pco/app/uni_modules/uni-popup/components/uni-popup/uni-popup.vue

<template>
  <view v-if="showPopup" class="uni-popup" :class="[popupstyle, isDesktop ? 'fixforpc-z-index' : '']"
        @touchmove.stop.prevent="clear">
    <view @touchstart="touchstart">
      <uni-transition key="1" v-if="maskShow" name="mask" mode-class="fade" :styles="maskClass" :duration="duration"
                      :show="showTrans" @click="onTap"/>
      <uni-transition key="2" :mode-class="ani" name="content" :styles="transClass" :duration="duration"
                      :show="showTrans" @click="onTap">
        <view class="uni-popup__wrapper" :style="{ backgroundColor: bg }" :class="[popupstyle]" @click="clear">
          <slot/>
        </view>
      </uni-transition>
    </view>
    <!-- #ifdef H5 -->
    <keypress v-if="maskShow" @esc="onTap"/>
    <!-- #endif -->
  </view>
</template>

<script>
// #ifdef H5
import keypress from './keypress.js'
// #endif

/**
 * PopUp 弹出层
 * @description 弹出层组件，为了解决遮罩弹层的问题
 * @tutorial https://ext.dcloud.net.cn/plugin?id=329
 * @property {String} type = [top|center|bottom|left|right|message|dialog|share] 弹出方式
 *  @value top 顶部弹出
 *  @value center 中间弹出
 *  @value bottom 底部弹出
 *  @value left    左侧弹出
 *  @value right  右侧弹出
 *  @value message 消息提示
 *  @value dialog 对话框
 *  @value share 底部分享示例
 * @property {Boolean} animation = [true|false] 是否开启动画
 * @property {Boolean} maskClick = [true|false] 蒙版点击是否关闭弹窗
 * @property {String}  backgroundColor          主窗口背景色
 * @property {Boolean} safeArea                  是否适配底部安全区
 * @event {Function} change 打开关闭弹窗触发，e={show: false}
 * @event {Function} maskClick 点击遮罩触发
 */

export default {
  name: 'uniPopup',
  components: {
    // #ifdef H5
    keypress
    // #endif
  },
  emits: ['change', 'maskClick'],
  props: {
    // 开启动画
    animation: {
      type: Boolean,
      default: true
    },
    // 弹出层类型，可选值，top: 顶部弹出层；bottom：底部弹出层；center：全屏弹出层
    // message: 消息提示 ; dialog : 对话框
    type: {
      type: String,
      default: 'center'
    },
    // maskClick
    maskClick: {
      type: Boolean,
      default: true
    },
    backgroundColor: {
      type: String,
      default: 'none'
    },
    safeArea: {
      type: Boolean,
      default: true
    }
  },

  watch: {
    /**
     * 监听type类型
     */
    type: {
      handler: function (type) {
        if (!this.config[type]) return
        this[this.config[type]](true)
      },
      immediate: true
    },
    isDesktop: {
      handler: function (newVal) {
        if (!this.config[newVal]) return
        this[this.config[this.type]](true)
      },
      immediate: true
    },
    /**
     * 监听遮罩是否可点击
     * @param {Object} val
     */
    maskClick: {
      handler: function (val) {
        this.mkclick = val
      },
      immediate: true
    }
  },
  data() {
    return {
      duration: 300,
      ani: [],
      showPopup: false,
      showTrans: false,
      popupWidth: 0,
      popupHeight: 0,
      config: {
        top: 'top',
        bottom: 'bottom',
        center: 'center',
        left: 'left',
        right: 'right',
        message: 'top',
        dialog: 'center',
        share: 'bottom'
      },
      maskClass: {
        position: 'fixed',
        bottom: 0,
        top: 0,
        left: 0,
        right: 0,
        backgroundColor: 'rgba(0, 0, 0, 0.4)'
      },
      transClass: {
        position: 'fixed',
        left: 0,
        right: 0
      },
      maskShow: true,
      mkclick: true,
      popupstyle: this.isDesktop ? 'fixforpc-top' : 'top'
    }
  },
  computed: {
    isDesktop() {
      return this.popupWidth >= 500 && this.popupHeight >= 500
    },
    bg() {
      if (this.backgroundColor === '' || this.backgroundColor === 'none') {
        return 'transparent'
      }
      return this.backgroundColor
    }
  },
  mounted() {
    const fixSize = () => {
      const {windowWidth, windowHeight, windowTop, safeAreaInsets} = uni.getSystemInfoSync()
      this.popupWidth = windowWidth
      this.popupHeight = windowHeight + windowTop
      // 是否适配底部安全区
      if (this.safeArea) {
        this.safeAreaInsets = safeAreaInsets
      } else {
        this.safeAreaInsets = 0
      }
    }
    fixSize()
    // #ifdef H5
    // window.addEventListener('resize', fixSize)
    // this.$once('hook:beforeDestroy', () => {
    // 	window.removeEventListener('resize', fixSize)
    // })
    // #endif
  },
  created() {
    this.mkclick = this.maskClick
    if (this.animation) {
      this.duration = 300
    } else {
      this.duration = 0
    }
    // TODO 处理 message 组件生命周期异常的问题
    this.messageChild = null
    // TODO 解决头条冒泡的问题
    this.clearPropagation = false
  },
  methods: {
    /**
     * 公用方法，不显示遮罩层
     */
    closeMask() {
      this.maskShow = false
    },
    /**
     * 公用方法，遮罩层禁止点击
     */
    disableMask() {
      this.mkclick = false
    },
    // TODO nvue 取消冒泡
    clear(e) {
      // #ifndef APP-NVUE
      e.stopPropagation()
      // #endif
      this.clearPropagation = true
    },

