封装组件，支持单选，多选，搜索，根据节点id默认选中对应的节点，勾选数据事件触发回调
效果图(会不断更新 和修复一些BUG 记得回来看看哦)
认真看组件配置属性，特别是传值的时候defaultProps 配置的展示key，因为最后有模拟JSON数据所以文章有点长
| 多选效果图： | 单选效果图： |
|---|---|
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一、子组件
<template>
<div>
<el-select
ref="searchSelect"
v-model="mineStatus"
:placeholder="placeholder"
:multiple="!single"
:size="size"
:disabled="disabled"
collapse-tags
:loading="loading"
@change="selectChange"
>
<div style="padding: 10px;">
<el-input
v-if="filterable"
v-model="singleSearch"
placeholder="请输入搜索内容"
:size="size"
clearable
/>
</div>
<el-option
:value="mineStatusValue"
style="position: relative;width: 100%;"
:style="{ height: height + 'px', 'overflow-y': overflow }"
@click="doThis($event)"
>
<div style="height: 100%;" @click="doThis($event)">
<div style="padding-right: 10px;" @click="doThis($event)">
<el-tree
v-if="treeData.length"
ref="tree"
:data="treeData"
:show-checkbox="!single"
style="font-weight: 500;"
highlight-current
:props="defaultProps"
:default-expand-all="defaultExpandAll"
:default-checked-keys="defaultCheckedKeys"
:check-strictly="single"
:filter-node-method="filterNode"
node-key="id"
@check-change="handleCheckChange"
@node-click="clickNode"
/>
</div>
<div
v-if="!treeData.length"
style="width: 100%;height: 100%;background-color: #FFFFFF;text-align: center;"
>
暂无数据
</div>
</div>
<div
v-show="load"
id="load"
style="position: absolute;left: 0;top: 0;height: 200px;width: 100%;"
/>
</el-option>
</el-select>
</div>
</template>
<!-- /**
* 组件说明
* 属性:
* 参数 说明 类型 默认值
* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
* placeholder 输入框占位文本 String '请选择'
* defaultProps 需要使用的展示字段值 Object {children: 'children',label: 'label'}
* data tree 的数据源 Array []
* filterable 是否开启搜索功能 Boolean false
* single tree下拉是否单选 Boolean false
* defaultExpandAll tree是否展开全部节点 Boolean false
* defaultCheckedKeys 默认勾选节点 Array []
* disabled 是否禁止操作 Boolean Array
* size el-option大小尺寸选择 String medium
*
* 事件:
* selectTerrEvent 获取选中对象 返回数组
*/ -->
<script>
const deepFind = (arr, condition, children) => {
const main = []
try {
(function poll(arr, level) {
if (!Array.isArray(arr)) return
for (let i = 0; i < arr.length; i++) {
const item = arr[i]
main[level] = item
const isFind = (condition && condition(item, i, level)) || false
if (isFind) {
throw Error
} else if (children && item[children] && item[children].length) {
poll(item[children], level + 1)
} else if (i === arr.length - 1) {
main.length = main.length - 1
}
}
})(arr, 0)
} catch (err) {}
return main
}
export default {
props: {
placeholder: {
type: String,
required: false,
default: '请选择'
},
defaultProps: {
// 需要使用的展示字段值
type: Object,
default: () => ({
children: 'children',
label: 'label'
})
},
filterable: {
type: Boolean, // 是否开启搜索
default: false
},
single: {
type: Boolean, // 是否单选
default: false
},
data: {
type: Array, // 数据
default: () => []
},
defaultExpandAll: {
type: Boolean, // 是否展开节点
default: false
},
defaultCheckedKeys: {
type: Array,
default: () => []
},
size: {
type: String,
default: 'medium'
},
disabled: {
type: Boolean,
default: false
}
},
data() {
return {
overflow: 'hidden',
height: 40,
load: false,
mineStatus: '',
mineStatusValue: [],
loading: false,
deferTimer: null, // 多选复选框高频查找的数据使用到的延时器变量
loadingTips: null,
SearchData: [], // 搜索的数据
treeData: [], // 渲染树的变量
callbackDefault: null, // 更新数据 高频回调事件使用到的 延时器变量
// timeID: null, // 搜索防抖
singleSearch: '', // 单选搜索
firstTime: false // 初次加载 状态
}
},
watch: {
singleSearch(newValue, oldValue) {
this.$refs.tree.filter(newValue)
},
// 更新数据/清空输入框
data(n) {
if (this.firstTime) {
if (Array.isArray(n)) {
if (n.length) {
this.height = 200
this.overflow = 'auto'
} else {
this.height = 40
this.overflow = 'hidden'
}
this.mineStatus = ''
this.mineStatusValue = []
this.treeData = n
this.defaultCheckEvent(true)
} else {
console.error('data 属性必须是一个Array')
}
}
},
// 更新勾选数据
defaultCheckedKeys(newValue, oldValue) {
if (this.firstTime) {
clearTimeout(this.callbackDefault)
this.callbackDefault = setTimeout(() => {
this.defaultCheckEvent(true)
}, 300)
}
}
},
created() {
const that = this
let dataType = true
// 等待 接口树 数据获取完成
function dataTerr() {
if (!that.treeData.length && dataType) {
that.mineStatus = '获取数据中...'
