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| <template>
| <view class="w-picker-view">
| <picker-view class="d-picker-view" :indicator-style="itemHeight" :value="pickVal" @change="handlerChange">
| <picker-view-column v-for="(group,gIndex) in range" :key="gIndex">
| <view class="w-picker-item" v-for="(item,index) in group" :key="index">{{item[nodeKey]}}</view>
| </picker-view-column>
| </picker-view>
| </view>
| </template>
|
| <script>
| export default {
| data() {
| return {
| pickVal:[],
| range:[],
| checkObj:{}
| };
| },
| props:{
| itemHeight:{
| type:String,
| default:"44px"
| },
| value:{
| type:[Array,String],
| default:""
| },
| defaultType:{
| type:String,
| default:"label"
| },
| options:{
| type:Array,
| default(){
| return []
| }
| },
| defaultProps:{
| type:Object,
| default(){
| return{
| lable:"label",
| value:"value",
| children:"children"
| }
| }
| },
| level:{
| //多级联动层级，表示几级联动
| type:[Number,String],
| default:2
| }
| },
| computed:{
| nodeKey(){
| return this.defaultProps.label;
| },
| nodeVal(){
| return this.defaultProps.value;
| },
| nodeChild(){
| return this.defaultProps.children;
| }
| },
| watch:{
| value(val){
| if(this.options.length!=0){
| this.initData();
| }
| },
| options(val){
| this.initData();
| }
| },
| created() {
| if(this.options.length!=0){
| this.initData();
| }
| },
| methods:{
| getData(){
| //用来处理初始化数据
| let options=this.options;
| let col1={},col2={},col3={},col4={};
| let arr1=options,arr2=[],arr3=[],arr4=[];
| let col1Index=0,col2Index=0,col3Index=0,col4Index=0;
| let a1="",a2="",a3="",a4="";
| let dVal=[],obj={};
| let value=this.value;
| let data=[];
| a1=value[0];
| a2=value[1];
| if(this.level>2){
| a3=value[2];
| }
| if(this.level>3){
| a4=value[3];
| };
| /*第1列*/
| col1Index=arr1.findIndex((v)=>{
| return v[this.defaultType]==a1
| });
| col1Index=value?(col1Index!=-1?col1Index:0):0;
| col1=arr1[col1Index];
|
| /*第2列*/
| arr2=arr1[col1Index][this.nodeChild];
| col2Index=arr2.findIndex((v)=>{
| return v[this.defaultType]==a2
| });
| col2Index=value?(col2Index!=-1?col2Index:0):0;
| col2=arr2[col2Index];
|
| /*第3列*/
| if(this.level>2){
| arr3=arr2[col2Index][this.nodeChild];
| col3Index=arr3.findIndex((v)=>{
| return v[this.defaultType]==a3;
| });
| col3Index=value?(col3Index!=-1?col3Index:0):0;
| col3=arr3[col3Index];
| };
|
|
| /*第4列*/
| if(this.level>3){
| arr4=arr3[col4Index][this.nodeChild];
| col4Index=arr4.findIndex((v)=>{
| return v[this.defaultType]==a4;
| });
| col4Index=value?(col4Index!=-1?col4Index:0):0;
| col4=arr4[col4Index];
| };
| switch(this.level*1){
| case 2:
| dVal=[col1Index,col2Index];
| obj={
| col1,
| col2
| }
| data=[arr1,arr2];
| break;
| case 3:
| dVal=[col1Index,col2Index,col3Index];
| obj={
| col1,
| col2,
| col3
| }
| data=[arr1,arr2,arr3];
| break;
| case 4:
| dVal=[col1Index,col2Index,col3Index,col4Index];
| obj={
| col1,
| col2,
| col3,
| col4
| }
