<template>
  <transition name="msgbox-fade">
    <div class="ls-mask" v-if="myShow">
      <div class="ls-mask-window" :class="isMain ? 'mainCenter' : 'contentCenter'" :style="{ 'width': width }">
        <div class="ls-head">
          <div class="ls-title" :style="{ 'text-align': titleStyle }">
            <svg-icon v-if="iconClass != ''" :icon-class='iconClass' />
            <b>{{ title }}</b>
          </div>
          <svg-icon icon-class='close' class="closeStyle" @click="onCancel" />
        </div>
        <div class="mask-content" ref='contentRef' :style="{ 'height': contentHeight }">
          <component :is="editItem" ref='childRef' :key="key" :formData='formData' />
        </div>
        <div class="ls-mask-footer" v-if='btnShow'>
          <el-button type="primary" @click="onConfirm">{{ confirmText }}</el-button>
          <el-button @click="onCancel">{{ cancelText }}</el-button>
        </div>
      </div>
    </div>
  </transition>
</template>
<script>
  import Popup1 from './index'
  export default {
    name: 'index',
    data () {
      return {
        title: '标题',
        editItem: "",
        isMain: false,
        formData: undefined,//父组件传递的参数 负责传给子组件
        btnShow: false,
        cancel: function () { },
        confirm: function () { },
        cancelText: '取消',
        confirmText: '确认',
        isSync: false,
        isShow: false,
        myShow: false,
        titleStyle: 'center',
        width: "75%",
        height: "auto",
        contentHeight: "",
        iconClass: "",
        key: 0
      }
    },
    watch: {
      isShow (newValue) {
        this.$nextTick(() => {
          this.editItem = this.loadViewFn(this.editItem)
          document.body.appendChild(this.$el);
          this.myShow = newValue
        })
      }
    },
    mounted () {
      //  计算滚动条高度
      setTimeout(() => {
        if (this.btnShow) {
          if (this.height == 'auto') {
            this.contentHeight = (this.$refs.contentRef.offsetHeight) + 'px'
          } else {
            this.contentHeight = this.height
          }
        } else {
          if (this.height == 'auto') {
            this.contentHeight = (this.$refs.contentRef.offsetHeight) + 'px'
          } else {
            this.contentHeight = this.height
          }
        }
      }, 300)
    },
    methods: {
      onCancel () {
        Popup1().close()
      },
      onConfirm () {
        let res = new Promise((resolve, reject) => {
          this.confirm()
          resolve(true)
        })
        if (res) {
          this.isShow = false
        }
      },
      loadViewFn (view) {
        return (r) =>
          require.ensure([], () =>
            r(require(`@/views/${view}.vue`))
          )
      }
    },
    destroyed () {
      if (this.appendToBody && this.$el && this.$el.parentNode) {
        this.$el.parentNode.removeChild(this.$el);
      }
    }
  }
</script>
<style scoped lang="scss" >
  @import "~@/styles/mixin.scss";
  @import "~@/styles/dialogBox.scss";

  .ls-mask {
    width: 100%;
    height: 100%;
    z-index: 500;
    position: fixed;
    left: 0;
    top: 0;
    background: rgba(0, 0, 0, 0.3);
  }

  .ls-mask-window {
    background: white;
    position: relative;
    left: 50%;
    top: 50%;
    min-height: 200px;
    transform: translate(-50%, -50%);
    border-radius: 5px;
    overflow: hidden;
  }

  .ls-mask-window b {
    padding-left: 5px;
  }

  .ls-title {
    padding: 16px;
    color: #ffffff;
    background: linear-gradient(3deg, #409eff, #a7cbee);
    font-size: 16px;
  }

  .ls-title .svg-icon {
    font-size: 18px;
  }

  .mask-content {
    padding: 20px;
    width: 100%;
    min-height: 30%;
    max-height: 90vh;
    overflow-y: scroll;
  }

  .ls-mask-footer {
    height: 50px;
    display: flex;
    justify-content: center;
    width: 100%;
    position: absolute;
    border-top: 1px solid $borderColor;
    bottom: 0;
    background: #ffffff;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    overflow: hidden;
  }

  /deep/.closeStyle {
    position: absolute;
    top: 13px;
    right: 26px;
    font-size: 24px;
    cursor: pointer;
    color: #409eff;
  }

  /deep/.el-loading-mask {
    background: none;
  }

  .dialog-fade-enter-active,
  .dialog-fade-leave-active {
    transition: opacity 0.3s;
  }

  .dialog-fade-enter,
  .dialog-fade-leave-to {
    opacity: 0;
  }
</style>