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：
一.子组件
<template>
<div>
<el-select v-model="mineStatus" ref="searchSelect" :placeholder="placeholder" :multiple="!Single" :size="size"
:disabled="disabled" collapse-tags @change="selectChange" :loading="loading">
<div style="padding: 10px;">
<el-input v-if="filterable" placeholder="请输入搜索内容" v-model="singleSearch" :size="size" clearable></el-input>
</div>
<el-option :value="mineStatusValue" v-on:click="doThis($event)" style="position: relative;width: 100%;" :style="{'height':height+'px','overflow-y':overflow}">
<div style="height: 100%;" v-on:click="doThis($event)">
<div style="padding-right: 10px;" v-on:click="doThis($event)">
<el-tree v-if="treeData.length" :data="treeData" :show-checkbox="!Single" ref="tree" 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">
</el-tree>
</div>
<div v-if="!treeData.length" style="width: 100%;height: 100%;background-color: #FFFFFF;text-align: center;">
暂无数据
</div>
</div>
<div id="load" v-show="load" style="position: absolute;left: 0;top: 0;height: 200px;width: 100%;"></div>
</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) => {
let 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 () {
let 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.$refs.searchSelect.blur()
event.stopPropagation()
},
// select框值改变时候触发的事件
selectChange (e) {
if (this.Single || !this.treeData.length) {
return false
}
let arrNew = []
let dataLength = this.mineStatusValue.length
let eleng = e.length
for (let i = 0; i < dataLength; i++) {
for (let j = 0; j < eleng; j++) {
if (e[j] === this.mineStatusValue[i][this.defaultProps.label]) {
arrNew.push(this.mineStatusValue[i])
break
}
}
}
this.$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
let defaultData = []
// 根据树id 递归树 筛选出对应的数据
if (this.Single) { // 单选
let 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) => {
let 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
let arrLabel = []
let 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.$refs.tree.setCheckedNodes([])
}
},
// 搜索 监听
search () {
this.loading = true
let val = this.$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
}
let arrLabel = []
let 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.$loading({
lock: true,
text: 'Loading',
spinner: 'el-icon-loading',
background: 'rgba(255, 255, 255, 0.5)',
target: document.getElementById('load')
})
};
let res = this.$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）
let arrLabel = []
let 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" @selectTerrEvent="selectTerrEvetn"
:defaultExpandAll="true" :defaultProps="defaultProps">
</select-tree>
</el-form-item>
</el-form>
</div>
</template>
<script>
import SelectTree from '@/components/V2'
export default {
components: {
SelectTree
},
data() {
let _this = this
return {
pageParams:{},
defaultProps: {
children: "children",
label: "name"
},
getData: []
}
},
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() {
},
computed: {
},
methods: {
selectTerrEvetn(data) {
console.log(data, '勾选了')
}
},
watch: {
}
}
</script>
<style scoped>
</style>
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