import { AfterContentInit, ElementRef, OnChanges, QueryList, SimpleChanges, TemplateRef, Renderer2, ChangeDetectorRef } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { GasForm } from '../../gas-form.namespace';
import { GasRadioComponent } from '../radio/gas-radio.component';
import { GasFormBaseComponent } from '../../gas-form-base-component';
export declare class GasRadioGroupComponent<T = GasForm.GasFilterFormBaseValue> extends GasFormBaseComponent implements ControlValueAccessor, OnChanges, AfterContentInit {
    changeDetectorRef: ChangeDetectorRef;
    elementRef: ElementRef;
    renderer: Renderer2;
    optionRefs: QueryList<GasRadioComponent<T>>;
    label: string | TemplateRef<ElementRef>;
    error: string;
    direction: string | 'row' | 'column';
    defaultValue: T;
    constructor(changeDetectorRef: ChangeDetectorRef, elementRef: ElementRef, renderer: Renderer2);
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterContentInit(): void;
    isButton(): boolean;
    private setDefaultValue;
    private setInputState;
}