import { Destroyable, Event, ObservableArrayChangeInfo } from "vtxf-renderer/dist-node/xr-base-utils";
import { FTreeItemType } from "./FTreeItem";
export declare type FTreeClipboardType = 'copy' | 'cut' | 'paste';
export declare type FTreeCommandDataType = {
    type: 'copy';
    event?: ClipboardEvent;
} | {
    type: 'cut';
    event?: ClipboardEvent;
} | {
    type: 'paste';
    event?: ClipboardEvent;
} | {
    type: 'delete';
};
export interface FTreeType<T extends FTreeItemType<T>> {
    readonly root: T;
    readonly itemChildrenChanged: Event<[T]>;
    readonly itemChildrenToChange: Event<[item: T, changeInfos: ObservableArrayChangeInfo<T>[]]>;
    readonly commandEvent: Event<[FTreeCommandDataType]>;
}
export declare class FTreeBase<T> extends Destroyable {
    private _itemChildrenChanged;
    get itemChildrenChanged(): Event<[T]>;
    private _itemChildrenToChange;
    get itemChildrenToChange(): Event<[item: T, changeInfos: ObservableArrayChangeInfo<T>[]]>;
    private _commandEvent;
    get commandEvent(): Event<[FTreeCommandDataType]>;
    constructor();
}