import { EventEmitter, ComponentInterface } from '../../stencil-public-runtime';
export type BcmUploadStatus = 'uploading' | 'uploaded' | 'error';
export interface BcmUploadItem {
    id: string;
    file: File;
    status: BcmUploadStatus;
    progress?: number;
}
export interface BcmUploadErrorMessages {
    /**
     * Error message shown when a file exceeds the maxSize limit.
     */
    maxSize?: string;
    /**
     * Error message shown when file type is not allowed by `accept`.
     */
    type?: string;
    /**
     * Error message shown when `maxFileCount` is exceeded.
     */
    maxFileCount?: string;
    /**
     * Error message used for `required` validation when no file is selected.
     */
    required?: string;
}
export declare class BcmFileUpload implements ComponentInterface {
    host: HTMLElement;
    internals: ElementInternals;
    private fileInput?;
    private uploadTimer?;
    private uploadZoneRef?;
    name: string;
    label: string;
    caption?: string;
    multiple: boolean;
    accept: string;
    maxSize: number;
    required: boolean;
    disabled: boolean;
    size: 'medium' | 'small';
    /**
     * Reserved for future backend upload integration.
     * Currently does not affect component behavior.
     */
    uploadUrl?: string;
    /**
     * Maximum number of files allowed in total.
     * Only applied when `multiple` is true.
     */
    maxFileCount?: number;
    /**
     * Allows consumers to override default error messages.
     */
    customErrorMessages?: BcmUploadErrorMessages;
    private files;
    private dragActive;
    private maxSizeError;
    private typeError;
    private maxFileCountError;
    bcmFileChange: EventEmitter<File[]>;
    bcmFileRemoved: EventEmitter<BcmUploadItem>;
    bcmUploadCanceled: EventEmitter<BcmUploadItem>;
    bcmFocus: EventEmitter<FocusEvent>;
    bcmBlur: EventEmitter<FocusEvent>;
    private internalMaxSizeInBytes;
    componentWillLoad(): void;
    disconnectedCallback(): void;
    handleMaxSizeChange(): void;
    /**
     * Normalize and check a file against the `accept` attribute.
     */
    private isFileAccepted;
    /**
     * Update form value and validity state for form-associated behavior.
     */
    private updateFormValueAndValidity;
    private emitChange;
    /**
     * Simulate upload progress. Replace with real upload logic if needed.
     */
    private startFakeUpload;
    /**
     * Add files from input or drop.
     */
    private addFiles;
    private removeFile;
    private cancelUpload;
    private onFileInputChange;
    private downloadFile;
    private handleDrop;
    private handleDragOver;
    private handleDragLeave;
    private openFileDialog;
    formResetCallback(): void;
    /**
     * When the browser or user calls element.focus(),
     * move focus to the upload zone.
     */
    focus(options?: FocusOptions): void;
    private handleFocus;
    private handleBlur;
    private renderErrors;
    private renderUploadZone;
    private renderFileRow;
    render(): any;
}