cjd-parkball
Version:
> 中后台业务组件库，中后台就像公园，进入需要买门票（登录），所以以 Parkball(公园球) 命名，公园内必定捕获！作为一个组件库，提供使用方法文档，方便开发者的调用
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Markdown
---
category: 2
title: 只展开当前父级菜单
title_en: 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.
````jsx
import { Menu, Icon } from 'parkball';
const SubMenu = Menu.SubMenu;
class Sider extends React.Component {
// submenu keys of first level
rootSubmenuKeys = ['sub1', 'sub2', 'sub4'];
state = {
openKeys: ['sub1'],
};
onOpenChange = (openKeys) => {
const latestOpenKey = openKeys.find(key => this.state.openKeys.indexOf(key) === -1);
if (this.rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
this.setState({ openKeys });
} else {
this.setState({
openKeys: latestOpenKey ? [latestOpenKey] : [],
});
}
}
render() {
return (
<Menu
mode="inline"
openKeys={this.state.openKeys}
onOpenChange={this.onOpenChange}
style={{ width: 256 }}
>
<SubMenu key="sub1" title={<span><Icon type="mail" /><span>Navigation One</span></span>}>
<Menu.Item key="1">Option 1</Menu.Item>
<Menu.Item key="2">Option 2</Menu.Item>
<Menu.Item key="3">Option 3</Menu.Item>
<Menu.Item key="4">Option 4</Menu.Item>
</SubMenu>
<SubMenu key="sub2" title={<span><Icon type="appstore" /><span>Navigation Two</span></span>}>
<Menu.Item key="5">Option 5</Menu.Item>
<Menu.Item key="6">Option 6</Menu.Item>
<SubMenu key="sub3" title="Submenu">
<Menu.Item key="7">Option 7</Menu.Item>
<Menu.Item key="8">Option 8</Menu.Item>
</SubMenu>
</SubMenu>
<SubMenu key="sub4" title={<span><Icon type="setting" /><span>Navigation Three</span></span>}>
<Menu.Item key="9">Option 9</Menu.Item>
<Menu.Item key="10">Option 10</Menu.Item>
<Menu.Item key="11">Option 11</Menu.Item>
<Menu.Item key="12">Option 12</Menu.Item>
</SubMenu>
</Menu>
);
}
}
ReactDOM.render(<Sider />, mountNode);
````