import { TranslateService } from '@ngx-translate/core';
import { Observable } from 'rxjs';
import { AppConfigService } from '../../app-config/app-config.service';
import { StorageService } from './storage.service';
import * as i0 from "@angular/core";
export declare enum UserPreferenceValues {
    PaginationSize = "paginationSize",
    Locale = "locale",
    SupportedPageSizes = "supportedPageSizes",
    ExpandedSideNavStatus = "expandedSidenav"
}
export declare class UserPreferencesService {
    translate: TranslateService;
    private appConfig;
    private storage;
    private document;
    private rendererFactory;
    private directionality;
    defaults: {
        paginationSize: number;
        supportedPageSizes: number[];
        locale: string;
        expandedSidenav: boolean;
    };
    private userPreferenceStatus;
    private onChangeSubject;
    onChange: Observable<any>;
    constructor(translate: TranslateService, appConfig: AppConfigService, storage: StorageService);
    private initUserPreferenceStatus;
    private initUserLanguage;
    /**
     * Sets up a callback to notify when a property has changed.
     *
     * @param property The property to watch
     * @returns Notification callback
     */
    select<T = any>(property: string): Observable<T>;
    /**
     * Gets a preference property.
     *
     * @param property Name of the property
     * @param defaultValue Default to return if the property is not found
     * @returns Preference property
     */
    get(property: string, defaultValue?: string): string;
    /**
     * Sets a preference property.
     *
     * @param property Name of the property
     * @param value New value for the property
     */
    set(property: string, value: any): void;
    /**
     * Sets a preference property.
     *
     * @param property Name of the property
     * @param value New value for the property
     */
    setWithoutStore(property: string, value: any): void;
    /**
     * Check if an item is present in the storage
     *
     * @param property Name of the property
     * @returns True if the item is present, false otherwise
     */
    hasItem(property: string): boolean;
    /**
     * Gets the active storage prefix for preferences.
     *
     * @returns Storage prefix
     */
    getStoragePrefix(): string;
    /**
     * Sets the active storage prefix for preferences.
     *
     * @param value Name of the prefix
     */
    setStoragePrefix(value: string | null): void;
    /**
     * Gets the full property key with prefix.
     *
     * @param property The property name
     * @returns Property key
     */
    getPropertyKey(property: string): string;
    /**
     * Gets an array containing the available page sizes.
     *
     * @returns Array of page size values
     */
    get supportedPageSizes(): number[];
    set supportedPageSizes(value: number[]);
    /** Pagination size. */
    set paginationSize(value: number);
    get paginationSize(): number;
    /**
     * Current locale setting.
     *
     * @returns locale name
     */
    get locale(): string;
    set locale(value: string);
    /**
     * Gets the default locale.
     *
     * @returns Default locale language code
     */
    getDefaultLocale(): string;
    private getLanguageByKey;
    static ɵfac: i0.ɵɵFactoryDeclaration<UserPreferencesService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<UserPreferencesService>;
}