This package has moved to @accessible/disclosure

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npm i @accessible/collapse

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An accessible and versatile collapsible component for React

Features

• Style-agnostic You can use this component with the styling library of your choice. It works with CSS-in-JS, SASS, plain CSS, plain style objects, anything!
• Portal-friendly The collapse target will render into React portals of your choice when configured to do so.
• a11y/aria-compliant This component works with screen readers out of the box and manages focus for you.

Quick Start

Check out the example on CodeSandbox

import {Collapse, Target, Trigger, Close} from '@accessible/collapse'

const Component = () => (
  <Collapse>
    <Trigger>
      <button>Open me</button>
    </Trigger>

    <Target>
      <div className="my-collapse">
        <Close>
          <button>Close me</button>
        </Close>
      </div>
    </Target>
  </Collapse>
)

API

Components

Component	Description
<Collapse>	This component creates the context for your collapse target and trigger and contains some configuration options.
<Target>	This component wraps any React element and turns it into a collapse target.
<Trigger>	This component wraps any React element and turns it into a collapse trigger.
<Close>	This is a convenience component that wraps any React element and adds an onClick handler to close the collapse.

Hooks

Hook	Description
useCollapse()	This hook provides the value of the collapse's CollapseContextValue object.
useControls()	This hook provides access to the collapse's open, close, and toggle functions.
useIsOpen()	This hook provides access to the collapse's isOpen value.

<Collapse>

This component creates the context for your collapse target and trigger and contains some configuration options.

Props

Prop	Type	Default	Required?	Description
defaultOpen	boolean	false	No	This sets the default open state of the collapse. By default the collapse is closed.
open	boolean	undefined	No	You can control the open/closed state of the collapse with this prop. When it isn't undefined, this value will take precedence over any calls to open(), close(), or toggle().
onChange	(open: boolean) => void	undefined	No	This callback is invoked any time the open state of the collapse changes.
id	string	undefined	No	By default this component creates a unique id for you, as it is required for certain aria attributes. Supplying an id here overrides the auto id feature.
children	React.ReactNode | React.ReactNode[] | JSX.Element | ((context: CollapseContextValue) => React.ReactNode)	undefined	No	Your collapse contents and any other children.

<Target>

This component wraps any React element and turns it into a collapse target.

Props

Prop	Type	Default	Required?	Description
portal	boolean | string	false	No	When true this will render the collapse into a React portal with the id #portals. You can render it into any portal by providing its query selector here, e.g. #foobar, [data-portal=true], or .foobar.
closeOnEscape	boolean	true	No	By default the collapse will close when the Escape key is pressed. You can turn this off by providing false here.
closedClass	string	undefined	No	This class name will be applied to the child element when the collapse is closed.
openClass	string	"collapse--open"	No	This class name will be applied to the child element when the collapse is open.
closedStyle	React.CSSProperties	undefined	No	These styles will be applied to the child element when the collapse is closed in addition to the default styles that set the target's visibility.
openStyle	React.CSSProperties	undefined	No	These styles name will be applied to the child element when the collapse is open in addition to the default styles that set the target's visibility.
children	React.ReactElement	undefined	Yes	The child is cloned by this component and has aria attributes injected into its props as well as the events defined above.

Example

<Target>
  <div className="alert">Alert</div>
</Target>

// <div
//   class="alert"
//   aria-collapse="false"
//   id="collapse--12"
//   style="visibility: hidden;"
// >
//   Alert
// </div>

<Trigger>

This component wraps any React element and adds an onClick handler which toggles the open state of the collapse target.

Props

Prop	Type	Default	Required?	Description
closedClass	string	undefined	No	This class name will be applied to the child element when the collapse is closed.
openClass	string	undefined	No	This class name will be applied to the child element when the collapse is open.
closedStyle	React.CSSProperties	undefined	No	These styles will be applied to the child element when the collapse is closed.
openStyle	React.CSSProperties	undefined	No	These styles name will be applied to the child element when the collapse is open.
children	React.ReactElement	undefined	Yes	The child is cloned by this component and has aria attributes injected into its props as well as the events defined above.

<Trigger on="click">
  <button className="my-button">Open me!</button>
</Trigger>

// <button
//   class="my-button"
//   aria-controls="collapse--12"
//   aria-expanded="false"
// >
//   Open me!
// </button>

<Close>

This is a convenience component that wraps any React element and adds an onClick handler which closes the collapse.

Props

Prop	Type	Default	Required?	Description
children	React.ReactElement	undefined	Yes	The child is cloned by this component and has aria attributes injected into its props as well as the events defined above.

<Close>
  <button className="my-button">Close me</button>
</Close>

// <button
//   class="my-button"
//   aria-controls="collapse--12"
//   aria-expanded="false"
// >
//   Close me
// </button>

useCollapse()

This hook provides the value of the collapse's CollapseContextValue object

Example

const Component = () => {
  const {open, close, toggle, isOpen} = useCollapse()
  return <button onClick={toggle}>Toggle the collapse</button>
}

CollapseContextValue

interface CollapseContextValue {
  isOpen: boolean
  open: () => void
  close: () => void
  toggle: () => void
  id: string
}

useControls()

This hook provides access to the collapse's open, close, and toggle functions

Example

const Component = () => {
  const {open, close, toggle} = useControls()
  return (
    <Target>
      <div className="my-collapse">
        <button onClick={close}>Close me</button>
      </div>
    </Target>
  )
}

useIsOpen()

This hook provides access to the collapse's isOpen value

Example

const Component = () => {
  const isOpen = useIsOpen()
  return (
    <Target>
      <div className="my-collapse">Am I open? {isOpen ? 'Yes' : 'No'}</div>
    </Target>
  )
}

LICENSE

MIT