import { EventEmitter } from "@angular/core";
import * as i0 from "@angular/core";
export declare class SelectDropDownService {
    openDropdownInstance: EventEmitter<string>;
    closeDropdownInstance: EventEmitter<string>;
    openInstances: string[];
    constructor();
    isOpen(instanceId: any): boolean;
    /**
     * @summary: Open a specific dropdown instance based on the instance ID.
     * @param instanceId: Instance id of the dropdown that must be opened.
     */
    openDropdown(instanceId: string): void;
    /**
     * @summary: Close a specific dropdown instance based on the instance ID.
     * @param instanceId: Instance id of the dropdown that must be closed.
     */
    closeDropdown(instanceId: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<SelectDropDownService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SelectDropDownService>;
}