import { PluginProviders } from '@revolist/revogrid';
import { ProjectedGanttRow } from './layout';
import { TimelineScale } from './timeline';
import { DependencyEntity } from './types';
export interface RowFrame {
    readonly top: number;
    readonly height: number;
}
export type RowSizeMap = Readonly<Record<number, number>>;
type TrimmedRows = Readonly<Record<number, boolean>>;
/** Read-only SVG overlay responsible for rendering dependency arrows. */
export declare class GanttDependencyLayer {
    private readonly container;
    private readonly providers;
    private readonly root;
    /**
     * Create and attach the dependency overlay to the grid host element.
     *
     * The layer is intentionally non-interactive in this package version; it
     * renders finish-to-start links only and lets RevoGrid keep ownership of grid
     * input and focus.
     */
    constructor(container: HTMLRevoGridElement, providers: PluginProviders);
    /** Remove all dependency DOM and detach the overlay from the grid host. */
    destroy(): void;
    /**
     * Render the current dependency set for projected rows.
     *
     * Passing `showDependencies = false`, an empty dependency array, or a missing
     * scale clears the layer without mutating the public dependency data.
     */
    render(options: {
        readonly scale: TimelineScale | null;
        readonly dependencies: readonly DependencyEntity[];
        readonly rows: readonly ProjectedGanttRow[];
        readonly showDependencies: boolean;
    }): void;
    private readRowMetrics;
    private measureRenderedRowHeight;
}
/** Build content-space row frames for every projected row. */
export declare function createDimensionRowFrames(rowCount: number, rowHeight: number, rowSizes: RowSizeMap, overrides?: ReadonlyMap<number, RowFrame>, rowOrder?: readonly number[], trimmedRows?: TrimmedRows): ReadonlyMap<number, RowFrame>;
export {};
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