yshop意向点餐系统v1.2.2
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export default {
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props: {
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// 当前匹配项的name
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value: {
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type: [String, Number, null],
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default: null
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},
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// 是否为iPhoneX留出底部安全距离
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safeAreaInsetBottom: {
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type: Boolean,
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default: true
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},
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// 是否显示上方边框
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border: {
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type: Boolean,
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default: true
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},
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// 元素层级z-index
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zIndex: {
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type: [String, Number],
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default: 9
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},
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// 选中标签的颜色
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activeColor: {
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type: String,
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default: '#1989fa'
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},
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// 未选中标签的颜色
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inactiveColor: {
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type: String,
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default: '#7d7e80'
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},
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// 是否固定在底部
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fixed: {
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type: Boolean,
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default: true
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},
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// fixed定位固定在底部时，是否生成一个等高元素防止塌陷
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placeholder: {
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type: Boolean,
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default: true
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},
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// 图标大小
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iconSize: {
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type: [String, Number],
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default: 20
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},
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...uni.$uv?.props?.tabbar
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}
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}
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@@ -0,0 +1,146 @@
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<template>
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<view class="uv-tabbar">
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<view
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class="uv-tabbar__content"
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ref="uv-tabbar__content"
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@touchmove.stop.prevent="noop"
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:class="[border && 'uv-border-top', fixed && 'uv-tabbar--fixed']"
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:style="[tabbarStyle]"
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>
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<view class="uv-tabbar__content__item-wrapper">
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<slot />
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</view>
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<uv-safe-bottom v-if="safeAreaInsetBottom"></uv-safe-bottom>
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</view>
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<view
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class="uv-tabbar__placeholder"
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v-if="placeholder"
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:style="{
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height: placeholderHeight + 'px',
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}"
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></view>
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</view>
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</template>
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<script>
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import mpMixin from '@/uni_modules/uv-ui-tools/libs/mixin/mpMixin.js'
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import mixin from '@/uni_modules/uv-ui-tools/libs/mixin/mixin.js'
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import props from './props.js';
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// #ifdef APP-NVUE
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const dom = uni.requireNativePlugin('dom')
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// #endif
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/**
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* Tabbar 底部导航栏
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* @description 此组件提供了自定义tabbar的能力。
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* @tutorial https://www.uvui.cn/components/tabbar.html
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* @property {String | Number} value 当前匹配项的name
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* @property {Boolean} safeAreaInsetBottom 是否为iPhoneX留出底部安全距离（默认 true ）
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* @property {Boolean} border 是否显示上方边框（默认 true ）
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* @property {String | Number} zIndex 元素层级z-index（默认 1 ）
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* @property {String} activeColor 选中标签的颜色（默认 '#1989fa' ）
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* @property {String} inactiveColor 未选中标签的颜色（默认 '#7d7e80' ）
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* @property {Boolean} fixed 是否固定在底部（默认 true ）
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* @property {Boolean} placeholder fixed定位固定在底部时，是否生成一个等高元素防止塌陷（默认 true ）
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* @property {Object} customStyle 定义需要用到的外部样式
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*
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* @example <uv-tabbar :value="value2" :placeholder="false" @change="name => value2 = name" :fixed="false" :safeAreaInsetBottom="false"><uv-tabbar-item text="首页" icon="home" dot ></uv-tabbar-item></uv-tabbar>
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*/
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export default {
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name: 'uv-tabbar',
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mixins: [mpMixin, mixin, props],
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data() {
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return {
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placeholderHeight: 0
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}
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},
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computed: {
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tabbarStyle() {
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const style = {
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zIndex: this.zIndex
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}
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// 合并来自父组件的customStyle样式
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return this.$uv.deepMerge(style, this.$uv.addStyle(this.customStyle))
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},
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// 监听多个参数的变化，通过在computed执行对应的操作
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updateChild() {
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return [this.value, this.activeColor, this.inactiveColor]
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},
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updatePlaceholder() {
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return [this.fixed, this.placeholder]
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}
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},
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watch: {
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updateChild() {
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// 如果updateChildren中的元素发生了变化，则执行子元素初始化操作
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this.updateChildren()
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},
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updatePlaceholder() {
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// 如果fixed，placeholder等参数发生变化，重新计算占位元素的高度
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this.setPlaceholderHeight()
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}
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},
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created() {
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this.children = []
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},
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mounted() {
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this.setPlaceholderHeight()
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},
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methods: {
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updateChildren() {
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// 如果存在子元素，则执行子元素的updateFromParent进行更新数据
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this.children.length && this.children.map(child => child.updateFromParent())
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},
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// 设置用于防止塌陷元素的高度
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async setPlaceholderHeight() {
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if (!this.fixed || !this.placeholder) return
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// 延时一定时间
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await this.$uv.sleep(20)
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// #ifndef APP-NVUE
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this.$uvGetRect('.uv-tabbar__content').then(({height = 50}) => {
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// 修复IOS safearea bottom 未填充高度
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this.placeholderHeight = height
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})
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// #endif
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// #ifdef APP-NVUE
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dom.getComponentRect(this.$refs['uv-tabbar__content'], (res) => {
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const {
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size
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} = res
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this.placeholderHeight = size.height
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})
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// #endif
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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$show-border: 1;
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$show-border-top: 1;
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@import '@/uni_modules/uv-ui-tools/libs/css/variable.scss';
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@import '@/uni_modules/uv-ui-tools/libs/css/components.scss';
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@import '@/uni_modules/uv-ui-tools/libs/css/color.scss';
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.uv-tabbar {
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@include flex(column);
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flex: 1;
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justify-content: center;
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&__content {
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@include flex(column);
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background-color: #fff;
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&__item-wrapper {
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height: 50px;
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@include flex(row);
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}
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}
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&--fixed {
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position: fixed;
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bottom: 0;
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left: 0;
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right: 0;
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}
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}
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</style>
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