Vue編寫多地區選擇組件

<template>
 <div class="manyAreaSelect">
 <div class="item">
 <div class="item-title">
 <span> 選擇省</span>
 </div>
 <div class="item-content">
 <ul>
 <li v-for="(item,index) in chinaArea" :class="item.selected?'active':''" :key="index" @click="getCityList(item)">{{item.regionName}}</li>
 </ul>
 </div>
 <div class="item-footer"></div>
 </div>
 <div class="item">
 <div class="item-title">
 <span>選擇市</span>
 </div>
 <div class="item-content">
 <ul v-show="cityList.length===0">
 <li>
 <<請選擇省份</li>
 </ul>
 <ul v-show="!notLimitButton.notLimitCity &&cityList.length!==0">
 <li v-for="(item,index) in cityList" :class="item.selected ? 'active':''" :key="index" @click="getDistricList(item)">{{item.regionName}}</li>
 </ul>
 </div>
 <div class="item-footer">
 <button class="button" :class="notLimitButton.notLimitCity?'success':''" @click="cityNotLitmit({regionName:'不限',regionId:'0'})" size="mini" :disabled="!selectItem.province.regionName">不限城市</button>
 </div>
 </div>
 <div class="item">
 <div class="item-title">
 <span>選擇地區</span>
 </div>
 <div class="item-content">
 <ul v-show="districList.length===0">
 <li>
 <<請選擇城市</li>
 </ul>
 <ul v-show="!notLimitButton.notLimitCity && !notLimitButton.notLimitDistrict && districList.length!==0">
 <li v-for="(item,index) in districList" :class="item.selected?'active':''" :key="index" @click="getAreaCombineID(item)">{{item.regionName}}</li>
 </ul>
 </div>
 <div class="item-footer">
 <button class="button" :class="notLimitButton.notLimitDistrict ?'success':''" @click="districNotLitmit({regionName:'不限',regionId:'0'})" :disabled="!selectItem.city.regionName ||!selectItem.province.regionName || notLimitButton.notLimitCity ">不限地區</button>
 </div>
 </div>
 <div class="trangle">
 <div class="trangle-wrap">
 <div class="left">
 <button class="button" @click="transferToRight" :disabled="direactionStatusToRight">
 <i :class="this.iconDirection.right"></i>
 </button>
 </div>
 <div class="right">
 <button class="button" @click="transferToLeft" :disabled="direactionStatusToLeft">
 <i :class="this.iconDirection.left"></i>
 </button>
 </div>
 </div>
 </div>
 <div class=" item ">
 <div class="item-title ">
 <span>已選位置</span>
 </div>
 <div class="item-content ">
 <ul class="selectedContent">
 <li v-for="(item,index) in selectedList" :class="item.selected?'active':''" :key="index" @click="selectedAreaSingle(item)">{{item.regionName}}</li>
 </ul>
 </div>
 <div class="item-footer">
 <button class="button" @click="selectedAllArea()" :disabled="rightDataList.length=== 0" :class="selectedAllButtonStatus?'success':''">{{selectedAllButtonStatus?'反選':'全部'}}</button>
 </div>
 </div>
 </div>
</template>

<script>
 import _ from 'lodash';
 export default {
 name: 'manyAreaSelect',
 data: function () {
 return {
 chinaArea: JSON.parse(window.localStorage.getItem('chinaArea')) || [], // 這是地區聯動的JSON
 notLimitButton: {
 notLimitCity: false, // 城市不限
 notLimitDistrict: false, // 地區不限
 },
 selectedAllButtonStatus: false, // 已選位置列表全部按鈕的狀態
 selectItem: {
 province: {},
 city: {},
 distric: {}
 },
 cityList: [], // 城市列表
 districList: [], // 區域列表
 rightDataList: [], // 選中項目組合成的渲染列表
 rightData: [], // 選中需要移除的
 leftData: [], // 左邊選中的轉發
 }
 },
 props: {
 selectedData: {
 type: [String, Object, Array]
 },
 iconDirection: {
 type: Object,
 default: function () { // 箭頭圖標
 return {
 left: 'fzicon fz-ad-you',
 right: 'fzicon fz-ad-right'
 }
 }
 }
 },
 computed: {
 selectedList () { // 已選中列表
 if (this.selectedData && this.selectedData !== '') {
 this.rightDataList = this.selectedData;
 return this.rightDataList;
 } else {
 return this.rightDataList;
 }

