import { Group } from "ol/layer";
import { MapModel } from "../model/MapModel";
import { InternalConstructorTag } from "../utils/InternalConstructorTag";
import { AbstractLayer } from "./AbstractLayer";
import { GroupLayerCollection } from "./group/GroupLayerCollection";
import { ATTACH_TO_MAP, DETACH_FROM_MAP, LayerDependencies } from "./shared/internals";
import { LayerConfig } from "./shared/LayerConfig";
import { Layer } from "./unions";
/**
 * Configuration options to construct a {@link GroupLayer}.
 *
 * @group Layers
 */
export interface GroupLayerConfig extends LayerConfig {
    /**
     * List of layers that belong to the new group layer.
     *
     * The group layer takes ownership of the given layers: they will be destroyed when the parent is destroyed.
     * A layer must have a unique parent: it can only be added to the map or a single group layer.
     */
    layers: Layer[];
}
/**
 * Represents a group of layers.
 *
 * A group layer contains a collection of {@link Layer} children.
 * Groups can be nested to form a hierarchy.
 *
 * @group Layers
 */
export declare class GroupLayer extends AbstractLayer {
    #private;
    /**
     * @deprecated Prefer using {@link LayerFactory.create} instead of calling the constructor directly
     */
    constructor(config: GroupLayerConfig);
    /**
     * NOTE: Do not use this overload. Use {@link LayerFactory.create} instead.
     *
     * @internal
     */
    constructor(config: GroupLayerConfig, deps: LayerDependencies, internalTag: InternalConstructorTag);
    get type(): "group";
    get legend(): undefined;
    get olSource(): undefined;
    /**
     * Layers contained in this group.
     */
    get layers(): GroupLayerCollection;
    get sublayers(): undefined;
    /**
     * Raw OpenLayers group instance.
     *
     * **Warning:** Do not manipulate the collection of layers in this group directly, changes are not synchronized!
     */
    get olLayer(): Group;
    /** @internal */
    [ATTACH_TO_MAP](map: MapModel): void;
    /** @internal */
    [DETACH_FROM_MAP](): void;
}