/**
 * @license
 * Copyright Akveo. All Rights Reserved.
 * Licensed under the MIT License. See License.txt in the project root for license information.
 */
import React from 'react';
import { StyleProp, ViewStyle } from 'react-native';
/**
 * Singleton service designed to manage modal components.
 *
 * @type ModalServiceType
 *
 * @method {(element: React.ReactElement<ModalPresentingBased>, config: ModalPresentingConfig) => string} show -
 * Shows component in a modal window. Returns its id.
 *
 * @method {(identifier: string) => string} hide - Hides component from a modal window and returns empty string.
 *
 * @method {(identifier: string, children: React.ReactNode) => void} update - Updates component from a modal window.
 *
 * @example Simple Usage
 *
 * ```
 * import React from 'react';
 * import { Layout, Button, Text, ModalService } from '../..';
 *
 * export const ModalServiceShowcase = () => {
 *
 *   const modalID = '';
 *
 *   const showModal = () => {
 *     const contentElement = this.renderModalContentElement();
 *     this.modalID = ModalService.show(contentElement, { onBackdropPress: this.hideModal });
 *   };
 *
 *   const hideModal = () => {
 *     ModalService.hide(this.modalID);
 *   };
 *
 *   const renderModalContentElement = () => {
 *     return (
 *       <Layout>
 *         <Text>Hi, I'm modal!</Text>
 *       </Layout>
 *     );
 *   };
 *
 *   return (
 *     <Layout>
 *       <Button onPress={showModal}>SHOW MODAL</Button>
 *       <Button onPress={hideModal}>HIDE MODAL</Button>
 *     </Layout>
 *   );
 * }
 * ```
 */
declare class ModalServiceType {
    panel: ModalPresenting | null;
    mount(panel: ModalPresenting | null): void;
    unmount(): void;
    show(element: React.ReactElement, config: ModalPresentingConfig): string;
    update(identifier: string, children: React.ReactElement): void;
    hide(identifier: string): string;
}
export interface ModalPresentingConfig {
    backdropStyle?: StyleProp<ViewStyle>;
    onBackdropPress?: () => void;
}
export interface ModalPresenting {
    show(element: React.ReactElement, config: ModalPresentingConfig): string;
    hide(identifier: string): string;
    update(identifier: string, children: React.ReactElement): void;
}
export declare const ModalService: ModalServiceType;
export {};