/*!
 * @license
 * Copyright © 2005-2025 Hyland Software, Inc. and its affiliates. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { ContentPagingQuery } from '@alfresco/js-api';
import { CollectionViewer, DataSource } from '@angular/cdk/collections';
import { BehaviorSubject, Observable } from 'rxjs';
export declare abstract class InfiniteScrollDatasource<T> extends DataSource<T> {
    protected readonly dataStream: BehaviorSubject<T[]>;
    private isLoading$;
    private subscription;
    private batchesFetched;
    private _itemsCount;
    private _firstItem;
    batchSize: number;
    isLoading: Observable<boolean>;
    get itemsCount(): number;
    get firstItem(): T;
    abstract getNextBatch(pagingOptions: ContentPagingQuery): Observable<T[]>;
    connect(collectionViewer: CollectionViewer): Observable<T[]>;
    disconnect(): void;
    reset(): void;
}