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docs/components/page-header/LanguagePicker.tsx
2023-08-03 16:57:27 +00:00

118 lines
4.3 KiB
TypeScript

import { useRouter } from 'next/router'
import { GlobeIcon } from '@primer/octicons-react'
import { useLanguages } from 'components/context/LanguagesContext'
import { useTranslation } from 'components/hooks/useTranslation'
import { useUserLanguage } from 'components/hooks/useUserLanguage'
import { ActionList, ActionMenu, IconButton, Link } from '@primer/react'
type Props = {
xs?: boolean
mediumOrLower?: boolean
}
export const LanguagePicker = ({ xs, mediumOrLower }: Props) => {
const router = useRouter()
const { languages } = useLanguages()
const { setUserLanguageCookie } = useUserLanguage()
const locale = router.locale || 'en'
const { t } = useTranslation('picker')
// Remember, in this context `languages` is only the active ones
// that are available. I.e. no wip ones.
// Also, if the current context has a page and that page has own ideas
// about which languages it's available in (e.g. early-access)
// it would already have been paired down.
const langs = Object.values(languages)
if (langs.length < 2) {
return null
}
const selectedLang = languages[locale]
// The `router.asPath` will always be without a hash in SSR
// So to avoid a hydraration failure on the client, we have to
// normalize it to be without the hash. That way the path is treated
// in a "denormalized" way.
const routerPath = router.asPath.split('#')[0]
// languageList is specifically <ActionList.Item>'s which are reused
// for menus that behave differently at the breakpoints.
const languageList = langs.map((lang) => (
<ActionList.Item
key={`/${lang.code}${routerPath}`}
selected={lang === selectedLang}
as={Link}
href={`/${lang.code}${routerPath}`}
onSelect={() => {
if (lang.code) {
try {
setUserLanguageCookie(lang.code)
} catch (err) {
// You can never be too careful because setting a cookie
// can fail. For example, some browser
// extensions disallow all setting of cookies and attempts
// at the `document.cookie` setter could throw. Just swallow
// and move on.
console.warn('Unable to set preferred language cookie', err)
}
}
}}
>
<span data-testid="default-language">{lang.nativeName || lang.name}</span>
</ActionList.Item>
))
// At large breakpoints, we return the full <ActionMenu> with just the languages,
// at smaller breakpoints, we return just the <ActionList> with its items so that
// the <Header> component can place it inside its own <ActionMenu> with multiple
// groups, language being just one of those groups.
return (
<div data-testid="language-picker" className="d-flex">
{xs ? (
<>
{/* XS Mobile Menu */}
<ActionMenu>
<ActionMenu.Anchor>
<ActionMenu.Button
variant="invisible"
className="color-fg-default width-full"
aria-label={`Select language: current language is ${selectedLang.name}`}
sx={{
height: 'auto',
textAlign: 'left',
'span:first-child': { display: 'inline' },
}}
>
<span style={{ whiteSpace: 'pre-wrap' }}>{t('language_picker_label') + '\n'}</span>
<span className="color-fg-muted text-normal f6">{selectedLang.name}</span>
</ActionMenu.Button>
</ActionMenu.Anchor>
<ActionMenu.Overlay align="start">
<ActionList selectionVariant="single">{languageList}</ActionList>
</ActionMenu.Overlay>
</ActionMenu>
</>
) : mediumOrLower ? (
<ActionList className="hide-sm" selectionVariant="single">
<ActionList.Group title={t('language_picker_label')}>{languageList}</ActionList.Group>
</ActionList>
) : (
<ActionMenu>
<ActionMenu.Anchor>
<IconButton
icon={GlobeIcon}
aria-label={`Select language: current language is ${selectedLang.name}`}
/>
</ActionMenu.Anchor>
<ActionMenu.Overlay align="end">
<ActionList selectionVariant="single">{languageList}</ActionList>
</ActionMenu.Overlay>
</ActionMenu>
)}
</div>
)
}