328 lines
8.7 KiB
Java
328 lines
8.7 KiB
Java
<template>
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<div>
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<a-tree-select
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v-if="isAsync"
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allowClear
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tree-node-filter-prop="title"
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:getPopupContainer="(node) => node.parentNode"
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style="width: 100%"
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:disabled="disabled"
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:dropdownStyle="{ maxHeight: '400px', overflow: 'auto' }"
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:placeholder="placeholder"
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:loadData="asyncLoadTreeData"
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:value="treeValue"
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:treeData="treeData"
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:multiple="multiple"
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:show-search="!multiple"
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v-bind="_attrs"
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v-on="$listeners"
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@change="onChange">
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</a-tree-select>
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<a-tree-select
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v-if="!isAsync"
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allowClear
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tree-node-filter-prop="title"
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:getPopupContainer="(node) => node.parentNode"
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style="width: 100%"
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:disabled="disabled"
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:dropdownStyle="{ maxHeight: '400px', overflow: 'auto' }"
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:placeholder="placeholder"
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:value="treeValue"
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:treeData="treeData"
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:multiple="multiple"
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:show-search="!multiple"
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v-bind="_attrs"
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v-on="$listeners"
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@change="onChange">
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</a-tree-select>
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</div>
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</template>
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<script>
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/*
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* 异步树加载组件 通过传入表名 显示字段 存储字段 加载一个树控件
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* <j-tree-select dict="aa_tree_test,aad,id" pid-field="pid" ></j-tree-select>
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* */
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import { getAction } from '@/api/manage'
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export default {
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name: 'JTreeSelect',
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props: {
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isAsync:{ // 是否采用异步方式初始化树
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type:Boolean,
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required:false,
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default:true
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},
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value:{
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// type: String,
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required: false
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},
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placeholder:{
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type: String,
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default: '请选择',
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required: false
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},
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dict:{
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type: String,
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default: '',
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required: false
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},
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pidField:{
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type: String,
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default: 'pid',
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required: false
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},
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pidValue:{
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type: String,
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default: '',
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required: false
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},
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disabled:{
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type:Boolean,
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default:false,
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required:false
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},
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hasChildField:{
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type: String,
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default: '',
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required: false
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},
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condition:{
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type:String,
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default:'',
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required:false
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},
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// 是否支持多选
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multiple: {
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type: Boolean,
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default: false,
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},
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loadTriggleChange:{
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type: Boolean,
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default: false,
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required:false
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}
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},
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data () {
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return {
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treeValue: null, // 选中的数据
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treeData:[],// 渲染树的数组
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url:"/sys/dict/loadTreeData",
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view:'/sys/dict/loadDictItem/',
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tableName:"",
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text:"",
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code:"",
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}
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},
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watch: {
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value () {
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this.loadItemByCode()
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},
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dict(){
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this.initDictInfo()
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this.loadRoot()
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}
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},
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computed:{
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_attrs() {
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let attrs
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attrs = { ...this.$attrs }
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return attrs
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}
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},
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created(){
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this.validateProp().then(()=>{
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this.initDictInfo()
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this.loadRoot()
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this.loadItemByCode()
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})
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},
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mounted(){
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window.that = this
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},
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methods: {
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loadItemByCode(){
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if( !this.value || this.value == "0" ){
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this.treeValue = null
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}else{
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getAction(`${this.view}${this.dict}`,{key:this.value}).then(res=>{
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if(res.success){
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let values = this.value.split(',')
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this.treeValue = values // v-model接收的是string || string[]
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this.onLoadTriggleChange(res.result[0]);
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}
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})
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}
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},
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onLoadTriggleChange(text){
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//只有单选才会触发
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if(!this.multiple && this.loadTriggleChange){
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this.$emit('change', this.value,text)
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}
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},
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initDictInfo(){ //取出父组件传过来的code，text，tableName
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let arr = this.dict.split(",")
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this.tableName = arr[0]
