/**
 * Copyright 2023-present DreamNum Co., Ltd.
 *
 * 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 type { DocumentDataModel } from '@univerjs/core';
import type { IRenderContext, IRenderModule } from '@univerjs/engine-render';
import { Disposable, ICommandService, LocaleService, ThemeService } from '@univerjs/core';
import { DocSelectionManagerService, DocSkeletonManagerService } from '@univerjs/docs';
import { ILayoutService } from '@univerjs/ui';
import { DocEventManagerService } from './doc-event-manager.service';
export declare class DocHeadingCollapseService extends Disposable implements IRenderModule {
    private readonly _context;
    private readonly _skeletonManager;
    private readonly _eventManager;
    private readonly _selections;
    private readonly _commandService;
    private readonly _layoutService;
    private readonly _buttons;
    private _colors;
    private _expandLabel;
    private _collapseLabel;
    constructor(_context: IRenderContext<DocumentDataModel>, _skeletonManager: DocSkeletonManagerService, _eventManager: DocEventManagerService, _selections: DocSelectionManagerService, _commandService: ICommandService, _layoutService: ILayoutService, themeService: ThemeService, localeService: LocaleService);
    private _getColors;
    private _normalizeSelection;
    private _update;
    dispose(): void;
}