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<template>
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<view class="u-popup">
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<u-overlay
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:show="show"
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@click="overlayClick"
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v-if="overlay"
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:duration="overlayDuration"
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:customStyle="overlayStyle"
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:opacity="overlayOpacity"
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></u-overlay>
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<u-transition
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:show="show"
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:customStyle="transitionStyle"
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:mode="position"
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:duration="duration"
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@afterEnter="afterEnter"
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@click="clickHandler"
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>
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<view
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class="u-popup__content"
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:style="[contentStyle]"
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@tap.stop="noop"
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>
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<u-status-bar v-if="safeAreaInsetTop"></u-status-bar>
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<slot></slot>
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<view
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v-if="closeable"
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@tap.stop="close"
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class="u-popup__content__close"
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:class="['u-popup__content__close--' + closeIconPos]"
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hover-class="u-popup__content__close--hover"
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hover-stay-time="150"
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>
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<u-icon
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name="close"
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color="#909399"
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size="18"
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bold
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></u-icon>
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</view>
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<u-safe-bottom v-if="safeAreaInsetBottom"></u-safe-bottom>
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</view>
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</u-transition>
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</view>
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</template>
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<script>
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import props from './props.js';
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/**
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* popup 弹窗
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* @description 弹出层容器，用于展示弹窗、信息提示等内容，支持上、下、左、右和中部弹出。组件只提供容器，内部内容由用户自定义
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* @tutorial https://www.uviewui.com/components/popup.html
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* @property {Boolean} show 是否展示弹窗 (默认 false )
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* @property {Boolean} overlay 是否显示遮罩 （默认 true ）
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* @property {String} mode 弹出方向（默认 'bottom' ）
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* @property {String | Number} duration 动画时长，单位ms （默认 300 ）
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* @property {String | Number} overlayDuration 遮罩层动画时长，单位ms （默认 350 ）
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* @property {Boolean} closeable 是否显示关闭图标（默认 false ）
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* @property {Object | String} overlayStyle 自定义遮罩的样式
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* @property {String | Number} overlayOpacity 遮罩透明度，0-1之间（默认 0.5）
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* @property {Boolean} closeOnClickOverlay 点击遮罩是否关闭弹窗 （默认 true ）
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* @property {String | Number} zIndex 层级 （默认 10075 ）
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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} safeAreaInsetTop 是否留出顶部安全距离（状态栏高度） （默认 false ）
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* @property {String} closeIconPos 自定义关闭图标位置（默认 'top-right' ）
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* @property {String | Number} round 圆角值（默认 0）
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* @property {Boolean} zoom 当mode=center时 是否开启缩放（默认 true ）
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* @property {Object} customStyle 组件的样式，对象形式
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* @event {Function} open 弹出层打开
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* @event {Function} close 弹出层收起
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* @example <u-popup v-model="show"><text>出淤泥而不染，濯清涟而不妖</text></u-popup>
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*/
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export default {
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name: 'u-popup',
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
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data() {
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return {
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overlayDuration: this.duration + 50
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}
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},
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watch: {
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show(newValue, oldValue) {
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if (newValue === true) {
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// #ifdef MP-WEIXIN
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const children = this.$children
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this.retryComputedComponentRect(children)
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// #endif
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}
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}
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},
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computed: {
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transitionStyle() {
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const style = {
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zIndex: this.zIndex,
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position: 'fixed',
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display: 'flex',
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}
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style[this.mode] = 0
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if (this.mode === 'left') {
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return uni.$u.deepMerge(style, {
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bottom: 0,
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top: 0,
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})
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} else if (this.mode === 'right') {
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return uni.$u.deepMerge(style, {
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bottom: 0,
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top: 0,
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})
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} else if (this.mode === 'top') {
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return uni.$u.deepMerge(style, {
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left: 0,
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right: 0
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})
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} else if (this.mode === 'bottom') {
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return uni.$u.deepMerge(style, {
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left: 0,
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right: 0,
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})
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} else if (this.mode === 'center') {
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return uni.$u.deepMerge(style, {
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alignItems: 'center',
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'justify-content': 'center',
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top: 0,
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left: 0,
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right: 0,
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bottom: 0
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})
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}
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},
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contentStyle() {
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const style = {}
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// 通过设备信息的safeAreaInsets值来判断是否需要预留顶部状态栏和底部安全局的位置
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// 不使用css方案，是因为nvue不支持css的iPhoneX安全区查询属性
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const {
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safeAreaInsets
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} = uni.$u.sys()
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if (this.mode !== 'center') {
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style.flex = 1
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}
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// 背景色，一般用于设置为transparent，去除默认的白色背景
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if (this.bgColor) {
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style.backgroundColor = this.bgColor
