import { LitElement } from 'lit';
export type ImageUploadFile = {
    uid?: string | number;
    name: string;
    url?: string;
    size?: number;
    status?: 'ready' | 'uploading' | 'success' | 'fail';
    progress?: number;
    file?: File;
};
export declare class QxsImageUpload extends LitElement {
    private static _scrollLockCount;
    private static _previousHtmlOverflow;
    private static _previousBodyOverflow;
    static styles: import("lit").CSSResult;
    action: string;
    headers?: Record<string, string>;
    data?: Record<string, string | Blob>;
    name: string;
    size: number;
    width: number;
    height: number;
    accept: string;
    placeholder: string;
    notip: boolean;
    tipText: string;
    disabled: boolean;
    limit: number;
    fileList: ImageUploadFile[];
    private _internalFiles;
    private _viewerVisible;
    private _viewerIndex;
    private _message;
    private _messageType;
    private _input?;
    private _hasScrollLock;
    private _pendingRequests;
    connectedCallback(): void;
    disconnectedCallback(): void;
    updated(changed: Map<string, unknown>): void;
    private get _exts();
    private get _tipMessage();
    private _syncFileList;
    private _setMessage;
    private _clearMessage;
    private _revokeFileUrl;
    private _emitFileListChange;
    private _emitSuccess;
    private _getFileKey;
    private _updateFileByKey;
    private _emitRemove;
    private _validateFile;
    private _handleSelectedFiles;
    private _handleInputChange;
    private _uploadFile;
    private _handlePreview;
    private _closeViewer;
    private _prevImage;
    private _nextImage;
    private _handleRemove;
    private _syncScrollLock;
    render(): import("lit").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'qxs-image-upload': QxsImageUpload;
    }
}