import { FilterKey } from './models/FilterKey';
import { EventAggregationService } from './platform/EventAggregationService';
import { ISubscriber } from '@studyportals/event-aggregation-service-interface';
import { FilterChangeInitiatedEvent } from './events/FilterChangeInitiatedEvent';
import { FilterChangeCompletedEvent } from './events/FilterChangeCompletedEvent';
import { BusyIndicator } from './BusyIndicator';
export declare abstract class FilterBase implements ISubscriber<FilterChangeInitiatedEvent>, ISubscriber<FilterChangeCompletedEvent> {
    protected readonly eventAggregationService: EventAggregationService;
    private readonly subscriptionOfChangeEvents;
    readonly key: FilterKey;
    readonly busyIndicator: BusyIndicator;
    constructor(filterKey: FilterKey, eventAggregationService: EventAggregationService | undefined);
    notify(event: FilterChangeInitiatedEvent | FilterChangeCompletedEvent): void;
    dispose(): void;
}
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