Unstable_TrapFocus API

API documentation for the React Unstable_TrapFocus component. Learn about the available props and the CSS API.

Import

import Unstable_TrapFocus from '@mui/base/Unstable_TrapFocus';
// or
import { Unstable_TrapFocus } from '@mui/base';

Utility component that locks focus inside the component.

Name	Type	Default	Description
open^*	bool	false	If `true`, focus is locked.
children	element		A single child content element. ⚠️ Needs to be able to hold a ref.
disableAutoFocus	bool	false	If `true`, the trap focus will not automatically shift focus to itself when it opens, and replace it to the last focused element when it closes. This also works correctly with any trap focus children that have the `disableAutoFocus` prop. Generally this should never be set to `true` as it makes the trap focus less accessible to assistive technologies, like screen readers.
disableEnforceFocus	bool	false	If `true`, the trap focus will not prevent focus from leaving the trap focus while open. Generally this should never be set to `true` as it makes the trap focus less accessible to assistive technologies, like screen readers.
disableRestoreFocus	bool	false	If `true`, the trap focus will not restore focus to previously focused element once trap focus is hidden.
getTabbable	func		Returns an array of ordered tabbable nodes (i.e. in tab order) within the root. For instance, you can provide the "tabbable" npm dependency. Signature: `function(root: HTMLElement) => void`
isEnabled	func	function defaultIsEnabled() { return true; }	This prop extends the `open` prop. It allows to toggle the open state without having to wait for a rerender when changing the `open` prop. This prop should be memoized. It can be used to support multiple trap focus mounted at the same time.

The component cannot hold a ref.