import { OnDestroy } from '@angular/core';
import { Observable, Subscription } from 'rxjs';
import { DataService, DataSource } from '../shared/data.service';
export declare class MainComponent implements OnDestroy {
    /**
     * Data sources observable
     */
    dataSources: Observable<DataSource[]>;
    /**
     * Data subscription for the data-sources
     */
    dataSubscription: Subscription;
    /**
     * Boolean to show initial info message in the data view
     */
    showDataViewMessage: boolean;
    constructor(dataService: DataService);
    /**
     * Gets padding according to the level of hierarchy of the data table
     * @param level level in hierarchy of the data table
     * @returns a padding value in rems
     */
    getPadding(level: number): number;
    /**
     * on destroy lifecycle hook
     */
    ngOnDestroy(): void;
}