import type { Snippet } from 'svelte';
import type { HTMLAnchorAttributes, HTMLButtonAttributes, KeyboardEventHandler } from 'svelte/elements';
import type { NeoImageProps } from '../media/neo-image.model.js';
import type { HTMLActionProps } from '../utils/action.utils.js';
import type { BorderRadiusInput } from '../utils/border.utils.js';
import type { Color } from '../utils/colors.utils.js';
import type { HTMLFlexProps, HTMLNeoBaseElement, HTMLRefProps, SvelteEvent } from '../utils/html-element.utils.js';
import type { BlurElevation, BlurElevationString, ShadowElevation, ShadowElevationString, ShadowHoverElevation, ShadowHoverElevationsString } from '../utils/shadow.utils.js';
export type NeoButtonBlur = BlurElevation | BlurElevationString;
export type NeoButtonElevation = ShadowElevation | ShadowElevationString;
export type NeoButtonHoverElevation = ShadowHoverElevation | ShadowHoverElevationsString;
export type NeoButtonActiveElevation = ShadowHoverElevation | ShadowHoverElevationsString;
export interface NeoButtonStates {
    /**
     * The url to navigate to when the anchor is clicked.
     */
    href?: string;
    /**
     * If true, the button will be disabled and a spinner will be displayed alongside the text.
     * If an icon is provided, the spinner will replace the icon.
     */
    loading?: boolean;
    /**
     * Disables all button interactions.
     */
    disabled?: boolean;
    /**
     * If true, the button will ignore click events like a disabled button, but will still be interactive.
     */
    readonly?: boolean;
    /**
     * If true, the button will be disabled and a loading skeleton will be displayed instead of the text.
     */
    skeleton?: boolean;
    /**
     * If the button is currently hovered.
     */
    hovered?: boolean;
    /**
     * If the button is currently focused.
     */
    focused?: boolean;
    /**
     * If true, the button will not propagate the click event to its parent elements.
     * This is useful for preventing unwanted side effects when clicking the button.
     */
    propagation?: boolean;
    /**
     * If true, the button will act as a toggle button.
     */
    toggle?: boolean;
    /**
     * Bindable value for the toggle state.
     * @bindable
     */
    checked?: boolean;
}
export type NeoButtonContext = NeoButtonStates & {
    /**
     * Reference to the button HTML element.
     */
    ref?: HTMLRefProps['ref'];
    /**
     * The current state of the button.
     */
    pressed: boolean;
};
export type NeoButtonProps<Tag extends keyof HTMLElementTagNameMap = 'button'> = {
    /**
     * Snippet to display as the button content.
     */
    children?: Snippet<[NeoButtonContext]>;
    /**
     * Optional snippet or text to display as the button label.
     */
    label?: Snippet<[NeoButtonContext]> | string;
    /**
     * Optional icon snippet to display before the text.
     */
    icon?: Snippet<[NeoButtonContext]> | string;
    /**
     * The HTML tag to use for the button.
     * If an `href` is provided, the tag will default to `'a'`.
     * @default 'button'
     */
    tag?: Tag | keyof HTMLElementTagNameMap;
    /**
     * If true, the button will start as flat on first render.
     * @see [@starting-style](https://developer.mozilla.org/en-US/docs/Web/CSS/@starting-style) for browser support
     */
    start?: boolean;
    /**
     * Text color to use for the button.
     */
    color?: Color | CSSStyleDeclaration['color'];
    /**
     * Shorthand for a flat borderless inset button.
     *
     * @defaults`{ elevation: 0, hover: -1, active: -3, pressed: false, borderless: true }`
     */
    text?: boolean;
    /**
     * If true, button specific styles will be removed (padding, text align & justification).
     * And the button will act as a flex container.
     *
     * @defaults`{ elevation: 0, hover: -1, active: -2, pressed: false, scale: false, borderless: true }`
     */
    container?: boolean;
    /**
     * Input elevation.
     *
     * @default 3 (absolute value)
     */
    elevation?: NeoButtonElevation;
    /**
     * Whether to increase/decrease the elevation when hovered/focused.
     *
     * @default -1 (relative to base elevation)
     */
    hover?: NeoButtonHoverElevation;
    /**
     * Whether to increase/decrease the elevation when active.
     *
     * @default -2 (absolute value)
     */
    active?: NeoButtonActiveElevation;
    /**
     * The blur level to apply to the button when in glass mode.
     *
     * @default elevation, min: 1, max: 5
     * @see glass
     */
    blur?: NeoButtonBlur;
    /**
     * Whether the pressed state should be displayed as recessed or pressed.
     *
     * @default true if `elevation` + `hover` > 0 && `active` < 0
     */
    pressed?: boolean;
    /**
     * Whether to scale the button content on active state.
     *
     * @default true
     */
    scale?: boolean | number;
    /**
     * If true, the button will be displayed with no elevation.
     */
    borderless?: boolean;
    /**
     * If true, the button will be displayed with a glass effect.
     */
    glass?: boolean;
    /**
     * Set the button to be filled with the background color.
     */
    filled?: boolean;
    /**
     * Tints the button with the current color.
     */
    tinted?: boolean;
    /**
     * If true, the button will have a rounded border.
     */
    rounded?: BorderRadiusInput;
    /**
     * If true, the flex direction of the button will be reversed.
     */
    reverse?: boolean;
    /**
     * If true, the button will be surrounded by coalescing waves.
     * The waves will reverse direction on hover or active states.
     */
    coalesce?: boolean;
    /**
     * If true, the button will be surrounded by expanding waves.
     * The waves will reverse direction on hover or active states.
     */
    pulse?: boolean;
    /**
     * Aspect ratio of the button.
     *
     * @see [aspect-ratio](https://developer.mozilla.org/en-US/docs/Web/CSS/aspect-ratio)
     */
    ratio?: CSSStyleDeclaration['aspectRatio'];
    /**
     * Callback function to be called when the toggle state changes.
     * @param checked
     */
    onchecked?: (checked: boolean) => unknown;
    /**
     * Callback function to be called when the button is clicked.
     * @param e
     * @param checked
     */
    onclick?: (e: SvelteEvent<MouseEvent>, checked?: boolean) => unknown;
    /**
     * Callback function to be called when a key is pressed.
     * @param e
     */
    onkeydown?: KeyboardEventHandler<HTMLButtonElement>;
    /**
     * Callback function to be called when a key is released.
     * @param e
     */
    onkeyup?: KeyboardEventHandler<HTMLButtonElement>;
    /**
     * Optional props to pass to the icon image component if the icon is a string.
     */
    imageProps?: Partial<NeoImageProps>;
} & NeoButtonStates & HTMLFlexProps & HTMLActionProps & HTMLRefProps & Partial<Omit<Tag extends 'button' ? HTMLButtonAttributes : Tag extends 'a' ? HTMLAnchorAttributes : HTMLNeoBaseElement<HTMLElementTagNameMap[Tag]>, 'onclick' | 'onkeydown' | 'onkeyup'>>;
export type NeoButtonTemplate = Pick<NeoButtonProps, 'elevation' | 'hover' | 'active' | 'pressed' | 'borderless' | 'glass' | 'tinted' | 'rounded' | 'reverse' | 'coalesce' | 'pulse'>;
export declare const NeoRaisedButton: NeoButtonTemplate;
export declare const NeoFlatButton: NeoButtonTemplate;
export declare const NeoTextButton: NeoButtonTemplate;