import { Accessor } from "../../data/getAccessor";
import { ArrayAdapter, ArrayAdapterConfig, RecordStoreCache } from "./ArrayAdapter";
import { DataAdapterRecord } from "./DataAdapter";
import { RenderingContext } from "../RenderingContext";
import { Instance } from "../Instance";
import { View } from "../../data/View";
import { Sorter } from "../Prop";
export interface DefaultTreeNode {
    $level?: number;
    $expanded?: boolean;
    $leaf?: boolean;
    $loading?: boolean;
    $loaded?: boolean;
    [key: string]: any;
}
export interface ExpandedState {
    current?: Set<string | number>;
    next: Set<string | number>;
}
export interface TreeAdapterConfig extends ArrayAdapterConfig {
    childrenField?: string;
    expandedField?: string;
    leafField?: string;
    loadingField?: string;
    loadedField?: string;
    onLoadError?: (response: any) => void;
    foldersFirst?: boolean;
    hideRootNodes?: boolean;
    restoreExpandedNodesOnLoad?: boolean;
    load?: (context: RenderingContext, instance: Instance, node: any) => Promise<any[] | null | undefined> | any[] | null | undefined;
    onLoad?: (context: RenderingContext, instance: Instance, node: any) => Promise<any[] | null | undefined> | any[] | null | undefined;
}
export declare class TreeAdapter<T extends object = DefaultTreeNode> extends ArrayAdapter<T> {
    childrenField: string;
    expandedField: string;
    leafField: string;
    loadingField: string;
    loadedField: string;
    onLoadError?: (response: any) => void;
    foldersFirst: boolean;
    hideRootNodes: boolean;
    restoreExpandedNodesOnLoad?: boolean;
    load?: (context: RenderingContext, instance: Instance, data: T) => Promise<any[]> | any[];
    onLoad?: (context: RenderingContext, instance: Instance, data: T) => Promise<any[]> | any[];
    protected childrenAccessor?: Accessor;
    protected expandedState?: ExpandedState;
    constructor(config?: TreeAdapterConfig);
    init(): void;
    mapRecords(context: RenderingContext, instance: Instance & Partial<RecordStoreCache>, data: T[], parentStore: View, recordsAccessor?: Accessor): DataAdapterRecord<T>[];
    protected processList(context: RenderingContext, instance: Instance & Partial<RecordStoreCache>, level: number, parentKey: string, nodes: DataAdapterRecord<T>[], result: DataAdapterRecord<T>[]): void;
    protected processNode(context: RenderingContext, instance: Instance & Partial<RecordStoreCache>, level: number, result: DataAdapterRecord<T>[], record: DataAdapterRecord<T>): void;
    sort(sorters?: Sorter[]): void;
}
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