luban-mall/components/shopping-carts/cart-slide.vue

<template>
	<view>
		<view class="slide-list">
			<view class="slide-item" v-for="(item, index) in listData" :key="index">
				<view class="slide-item-li" @click="clickItemMethod(item)">
					<label class="radio"><radio :checked="item.ifcheck" @tap.stop="chooseEv(index)" color="#0073bc"/></label>
					<view class="shop-img " @tap="goDetail(item.spuId,item.is_series)">
						<image :src="item.image" mode="widthFix"></image>
					</view>
					<view class="shop-txt">
						<view class="shop-txt-top">
							<view class="title clips2">{{item.title}}</view>
							<view class="specs clips2">规格：{{item.customTitle==''?item.skuName:item.customTitle}}</view>
						</view>
						<view class="shop-txt-bottom">
							<!-- 商品价格 -->
							<view class="price">￥{{vipPrice?item.price:item.original_price}}</view>
							<!-- 商品数量 -->
							<view class="num">
								<!-- 减数量 -->
								<i class="icon icon-cut count-btn" @tap.stop="addCutEv(index,0)" :style="{backgroundColor: item.num==minNum || item.slide_x!=0 ? '#d3d3d3' : '#0073bc'}"></i>
								<!-- 实际数量 -->
								<input class="input" type="digit" @blur="blurEv(index,$event)" @focus="focusEv(item.num)" :disabled="item.slide_x!=0" v-model="item.num">
								<!-- 加数量 -->
								<i class="icon icon-add count-btn" @tap.stop="addCutEv(index,1)" :style="{backgroundColor: item.num==maxNum || item.slide_x!=0 ? '#d3d3d3' : '#0073bc'}"></i>
							</view>
						</view>
					</view>
				</view>
			</view>
		</view>
		
		<!-- 全选 -->
		<view class="change-all">
			<label class="label" @tap="chooseAll"><radio :checked="allChoose" color="#0073bc" style="transform: scale(.8);"/><text>全选</text></label>
			<view class="all-price">
				<view class="price">合计：<span>￥{{allPrice}}</span></view>
				<view class="btn" :style="{background: !buyNum ? '#cccccc' : '#0073bc'}" @tap="submitEv">{{allPrice==0 ? '去购物' : `提交订单 (${buyNum})`}}</view>
			</view> 
		</view> 
		<view v-if="listData.length!=0 && total==listData.length"><pitera textStr="—— 到底啦 ——"></pitera></view>
		<nothing-page v-if="!ifLoading && !listData.length" content="您的购物车,空空如也(*^▽^*)"></nothing-page>
	</view> 
</template>

<script>
	import { mapState,mapGetters,mapMutations } from 'vuex'//引入mapState
	import pitera from '@/components/nothing/pitera';
	import {getCartNum} from '@/jsFile/public-api.js';
	export default {
		components:{
			pitera
		},
		name: 'cart-slide', 
		props: {
			list: { //数据list
				type: Array,
				default () {
					return [];
				}
			},
			button: { //按钮数据list
				type: Array,
				default () {
					return [
						// {title: '分享',background: '#c4c7cd'},
						{title: '删除',background: 'linear-gradient(to right,#ff3771 0%,#fd5549 100%)'}
					];
				}
			},
			customB:{
				type:String,
				default:'0'
			},
			skuId:{
				type:String,
				default:0
			}
		},
		data() {
			return {
				listData: [],
				start_slide_x: 0,
				btnWidth: 0,
				startX: 0,
				LastX: 0,
				startTime: 0,
				itemIndex: 0,
				originalNum:0,//当前输入框原值
				maxNum:99999,//最大可输入数量
				minNum:1,//最小可输入数量
				ifLoading:true,
				page:1,
				size:10,
				total:0,
				vipPrice:false,// 是否显示会员价
			};
		},
		mounted() {
			this.listData = this.list;
			this.getList();
		},
		onShow() {
			
		},
		computed: {
			windowWidth() {
				return uni.getSystemInfoSync().windowWidth;
			},
			// 总价及合计
			allPrice() {
				let allPrice = 0;
				this.listData.forEach(item=>{
					if(item.ifcheck) {
						if(this.vipPrice){
							allPrice += item.price*item.num;
						}else{
							allPrice += item.original_price*item.num;
						}
						
