u-popup.vue 8.36 KB
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<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>