# withConstrainedTabbing

`withConstrainedTabbing` is a React [higher-order component](https://facebook.github.io/react/docs/higher-order-components.html) adding the ability to constrain keyboard navigation with the Tab key within a component. For accessibility reasons, some UI components need to constrain Tab navigation, for example modal dialogs or similar UI. Use of this component is recommended only in cases where a way to navigate away from the wrapped component is implemented by other means, usually by pressing the Escape key or using a specific UI control, e.g. a "Close" button.

## Usage

Wrap your original component with `withConstrainedTabbing`.

```jsx
import {
	withConstrainedTabbing,
	TextControl,
	Button,
} from '@wordpress/components';
import { withState } from '@wordpress/compose';

const ConstrainedTabbing = withConstrainedTabbing(
	( { children } ) => children
);

const MyComponentWithConstrainedTabbing = withState( {
	isConstrainedTabbing: false,
} )( ( { isConstrainedTabbing, setState } ) => {
	let form = (
		<form>
			<TextControl label="Input 1" onChange={ () => {} } />
			<TextControl label="Input 2" onChange={ () => {} } />
		</form>
	);
	if ( isConstrainedTabbing ) {
		form = <ConstrainedTabbing>{ form }</ConstrainedTabbing>;
	}

	const toggleConstrain = () => {
		setState( ( state ) => ( {
			isConstrainedTabbing: ! state.isConstrainedTabbing,
		} ) );
	};

	return (
		<div>
			{ form }
			<Button isSecondary onClick={ toggleConstrain }>
				{ isConstrainedTabbing ? 'Disable' : 'Enable' } constrain
				tabbing
			</Button>
		</div>
	);
} );
```