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@@ -1,142 +1,176 @@
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<template>
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<template>
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- <el-select :size="size" :value="valueTitle" :clearable="clearable" @clear="clearHandle">
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- <el-input
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- :size="size"
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- class="selectInput"
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- :placeholder="placeholder"
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- v-model="filterText">
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- </el-input>
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+ <el-select ref="treeSelect" :size="size" :value="valueTitle" :clearable="clearable" @clear="clearHandle" :style="{width:width}">
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+ <el-input :size="size" class="selectInput" :placeholder="placeholder" v-model="filterText"></el-input>
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<el-option :value="valueTitle" :label="valueTitle" class="options">
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<el-option :value="valueTitle" :label="valueTitle" class="options">
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- <el-tree id="tree-option"
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+ <el-tree
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+ id="tree-option"
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ref="selectTree"
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ref="selectTree"
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:accordion="accordion"
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:accordion="accordion"
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:data="optionData"
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:data="optionData"
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:props="props"
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:props="props"
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- :node-key="props.value"
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+ :node-key="props.value"
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:default-expanded-keys="defaultExpandedKey"
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:default-expanded-keys="defaultExpandedKey"
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:filter-node-method="filterNode"
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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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+ @node-click="handleNodeClick"
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+ ></el-tree>
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</el-option>
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</el-option>
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</el-select>
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</el-select>
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</template>
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</template>
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<script>
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<script>
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export default {
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export default {
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name: "el-tree-select",
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name: "el-tree-select",
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- props:{
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+ props: {
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/* 配置项 */
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/* 配置项 */
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- props:{
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+ props: {
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type: Object,
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type: Object,
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- default:()=>{
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+ default: () => {
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return {
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return {
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- value:'id', // ID字段名
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- label: 'title', // 显示名称
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- children: 'children' // 子级字段名
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- }
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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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},
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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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/* 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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+ options: {
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+ type: Array,
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+ default: () => {
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+ return [];
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+ }
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},
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},
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/* 初始值 */
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/* 初始值 */
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- value:{
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+ value: {
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type: String,
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type: String,
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- default: ()=>{ return null }
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+ default: () => {
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+ return null;
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+ }
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},
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},
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/* 初始值 */
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/* 初始值 */
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- size:{
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+ size: {
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+ type: String,
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+ default: () => {
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+ return "small";
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+ }
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+ },
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+ width: {
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type: String,
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type: String,
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- default: ()=>{ return 'small' }
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+ default: () => {
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+ return "200px";
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+ }
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},
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},
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/* 可清空选项 */
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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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+ clearable: {
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+ type: Boolean,
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+ default: () => {
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+ return true;
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+ }
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},
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},
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/* 自动收起 */
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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 true }
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+ accordion: {
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+ type: Boolean,
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+ default: () => {
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+ return true;
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+ }
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},
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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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+ placeholder: {
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+ type: String,
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+ default: () => {
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+ return "检索关键字";
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+ }
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}
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}
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},
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},
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computed: {
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computed: {
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/* 转树形数据 */
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/* 转树形数据 */
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optionData() {
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optionData() {
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//第一个节点为根节点
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//第一个节点为根节点
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- if(this.options.length>0){
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+ if (this.options.length > 0) {
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var rootId = this.options[0].id;
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var rootId = this.options[0].id;
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let cloneData = JSON.parse(JSON.stringify(this.options)); // 对源数据深度克隆
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let cloneData = JSON.parse(JSON.stringify(this.options)); // 对源数据深度克隆
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return cloneData.filter(father => {
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return cloneData.filter(father => {
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// 循环所有项,并添加children属性
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// 循环所有项,并添加children属性
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- let branchArr = cloneData.filter(child => father.id == child.parentId); // 返回每一项的子级数组
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+ let branchArr = cloneData.filter(
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+ child => father.id == child.parentId
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+ ); // 返回每一项的子级数组
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branchArr.length > 0 ? (father.children = branchArr) : ""; //给父级添加一个children属性,并赋值
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branchArr.length > 0 ? (father.children = branchArr) : ""; //给父级添加一个children属性,并赋值
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return father.id == rootId || father.parentId == null; //返回第一层
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return father.id == rootId || father.parentId == null; //返回第一层
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});
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});
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- }
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- else{
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+ } else {
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return [];
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return [];
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}
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}
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}
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}
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},
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},
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data() {
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data() {
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return {
