xlcs/atguigu-tuan/pages/categories/categories.vue

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2023-09-22 15:41:37 +08:00
<template>
<view class="gg">
<u-navbar :border-bottom="false" :is-back="false">
<view class="u-flex u-m-l-20 u-m-r-20 gg-search-navbar">
<view class="u-font-xl u-m-r-20">分类</view>
<view class="gg-notice-search-bar">
<u-icon class="gg-notice-search-bar-left-icon" name="search"></u-icon>
<u-notice-bar
:border-radius="30"
:is-circular="false"
:list="list"
:more-icon="false"
:volume-icon="false"
class="gg-notice-search-bar-u-notice-bar"
mode="vertical"
type="none"
></u-notice-bar>
</view>
</view>
</u-navbar>
<view class="gg-menu-wrap">
<scroll-view :scroll-top="scrollTop" class="gg-tab-view menu-scroll-view" scroll-with-animation scroll-y>
<view
v-for="(item, index) in categories"
:key="item.id"
:class="[current === index ? 'gg-tab-item-active' : '']"
:data-current="index"
class="gg-tab-item"
@tap.stop="swichCategory(item.id, index)"
>
<text class="u-line-1">{{ item.name }}</text>
</view>
</scroll-view>
<scroll-view class="gg-right-box" scroll-y @scrolltolower="loadMore">
<view v-for="(item, index) in searchResult.content" :key="item.id" @click="gotoProductItem(item.id)">
<view class="u-m-b-10 u-m-l-20 u-m-r-20 u-flex gg-product-item">
<ListImgItem
:showBottom="item.skuType === 0 && item.isNewPerson === 1"
:showLeft="item.skuType === 1"
:showRight="false"
:src="item.imgUrl"
height="200rpx"
width="200rpx"
>
<template #left>秒杀商品</template>
</ListImgItem>
<view class="gg-product-item-msg u-border-bottom u-p-b-20 u-m-l-20">
<view>
<view class="u-font-lg">{{ item.title }}</view>
<view class="u-type-info u-font-sm">已售{{ item.sale }}/剩余{{ item.stock }}</view>
<block v-if="item.ruleList">
<view v-for="(rule, ruleIndex) in item.ruleList" :key="ruleIndex" class="u-font-xs u-type-error-dark">
{{ rule }}
</view>
</block>
</view>
<view class="u-flex u-row-between">
<view class="u-type-error gg-product-item-msg-price-container">
<text></text>
<text class="gg-product-item-msg-price-container-value">{{ item.price }}</text>
</view>
<AddToCart :shopDetail="item"></AddToCart>
</view>
</view>
</view>
<u-gap height="20"></u-gap>
</view>
<!-- 如果列表没有更多数据则显示分隔线 -->
<u-divider v-if="!(searchResult.first && searchResult.empty) && searchResult.last" :height="60"
bg-color="transparent">我是有底线的
</u-divider>
<!-- 如果列表没有数据则显示空内容 -->
<u-empty :show="searchResult.first && searchResult.empty" mode="list"></u-empty>
</scroll-view>
</view>
</view>
</template>
<script>
import {mapState, mapActions} from 'vuex';
export default {
data() {
return {
list: ['最见搜索关键字', '暂时未处理搜索页', '可以考虑最见关键字'],
current: 0, // 预设当前项的值
categoryId: 0, // 当前选中的分类Id
scrollTop: 0, //tab标题的滚动条位置
menuHeight: 0, // 左边菜单的高度
menuItemHeight: 0, // 左边菜单item的高度
filter: {
page: 1, // 当前页码
limit: 5, // 每页记录数
keyword: '', // 关键字
wareId: ''
},
searchResult: {
content: [],
last: false
} // 搜索商品结果对象
};
},
computed: {
...mapState('categoriesModule', ['categories'])
},
methods: {
...mapActions('categoriesModule', ['getCategoriesAction']),
...mapActions('cartModule', ['getCartListAction']),
/*
为什么不使用scroll-into-view而使用手动计算的方式
这是因为scroll-into-view不会进行居中菜单位置的定位处理
为了更好的用户操作体验可以让当前选中菜单定位于整体滚动的居中位置
