import { Widget } from "../../core/widget";
export declare class Loader extends Widget {
    static xtype: string;
    static EVENT_CHANGE: string;
    populate<T>(items: T[]): void;
    setNotSelectedValue(...args: any[]): void;
    getNotSelectedValue<T>(): T;
    getAllButtons<T>(): T[];
    getAllLeaves<T>(): T[];
    getSelectedButtons<T>(): T[];
    getNotSelectedButtons<T>(): T[];
    getIndexByValue(value: any): number;
    getNodeById(id: any): any;
    getNodeByValue(value: any): any;
    getValue<T>(): T[];
}