import { EventEmitter } from '../../stencil-public-runtime';
import { IconName } from '../icon/exports';
/**
 * A radio button is used to select a single option in a list.
 *
 * Example
 * ```
 * <!-- Simple usage -->
 * <r-radio-button name="plan" value="basic">Basic plan</r-radio-button>
 *
 * <!-- With title and description -->
 * <r-radio-button name="plan" value="premium">
 *   <r-radio-button-title>Premium plan</r-radio-button-title>
 *   <r-radio-button-description>All features included</r-radio-button-description>
 * </r-radio-button>
 * ```
 *
 * @slot - Default label text (shorthand when `r-radio-button-title` is not used)
 * @slot leading - Leading visual element (e.g. icon) placed before the control
 * @slot title - Primary label text (use `r-radio-button-title`)
 * @slot description - Secondary descriptive text (use `r-radio-button-description`)
 * @slot trailing - Trailing element placed after the label area (use `r-radio-button-trailing`)
 */
export declare class RadioButton {
    /** Host DOM element */
    host: HTMLRRadioButtonElement;
    /** Specifies the `id` of the `<form>` to which the element belongs */
    form?: string;
    /** Name of element (data) within a form */
    name: string;
    /** Value of element data within a form */
    value: any;
    /** Specifies if element must be ignored during validation of the form elements */
    novalidate?: boolean;
    /** Apply validation error visual style */
    invalid?: boolean;
    /** Defines if an element shall be validated */
    required?: boolean;
    /** Prevents user interaction and applies disabled style */
    disabled?: boolean;
    /** Automatically focus the radio button when the component is mounted. Note: Only one element per page should have autofocus set to true, following browser standard behavior. */
    autofocus?: boolean;
    /** When true the radio is selected */
    checked?: boolean;
    /**
     * Optional hint, visually presented under the radio button,
     * giving additional context to the user
     */
    hint?: string;
    /** Custom validation error message */
    error?: string;
    /** Additional directions for radio-button */
    description?: string;
    /** Icon name from the set */
    icon?: IconName;
    /** Emits `rChange` event on the `<r-radio-button>` when status changes */
    rChange: EventEmitter<{
        element: HTMLRRadioButtonElement;
        value: any;
        checked: boolean;
    }>;
    /** Emits `rReset` event on the `<r-radio-button>` onReset changes its status */
    rReset: EventEmitter<{
        element: HTMLRRadioButtonElement;
        value: any;
        checked: boolean;
    }>;
    /** Emits `radioButtonClick` event on the `<r-radio-button>` on click event */
    radioButtonClick: EventEmitter<Event>;
    /** Emits `rChange` event on the `<r-radio-button>` when on keydown event */
    radioButtonKeydown: EventEmitter<Event>;
    /** Emits `radioButtonDeselect` event on the `<r-radio-button>` when on deselect event */
    radioButtonDeselect: EventEmitter<{
        element: HTMLRRadioButtonElement;
        value: any;
        checked: boolean;
    }>;
    /** Sets focus on the radio button element */
    setFocus(): Promise<void>;
    /** Blurs the radio button element */
    setBlur(): Promise<void>;
    /** Selects the radio button element */
    select(): Promise<void>;
    /**
     * Unchecks all radio buttons in the associated group or form.
     */
    uncheckAll(): Promise<void>;
    private initialState;
    /** Reference to the native input element */
    private nativeEl;
    /** Unique id */
    private uniqueId;
    /** Reference to the radio button elements */
    private get radioElements();
    /** Get the text content of the slot */
    private get slotTextValue();
    /** Identify wrapping radio group element */
    private get groupEl();
    private get groupName();
    /** Identify wrapping form element */
    private get parentFormEl();
    /** Check if the radio button is leading */
    private get isLeading();
    /** Check if the radio button is trailing */
    private get isTrailing();
    private onClick;
    private onKeydown;
    private onFocus;
    private onBlur;
    private get shouldAutofocus();
    private applyAutofocus;
    componentWillLoad(): void;
    componentDidLoad(): void;
    render(): any;
}