expand collapse -Go服务器开发

要将这个组件修改为点击图标来展开和收起菜单，你可以使用一个图标（例如一个按钮）来切换 isCollapse 的状态。以下是如何实现这一点的示例代码：

<template>
  <div>
    <el-icon @click="toggleCollapse" style="cursor: pointer; margin-bottom: 20px;">
      <Location v-if="isCollapse" />
      <IconMenu v-else />
    </el-icon>
    
    <el-menu
      default-active="2"
      class="el-menu-vertical-demo"
      :collapse="isCollapse"
      @open="handleOpen"
      @close="handleClose"
    >
      <el-sub-menu index="1">
        <template #title>
          <el-icon><location /></el-icon>
          <span>Navigator One</span>
        </template>
        <el-menu-item-group>
          <template #title><span>Group One</span></template>
          <el-menu-item index="1-1">item one</el-menu-item>
          <el-menu-item index="1-2">item two</el-menu-item>
        </el-menu-item-group>
        <el-menu-item-group title="Group Two">
          <el-menu-item index="1-3">item three</el-menu-item>
        </el-menu-item-group>
        <el-sub-menu index="1-4">
          <template #title><span>item four</span></template>
          <el-menu-item index="1-4-1">item one</el-menu-item>
        </el-sub-menu>
      </el-sub-menu>

      <!-- 其他菜单项 -->
      <el-menu-item index="2">
        <el-icon><icon-menu /></el-icon>
        <template #title>Navigator Two</template>
      </el-menu-item>

      <!-- 禁用的菜单项 -->
      <el-menu-item index="3" disabled>
        <el-icon><document /></el-icon>
        <template #title>Navigator Three</template>
      </el-menu-item>

      <!-- 更多菜单项 -->
      <el-menu-item index="4">
        <el-icon><setting /></el-icon>
        <template #title>Navigator Four</template>
      </el-menu-item>

    </el-menu>

  </div>

</template>

<script lang="ts" setup>
// 引入 Vue 和 Element Plus 图标
import { ref } from 'vue'
import {
  Document,
  Menu as IconMenu,
  Location,
  Setting,
} from '@element-plus/icons-vue'

// 定义响应式变量
const isCollapse = ref(true)

// 切换展开/收起状态的函数
const toggleCollapse = () => {
  isCollapse.value = !isCollapse.value;
}

// 打开和关闭事件处理
const handleOpen = (key: string, keyPath: string[]) => {
  console.log(key, keyPath)
}
const handleClose = (key: string, keyPath: string[]) => {
  console.log(key, keyPath)
}
</script>

<style scoped>
// 样式设置，可以根据需要调整宽度和高度等
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
</style>