/
DropdownToggle.tsx
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/
DropdownToggle.tsx
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import PropTypes from 'prop-types';
import React, { useContext, useCallback } from 'react';
import DropdownContext, { DropdownContextValue } from './DropdownContext';
export interface UseDropdownToggleProps {
ref: DropdownContextValue['setToggle'];
onClick: React.MouseEventHandler;
'aria-haspopup': boolean;
'aria-expanded': boolean;
}
export interface UseDropdownToggleMetadata {
show: DropdownContextValue['show'];
toggle: DropdownContextValue['toggle'];
}
const noop = () => {};
/**
* Wires up Dropdown toggle functionality, returning a set a props to attach
* to the element that functions as the dropdown toggle (generally a button).
*
* @memberOf Dropdown
*/
export function useDropdownToggle(): [
UseDropdownToggleProps,
UseDropdownToggleMetadata,
] {
const { show = false, toggle = noop, setToggle } =
useContext(DropdownContext) || {};
const handleClick = useCallback(
(e) => {
toggle(!show, e);
},
[show, toggle],
);
return [
{
ref: setToggle || noop,
onClick: handleClick,
'aria-haspopup': true,
'aria-expanded': !!show,
},
{ show, toggle },
];
}
const propTypes = {
/**
* A render prop that returns a Toggle element. The `props`
* argument should spread through to **a component that can accept a ref**. Use
* the `onToggle` argument to toggle the menu open or closed
*
* @type {Function ({
* show: boolean,
* toggle: (show: boolean) => void,
* props: {
* ref: (?HTMLElement) => void,
* aria-haspopup: true
* aria-expanded: boolean
* },
* }) => React.Element}
*/
children: PropTypes.func.isRequired,
};
export interface DropdownToggleProps {
children: (
props: UseDropdownToggleProps,
meta: UseDropdownToggleMetadata,
) => React.ReactNode;
}
/**
* Also exported as `<Dropdown.Toggle>` from `Dropdown`.
*
* @displayName DropdownToggle
* @memberOf Dropdown
*/
function DropdownToggle({ children }: DropdownToggleProps) {
const [props, meta] = useDropdownToggle();
return <>{children(props, meta)}</>;
}
DropdownToggle.displayName = 'ReactOverlaysDropdownToggle';
DropdownToggle.propTypes = propTypes;
/** @component */
export default DropdownToggle;