import { ControllerService } from './controller.service';
import { ModelService } from './model.service';
import { HelperService } from './helper.service';
import * as i0 from "@angular/core";
export declare class DrillDownService {
    controller: ControllerService;
    model: ModelService;
    helper: HelperService;
    constructor(controller: ControllerService, model: ModelService, helper: HelperService);
    private showDrillDownPage;
    addButton(caption: string, reportParams?: any): void;
    updateVisibility(): void;
    saveState(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DrillDownService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DrillDownService>;
}