import { EventEmitter } from '@angular/core';
import { TreeNode } from '../../../../../interfaces/things/resources/hierarchical-tree.interface';
import { ComponentUtilsService } from '../../../../../services/component-utils.service';
export declare class TreeNodeViewer {
    utils: ComponentUtilsService;
    resourceSelected: EventEmitter<string>;
    node: TreeNode;
    nodesToHighlight: Array<TreeNode>;
    loaded: boolean;
    toggle: boolean;
    constructor(utils: ComponentUtilsService);
    selectResource(): void;
    passResource(event: any): void;
    get isArray(): boolean;
    toggleSubNode(): Promise<void>;
    pickStyles(id: string): any;
    invertColor(hex: string, bw: boolean): string;
    pad(s: string, size: number): string;
    pickColor(): string;
    pickTextStyle(): {
        color: string;
    };
}