import { TemplateResult } from "lit-element";
import { IOverlayBehaviorBaseProperties, OverlayBehavior } from "./overlay-behavior";
export interface IOpenOverlayConfig {
    container: Element | ShadowRoot;
    template: DocumentFragment | HTMLTemplateElement | TemplateResult;
}
export interface IShowOverlayResult<R, C extends IOpenOverlayConfig & Partial<IOverlayBehaviorBaseProperties>, O extends OverlayBehavior<R, C>> {
    overlay: O;
    result: Promise<R | null>;
}
/**
 * Attaches the layout.
 * @param config
 * @param create
 */
export declare function attachOverlay<R extends any, C extends IOpenOverlayConfig & Partial<IOverlayBehaviorBaseProperties>, O extends OverlayBehavior<R, C>>(config: C, create: () => O): Promise<O>;
/**
 * Opens an overlay with a template, attaching the overlay to a container.
 * @param config
 * @param create
 */
export declare function showOverlay<R extends any, C extends IOpenOverlayConfig & Partial<IOverlayBehaviorBaseProperties>, O extends OverlayBehavior<R, C>>(config: C, create: () => O): Promise<IShowOverlayResult<R, C, O>>;