161 lines
3.8 KiB
Vue
161 lines
3.8 KiB
Vue
<template>
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<el-select
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ref="treeSelect"
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:value="valueTitle"
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:clearable="clearable"
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filterable
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:placeholder="placeholder"
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@clear="clearHandle"
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:filter-method="filterMethod"
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>
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<el-option :value="valueTitle" :label="valueTitle" class="options">
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</el-option>
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<el-tree id="tree-option"
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ref="selectTree"
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:accordion="accordion"
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:data="options"
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:props="props"
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empty-text="未找到结果"
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:node-key="props.value"
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highlight-current
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default-expand-all
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:expand-on-click-node="false"
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:default-expanded-keys="defaultExpandedKey"
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:filter-node-method="filterNode"
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@node-click="handleNodeClick">
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</el-tree>
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</el-select>
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</template>
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<script>
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export default {
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name: "TreeSelect",
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props:{
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/* 配置项 */
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props:{
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type: Object,
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default:()=>{
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return {
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value:'id', // ID字段名
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label: 'name', // 显示名称
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children: 'children' // 子级字段名
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}
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}
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},
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/* 选项列表数据(树形结构的对象数组) */
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options:{
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type: Array,
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default: ()=>{ return [] }
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},
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/* 初始值 */
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value:{
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type: String,
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default: ''
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},
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/* 可清空选项 */
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clearable:{
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type:Boolean,
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default:()=>{ return true }
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},
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/* 自动收起 */
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accordion:{
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type:Boolean,
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default:()=>{ return false }
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},
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placeholder:{
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type:String,
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default:()=>{return "检索关键字"}
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}
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},
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data() {
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return {
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valueId:this.value, // 初始值
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valueTitle:'',
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defaultExpandedKey:[]
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}
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},
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mounted(){
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this.initHandle()
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},
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methods: {
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// 初始化值
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initHandle(){
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if(this.valueId){
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this.$nextTick(() => {
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// 设置默认选中
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this.$refs.selectTree.setCurrentKey(this.valueId)
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const that = this
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setTimeout(function (){
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// 初始化显示
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that.valueTitle = that.$refs.selectTree.getNode(that.valueId).data[that.props.label]
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}, 100)
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// 设置默认展开
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this.defaultExpandedKey = [this.valueId]
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})
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} else {
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this.valueTitle = ''
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}
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},
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// 切换选项
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handleNodeClick(node){
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this.valueTitle = node[this.props.label]
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this.valueId = node[this.props.value]
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this.defaultExpandedKey = []
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this.$refs.treeSelect.blur()
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this.$emit('input', this.valueId)
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},
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// 清除选中
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clearHandle(){
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this.valueTitle = ''
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this.valueId = null
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this.defaultExpandedKey = []
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this.clearSelected()
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this.$emit('input', '')
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},
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/* 清空选中样式 */
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clearSelected(){
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let allNode = document.querySelectorAll('#tree-option .el-tree-node')
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allNode.forEach((element)=>element.classList.remove('is-current'))
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},
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filterNode(value, data) {
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if (!value) return true;
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return data.name.indexOf(value) !== -1;
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},
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filterMethod(query){
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this.$refs.selectTree.filter(query);
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}
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},
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watch: {
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value(){
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this.valueId = this.value
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this.initHandle()
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}
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},
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};
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</script>
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<style scoped>
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.el-scrollbar .el-scrollbar__view .el-select-dropdown__item{
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display: none;
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}
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ul li >>>.el-tree .el-tree-node__content{
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height:auto;
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padding: 0 20px;
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}
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.el-tree-node__label{
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font-weight: normal;
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}
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.el-tree >>>.is-current .el-tree-node__label{
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color: #409EFF;
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font-weight: 700;
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}
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.el-tree >>>.is-current .el-tree-node__children .el-tree-node__label{
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color:#606266;
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font-weight: normal;
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}
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.selectInput{
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padding: 0 5px;
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box-sizing: border-box;
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}
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</style>
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