:this.rt,name:this.rtName});
},
confirmEach(list){
list.forEach((item,index)=>{
if(item.isDy){
this.rtName.push(item.name)
this.rt.push(item.id)
}
if(item.children&&item.children.length>0) this.confirmEach(item.children)
})
},
//扁平化树结构
_renderTreeList(list = [], rank = 0, parentId = [], parents = []) {
list.forEach(item => {
this.treeList.push({
id: item[this.valueKey],
name: item[this.labelKey],
source: item,
parentId, // 父级id数组
parents, // 父级id数组
rank, // 层级
showChild: false, //子级是否显示
open: false, //是否打开
show: rank === 0, // 自身是否显示
hideArr: [],
orChecked: item.checked ? item.checked : false,
checked: item.checked ? item.checked : false,
})
if (Array.isArray(item[this.childrenKey]) && item[this.childrenKey].length > 0) {
// console.log(item)
let parentid = [...parentId],
parentArr = [...parents],
childrenid = [];
delete parentArr.children
parentid.push(item[this.valueKey]);
parentArr.push({
[this.valueKey]: item[this.valueKey],
[this.labelKey]: item[this.labelKey]
})
this._renderTreeList(item[this.childrenKey], rank + 1, parentid, parentArr);
} else {
this.treeList[this.treeList.length - 1].lastRank = true;
}
})
},
// 处理默认选择
_defaultSelect() {
this.treeList.forEach((v, i) => {
if (v.checked) {
this.treeList.forEach((v2, i2) => {
if (v.parentId.toString().indexOf(v2.parentId.toString()) >= 0) {
v2.show = true
if (v.parentId.includes(v2.id)) {
v2.showChild = true;
v2.open = true;
}
}
})
}
})
},
// 点击
_treeItemTap(item, index) {
if (item.lastRank === true) {
//点击最后一级时触发事件
this.treeList[index].checked = !this.treeList[index].checked
this._fixMultiple(index)
return;
}
let list = this.treeList;
let id = item.id;
item.showChild = !item.showChild;
item.open = item.showChild ? true : !item.open;
list.forEach((childItem, i) => {
if (item.showChild === false) {
//隐藏所有子级
if (!childItem.parentId.includes(id)) {
return;
}
if (!this.foldAll) {
if (childItem.lastRank !== true && !childItem.open) {
childItem.showChild = false;
}
// 为隐藏的内容添加一个标记
if (childItem.show) {
childItem.hideArr[item.rank] = id
}
} else {
if (childItem.lastRank !== true) {
childItem.showChild = false;
}
}
childItem.show = false;
} else {
// 打开子集
if (childItem.parentId[childItem.parentId.length - 1] === id) {
childItem.show = true;
}
// 打开被隐藏的子集
if (childItem.parentId.includes(id) && !this.foldAll) {
// console.log(childItem.hideArr)
if (childItem.hideArr[item.rank] === id) {
childItem.show = true;
if (childItem.open && childItem.showChild) {
childItem.showChild = true
} else {
childItem.showChild = false
}
childItem.hideArr[item.rank] = null
}
}
}
})
},
_treeItemSelect(item, index) {
this.treeList[index].checked = !this.treeList[index].checked
// 选父级, 子级自动全选
this.syncChecked(this.treeList, item.id, this.treeList[index].checked)
if(item.rank > 0) {
item.parentId.forEach((pid, indexP) => {
const parent = this.treeList.filter(i => i.id === pid)
const childNum = parent.length > 0 ? parent[0].childNum : 0
if(this.childNums[pid] === undefined) {
this.childNums[pid] = 1
} else if(this.childNums[pid] < childNum) {
this.childNums[pid]++
}
})
//子级选择/选满/取消选择, 父级往上同步状态
this.setAncestors(item.parentId, this.treeList[index].checked)
}
this._fixMultiple(index)
},
syncChecked (trees, pid, checked) {
trees.forEach((item,index) => {
if(item.parentId.includes(pid)) {
this.treeList[index].checked = checked
this.syncChecked(trees, item.id, checked)
} else if(item.children !== undefined) {
this.syncChecked(item.children, pid, checked)
}
})
},
setAncestors (pids, checked) {
this.treeList.forEach((item,index) => {
if(pids.includes(item.id)) {
if(checked && this.childNums[item.id] !== undefined && item.childNum === this.childNums[item.id]) {
// 子级全部选中, 父级才选中
this.treeList[index].checked = true
} else {
this.treeList[index].checked = false
}
this.setAncestors(item.parentId, checked)
}
})
},
// _treeItemSelect(item, index) {
// this.treeList[index].checked = !this.treeList[index].checked
// this._fixMultiple(index)
// },
// 处理单选多选
_fixMultiple(index) {
if (!this.multiple) {
// 如果是单选
this.treeList.forEach((v, i) => {
if (i != index) {
this.treeList[i].checked = false
} else {
this.treeList[i].checked = true
}
})
}
},
// 重置数据
_reTreeList() {
this.treeList.forEach((v, i) => {
this.treeList[i].checked = v.orChecked
})
},
_initTree(treeData = this.treeData){
this.treeList = [];
