import { Subject } from 'rxjs';
import { LocaleStorage } from './locale-storage';
import { L10nConfigRef } from "../models/l10n-config";
import { ISOCode, DateTimeOptions, DigitsOptions, RelativeTimeOptions, Unit } from '../models/types';
export interface ILocaleService {
    languageCodeChanged: Subject<string>;
    defaultLocaleChanged: Subject<string>;
    currencyCodeChanged: Subject<string>;
    timezoneChanged: Subject<string>;
    getConfiguration(): L10nConfigRef['locale'];
    init(): Promise<void>;
    getBrowserLanguage(): string | null;
    getAvailableLanguages(): string[];
    getLanguageDirection(languageCode?: string): string;
    getCurrentLanguage(): string;
    getCurrentCountry(): string;
    getCurrentScript(): string;
    getCurrentLocale(): string;
    getCurrentNumberingSystem(): string;
    getCurrentCalendar(): string;
    getDefaultLocale(): string;
    getCurrentCurrency(): string;
    getCurrencySymbol(currencyDisplay?: string, defaultLocale?: string, currency?: string): string;
    getCurrentTimezone(): string;
    setCurrentLanguage(languageCode: string): void;
    setDefaultLocale(languageCode: string, countryCode?: string, scriptCode?: string, numberingSystem?: string, calendar?: string): void;
    setCurrentCurrency(currencyCode: string): void;
    setCurrentTimezone(zoneName: string): void;
    formatDate(value: any, format?: string | DateTimeOptions, defaultLocale?: string, timezone?: string): string;
    formatRelativeTime(value: any, unit: Unit, format?: RelativeTimeOptions, defaultLocale?: string): string;
    formatDecimal(value: any, digits?: string | DigitsOptions, defaultLocale?: string): string;
    formatPercent(value: any, digits?: string | DigitsOptions, defaultLocale?: string): string;
    formatCurrency(value: any, digits?: string | DigitsOptions, currencyDisplay?: string, defaultLocale?: string, currency?: string): string;
    composeLocale(codes: ISOCode[]): string;
    rollback(): void;
}
/**
 * Manages language, default locale, currency & timezone.
 */
export declare class LocaleService implements ILocaleService {
    private configuration;
    private storage;
    /**
     * Fired when the language changes. Returns the language code.
     */
    languageCodeChanged: Subject<string>;
    /**
     * Fired when the default locale changes. Returns the default locale.
     */
    defaultLocaleChanged: Subject<string>;
    /**
     * Fired when the currency changes. Returns the currency code.
     */
    currencyCodeChanged: Subject<string>;
    /**
     * Fired when the timezone changes. Returns the timezone.
     */
    timezoneChanged: Subject<string>;
    private defaultLocale;
    private currencyCode;
    private timezone;
    private rollbackLanguageCode;
    private rollbackDefaultLocale;
    private rollbackCurrencyCode;
    private rollbackTimezone;
    constructor(configuration: L10nConfigRef, storage: LocaleStorage);
    getConfiguration(): L10nConfigRef['locale'];
    init(): Promise<void>;
    getBrowserLanguage(): string | null;
    getAvailableLanguages(): string[];
    getLanguageDirection(languageCode?: string): string;
    getCurrentLanguage(): string;
    getCurrentCountry(): string;
    getCurrentScript(): string;
    /**
     * Returns the well formatted locale as {languageCode}[-scriptCode][-countryCode]
     */
    getCurrentLocale(): string;
    getCurrentNumberingSystem(): string;
    getCurrentCalendar(): string;
    getDefaultLocale(): string;
    getCurrentCurrency(): string;
    getCurrencySymbol(currencyDisplay: 'code' | 'symbol' | 'name', defaultLocale?: string, currency?: string): string;
    getCurrentTimezone(): string;
    setCurrentLanguage(languageCode: string): void;
    setDefaultLocale(languageCode: string, countryCode?: string, scriptCode?: string, numberingSystem?: string, calendar?: string): void;
    setCurrentCurrency(currencyCode: string): void;
    setCurrentTimezone(zoneName: string): void;
    /**
     * Formats a date according to default locale.
     * @param value A Date, a number (milliseconds since UTC epoch) or an ISO string
     * @param format An alias or a DateTimeOptions object of the format. Default is 'mediumDate'
     * @param defaultLocale The default locale to use. Default is the current locale
     * @param timezone The time zone name. Default is the current timezone
     */
    formatDate(value: any, format?: string | DateTimeOptions, defaultLocale?: string, timezone?: string): string;
    /**
     * Formats a relative time according to default locale.
     * @param value Negative (or positive) number
     * @param unit Unit of the value. Possible values are: 'year', 'quarter', 'month', 'week', 'day', 'hour', 'minute', 'second'
     * @param format RelativeTimeOptions object of the format
     * @param defaultLocale The default locale to use. Default is the current locale
     */
    formatRelativeTime(value: any, unit: Unit, format?: RelativeTimeOptions, defaultLocale?: string): string;
    /**
     * Formats a decimal number according to default locale.
     * @param value The number to be formatted
     * @param digits An alias or a DigitsOptions object of the format
     * @param defaultLocale The default locale to use. Default is the current locale
     */
    formatDecimal(value: any, digits?: string | DigitsOptions, defaultLocale?: string): string;
    /**
     * Formats a number as a percentage according to default locale.
     * @param value The number to be formatted
     * @param digits An alias or a DigitsOptions object of the format
     * @param defaultLocale The default locale to use. Default is the current locale
     */
    formatPercent(value: any, digits?: string | DigitsOptions, defaultLocale?: string): string;
    /**
     * Formats a number as a currency according to default locale.
     * @param value The number to be formatted
     * @param digits An alias or a DigitsOptions object of the format
     * @param currencyDisplay The format for the currency. Possible values are 'code', 'symbol', 'name'. Default is 'symbol'
     * @param defaultLocale The default locale to use. Default is the current locale
     * @param currency The currency to use. Default is the current currency
     */
    formatCurrency(value: any, digits?: string | DigitsOptions, currencyDisplay?: 'code' | 'symbol' | 'name', defaultLocale?: string, currency?: string): string;
    composeLocale(codes: ISOCode[]): string;
    /**
     * Rollbacks to previous language, default locale, currency & timezone.
     */
    rollback(): void;
    private initLanguage;
    private initDefaultLocale;
    private initCurrency;
    private initTimezone;
    private matchLanguage;
    private releaseLanguage;
    private releaseDefaultLocale;
    private releaseCurrency;
    private releaseTimezone;
    private sendLanguageEvents;
    private sendDefaultLocaleEvents;
    private sendCurrencyEvents;
    private sendTimezoneEvents;
}