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137 lines
5.2 KiB
137 lines
5.2 KiB
<template>
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<picker mode="multiSelector"
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:value="multiIndex"
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:range="multiArray"
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@change="handleValueChange"
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@columnchange="handleColumnChange">
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<slot></slot>
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</picker>
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</template>
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<script>
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const CHINA_REGIONS = require('./regions.json')
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export default {
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props:{
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defaultRegions:{
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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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defaultRegionCode:{
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type:String
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},
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defaultRegion:[String,Array]
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},
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data() {
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return {
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cityArr:CHINA_REGIONS[0].childs,
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districtArr:CHINA_REGIONS[0].childs[0].childs,
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multiIndex: [0, 0, 0],
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isInitMultiArray:true,
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}
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},
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watch:{
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defaultRegion:{
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handler(region,oldRegion){
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if(Array.isArray(region)){
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// 避免传的是字面量的时候重复触发
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oldRegion = oldRegion || []
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if(region.join('')!==oldRegion.join('')){
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this.handleDefaultRegion(region)
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}
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}else if(region&®ion.length == 6){
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this.handleDefaultRegion(region)
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}else{
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console.warn('defaultRegion非有效格式')
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}
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},
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immediate:true,
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}
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},
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computed:{
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multiArray(){
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return this.pickedArr.map(arr=>arr.map(item=>item.name))
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},
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pickedArr(){
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// 进行初始化
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if(this.isInitMultiArray){
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return [
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CHINA_REGIONS,
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CHINA_REGIONS[0].childs,
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CHINA_REGIONS[0].childs[0].childs
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]
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}
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return [CHINA_REGIONS,this.cityArr,this.districtArr];
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}
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},
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methods: {
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handleColumnChange(e){
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// console.log(e);
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this.isInitMultiArray = false;
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const that = this;
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let col = e.detail.column;
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let row = e.detail.value;
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that.multiIndex[col] = row;
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try{
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switch(col){
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case 0:
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if(CHINA_REGIONS[that.multiIndex[0]].childs.length==0){
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that.cityArr = that.districtArr = [CHINA_REGIONS[that.multiIndex[0]]]
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break;
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}
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that.cityArr = CHINA_REGIONS[that.multiIndex[0]].childs
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that.districtArr = CHINA_REGIONS[that.multiIndex[0]].childs[that.multiIndex[1]].childs
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break;
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case 1:
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that.districtArr = CHINA_REGIONS[that.multiIndex[0]].childs[that.multiIndex[1]].childs
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break;
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case 2:
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break;
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}
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}catch(e){
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// console.log(e);
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that.districtArr = CHINA_REGIONS[that.multiIndex[0]].childs[0].childs
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}
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},
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handleValueChange(e){
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// 结构赋值
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let [index0,index1,index2] = e.detail.value;
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let [arr0,arr1,arr2] = this.pickedArr;
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let address = [arr0[index0],arr1[index1],arr2[index2]];
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// console.log(address);
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this.$emit('getRegion',address)
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},
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handleDefaultRegion(region){
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const isCode = !Array.isArray(region)
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this.isInitMultiArray = false;
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let children = CHINA_REGIONS
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for(let i=0;i<3;i++){
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for(let j=0;j<children.length;j++){
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let condition = isCode?children[j].code==region.slice(0,(i+1)*2):children[j].name.includes(region[i]);
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if(condition){
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// 匹配成功进行赋值
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// console.log(i,j,children.length-1);
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children = children[j].childs;
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if(i==0){
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this.cityArr = children
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}else if(i==1){
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this.districtArr = children
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}
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this.$set(this.multiIndex,i,j)
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// console.log(this.multiIndex);
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break;
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}else{
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// 首次匹配失败就用默认的初始化
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// console.log(i,j,children.length-1);
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if(i==0 && j==(children.length-1)){
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this.isInitMultiArray = true;
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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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}
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</script>
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