export interface ImageGalleryItem {
    id: string;
    url: string;
    name?: string;
}
/**
 * What the preview dialog shows; `ImageGalleryItem` and `AiAttachmentImage` both fit.
 * `width` and `height`, when known, shape the placeholder drawn while the picture loads.
 * Internal: TxAttachmentTray opens the same dialog, but neither index exports this.
 */
export interface ImageGalleryViewerItem extends ImageGalleryItem {
    width?: number;
    height?: number;
}
export interface ImageGalleryProps {
    items: ImageGalleryItem[];
    startIndex?: number;
    /** Accessible label for the previous-image button. @default 'Previous image' */
    previousLabel?: string;
    /** Accessible label for the next-image button. @default 'Next image' */
    nextLabel?: string;
    /** Visible text of the previous-image button. @default 'Prev' */
    previousText?: string;
    /** Visible text of the next-image button. @default 'Next' */
    nextText?: string;
    /** Fallback modal title when the current item has no `name`. @default 'Preview' */
    previewTitle?: string;
    /** Accessible label for the preview's close button. @default 'Close' */
    closeLabel?: string;
    /** Builds an item's display name when `item.name` is absent. @default (i) => `Image ${i + 1}` */
    itemLabelFormatter?: (index: number) => string;
    /** Builds a thumbnail's aria-label from an item's display name. @default (label) => `Open ${label} preview` */
    openLabelFormatter?: (label: string) => string;
}
export interface ImageGalleryEmits {
    (e: 'open', payload: {
        index: number;
        item: ImageGalleryItem;
    }): void;
    (e: 'close'): void;
}