import type { TableGroup, TableGroupLoadMoreDetail, TableLoadMoreMode, TableLoadMoreReason } from './table-types';
export interface TableGroupLoadControllerState {
    enabled: boolean;
    loadMoreMode: TableLoadMoreMode;
    loadMoreThreshold: number;
    containedScroll: boolean;
    groups: TableGroup[];
    viewport: HTMLElement | null;
    sentinels: ReadonlyMap<string, HTMLElement>;
    loadingMoreLabel: string;
    endOfResultsLabel: string;
    rowsLoadedLabel: string;
}
export interface TableGroupLoadControllerOptions {
    state: () => TableGroupLoadControllerState;
    announce: (message: string) => void;
    request: (detail: TableGroupLoadMoreDetail) => void;
}
/** Owns request guards, announcements, and observation for independently loaded groups. */
export declare class TableGroupLoadController {
    private readonly options;
    readonly intersectionSupported: boolean;
    private connected;
    private intersectionObserver;
    private snapshots;
    private pending;
    constructor(options: TableGroupLoadControllerOptions);
    initialize(): void;
    connect(): void;
    disconnect(): void;
    refresh(): void;
    structureChanged(): void;
    dataChanged(): void;
    configurationChanged(): void;
    request(groupId: string, reason: TableLoadMoreReason): void;
    private createSnapshots;
    private snapshot;
    private disconnectObserver;
}
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