ant-design-vue/components/menu/demo/sider-current.vue

<docs>
---
order: 2
title:
  zh-CN: 只展开当前父级菜单
  en-US: Open current submenu only
---

## zh-CN

点击菜单，收起其他展开的所有菜单，保持菜单聚焦简洁。

## en-US

Click the menu and you will see that all the other menus gets collapsed to keep the entire menu compact.

</docs>

<template>
  <div>
    <a-menu
      v-model:selectedKeys="state.selectedKeys"
      style="width: 256px"
      mode="inline"
      :open-keys="state.openKeys"
      :items="items"
      @openChange="onOpenChange"
    ></a-menu>
  </div>
</template>
<script lang="ts" setup>
import { VueElement, h, reactive } from 'vue';
import { MailOutlined, AppstoreOutlined, SettingOutlined } from '@ant-design/icons-vue';
import { ItemType } from 'ant-design-vue';

function getItem(
  label: VueElement | string,
  key: string,
  icon?: any,
  children?: ItemType[],
  type?: 'group',
): ItemType {
  return {
    key,
    icon,
    children,
    label,
    type,
  } as ItemType;
}

const items: ItemType[] = reactive([
  getItem('Navigation One', 'sub1', () => h(MailOutlined), [
    getItem('Option 1', '1'),
    getItem('Option 2', '2'),
    getItem('Option 3', '3'),
    getItem('Option 4', '4'),
  ]),
  getItem('Navigation Two', 'sub2', () => h(AppstoreOutlined), [
    getItem('Option 5', '5'),
    getItem('Option 6', '6'),
    getItem('Submenu', 'sub3', null, [getItem('Option 7', '7'), getItem('Option 8', '8')]),
  ]),
  getItem('Navigation Three', 'sub4', () => h(SettingOutlined), [
    getItem('Option 9', '9'),
    getItem('Option 10', '10'),
    getItem('Option 11', '11'),
    getItem('Option 12', '12'),
  ]),
]);

const state = reactive({
  rootSubmenuKeys: ['sub1', 'sub2', 'sub4'],
  openKeys: ['sub1'],
  selectedKeys: [],
});
const onOpenChange = (openKeys: string[]) => {
  const latestOpenKey = openKeys.find(key => state.openKeys.indexOf(key) === -1);
  if (state.rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
    state.openKeys = openKeys;
  } else {
    state.openKeys = latestOpenKey ? [latestOpenKey] : [];
  }
};
</script>