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}
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if(this.round) {
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const value = uni.$u.addUnit(this.round)
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if(this.mode === 'top') {
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style.borderBottomLeftRadius = value
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style.borderBottomRightRadius = value
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} else if(this.mode === 'bottom') {
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style.borderTopLeftRadius = value
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style.borderTopRightRadius = value
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} else if(this.mode === 'center') {
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style.borderRadius = value
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}
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}
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return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
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},
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position() {
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if (this.mode === 'center') {
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return this.zoom ? 'fade-zoom' : 'fade'
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}
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if (this.mode === 'left') {
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return 'slide-left'
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}
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if (this.mode === 'right') {
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return 'slide-right'
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}
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if (this.mode === 'bottom') {
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return 'slide-up'
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}
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if (this.mode === 'top') {
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return 'slide-down'
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}
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},
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},
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methods: {
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// 点击遮罩
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overlayClick() {
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if (this.closeOnClickOverlay) {
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this.$emit('close')
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}
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},
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close(e) {
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this.$emit('close')
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},
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afterEnter() {
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this.$emit('open')
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},
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clickHandler() {
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// 由于中部弹出时，其u-transition占据了整个页面相当于遮罩，此时需要发出遮罩点击事件，是否无法通过点击遮罩关闭弹窗
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if(this.mode === 'center') {
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this.overlayClick()
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}
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this.$emit('click')
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},
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// #ifdef MP-WEIXIN
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retryComputedComponentRect(children) {
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// 组件内部需要计算节点的组件
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const names = ['u-calendar-month', 'u-album', 'u-collapse-item', 'u-dropdown', 'u-index-item', 'u-index-list',
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'u-line-progress', 'u-list-item', 'u-rate', 'u-read-more', 'u-row', 'u-row-notice', 'u-scroll-list',
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'u-skeleton', 'u-slider', 'u-steps-item', 'u-sticky', 'u-subsection', 'u-swipe-action-item', 'u-tabbar',
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'u-tabs', 'u-tooltip'
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]
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// 历遍所有的子组件节点
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for (let i = 0; i < children.length; i++) {
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const child = children[i]
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// 拿到子组件的子组件
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const grandChild = child.$children
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// 判断如果在需要重新初始化的组件数组中名中，并且存在init方法的话，则执行
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if (names.includes(child.$options.name) && typeof child?.init === 'function') {
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// 需要进行一定的延时，因为初始化页面需要时间
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uni.$u.sleep(50).then(() => {
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child.init()
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})
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}
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// 如果子组件还有孙组件，进行递归历遍
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if (grandChild.length) {
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this.retryComputedComponentRect(grandChild)
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}
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}
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}
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// #endif
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}
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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$u-popup-flex:1 !default;
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$u-popup-content-background-color: #fff !default;
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.u-popup {
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flex: $u-popup-flex;
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&__content {
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background-color: $u-popup-content-background-color;
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position: relative;
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&--round-top {
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border-top-left-radius: 0;
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border-top-right-radius: 0;
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border-bottom-left-radius: 10px;
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border-bottom-right-radius: 10px;
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}
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&--round-left {
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border-top-left-radius: 0;
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border-top-right-radius: 10px;
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border-bottom-left-radius: 0;
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border-bottom-right-radius: 10px;
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}
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&--round-right {
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border-top-left-radius: 10px;
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border-top-right-radius: 0;
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border-bottom-left-radius: 10px;
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border-bottom-right-radius: 0;
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}
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&--round-bottom {
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border-top-left-radius: 10px;
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border-top-right-radius: 10px;
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border-bottom-left-radius: 0;
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border-bottom-right-radius: 0;
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}
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&--round-center {
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border-top-left-radius: 10px;
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border-top-right-radius: 10px;
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border-bottom-left-radius: 10px;
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border-bottom-right-radius: 10px;
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}
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&__close {
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position: absolute;
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&--hover {
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opacity: 0.4;
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}
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}
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&__close--top-left {
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top: 15px;
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left: 15px;
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}
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&__close--top-right {
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top: 15px;
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right: 15px;
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}
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&__close--bottom-left {
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bottom: 15px;
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left: 15px;
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}
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&__close--bottom-right {
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right: 15px;
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bottom: 15px;
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}
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}
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}
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</style>
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