How can I open pdf files in SWT browser window whi

Question

I am working on an eclipse based application wherein I need to preview pdf documents as part of a functionality. As of now clicking on preview button opens a prompt for saving the pdf but it does not directly open the document in the required window. Is there any way where I can add any arguments/Plugins in the XULRunner or the application's ini file so that the pdf can be opened in the window itself by default ? (I am using Red Hat Linux 6.5 (Santiago))