Safari: only one try to print

[hand-coding]

Attach (recommended) or Link to PDF file here:
http://mozilla.github.io/pdf.js/web/compressed.tracemonkey-pldi-09.pdf
This problem occurs with every documents I tested.

Configuration:

• Web browser and its version: Safari 11.0.3 and Safari Preview r51
• Operating system and its version: macOS 10.13.3
• PDF.js version: 2.5.3
• Is a browser extension: No

Steps to reproduce the problem:

1. Visit the pdf.js live demo at http://mozilla.github.io/pdf.js/web/viewer.html
2. Click the “print“ icon (or command+P)
3. Wait for the modal dialog to show then click “Cancel”
4. Click the “print“ icon again (or command+P)

What is the expected behavior?
The Print window should show a preview for the first page and I should be able to browse all of the 14 pages thumbnails like the first time I tried.

What went wrong?
A modal window appears reading: This web page ask to be printed. Do you want to proceed?
Cancel - Print

Clicking Print shows a one page empty preview

All subsequent tries will fail the same way until the user reload the page.

[hand-coding]

That seems to be a Safari printing issue which occurs also with other js library. I’m not sure anybody should spend any time on it.
I decided to implement the “nativePrint” method used by pdf-highlighter.com and described here: https://pdf-highlighter.com/pdfjs-printing-issue-use-browser-support/.
Works well in Safari, Opera, Chrome and Windows Edge.
IExplorer (without plug-in) will use pdf.js print method (as well as Firefox, unfortunately, since FF sees the iframe content as cross-origin, even if it's not, and thus forbid printing).

[tohvanah]

@hand-coding How can the native printing in a child iFrame be accomplished with a base64 data URL?

[hand-coding]

Please start a new thread.

[timvandermeij]

Closing since this is fixed by #12315.