import { type ReactNode } from 'react';
import type { RefObject } from 'react';
import type { ChartWidgetStyleOptions } from '../../../../types';
import type { ChartWidgetProps } from './types';
type UseChartWidgetNarrativeParams = {
    propsWithDrilldown: ChartWidgetProps;
    styleOptions: ChartWidgetStyleOptions | undefined;
};
type UseChartWidgetNarrativeReturn = {
    /** Ref to pass to WidgetContainer — measures the content area for height constraints. */
    contentAreaRef: RefObject<HTMLDivElement | null>;
    /** styleOptions extended with the narrative trigger button injected into the header toolbar when applicable. */
    styleOptionsWithNarrative: ChartWidgetStyleOptions | undefined;
    /** Narrative element for the top slot; non-null only when displayLocation is `above` and narrative is visible. */
    narrativeTopSlot: ReactNode;
    /** Narrative element for the bottom slot; non-null only when displayLocation is `below` and narrative is visible. */
    narrativeBottomSlot: ReactNode;
    /** Narrative element used as widget content; non-null only when displayLocation is `alone` and narrative is visible. */
    narrativeAloneContent: ReactNode;
};
/**
 * Encapsulates all narrative-related logic for ChartWidget:
 * options resolution, visibility state, trigger-button toolbar injection, and height constraints.
 *
 * @internal
 */
export declare function useChartWidgetNarrative({ propsWithDrilldown, styleOptions, }: UseChartWidgetNarrativeParams): UseChartWidgetNarrativeReturn;
export {};