/**
 *
 * GalleryItem represents a single slide in the Gallery. Items register themselves with the parent Gallery on
 * mount and the parent assigns them a sequential `index`. The active item is rendered with `data-active`
 * (CSS-driven visibility), absolute-centered inside `GalleryContent`, and supports drag-to-pan, pinch-to-zoom
 * (touch), wheel zoom (Ctrl + wheel), click-to-toggle-zoom, rotation, flip and download.
 *
 * Transforms are applied via CSS custom properties on the root: `--position-x`, `--position-y`, `--scale`,
 * `--rotation`, `--flip-x`, `--flip-y`.
 *
 * [Live Demo](https://www.primevue.dev/gallery/)
 *
 * @module galleryitem
 *
 */
import type { DefineComponent, DesignToken, EmitFn, PassThrough } from '@primevue/core';
import type { ComponentHooks } from '@primevue/core/basecomponent';
import type { PassThroughOptions } from 'primevue/passthrough';
import type { Component, CSSProperties, HTMLAttributes, VNode } from 'vue';

export declare type GalleryItemPassThroughOptionType = GalleryItemPassThroughAttributes | ((options: GalleryItemPassThroughMethodOptions) => GalleryItemPassThroughAttributes | string) | string | null | undefined;

/**
 * Custom passthrough(pt) option method.
 */
export interface GalleryItemPassThroughMethodOptions {
    /**
     * Defines instance.
     */
    instance: any;
    /**
     * Defines valid properties.
     */
    props: GalleryItemProps;
    /**
     * 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 GalleryItemProps.pt}
 */
export interface GalleryItemPassThroughOptions {
    /**
     * Used to pass attributes to the root's DOM element.
     */
    root?: GalleryItemPassThroughOptionType;
    /**
     * Used to manage all lifecycle hooks.
     * @see {@link BaseComponent.ComponentHooks}
     */
    hooks?: ComponentHooks;
}

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

/**
 * Defines valid properties in GalleryItem component.
 */
export interface GalleryItemProps {
    /**
     * Scale factor when the item is at its natural (non-zoomed) state.
     * @defaultValue 1
     */
    normalScale?: number | undefined;
    /**
     * Maximum scale factor reached when the item is zoomed in.
     * @defaultValue 3
     */
    zoomedScale?: number | undefined;
    /**
     * Use to change the HTML tag of root element.
     * @defaultValue DIV
     */
    as?: string | Component | undefined;
    /**
     * When enabled, it changes the default rendered element for the one passed as a child element.
     * @defaultValue false
     */
    asChild?: boolean | 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.
     */
    pt?: PassThrough<GalleryItemPassThroughOptions>;
    /**
     * Used to configure passthrough(pt) options of the component.
     */
    ptOptions?: PassThroughOptions;
    /**
     * When enabled, it removes component related styles in the core.
     * @defaultValue false
     */
    unstyled?: boolean;
}

/**
 * Root element attributes forwarded to the consumer when `asChild` is enabled.
 */
export interface GalleryItemA11yAttrs extends HTMLAttributes {
    /**
     * Function ref that captures the consumer root element so the Gallery can
     * measure and drive the active item.
     */
    ref: (el: Element | null) => void;
    /**
     * PrimeVue component identifier.
     */
    'data-pc-name': 'galleryitem';
    /**
     * PrimeVue section identifier within the component.
     */
    'data-pc-section': 'root';
    /**
     * Index of this item in the registered order.
     */
    'data-index': number;
    /**
     * Present (as `""`) while this item is the active one, otherwise `undefined`.
     */
    'data-active'?: '' | undefined;
    /**
     * Present (as `""`) for a short window while the item is animating a rotation, otherwise `undefined`.
     */
    'data-rotating'?: '' | undefined;
    /**
     * Inline style carrying the transform CSS variables.
     */
    style: CSSProperties;
    /**
     * Click handler that toggles zoom in/out at the clicked point.
     */
    onClick: (event: MouseEvent) => void;
    /**
     * Pointer-down handler initiating drag/pinch tracking.
     */
    onPointerdown: (event: PointerEvent) => void;
    /**
     * Pointer-move handler driving drag and pinch updates.
     */
    onPointermove: (event: PointerEvent) => void;
    /**
     * Pointer-up handler finalising the gesture.
     */
    onPointerup: (event: PointerEvent) => void;
    /**
     * Drag-start handler that prevents the browser's native image drag.
     */
    onDragstart: (event: DragEvent) => void;
}

/**
 * Defines valid slots in GalleryItem component.
 */
export interface GalleryItemSlots {
    /**
     * Custom content template. Receives `index` and `active` (and consumer-targeted props when `asChild` is enabled).
     * @param {Object} scope - default slot's params.
     */
    default(scope: {
        /**
         * Index assigned to this item by the parent Gallery.
         */
        index: number;
        /**
         * Whether this item is the currently active item.
         */
        active: boolean;
        /**
         * Computed class name for the item root (only emitted when `asChild` is enabled).
         */
        class?: string | object | Array<string | object>;
        /**
         * Attributes to spread on the consumer's root element so the parent Gallery
         * can detect the active state, drive transforms, intercept input and capture
         * the root element reference (only emitted when `asChild` is enabled).
         */
        a11yAttrs?: GalleryItemA11yAttrs;
    }): VNode[];
}

/**
 * Defines valid emits in GalleryItem component.
 */
export interface GalleryItemEmitsOptions {}

export declare type GalleryItemEmits = EmitFn<GalleryItemEmitsOptions>;

/**
 * Defines valid public methods exposed by the GalleryItem component instance.
 */
export interface GalleryItemMethods {
    /**
     * Returns the root DOM element captured by the item, or `null` before mount
     * or when rendered with `asChild` and the consumer hasn't attached `a11yAttrs.ref` yet.
     *
     * @memberof GalleryItem
     */
    getEl(): HTMLElement | null;
}

/**
 * **PrimeVue - GalleryItem**
 *
 * _GalleryItem is a helper component for Gallery component._
 *
 * [Live Demo](https://www.primevue.dev/gallery/)
 * --- ---
 * ![PrimeVue](https://primefaces.org/cdn/primevue/images/logo-100.png)
 *
 * @group Component
 *
 */
declare const GalleryItem: DefineComponent<GalleryItemProps, GalleryItemSlots, GalleryItemEmits, GalleryItemMethods>;

declare module 'vue' {
    export interface GlobalComponents {
        GalleryItem: DefineComponent<GalleryItemProps, GalleryItemSlots, GalleryItemEmits, GalleryItemMethods>;
    }
}

export default GalleryItem;