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return {
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- filterText: '',
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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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+ filterText: "",
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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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},
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- mounted(){
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- this.initHandle()
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+ mounted() {
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+ this.initHandle();
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},
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},
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methods: {
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methods: {
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// 初始化值
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// 初始化值
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- initHandle(){
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+ initHandle() {
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+ console.log("options.length=" + this.options.length);
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+ console.log(this.value);
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+
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+ var arr = this.options.filter(item=>item.id == this.value);
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+
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+ if(arr.length>0){
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+ this.valueTitle = arr[0][this.props.label];
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+ }
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+
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if(this.valueId){
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if(this.valueId){
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- this.valueTitle = this.$refs.selectTree.getNode(this.valueId).data[this.props.label] // 初始化显示
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- this.$refs.selectTree.setCurrentKey(this.valueId) // 设置默认选中
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- this.defaultExpandedKey = [this.valueId] // 设置默认展开
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- }
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- this.initScroll()
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+ this.$refs.selectTree.setCurrentKey(this.valueId); // 设置默认选中
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+ this.defaultExpandedKey = [this.valueId]; // 设置默认展开
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+ }
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+
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+ this.initScroll();
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},
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},
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// 初始化滚动条
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// 初始化滚动条
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- initScroll(){
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- this.$nextTick(()=>{
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- let scrollWrap = document.querySelectorAll('.el-scrollbar .el-select-dropdown__wrap')[0]
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- let scrollBar = document.querySelectorAll('.el-scrollbar .el-scrollbar__bar')
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- scrollWrap.style.cssText = 'margin: 0px; max-height: none; overflow: hidden;'
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- scrollBar.forEach(ele => ele.style.width = 0)
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- })
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+ initScroll() {
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+ this.$nextTick(() => {
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+ let scrollWrap = document.querySelectorAll(
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+ ".el-scrollbar .el-select-dropdown__wrap"
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+ )[0];
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+ let scrollBar = document.querySelectorAll(
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+ ".el-scrollbar .el-scrollbar__bar"
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+ );
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+ scrollWrap.style.cssText =
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+ "margin: 0px; max-height: none; overflow: hidden;";
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+ scrollBar.forEach(ele => (ele.style.width = 0));
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+ });
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},
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},
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// 切换选项
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// 切换选项
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- handleNodeClick(node){
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- this.valueTitle = node[this.props.label]
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- this.valueId = node[this.props.value]
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+ handleNodeClick(node) {
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+ this.valueTitle = node[this.props.label];
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+ this.valueId = node[this.props.value];
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//this.node = node;
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//this.node = node;
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- this.$emit('getValue',this.valueId)
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+
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+ this.$emit("input", this.valueId);
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+
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+ this.$refs.treeSelect.blur();
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+
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//this.$emit('getValue',node)
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//this.$emit('getValue',node)
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- this.defaultExpandedKey = []
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+ this.defaultExpandedKey = [];
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+
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+
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},
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},
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// 清除选中
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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.$emit('getValue',null)
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-
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+ clearHandle() {
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+ this.valueTitle = "";
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+ this.valueId = null;
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+ this.defaultExpandedKey = [];
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+ this.clearSelected();
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+ this.$emit("input", null);
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},
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},
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/* 清空选中样式 */
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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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+ 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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},
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filterNode(value, data) {
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filterNode(value, data) {
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if (!value) return true;
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if (!value) return true;
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@@ -144,44 +178,57 @@ export default {
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}
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}
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},
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},
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watch: {
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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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+ value(newVal,oldVal) {
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+ this.valueId = newVal;
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+
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+ if(newVal=='') {
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+ this.clearHandle();
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+ }
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+
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+ this.initHandle();
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+ },
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+ options(newVal,oldVal) {
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+ //如果options读取慢,则
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+ if(oldVal==null || oldVal.length==0){
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+ setTimeout(()=>{
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+ this.initHandle();
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+ },100);
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+ }
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},
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},
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filterText(val) {
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filterText(val) {
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this.$refs.selectTree.filter(val);
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this.$refs.selectTree.filter(val);
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}
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}
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- },
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+ }
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};
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};
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</script>
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</script>
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<style>
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<style>
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- .el-scrollbar .el-scrollbar__view .el-select-dropdown__item{
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- height: auto;
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- max-height: 274px;
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- padding: 0;
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- overflow: hidden;
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- overflow-y: auto;
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- }
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- .el-select-dropdown__item.selected{
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- font-weight: normal;
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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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+.el-scrollbar .el-scrollbar__view .el-select-dropdown__item {
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+ height: auto;
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+ max-height: 274px;
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+ padding: 0;
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+ overflow: hidden;
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+ overflow-y: auto;
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+}
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+.el-select-dropdown__item.selected {
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+ font-weight: normal;
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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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</style>
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