import { Destroyable, Event } from "vtxf-xe2/dist-node/xe2-base-utils";
import { FSceneTree, FSceneTreeJsonValue } from '..';
import { FSceneTreeSetJsonOptionsType, FSceneTreeGetJsonOptionsType } from './FSceneTreeItem';
export declare class FSceneTreeJsonLoading extends Destroyable {
    private _sceneTree;
    private _jsonLoadingEvent;
    get jsonLoadingEvent(): Event<[{
        type: "init" | "loading" | "loaded";
    } | {
        type: "error";
        error?: string | undefined;
    }]>;
    private _setJsonProcessing;
    constructor(_sceneTree: FSceneTree);
    private _syncSetJson;
    private _syncGetJson;
    getJson(options?: FSceneTreeGetJsonOptionsType): {
        root: import("./FSceneTreeItem").FSceneTreeItemJsonValue;
    };
    setJson(value: FSceneTreeJsonValue, options?: FSceneTreeSetJsonOptionsType): void;
    get json(): FSceneTreeJsonValue;
    set json(value: FSceneTreeJsonValue);
    get jsonStr(): string;
    set jsonStr(value: string);
}