city-store-transfer/components/DropDown/DropDown.vue

<template>
	<view class="container">
		<view class="tabs-bg"></view>
		<view class="tabs">
			<view class="title-view" v-for="(item, index) in title" :key="item" @click="changeActiveIndex(index)"
				:class="{isActive: activeIndex === index}">
				<text>{{item}}</text>
				<view class="arrow" v-if="activeIndex !== index">
					<u-image src="/static/dropdown/dp_icon_lxia.png" width="14rpx" height="11rpx"></u-image>
				</view>
				<view class="arrow" v-if="activeIndex === index">
					<u-image src="/static/dropdown/dp_icon_hlxia.png" width="14rpx" height="11rpx"></u-image>
				</view>

			</view>
		</view>
		<view class="item-border">
			<DropDownItem v-if="activeIndex !== -1" :list="tablist" @cancelDrop="cancelDrop" @getQueryInfo="getQueryInfo"
				:type="title[activeIndex]" :activeChoose = "setActiveTag"/>
		</view>
	</view>
</template>

<script>
	/**
	 * @property {Array} postlist   传递一个二维数组
	 */
	import DropDownItem from "./DropDownItem.vue"
	export default {
		name: "DropDown",
		components: {
			DropDownItem
		},
		data() {
			return {
				title: ['行业', '区域', '面积', '筛选'],
				activeIndex: -1,
				postlist: [
					[],
					[],
					['全部','小于50m²', '50-200m²', '200-600m²', '600-800m²', '800-1000m²', '1000m²以上'],
					['全部','面积从大到小', '面积从小到大', '租金从大到小', '租金从小到大']
				],
				queryInfo: {
					region: '',
					sortType: '',
					areatype: '',
					business: ''
				},
				// 当前行业下拉列表
				currentClassList: 0,
				// 当前区域下拉列表
				currentRegionList: 0,
				// 当前面积下拉列表
				currentAreaList: 0,
				// 当前筛选下拉列表
				currentFilterList: 0, 
			};
		},
		computed: {
			tablist: function() {
				return this.postlist[this.activeIndex]
			}
		},
		created() {
			this.postlist[0] = JSON.parse(uni.getStorageSync('classList'))
			this.postlist[0].unshift('全部')
			this.postlist[1] = JSON.parse(uni.getStorageSync('regionList'))
			this.postlist[1].unshift('全区域')
			// this.postlist[2].unshift('所有面积')
			// this.postlist[3].unshift('全部')
		},
		methods: {
			changeActiveIndex(index) {
				if (this.activeIndex === index) {
					this.activeIndex = -1;
				} else
					this.activeIndex = index
			},
			cancelDrop() {
				this.activeIndex = -1;
			},
			getQueryInfo(querys) {
				
				console.log(querys, 'getquerysinfo');
				// 修改当前选择的各选项卡下标
				if (this.activeIndex === 0) {
					this.currentClassList = querys.business
				}else if (this.activeIndex === 1) {
					this.currentRegionList = querys.region
				}else if (this.activeIndex === 2) {
					this.currentAreaList = querys.areatype
				}else if (this.activeIndex === 3) {
					this.currentFilterList = querys.sortType
				}

				// 记忆各下拉框数据
				if(querys.business==0){
					querys.business = ''
				}else{
					querys.business = this.postlist[0][this.currentClassList]
				}
				if(querys.region==0){
					querys.region = ''
				}else querys.region = this.postlist[1][this.currentRegionList]

				
				this.queryInfo = {
					...this.queryInfo,
					...querys
				}
				const query = this.$u.queryParams(this.queryInfo)
				console.log(query, 'dropquery');
				this.$emit('getQueryInfo', this.queryInfo)
			},
			setActiveTag(){
				if(this.activeIndex == 0){
					return this.currentClassList
				}else if(this.activeIndex == 1){
					return this.currentRegionList
				}else if(this.activeIndex == 2){
					return this.currentAreaList
				}else{
					return this.currentFilterList
				}
			}
		}
	}
</script>

<style lang="scss" scoped>
	.isActive {
		color: #CC3333;
	}

	.container {
		margin-top: 10px;
		position: relative;

		.tabs-bg {
			position: absolute;
			background-color: $uni-bg-color-grey;
			height: 120rpx;
			width: 100%;
			transform: translateY(-20rpx);
			z-index: 2;
		}

		.tabs {
			background-color: #fff;
			height: 100rpx;
			display: flex;
			justify-content: space-around;
			position: relative;
			z-index: 3;
		}

		.title-view {
			display: flex;

			>text {
				font-size: 14px;
				display: flex;
				flex-direction: column;
				justify-content: center;
			}
		}

		.arrow {
			margin-left: 8rpx;
			display: flex;
			flex-direction: column;
			justify-content: center;
		}
	}

	.item-border {
		position: absolute;
		width: 100%;
		height: 100%;
	}
</style>