/// <reference types="react" />
import * as React from 'react';
import { IStyle, ITheme } from '../../Styling';
import { IRefObject, IStyleFunctionOrObject } from '../../Utilities';
export interface IShimmer {
}
/**
 * Shimmer component props.
 */
export interface IShimmerProps extends React.AllHTMLAttributes<HTMLElement> {
    /**
     * Optional callback to access the IShimmer interface. Use this instead of ref for accessing
     * the public methods and properties of the component.
     */
    componentRef?: IRefObject<IShimmer>;
    /**
     * Sets the width value of the shimmer wave wrapper.
     * @default 100%
     */
    width?: number | string;
    /**
     * Controls when the shimmer is swapped with actual data through an animated transition.
     * @default false
     */
    isDataLoaded?: boolean;
    /**
     * Elements to render in one line of the Shimmer.
     */
    shimmerElements?: IShimmerElement[];
    /**
     * Custom elements when necessary to build complex placeholder skeletons.
     */
    customElementsGroup?: React.ReactNode;
    /**
     * Localized string of the status label for screen reader
     */
    ariaLabel?: string;
    /**
     * Call to provide customized styling that will layer on top of the variant rules.
     */
    styles?: IStyleFunctionOrObject<IShimmerStyleProps, IShimmerStyles>;
    /**
     * Additional CSS class(es) to apply to the Shimmer container.
     */
    className?: string;
    /**
     * Theme provided by High-Order Component.
     */
    theme?: ITheme;
}
/**
 * Shimmer Elements Interface
 */
export interface IShimmerElement {
    /**
     * Required for every element you intend to use.
     */
    type: ShimmerElementType;
    /**
     * The height of the element (ICircle, ILine, IGap) in pixels.
     * Read more details for each specific element.
     */
    height?: number;
    /**
     * The width value of the element (ILine, IGap) in pixels.
     * Read more details for each specific element.
     */
    width?: number | string;
    /**
     * The vertical alignemt of the element (ICircle, ILine).
     * @default center
     */
    verticalAlign?: 'top' | 'center' | 'bottom';
}
export interface ILine extends IShimmerElement {
    /**
     * Sets the height of the shimmer line in pixels.
     * @default 16px
     */
    height?: number;
    /**
     * Line width value.
     * @default 100%
     */
    width?: number | string;
}
export interface ICircle extends IShimmerElement {
    /**
     * Sets the height of the shimmer circle in pixels.
     * Minimum supported 10px.
     * @default 24px
     */
    height?: number;
}
export interface IGap extends IShimmerElement {
    /**
     * Sets the height of the shimmer gap in pixels.
     * @default 16px
     */
    height?: number;
    /**
     * Gap width value.
     * @default 10px
     */
    width?: number | string;
}
export interface IShimmerStyleProps {
    isDataLoaded?: boolean;
    className?: string;
    theme: ITheme;
    transitionAnimationInterval?: number;
}
export interface IShimmerStyles {
    root?: IStyle;
    shimmerWrapper?: IStyle;
    dataWrapper?: IStyle;
    screenReaderText?: IStyle;
}
export declare enum ShimmerElementType {
    /**
     * Line element type
     */
    line = 1,
    /**
     * Circle element type
     */
    circle = 2,
    /**
     * Gap element type
     */
    gap = 3,
}
export declare enum ShimmerElementsDefaultHeights {
    /**
     * Default height of the line element when not provided by user: 16px
     */
    line = 16,
    /**
     * Default height of the gap element when not provided by user: 16px
     */
    gap = 16,
    /**
     * Default height of the circle element when not provided by user: 24px
     */
    circle = 24,
}