 },
 direactionStatusToRight () { // 控制可以轉移的箭頭狀態
 if (this.notLimitButton.notLimitCity || this.notLimitButton.notLimitDistrict) {
 if (this.notLimitButton.notLimitCity) {
 this.removeAllSelected(this.cityList);
 this.removeAllSelected(this.districList);
 return false;
 } else {
 if (this.notLimitButton.notLimitDistrict) {
 this.removeAllSelected(this.districList);
 return false;
 }
 }
 return false;
 } else {
 if (this.selectItem.distric.regionName) {
 return false;
 }
 return true;
 }
 },
 direactionStatusToLeft () { // 控制可以轉移的箭頭狀態
 if (this.rightData.length === 0) {
 return true
 } else {
 return false
 }
 }
 },
 methods: {
 mapSelect (list, value, type) { // 高亮選中
 if (type) {
 return list.map(pitem => {
 if (pitem.regionId === value.regionId) {
 if (value.selected && value.selected === true) {
 this.$delete(pitem, 'selected');
 } else {
 this.$set(pitem, 'selected', true)
 }
 }
 })
 } else {
 return list.map(pitem => {
 if (pitem.regionId === value.regionId) {
 if (value.selected && value.selected === true) {
 this.$delete(pitem, 'selected');
 } else {
 this.$set(pitem, 'selected', true)
 }
 } else {
 this.$delete(pitem, 'selected');
 }
 })
 }
 },
 resetToDefault () {
 this.leftData = []; // 清空需要轉移的數組
 this.notLimitButton = { // 重置按鈕狀態
 notLimitCity: false, // 城市不限
 notLimitDistrict: false, // 地區不限
 };
 this.selectItem.city = {};
 this.selectItem.distric = {}
 this.removeAllSelected(this.cityList); // 清除選中狀態
 this.removeAllSelected(this.districList); // 清除選中狀態
 this.cityList = [];
 this.districList = [];
 },
 getCityList (item) {
 this.resetToDefault();
 if (item) {
 this.cityList = item.child; // 獲取城市列表
 this.selectItem.province = item; // 保存省份對象
 this.mapSelect(this.chinaArea, item); // 高亮選擇,單選
 }
 },
 getDistricList (item) {
 this.leftData = []; // 清空需要轉移的數組
 this.notLimitButton.notLimitDistrict = false; // 重置按鈕狀態
 this.removeAllSelected(this.districList); // 清除選中狀態
 this.selectItem.distric = {};
 this.districList = [];
 if (item) {
 this.districList = item.child; // 獲取區域列表
 this.selectItem.city = item; // 保存省份對象
 this.mapSelect(this.cityList, item); // 高亮選擇,單選
 }

 },
 getAreaCombineID (item) { // 獲取組合ID
 if (item) {
 this.selectItem.distric = item;
 this.mapSelect(this.districList, item, 'manySelect'); // 區域高亮選擇,多選

 this.leftData.push({
 regionName: this.selectItem.province.regionName + '-' + this.selectItem.city.regionName + '-' + item.regionName,
 regionId: this.selectItem.province.regionId + '-' + this.selectItem.city.regionId + '-' + item.regionId
 })
 this.leftData = _.uniqBy(this.leftData, 'regionId');
 if (this.leftData.length === this.districList.length) {
 this.leftData = [];
 this.notLimitButton.notLimitDistrict = true; // 轉為不限制地區
 this.leftData.push({
 regionName: this.selectItem.province.regionName + '-' + this.selectItem.city.regionName + '-不限',
 regionId: this.selectItem.province.regionId + '-' + this.selectItem.city.regionId + '-0'
 })
 }
 }

 },
 cityNotLitmit (item) { // 城市不限
 this.leftData = []; // 請空數組
 this.notLimitButton.notLimitCity = !this.notLimitButton.notLimitCity; // 不限按鈕狀態
 this.leftData.push({
 regionName: this.selectItem.province.regionName + '-不限-不限',
 regionId: this.selectItem.province.regionId + '-0-0'
 })
 },
 districNotLitmit (item) { // 區域不限
 this.leftData = []; // 請空數組
 this.notLimitButton.notLimitDistrict = !this.notLimitButton.notLimitDistrict; // 不限按鈕狀態
 this.leftData.push({
 regionName: this.selectItem.province.regionName + '-' + this.selectItem.city.regionName + '-不限',
 regionId: this.selectItem.province.regionId + '-' + this.selectItem.city.regionId + '-0'
 })
 },
 transferToRight () { // 選中推入到已選中列表區域
 if (this.leftData && this.leftData.length !== 0) {
 if (this.leftData.length === 1) { // 長度只有1,那就只有不限城市或者地區了
 let limitId = this.leftData[0].regionId.split('-'); // 比對比對,切割成數組
 this.rightDataList.map(item => {
 let id = item.regionId.split('-');
 if (limitId[0] === id[0]) {
 if (limitId[1] === '0') { // 不限城市
 this.rightDataList = this.rightDataList.filter(ritem => {
 let rid = ritem.regionId.split('-');
 if (limitId[0] !== rid[0]) {
 return ritem;
 }
 })
 } else {
 if (limitId[2] === '0') { // 不限地區
 this.rightDataList = this.rightDataList.filter(ritem => {
 let rid = ritem.regionId.split('-');
 if ((limitId[0] === rid[0] && limitId[1] === rid[1])) {
 if (ritem[2] === '0') {
 return ritem;
 }
 } else {
 if (limitId[0] !== rid[0] || limitId[1] !== rid[1]) {
 return ritem;
 }
 }
 })
 } else {
 this.rightDataList = this.rightDataList.filter(ritem => {
 let rid = ritem.regionId.split('-');
 if (limitId[0] === rid[0]) {
 if (limitId[1] === rid[1]) {
 if (!(rid[2] === '0')) {
 return ritem;
 }
 } else {
 if (!(rid[1] === '0')) {
 return ritem
 }
 }
 } else {
 return ritem
 }
 })
 }
 }

