/**
 *
 * OverlayPanel, also known as Popover, is a container component that can overlay other components on page.
 *
 * [Live Demo](https://www.primereact.org/overlaypanel)
 *
 * @module overlaypanel
 *
 */
import * as React from 'react';
import { CSSTransitionProps as ReactCSSTransitionProps } from 'react-transition-group/CSSTransition';
import { ComponentHooks } from '../componentbase/componentbase';
import { CSSTransitionProps } from '../csstransition';
import { PassThroughOptions } from '../passthrough';
import { IconType, PassThroughType } from '../utils/utils';

export declare type OverlayPanelPassThroughType<T> = PassThroughType<T, OverlayPanelPassThroughMethodOptions>;
export declare type OverlayPanelPassThroughTransitionType = ReactCSSTransitionProps | ((options: OverlayPanelPassThroughMethodOptions) => ReactCSSTransitionProps) | undefined;

/**
 * Custom passthrough(pt) option method.
 */
export interface OverlayPanelPassThroughMethodOptions {
    props: OverlayPanelProps;
    state: OverlayPanelState;
}

/**
 * Custom passthrough(pt) options.
 * @see {@link OverlayPanelProps.pt}
 */
export interface OverlayPanelPassThroughOptions {
    /**
     * Uses to pass attributes to the root's DOM element.
     */
    root?: OverlayPanelPassThroughType<React.HTMLAttributes<HTMLDivElement>>;
    /**
     * Uses to pass attributes to the content's DOM element.
     */
    content?: OverlayPanelPassThroughType<React.HTMLAttributes<HTMLDivElement>>;
    /**
     * Uses to pass attributes to the close button's DOM element.
     */
    closeButton?: OverlayPanelPassThroughType<React.HTMLAttributes<HTMLDivElement>>;
    /**
     * Uses to pass attributes to the close icon's DOM element.
     */
    closeIcon?: OverlayPanelPassThroughType<React.HTMLAttributes<HTMLDivElement>>;
    /**
     * Used to manage all lifecycle hooks
     * @see {@link ComponentHooks}
     */
    hooks?: ComponentHooks;
    /**
     * Used to control React Transition API.
     */
    transition?: OverlayPanelPassThroughTransitionType;
}

/**
 * Defines current inline state in OverlayPanel component.
 */
export interface OverlayPanelState {
    /**
     * Current visible state as a boolean.
     * @defaultValue false
     */
    visible: boolean;
}

/**
 * Custom overlay panel breakpoints
 */
interface OverlayPanelBreakpoints {
    /**
     *  A key-value pair representing a breakpoint and its associated value.
     */
    [key: string]: string;
}

/**
 * Defines valid properties in OverlayPanel component. In addition to these, all properties of HTMLDivElement can be used in this component.
 * @group Properties
 */
export interface OverlayPanelProps extends Omit<React.DetailedHTMLProps<React.HTMLAttributes<HTMLDivElement>, HTMLDivElement>, 'ref'> {
    /**
     * Enables to hide the overlay when outside is clicked.
     * @defaultValue true
     */
    dismissable?: boolean | undefined;
    /**
     * When enabled, displays a close icon at top right corner.
     * @defaultValue false
     */
    showCloseIcon?: boolean | undefined;
    /**
     * Icon to display as close icon.
     */
    closeIcon?: IconType<OverlayPanelProps> | undefined;
    /**
     * Specifies if pressing escape key should hide the preview.
     * @defaultValue true
     */
    closeOnEscape?: boolean | undefined;
    /**
     * DOM element instance where the overlay panel should be mounted. Valid values are any DOM Element and 'self'. The self value is used to render a component where it is located.
     * @defaultValue document.body
     */
    appendTo?: 'self' | HTMLElement | undefined | null | (() => HTMLElement);
    /**
     * Aria label of the close icon.
     * @defaultValue close
     */
    ariaCloseLabel?: string | undefined;
    /**
     * Object literal to define widths per screen size.
     */
    breakpoints?: OverlayPanelBreakpoints | undefined;
    /**
     * The properties of CSSTransition can be customized, except for "nodeRef" and "in" properties.
     */
    transitionOptions?: CSSTransitionProps | undefined;
    /**
     * Callback to invoke when overlay becomes visible.
     */
    onShow?(): void;
    /**
     * Callback to invoke when overlay becomes hidden.
     */
    onHide?(): void;
    /**
     * Used to get the child elements of the component.
     * @readonly
     */
    children?: React.ReactNode | undefined;
    /**
     * Uses to pass attributes to DOM elements inside the component.
     * @type {OverlayPanelPassThroughOptions}
     */
    pt?: OverlayPanelPassThroughOptions;
    /**
     * Used to configure passthrough(pt) options of the component.
     * @type {PassThroughOptions}
     */
    ptOptions?: PassThroughOptions;
    /**
     * When enabled, it removes component related styles in the core.
     * @defaultValue false
     */
    unstyled?: boolean;
}

/**
 * **PrimeReact - OverlayPanel**
 *
 * _OverlayPanel, also known as Popover, is a container component that can overlay other components on page._
 *
 * [Live Demo](https://www.primereact.org/overlaypanel/)
 * --- ---
 * ![PrimeReact](https://primefaces.org/cdn/primereact/images/logo-100.png)
 *
 * @group Component
 */
export declare class OverlayPanel extends React.Component<OverlayPanelProps, any> {
    /**
     * Toggles the visiblity of the overlay.
     * @param {React.SyntheticEvent | undefined | null} event - Browser event.
     * @param {HTMLElement | EventTarget | undefined | null} target - Browser event.
     */
    public toggle(event: React.SyntheticEvent | undefined | null, target?: HTMLElement | EventTarget | undefined | null): void;
    /**
     * Shows the overlay.
     * @param {React.SyntheticEvent | undefined | null} event - Browser event.
     * @param {HTMLElement | EventTarget | undefined | null} target - Browser event.
     */
    public show(event: React.SyntheticEvent | undefined | null, target: HTMLElement | EventTarget | undefined | null): void;
    /**
     * Hides the overlay.
     */
    public hide(): void;
    /**
     * Align the overlay panel to its surroundings.
     */
    public align(): void;
    /**
     * Checks whether the overlay is currently visible.
     * @returns {boolean} A boolean value indicating whether the overlay is visible.
     */
    public isVisible(): boolean;
    /**
     * Used to get container element.
     * @return {HTMLDivElement} Container element
     */
    public getElement(): HTMLDivElement;
}