uploadProgressCallback Property


The callback function that fires periodically as the file is uploaded to the Document Service.

Object.defineProperty(LoadFromLocalParams.prototype, 'uploadProgressCallback', 
   get: function(), 
   set: function(value) 
uploadProgressCallback: ; 

Property Value

Default value is null. If a valid function is provided, this callback fires periodically as the file is uploaded to the Document Service.

export class ViewerLoadFromLocalExample { 
    private _viewer: lt.LEADVIEW.Viewer = null; 
    private _file: File = null; 
    public constructor() { 
            lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null); 
    public run = (divID: string, buttonID: string): void => { 
        const lv = new lt.LEADVIEW.Viewer(); 
        // Builds a new instance of LEADVIEW. 
        // For the full list of options that can be passed to the run method, 
        // refer to the settings JSON files that are included in the LEADVIEW demo application. 
        // Settings files can also be generated from the LEADVIEW application itself. 
        lv.run(null, { 
            'rootDivId': divID, 
            'showMainMenu': false, 
            'serviceHost': 'http://localhost:40000', // or wherever your host is 
            'servicePath': '', // the path to the root of the service, which is nothing for this example 
            'serviceApiPath': 'api', // Routing occurs at "/api", unless you change the routing in the DocumentsService 
        this._viewer = lv; 
        document.getElementById(buttonID).onchange = this.onFileChange; 
    private onFileChange = (event: any) => { 
        this._file = (event.target.files.length === 0) ? null : event.target.files[0]; 
    private loadFromLocal = () => { 
        const loadOptions:lt.LEADVIEW.ILoadFromLocalParams = { 
            file: this._file, 
            annFile: null, 
            loadFailCallback: this.errorHandler, 
            uploadFailCallback: this.errorHandler, 
            loadOptions: null, 
            loadingDialogCallback: null, 
            loadAlwaysCallback: null, 
            loadSuccessCallback: (document: lt.Document.LEADDocument) => { 
            uploadProgressCallback: null, 
            uploadSuccessCallback: null 
    private errorHandler = (serviceError: lt.Document.ServiceError) => { 
        alert(`There was an error loading in the document. ${serviceError.message}`); 
<!doctype html> 
<html lang="en"> 
<title>LV Examples | LoadFromLocal</title> 
    <script src="https://code.jquery.com/jquery-2.2.4.min.js" 
        integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script> 
    <script src="../LT/Leadtools.js"></script> 
    <script src="../LT/Leadtools.Controls.js"></script> 
    <script src="../LT/Leadtools.Annotations.Engine.js"></script> 
    <script src="../LT/Leadtools.Annotations.Designers.js"></script> 
    <script src="../LT/Leadtools.Annotations.Rendering.Javascript.js"></script> 
    <script src="../LT/Leadtools.Annotations.Automation.js"></script> 
    <script src="../LT/Leadtools.ImageProcessing.Main.js"></script> 
    <script src="../LT/Leadtools.ImageProcessing.Color.js"></script> 
    <script src="../LT/Leadtools.ImageProcessing.Core.js"></script> 
    <script src="../LT/Leadtools.ImageProcessing.Effects.js"></script> 
    <script src="../LT/Leadtools.Document.js"></script> 
    <script src="../LT/Leadtools.Document.Viewer.js"></script> 
    <script src="../LT/Leadtools.LEADVIEW.js" defer></script> 
    <link href="../css/Leadtools.LEADVIEW.css" type="text/css" rel="stylesheet"> 
    <!-- All typescript files compiled from /src/ will be bundled and dropped into the root folder `bundle.js`--> 
    <script src="../bundle.js" type="text/javascript"></script> 
        Set Current Document 
        <input type="file" id="setCurrentDocument"> 
    <div id="runDemo" style="width: 100%; height: 97vh;"></div> 
    window.onload = () => { 
        const example = new window.examples.ViewerLoadFromLocalExample(); 
        example.run('runDemo', 'setCurrentDocument'); 

Target Platforms

Help Version 23.0.2024.2.29
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© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.LEADVIEW Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.