/**
 *
 * Galleria is a content gallery component.
 *
 * [Live Demo](https://www.primereact.org/galleria)
 *
 * @module galleria
 *
 */
import * as React from 'react';
import { CSSTransitionProps } from '../csstransition';

/**
 * Custom galleria responsive options
 */
interface GalleriaResponsiveOptions {
    /**
     * Breakpoint for this responsive option.
     */
    breakpoint: string;
    /**
     * Number of visible items.
     */
    numVisible: number;
}

/**
 * Custom complete method event.
 * @see {@link GalleriaProps.onItemChange}
 * @event
 */
interface GalleriaItemChangeEvent {
    /**
     * index of the new item.
     */
    index: number;
}

/**
 * Defines valid properties in Galleria component. In addition to these, all properties of HTMLDivElement can be used in this component.
 * @group Properties
 */
export interface GalleriaProps extends Omit<React.DetailedHTMLProps<React.HTMLAttributes<HTMLDivElement>, HTMLDivElement>, 'ref'> {
    /**
     * An array of objects to display.
     */
    value?: any[] | undefined;
    /**
     * Index of the first item.
     * @defaultValue 0
     */
    activeIndex?: number | undefined;
    /**
     * Whether to display the component on fullscreen.
     * @defaultValue false
     */
    fullScreen?: boolean | undefined;
    /**
     * Function that gets an item in the value and returns the content for preview item.
     * @param {*} item - Current item.
     */
    item?(item: any): React.ReactNode | undefined;
    /**
     * Function that gets an item in the value and returns the content for thumbnail item.
     * @param {*} item - Current thumbnail item.
     */
    thumbnail?(item: any): React.ReactNode | undefined;
    /**
     * Function that gets an item in the value and returns the content for indicator item.
     * @param {number} index - Index of the indicator.
     */
    indicator?(index: number): React.ReactNode | undefined;
    /**
     * Custom header template.
     */
    header?: React.ReactNode | undefined;
    /**
     * Custom footer template.
     */
    footer?: React.ReactNode | undefined;
    /**
     * Number of items per page.
     * @defaultValue 3
     */
    numVisible?: number | undefined;
    /**
     * An array of options for responsive design.
     */
    responsiveOptions?: GalleriaResponsiveOptions[] | undefined;
    /**
     * Whether to display navigation buttons in item container.
     * @defaultValue false
     */
    showItemNavigators?: boolean | undefined;
    /**
     * Whether to display navigation buttons in thumbnail container.
     * @defaultValue true
     */
    showThumbnailNavigators?: boolean | undefined;
    /**
     * Whether to display navigation buttons on item container's hover.
     * @defaultValue false
     */
    showItemNavigatorsOnHover?: boolean | undefined;
    /**
     * When enabled, item is changed on indicator item's hover.
     * @defaultValue false
     */
    changeItemOnIndicatorHover?: boolean | undefined;
    /**
     * Defines if scrolling would be infinite.
     * @defaultValue false
     */
    circular?: boolean | undefined;
    /**
     * Items are displayed with a slideshow in autoPlay mode.
     * @defaultValue false
     */
    autoPlay?: boolean | undefined;
    /**
     * Time in milliseconds to scroll items.
     * @defaultValue 4000
     */
    transitionInterval?: number | undefined;
    /**
     * Function that gets an item in the value and returns the content for caption item.
     * @param {*} item - Browser event.
     */
    caption?(item: any): React.ReactNode | undefined;
    /**
     * Whether to display thumbnail container.
     * @defaultValue true
     */
    showThumbnails?: boolean | undefined;
    /**
     * Position of thumbnails. Valid values are "bottom", "top", "left" and "right".
     * @defaultValue bottom
     */
    thumbnailsPosition?: 'top' | 'bottom' | 'left' | 'right' | undefined;
    /**
     * Whether to display indicator container.
     * @defaultValue false
     */
    showIndicators?: boolean | undefined;
    /**
     * When enabled, indicator container is displayed on item container.
     * @defaultValue false
     */
    showIndicatorsOnItem?: boolean | undefined;
    /**
     * Position of indicators. Valid values are "bottom", "top", "left" and "right".
     * @defaultValue bottom
     */
    indicatorsPosition?: 'top' | 'bottom' | 'left' | 'right' | undefined;
    /**
     * Base zIndex value to use in layering.
     * @defaultValue 0
     */
    baseZIndex?: number | undefined;
    /**
     * The properties of CSSTransition can be customized, except for "nodeRef" and "in" properties.
     */
    transitionOptions?: CSSTransitionProps | undefined;
    /**
     * Callback to invoke after changing item.
     * @param {GalleriaItemChangeEvent} event - Custom change item.
     */
    onItemChange?(event: GalleriaItemChangeEvent): void;
    /**
     * Callback to invoke when modal becomes visible.
     */
    onShow?(): void;
    /**
     * Callback to invoke when modal becomes hidden.
     */
    onHide?(): void;
    /**
     * Used to get the child elements of the component.
     * @readonly
     */
    children?: React.ReactNode | undefined;
}

/**
 * **PrimeReact - Galleria**
 *
 * _Galleria is a content gallery component._
 *
 * [Live Demo](https://www.primereact.org/galleria/)
 * --- ---
 * ![PrimeReact](https://primefaces.org/cdn/primereact/images/logo-100.png)
 *
 * @group Component
 */
export declare class Galleria extends React.Component<GalleriaProps, any> {
    /**
     * Used to show the overlay.
     */
    public show(): void;
    /**
     * Used to hide the overlay.
     */
    public hide(): void;
    /**
     * Whether auto-play feature is currently active.
     */
    public isAutoPlayActive(): boolean;
    /**
     * Used to start the slideshow.
     */
    public startSlideShow(): void;
    /**
     * Used to stop the slideshow.
     */
    public stopSlideShow(): void;
    /**
     * Used to get container element.
     * @return {HTMLDivElement} Container element
     */
    public getElement(): HTMLDivElement;
}