## Collapse 组件示例
### 折叠面板
可以同时展开多个面板,这个例子默认展开了第一个。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: <p>{text}</p>,
},
{
key: '2',
label: 'This is panel header 2',
children: <p>{text}</p>,
},
{
key: '3',
label: 'This is panel header 3',
children: <p>{text}</p>,
},
];
const App: React.FC = () => {
const onChange = (key: string | string[]) => {
console.log(key);
};
return <Collapse items={items} defaultActiveKey={['1']} onChange={onChange} />;
};
export default App;
```
### 面板尺寸
折叠面板有大、中、小三种尺寸。
通过设置 `size` 为 `large` `small` 分别把折叠面板设为大、小尺寸。若不设置 `size`,则尺寸默认为中。
```tsx
import React from 'react';
import { Collapse, Divider } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const App: React.FC = () => (
<>
<Divider titlePlacement="start">Default Size</Divider>
<Collapse
items={[{ key: '1', label: 'This is default size panel header', children: <p>{text}</p> }]}
/>
<Divider titlePlacement="start">Small Size</Divider>
<Collapse
size="small"
items={[{ key: '1', label: 'This is small size panel header', children: <p>{text}</p> }]}
/>
<Divider titlePlacement="start">Large Size</Divider>
<Collapse
size="large"
items={[{ key: '1', label: 'This is large size panel header', children: <p>{text}</p> }]}
/>
</>
);
export default App;
```
### 手风琴
手风琴模式,始终只有一个面板处在激活状态。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: <p>{text}</p>,
},
{
key: '2',
label: 'This is panel header 2',
children: <p>{text}</p>,
},
{
key: '3',
label: 'This is panel header 3',
children: <p>{text}</p>,
},
];
const App: React.FC = () => <Collapse accordion items={items} />;
export default App;
```
### 面板嵌套
嵌套折叠面板。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const itemsNest: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel nest panel',
children: <p>{text}</p>,
},
];
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: <Collapse defaultActiveKey="1" items={itemsNest} />,
},
{
key: '2',
label: 'This is panel header 2',
children: <p>{text}</p>,
},
{
key: '3',
label: 'This is panel header 3',
children: <p>{text}</p>,
},
];
const App: React.FC = () => {
const onChange = (key: string | string[]) => {
console.log(key);
};
return <Collapse onChange={onChange} items={items} />;
};
export default App;
```
### 简洁风格
一套没有边框的简洁样式。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = (
<p style={{ paddingInlineStart: 24 }}>
A dog is a type of domesticated animal. Known for its loyalty and faithfulness, it can be found
as a welcome guest in many households across the world.
</p>
);
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: text,
},
{
key: '2',
label: 'This is panel header 2',
children: text,
},
{
key: '3',
label: 'This is panel header 3',
children: text,
},
];
const App: React.FC = () => <Collapse items={items} bordered={false} defaultActiveKey={['1']} />;
export default App;
```
### 自定义面板
自定义各个面板的背景色、圆角、边距和图标。
```tsx
import type { CSSProperties } from 'react';
import React from 'react';
import { CaretRightOutlined } from '@ant-design/icons';
import type { CollapseProps } from 'antd';
import { Collapse, theme } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const getItems: (panelStyle: CSSProperties) => CollapseProps['items'] = (panelStyle) => [
{
key: '1',
label: 'This is panel header 1',
children: <p>{text}</p>,
style: panelStyle,
},
{
key: '2',
label: 'This is panel header 2',
children: <p>{text}</p>,
style: panelStyle,
},
{
key: '3',
label: 'This is panel header 3',
children: <p>{text}</p>,
style: panelStyle,
},
];
const App: React.FC = () => {
const { token } = theme.useToken();
const panelStyle: React.CSSProperties = {
marginBottom: 24,
background: token.colorFillAlter,
borderRadius: token.borderRadiusLG,
border: 'none',
};
return (
<Collapse
bordered={false}
defaultActiveKey={['1']}
expandIcon={({ isActive }) => <CaretRightOutlined rotate={isActive ? 90 : 0} />}
style={{ background: token.colorBgContainer }}
items={getItems(panelStyle)}
/>
);
};
export default App;
```
### 隐藏箭头
你可以通过 `showArrow={false}` 隐藏 `CollapsePanel` 组件的箭头图标。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header with arrow icon',
children: <p>{text}</p>,
},
{
key: '2',
label: 'This is panel header with no arrow icon',
children: <p>{text}</p>,
showArrow: false,
},
];
const App: React.FC = () => {
const onChange = (key: string | string[]) => {
console.log(key);
};
return <Collapse defaultActiveKey={['1']} onChange={onChange} items={items} />;
};
export default App;
```
### 额外节点
自定义渲染每个面板右上角的内容。
```tsx
import React, { useState } from 'react';
import { SettingOutlined } from '@ant-design/icons';
import type { CollapseProps } from 'antd';
import { Collapse, Select } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const App: React.FC = () => {
const [expandIconPlacement, setExpandIconPlacement] =
useState<CollapseProps['expandIconPlacement']>('start');
