/**
 * @license
 * Copyright (C) Gnucoop soc. coop.
 *
 * This file is part of the Advanced JSON forms (ajf).
 *
 * Advanced JSON forms (ajf) is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * Advanced JSON forms (ajf) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Advanced JSON forms (ajf).
 * If not, see http://www.gnu.org/licenses/.
 *
 */
import { DataSource } from '@angular/cdk/collections';
import { Observable } from 'rxjs';
export type ChoicesOriginChoiceEntry = {
    label: string;
    value: string;
};
export declare class ChoicesOriginDataSource extends DataSource<ChoicesOriginChoiceEntry> {
    private _choices;
    private _choicesObs;
    constructor();
    connect(): Observable<ChoicesOriginChoiceEntry[]>;
    disconnect(): void;
    updateChoices(choices: ChoicesOriginChoiceEntry[]): void;
}