import { PropertyValueMap } from "lit";
import { FRoot } from "../../mixins/components/f-root/f-root";
import { Ref } from "lit/directives/ref.js";
import { FDiv } from "../f-div/f-div";
import { FText } from "../f-text/f-text";
export type FFileUploadState = "primary" | "default" | "success" | "warning" | "danger";
export type FFileUploadValueType = File | File[];
export type FFileUploadFileType = string | "all";
export type FFileUploadSizeProp = `${number} B` | `${number} KB` | `${number} MB` | `${number} GB` | `${number} TB`;
export declare class FFileUpload extends FRoot {
    /**
     * css loaded from scss file
     */
    static styles: import("lit").CSSResult[];
    /**
     * @attribute f-file-upload has 2 type of modes: single and multiple. When type is single, a user can select only one file and the filename appears inline to the file uploader.  When type is multiple, a user can select multiple files and each filename stacks under the file uploader.
     */
    type?: "single" | "multiple";
    /**
     * @attribute Defines the return value of f-file-uploader. When type is single, return value is single file object instance. When type is multiple, return value is an array of file object instances.
     */
    value?: FFileUploadValueType;
    /**
     * @attribute Defines the placeholder text for f-file-upload. Note: Placeholder is replaced by file name when type is single.
     */
    placeholder?: string;
    /**
     * @attribute Users can limit the file types by setting the file-type property to a string containing the allowed file type(s). To specify more than one type, separate the values with a comma. Acceptable file formats are displayed in brackets under description.
     */
    fileType?: FFileUploadFileType;
    /**
     * @attribute f-file-upload can have 2 sizes. Note: Font styles are same in both sizes. Only paddings and gaps are different
     */
    size?: "medium" | "small";
    /**
     * @attribute States are used to communicate purpose and connotations. For example, a red color connotes danger, whereas a green color connotes success and so on.
     */
    state?: FFileUploadState;
    /**
     * @attribute This shows the maximum file size allowed per file
     */
    maxSize?: FFileUploadSizeProp;
    /**
     * @attribute Sets the file-upload to disabled state.
     */
    disabled?: boolean;
    /**
     * @attribute Sets the file-upload to loading state
     */
    loading?: boolean;
    fileUploadSection: HTMLElement;
    fileUploadHeader: FDiv;
    fileUploadError: FDiv;
    labelSlot: HTMLElement;
    descriptionSlot: HTMLElement;
    helpSlot: HTMLElement;
    textOverflow: FText;
    /**
     * @attribute assigned elements inside slot label
     */
    _labelNodes: NodeListOf<HTMLElement>;
    /**
     * @attribute assigned elements inside slot description
     */
    _descriptionNodes: NodeListOf<HTMLElement>;
    /**
     * @attribute assigned elements inside slot help
     */
    _helpNodes: NodeListOf<HTMLElement>;
    bytes: number;
    sizeLimitFlag: boolean;
    acceptedFilesFlag: boolean;
    selectedFiles?: File[];
    fileInputRef: Ref<HTMLInputElement>;
    /**
     * has label slot
     */
    get hasLabel(): boolean;
    /**
     * has description slot
     */
    get hasDescription(): boolean;
    /**
     * has help slot
     */
    get hasHelperText(): boolean;
    /**
     * error if file format is incorrect
     */
    get fileFormatError(): string;
    /**
     * error if file size is more than given size
     */
    get fileSizeError(): string;
    /**
     * value for event dispatch
     */
    get dispatchValue(): File | File[] | undefined;
    /**
     * on click open file selector window on OS
     */
    handleClick(): void;
    /**
     * @param e DragEvent
     * drag and drop file(s) and event emission
     */
    dropFile(e: DragEvent): void;
    /**
     * select file(s) from browse options
     * @param e InputEvent
     */
    selectFile(e: InputEvent): void;
    /**
     * dispatch input event
     * @param e Event
     */
    dispatchOnInput(e: Event): void;
    /**
     * on click remove the selected single file
     * @param e MouseEvent
     */
    handleRemoveFile(e: MouseEvent): void;
    /**
     * removes the clicked respective file from selection array
     * @param e MouseEvent
     * @param file contains clicked file
     */
    handleRemoveRespectiveFile(e: MouseEvent, file: File): void;
    /**
     * check if ellipsis happens on text and insert tooltip
     */
    checkOverflowing(): void;
    /**
     * in multiple file selection hovering on the particular file name may open the tooltip -if ellipsis is present
     * @param e MouseEvent
     */
    handleMouseEnter(e: MouseEvent): void;
    /**
     *
     * @param str single character
     * @returns boolea value if character present is alphabet or not
     */
    isLetter(str: string): boolean;
    /**
     *
     * @param str string
     * @param index index to splice from
     * @returns returns an array [number, characters]
     */
    split(str: string, index: number): string[];
    /**
     * update file array locally
     */
    updateSelectedValues(): void;
    /**
     * display messages according to conditions
     */
    helpSectionMessages(): void;
    /**
     * conditional help section display for false spacing issue
     */
    helpSectionDisplay(): void;
    /**
     * conditional header section display for false spacing issue
     */
    headerSectionDisplay(): void;
    render(): import("lit-html").TemplateResult<1>;
    protected updated(changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void;
}
/**
 * Required for typescript
 */
declare global {
    interface HTMLElementTagNameMap {
        "f-file-upload": FFileUpload;
    }
}