42 lines
1.8 KiB
Plaintext
42 lines
1.8 KiB
Plaintext
/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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import {LocalizedStrings, MessageDictionary, MessageFormatter} from '@internationalized/message';
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import {useCallback, useMemo} from 'react';
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import {useLocale} from './context';
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export type FormatMessage = (key: string, variables?: {[key: string]: any}) => string;
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const cache = new WeakMap();
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function getCachedDictionary(strings: LocalizedStrings) {
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let dictionary = cache.get(strings);
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if (!dictionary) {
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dictionary = new MessageDictionary(strings);
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cache.set(strings, dictionary);
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}
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return dictionary;
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}
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/**
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* Handles formatting ICU Message strings to create localized strings for the current locale.
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* Automatically updates when the locale changes, and handles caching of messages for performance.
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* @param strings - A mapping of languages to strings by key.
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* @deprecated - use useLocalizedStringFormatter instead.
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*/
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export function useMessageFormatter(strings: LocalizedStrings): FormatMessage {
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let {locale} = useLocale();
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let dictionary = useMemo(() => getCachedDictionary(strings), [strings]);
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let formatter = useMemo(() => new MessageFormatter(locale, dictionary), [locale, dictionary]);
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return useCallback((key, variables) => formatter.format(key, variables), [formatter]);
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}
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