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