自定义右键菜单

太过爱你忘了你带给我的痛 2023-01-16 02:37 168阅读 0赞

![在这里插入图片描述][20210423113622999.png]

<template>
      <div class="tree">
        <span class="tree-item" v-for="(item, index) in tree" :key="index" @contextmenu.prevent="openMenu(item, $event)">
          {
       { item.name }}
        </span>
        <div class="popover" :style="style" v-if="isShowPopover">
          <div v-for="(item, index) in popoverList" :key="index" class="popover-item" @click="menuClick(item)">
            <i :class="'el-icon-' + item.type"></i>
            {
       { item.name }}
          </div>
        </div>
      </div>
    </template>
    
    <script> export default { name: 'NotFound', computed: { // 计算出距离 style () { return { left: this.popoverLeft + 'px', top: this.popoverTop + 'px' } } }, data () { return { tree: [ { name: '一级1' }, { name: '一级2' } ], popoverLeft: 0, // 距离左边的距离 popoverTop: 0, // 距离顶部的距离 isShowPopover: true, // 是否展示右键内容 popoverList: [ { name: '新增', type: 'circle-plus-outline' }, { name: '编辑', type: 'edit' }, { name: '删除', type: 'delete' } ] } }, methods: { // 展开菜单 openMenu (item, event, index) { this.curItem = item this.curIndex = index // 判断窗口大小 const clientWidth = document.body.clientWidth const clientHeight = document.body.clientHeight // 鼠标右键边界值判断（100,178是右键菜单的宽高） if (event.clientX + 100 >= clientWidth) { this.popoverLeft = clientWidth - 100 } else { this.popoverLeft = event.clientX } if (event.clientY + 178 >= clientHeight) { this.popoverTop = clientHeight - 178 } else { this.popoverTop = event.clientY } this.isShowPopover = true // 显示自定义菜单栏 }, // 关闭菜单 closeMenu () { this.isShowPopover = false }, // 菜单某一项被点击 menuClick (row) { console.log(row) } }, watch: { // 目的: 为了在鼠标右键内容展示,点击其他地方隐藏鼠标右键内容 isShowPopover (val) { if (val) { document.body.addEventListener('click', this.closeMenu) } else { document.body.removeEventListener('click', this.closeMenu) } } } } </script>
    
    <style lang="scss" scoped> .tree { width: 100%; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; .tree-item { width: 200px; line-height: 40px; border: 1px solid red; text-align: center; margin-top: 10px; cursor: pointer; } .popover { width: 100px; height: auto; position: fixed; background: #fff; border: 1px solid #ddd; padding: 0 10px; box-shadow: 0 0 2px 0 #ccc; .popover-item { border-bottom: 1px solid #efefef; line-height: 35px; text-align: center; cursor: pointer; } .popover-item:last-child{ border-bottom: none; } } } </style>

[20210423113622999.png]: /images/20221022/cd729b2991034fd985e98b33f89fb155.png