Opening PDF file in SWT Browser - XulRunner default viewer

Question

Situation:

1. My RCP application uses XulRunner
   
2. System has two installed PDF viewers (Acrobat, Gimp)
   
3. Firefox has Gimp set as default viewer
   
4. I want to make my SWT Browser composite in RCP application ignore default viewer and use Acrobat if it is installed
   
5. If it is not, I want to use default viewer

Question:

1. Can I achieve this by (temporarily) setting some XulRunner or System property in my application?

Answer 1

You can create a Process in Java and execute the below command line to open PDFs in Adobe Acrobat Reader forever.

start "" /max "ExecutablePathAdobeAcrobat.exe" /A "pagemode=FullScreen" "PDFFilePath.pdf" 

Answer 2

Check this link : https://support.mozilla.org/en-US/kb/disable-built-pdf-viewer-and-use-another-viewer

I am pretty sure there should be a way to codefully disable the gimp or whatever built-in app the firefox uses. you might need to use some APIs that modify preferences in Firefox