/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { ExpandableDirective } from '@progress/kendo-angular-treelist';
import * as i0 from "@angular/core";
/**
 * A directive which controls the expanded state of the items.
 */
export declare class GanttExpandableDirective extends ExpandableDirective {
    /**
     * Defines the item key that will be stored in the expandedKeys collection.
     * Defaults to the task data item ID field,
     * which is specified in the [`taskModelFields`]({% slug api_gantt_ganttcomponent %}#toc-taskmodelfields) object.
     *
     */
    set expandBy(value: string | ((dataItem: any) => any));
    static ɵfac: i0.ɵɵFactoryDeclaration<GanttExpandableDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<GanttExpandableDirective, "[kendoGanttExpandable]", ["kendoGanttExpandable"], { "expandBy": { "alias": "expandBy"; "required": false; }; }, {}, never, never, true, never>;
}