| data=[arr1,arr2,arr3,arr4];
| break
| }
| return {
| data,
| dVal,
| obj
| }
| },
| initData(){
| let dataData=this.getData();
| let data=dataData.data;
| let arr1=data[0];
| let arr2=data[1];
| let arr3=data[2]||[];
| let arr4=data[3]||[];
| let obj=dataData.obj;
| let col1=obj.col1,col2=obj.col2,col3=obj.col3||{},col4=obj.col4||{};
| let result="",value=[];
| let range=[];
| switch(this.level){
| case 2:
| value=[col1[this.nodeVal],col2[this.nodeVal]];
| result=`${col1[this.nodeKey]+col2[this.nodeKey]}`;
| range=[arr1,arr2];
| break;
| case 3:
| value=[col1[this.nodeVal],col2[this.nodeVal],col3[this.nodeVal]];
| result=`${col1[this.nodeKey]+col2[this.nodeKey]+col3[this.nodeKey]}`;
| range=[arr1,arr2,arr3];
| break;
| case 4:
| value=[col1[this.nodeVal],col2[this.nodeVal],col3[this.nodeVal],col4[this.nodeVal]];
| result=`${col1[this.nodeKey]+col2[this.nodeKey]+col3[this.nodeKey]+col4[this.nodeKey]}`;
| range=[arr1,arr2,arr3,arr4];
| break;
| }
| this.range=range;
| this.checkObj=obj;
| this.$nextTick(()=>{
| this.pickVal=dataData.dVal;
| });
| this.$emit("change",{
| result:result,
| value:value,
| obj:obj
| })
| },
| handlerChange(e){
| let arr=[...e.detail.value];
| let col1Index=arr[0],col2Index=arr[1],col3Index=arr[2]||0,col4Index=arr[3]||0;
| let arr1=[],arr2=[],arr3=[],arr4=[];
| let col1,col2,col3,col4,obj={};
| let result="",value=[];
| arr1=this.options;
| arr2=(arr1[col1Index]&&arr1[col1Index][this.nodeChild])||arr1[arr1.length-1][this.nodeChild]||[];
| col1=arr1[col1Index]||arr1[arr1.length-1]||{};
| col2=arr2[col2Index]||arr2[arr2.length-1]||{};
| if(this.level>2){
| arr3=(arr2[col2Index]&&arr2[col2Index][this.nodeChild])||arr2[arr2.length-1][this.nodeChild];
| col3=arr3[col3Index]||arr3[arr3.length-1]||{};
| }
| if(this.level>3){
| arr4=(arr3[col3Index]&&arr3[col3Index][this.nodeChild])||arr3[arr3.length-1][this.nodeChild]||[];
| col4=arr4[col4Index]||arr4[arr4.length-1]||{};
| }
| switch(this.level){
| case 2:
| obj={
| col1,
| col2
| }
| this.range=[arr1,arr2];
| result=`${(col1[this.nodeKey]||'')+(col2[this.nodeKey]||'')}`;
| value=[col1[this.nodeVal]||'',col2[this.nodeVal]||''];
| break;
| case 3:
| obj={
| col1,
| col2,
| col3
| }
| this.range=[arr1,arr2,arr3];
| result=`${(col1[this.nodeKey]||'')+(col2[this.nodeKey]||'')+(col3[this.nodeKey]||'')}`;
| value=[col1[this.nodeVal]||'',col2[this.nodeVal]||'',col3[this.nodeVal]||''];
| break;
| case 4:
| obj={
| col1,
| col2,
| col3,
| col4
| }
| this.range=[arr1,arr2,arr3,arr4];
| result=`${(col1[this.nodeKey]||'')+(col2[this.nodeKey]||'')+(col3[this.nodeKey]||'')+(col4[this.nodeKey]||'')}`;
| value=[col1[this.nodeVal]||'',col2[this.nodeVal]||'',col3[this.nodeVal]||'',col4[this.nodeVal]||''];
| break;
| }
| this.checkObj=obj;
| this.pickVal=arr;
| this.$emit("change",{
| result:result,
| value:value,
| obj:obj
| })
| }
| }
| }
| </script>
|
| <style lang="scss">
| @import "./w-picker.css";
| </style>
|
|
