// 在main.js中全局引入
import { createApp } from 'vue'
import App from './App.vue'
 
// 引入弹窗组件v3popup
import V3Popup from './components/v3popup'
 
createApp(App).use(V3Popup).mount('#app')

<!-- 提示框 -->
<v3-popup v-model="showMsg" anim="fadeIn" content="msg提示框测试（3s后窗口关闭）" shadeClose="false" time="3" />
 
<!-- 询问框 -->
<v3-popup v-model="showConfirm" shadeClose="false" title="标题" xclose z-index="2020"
 content="<div style='color:#1be769;padding:20px;'>确认框（这里是确认框提示信息，这里确认框提示信息，这里是确认框提示信息）</div>"
 :btns="[
  {text: '取消', click: () => showConfirm=false},
  {text: '确定', style: 'color:#f90;', click: handleInfo},
 ]"
/>

// 函数式调用
let $el = this.$v3popup({
 title: '标题',
 content: '<div style='color:#f90;padding:10px;'>这里是内容信息！</div>',
 type: 'android',
 shadeClose: false,
 xclose: true,
 btns: [
  {text: '取消', click: () => { $el.close(); }},
  {text: '确认', style: 'color:#f90;', click: () => handleOK},
 ],
 onSuccess: () => {},
 onEnd: () => {}
})

// vue2中调用
methods: {
 showDialog() {
  this.$v3popup({...})
 }
}
 
// vue3中调用
setup() {
 // 获取上下文
 const { ctx } = getCurrentInstance()
 ctx.$v3popup({...})
}

// vue2中调用
methods: {
 showDialog() {
  this.v3popup({...})
 }
}
 
// vue3中调用
setup() {
 const v3popup = inject('v3popup')
 
 const showDialog = () => {
  v3popup({...})
 }
 
 return {
  v3popup,
  showDialog
 }
}

|props参数|
v-model   是否显示弹框
title   标题
content   内容（支持String、带标签内容、自定义插槽内容）***如果content内容比较复杂，推荐使用标签式写法
type   弹窗类型（toast | footer | actionsheet | actionsheetPicker | android | ios）
popupStyle  自定义弹窗样式
icon   toast图标（loading | success | fail）
shade   是否显示遮罩层
shadeClose  是否点击遮罩时关闭弹窗
opacity   遮罩层透明度
round   是否显示圆角
xclose   是否显示关闭图标
xposition  关闭图标位置（left | right | top | bottom）
xcolor   关闭图标颜色
anim   弹窗动画（scaleIn | fadeIn | footer | fadeInUp | fadeInDown）
position  弹出位置（top | right | bottom | left）
follow   长按/右键弹窗（坐标点）
time   弹窗自动关闭秒数（1、2、3）
zIndex   弹窗层叠（默认8080）
teleport  指定挂载节点（默认是挂载组件标签位置，可通过teleport自定义挂载位置） teleport="body | #xxx | .xxx"
btns   弹窗按钮（参数：text|style|disabled|click）
++++++++++++++++++++++++++++++++++++++++++++++
|emit事件触发|
success   层弹出后回调（@success="xxx"）
end    层销毁后回调（@end="xxx"）
++++++++++++++++++++++++++++++++++++++++++++++
|event事件|
onSuccess  层打开回调事件
onEnd   层关闭回调事件

<template>
 <div ref="elRef" v-show="opened" class="vui__popup" :class="{'vui__popup-closed': closeCls}" :id="id">
  <!-- //蒙层 -->
  <div v-if="JSON.parse(shade)" class="vui__overlay" @click="shadeClicked" :style="{opacity}"></div>
  <div class="vui__wrap">
   <div class="vui__wrap-section">
    <div class="vui__wrap-child" :class="['anim-'+anim, type&&'popupui__'+type, round&&'round', position]" :style="[popupStyle]">
     <div v-if="title" class="vui__wrap-tit" v-html="title"></div>
     <div v-if="type=='toast'&&icon" class="vui__toast-icon" :class="['vui__toast-'+icon]" v-html="toastIcon[icon]"></div>
     <!-- 判断插槽是否存在 -->
     <template v-if="$slots.content">
      <div class="vui__wrap-cnt"><slot name="content" /></div>
     </template>
     <template v-else>
      <div v-if="content" class="vui__wrap-cnt" v-html="content"></div>
     </template>
     <slot />
     <div v-if="btns" class="vui__wrap-btns">
      <span v-for="(btn, index) in btns" :key="index" class="btn" :style="btn.style" @click="btnClicked($event, index)" v-html="btn.text"></span>
     </div>
     <span v-if="xclose" class="vui__xclose" :class="xposition" :style="{'color': xcolor}" @click="close"></span>
    </div>
   </div>
  </div>
 </div>
</template>
 
