C4C PDF print mashup to disable download or print for business compliance

[Yanbing]

Dear Expert,

I had a customer has a special requirement. There is a mashup page that could open e-invoice PDF file after click the e-invoice button. The special requirement is that customer want to disable displaying "Download" and "Print" button when the PDF is open.

Here is current PDF report when it's open

It's expected open like below

As far as I know, we could add Ruby script source codes into the Event Handler when the file is open. If we use Ruby or Javascript, there are third party library could disable displaying the related tool button. But I don't know how to do this in PDI through action scripts.

It would be appreciated that if you have any solutions to fulfill this requirement.

Best Regards.