Go to:

Demo of core features in jQuery PDFViewer widget | Kendo UI for jQuery (telerik.com). Note that pdf has 3 pages.

In the pdf viewer component demo select the printer icon and a print preview window opens. When the print preview window opens, note that the window indicates that there are 5 pages to print in the print preview. One page is added before the pdf pages and one after. This happens regardless of the printer selected.

Expected behavior: only 3 pages of the pdf should show in the print preview window.

Currently, when the PDFViewer is used with the latest pdf.js version 4.0.379 an error is thrown in the browser console. (Uncaught (in promise) Error: No "textContentSource" parameter specified.)

You can test the behavior in the Dojo linked here - https://dojo.telerik.com/@NeliKondova/eBUYEDAb. Run the example and wait for the pdf file to be loaded, then check the browser console. 

The latest Kendo version is compatible with pdf.js version 3.11.174. However, I would like the Kendo UI for jQuery to be compatible with pdf.js 4.x to avoid such misbehaviors. 

### Bug report

The PDFViewer requires the "unsafe-inline" keyword in the "style-src" directive.

### Reproduction of the problem

1. Enable CSP and set the "style-src" directive to "self":

<meta http-equiv="Content-Security-Policy" content="style-src 'self' https://kendo.cdn.telerik.com;"/>

2. Create a PDFViewer:

<div id="pdfviewer"></div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.4.120/pdf.min.js"></script>
<script>
    window.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.4.120/pdf.worker.min.js';
</script>
<script>
    $("#pdfviewer").kendoPDFViewer({
        pdfjsProcessing: {
            file: ""
        }
    });
</script>

A Dojo sample for reproduction: https://dojo.telerik.com/ugAyagIJ

### Current behavior

When the PDFViewer is initialized, the following Content Security Policy error is thrown:

Refused to apply inline style because it violates the following Content Security Policy directive: "style-src 'self' https://kendo.cdn.telerik.com".

### Expected/desired behavior

The the 'unsafe-inline' keyword must not be required in the "style-src" directive when using the PDFViewer widget.

### Workaround:

Add the following script before the PDFViewer initialization:

<script>
    var styles = {
        scroller: "k-canvas k-pdf-viewer-canvas k-pos-relative k-overflow-auto"
    };
    kendo.ui.PDFViewer.fn._renderPageContainer = function () {
        var that = this;

        if (!that.pageContainer) {
            that.pageContainerWrapper = $("<div />");
            that.pageContainerWrapper.addClass(styles.scroller);

            that.pageContainer = $(`<div class="k-pdf-viewer-pages" />`);
            that.pageContainer.css('--scale-factor', that.zoomScale);
            that.pageContainer.attr("tabindex", 0);

            that.pageContainerWrapper.append(that.pageContainer);
            that.wrapper.append(that.pageContainerWrapper);
        }
    };
</script> 

### Environment

* **Kendo UI version: 2024.2.514
* **jQuery version: 3.7.0
* **Browser: [all]

Additional blank page is added in Chrome when printing a file with specific size.

A reproduction file for the problem can be found in Ticket ID: 1521806.

Bug report

Opening a valid PDF file after trying to open a corrupted PDF file in the PDF Viewer throws a JavaScript error. As a result opening a valid PDF file is not possible.

Uncaught TypeError: Cannot read properties of null (reading 'sendWithStream')
    at PDFPageProxy.streamTextContent (api.js:1114)
    at PDFPageProxy.getTextContent (api.js:1132)
    at init._renderTextLayer (kendo.all.js:170740)
    at init.render (kendo.all.js:170727)
    at kendo.all.js:171384
    at Array.forEach (<anonymous>)
    at r.exec (kendo.all.js:171381)
    at init.execute (kendo.all.js:171959)
    at init.zoom (kendo.all.js:171949)
    at init.fromFile (kendo.all.js:172026)

Reproduction of the problem

1. Navigate to the PDFViewer Demo
2. Open a corrupted PDF file, for example CorruptedPdfFile.pdf
3. Try to open a valid, working PDF file

Screencast

Current behavior

A valid PDF file cannot be opened after a corrupted file was loaded

Expected/desired behavior

It should be possible that a valid PDF file can be opened after a corrupted file has failed to be opened.

Environment

• Kendo UI version: 2021.3.914
• Browser: [all]

Hello!

In your dojo examples of your pdfViewer control you are loading pdf.js version 2.2.2 and with this setting you can select text inside the pdfViewer when the button "enable selection" is klicked.

https://dojo.telerik.com/eWUTEfeq

however, when i try to use the latest version of pdf.js (3.4.120) then the selection of text is not possible

https://dojo.telerik.com/IxuSuPuV

The last Version where it seems to work is pdf.js (3.1.81)

https://dojo.telerik.com/OxANudAx

Is this a known Issue? i don't like the idea of having to use such an old version of a js-library. Is this Problem related to kendo or to pdf.js?

Kind Regards,

Benjamin

Bug report

When opening the Zoom ComboBox in the PDFViewer, the value is changed to NaN.

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/@martin.tabakov@progress.com/OCEpaCUr/2
2. Open the Zoom ComboBox.

Current behavior

The value is changed to NaN.

Expected/desired behavior

The value should match one of the ComboBox items.

