import type { UmbUploadableItem } from '../../types.js';
import { UmbDropzoneManager } from '../../dropzone-manager.class.js';
import { nothing } from '../../../../../external/lit/index.js';
import { UmbLitElement } from '../../../../core/lit-element/index.js';
import type { UUIFileDropzoneElement, UUIFileDropzoneEvent } from '../../../../../external/uui/index.js';
declare const UmbInputDropzoneElement_base: import("../../../../../libs/extension-api/index.js").HTMLElementConstructor<import("../../../../core/validation/index.js").UmbFormControlMixinElement<UmbUploadableItem[] | undefined>> & typeof UmbLitElement;
/**
 * A dropzone for uploading files and folders.
 * The files will be uploaded to the server as temporary files and can be used in the backoffice.
 * @element umb-input-dropzone
 * @fires ProgressEvent When the progress of the upload changes.
 * @fires UmbDropzoneChangeEvent When the upload is complete.
 * @fires UmbDropzoneSubmittedEvent When the upload is submitted.
 * @slot - The default slot.
 * @slot text - A text shown above the dropzone graphic.
 */
export declare class UmbInputDropzoneElement extends UmbInputDropzoneElement_base {
    #private;
    /**
     * Prohibits dropping files onto the dropzone. Unlike `disabled`, the drop hint is still shown while
     * dragging (rendered in a danger colour), but any dropped files are rejected.
     */
    noAccess: boolean;
    /**
     * Comma-separated list of accepted mime types or file extensions.
     */
    accept?: string;
    /**
     * Disable folder uploads.
     */
    disableFolderUpload: boolean;
    /**
     * Disables the dropzone.
     * @description The dropzone will not accept any uploads.
     */
    disabled: boolean;
    /**
     * Determines if the dropzone should accept multiple files.
     */
    multiple: boolean;
    /**
     * Style the dropzone with a border.
     * @description This is useful if you want to display the dropzone directly rather than as a part of a separate component.
     */
    standalone: boolean;
    /**
     * The label for the dropzone.
     */
    label: string;
    protected _dropzone?: UUIFileDropzoneElement;
    protected _progressItems: Array<UmbUploadableItem>;
    protected _manager: UmbDropzoneManager;
    constructor();
    protected _observeProgress(): void;
    protected _observeProgressItems(): void;
    disconnectedCallback(): void;
    /**
     * Opens the file browse dialog.
     */
    browse(): void;
    render(): import("lit-html").TemplateResult<1>;
    protected renderUploader(): typeof nothing | import("lit-html").TemplateResult<1>;
    protected renderPlaceholder(item: UmbUploadableItem): import("lit-html").TemplateResult<1>;
    /**
     * Handles the upload of files and folders dropped onto the dropzone.
     * Previously this could be overwritten by the consumer of the component, but now it is recommended to overwrite `_handleUpload` instead.
     * By default, it uses the dropzone manager to create temporary files for the dropped items.
     * @deprecated Overwrite `_handleUpload` instead. This method will be removed in v.21.
     * @param {UUIFileDropzoneEvent} e - The event from the file dropzone.
     */
    protected onUpload(e: UUIFileDropzoneEvent): Promise<void>;
    /**
     * Handles the upload of files and folders dropped onto the dropzone.
     * Override this method to customize the upload behavior.
     * By default, it uses the dropzone manager to create temporary files for the dropped items.
     * @param {UUIFileDropzoneEvent} e - The event from the file dropzone.
     * @returns {Promise<Array<UmbUploadableItem>>} - A promise that resolves to an array of uploadable items.
     */
    protected _handleUpload(e: UUIFileDropzoneEvent): Promise<Array<UmbUploadableItem>>;
    static readonly styles: import("lit").CSSResult[];
}
declare global {
    interface HTMLElementTagNameMap {
        'umb-input-dropzone': UmbInputDropzoneElement;
    }
}
export {};