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Header.tsx
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Header.tsx
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import { IconButton } from '@components/Button';
import clsx from 'clsx';
import FocusTrap from 'focus-trap-react';
import React, { useEffect, useState } from 'react';
import { CloseSVG, HamburgerMenuSVG } from './HeaderIcons';
import { NavHeaderProps } from './props';
/**
* @see {@link https://live-storybook-react-kit.appa.pantheon.site/?path=/docs/header-header--docs}
*/
export const Header = ({
Logo,
mainNavItems,
secondaryNavItems,
overlayStyles,
navbarStyles,
focusTrapOptions,
}: NavHeaderProps) => {
const [isOpen, setIsOpen] = useState(false);
const [windowWidth, setWindowWidth] = useState(window.innerWidth);
const handleOpen = () => setIsOpen((prev) => !prev);
const MAX_MOBILE_NAV_WIDTH = 1023;
useEffect(() => {
const handleKeyUp = (e: KeyboardEvent) => {
if (e.key === 'Escape' || e.key === 'Esc') {
setIsOpen(false);
}
};
const handleResize = () => {
setWindowWidth(window.innerWidth);
windowWidth > MAX_MOBILE_NAV_WIDTH && setIsOpen(false);
};
setWindowWidth(window.innerWidth);
window.addEventListener('resize', handleResize);
window.addEventListener('keyup', handleKeyUp);
return () => {
window.removeEventListener('resize', handleResize);
window.removeEventListener('keyup', handleKeyUp);
};
}, [windowWidth]);
/**
* Need to use a ref here so the FocusTrap can work properly.
*/
const NavList = React.forwardRef<
React.ElementRef<'nav'>,
Pick<NavHeaderProps, 'mainNavItems' | 'secondaryNavItems'>
>(({ mainNavItems, secondaryNavItems }, ref) => {
const NAVLIST_STYLES = {
nav: clsx('rk-flex rk-items-center'),
ul: clsx(
'lg:rk-menu-horizontal',
isOpen && windowWidth <= MAX_MOBILE_NAV_WIDTH
? 'rk-menu-vertical rk-w-full'
: 'rk-hidden rk-flex-wrap lg:rk-flex',
),
};
return (
<header
ref={ref}
className={clsx(
navbarStyles,
'rk-z-10 rk-flex rk-w-full rk-items-center rk-py-4',
)}
>
<Logo />
<div
className={clsx(
overlayStyles,
'rk-w-full rk-justify-around',
isOpen && windowWidth <= MAX_MOBILE_NAV_WIDTH
? 'rk-absolute rk-bottom-0 rk-left-0 rk-z-10 rk-h-[calc(100%_-_72px)] rk-flex-col rk-overflow-y-auto rk-overflow-x-hidden rk-px-4 rk-pb-4 rk-pt-8 sm:rk-px-6 lg:rk-px-12'
: 'rk-hidden rk-flex-wrap lg:rk-flex',
)}
>
<nav
className={clsx(NAVLIST_STYLES.nav, 'rk-mr-auto lg:rk-w-2/3')}
aria-label="Main"
>
<ul className={NAVLIST_STYLES.ul}>{mainNavItems}</ul>
</nav>
<nav
className={clsx(
NAVLIST_STYLES.nav,
'lg:rk-w-1/3 lg:rk-justify-end',
)}
aria-label="Secondary"
>
<ul className={NAVLIST_STYLES.ul}>{secondaryNavItems}</ul>
</nav>
</div>
{isOpen && windowWidth <= MAX_MOBILE_NAV_WIDTH ? (
<IconButton
aria-hidden={isOpen && windowWidth >= MAX_MOBILE_NAV_WIDTH}
onClick={handleOpen}
className="rk-ml-auto"
data-testid="close-nav"
>
<CloseSVG />
</IconButton>
) : (
<IconButton
aria-hidden={!isOpen && windowWidth >= MAX_MOBILE_NAV_WIDTH}
onClick={handleOpen}
className="rk-ml-auto lg:rk-hidden"
data-testid="open-nav"
>
<HamburgerMenuSVG />
</IconButton>
)}
</header>
);
});
NavList.displayName = 'NavList';
return (
<>
{windowWidth > MAX_MOBILE_NAV_WIDTH ? (
<NavList
mainNavItems={mainNavItems}
secondaryNavItems={secondaryNavItems}
/>
) : (
<FocusTrap
active={isOpen}
paused={!isOpen}
focusTrapOptions={focusTrapOptions}
>
<div className="rk-w-full">
<NavList
mainNavItems={mainNavItems}
secondaryNavItems={secondaryNavItems}
/>
</div>
</FocusTrap>
)}
</>
);
};