setTimeout(() => {
that.treeData = that.data
dataTerr()
}, 400)
} else if (that.treeData.length) {
dataType = false
that.height = 200
that.overflow = 'auto'
that.mineStatus = ''
// 是否开启默认勾选
if (that.defaultCheckedKeys.length) {
that.defaultCheckEvent()
}
// 初次加载 完成
that.firstTime = true
}
}
dataTerr()
// 2.5s后不管有没要获取到数据 都停止
setTimeout(() => {
dataType = false
that.firstTime = true
}, 2500)
},
methods: {
// 过滤数据 返回搜索结果
filterNode(value, data) {
if (!value) return true
return data[this.defaultProps.label].indexOf(value) !== -1
},
// 阻止事件冒泡 解决点击空白区域事件获取错误的数据bug
doThis(event) {
this.$refs.searchSelect.blur()
event.stopPropagation()
},
// select框值改变时候触发的事件
selectChange(e) {
if (this.single || !this.treeData.length) {
return false
}
const arrNew = []
const dataLength = this.mineStatusValue.length
const eleng = e.length
for (let i = 0; i < dataLength; i++) {
for (let j = 0; j < eleng; j++) {
if (e[j] === this.mineStatusValue[i][this.defaultProps.label]) {
arrNew.push(this.mineStatusValue[i])
break
}
}
}
this.$refs.tree.setCheckedNodes(arrNew) // 设置勾选的值
},
// 默认勾选
defaultCheckEvent(lock) {
// 避免 多个监听数据更新时同时并发多次
if (lock) {
this.firstTime = false
}
// 筛选出数据存放
const defaultData = []
// 根据树id 递归树 筛选出对应的数据
if (this.single) {
// 单选
const myarr = deepFind(
this.treeData,
(item, index, level) => item.id === this.defaultCheckedKeys[0],
this.defaultProps.children
)
myarr.forEach((v, l) => {
if (v.id === this.defaultCheckedKeys[0]) {
defaultData.push(v)
}
})
} else {
// 多选
this.defaultCheckedKeys.forEach((id, k) => {
const myarr = deepFind(
this.treeData,
(item, index, level) => item.id === id,
this.defaultProps.children
)
myarr.forEach((v, l) => {
if (v.id === id) {
defaultData.push(v)
}
})
})
}
// 更新输入框内的默认勾选值
const arrLabel = []
const arr = []
defaultData.forEach((item) => {
arrLabel.push(item[this.defaultProps.label])
arr.push(item)
})
this.mineStatusValue = arr
if (this.single) {
this.mineStatus = arrLabel[0]
} else {
this.mineStatus = arrLabel
}
// 解除 状态
if (lock) {
this.firstTime = true
}
this.$emit('selectTerrEvent', defaultData)
if (!this.mineStatus.length) {
this.$refs.tree && this.$refs.tree.setCheckedNodes([])
}
},
// 搜索 监听
search() {
this.loading = true
const val = this.$refs.searchSelect.$data.query
this.SearchData = []
this.treeData = this.data
setTimeout(() => {
this.loading = false
this.$refs.tree.filter(val)
}, 500)
},
// 单选点击 复选框事件 @check="handleCheck"
handleCheck(data) {
if (!this.single) {
return
}
this.$refs.tree.setCheckedKeys([]) // 删除所有选中节点
this.$refs.tree.setCheckedNodes([data]) // 选中已选中节点
},
// 单选模式事件
clickNode(data, node, obj) {
if (!this.single) {
// 多选不执行
const index = this.mineStatusValue.findIndex((d) => d.id === data.id)
if (index > -1) {
this.$refs.tree.setChecked(data, false)
} else {
this.$refs.tree.setChecked(data, true)
}
return
}
const arrLabel = []
const arr = [];
[data].forEach((item) => {
arrLabel.push(item[this.defaultProps.label])
arr.push(item)
})
this.mineStatusValue = arr
