import { LitElement } from 'lit';
import { InputSize, ThemeColor } from '../../internal/constants/styleConstants.js';
import '../button/arc-button.js';
import '../spinner/arc-spinner.js';
/**
 * The type of the button group.
 * @typedef {string} ButtonGroupType
 */
export declare type ButtonGroupType = 'group-filled' | 'group-outlined';
/**
 * The button group types.
 * @typedef {Object} ButtonGroupTypes
 */
declare type ButtonGroupTypes = {
    [key in ButtonGroupType]: ButtonGroupType;
};
/**
 * The button group types.
 * @type {ButtonGroupTypes}
 * @constant
 */
export declare const BUTTON_GROUP_TYPES: ButtonGroupTypes;
/**
 * A button group component that groups buttons together.
 * @element arc-button-group
 * @slot - The default slot where buttons are placed.
 * @slot menu - The slot where the dropdown menu is placed.
 */
export default class ArcButtonGroup extends LitElement {
    static tag: string;
    static styles: import("lit").CSSResult[];
    /**
     * The orientation of the button group.
     * @attr {boolean} column
     * @type {boolean}
     * @default false
     */
    column: boolean;
    /**
     * The color of the button group.
     * @attr {default|primary|secondary|error|warning|info|success} color
     * @type {ThemeColor}
     * @default default
     */
    color: ThemeColor;
    /**
     * The size of the button group.
     * @attr {small|medium|large} size
     * @type {InputSize}
     * @default medium
     */
    size: InputSize;
    /**
     * The type of the button group.
     * @attr {group-filled|group-outlined} type
     * @type {ButtonGroupType}
     * @default group-filled
     */
    type: ButtonGroupType;
    /**
     * The disabled state of the button group.
     * @attr {boolean} disabled
     * @type {boolean}
     * @default false
     */
    disabled: boolean;
    /**
     * The loading state of the button group.
     * @attr {boolean} loading
     * @type {boolean}
     * @default false
     */
    loading: boolean;
    /**
     * Button group buttons.
     * @private
     * @type {HTMLSlotElement}
     * @internal
     */
    private buttons;
    /**
     * Button group menu.
     * @private
     * @type {HTMLSlotElement}
     * @internal
     */
    private menu;
    /**
     * Ensures that the menu slot contains correct elements.
     * @throws {Error} - If the menu slot contains incorrect elements.
     * @private
     * @internal
     */
    private ensureMenu;
    /**
     * Updates the menu slot.
     * @param {Map<string | number | symbol, unknown>} props - Changed properties.
     * @private
     * @internal
     */
    private updateMenu;
    /**
     * Ensures that the button group contains correct elements.
     * @throws {Error} - If the button group does not contain arc-button-group-button elements.
     * @throws {Error} - If the button group contains incorrect elements.
     * @private
     * @internal
     */
    private ensureButtonGroupButtons;
    /**
     * Updates the button group buttons.
     * @param {Map<string | number | symbol, unknown>} props - Changed properties.
     * @private
     * @internal
     */
    private updateButtons;
    protected firstUpdated(props: Map<string | number | symbol, unknown>): void;
    protected updated(props: Map<string | number | symbol, unknown>): void;
    protected render(): import("lit-html").TemplateResult<1 | 2>;
}
export {};