this._renderTreeList(treeData);
this.$nextTick(() => {
this._defaultSelect(treeData)
})
}
},
mounted() {
console.log('----------next-tree组件完成挂载demo------------')
this._initTree();
this.$watch(() => this.treeData, (list) => {
this._initTree(list);
}, {deep: true, immediate: true})
this.$watch(() => [this.multiple, this.selectParent], () => {
if (this.treeData.length) {
this._reTreeList();
}
}, {deep: true, immediate: true})
}
}
</script>
<style scoped>
@import "./style.css";
</style>
.next-tree-mask {
position: fixed;
top: 0rpx;
right: 0rpx;
bottom: 0rpx;
left: 0rpx;
z-index: 9998;
background-color: rgba(0, 0, 0, 0.6);
opacity: 0;
transition: all 0.3s ease;
visibility: hidden;
}
.next-tree-mask.show {
visibility: visible;
opacity: 1;
}
.next-tree-cnt {
position: fixed;
top: 0rpx;
right: 0rpx;
bottom: 0rpx;
left: 0rpx;
z-index: 9999;
top: 160rpx;
transition: all 0.3s ease;
transform: translateY(100%);
}
.next-tree-cnt.show {
transform: translateY(0);
}
.next-tree-bar {
background-color: #fff;
height: 72rpx;
padding-left: 20rpx;
padding-right: 20rpx;
display: flex;
justify-content: space-between;
align-items: center;
box-sizing: border-box;
border-bottom-width: 1rpx !important;
border-bottom-style: solid;
border-bottom-color: #f5f5f5;
font-size: 32rpx;
color: #757575;
line-height: 1;
}
.next-tree-bar-confirm {
color: #f9ae3d;
}
.next-tree-view {
position: absolute;
top: 0rpx;
right: 0rpx;
bottom: 0rpx;
left: 0rpx;
top: 72rpx;
background-color: #fff;
padding-top: 20rpx;
padding-right: 20rpx;
padding-bottom: 20rpx;
padding-left: 20rpx;
}
.next-tree-view-sc {
height: 100%;
overflow: hidden;
}
.next-tree-item {
display: flex;
justify-content: space-between;
align-items: center;
font-size: 26rpx;
color: #757575;
line-height: 1;
height: 0;
opacity: 0;
transition: 0.2s;
position: relative;
overflow: hidden;
}
.next-tree-item.show {
height: 80rpx;
opacity: 1;
}
.next-tree-item.showchild:before {
transform: rotate(90deg);
}
.next-tree-item.border {
border-bottom: 1rpx solid rgba(204,204,204,0.2);
}
.next-tree-item.last:before {
opacity: 0;
}
.next-tree-icon {
width: 26rpx;
height: 26rpx;
margin-right: 8rpx;
}
.next-tree-label {
flex: 1;
display: flex;
align-items: center;
height: 100%;
line-height: 1.2;
}
.next-tree-check {
width: 40px;
height: 40px;
display: flex;
justify-content: center;
align-items: center;
}
.next-tree-check-yes,
.next-tree-check-no {
width: 20px;
height: 20px;
border-top-left-radius: 20%;
border-top-right-radius: 20%;
border-bottom-right-radius: 20%;
border-bottom-left-radius: 20%;
border-top-width: 1rpx;
border-left-width: 1rpx;
border-bottom-width: 1rpx;
border-right-width: 1rpx;
border-style: solid;
border-color: #f9ae3d;
display: flex;
justify-content: center;
align-items: center;
box-sizing: border-box;
}
.next-tree-check-yes-b {
border-top-left-radius: 20%;
border-top-right-radius: 20%;
border-bottom-right-radius: 20%;
border-bottom-left-radius: 20%;
background-color: #f9ae3d;
color: #fff;
}
.next-tree-check-yes-b .icon-text {
font-size: 14px;
font-weight: normal;
font-family: uicon-iconfont;
display: flex;
flex-direction: row;
align-items: center;
}
.next-tree-check .radio {
border-top-left-radius: 50%;
border-top-right-radius: 50%;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
}
.next-tree-check .radio .next-tree-check-yes-b {
border-top-left-radius: 50%;
border-top-right-radius: 50%;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
}
.hover-c {
opacity: 0.6;
}
参数配置：
| dataList | Array | [] | 数据源 |
| idKey | String | id | 显示的主键key值 |
| nameKey | String | name | 显示的名字key值 |
| phoneKey | String | phone | 显示的电话key值 |
| imgKey | String | img | 显示的头像key值 |
| radius | Number | 4rpx | 头像圆角(rpx、px、%) |
| showAvatar | Boolean | true | 是否显示头像 |
| isInterlock | Boolean | false | 是否双向联动 |
| 事件名 | 说明 | 类型 | 回调参数 |
|---|---|---|---|
| itemclick | 菜单项item点击事件 | emit | Object |
页面使用：
<next-tree ref="qiantree" :selectParent="true" labelKey="name" valueKey="id"
:multiple="true" :treeData="rangeList"
@confirm="onconfirm" />
import nextTree from '../components/next-tree/next-tree.vue'
components: {
nextTree
},
<next-tree ref="qiantree" :selectParent="true" labelKey="name" valueKey="id"
:multiple="true" :treeData="rangeList"
@confirm="onconfirm" />
onconfirm(list) {
console.log('选中项的数量列表list：', list)
},