this.mineStatus = arrLabel[0]
this.$refs.searchSelect.blur() // 失去焦点 关闭下拉框
// 传递数据给父
this.$emit('selectTerrEvent', [data])
},
// 获取当前复选框 选中的值 赋值到输入框里
handleCheckChange() {
if (this.deferTimer == null) {
this.load = true
this.loadingTips = this.$loading({
lock: true,
text: 'Loading',
spinner: 'el-icon-loading',
background: 'rgba(255, 255, 255, 0.5)',
target: document.getElementById('load')
})
}
const res = this.$refs.tree.getCheckedNodes(true, true) // 这里两个true，1. 是否只是叶子节点 2. 是否包含半选节点（就是使得选择的时候不包含父节点）
const arrLabel = []
const arr = []
res.forEach((item) => {
arrLabel.push(item[this.defaultProps.label])
arr.push(item)
})
clearTimeout(this.deferTimer)
this.deferTimer = setTimeout(() => {
this.mineStatusValue = arr
this.mineStatus = arrLabel
this.load = false
this.loadingTips.close()
this.deferTimer = null
this.$emit('selectTerrEvent', res)
}, 200)
}
}
}
</script>
<style scoped>
.el-tooltip.item {
width: max-content;
display: inline-block;
border: none;
outline: none;
}
.el-select-dropdown__item.hover,
.el-select-dropdown__item:hover {
background-color: #ffffff;
}
.el-select-dropdown__item {
padding: 0;
}
.treedownwidth {
width: 13px !important;
}
.show {
display: block;
}
.comtreedown {
height: 100%;
}
.comtreedown .treedown {
width: 220px;
height: 100%;
display: flex;
flex-direction: column;
color: #ffffff;
position: relative;
}
.comtreedown .treedown .title {
height: 35px;
line-height: 35px;
font-size: 16px;
text-indent: 14px;
border-bottom: 1px solid #fff;
overflow: hidden;
text-overflow: ellipsis !important;
white-space: nowrap !important;
cursor: pointer;
}
.comtreedown .treedown .left {
position: absolute;
z-index: 8;
top: 50%;
right: 0px;
width: 13px;
height: 72px;
margin-top: -36px;
cursor: pointer;
}
.comtreedown .treedown .left img {
display: none;
}
/* 修改默认样式 */
.el-tree-node__expand-icon {
color: #ffffff;
}
.comtreedown .el-tree {
width: 100%;
height: 100%;
padding: 10px;
color: #ffffff;
overflow: auto;
border-bottom-left-radius: 10px;
}
.el-tree-node__content {
width: max-content;
min-width: 100%;
color: #fff;
}
.el-tree-node,
.el-tree-node__children {
min-width: 100%;
width: max-content;
}
.el-tree-node__label {
width: auto;
overflow: hidden;
text-overflow: ellipsis !important;
white-space: nowrap !important;
}
.el-tree-node__children .el-tree-node__label {
width: auto;
overflow: hidden;
-webkit-overflow: hidden;
text-overflow: ellipsis !important;
white-space: nowrap !important;
}
span.el-icon-caret-right:before {
content: "";
}
span.el-icon-caret-right:after {
content: "\E60E";
}
</style>二、父页面
<template>
<div>
<el-form :inline="true" :model="pageParams.params" class="demo-form-inline">
<el-form-item label="下拉树">
<select-tree
size="mini"
:data="getData"
:filterable="true"
:default-expand-all="true"
:default-props="defaultProps"
@selectTerrEvent="selectTerrEvetn"
/>
</el-form-item>
</el-form>
</div>
</template>
<script>
import SelectTree from './select-tree.vue'
export default {
components: {
SelectTree
