import { Core } from '@pdftron/webviewer';
import { FuturableOrLazy } from './futurable';
import { MemoizedPromise } from './memoizedPromise';
export interface FileDetails {
    /**
     * The name of the file.
     */
    name: string;
    /**
     * Optional ID for file. If falsy, will generate a unique ID.
     */
    id?: string;
    /**
     * The original name of the file.
     * @default name
     */
    originalName?: string;
    /**
     * File extension. For example, `'pdf'`. If not provided, will be parsed from
     * `name`.
     */
    extension?: string;
    /**
     * File object, or function to get it. One of `fileObj` or `documentObj` must
     * be given.
     */
    fileObj?: MemoizedPromise<Blob> | FuturableOrLazy<Blob>;
    /**
     * Document object, or function to get it. One of `fileObj` or `documentObj`
     * must be given.
     */
    documentObj?: MemoizedPromise<Core.Document | undefined> | FuturableOrLazy<Core.Document | undefined>;
    /**
     * Thumbnail data URL string, or function to get it.
     */
    thumbnail?: MemoizedPromise<string> | FuturableOrLazy<string>;
    /**
     * Set the WebViewer license key for only this file. If you wish to set for
     * all files, use the static `File.setGlobalLicense` method. This local
     * license will take priority over the global license.
     */
    license?: string;
    /**
     * A reference to the document that was used to create this File class. Used
     * as an optimization where applicable. If passed, `pageNumber` must also be
     * passed.
     */
    fullDocumentObj?: Core.Document;
    /**
     * Used in conjunction with `fullDocumentObj`. Represents the page number of
     * `fullDocumentObj` that this file belongs too.
     */
    pageNumber?: number;
}
export interface FileLike {
    id: string;
    name: string;
    originalName: string;
    extension: string;
    thumbnail: MemoizedPromise<string>;
    fileObj: MemoizedPromise<Blob>;
    documentObj: MemoizedPromise<Core.Document | undefined>;
    subscribe: (...args: any) => () => void;
    fullDocumentObj?: Core.Document;
    pageNumber?: number;
}
export declare type FileEventType = 
/** Triggered when the documentObj is updated. */
'onrotate'
/** Triggered when the documentObj is updated. */
 | 'ondocumentobjchange'
/** Triggered when the fileObj is updated. */
 | 'onfileobjchange'
/** Triggered when the thumbnail is updated. */
 | 'onthumbnailchange'
/** Triggered when the name is updated. */
 | 'onnamechange'
/** Triggered when the thumbnail is frozen. */
 | 'onfreezethumbnail'
/** Triggered when the thumbnail is unfrozen. */
 | 'onunfreezethumbnail'
/** Change is always fired after every other event, unless stopPropagation was called. */
 | 'onchange';
export declare type FileEventListener = () => void;
export declare type FileEventListenersObj = Partial<{
    [type in FileEventType]: FileEventListener[];
}>;
/** A representation of the data within a file. */
export declare class File implements FileLike {
    private _id;
    private _name;
    private _originalName;
    private _extension;
    private _fileObj;
    private _documentObj;
    private _thumbnail;
    private _freezeThumbnail;
    private _subscribers;
    private _license?;
    private _fullDocumentObj?;
    private _pageNumber?;
    /**
     * Initialize the `File`.
     * @param fileDetails The file details object or file-like class to initialize
     * this `File` with.
     */
    constructor(fileDetails: FileDetails);
    /**
     * Set the license key in order to use full WebViewer features. This only
     * needs to be done once, and will be used globally by all files.
     * @param license The license key for WebViewer.
     */
    static setGlobalLicense(license: string): void;
    /** A unique ID generated for the file. */
    get id(): string;
    /** The original name of the file. */
    get originalName(): string;
    /** The extension of the file (for example `'pdf'`). */
    get extension(): string;
    /** A memoized promise for the thumbnail. */
    get thumbnail(): MemoizedPromise<string>;
    /** A memoized promise for the fileObj. */
    get fileObj(): MemoizedPromise<Blob>;
    /** A memoized promise for the documentObj. */
    get documentObj(): MemoizedPromise<Core.Document | undefined>;
    /** Gets the full document object if provided during initialization. */
    get fullDocumentObj(): Core.Document | undefined;
    /** Gets the page index if provided during initialization. */
    get pageNumber(): number | undefined;
    /** The name of the file. */
    get name(): string;
    set name(name: string);
    /** Freeze to prevent thumbnail from changing. */
    get freezeThumbnail(): boolean;
    set freezeThumbnail(freezeThumbnail: boolean);
    /**
     * Set the thumbnail or give a futurable or getter.
     * @param thumbnail The thumbnail, promise, or getter for the thumbnail.
     */
    setThumbnail(thumbnail?: FuturableOrLazy<string>): void;
    /**
     * Set the fileObj or give a futurable or getter.
     * @param fileObj The fileObj, promise, or getter for the fileObj.
     */
    setFileObj(fileObj?: FuturableOrLazy<Blob>): void;
    /**
     * Set the documentObj or give a futurable or getter.
     * @param documentObj The documentObj, promise, or getter for the documentObj.
     */
    setDocumentObj(documentObj?: FuturableOrLazy<Core.Document | undefined>): void;
    /**
     * Use this file to make updates to `documentObj` that you want reflected in
     * `fileObj` and `thumbnail`. Since mutations directly to `documentObj` will
     * not be detected, using this function tells `File` to trigger an update.
     */
    updateDocumentObj(updater: (documentObj: Core.Document | undefined) => Promise<void>): Promise<void>;
    /**
     * Rotate 90 degrees clockwise unless `counterclockwise` is true.
     * @param counterclockwise Rotate 90 degrees counterclockwise.
     */
    rotate(counterclockwise?: boolean): Promise<void>;
    /**
     * Creates a clone of the file with a new `documentObj`. This is the
     * recommended way of duplicating files, as it will prevent them both
     * referencing the same documentObj.
     * @param overrides Override any of the `FileDetails` that initialize `File`.
     * Note that `fileObj` will be overridden by the `documentObj` in overrides,
     * or cloned from this file.
     */
    clone(overrides?: Partial<FileDetails>): File;
    /**
     * Appends an subscriber for events whose type attribute value is type.
     * The callback argument sets the callback that will be invoked when the event
     * is dispatched.
     * @param type The event type that will invoke the listener.
     * @param subscriber The listener function that will be invoked.
     */
    subscribe(type: FileEventType, subscriber: FileEventListener): () => FileEventListener[] | undefined;
    /**
     * Dispatch an event for this file. Once all subscribers have been called for
     * the dispatched type, it will complete by calling all onchange subscribers.
     * @param type The file event type to dispatch.
     */
    dispatchEvent(type: FileEventType): void;
    /**
     * Removes the event listener in target's event listener list with the same
     * type and callback.
     * @param type The event type that the listener is registered for.
     * @param subscriber The listener to remove.
     */
    private _unsubscribe;
    /** Generate a thumbnail from document object. */
    private _generateThumbnail;
    /** Generate a file object from document object. */
    private _generateFileObj;
    /** Generate a document object from file object and extension. */
    private _generateDocumentObj;
}