import { BaseTool } from "./BaseTool";
import type { ToolContext } from "./BaseTool";
import type { ChannelValue, RGBAColor, ChannelColorMap } from "../core";
import type { SphereType } from "./SphereTool";
import type { LayerChannelHostDeps } from "./ToolHost";
/**
 * Manages layer/channel state: active selection, visibility, and channel colors.
 *
 * Extracted from NrrdTools.ts to reduce its size.
 * Follows the same BaseTool + ToolContext + Callbacks pattern as other tools.
 */
export declare class LayerChannelManager extends BaseTool {
    private callbacks;
    constructor(ctx: ToolContext, callbacks: LayerChannelHostDeps);
    /****************************Active Layer/Channel****************************************************/
    setActiveLayer(layerId: string): void;
    getActiveLayer(): string;
    setActiveChannel(channel: ChannelValue): void;
    getActiveChannel(): number;
    /**
     * Set the active sphere type and sync brush/fill color.
     *
     * @example
     * ```ts
     * nrrdTools.setActiveSphereType('nipple');
     * ```
     */
    setActiveSphereType(type: SphereType): void;
    getActiveSphereType(): SphereType;
    /****************************Visibility****************************************************/
    setLayerVisible(layerId: string, visible: boolean): void;
    isLayerVisible(layerId: string): boolean;
    setChannelVisible(layerId: string, channel: ChannelValue, visible: boolean): void;
    isChannelVisible(layerId: string, channel: ChannelValue): boolean;
    getLayerVisibility(): Record<string, boolean>;
    getChannelVisibility(): Record<string, Record<number, boolean>>;
    hasLayerData(layerId: string): boolean;
    /****************************Per-Layer Opacity****************************************************/
    setLayerOpacity(layerId: string, opacity: number): void;
    getLayerOpacity(layerId: string): number;
    getLayerOpacityMap(): Record<string, number>;
    /****************************Channel Colors****************************************************/
    setChannelColor(layerId: string, channel: number, color: RGBAColor): void;
    getChannelColor(layerId: string, channel: number): RGBAColor;
    getChannelHexColor(layerId: string, channel: number): string;
    getChannelCssColor(layerId: string, channel: number): string;
    setChannelColors(layerId: string, colorMap: Partial<ChannelColorMap>): void;
    setAllLayersChannelColor(channel: number, color: RGBAColor): void;
    resetChannelColors(layerId?: string, channel?: number): void;
    /****************************Private Helpers****************************************************/
    /**
     * Sync brush/fill color from the active layer's volume channel color.
     * Falls back to global CHANNEL_HEX_COLORS if volume not available.
     */
    private syncBrushColor;
}