引入级联选择插件w-picker
sfmind
4 years ago
parent
8d08d5939f
commit
83bc6fac65
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<template>
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<view class="w-picker-view">
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<picker-view class="d-picker-view" :indicator-style="itemHeight" :value="pickVal" @change="handlerChange">
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.provinces" :key="index">{{item.label}}</view>
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</picker-view-column>
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.citys" :key="index">{{item.label}}</view>
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</picker-view-column>
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<picker-view-column v-if="!hideArea">
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<view class="w-picker-item" v-for="(item,index) in range.areas" :key="index">{{item.label}}</view>
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</picker-view-column>
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</picker-view>
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</view>
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</template>
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<script>
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import areaData from "./areadata/areadata.js"
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export default {
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data() {
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return {
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pickVal:[],
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range:{
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provinces:[],
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citys:[],
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areas:[]
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},
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checkObj:{}
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};
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},
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props:{
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itemHeight:{
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type:String,
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default:"44px"
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},
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value:{
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type:[Array,String],
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default:""
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},
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defaultType:{
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type:String,
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default:"label"
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},
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hideArea:{
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type:Boolean,
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default:false
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}
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},
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watch:{
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value(val){
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this.initData();
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}
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},
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created() {
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this.initData();
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},
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methods:{
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getData(){
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//用来处理初始化数据
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let provinces=areaData;
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let dVal=[];
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let value=this.value;
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let a1=value[0];//默认值省
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let a2=value[1];//默认值市
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let a3=value[2];//默认值区、县
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let province,city,area;
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let provinceIndex=provinces.findIndex((v)=>{
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return v[this.defaultType]==a1
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});
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provinceIndex=value?(provinceIndex!=-1?provinceIndex:0):0;
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let citys=provinces[provinceIndex].children;
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let cityIndex=citys.findIndex((v)=>{
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return v[this.defaultType]==a2
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});
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cityIndex=value?(cityIndex!=-1?cityIndex:0):0;
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let areas=citys[cityIndex].children;
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let areaIndex=areas.findIndex((v)=>{
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return v[this.defaultType]==a3;
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});
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areaIndex=value?(areaIndex!=-1?areaIndex:0):0;
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dVal=this.hideArea?[provinceIndex,cityIndex]:[provinceIndex,cityIndex,areaIndex];
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province=provinces[provinceIndex];
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city=citys[cityIndex];
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area=areas[areaIndex];
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let obj=this.hideArea?{
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province,
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city
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}:{
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province,
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city,
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area
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}
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return this.hideArea?{
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provinces,
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citys,
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dVal,
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obj
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}:{
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provinces,
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citys,
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areas,
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dVal,
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obj
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}
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},
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initData(){
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let dataData=this.getData();
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let provinces=dataData.provinces;
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let citys=dataData.citys;
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let areas=this.hideArea?[]:dataData.areas;
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let obj=dataData.obj;
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let province=obj.province,city=obj.city,area=this.hideArea?{}:obj.area;
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let value=this.hideArea?[province.value,city.value]:[province.value,city.value,area.value];
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let result=this.hideArea?`${province.label+city.label}`:`${province.label+city.label+area.label}`;
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this.range=this.hideArea?{
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provinces,
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citys,
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}:{
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provinces,
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citys,
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areas
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};
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this.checkObj=obj;
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this.$nextTick(()=>{
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this.pickVal=dataData.dVal;
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});
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this.$emit("change",{
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result:result,
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value:value,
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obj:obj
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})
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},
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handlerChange(e){
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let arr=[...e.detail.value];
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let provinceIndex=arr[0],cityIndex=arr[1],areaIndex=this.hideArea?0:arr[2];
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let provinces=areaData;
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let citys=(provinces[provinceIndex]&&provinces[provinceIndex].children)||provinces[provinces.length-1].children||[];
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let areas=this.hideArea?[]:((citys[cityIndex]&&citys[cityIndex].children)||citys[citys.length-1].children||[]);
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let province=provinces[provinceIndex]||provinces[provinces.length-1],
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city=citys[cityIndex]||[citys.length-1],
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area=this.hideArea?{}:(areas[areaIndex]||[areas.length-1]);
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let obj=this.hideArea?{
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province,
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city
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}:{
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province,
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city,
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area
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}
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if(this.checkObj.province.label!=province.label){
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//当省更新的时候需要刷新市、区县的数据;
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this.range.citys=citys;
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if(!this.hideArea){
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this.range.areas=areas;
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}
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}
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if(this.checkObj.city.label!=city.label){
