84 lines
2.5 KiB
TypeScript
84 lines
2.5 KiB
TypeScript
/*
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* https://github.com/morethanwords/tweb
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* Copyright (C) 2019-2021 Eduard Kuzmenko
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* https://github.com/morethanwords/tweb/blob/master/LICENSE
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*/
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import { cancelEvent } from "../helpers/dom/cancelEvent";
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import { attachClickEvent } from "../helpers/dom/clickEvent";
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import loadFonts from "../helpers/dom/loadFonts";
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import { Config, LangPackDifference, LangPackString } from "../layer";
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import I18n, { LangPackKey } from "../lib/langPack";
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import apiManager from "../lib/mtproto/mtprotoworker";
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import rootScope from "../lib/rootScope";
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import Button from "./button";
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import { putPreloader } from "./misc";
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let set = false;
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function getLang(): Promise<[Config.config, LangPackString[], LangPackDifference.langPackDifference]> {
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if(cachedPromise) return cachedPromise;
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return cachedPromise = apiManager.getConfig().then(config => {
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if(config.suggested_lang_code !== I18n.lastRequestedLangCode) {
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//I18n.loadLangPack(config.suggested_lang_code);
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return Promise.all([
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config,
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I18n.getStrings(config.suggested_lang_code, ['Login.ContinueOnLanguage']),
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I18n.getCacheLangPack()
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]);
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} else {
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return [] as any;
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}
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});
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}
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let cachedPromise: ReturnType<typeof getLang>;
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export default function getLanguageChangeButton(appendTo: HTMLElement) {
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if(set) return;
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getLang().then(([config, strings]) => {
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if(!config) {
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return;
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}
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const backup: LangPackString[] = [];
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strings.forEach(string => {
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const backupString = I18n.strings.get(string.key as LangPackKey);
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if(!backupString) {
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return;
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}
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backup.push(backupString);
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I18n.strings.set(string.key as LangPackKey, string);
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});
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const btnChangeLanguage = Button('btn-primary btn-secondary btn-primary-transparent primary', {text: 'Login.ContinueOnLanguage'});
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btnChangeLanguage.lastElementChild.classList.remove('i18n'); // prevent changing language
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loadFonts().then(() => {
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window.requestAnimationFrame(() => {
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appendTo.append(btnChangeLanguage);
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});
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});
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rootScope.addEventListener('language_change', () => {
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btnChangeLanguage.remove();
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}, {once: true});
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backup.forEach(string => {
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I18n.strings.set(string.key as LangPackKey, string);
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});
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attachClickEvent(btnChangeLanguage, (e) => {
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cancelEvent(e);
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set = true;
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btnChangeLanguage.disabled = true;
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putPreloader(btnChangeLanguage);
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I18n.getLangPack(config.suggested_lang_code);
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});
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});
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}
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