const onPlacementChange = (newExpandIconPlacement: CollapseProps['expandIconPlacement']) => {
setExpandIconPlacement(newExpandIconPlacement);
};
const onChange = (key: string | string[]) => {
console.log(key);
};
const genExtra = () => (
<SettingOutlined
onClick={(event) => {
// If you don't want click extra trigger collapse, you can prevent this:
event.stopPropagation();
}}
/>
);
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: <div>{text}</div>,
extra: genExtra(),
},
{
key: '2',
label: 'This is panel header 2',
children: <div>{text}</div>,
extra: genExtra(),
},
{
key: '3',
label: 'This is panel header 3',
children: <div>{text}</div>,
extra: genExtra(),
},
];
return (
<>
<Collapse
defaultActiveKey={['1']}
onChange={onChange}
expandIconPlacement={expandIconPlacement}
items={items}
/>
<br />
<span>Expand Icon Placement: </span>
<Select
value={expandIconPlacement}
style={{ margin: '0 8px' }}
onChange={onPlacementChange}
options={[
{ label: 'start', value: 'start' },
{ label: 'end', value: 'end' },
]}
/>
</>
);
};
export default App;
```
### 幽灵折叠面板
将折叠面板的背景变成透明。
```tsx
import React from 'react';
import type { CollapseProps } from 'antd';
import { Collapse } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: <p>{text}</p>,
},
{
key: '2',
label: 'This is panel header 2',
children: <p>{text}</p>,
},
{
key: '3',
label: 'This is panel header 3',
children: <p>{text}</p>,
},
];
const App: React.FC = () => <Collapse defaultActiveKey={['1']} ghost items={items} />;
export default App;
```
### 可折叠触发区域
通过 `collapsible` 属性,可以设置面板的可折叠触发区域。
```tsx
import React from 'react';
import { Collapse, Space } from 'antd';
const text = `
A dog is a type of domesticated animal.
Known for its loyalty and faithfulness,
it can be found as a welcome guest in many households across the world.
`;
const App: React.FC = () => (
<Space vertical>
<Collapse
collapsible="header"
defaultActiveKey={['1']}
items={[
{
key: '1',
label: 'This panel can be collapsed by clicking text or icon',
children: <p>{text}</p>,
},
]}
/>
<Collapse
collapsible="icon"
defaultActiveKey={['1']}
items={[
{
key: '1',
label: 'This panel can only be collapsed by clicking icon',
children: <p>{text}</p>,
},
]}
/>
<Collapse
collapsible="disabled"
items={[
{
key: '1',
label: "This panel can't be collapsed",
children: <p>{text}</p>,
},
]}
/>
</Space>
);
export default App;
```
### 自定义语义结构的样式和类
通过 `classNames` 和 `styles` 传入对象/函数可以自定义 Collapse 的[语义化结构](#semantic-dom)样式。
```tsx
import React from 'react';
import { Collapse, Flex } from 'antd';
import { createStyles } from 'antd-style';
import type { CollapseProps } from '..';
const useStyles = createStyles(() => ({
root: {
backgroundColor: '#fafafa',
border: '1px solid #e0e0e0',
borderRadius: 8,
},
}));
const element = (
<p>
A dog is a type of domesticated animal. Known for its loyalty and faithfulness, it can be found
as a welcome guest in many households across the world.
</p>
);
const items: CollapseProps['items'] = [
{
key: '1',
label: 'This is panel header 1',
children: element,
},
{
key: '2',
label: 'This is panel header 2',
children: element,
},
{
key: '3',
label: 'This is panel header 3',
children: element,
},
];
const styles: CollapseProps['styles'] = {
root: {
backgroundColor: '#fafafa',
border: '1px solid #e0e0e0',
borderRadius: 8,
},
header: {
backgroundColor: '#f0f0f0',
padding: '12px 16px',
color: '#141414',
},
};
const stylesFn: CollapseProps['styles'] = ({ props }) => {
if (props.size === 'large') {
return {
root: {
backgroundColor: '#fff',
border: '1px solid #696FC7',
borderRadius: 8,
},
header: {
backgroundColor: '#F5EFFF',
padding: '12px 16px',
color: '#141414',
},
} satisfies CollapseProps['styles'];
}
};
const App: React.FC = () => {
const { styles: classNames } = useStyles();
const sharedProps: CollapseProps = { classNames, items };
return (
<Flex vertical gap="middle">
<Collapse {...sharedProps} defaultActiveKey={['1']} styles={styles} />
<Collapse {...sharedProps} defaultActiveKey={['2']} styles={stylesFn} size="large" />
</Flex>
);
};
export default App;
```
### 组件 Token
Component Token Debug.
```tsx
import React from 'react';
import { Collapse, ConfigProvider } from 'antd';
/** Test usage. Do not use in your production. */
import type { CollapseProps } from 'antd';
const text = `Ant Design! `.repeat(26);
const items: CollapseProps['items'] = [
{ key: '1', label: `This is panel header 1, (${text})`, children: text },
{ key: '2', label: `This is panel header 2, (${text})`, children: text },
{ key: '3', label: `This is panel header 3, (${text})`, children: text },
];
export default () => (
<ConfigProvider
theme={{
components: {
Collapse: {
headerPadding: '0px 10px 20px 30px',
headerBg: '#eaeeff',
contentPadding: '0px 10px 20px 30px',
contentBg: '#e6f7ff',
},
},
}}
>
<Collapse items={items} />
</ConfigProvider>
);
```