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Diffstat (limited to 'packages/demobank-ui/src/hooks/useLang.ts')
-rw-r--r-- | packages/demobank-ui/src/hooks/useLang.ts | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/packages/demobank-ui/src/hooks/useLang.ts b/packages/demobank-ui/src/hooks/useLang.ts new file mode 100644 index 000000000..5b02c5255 --- /dev/null +++ b/packages/demobank-ui/src/hooks/useLang.ts @@ -0,0 +1,30 @@ +/* + This file is part of GNU Anastasis + (C) 2021-2022 Anastasis SARL + + GNU Anastasis is free software; you can redistribute it and/or modify it under the + terms of the GNU Affero General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + GNU Anastasis is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License along with + GNU Anastasis; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +import { useNotNullLocalStorage } from "./useLocalStorage.js"; + +function getBrowserLang(): string | undefined { + if (window.navigator.languages) return window.navigator.languages[0]; + if (window.navigator.language) return window.navigator.language; + return undefined; +} + +export function useLang( + initial?: string, +): [string, (s: string) => void, boolean] { + const defaultLang = (getBrowserLang() || initial || "en").substring(0, 2); + return useNotNullLocalStorage("lang-preference", defaultLang); +} |