					}
				})
				return this.$toolAll.tools.addXiaoShu(allPrice);
				// return allPrice;
			},
			
			// 要删除的数量
			buyNum() {
				let buyNum = 0;
				this.listData.forEach(item=>{
					if(item.ifcheck) {
						buyNum += 1;
					}
				})
				return buyNum;
			},
			
			// 全选
			allChoose() {
				let ifAll = false;
				if(this.listData.length) {
					let temparr = this.listData.filter(item=>{return item.ifcheck==false})
						temparr.length==0 ? ifAll = true : ifAll = false;
				}
				return ifAll
			},
			...mapState({
				footHeight: state => state.moduleA.footHeight,
			}),
		},
		methods: {
			getList(){
				uni.showLoading();
				this.total = 0;
				let params = {
					page:this.page,
					size:this.size
				}
				this.$requst.post('/api/order/shopping-cart',params).then(res=>{
					if(res.code==0){
						if(uni.getStorageSync('business_code')!==''){
							this.vipPrice = true;
						}
						this.total = res.data.total;
						console.log(res,'购物车列表')
						if(this.page==1) this.listData = [];
						if(res.data.list.length){
							res.data.list.forEach(item=>{
								let obj = {
									id: item.id,
									spuId:item.spu.id,
									skuId:item.sku_id,
									coding:item.sku.coding,
									image: item.spu.spu_cover,
									title: item.spu.spu_name,
									content: item.spu.unit,
									customTitle: item.sku.custom_title,
									skuName: item.sku.sku_name,
									is_series:item.spu.is_series,
									slide_x: 0,
									price:item.sku.sku_price,
									original_price: item.sku.sku_original_price,
									num:item.num,
									ifcheck:this.skuId==item.sku_id ? true : false,
									ifExit:true,
									ifShow:true,
								}
								this.listData.push(obj);
								console.log(this.listData);
							})
						}
					}
					this.ifLoading = false;
					uni.hideLoading();
				})
				// for (let i = 0; i < 10; i++) {
				// 	this.listData.push({id: 1,image: 'https://s6.jpg.cm/2022/02/14/L4oDhy.jpg',title: '标题',content: '描述描述描述描述描述描述',slide_x: 0,price:199,num:1,ifcheck:false,ifExit:true,ifShow:true})
				// }
			},
			// 选中事件
			chooseEv(index) {
				this.listData[index].ifcheck = !this.listData[index].ifcheck;
			},
			// 全选事件
			chooseAll(){
				let exit = this.listData.filter(item=>item.ifcheck==false);
				if(exit.length){
					this.listData.forEach(item=>item.ifcheck = true);
				} else {
					this.listData.forEach(item=>{item.ifcheck = false});
				}
			},
			// 去购物、去结算、删除
			submitEv(){
				if(this.allPrice==0) {
					// 去购物
					uni.reLaunch({
						url:`/pages/tabbar/cate/cate`
					})
				} else {
					// 去结算
					let buyList = [];
					this.listData.forEach(item=>{
						if(item.ifcheck) {
							let obj = {
								sku_coding: item.coding,
								num: item.num
							}
							buyList.push(obj);
						}
					})
					uni.setStorageSync('buyList',buyList);
					uni.navigateTo({
						url:'/pagesA/cart/settlement'
					})
				}
			},
			
			// 数量加减事件
			addCutEv(index,num) {
				if(this.listData[index].slide_x==0){
					if(num) {
						// 加 ，如果当前商品数量不等于最大值
						if(this.listData[index].num != this.maxNum) {
							this.listData[index].num++;
						}
					} else {
						// 减 ，如果当前商品数量大于最小值
						if(this.listData[index].num > this.minNum) {
							this.listData[index].num--;
						}else{
							uni.showModal({
								title: '提示',
								content: '是否将该商品移除购物车？',
								success: (res)=> {
									if (res.confirm) {
										this.delShopEv(this.listData[index].id);
									}
								}
							});
						}
					}
					this.$requst.post('/api/order/shopping-cart-change-num',{id:this.listData[index].id,num:this.listData[index].num}).then(res=>{
						if(res.code!=0){
							this.$toolAll.tools.showToast(res.msg);
						}
					})
				}
			},
			// 删除商品
			delShopEv(id){
				this.$requst.post('/api/order/shopping-cart-del',{id:id}).then(res=>{
					if(res.code==0){
						this.$toolAll.tools.showToast('删除成功');
						this.getList();
					}else{
						this.$toolAll.tools.showToast(res.msg)
					}
				})
			},
			
