import { CSSProperties, ReactNode, default as React } from 'react';
import { ComboboxOptionState } from '../../../.deps/ui/core-web/src';
import { SelectKey } from './SingleSelect';
/** A flattened listbox row: a group heading, or a single option. */
export type SelectRow<T extends object, V extends SelectKey> = {
    kind: 'heading';
    key: string;
    label: string;
} | {
    kind: 'option';
    key: string;
    option: T;
    label: string;
    value: V;
    disabled: boolean;
};
/** Estimated row heights and inner spacing for the virtualizer. */
export interface SelectVirtualizerLayout {
    rowHeight: number;
    headingHeight: number;
    gap: number;
    padding: number;
}
export interface SingleSelectVirtualizedListboxProps<T extends object, V extends SelectKey> {
    rows: Array<SelectRow<T, V>>;
    layout: SelectVirtualizerLayout;
    className: string;
    optionClassName: string;
    style?: CSSProperties;
    /**
     * CSS selector of the listbox's scrolling ancestor (the popover on desktop, the dialog body on
     * small screens). Resolved via `listbox.closest(scrollSelector)`.
     */
    scrollSelector: string;
    /** Index (into `rows`) of the active option, or `null`; force-mounted so its id stays in the DOM. */
    activeRowIndex: number | null;
    /** Index (into `rows`) of the selected option to reveal on open, or `null`. */
    selectedRowIndex: number | null;
    /** Renders a single option row's inner content (indicators + `renderOption`) from the option state. */
    renderOptionRow: (option: T, state: ComboboxOptionState<V>) => ReactNode;
}
/**
 * The virtualized `Combobox.Listbox`: a `role="listbox"` holding an inner `role="presentation"` sizing
 * element (its height is the full list size) with the windowed rows positioned absolutely on top of it.
 * Positioning + the measure ref go directly on each `Combobox.Option` / heading element, so no
 * non-presentation wrapper sits between the listbox and its options. Shared by the desktop popover and
 * the small-screen dialog search paths.
 */
export declare function SingleSelectVirtualizedListbox<T extends object, V extends SelectKey>({ rows, layout, className, optionClassName, style, scrollSelector, activeRowIndex, selectedRowIndex, renderOptionRow, ...rest }: SingleSelectVirtualizedListboxProps<T, V>): React.JSX.Element;