import type { AxisID, CrossLine, DynamicContext } from 'ag-charts-core';
import type { ChartRegistry } from '../../module/moduleContext';
/** An axis's cross lines, as the keyboard proxies see them. */
export interface CrossLinesProxySource {
    readonly axisId: AxisID;
    isVisible(): boolean;
    getInstances(): readonly CrossLine[];
    isKeyboardClickable(crossLine: CrossLine): boolean;
    keyboardClick(crossLine: CrossLine, sourceEvent: Event): void;
}
/** The cross line whose proxy has keyboard focus, and the plugin of its axis. */
export interface CrossLineFocusState {
    readonly plugin: CrossLinesProxySource;
    readonly crossLine: CrossLine;
}
/**
 * Keyboard proxies for clickable cross lines: a single roving-tabindex list across every axis, each item a
 * button bounding its cross line and label. The buttons ignore the pointer, so pointer clicks still reach the
 * series area, which hit-tests cross lines itself.
 */
export declare class CrossLinesDOMProxy {
    private readonly ctx;
    private readonly cleanup;
    private readonly list;
    private readonly buttons;
    /** Drawn beside the button they outline, as a button's text content would replace them. */
    private readonly focusPaths;
    private readonly plugins;
    private entries;
    private dirty;
    private focusedIndex;
    constructor(ctx: DynamicContext<ChartRegistry>);
    attach(plugin: CrossLinesProxySource): void;
    detach(plugin: CrossLinesProxySource): void;
    destroy(): void;
    getFocusState(): CrossLineFocusState | undefined;
    /** Entries are rebuilt only before the scene renders, so one may name a cross line its plugin has since replaced. */
    private liveEntry;
    private update;
    private updateFocusPath;
    private createButton;
}