/**
 *
 * ScrollArea is a cross browser, lightweight and themable alternative to native browser scrollbar with customizable variants and edge masking.
 *
 * [Live Demo](https://www.primevue.dev/scrollarea/)
 *
 * @module scrollarea
 *
 */
import type { DefineComponent, DesignToken, EmitFn, PassThrough } from '@primevue/core';
import type { ComponentHooks } from '@primevue/core/basecomponent';
import type { PassThroughOptions } from 'primevue/passthrough';
import { Component, VNode } from 'vue';

/**
 * Custom passthrough(pt) option value type used across ScrollArea passthrough slots.
 */
export declare type ScrollAreaPassThroughOptionType = ScrollAreaPassThroughAttributes | ((options: ScrollAreaPassThroughMethodOptions) => ScrollAreaPassThroughAttributes | string) | string | null | undefined;

/**
 * Visibility behaviour of the scrollbars.
 */
export type ScrollAreaVariant = 'auto' | 'hover' | 'scroll' | 'always' | 'hidden';

/**
 * Custom passthrough(pt) option method.
 */
export interface ScrollAreaPassThroughMethodOptions {
    /**
     * Defines instance.
     */
    instance: any;
    /**
     * Defines valid properties.
     */
    props: ScrollAreaProps;
    /**
     * Defines current inline state.
     */
    state: ScrollAreaState;
    /**
     * Defines valid attributes.
     */
    attrs: any;
    /**
     * Defines parent options.
     */
    parent: any;
    /**
     * Defines passthrough(pt) options in global config.
     */
    global: object | undefined;
}

/**
 * Custom passthrough(pt) options.
 * @see {@link ScrollAreaProps.pt}
 */
export interface ScrollAreaPassThroughOptions {
    /**
     * Used to pass attributes to the root's DOM element.
     */
    root?: ScrollAreaPassThroughOptionType;
    /**
     * Used to manage all lifecycle hooks.
     * @see {@link BaseComponent.ComponentHooks}
     */
    hooks?: ComponentHooks;
}

/**
 * Custom passthrough attributes for each DOM elements.
 */
export interface ScrollAreaPassThroughAttributes {
    [key: string]: any;
}

/**
 * Defines current inline state in ScrollArea component.
 */
export interface ScrollAreaState {
    /**
     * Captured reference to the viewport element registered by `ScrollAreaViewport`.
     */
    viewportEl: Element | null;
    /**
     * Captured reference to the vertical scrollbar element registered by `ScrollAreaScrollbar`.
     */
    scrollbarYEl: Element | null;
    /**
     * Captured reference to the horizontal scrollbar element registered by `ScrollAreaScrollbar`.
     */
    scrollbarXEl: Element | null;
    /**
     * Whether the pointer is hovering over the root.
     */
    hovering: boolean;
    /**
     * Whether the viewport is currently scrolling horizontally.
     */
    scrollingX: boolean;
    /**
     * Whether the viewport is currently scrolling vertically.
     */
    scrollingY: boolean;
    /**
     * Aggregated scroll metadata (overflow flags, edge flags, corner dimensions).
     */
    scrollMeta: {
        /**
         * Whether the horizontal axis has no overflow.
         */
        hiddenX: boolean;
        /**
         * Whether the vertical axis has no overflow.
         */
        hiddenY: boolean;
        /**
         * Width of the corner gap in pixels.
         */
        cornerWidth: number;
        /**
         * Height of the corner gap in pixels.
         */
        cornerHeight: number;
        /**
         * Whether content is scrolled away from the inline-start edge.
         */
        xBefore: boolean;
        /**
         * Whether content extends past the inline-end edge.
         */
        xAfter: boolean;
        /**
         * Whether content is scrolled away from the top edge.
         */
        yBefore: boolean;
        /**
         * Whether content extends past the bottom edge.
         */
        yAfter: boolean;
    };
}

/**
 * Defines valid properties in ScrollArea component.
 */
export interface ScrollAreaProps {
    /**
     * Visibility behaviour of the scrollbars.
     * @defaultValue 'auto'
     */
    variant?: ScrollAreaVariant | undefined;
    /**
     * When enabled, applies a fade mask to the scrollable content edges.
     * @defaultValue false
     */
    mask?: boolean | undefined;
    /**
     * The element or component used to render the root.
     * @defaultValue 'DIV'
     */
    as?: string | Component | undefined;
    /**
     * When enabled, root element renders without its own DOM; consumer renders via slot using `a11yAttrs`.
     * @defaultValue false
     */
    asChild?: boolean | undefined;
    /**
     * Tab index applied to the viewport when content overflows. The viewport is omitted from the tab order when content fits.
     * @defaultValue 0
     */
    tabIndex?: number | undefined;
    /**
     * It generates scoped CSS variables using design tokens for the component.
     */
    dt?: DesignToken<any>;
    /**
     * Used to pass attributes to DOM elements inside the component.
     * @type {ScrollAreaPassThroughOptions}
     */
    pt?: PassThrough<ScrollAreaPassThroughOptions>;
    /**
     * Used to configure passthrough(pt) options of the component.
     * @type {PassThroughOptions}
     */
    ptOptions?: PassThroughOptions;
    /**
     * When enabled, it removes component related styles in the core.
     * @defaultValue false
     */
    unstyled?: boolean;
}

/**
 * Defines valid slots in ScrollArea component.
 */
export interface ScrollAreaSlots {
    /**
     * Custom content slot.
     * @param {Object} scope - default slot props.
     */
    default: (scope: {
        /**
         * Accessibility attributes that should be spread onto the consumer-rendered root when `asChild` is enabled.
         */
        a11yAttrs: Record<string, unknown>;
        /**
         * Root element class produced by the component's `cx('root')` helper.
         */
        class: any;
    }) => VNode[];
}

/**
 * Defines valid emits in ScrollArea component.
 */
export interface ScrollAreaEmitsOptions {}

/**
 * Defines the emit function type for ScrollArea.
 */
export declare type ScrollAreaEmits = EmitFn<ScrollAreaEmitsOptions>;

/**
 * **PrimeVue - ScrollArea**
 *
 * _Compound scroll area root that orchestrates Viewport, Content, Scrollbar, Thumb and Corner subcomponents._
 *
 * [Live Demo](https://www.primevue.dev/scrollarea/)
 *
 * @group Component
 */
declare const ScrollArea: DefineComponent<ScrollAreaProps, ScrollAreaSlots, ScrollAreaEmits>;

declare module 'vue' {
    export interface GlobalComponents {
        ScrollArea: DefineComponent<ScrollAreaProps, ScrollAreaSlots, ScrollAreaEmits>;
    }
}

export default ScrollArea;