import { NgZone, OnDestroy } from '@angular/core';
import { ClrPopoverPosition, ClrPopoverToggleService } from '@clr/angular';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class ClrTreetableActionOverflow implements OnDestroy {
    private smartToggleService;
    private zone;
    empty: boolean;
    smartPosition: ClrPopoverPosition;
    destroyed$: Subject<void>;
    constructor(smartToggleService: ClrPopoverToggleService, zone: NgZone);
    private focusFirstButton;
    closeOverflowContent(event: Event): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ClrTreetableActionOverflow, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ClrTreetableActionOverflow, "clr-tt-action-overflow", never, { "empty": { "alias": "empty"; "required": false; }; }, {}, never, ["*"], false, never>;
}