import { EventEmitter } from '../../stencil-public-runtime';
import { IconName, IconPosition } from '../icon/exports';
import { ButtonAriaCurrent, ButtonSize, ButtonTarget, ButtonType, ButtonVariant } from './exports';
/**
 * A button can be used by a user to trigger an action. Corresponds to, and is rendered as a,
 * [native button](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/button).
 *
 * Example:
 * ```
 * <r-button variant="primary">Submit</r-button>
 * <r-button variant="secondary" size="small">Cancel</r-button>
 * <r-button variant="primary" disabled>Disabled</r-button>
 * <r-button variant="primary" expanded>Full width</r-button>
 * ```
 *
 * @slot - Button label text
 * @slot icon - Icon placed inside the button (position controlled by the `iconPosition` prop)
 */
export declare class Button {
    host: HTMLRButtonElement;
    /**
     * Reference form element id with which the button is associated.
     */
    form?: string;
    /**
     * Button behavior, corresponding to
     * [native `type` attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/button#attr-type)
     */
    type: ButtonType;
    /**
     * Sets string value for `aria-label` attribute
     * (https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-label)
     */
    rAriaLabel?: string;
    /**
     * Sets string value for `aria-description` attribute
     * (https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-description)
     */
    rAriaDescription?: string;
    /** Visual size */
    size: ButtonSize;
    /** Presentational style */
    variant: ButtonVariant;
    /**
     * Whether to present as a full-width (100%) button.
     *
     * Only primary and secondary buttons can be expanded.
    */
    expanded?: boolean;
    /** Prevents user interaction and applies disabled style */
    disabled?: boolean;
    /** Name of an icon to display within button. */
    icon?: IconName;
    /** Position of an icon within button.
     * Only use it when 'icon' is specified.
     * */
    iconPosition: IconPosition;
    /**
     * URL or a URL fragment that the hyperlink points to.
     * If the property is set, an anchor tag will be rendered.
     */
    href?: string;
    /**
     * Specifies where to display the linked URL.
     * Only applies when an `href` is provided.
     * Special keywords: `"_blank"`, `"_self"`, `"_parent"`, `"_top"`.
     */
    target?: ButtonTarget;
    /**
     * Indicates the current item within a set of related elements.
     * Corresponds to
     * [native `aria-current` attribute](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-current)
     */
    rAriaCurrent?: ButtonAriaCurrent;
    /** Emits `rClick` event on click and keyup */
    rClick: EventEmitter;
    handleIconChange(): void;
    /** Reference to the native button */
    private nativeElement?;
    /** Simulate a button click */
    triggerClick(): Promise<void>;
    /** Set focus on the button */
    setFocus(): Promise<void>;
    /** Remove focus from the button */
    setBlur(): Promise<void>;
    get hasText(): boolean;
    get hasIcon(): boolean;
    get isIconOnly(): boolean;
    get isLink(): boolean;
    private _activateTmpButton;
    private get hasShadowDom();
    private get formEl();
    private get isResetOrSubmit();
    private get hasIconSlot();
    private get ariaCurrentValue();
    /**
     * Handles button action based on its type attribute
     * @param {Event} event event<Event> from onClick on the component
     */
    private handleClick;
    private handleSlotChange;
    componentDidLoad(): void;
    render(): any;
}