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this.text = arr[1]
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this.code = arr[2]
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},
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//异步加载树节点
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asyncLoadTreeData (treeNode) {
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return new Promise((resolve) => {
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if (treeNode.$vnode.children) {
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resolve()
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return
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}
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let pid = treeNode.$vnode.key
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let param = {
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pid:pid,
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tableName:this.tableName,
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text:this.text,
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code:this.code,
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pidField:this.pidField,
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hasChildField:this.hasChildField,
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condition:this.condition
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}
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getAction(this.url,param).then(res=>{
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if(res.success){
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for(let i of res.result){
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i.value = i.key
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if(i.leaf==false){
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i.isLeaf=false
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}else if(i.leaf==true){
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i.isLeaf=true
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}
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}
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this.addChildren(pid,res.result,this.treeData)
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this.treeData = [...this.treeData]
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}
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resolve()
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})
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})
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},
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addChildren(pid,children,treeArray){
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if(treeArray && treeArray.length>0){
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for(let item of treeArray){
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if(item.key == pid){ //找到当前元素所在的父节点
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if(!children || children.length==0){
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item.isLeaf=true
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}else{
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item.children = children // 搜索出来的children添加到原树子children
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}
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break
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}else{
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this.addChildren(pid,children,item.children)
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}
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}
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}
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},
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/**
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* 初始化树
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* isAsync：true===异步获取 false===同步获取数据 默认异步*/
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loadRoot(){
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if (this.isAsync){
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let param = {
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pid:this.pidValue,
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tableName:this.tableName,
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text:this.text,
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code:this.code,
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pidField:this.pidField,
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hasChildField:this.hasChildField,
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condition:this.condition
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}
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getAction(this.url,param).then(res=>{
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if(res.success && res.result){
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for(let i of res.result){
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i.value = i.key
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if(i.leaf==false){
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i.isLeaf=false
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}else if(i.leaf==true){
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i.isLeaf=true
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}
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}
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this.treeData = [...res.result]
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}else{
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console.log("数根节点查询结果-else",res)
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}
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})
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}else{
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//同步
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let param = {
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code:this.code,
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pidField:this.pidField,
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tableName:this.tableName,
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text:this.text
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}
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getAction('/sys/dict/queryAllTreeData',param).then((res)=>{
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if (res.success){
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this.treeData = deepFor(res.result)
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}
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})
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}
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},
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onChange(value){
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if(!value){
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/*
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* 使用$listeners向上暴露事件---和$emit一起使用出现的问题：change事件会执行两遍
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* 解决办法：改变选中时提交的事件名*/
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this.$emit('select-change', '');
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this.treeValue = null
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} else if (value instanceof Array) {
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//多选
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this.$emit('select-change', value.join(',').toString()) //修改第一次选中时，选中为空的情况
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this.treeValue = value
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} else {
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//单选
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this.$emit('select-change', value)
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this.treeValue = value
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}
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},
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getCurrTreeData(){
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return this.treeData
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},
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validateProp(){
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let myCondition = this.condition
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return new Promise((resolve,reject)=>{
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if(!myCondition){
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resolve();
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}else{
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try {
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let test=JSON.parse(myCondition);
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if(typeof test == 'object' && test){
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resolve()
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}else{
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this.$message.error("组件JTreeSelect-condition传值有误，需要一个json字符串!")
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reject()
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}
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} catch(e) {
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this.$message.error("组件JTreeSelect-condition传值有误，需要一个json字符串!")
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reject()
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}
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}
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})
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}
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},
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//2.2新增 在组件内定义 指定父组件调用时候的传值属性和事件类型
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model: {
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prop: 'value',
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event: 'select-change'
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}
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}
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//递归整个树，判断是否是叶子节点----同步获取数据时用到
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function deepFor(source){
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for(let i of source){
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i.value = i.key
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if(i.leaf==false){
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i.isLeaf=false
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}else if(i.leaf==true){
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i.isLeaf=true
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}
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if (i.children && i.children.length > 0){
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deepFor(i.children)
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}
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}
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return source
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}
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</script>
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