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

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<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>