import { RadiantElement } from '@ecopages/radiant';
import type { EventEmitter } from '@ecopages/radiant/tools/event-emitter';
export type RuiRadioGroupProps = {
    /** Currently selected value. Reflects to markup. */
    value?: string;
    /** Form field name shared by all radios in the group. */
    name?: string;
    /** Accessible name for the group when no visible legend is slotted. */
    label?: string;
    /** Disable every radio in the group. Default: `false`. */
    disabled?: boolean;
};
export type RuiRadioGroupChangeDetail = {
    value: string;
};
/**
 * `<rui-radio-group>` — a set of radio buttons where only one option may
 * be selected at a time.
 *
 * Implements the WAI-ARIA APG Radio Group pattern using native
 * `<input type="radio">` controls inside a `role="radiogroup"` container.
 * Arrow-key navigation and Space activation are provided by the browser.
 *
 * @see https://www.w3.org/WAI/ARIA/apg/patterns/radio/
 *
 * Keyboard interaction (native radio group):
 * - `Tab` / `Shift+Tab`: move focus into and out of the group
 * - `Arrow` keys: move selection between radios
 * - `Space`: check the focused radio
 *
 * @element rui-radio-group
 *
 * @attr {string} value - Selected radio value. Reflects to markup. Default: `''`.
 * @attr {string} name - Form field name shared by all radios in the group. Default: `''`.
 * @attr {string} label - Accessible name when no visible legend is slotted. Default: `''`.
 * @attr {boolean} disabled - Disables every radio in the group. Default: `false`.
 *
 * @slot - One or more `<label>` children each wrapping a radio input with a unique `value`.
 *
 * @fires rui-change - Emitted after the selected value changes; `detail.value` holds the new value.
 *
 * @remarks
 * Compose with `RuiRadioGroupControl` and `RuiRadio`, or author matching native
 * radio markup directly. This element owns radio value synchronization.
 *
 * @cssclass rui-radio-group - Group surface (`role="radiogroup"`).
 */
export declare class RuiRadioGroup extends RadiantElement {
    value: string;
    name: string;
    label: string;
    disabled: boolean;
    changeEvent: EventEmitter<RuiRadioGroupChangeDetail>;
    protected onConnected(): void;
    syncRadios(): void;
    onRadioChange(event: Event): void;
}