*/
// 点击左边的栏目切换
async swichCategory(categoryId, index) {
Object.assign(this.$data.searchResult, this.$options.data().searchResult); // 这里重置 searchResult 下的所有数据
Object.assign(this.$data.filter, this.$options.data().filter); // 这里重置 filter 下的所有数据
this.categoryId = categoryId;
if (index == this.current) return; // 防止选中分类的再次点击
this.current = index;
// 如果为0意味着尚未初始化
if (this.menuHeight == 0 || this.menuItemHeight == 0) {
await this.getElRect('menu-scroll-view', 'menuHeight');
await this.getElRect('gg-tab-item', 'menuItemHeight');
}
// 将菜单菜单活动item垂直居中
this.scrollTop = index * this.menuItemHeight + this.menuItemHeight / 2 - this.menuHeight / 2;
// 获取右侧商品搜索结果数据
this.getCategoryProductList();
},
// 获取一个目标元素的高度
getElRect(elClass, dataVal) {
new Promise((resolve, reject) => {
const query = uni.createSelectorQuery().in(this);
query
.select('.' + elClass)
.fields({size: true}, res => {
// 如果节点尚未生成res值为null循环调用执行
if (!res) {
setTimeout(() => {
this.getElRect(elClass);
}, 10);
return;
}
this[dataVal] = res.height;
})
.exec();
});
},
// 获取分类商品列表
async getCategoryProductList() {
const o = {
categoryId: this.categoryId,
page: this.filter.page,
keyword: this.filter.keyword,
limit: this.filter.limit,
wareId: this.filter.wareId
};
let result = await this.$u.api.getSearchSku(o);
this.searchResult = {...result, content: [...this.searchResult.content, ...result.content]};
},
// 加载更多数据
loadMore() {
if (!this.searchResult.last) {
this.filter.page = this.filter.page + 1;
this.getCategoryProductList();
}
},
// 跳转到商品详情页
gotoProductItem(skuId) {
this.$u.route('/pages/homeItem/homeItem', {
skuId
});
}
},
async mounted() {
await this.getCategoriesAction(); // 从仓库中获取分类列表
this.categoryId = this.categories[0].id; // 获取第一个分类的id
await this.getCategoryProductList(); // 商品数据搜索请求
// 需要获取购物车数据列表,将最新获取的数据渲染到页面
this.getCartListAction();
}
};
</script>
<style lang="scss" scoped>
.gg {
height: calc(100vh);
display: flex;
flex-direction: column;
&-search-navbar {
margin-top: -20rpx;
width: 100%;
}
/* 滚动信息搜索框 */
&-notice-search-bar {
flex: 1;
display: flex;
align-items: center;
background-color: #ededed;
border-radius: 30rpx;
/* 滚动信息搜索框左侧图标 */
&-left-icon {
position: relative;
left: 20rpx;
color: $u-light-color;
}
/* 滚动信息搜索框中的字体设置 */
&-u-notice-bar {
flex: 1;
/* 深层穿透修改子组件字体颜色样式 */
::v-deep .u-news-item {
color: $u-light-color !important;
}
}
}
/* 菜单包装器 */
&-menu-wrap {
flex: 1;
display: flex;
overflow: hidden;
}
/* 左侧sv选项卡模式菜单 */
&-tab-view {
width: 200rpx;
height: 100%;
}
/* 左侧菜单选项卡项 */
&-tab-item {
height: 110rpx;
background: #f6f6f6;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: center;
font-size: 26rpx;
color: #444;
font-weight: 400;
line-height: 1;
/* 激活状态 */
&-active {
position: relative;
color: $u-type-warning;
font-size: 30rpx;
font-weight: 600;
background: #fff;
/* 伪类处理 */
&::before {
content: '';
position: absolute;
border-left: 4px solid $u-type-warning;
height: 32rpx;
left: 0;
top: 39rpx;
}
}
}
/* 产品列表项 */
&-product-item {
height: 210rpx;
&-msg {
height: 100%;
flex: 1;
display: flex;
flex-direction: column;
justify-content: space-between;
&-price-container {
&-value {
font-size: 40rpx;
}
}
}
}
&-right-box {
background-color: rgb(250, 250, 250);
}
}
</style>