export type ListboxActivation = 'first' | 'last' | 'none';
export type ListboxPopoverBehaviorConfig = {
    getAnchor: () => HTMLElement | null;
    getFloating: () => HTMLElement | null;
    getOpen: () => boolean;
    getOptions: () => HTMLElement[];
    getActiveDescendantHost: () => HTMLElement | null;
    getOptionIdPrefix: () => string;
};
export type ListboxKeydownConfig = {
    isOpen: boolean;
    canUseSpace: boolean;
    closesOnTab: boolean;
    enterWhenClosed: 'open' | 'ignore';
    enterWithoutActive: 'close' | 'ignore';
    onOpen: (activation?: ListboxActivation) => void;
    onClose: (reason: 'arrow' | 'escape' | 'enter' | 'tab') => void;
    onSelectActive: () => void;
    onEscapeWhenClosed?: () => void;
};
/**
 * Shared state and interaction plumbing for listbox-backed popovers.
 *
 * @remarks Select and combobox intentionally keep their selection and filtering
 * policies local. This behavior owns only the state machine both controls must
 * agree on: active-descendant navigation, popover positioning, and dismissal.
 */
export declare class ListboxPopoverBehavior {
    private readonly config;
    private readonly popoverController;
    private activeIndex;
    private visualFocus;
    constructor(config: ListboxPopoverBehaviorConfig);
    get activeOptionIndex(): number;
    get hasVisualFocus(): boolean;
    ensureOptionIds(): void;
    getVisibleOptions(): HTMLElement[];
    clearActiveOption(): void;
    setActiveOption(index: number): void;
    moveActive(direction: 1 | -1, onOpen: (activation: ListboxActivation) => void): void;
    /** Handles the APG keys shared by select-only and autocomplete listboxes. */
    handleKeydown(event: KeyboardEvent, options: ListboxKeydownConfig): void;
    syncPopoverPosition(): void;
    shouldDismissFocus(relatedTarget: EventTarget | null): boolean;
    shouldDismissPointer(target: Node | null): boolean;
    destroy(): void;
}