import { type DynamicContext } from 'ag-charts-core';
import type { HighlightNodeDatum } from '../../core/eventsHub';
import type { ChartRegistry } from '../../module/moduleContext';
/**
 * Manages the actively highlighted series/datum for a chart. Tracks the requested highlights from
 * distinct dependents and handles conflicting highlight requests.
 */
export declare class HighlightManager {
    private readonly ctx;
    private readonly highlightStates;
    /**
     * Part of the highlighted node under the pointer, per caller (see `Series.getHighlightPart`). Kept
     * beside the highlight rather than on it: the highlighted datum rolls up unchanged, so consumers
     * that don't care about parts are unaffected, and only a caller supplying a part makes the
     * highlight sensitive to it.
     */
    private readonly highlightParts;
    private readonly pendingUnhighlights;
    unhighlightDelay: number;
    private static readonly HIGHLIGHT_CHANGE_EVENT;
    constructor(ctx: DynamicContext<ChartRegistry>);
    private highlightInViewport;
    updateHighlight(callerId: string, highlightedDatum?: HighlightNodeDatum, delayed?: boolean, inViewport?: boolean, highlightPart?: string): void;
    private maybeEmitChange;
    private applyPendingUnhighlight;
    getActiveHighlight(): HighlightNodeDatum | undefined;
    /** Part of the active highlight, as reported by the caller that owns it. */
    getActiveHighlightPart(): string | undefined;
    destroy(): void;
    private isEqual;
    private idsMatch;
    private pointsMatch;
    private pointsAreEqual;
}