import { HcModal } from './modal';
import { ApplicationRef, ComponentFactoryResolver, Injector, RendererFactory2, TemplateRef, Type } from '@angular/core';
import { ModalOptions } from './modal-options';
export declare type ModalContentType = Type<{}> | TemplateRef<any>;
export declare class ModalService {
    private _componentFactory;
    private _injector;
    private _applicationRef;
    /** Defaults to false. Restricts multiple modals from being opened on top of each other
     * (an error will be thrown if attempted). It's generally considered bad practice to open multiple
     * models at once, so only change this with good reason.
     */
    allowMultiple: boolean;
    private _zIndexCounter;
    private _renderer;
    private _modalsOpen;
    constructor(_componentFactory: ComponentFactoryResolver, _injector: Injector, _applicationRef: ApplicationRef, _rendererFactory: RendererFactory2);
    /** Opens a new modal either from a Component or a TemplateRef with the options specified in ModalOptions
     * In order to use a component, it must be specified in your module's EntryComponents.
     */
    open<T>(modalContent: ModalContentType, modalOptions?: ModalOptions): HcModal<T>;
}