Collapse API
The API documentation of the Collapse React component. Learn more about the props and the CSS customization points.
Import
import Collapse from '@material-ui/core/Collapse';
// or
import { Collapse } from '@material-ui/core';You can learn more about the difference by reading this guide.
The Collapse transition is used by the Vertical Stepper StepContent component. It uses react-transition-group internally.
Component name
The MuiCollapse name can be used for providing default props or style overrides at the theme level.
Props
| Name | Type | Default | Description | 
|---|---|---|---|
| children | node | The content node to be collapsed. | |
| classes | object | Override or extend the styles applied to the component. See CSS API below for more details. | |
| collapsedSize | number | string | '0px' | The width (horizontal) or height (vertical) of the container when collapsed. | 
| component | element type | 'div' | The component used for the root node. Either a string to use a HTML element or a component. ⚠️ Needs to be able to hold a ref. | 
| in | bool | If true, the component will transition in. | |
| orientation | 'horizontal' | 'vertical' | 'vertical' | The collapse transition orientation. | 
| timeout | 'auto' | number | { appear?: number, enter?: number, exit?: number } | duration.standard | The duration for the transition, in milliseconds. You may specify a single timeout for all transitions, or individually with an object. Set to 'auto' to automatically calculate transition time based on height. | 
The ref is forwarded to the root element.
Any other props supplied will be provided to the root element (Transition).
CSS
| Rule name | Global class | Description | 
|---|---|---|
| root | .MuiCollapse-root | Styles applied to the root element. | 
| horizontal | .MuiCollapse-horizontal | Pseudo-class applied to the root element if orientation="horizontal". | 
| entered | .MuiCollapse-entered | Styles applied to the root element when the transition has entered. | 
| hidden | .MuiCollapse-hidden | Styles applied to the root element when the transition has exited and collapsedSize!= 0px. | 
| wrapper | .MuiCollapse-wrapper | Styles applied to the outer wrapper element. | 
| wrapperInner | .MuiCollapse-wrapperInner | Styles applied to the inner wrapper element. | 
You can override the style of the component thanks to one of these customization points:
- With a rule name of the classesobject prop.
- With a global class name.
- With a theme and an overridesproperty.
If that's not sufficient, you can check the implementation of the component for more detail.
Inheritance
The props of the Transition component, from react-transition-group, are also available. You can take advantage of this behavior to target nested components.