import { DataSource } from '@angular/cdk/table';
import { CollectionViewer } from '@angular/cdk/collections';
import { BehaviorSubject, Observable, Subscription } from 'rxjs';
import { FormGroup } from '@angular/forms';
export declare abstract class DtDataSource<T> extends DataSource<T> {
    private filterForm?;
    data$: BehaviorSubject<T[]>;
    currentCount: number;
    totalCount: number;
    protected loadingSubject: BehaviorSubject<boolean>;
    loading$: Observable<boolean>;
    sub: Subscription;
    filters: any;
    protected constructor(filterForm?: FormGroup);
    connect(): Observable<T[] | ReadonlyArray<T>>;
    disconnect(collectionViewer: CollectionViewer): void;
    subscribeToFilterForm(): void;
    addFormValuesToFilterObject(value: string): void;
    abstract loadData(): void;
}
export declare class ItemsDataSource<T> extends DtDataSource<T> {
    private items;
    constructor(items: T[], filterForm?: FormGroup);
    loadData(): void;
    paginate(page: number, count: number): T[];
}
export declare class HttpDtDataSource<T> extends DtDataSource<T> {
    private service;
    constructor(service: any, filterForm?: FormGroup);
    loadData(): void;
}