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//当市更新的时候需要刷新区县的数据;
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if(!this.hideArea){
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this.range.areas=areas;
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}
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}
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this.checkObj=obj;
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this.$nextTick(()=>{
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this.pickVal=arr;
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})
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let result=this.hideArea?`${province.label+city.label}`:`${province.label+city.label+area.label}`;
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let value=this.hideArea?[province.value,city.value]:[province.value,city.value,area.value];
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this.$emit("change",{
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result:result,
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value:value,
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obj:obj
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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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<style lang="scss">
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@import "./w-picker.css";
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</style>
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@ -0,0 +1,129 @@
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<template>
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<view class="w-picker-view">
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<picker-view class="d-picker-view" :indicator-style="itemHeight" :value="pickVal" @change="handlerChange">
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range" :key="index">{{item[nodeKey]}}</view>
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</picker-view-column>
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</picker-view>
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</view>
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</template>
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<script>
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export default {
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props:{
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itemHeight:{
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type:String,
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default:"44px"
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},
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options:{
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type:[Array,Object],
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default(){
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return []
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}
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},
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value:{
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type:String,
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default:""
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},
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defaultType:{
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type:String,
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default:"label"
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},
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defaultProps:{
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type:Object,
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default(){
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return{
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label:"label",
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value:"value"
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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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return {
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pickVal:[]
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};
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},
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computed:{
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nodeKey(){
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return this.defaultProps.label;
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},
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nodeValue(){
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return this.defaultProps.value;
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},
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range(){
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return this.options
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}
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},
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watch:{
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value(val){
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if(this.options.length!=0){
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this.initData();
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}
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},
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options(val){
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this.initData();
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}
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},
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created() {
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if(this.options.length!=0){
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this.initData();
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}
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},
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methods:{
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initData(){
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let dVal=this.value||"";
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let data=this.range;
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let pickVal=[0];
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let cur=null;
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let label="";
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let value,idx;
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if(this.defaultType==this.nodeValue){
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value=data.find((v)=>v[this.nodeValue]==dVal);
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idx=data.findIndex((v)=>v[this.nodeValue]==dVal);
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}else{
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value=data.find((v)=>v[this.nodeKey]==dVal);
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idx=data.findIndex((v)=>v[this.nodeKey]==dVal);
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}
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pickVal=[idx!=-1?idx:0];
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this.$nextTick(()=>{
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this.pickVal=pickVal;
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});
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if(this.defaultType==this.nodeValue){
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this.$emit("change",{
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result:value?value[this.nodeKey]:data[0][this.nodeKey],
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value:dVal||data[0][this.nodeKey],
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obj:value?value:data[0]
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})
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}else{
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this.$emit("change",{
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result:dVal||data[0][this.nodeKey],
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value:value?value[this.nodeValue]:data[0][this.nodeValue],
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obj:value?value:data[0]
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})
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}
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},
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handlerChange(e){
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let arr=[...e.detail.value];
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let pickVal=[arr[0]||0];
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let data=this.range;
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let cur=data[arr[0]];
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let label="";
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let value="";
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this.$nextTick(()=>{
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this.pickVal=pickVal;
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});
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this.$emit("change",{
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result:cur[this.nodeKey],
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value:cur[this.nodeValue],
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obj:cur
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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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<style lang="scss">
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@import "./w-picker.css";
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</style>
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.w-picker-flex2{
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flex:2;
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}
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.w-picker-flex1{
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flex:1;
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}
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.w-picker-view {
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width: 100%;
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height: 476upx;
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overflow: hidden;
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background-color: rgba(255, 255, 255, 1);
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z-index: 666;
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}
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.d-picker-view{
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height: 100%;
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}
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.w-picker-item {
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text-align: center;
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width: 100%;
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height: 88upx;
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line-height: 88upx;
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text-overflow: ellipsis;
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white-space: nowrap;
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font-size: 30upx;
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}
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