108 lines
2.6 KiB
JavaScript
108 lines
2.6 KiB
JavaScript
import { isPresent, isEmpty } from '@ember/utils';
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export default {
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name: 'i18n',
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initialize(appInstance) {
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let i18n = appInstance.lookup('service:i18n');
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let moment = appInstance.lookup('service:moment');
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let powerCalendar = appInstance.lookup('service:power-calendar');
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let availableLocales = i18n.get('locales');
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let locale = getLocale(availableLocales);
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i18n.set('locale', locale);
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moment.changeLocale(locale);
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powerCalendar.set('local', locale);
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}
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};
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function getLocale(availableLocales) {
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let methods = [
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getSavedLocale,
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getLocaleByBrowser
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];
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let locale;
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methods.any((method) => {
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let preferredLocales = method();
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let match;
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if (isEmpty(preferredLocales)) {
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return false;
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}
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match = preferredLocales.find((preferredLocale) => {
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return availableLocales.indexOf(preferredLocale) !== -1;
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});
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if (isEmpty(match)) {
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return false;
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}
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locale = match;
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return true;
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});
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if (locale) {
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return locale;
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} else {
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return 'en';
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}
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}
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function getLocaleByBrowser() {
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let languages;
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let { navigator } = window;
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let primaryLanguage;
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if (isPresent(navigator.languages)) {
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// Prefer experimental NavigatorLanguage.languages property if available.
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// NavigatorLanguage.languages returns an array of language codes ordered by preference.
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// Need to clone returned array cause otherwise Safari 10.1 throws an
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// "Attempted to assign to readonly property" error.
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languages = navigator.languages.slice(0);
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} else if (isPresent(navigator.language)) {
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// navigator.language should be available in most browsers
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// but only returns most prefered language
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languages = [navigator.language];
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} else if (isPresent(navigator.browserLanguage)) {
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// work-a-round for Internet Explorer
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// navigator.browserLanguage returns current operating system language
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languages = [navigator.browserLanguage];
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} else {
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return;
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}
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if (languages.length === 1) {
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// add primary language if the only available one is a combined language code
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primaryLanguage = languages[0].split('-')[0];
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if (primaryLanguage !== languages[0]) {
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languages.push(primaryLanguage);
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}
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}
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// normalize all language codes to lower case
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languages = languages.map((language) => {
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return language.toLowerCase();
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});
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return languages;
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}
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function getSavedLocale() {
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let { localStorage } = window;
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let locale;
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// test browser support
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if (!localStorage) {
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return;
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}
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locale = localStorage.getItem('locale');
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if (isEmpty(locale)) {
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return;
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}
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return [locale];
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}
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