import { BaseTool } from "./BaseTool";
import type { ToolContext } from "./BaseTool";
import type { nrrdSliceType, storeExportPaintImageType, loadingBarType } from "../../../types/types";
import type { DataLoaderHostDeps } from "./ToolHost";
/**
 * Handles data loading for NRRD slices and mask volumes.
 *
 * Extracted from NrrdTools.ts to reduce its size.
 * Follows the same BaseTool + ToolContext + Callbacks pattern as other tools.
 */
export declare class DataLoader extends BaseTool {
    private callbacks;
    constructor(ctx: ToolContext, callbacks: DataLoaderHostDeps);
    /****************************Slice Loading****************************************************/
    /**
     * Load all NRRD contrast slices and initialize MaskVolumes with real dimensions.
     */
    setAllSlices(allSlices: Array<nrrdSliceType>): void;
    /****************************Legacy Mask Loading****************************************************/
    private loadingMaskByLayer;
    setMasksData(masksData: storeExportPaintImageType, loadingBar?: loadingBarType): void;
    /****************************NIfTI Mask Loading****************************************************/
    /**
     * Load raw voxel data into MaskVolume layers.
     *
     * Expects pre-extracted voxel bytes (e.g. from useNiftiVoxelData).
     *
     * @param layerVoxels Map of layer ID to raw voxel Uint8Array
     *   Keys should be 'layer1', 'layer2', 'layer3'
     * @param loadingBar Optional loading bar UI
     */
    setMasksFromNIfTI(layerVoxels: Map<string, Uint8Array>, loadingBar?: loadingBarType): void;
}