/**
 * @Desc  Vue3自定义弹出层组件V3Popup
 * @Time  andy by 2020-12
 * @About Q：282310962 wx：xy190310
 */
<script>
 import { onMounted, ref, reactive, watch, toRefs, nextTick } from 'vue'
 let $index = 0, $locknum = 0, $timer = {}
 export default {
  props: {
   // 接收父组件v-model值，如果v-model:open，则这里需写open: {...}
   modelValue: { type: Boolean, default: false },
   // 标识符，相同ID共享一个实例
   id: {
    type: String, default: ''
   },
   title: String,
   content: String,
   type: String,
   popupStyle: String,
   icon: String,
   shade: { type: [Boolean, String], default: true },
   shadeClose: { type: [Boolean, String], default: true },
   opacity: { type: [Number, String], default: '' },
   round: Boolean,
   xclose: Boolean,
   xposition: { type: String, default: 'right' },
   xcolor: { type: String, default: '#333' },
   anim: { type: String, default: 'scaleIn' },
   position: String,
   follow: { type: Array, default: null },
   time: { type: [Number, String], default: 0 },
   zIndex: { type: [Number, String], default: '8080' },
   teleport: [String, Object],
   btns: {
    type: Array, default: null
   },
   onSuccess: { type: Function, default: null },
   onEnd: { type: Function, default: null },
  },
  emits: [
   'update:modelValue'
  ],
  setup(props, context) {
   const elRef = ref(null)
 
   const data = reactive({
    opened: false,
    closeCls: '',
    toastIcon: {
     ...
    }
   })
 
   onMounted(() => {
    ...
   })
 
   // 监听弹层v-model
   watch(() => props.modelValue, (val) => {
    if(val) {
     open()
    }else {
     close()
    }
   })
 
   // 打开弹层
   const open = () => {
    if(data.opened) return
    data.opened = true
    typeof props.onSuccess === 'function' && props.onSuccess()
 
    const dom = elRef.value
    dom.style.zIndex = getZIndex() + 1
 
    ...
 
    // 倒计时
    if(props.time) {
     $index++
     // 避免重复操作
     if($timer[$index] !== null) clearTimeout($timer[$index])
     $timer[$index] = setTimeout(() => {
      close()
     }, parseInt(props.time) * 1000)
    }
 
    // 长按|右键菜单
    if(props.follow) {
     ...
    }
   }
 
   // 关闭弹层
   const close = () => {
    if(!data.opened) return
 
    data.closeCls = true
    setTimeout(() => {
     ...
 
     context.emit('update:modelValue', false)
     typeof props.onEnd === 'function' && props.onEnd()
    }, 200)
   }
 
   // 点击遮罩层
   const shadeClicked = () => {
    if(JSON.parse(props.shadeClose)) {
     close()
    }
   }
   // 按钮事件
   const btnClicked = (e, index) => {
    let btn = props.btns[index];
    if(!btn.disabled) {
     typeof btn.click === 'function' && btn.click(e)
    }
   }
   
   ...
 
   return {
    ...toRefs(data),
    elRef,
    close,
    shadeClicked,
    btnClicked,
   }
  }
 }
</script>

import { createApp } from 'vue'
import PopupConstructor from './popup.vue'
 
let $inst
// 创建挂载实例
let createMount = (opts) => {
 const mountNode = document.createElement('div')
 document.body.appendChild(mountNode)
 
 const app = createApp(PopupConstructor, {
  ...opts, modelValue: true,
  remove() {
   app.unmount(mountNode)
   document.body.removeChild(mountNode)
  }
 })
 return app.mount(mountNode)
}
 
function V3Popup(options = {}) {
 options.id = options.id || 'v3popup_' + generateId()
 $inst = createMount(options)
 
 return $inst
}
 
V3Popup.install = app => {
 app.component('v3-popup', PopupConstructor)
 // app.config.globalProperties.$v3popup = V3Popup
 app.provide('v3popup', V3Popup)
}