},
data() {
const _this = this
return {
pageParams: {},
defaultProps: {
children: 'children',
label: 'name'
},
getData: []
}
},
computed: {},
watch: {},
created() {
this.getData = [
{
id: '-1',
name: '前置库系统',
pid: null,
children: [
{
id: '1',
name: 'Mysql',
pid: '-1',
children: [
{
id: '021d75b2eea64d579effd98fcf173c1c',
name: 'mysql连接19',
pid: '1',
children: null
},
{
id: 'dcde763b6fbf4c24af3eb8c419405c7f',
name: 'xp_制作映射表数据',
pid: '1',
children: null
},
{
id: 'c5868ea98e574c10a6396197d8ea0be8',
name: 'SOURCEMySql',
pid: '1',
children: null
},
{
id: 'c7778794bd1f4c24a87bd8384846945d',
name: 'fd',
pid: '1',
children: null
},
{
id: '5206c716b9e34ebcb6d18135a29012c7',
name: 'cx',
pid: '1',
children: null
},
{
id: 'ec358fba11d44d15a96276da2d8c92b6',
name: 'local12345',
pid: '1',
children: null
},
{
id: '08a1d89a54e64c98ba3dfc4c56de70d8',
name: 'fd2',
pid: '1',
children: null
},
{
id: '85a3bace64bf49c49997c89e976c1797',
name: 'fd1',
pid: '1',
children: null
},
{
id: '044bc4a61dc945079592ef6b119f5611',
name: 'xwscon',
pid: '1',
children: null
},
{
id: '2b2add5ab7624561a89e023f1526df4e',
name: 'order',
pid: '1',
children: null
},
{
id: 'cb200d034acf4ea6b729b0b17820b5ee',
name: '206fd',
pid: '1',
children: null
},
{
id: '98ecb1222d9e4c1f9a5db30c44875b8e',
name: 'CJY_CS',
pid: '1',
children: null
},
{
id: '5edfc7e8638845128e44f2a4da7de7eb',
name: '测试数值类型',
pid: '1',
children: null
}
]
},
{
id: '2',
name: 'Oracle',
pid: '-1',
children: [
{
id: 'a3b7f6eec7134de8b85bbd9dc57d07c5',
name: 'local',
pid: '2',
children: null
},
{
id: '4b80404a54d54812bb3409ddf21442ac',
name: 'bzk',
pid: '2',
children: null
},
{
id: '5610963be596416a9deb83ec32a16f19',
name: 'by',
pid: '2',
children: null
},
{
id: 'ead9bd5004b44e8ba791bcb2511d0b11',
name: 'gw测试',
pid: '2',
children: null
},
{
id: '9d717d68fbe141baa8c8380fa52bc51d',
name: 'ORA123',
pid: '2',
children: null
},
{
id: '739a330fdbba4d7ea9378ec169c30e91',
name: '206ORA',
pid: '2',
children: null
},
{
id: 'fb48a2e3177e4c4a910a7a0c81c3e9ac',
name: 'xp_采集流程',
pid: '2',
children: null
},
{
id: '197030e0295c4546ad3087da9c312da2',
name: '测试大小写',
pid: '2',
children: null
},
{
id: 'a9fad7c393b74103ba3beea7719c90e2',
name: 'xp_数据源配置',
pid: '2',
children: null
},
{
id: '34ed62284e624bb0a4ae756fef82c9de',
name: 'oracle连接',
pid: '2',
children: null
},
{
id: '65f4ea98c9de4f6daa7693d2fd0ab43c',
name: '206123',
pid: '2',
children: null
},
{
id: '7d72b8e291464d129c95592752f839ce',
name: 'MT18',
pid: '2',
children: null
},
{
id: '0c6acdf12d554d6ea39d986c596bc4d2',
name: '监控测试',
pid: '2',
children: null
},
{
id: '9724796eb3aa45baa225c936e549bd81',
name: 'SOURCE2',
pid: '2',
children: null
},
{
id: '174987a5a60b45b5beedd088dd42a02a',
name: 'SunOrcl',
pid: '2',
children: null
},
{
id: '9899e04067554df69c67cf5b196e98b7',
name: 'by1',
pid: '2',
children: null
},
{
id: 'd314fbad49d14e05a4279fc4ccb4ce66',
name: 'MT',
pid: '2',
children: null
},
{
id: 'c8cbeff921e547e483596074a9e324fb',
name: 'gw_bzk',
