import { Injector } from '@angular/core';
import { NgControl } from '@angular/forms';
import { LegoBaseInputComponent } from '../lego-base-input.component';
import { ButtonGroupComponent } from './button-group.component';
export declare class ButtonGroupOptionComponent extends LegoBaseInputComponent<string> {
    protected injector: Injector;
    control: NgControl;
    key: string;
    value: string;
    parent: ButtonGroupComponent;
    constructor(injector: Injector, parent: ButtonGroupComponent, control: NgControl);
    onChange($event: any): void;
    onTouched(): void;
    readonly keyOrValue: string;
}