			// 查看商品详情
			goDetail(id,type) {
				if(type == 0){
					uni.navigateTo({
						url:`/pagesA/shop/detail?id=${id}&source=shop`
					})
				}
				if(type == 1){
					uni.navigateTo({
						url:`/pages/tabbar/kit/detail?id=${id}`
					})
				}
			},
			
			// 输入框获取焦点事件
			focusEv(num) {
				// 储存当前商品的原始数值
				this.originalNum = num;
			},
			// 输入框失去焦点事件
			blurEv(index,e) {
				// 失去焦点时，获取当前输入框里的数值
				let currentNum = e.detail.value*1;
				// 如果当前输入框的值不等于0或空，并且当前输入框的值大于最大值，当前商品的数量 = 最大值， 否则为当前输入框输入的值
				this.listData[index].num = currentNum ? currentNum > this.maxNum ? this.maxNum : currentNum : this.originalNum;
			},
			clone(data) {
				const type = typeof data
				let obj;
				if (type === 'array') {
					obj = [];
				} else if (type === 'object') {
					obj = {};
				} else {
					// 不再具有下一层次
					return data;
				}
				if (type === 'array') {
					for (let i = 0, len = data.length; i < len; i++) {
						obj.push(this.clone(data[i]));
					}
				} else if (type === 'object') {
					// 对原型上的方法也拷贝了....
					for (const key in data) {
						obj[key] = this.clone(data[key]);
					}
				}
				return obj;
			},

			// 滑动开始
			touchStart(e, index) {
				if (this.itemIndex == index) {
					this.itemIndex = index
				}
				//记录手指放上去的时间
				this.startTime = e.timeStamp;
				//记录滑块的初始位置
				this.start_slide_x = this.listData[index].slide_x;
				// 按钮宽度
				//#ifdef MP-WEIXIN
				uni.createSelectorQuery().in(this).selectAll('.group-btn').boundingClientRect(res => {
					if (res != null) {
						this.btnWidth = res[index].width * -1;
					}
				}).exec();
				//#endif
				//#ifdef H5 || APP-PLUS
				uni.createSelectorQuery()
					.selectAll('.group-btn')
					.boundingClientRect()
					.exec(res => {
						if (res[0] != null) {
							this.btnWidth = res[0][index].width * -1;
						}
					});
				//#endif
				// 记录上一次开始时手指所处位置
				this.startX = e.touches[0].pageX;
				// 记录上一次手指位置
				this.lastX = this.startX;
				//初始化非当前滑动消息列的位置			
				for (var i in this.listData) {
					if (index != i) {
						this.listData[i].slide_x = 0;
					}
				}
			},
			// 滑动中
			touchMove(e, index) {
				const endX = e.touches[0].pageX;
				const distance = endX - this.lastX;
				// 预测滑块所处位置
				const duang = this.listData[index].slide_x + distance;
				// 如果在可行区域内
				if (duang <= 0 && duang >= this.btnWidth) {
					this.listData[index].slide_x = duang;
				}
				// 此处手指所处位置将成为下次手指移动时的上一次位置
				this.lastX = endX;
			},
			// 滑动结束
			touchEnd(e, index) {
				let distance = 10;
				const endTime = e.timeStamp;
				const x_end_distance = this.startX - this.lastX;
				if (Math.abs(endTime - this.startTime) > 200) {
					distance = this.btnWidth / -2;
				}
				// 判断手指最终位置与手指开始位置的位置差距
				if (x_end_distance > distance) {
					this.listData[index].slide_x = this.btnWidth;
				} else if (x_end_distance < distance * -1) {
					this.listData[index].slide_x = 0;
				} else {
					this.listData[index].slide_x = this.start_slide_x;
				}
			},
			// 点击回复原状
			recover(index) {
				this.listData[index].slide_x = 0;
			},
			/** 
			 * 点击按钮触发事件
			 * @param {Object} item 列表数据 
			 * @param {Object} buttonItem 按钮数据
			 * @param {Object} index 列表数据key
			 */
			clickMethod(item, buttonItem, index,key) {
				// this.$emit("change", item, buttonItem, index);
				// if(key) {
					// 进入删除
					// 修改为不存在的商品
					this.$requst.post('/api/order/shopping-cart-del',{id:this.listData[index].id}).then(res=>{
						if(res.code==0){
							this.listData[index].ifExit = false;
							// 修改该商品不被选中
							this.listData[index].ifcheck = false;
							setTimeout(()=>{
								// 隐藏该商品
								this.listData[index].ifShow = false;
							},1000)
							setTimeout(()=>{
								// 重构数组列表，去除不存在的商品
								this.listData = this.listData.filter(item=>item.ifExit==true);
							},1000)
							getCartNum();
						}
					})
				// }
			},
			/**
			 * 点击按钮触发事件
			 * @param {Object} item 列表数据 
			 */
			clickItemMethod(item) {
				this.$emit("click", item)
			}
		}
	};
</script>