pid: '2',
children: null
},
{
id: '45e29dc086b544678e9125a1c2f0e89b',
name: 'YGH',
pid: '2',
children: null
},
{
id: '5f21d117c256418a801eae9ee27d8cc3',
name: 'CHATESTU',
pid: '2',
children: null
},
{
id: 'e29a448c8c4c4e37a75f64ad87479cfd',
name: 'MT041201',
pid: '2',
children: null
},
{
id: '79802451f0bb4a0f9918d24cbb3df478',
name: 'MT0415',
pid: '2',
children: null
},
{
id: '4066e261f0bd4aab94880080594f2f42',
name: 'LOCS',
pid: '2',
children: null
},
{
id: '63c531c5ec30436bb83c3f153bf4ea04',
name: 'bzk2',
pid: '2',
children: null
},
{
id: '5269f15244b84074b60789a54d839ebe',
name: 'GB',
pid: '2',
children: null
},
{
id: 'f76d9389e35d40e7ba4b9d5604f9821e',
name: 'GW测试',
pid: '2',
children: null
},
{
id: '87c3ccb1d9224972901e1cea2fee88a8',
name: 'orcl202',
pid: '2',
children: null
},
{
id: 'a9cb35c1e9564ac88a88b2aef38aeafb',
name: '测试1',
pid: '2',
children: null
},
{
id: '30b36c6022834b4c8fbba6b1400f7e85',
name: 'TEST_SUB',
pid: '2',
children: null
},
{
id: '4f8f187bc8e046ccb9c0afaa2e30fa6b',
name: 'XP_DRI',
pid: '2',
children: null
},
{
id: '47b79c6e096248e18a51568d763e9ac5',
name: 'ORCLCHA',
pid: '2',
children: null
},
{
id: '27af4fdba1df477295f5978ca6f0704c',
name: 'XP_订阅分发1',
pid: '2',
children: null
},
{
id: '2224cfbd964e444d96acddc404622491',
name: 'XP_订阅分发2',
pid: '2',
children: null
}
]
},
{
id: '10',
name: 'DM',
pid: '-1',
children: [
{
id: '362eede69f654260b891d1a9ac61cc68',
name: '达梦连接',
pid: '10',
children: null
},
{
id: '8331b61efdca4c82a183c69da90d5099',
name: '达梦AAA',
pid: '10',
children: null
},
{
id: '65eb1c3012584d9e865d2f0447fd5eb0',
name: 'zb',
pid: '10',
children: null
},
{
id: '37562043808646709b003badbdeab8e5',
name: 'bzk1',
pid: '10',
children: null
},
{
id: 'b39484a1f6654c6ab5c2bac8763e652e',
name: '达梦GW',
pid: '10',
children: null
},
{
id: '0d905fdf73a94948a91406bc508b607d',
name: 'DM数值类型',
pid: '10',
children: null
},
{
id: '10132ff9686145929a24de9b5c9c6eb4',
name: '测试dm转Oracle',
pid: '10',
children: null
}
]
},
{
id: '12',
name: 'Kingbase8',
pid: '-1',
children: [
{
id: 'c933e63315ee4c64b70a5fa348c83059',
name: 'xp_1111_test1',
pid: '12',
children: null
},
{
id: 'a5b761ecb97a4930a8ecae16219c6fd9',
name: 'xp_add_1',
pid: '12',
children: null
},
{
id: '12c96463ed464a7da6c0696cf272b6e0',
name: 'xp_test_kingbase8_22',
pid: '12',
children: null
},
{
id: '14f306c4ccc94ddfb4b0cafcb79c3982',
name: 'XP_TEST_1',
pid: '12',
children: null
},
{
id: '9a68cbf199534e28a6c8779036977edb',
name: '金仓C',
pid: '12',
children: null
},
{
id: '6097a77761d64e83a3a481fa9b4e000f',
name: '金仓m',
pid: '12',
children: null
},
{
id: '6941881032414bd2858a64efcf36db5e',
name: 'sunKing',
pid: '12',
children: null
},
{
id: '91b67d1b3d9049c597544302f4e0053a',
name: 'qztable',
pid: '12',
children: null
},
{
id: '645aadeb3d5542dfb71801c5600ef857',
name: 'king8',
pid: '12',
children: null
}
]
}
]
}
]
},
beforeDestroy() {},
methods: {
selectTerrEvetn(data) {
console.log(data, '勾选了')
}
}
}
</script>
<style scoped></style>