/**
 * AnnotationTrack — MSA header track displaying colored region bands.
 *
 * Shows FR/CDR regions (or any structure annotations) as colored horizontal
 * rectangles with centered labels. This track is designed to be the primary
 * (first) track in the MSA header when annotation data exists.
 */
import * as DG from 'datagrok-api/dg';
import { MSAHeaderTrack } from './sequence-position-scroller';
interface RegionSpan {
    name: string;
    color: string;
    startIdx: number;
    endIdx: number;
    /** Scheme position name for start, e.g. "27" in IMGT */
    startPos: string;
    /** Scheme position name for end */
    endPos: string;
    /** Source numbering scheme, e.g. "IMGT" */
    sourceScheme?: string;
    description?: string;
}
export declare class AnnotationTrack extends MSAHeaderTrack {
    private tableCol;
    private regions;
    private posList;
    private _cacheVersion;
    constructor(tableCol: DG.Column<string>, title?: string);
    /** Returns true if there are region annotations to display. */
    hasRegions(): boolean;
    /** Returns the region covering the given 0-based position index, or null. */
    getRegionAtPosition(posIdx: number): RegionSpan | null;
    /** Override: provide tooltip content for the annotation track. */
    getTooltipContent(position: number, _monomer: string | null): HTMLElement | null;
    draw(x: number, y: number, width: number, height: number, windowStart: number, positionWidth: number, totalPositions: number, _currentPosition: number): void;
    private _ensureUpToDate;
    private _rebuildRegions;
    private _getPosList;
    private _defaultColor;
}
export {};
//# sourceMappingURL=annotation-track.d.ts.map