    open(direction) {
      let innerType = ['top', 'center', 'bottom', 'left', 'right', 'message', 'dialog', 'share']
      if (!(direction && innerType.indexOf(direction) !== -1)) {
        direction = this.type
      }
      if (!this.config[direction]) {
        console.error('缺少类型：', direction)
        return
      }
      this[this.config[direction]]()
      this.$emit('change', {
        show: true,
        type: direction
      })
    },
    close(type) {
      this.showTrans = false
      this.$emit('change', {
        show: false,
        type: this.type
      })
      clearTimeout(this.timer)
      // // 自定义关闭事件
      // this.customOpen && this.customClose()
      this.timer = setTimeout(() => {
        this.showPopup = false
      }, 300)
    },
    // TODO 处理冒泡事件，头条的冒泡事件有问题 ，先这样兼容
    touchstart() {
      this.clearPropagation = false
    },

    onTap() {
      if (this.clearPropagation) {
        // fix by mehaotian 兼容 nvue
        this.clearPropagation = false
        return
      }
      this.$emit('maskClick')
      if (!this.mkclick) return
      this.close()
    },
    /**
     * 顶部弹出样式处理
     */
    top(type) {
      this.popupstyle = this.isDesktop ? 'fixforpc-top' : 'top'
      this.ani = ['slide-top']
      this.transClass = {
        position: 'fixed',
        left: 0,
        right: 0,
        backgroundColor: this.bg
      }
      // TODO 兼容 type 属性 ，后续会废弃
      if (type) return
      this.showPopup = true
      this.showTrans = true
      this.$nextTick(() => {
        if (this.messageChild && this.type === 'message') {
          this.messageChild.timerClose()
        }
      })
    },
    /**
     * 底部弹出样式处理
     */
    bottom(type) {
      this.popupstyle = 'bottom'
      this.ani = ['slide-bottom']

      this.transClass = {
        position: 'fixed',
        left: 0,
        right: 0,
        bottom: 0,
        paddingBottom: (this.safeAreaInsets && this.safeAreaInsets.bottom) || 0,
        backgroundColor: this.bg
      }
      // TODO 兼容 type 属性 ，后续会废弃
      if (type) return
      this.showPopup = true
      this.showTrans = true
    },
    /**
     * 中间弹出样式处理
     */
    center(type) {
      this.popupstyle = 'center'
      this.ani = ['zoom-out', 'fade']
      this.transClass = {
        position: 'fixed',
        /* #ifndef APP-NVUE */
        display: 'flex',
        flexDirection: 'column',
        /* #endif */
        bottom: 0,
        left: 0,
        right: 0,
        top: 0,
        justifyContent: 'center',
        alignItems: 'center'
      }
      // TODO 兼容 type 属性 ，后续会废弃
      if (type) return
      this.showPopup = true
      this.showTrans = true
    },
    left(type) {
      this.popupstyle = 'left'
      this.ani = ['slide-left']
      this.transClass = {
        position: 'fixed',
        left: 0,
        bottom: 0,
        top: 0,
        backgroundColor: this.bg,
        /* #ifndef APP-NVUE */
        display: 'flex',
        flexDirection: 'column'
        /* #endif */
      }
      // TODO 兼容 type 属性 ，后续会废弃
      if (type) return
      this.showPopup = true
      this.showTrans = true
    },
    right(type) {
      this.popupstyle = 'right'
      this.ani = ['slide-right']
      this.transClass = {
        position: 'fixed',
        bottom: 0,
        right: 0,
        top: 0,
        backgroundColor: this.bg,
        /* #ifndef APP-NVUE */
        display: 'flex',
        flexDirection: 'column'
        /* #endif */
      }
      // TODO 兼容 type 属性 ，后续会废弃
      if (type) return
      this.showPopup = true
      this.showTrans = true
    }
  }
}
</script>
<style lang="scss">
.uni-popup {
  position: fixed;
  /* #ifndef APP-NVUE */
  z-index: 99;
  /* #endif */
  &.top,
  &.left,
  &.right {
    /* #ifdef H5 */
    top: var(--window-top);
    /* #endif */
    /* #ifndef H5 */
    top: 0;
    /* #endif */
  }

  .uni-popup__wrapper {
    /* #ifndef APP-NVUE */
    display: block;
    /* #endif */
    position: relative;
    /* iphonex 等安全区设置，底部安全区适配 */
    /* #ifndef APP-NVUE */
    // padding-bottom: constant(safe-area-inset-bottom);
    // padding-bottom: env(safe-area-inset-bottom);
    /* #endif */
    &.left,
    &.right {
      /* #ifdef H5 */
      padding-top: var(--window-top);
      /* #endif */
      /* #ifndef H5 */
      padding-top: 0;
      /* #endif */
      flex: 1;
    }
  }
}

.fixforpc-z-index {
  /* #ifndef APP-NVUE */
  z-index: 999;
  /* #endif */
}

.fixforpc-top {
  top: 0;
}
</style>