import { InjectionToken, Injector, Type } from '@angular/core';
import { BehaviorSubject, Subscription } from 'rxjs';
import { ConfigurationService } from '../../shared/services/configuration.service';
import * as i0 from "@angular/core";
export declare enum ServerEventServiceStatus {
    Connecting = 0,
    Open = 1,
    Closed = 2
}
export declare interface ServerEvent {
    id?: string;
    additionalType?: string;
    entitySet?: string;
    entityType?: string;
    entityAction?: string;
    target?: any;
    result?: any;
    status?: any;
    error?: any;
    recipient?: string;
    scope?: string;
    dateCreated?: Date;
}
export declare interface ServerEventSubscriber {
    subscribe<T>(event: T): void;
}
export declare let SERVER_EVENT_SUBSCRIBERS: InjectionToken<Type<ServerEventSubscriber>[]>;
export declare let SERVER_EVENT_CHILD_SUBSCRIBERS: InjectionToken<Type<ServerEventSubscriber>[]>;
export declare class ServerEventService {
    private configuration;
    private injector;
    private addSubscribers;
    message: BehaviorSubject<any>;
    error: BehaviorSubject<any>;
    private eventSource;
    private _heartbeatTimeout;
    private _heartbeatInterval;
    private activatedUser;
    subscribers: Map<any, Subscription>;
    private destroy$;
    constructor(configuration: ConfigurationService, injector: Injector, addSubscribers: Array<Type<ServerEventSubscriber>>);
    closeSubscription(): void;
    load(): void;
    /**
     * Adds a server event subscriber
     * @param token
     */
    subscribe(token: Type<ServerEventSubscriber>): void;
    /**
     * Removes a server event subscriber
     * @param token
     */
    unsubscribe(token: Type<ServerEventSubscriber>): void;
    protected get source(): string;
    protected get heartbeatTimeout(): number;
    get status(): ServerEventServiceStatus;
    openAsync(): Promise<ServerEventService>;
    private getUserSync;
    open(): this;
    protected onMessage(ev: any): void;
    protected onError(ev: any): void;
    close(): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<ServerEventService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ServerEventService>;
}