 }
 })
 } else {
 let limitId = this.leftData[0].regionId.split('-'); // 比對比對,切割成數組
 this.rightDataList = this.rightDataList.filter(ritem => {
 let rid = ritem.regionId.split('-');
 if (limitId[0] === rid[0]) {
 if (limitId[1] === rid[1]) {
 if (!(rid[2] === '0')) {
 return ritem;
 }
 } else {
 if (!(rid[1] === '0')) {
 return ritem
 }
 }
 } else {
 return ritem
 }
 })
 }
 this.leftData.map(item => {
 this.rightDataList.push(item);
 })
 this.rightDataList = _.uniqBy(this.rightDataList, 'regionId');
 this.resetToDefault();
 }


 },
 selectedAreaSingle (item) { // 已選擇區域單個選擇
 if (item) {
 this.rightData = [];
 this.mapSelect(this.rightDataList, item, 'manySelect'); // 區域高亮選擇,多選
 this.rightDataList.map(item => {
 if (item.selected) {
 this.rightData.push(item)
 }
 })
 }

 },
 selectedAllArea () { // 已選中區域全選反選
 if (this.selectedAllButtonStatus) {
 this.removeAllSelected(this.rightDataList);
 this.rightData = [];
 } else {
 this.rightDataList.map(item => this.$set(item, 'selected', true));
 this.rightData = this.rightDataList;
 }
 this.selectedAllButtonStatus = !this.selectedAllButtonStatus;
 },
 transferToLeft () { // 從已選中列表區域退回待轉發區域
 if (this.rightData && this.rightData.length !== 0) {
 this.rightDataList = this.rightDataList.filter(item => {
 if (!item.selected) {
 return item;
 }
 })
 this.rightData = [];
 }
 },
 removeAllSelected (list) { // 清空選中狀態
 list.map(item => this.$delete(item, 'selected'));
 }
 },
 watch: {
 'rightDataList' (newValue, oldValue) { // 選擇列表的值變動響應外部值的變動
 if (newValue.length !== this.rightData.length) {
 this.selectedAllButtonStatus = false;
 } else {
 if (newValue.length === 0) {
 this.selectedAllButtonStatus = false;
 } else {
 this.selectedAllButtonStatus = true;
 }
 }
 this.$emit('update:selectedData', newValue);
 }
 }
 }
</script>

<style scoped lang="scss">
 ul {
 padding: 0;
 margin: 0;
 max-height: 100%;
 overflow-y: auto;
 li {
 cursor: pointer;
 text-align: center;
 padding: 5px;
 &.active,
 &:hover {
 background: #e4e8f1;
 color: #48576a;
 }
 }
 }

 .manyAreaSelect {
 position: relative;
 z-index: 2005;
 .item {
 border: 1px solid #d1dbe5;
 background: #fff;
 box-shadow: 0 2px 4px rgba(0, 0, 0, .12), 0 0 6px rgba(0, 0, 0, .04);
 display: inline-block;
 vertical-align: middle;
 min-width: 180px;
 box-sizing: border-box;
 position: relative;
 height: 100%;
 min-height: 260px;
 }
 .item-title {
 height: 36px;
 line-height: 36px;
 background: #fbfdff;
 margin: 0;
 border-bottom: 1px solid #d1dbe5;
 box-sizing: border-box;
 color: #1f2d3d;
 text-align: center;
 }
 .trangle {
 background: transparent;
 display: inline-block;
 vertical-align: middle;
 width: 40px;
 box-sizing: border-box;
 height: 100%;
 position: relative;
 .trangle-wrap {
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%, -50%);
 }
 .left,
 .right {
 margin: 10px 5px;
 }
 ;
 }

 .item-content {
 font-size: 13px;
 height: 190px;
 padding: 8px 2px;
 }
 .item-footer {
 padding: 5px 0;
 height: 40px;
 text-align: center;
 }
 }

 .selectedContent {
 li {
 text-align: left;
 padding-left: 25px;
 }
 }



 .button {
 display: inline-block;
 line-height: 1;
 white-space: nowrap;
 cursor: pointer;
 background: #fff;
 border: 1px solid #c4c4c4;
 color: #1f2d3d;
 margin: 0;
 border-radius: 4px;
 padding: 4px;
 font-size: 12px;
 border-radius: 4px;
 -webkit-appearance: button;
 outline: none;
 &.success {
 background: #42d885;
 border-color: #42d885;
 color: #fff;
 }

 &:disabled {
 color: #bfcbd9;
 cursor: not-allowed;
 background-image: none;
 background-color: #eef1f6;
 border-color: #d1dbe5;
 }
 }
</style>

<!--selectedData就是響應的數據.sync是2.3回歸的語法糖-->
<!--可以綁定iconDirection傳入箭頭的iconfont,Object-->

<many-area-select :selectedData.sync="manyAreaValue"></many-area-select>