import { ElementRef } from '@angular/core';
import { ValidationErrors } from '@angular/forms';
import { BaseListControlComponent } from '../../utils/base-list-control.component';
export declare class FormRadioComponent extends BaseListControlComponent {
    listRadioElement: ElementRef;
    private _isTouched;
    readonly isEmpty: boolean;
    readonly value: any;
    readonly invalid: boolean;
    readonly valid: boolean;
    readonly errorMessages: Array<string>;
    writeValue(value: any): void;
    validate(): ValidationErrors;
    toggle(index: any, event: any): void;
    reset(): void;
}