import { FolderTreeNode } from './../../model/tree/folder-tree-node';
import { QuestionFolder } from '../../model';
export declare class NecFolderTreeService {
    constructor();
    /**
     * 获取文件夹树
     * @param folders 文件夹
     */
    getFolderTree(folders: QuestionFolder[]): FolderTreeNode[];
    /**
     * 组装树
     * @param folders 被柱状的文件夹
     * @param node 树节点
     */
    private packageFolderTree;
    /**
     * 获取某些节点在节点树种所有的子节点 包含自己
     * @param folders 节点集合
     * @param tree 树
     */
    getAllChildFolders(folders: FolderTreeNode[], tree: FolderTreeNode[]): FolderTreeNode[];
    /**
     * 通过文件夹id获取文件夹树中的节点
     */
    getFolderNodesByFolderIds(folderIds: number[], tree: FolderTreeNode[]): FolderTreeNode[];
    /**
     * 添加树种 folderIds 子节点的结构到folders中
     * @param folderIds 文件夹id
     * @param tree  树
     * @param folders 文件夹
     */
    private appendFolders;
    /**
     * 获取没有父节点的文件夹id
     * @param folders 文件夹
     */
    getNoParentFolders(folders: QuestionFolder[]): number[];
}