1、安装

npm install @xunlei/vue-context-menu

2、使用

<template>
    <div id="dataPage">
      <el-tree :data="treeData" id="el-tree" :props="defaultProps" @node-click="handleNodeClick"></el-tree>
      <VueContextMenu class="right-menu" :target="contextMenuTarget" :show="contextMenuVisible"  @update:show="(show) => contextMenuVisible = show">
        <a href="javascript:;" @click="createDatabaseOrTable">新建{{this.menuLabel}}</a>
        <a href="javascript:;" @click="deleteDatabaseOrTable">删除{{this.menuLabel}}</a>
        <a href="javascript:;" @click="attribute">属性</a>
        <a href="javascript:;" @click="exportDatabaseOrTable">导出{{this.menuLabel}}</a>
      </VueContextMenu>
    </div>
</template>

<script>
// 直接在组件中引入使用
import { component as VueContextMenu } from '@xunlei/vue-context-menu'

export default {
   components: {VueContextMenu },
   data() {
	returen {
	      treeData: [
		{
          label: '一级 1',
          children: [{
            label: '二级 1-1',
            children: [{
              label: '三级 1-1-1'
            }]
          }]
        },
      ],
      contextMenuTarget: null,
      contextMenuVisible: false,
      nodeData: {},
      defaultProps: {
        children: "children",
        label: "label",
      },
	}
	}
  },
  mounted(){

      this.$nextTick(() => {
        // vue-context-menu 需要传入一个触发右键事件的元素，等页面 dom 渲染完毕后才可获取
        this.contextMenuTarget = document.querySelector('#el-tree')
        // 获取所有的 treeitem，循环监听右键事件
        const tree = document.querySelectorAll('#el-tree [role="treeitem"]')
        tree.forEach(i => {
          i.addEventListener('contextmenu',event => {
            // 如果右键了，则模拟点击这个treeitem
            event.target.click()
          })
        })
      })
  },

    computed: {
      menuLabel() {
        return this.nodeData.children == null ? '表' : '数据库';
      }
    },

  methods: {

      handleNodeClick(data) {
        // console.log(data)
        this.nodeData = data
      },
      createDatabaseOrTable() {
        this.contextMenuVisible = false;
        console.log("create " + this.menuLabel);
      },
      deleteDatabaseOrTable() {
        this.contextMenuVisible = false;
        console.log("delete " + this.menuLabel);
      },
      attribute() {
        this.contextMenuVisible = false;
        console.log("show attribute " + this.menuLabel);
      },
      exportDatabaseOrTable() {
        this.contextMenuVisible = false;
        console.log("export " + this.menuLabel);
      },

    }
}
</script>
<style lang="scss">
  html,
  body {
    height: 100%;
  }
  #dataPage {
    margin: 0 0;
    font-family: 'Microsoft Yahei', 'Avenir', Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-align: center;
    color: #2c3e50;
    height: 100%;
  }
  // 右键会选中文字，为了美观将它禁用
  #el-tree{
    user-select:none;
  }
  .right-menu {
    font-size: 14px;
    position: fixed;
    background: #fff;
    border: solid 1px rgba(0, 0, 0, .2);
    border-radius: 3px;
    z-index: 999;
    display: none;
  }
  .right-menu a {
    width: 150px;
    height: 28px;
    line-height: 28px;
    text-align: center;
    display: block;
    color: #1a1a1a;
  }
  .right-menu a:hover {
    background: #eee;
    color: #fff;
  }
  .right-menu {
      border: 1px solid #eee;
      box-shadow: 0 0.5em 1em 0 rgba(0,0,0,.1);
      border-radius: 1px;
  }
  a {
      text-decoration: none;
  }
  .right-menu a {
      padding: 2px;
  }
  .right-menu a:hover {
      background: #99A9BF;
  }
</style>