引入级联选择插件w-picker

yudao-ui-app/components/w-picker/linkage-picker.vue

@@ -0,0 +1,274 @@
+<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>
+