import { EventEmitter } from '../../stencil-public-runtime';
import { ToggleButtonEmphasis, ToggleButtonSize } from '../../utils/constants';
/**
 * @slot default - Child content of the toggle button.
 */
export declare class NvTogglebutton {
    el: HTMLNvTogglebuttonElement;
    /****************************************************************************/
    /**
     * Determines how large or small the togglebutton appears, allowing for
     * customization of the togglebutton's dimensions to fit different design
     * specifications and user needs.
     */
    readonly size: `${ToggleButtonSize}`;
    /**
     * The value to associated with the button when selected in a
     * Togglebuttongroup.
     */
    readonly value: string;
    /**
     * Prevents all interaction, rendering the toggle in a non-interactive state.
     */
    readonly disabled: boolean;
    /**
     * Whether the button is active or not. Will not toggle automatically but
     * needs to be controlled externally.
     */
    readonly active: boolean;
    /**
     * Make it more or less visually prominent to users.
     */
    readonly emphasis: `${ToggleButtonEmphasis}`;
    /****************************************************************************/
    private handleClick;
    /****************************************************************************/
    handleKeyDown(event: KeyboardEvent): void;
    /****************************************************************************/
    /**
     * Emitted when the button is toggled. Will bubble up so that the
     * nv-togglebuttongroup can update the state.
     */
    toggled: EventEmitter<{
        /** The value associated with the button. */
        value: string;
        /** If the button is active when clicked. */
        active: boolean;
    }>;
    /****************************************************************************/
    render(): any;
}