<template>
  <!-- 菜单下载/预览/删除 -->
  <div class="menuPopover" :class="menuStyle" @mouseover="mouseover" @mouseout="mouseout">

    <el-popover placement="top-start" title="" trigger="hover" popper-class="popperClass"
      >
      <div class="menuList" >
        <div v-for="item in menuList" :key="item.value"  @click="menuBtn(item)" class="menuListLi" v-show="item.show">
          <i :class="item.icon"></i><span>{{item.label}}</span>
        </div>
      </div>
      <div slot="reference" class="menu-button">
        <div class="line-box">
          <div class="line"></div>
          <div class="line"></div>
          <div class="line"></div>
        </div>
      </div>
    </el-popover>

  </div>
</template>
<script>

import { File } from './mixins'
export default {
  props: {
    data: {
      type: Object,
      default: () => {
        return {}
      }
    },
    deleted: {
      type: Boolean,
      default:true
    }
  },
  mixins: [File],
  data() {
    return {
      menuStyle: 'menu-box',
      active: false,
      menuList: [
        {value:'downLoad',label:'下载',icon:'el-icon-download',show:true},
        {value:'preview',label:'预览',icon:'el-icon-view',show:true},
        {value:'delFile',label:'删除',icon:'el-icon-delete',show:this.deleted},
      ]
    }
  },
  watch: {
    deleted(val) {
      this.menuList.forEach(item => {
        if (item.value == 'delFile') {
          item.show = val
          return false
        }
      })
    }
  },
  methods: {
    menuBtn(item) {
      var data =this.data
      switch (item.value) {
        case 'downLoad':
          this.downLoad(data)
          break;
        case 'preview':
          this.preview(data)
          break;
        case 'delFile':
          this.delFile(data)
          break;
      
        default:
          break;
      }
    },
    mouseover() {
      this.menuStyle = 'active'
      this.active = true
    },
    mouseout() {
      this.menuStyle = ''
      this.active = false
    },

  }
}
</script>
<style >
.el-popover.popperClass {
  min-width: 80px ;
  border: 1px solid #ACA9A9;
}
.el-popper[x-placement^=top] .popper__arrow::after{
  border-top-color: #7f7f7f;
  bottom: 0px;
}
</style>
<style lang="scss" scoped>
.menuList :first-child{
  padding-top: 0px;
}
.menuList :hover{
  color: #5c67ff;
  cursor: pointer;
}

.menuListLi{
  text-align: center;
  border-bottom: 1px solid #e6e6e6;
  padding: 10px 0 3px 0;
}
.menuListLi :first-child{
  padding-right: 5px;
}
.menu-button {
  width: 25px;
  height: 25px;
  background-color: white;
  border-radius: 50%;
  // box-shadow: 0 0 0 4px rgba(92,103,255,0.3);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;

  cursor: pointer;
  transition: 0.2s ease-in;
}

.menu-button:hover {
  background-color: white;
  z-index: 999;
  // box-shadow: 0 0 0 8px rgba(92,103,255,0.3);
}

.menu-button .line-box {
  width: 10px;
  height: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: transform 0.3s ease-out;
}

.menu-button .line {
  background-color: black;
  width: 100%;
  height: 2px;
  border-radius: 2px;
}

.menu-button .line:first-child {
  width: 50%;
  transform-origin: right;
  transition: transform 0.3s ease-in-out;
}

.menu-button .line:last-child {
  width: 50%;
  align-self: flex-end;
  transform-origin: left;
  transition: transform 0.3s ease-in-out;
}

// .menu-list1 {
//   padding: 6px;
//   transition: 0.3s ease;
//   transition: delay 0.3s;

// }

// .menu-list1 li {
//   display: flex;
//   justify-content: center;
//   align-items: center;
//   padding: 10px;
//   color: #343470;
//   cursor: pointer;
//   position: relative;
//   opacity: 1;
//   transform: translateX(-10px);
//   transition: 0.2s ease-in;
// }

// .menu-list1 li:hover {
//   color: #5c67ff;
// }

.menu-list1 li::before {
  content: '';
  width: calc(100% - 24px);
  height: 1px;
  background-color: rgba(92, 103, 255, 0.1);
  position: absolute;
  bottom: 0;
  left: 12px;
}

.menu-list1 li:last-child::before {
  display: none;
}

// .menu-list1 .fa {
//   font-size: 18px;
//   width: 18px;
//   height: 18px;
//   display: flex;
//   justify-content: center;
//   align-items: center;
// }

// .menu-list1 span {
//   font-size: 14px;
//   margin-left: 8px;
// }

.active {
  position: relative;
}

.active .line-box {
  transform: rotate(-45deg);
}

.active .line-box .line:first-child {
  transform: rotate(-90deg) translateX(1px);
}

.active .line-box .line:last-child {
  transform: rotate(-90deg) translateX(-1px);
}

.active .menu-list {
  margin: 0;
  opacity: 1;
  transform: scale(1);
}

.active .menu-list li {
  animation: fade-in-item 0.4s linear forwards;
}

.active .menu-list li:nth-child(1) {
  animation-delay: 0.1s;
}

.active .menu-list li:nth-child(2) {
  animation-delay: 0.2s;
}

.active .menu-list li:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes fade-in-item {
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}</style>