Environment

• Kendo UI version: 2022.1.119
• Browser: [all]

Tools' tooptips are localized and can be modified via messages. However, the tools in the overflow menu (when window size is resized) have the original tool text. 

Example: https://dojo.telerik.com/@iankodj/inuWOTUv

The print functionality does not work when using chrome on android and safari on iphone. 

I tested at the url https://demos.telerik.com/kendo-ui/pdfviewer/index

Please advise.

Bug report

When trying to print a file from the PDF Viewer, if the user wants to use the system print dialog, the printing dialog gets closed, but the system dialog does not appear.

Reproduction of the problem

1. Open the Pdf Viewer Demo
2. Click print
3. Then scroll and select "Print using system dialog"

Current behavior

The printing dialog gets closed and the system dialog does not appear. (screencast)

Expected/desired behavior

The system printing dialog should appear

Environment

• Kendo UI version: 2020.3.1118
• Browser: [Chrome | Edge ]

.

Bug report

Currently the result of PDFViewer printing is affected by PDFViewer scale option. When scale is less than 200%, the letters in the printed PDF appear blurred.

Reproduction of the problem

1. Go to https://demos.telerik.com/kendo-ui/pdfviewer/index
2. Set scale option to 100%
3. Print to PDF using "Microsoft Print to PDF" printer. (The final result is the same compared to actual printing to a physical printer)
4. For consistency set the following print options, e.g. in Chrome:

• Paper size: A4
• Pages per sheet: 1
• Margins: None
• Scale: Default

Current behavior

Text in printed PDF file is blurred

Expected/desired behavior

Text in printed PDF file is clear.
NOTE: Clear text may be achieved if PDFViewer scale option is set to 400% on the demo before printing.

Environment

• Kendo UI version: 2019.3.1023
• Browser: all

Hello,

i have some problems with the updated pdf viewer.

Print

The new print feature failed after the second print call.

Reproduction steps

1. call https://demos.telerik.com/kendo-ui/pdfviewer/index
2. click on print
3. abort browser print dialog
4. call again, there is no content in the print dialog preview or output

Search

Furthermore the search wont work for me, i get only an browser alert and console log entry.

console log on init

console log on search

Uncaught TypeError: Cannot read property 'matches' of undefined

I try to show the pdf viewer in an kendo window, is there any problem known?

Beste regards

Christian

Hello,

Could you help me how we can turn on Selection on PDFViewer in jQuery Solution ?

https://demos.telerik.com/kendo-ui/pdfviewer/index

In the above solution I can not select any of the below options.

Best Regards

Pawel

Bug report

The download functionality of the PDFViewer component doesn't work on Apple mobile devices both on Chrome and Safari browsers.

*Note: The above behavior is not represented on Android devices.

Reproduction of the problem

1. Open this demo https://demos.telerik.com/kendo-ui/pdfviewer/indexon iPad or iPhone
2. Tap on the "Download" icon of the PDFViewer.

Current behavior

Nothing happens when the Download icon is tapped. After this tapping part of the other component functionalities like "open" and "search" stop working.

Expected/desired behavior

When the download icon is tapped a "save file" popup should appear and the user can save the currently viewed PDF file.

Environment

• Kendo UI version: 2019.3.917
• jQuery version: x.y
• Browser: [Chrome 77.0.3865.69 | iOS 12.4.1 Safari ]

Bug report

When jQuery 3.4.1 is used paging through PDF file content results in wrong scroll position and no content in PDFViewer

Reproduction of the problem - sample file 1

1. Use the following setup:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width,user-scalable=1,initial-scale=1.0" />
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.common.min.css">
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.rtl.min.css">
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.default.min.css">

    <!-- <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script> -->
    <!-- <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script> -->
    <script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>

    <script src="https://kendo.cdn.telerik.com/2019.3.917/js/kendo.all.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.2.2/pdf.js"></script>
    <script>
    window.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.2.2/pdf.worker.js';
    </script>
</head>
<body">
    <div id="pdf-viewer"></div>
    <script>
        (function () {
            var viewer = $("#pdf-viewer").kendoPDFViewer({
                pdfjsProcessing: {
                 file: "./Export_numbered.pdf"
                }
            }).getKendoPDFViewer();
        })();
    </script>
</body>
</html>

1. Use the following sample PDF - Export_numbered.pdf

2. Click on Next page button 3 times:
   

3. Click on Next page button once again

Current behavior

Pager shows page 5, but there is no content displayed. Scrolling over the PDFViewer scrolls and displays the content.

Expected/desired behavior

Pager shows page 5 and page 5 is visible on the top of the PDFViewer.
Reproducible when the jQuery version in the setup is changed to 1.12.4 or 2.2.4.

Reproduction of the problem - sample file 2

1. Use the setup above with the PDF file from demos -
   sample.pdf
2. Click on Next page button 2 times:

Current behavior

Pager shows page 3, but there is no content displayed. Scrolling over the PDFViewer scrolls and displays the content.

Expected/desired behavior

Pager shows page 3 and page 3 is visible on the top of the PDFViewer.
Reproducible when the jQuery version in the setup is changed to 1.12.4 or 2.2.4.

Environment

• Kendo UI version: 2019.3.917
• jQuery version: 3.4.1
• Browser: all