import { EventEmitter } from '@angular/core';
export declare class ButtonGroup {
    items: any;
    model: number;
    color: string;
    primary: string;
    secondary: string;
    cssClass: string;
    modelChange: EventEmitter<{}>;
    btn_class: string;
    hover: boolean;
    ngOnInit(): void;
    ngOnChanges(changes: any): void;
    setHover(state: boolean): void;
    toggle(index: number): void;
    private loadClasses();
}