import { NgZone, OnDestroy } from "@angular/core";
import { Subject } from "rxjs";
import { EventBus, EventDefinition } from "@nova-ui/bits";
import { RefresherSettingsService } from "./refresher-settings.service";
import { IWidgetEvent } from "../../services/widget-to-dashboard-event-proxy.service";
import { IConfigurable, IProperties } from "../../types";
export interface IRefresherProperties extends IProperties {
    interval?: number;
    enabled?: boolean;
    overrideDefaultSettings?: boolean;
    eventDef?: EventDefinition<any>;
}
/**
 * This provider emits the REFRESH event every X milliseconds
 */
export declare class Refresher implements OnDestroy, IConfigurable {
    protected eventBus: EventBus<IWidgetEvent>;
    protected ngZone: NgZone;
    protected refresherSettings: RefresherSettingsService;
    private intervalRef?;
    protected enabled: boolean;
    protected overrideDefaultSettings: boolean;
    protected interval: number;
    protected eventDef: EventDefinition<unknown>;
    readonly destroy$: Subject<void>;
    constructor(eventBus: EventBus<IWidgetEvent>, ngZone: NgZone, refresherSettings: RefresherSettingsService);
    updateConfiguration(properties: IRefresherProperties): void;
    ngOnDestroy(): void;
    private initializeInterval;
    protected performAction(): void;
    private getInterval;
    private clearInterval;
}