import { BaseValidatedClass } from './BaseValidatedClass';
interface ExternalImageLibraryMap {
    openImageLibrary(_currentImageUrl: string, _onImageSelectCallback: ExternalGalleryImageSelectCallback, _onCancelCallback: ExternalGalleryImageCancelCallback): void;
}
export interface ExternalGalleryImage {
    originalName: string;
    width: number;
    height: number;
    sizeBytes: number;
    url: string;
    altText: string;
    labels?: Record<string, string>;
}
export type ExternalGalleryImageSelectCallback = (imageUrl: ExternalGalleryImage) => void;
export type ExternalGalleryImageCancelCallback = () => void;
export declare class ExternalImageLibrary extends BaseValidatedClass implements ExternalImageLibraryMap {
    /** List of methods that must be implemented by subclasses */
    private static readonly REQUIRED_METHODS;
    constructor();
    openImageLibrary(_currentImageUrl: string, _onImageSelectCallback: ExternalGalleryImageSelectCallback, _onCancelCallback: ExternalGalleryImageCancelCallback): void;
}
export {};