139 lines
2.9 KiB
Vue
139 lines
2.9 KiB
Vue
<template>
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<view class="tabs-wrapper">
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<view
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class="tabs_box"
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:style="{
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height: props.height + 'rpx',
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lineHeight: props.height + 'rpx'
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}"
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>
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<view
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v-for="(item, index) in tabs"
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:key="index"
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@tap="handleTabs(item)"
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class="tabs_items"
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:class="{
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active: item.value === currentActiveValue,
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line: showBottomLine && item.value === currentActiveValue
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}"
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>
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{{ item.label }}
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</view>
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</view>
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</view>
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</template>
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<script setup lang="ts">
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import { ref, computed, watch } from 'vue'
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// 标签项类型
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interface TabItem {
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label: string
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value: string | number
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}
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// Props 类型定义
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interface Props {
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tabslist?: any[]
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height?: number
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showBottomLine?: boolean
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// 配置：传入字段名
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options?: {
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label: string
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value: string
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}
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activeValue?: string | number
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}
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// 定义 Props
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const props = withDefaults(defineProps<Props>(), {
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tabslist: () => [],
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height: 60,
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showBottomLine: true,
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options: () => ({ label: 'name', value: 'value' }),
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activeValue: null
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})
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// ======================
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// 格式化 tabs 数据（核心）
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// ======================
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const tabs = computed<TabItem[]>(() => {
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const { tabslist, options } = props
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if (!tabslist || tabslist.length === 0) return []
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return tabslist.map(item => ({
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label: item[options.label],
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value: item[options.value]
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}))
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})
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// ======================
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// 当前激活值（响应式 + 可同步父组件更新）
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// ======================
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const currentActiveValue = ref<string | number>('')
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// 初始化 + 父组件传值变化时自动同步（核心修复）
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watch(
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() => props.activeValue,
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newVal => {
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if (newVal !== null && newVal !== undefined) {
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currentActiveValue.value = newVal
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} else {
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// 没有传默认值 → 选中第一个
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currentActiveValue.value = tabs.value[0]?.value
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}
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},
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{ immediate: true } // 一进页面就执行
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)
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// 事件
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const emit = defineEmits<{
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update: [value: string | number]
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}>()
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// 点击切换
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const handleTabs = (item: TabItem) => {
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currentActiveValue.value = item.value
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emit('update', item.value)
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}
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</script>
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<style lang="scss" scoped>
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.tabs-wrapper {
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flex-shrink: 0; /* 关键：不让被压缩 */
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}
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.tabs_box {
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height: 80rpx;
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line-height: 80rpx;
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width: 100%;
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display: flex;
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align-items: center;
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overflow-y: hidden;
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overflow-x: auto;
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.tabs_items {
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flex-shrink: 0;
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margin-right: 60rpx;
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font-size: 28rpx;
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color: #222222;
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position: relative;
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&.active {
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color: #4d5dfa;
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&.line {
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&::after {
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content: '';
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display: block;
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width: 100%;
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height: 8rpx;
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background: linear-gradient(180deg, #4d5dfa 0%, #bac0fa 100%);
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border-radius: 4rpx;
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position: absolute;
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left: 0;
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bottom: 0;
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}
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}
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}
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}
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}
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</style>
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