<style scoped>
	.slide-list{
		margin-top: 20rpx;
	}
	.slide-item{
		margin-top: 30rpx;
	}
	.slide-list .slide-item:first-child{
		margin-top: 0;
	}
	.slide-item-li{
		box-sizing: border-box;
		display: flex;
		align-items: center;
		padding: 20rpx 30rpx;
		background-color: #FFFFFF;
	}
	.slide-item-li .radio>radio{
		transform: scale(.8);
	}
	.slide-item-li .shop-img{
		width: 230rpx;
		height: 150rpx;
		border-radius: 10rpx;
		margin: 0 24rpx 0 6rpx;
		overflow: hidden;
	}
	.slide-item-li .shop-img image{
		width: 230rpx;
		min-height: 150rpx;
	}
	.slide-item-li .shop-txt{
		width: calc(100% - 300rpx);
	}
	.shop-txt-top{
		min-height: 100rpx;
	}
	.shop-txt-top .title{
		font-size: 30rpx;
		line-height: 1.5;
		color: #000000;
		font-weight: bold;
	}
	.shop-txt-top .specs{
		font-size: 24rpx;
		line-height: 1.5;
		color: #8c8c9b;
		margin: 3rpx;
	}
	.shop-txt-bottom{
		display: flex;
		justify-content: space-between;
		align-items: center;
		width: 100%;
		height: 50rpx;
	}
	.shop-txt-bottom .price{
		font-size: 30rpx;
		line-height: 1.5;
		color: #f81c1c;
	}
	.shop-txt-bottom .num{
		display: flex;
		justify-content: space-between;
		align-items: center;
		width: 170rpx;
		font-size: 24rpx;
	}
	.shop-txt-bottom .num>.count-btn{
		display: flex;
		justify-content: center;
		align-items: center;
		font-size: 24rpx;
		width: 40rpx;
		height: 40rpx;
		background-color: #000000;
		color: #FFFFFF; 
		border-radius: 10rpx;
	}
	.shop-txt-bottom .num>.input{
		box-sizing: border-box;
		width: 78rpx;
		height: 40rpx;
		border: 2rpx solid #d3d3d3;
		border-radius: 10rpx;
		text-align: center;
	}
	.change-all{
		box-sizing: border-box;
		display: flex;
		justify-content: space-between;
		align-items: center;
		width: 100vw;
		height: 130rpx;
		padding: 0 30rpx;
		position: fixed;
		left: 0;
		bottom: 0;
		background-color: #FFFFFF;
	}
	.change-all .label{
		display: flex;
		align-items: center;
		font-size: 24rpx;
	}
	.all-price{
		display: flex;
		align-items: center;
	}
	.all-price .price{
		font-size: 24rpx;
		margin-right: 25rpx;
		color: #000000;
	}
	.all-price .btn{
		line-height: 84rpx;
		padding: 0 30rpx;
		border-radius: 10rpx;
		font-size: 32rpx;
		color: #FFFFFF;
	}
</style>