import type { RuiPlacement } from './placement';
/** Whether `node` is inside the anchor or floating surface. */
export declare function popoverContains(anchor: HTMLElement | null, floating: HTMLElement | null, node: Node | null): boolean;
/** Whether focus left the popover interaction tree. */
export declare function shouldDismissPopoverFocus(anchor: HTMLElement | null, floating: HTMLElement | null, relatedTarget: EventTarget | null): boolean;
/** Whether a pointer event target is outside the popover interaction tree. */
export declare function shouldDismissPopoverPointer(anchor: HTMLElement | null, floating: HTMLElement | null, target: Node | null): boolean;
export type PopoverControllerConfig = {
    getAnchor: () => HTMLElement | null;
    getFloating: () => HTMLElement | null;
    getOpen: () => boolean;
    getPlacement: () => RuiPlacement;
    gap?: number;
    portal?: boolean;
    matchAnchorWidth?: boolean;
    portalContainer?: ParentNode;
};
/**
 * Headless popover lifecycle: portal mount, floating position, and teardown.
 */
export declare class PopoverController {
    private config;
    private cleanupFloating;
    private portalHandle;
    private floatingElement;
    constructor(config: PopoverControllerConfig);
    updateConfig(patch: Partial<PopoverControllerConfig>): void;
    sync(): void;
    contains(node: Node | null): boolean;
    getFloatingElement(): HTMLElement | null;
    teardown(): void;
    destroy(): void;
    private resolveFloating;
    private teardownFloating;
}