import * as React from 'react';
import type { IIconProps } from '../../Icon';
import type { IRefObject, IRenderFunction, IComponentAs, IStyleFunctionOrObject } from '../../Utilities';
import type { ITheme, IStyle } from '../../Styling';
import type { IFocusZoneProps } from '../../FocusZone';
import type { ITooltipHostProps } from '../../Tooltip';
import type { IButtonProps } from '../../Button';
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumbData {
    props: IBreadcrumbProps;
    renderedItems: IBreadcrumbItem[];
    renderedOverflowItems: IBreadcrumbItem[];
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumb {
    /**
     * Sets focus to the first breadcrumb link.
     */
    focus(): void;
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumbProps extends React.HTMLAttributes<HTMLElement> {
    /**
     * Optional callback to access the `IBreadcrumb` interface. Use this instead of `ref` for accessing
     * the public methods and properties of the component.
     */
    componentRef?: IRefObject<IBreadcrumb>;
    /**
     * Collection of breadcrumbs to render
     */
    items: IBreadcrumbItem[];
    /**
     * Optional class for the root breadcrumb element.
     */
    className?: string;
    /**
     * Render a custom divider in place of the default chevron `>`
     */
    dividerAs?: IComponentAs<IDividerAsProps>;
    /**
     * Render a custom overflow icon in place of the default icon `...`
     */
    onRenderOverflowIcon?: IRenderFunction<IButtonProps>;
    /**
     * Custom component for the overflow button.
     */
    overflowButtonAs?: IComponentAs<IButtonProps>;
    /**
     * The maximum number of breadcrumbs to display before coalescing.
     * If not specified, all breadcrumbs will be rendered.
     */
    maxDisplayedItems?: number;
    /** Custom render function to render each crumb. Default renders as a link. */
    onRenderItem?: IRenderFunction<IBreadcrumbItem>;
    /**
     * Custom render function to render the content within a crumb. Default renders the text.
     */
    onRenderItemContent?: IRenderFunction<IBreadcrumbItem>;
    /**
     * Method that determines how to reduce the length of the breadcrumb.
     * Return undefined to never reduce breadcrumb length.
     */
    onReduceData?: (data: IBreadcrumbData) => IBreadcrumbData | undefined;
    /**
     * Method that determines how to group the length of the breadcrumb.
     * Return undefined to never increase breadcrumb length.
     */
    onGrowData?: (data: IBreadcrumbData) => IBreadcrumbData | undefined;
    /**
     * Aria label for the root element of the breadcrumb (which is a navigation landmark).
     */
    ariaLabel?: string;
    /**
     * Aria label for the overflow button.
     */
    overflowAriaLabel?: string;
    /**
     * Optional index where overflow items will be collapsed.
     * @default 0
     */
    overflowIndex?: number;
    styles?: IStyleFunctionOrObject<IBreadcrumbStyleProps, IBreadcrumbStyles>;
    theme?: ITheme;
    /**
     * Extra props for the root FocusZone.
     */
    focusZoneProps?: IFocusZoneProps;
    /**
     * Extra props for the TooltipHost which wraps each breadcrumb item.
     */
    tooltipHostProps?: ITooltipHostProps;
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumbItem extends React.AllHTMLAttributes<HTMLElement> {
    /**
     * Text to display in the breadcrumb item.
     */
    text: string;
    /**
     * Arbitrary unique string associated with the breadcrumb item.
     */
    key: string;
    /**
     * Callback for when the breadcrumb item is selected.
     */
    onClick?: (ev?: React.MouseEvent<HTMLElement>, item?: IBreadcrumbItem) => void;
    /**
     * URL to navigate to when this breadcrumb item is clicked.
     * If provided, the breadcrumb will be rendered as a link.
     */
    href?: string;
    /**
     * Whether this is the breadcrumb item the user is currently navigated to.
     * If true, `aria-current="page"` will be applied to this breadcrumb item.
     */
    isCurrentItem?: boolean;
    /**
     * A function to render the outer content of the crumb (the link).
     */
    onRender?: IRenderFunction<IBreadcrumbItem>;
    /**
     * A function to render the inner content of the crumb (the text inside the link).
     */
    onRenderContent?: IRenderFunction<IBreadcrumbItem>;
    /**
     * Optional prop to render the item as a heading of your choice.
     *
     * You can also use this to force items to render as links instead of buttons (by default,
     * any item with a `href` renders as a link, and any item without a `href` renders as a button).
     * This is not generally recommended because it may prevent activating the link using the keyboard.
     */
    as?: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6' | 'a';
    /**
     * Optional role for the breadcrumb item (which renders as a button by default)
     */
    role?: string;
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IDividerAsProps extends IIconProps {
    /**
     * Breadcrumb item to left of the divider to be passed for custom rendering.
     * For overflowed items, it will be last item in the list.
     */
    item?: IBreadcrumbItem;
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumbStyleProps {
    className?: string;
    theme: ITheme;
}
/**
 * {@docCategory Breadcrumb}
 */
export interface IBreadcrumbStyles {
    root: IStyle;
    list: IStyle;
    listItem: IStyle;
    chevron: IStyle;
    overflow: IStyle;
    overflowButton: IStyle;
    itemLink: IStyle;
    item: IStyle;
}