import { Injector, EventEmitter } from '@angular/core';
import { MatTreeFlatDataSource } from '@angular/material/tree';
import { FlatTreeControl } from '@angular/cdk/tree';
import { Observable } from 'rxjs';
import { IMenuStructure } from '../../models/rights/i-menu-structure';
import { AccessGroupsService } from '../../services/access-groups.service';
export declare class FlatStructure {
    level: number;
    expandable: boolean;
    origin: IMenuStructure;
}
export declare class AccessTreeComponent {
    checkChanged: EventEmitter<any>;
    protected readonly _service: AccessGroupsService;
    private nestedNodeMap;
    private treeFlattener;
    dataSource: MatTreeFlatDataSource<IMenuStructure, FlatStructure>;
    treeControl: FlatTreeControl<FlatStructure>;
    /** The selection for checklist */
    constructor(injector: Injector);
    initialize(accessGroupId: number, expandTree?: boolean): void;
    save(accessGroupId: number): Observable<any>;
    toggle(node: FlatStructure): void;
    getLevel: (node: FlatStructure) => number;
    isExpandable: (node: FlatStructure) => boolean;
    getChildren: (node: IMenuStructure) => IMenuStructure[];
    hasChild: (_: number, _nodeData: FlatStructure) => boolean;
    /**
    * Transformer to convert nested node to flat node. Record the nodes in maps for later use.
    */
    transformer: (node: IMenuStructure, level: number) => FlatStructure;
    /** Toggle the to-do item selection. Select/deselect all the descendants node */
    selectionToggle(node: FlatStructure): void;
    checkState(node: FlatStructure): boolean;
    getParentNode(node: FlatStructure): FlatStructure | null;
}