import { TemplateRef, ViewContainerRef } from '@angular/core';
import { Overlay } from '@angular/cdk/overlay';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export interface DropdownConfig {
    templateToRender: TemplateRef<any>;
    viewContainerRef: ViewContainerRef;
    referenceElement: HTMLElement;
    positionParams: any;
    closeOnOutsideClick?: boolean;
}
export interface DropdownRef {
    close: (result?: any) => void;
    afterClosed: Subject<any>;
}
export declare class DynamicDropdownService {
    private overlay;
    private overlayRefs;
    private renderedDropdowns;
    constructor(overlay: Overlay);
    /**
     * Opens a new dropdown with the given configuration.
     */
    open(config: DropdownConfig): DropdownRef;
    /**
     * Exposes a function to check if a given template is rendered.
     */
    isTemplateRendered(template: TemplateRef<any>): boolean;
    /**
     * Creates an overlay with the specified position and configuration.
     */
    private createOverlay;
    /**
     * Creates a flexible position strategy for the dropdown.
     */
    private createPositionStrategy;
    /**
     * Creates the configuration for the overlay.
     */
    private createOverlayConfig;
    /**
     * Attaches the specified template to the overlay.
     */
    private attachTemplateToOverlay;
    /**
     * Sets up listeners for overlay events.
     */
    private setupOverlayListeners;
    /**
     * Creates a subject that emits when the dropdown is closed.
     */
    private createAfterClosedSubject;
    /**
     * Creates a reference for controlling the dropdown.
     */
    private createModalRef;
    /**
     * Closes the dropdown and cleans up.
     */
    private closeModal;
    /**
     * Closes all open dropdowns.
     */
    closeAll(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DynamicDropdownService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DynamicDropdownService>;
}