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90 lines
2.6 KiB
Markdown
Executable File
90 lines
2.6 KiB
Markdown
Executable File
---
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order: 2
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title:
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zh-CN: 只展开当前父级菜单
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en-US: Open current submenu only
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---
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## zh-CN
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点击菜单，收起其他展开的所有菜单，保持菜单聚焦简洁。
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> 该用法要求 antd@2.0+
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## en-US
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Click the menu and you will see that all the other menus gets collapsed to keep the entire menu compact.
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> This demo is for antd@2.0+.
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````jsx
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import { Menu, Icon } from 'antd';
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const SubMenu = Menu.SubMenu;
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class Sider extends React.Component {
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state = {
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current: '1',
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openKeys: [],
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}
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handleClick = (e) => {
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console.log('Clicked: ', e);
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this.setState({ current: e.key });
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}
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onOpenChange = (openKeys) => {
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const state = this.state;
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const latestOpenKey = openKeys.find(key => !(state.openKeys.indexOf(key) > -1));
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const latestCloseKey = state.openKeys.find(key => !(openKeys.indexOf(key) > -1));
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let nextOpenKeys = [];
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if (latestOpenKey) {
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nextOpenKeys = this.getAncestorKeys(latestOpenKey).concat(latestOpenKey);
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}
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if (latestCloseKey) {
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nextOpenKeys = this.getAncestorKeys(latestCloseKey);
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}
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this.setState({ openKeys: nextOpenKeys });
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}
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getAncestorKeys = (key) => {
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const map = {
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sub3: ['sub2'],
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};
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return map[key] || [];
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}
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render() {
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return (
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<Menu
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mode="inline"
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openKeys={this.state.openKeys}
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selectedKeys={[this.state.current]}
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style={{ width: 240 }}
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onOpenChange={this.onOpenChange}
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onClick={this.handleClick}
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>
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<SubMenu key="sub1" title={<span><Icon type="mail" /><span>Navigation One</span></span>}>
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<Menu.Item key="1">Option 1</Menu.Item>
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<Menu.Item key="2">Option 2</Menu.Item>
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<Menu.Item key="3">Option 3</Menu.Item>
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<Menu.Item key="4">Option 4</Menu.Item>
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</SubMenu>
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<SubMenu key="sub2" title={<span><Icon type="appstore" /><span>Navigation Two</span></span>}>
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<Menu.Item key="5">Option 5</Menu.Item>
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<Menu.Item key="6">Option 6</Menu.Item>
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<SubMenu key="sub3" title="Submenu">
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<Menu.Item key="7">Option 7</Menu.Item>
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<Menu.Item key="8">Option 8</Menu.Item>
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</SubMenu>
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</SubMenu>
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<SubMenu key="sub4" title={<span><Icon type="setting" /><span>Navigation Three</span></span>}>
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<Menu.Item key="9">Option 9</Menu.Item>
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<Menu.Item key="10">Option 10</Menu.Item>
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<Menu.Item key="11">Option 11</Menu.Item>
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<Menu.Item key="12">Option 12</Menu.Item>
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</SubMenu>
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</Menu>
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);
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}
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}
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ReactDOM.render(<Sider />, mountNode);
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````
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