How to run a script after password security added to pdf

[Jo_2013]

I have a document which is placed on the company intranet (it needs to be password protected), if a copy is downloaded, the next time it is opened a watermark will show on each page.

The script is placed as an action on the page open event.

this.addWatermarkFromText("Uncontrolled document", 0, font.Helv, 24, color.red);

This script works however once the pdf is password protected it will no longer run the script.

NotAllowedError: Security settings prevent access to this property or method.

Doc.addWatermarkFromText:1:Page undefined:Open

Can anyone please advise how an embedded javascript can run after the document is password protected?

Thanks

[Joel_Geraci · Accepted solution]

You're confusing two different things.

JavaScript can absolutely run on a document after it has been password protected. However, JavaScript can't modify the document in ways that the protection prohibits... just like if you had manually tried to add a watermark.

In short, you won't be able to add a watermark after the document has been protected.

What you can do instead is put a button field over the entire page that and then use a script to control it's visibility. The button icon would be a PDF of the watermark you want. Because the field will always appear on top of the page content, you'll want to make it somewhat transparent as well.

[Jo_2013]

Thank you for your assistance Joel. I added a button the same size as the pdf page and used the following page open action script. var f = this.getField("Button"); f.display = display.visible It works perfectly, much appreciated.