import { AfterViewInit, ChangeDetectorRef, ElementRef, OnDestroy, OnInit, Renderer2 } from '@angular/core';
import { PopupComponent, PopupService } from '../popup';
import * as i0 from "@angular/core";
export declare class DropdownComponent extends PopupComponent implements AfterViewInit, OnInit, OnDestroy {
    protected popupService: PopupService;
    protected renderer: Renderer2;
    protected element: ElementRef;
    protected cdr: ChangeDetectorRef;
    set role(value: 'listbox' | 'menu');
    get role(): 'listbox' | 'menu';
    private _role;
    private _hasFixedRootParent?;
    private _fixedRootParentChecked;
    private _scrollableParent?;
    private readonly scrollEventListener;
    constructor(popupService: PopupService, renderer: Renderer2, element: ElementRef, cdr: ChangeDetectorRef);
    ngAfterViewInit(): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    private onScroll;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropdownComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DropdownComponent, "pa-dropdown", never, { "role": { "alias": "role"; "required": false; }; }, {}, never, ["*"], false, never>;
}