/**
* @license
* Copyright 2018 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import '../../focus/md-focus-ring.js';
import '../../ripple/ripple.js';
import { LitElement } from 'lit';
import { createValidator, getValidityAnchor } from '../../labs/behaviors/constraint-validation.js';
import { getFormState, getFormValue } from '../../labs/behaviors/form-associated.js';
import { RadioValidator } from '../../labs/behaviors/validators/radio-validator.js';
declare const CHECKED: unique symbol;
declare const radioBaseClass: import("../../labs/behaviors/mixin.js").MixinReturn<import("../../labs/behaviors/mixin.js").MixinReturn<(abstract new (...args: any[]) => import("../../labs/behaviors/element-internals.js").WithElementInternals) & (abstract new (...args: any[]) => import("../../labs/behaviors/focusable.js").Focusable) & typeof LitElement & import("../../labs/behaviors/form-associated.js").FormAssociatedConstructor, import("../../labs/behaviors/form-associated.js").FormAssociated>, import("../../labs/behaviors/constraint-validation.js").ConstraintValidation>;
/**
* A radio component.
*
* @fires input {InputEvent} Dispatched when the value changes from user
* interaction. --bubbles
* @fires change {Event} Dispatched when the value changes from user
* interaction. --bubbles --composed
*/
export declare class Radio extends radioBaseClass {
private readonly maskId;
/**
* Whether or not the radio is selected.
*/
get checked(): boolean;
set checked(checked: boolean);
[CHECKED]: boolean;
/**
* Whether or not the radio is required. If any radio is required in a group,
* all radios are implicitly required.
*/
required: boolean;
/**
* The element value to use in form submission when checked.
*/
value: string;
private readonly container;
private readonly selectionController;
constructor();
protected render(): import("lit-html").TemplateResult<1>;
protected updated(): void;
private handleClick;
private handleKeydown;
disabled: boolean;
name: string;
[getFormValue](): string;
[getFormState](): string;
formResetCallback(): void;
formStateRestoreCallback(state: string): void;
[createValidator](): RadioValidator;
[getValidityAnchor](): HTMLElement;
}
export {};