[[!meta title="XULRunner rocks!"]] [[!meta date="2011-03-15 22:16"]] [[!meta author="rohieb"]] [[!meta license="CC-BY-SA 3.0"]] For [[one of my projects|projects/infopoint-html]], I needed an application to display a web page in full screen mode. At first, I used Firefox with the [AutoHide extension][0], but this solution was more of a hack and not easy to deploy to multiple machines — I worked with a pre-configured user profile that was copied every time the application started. Furthermore, after each update, Firefox would check for compatibility of installed plugins and displayed a nasty dialog in the meantime. So I tried to move away from Firefox and do something on my own, something slim which did just what I wanted, nothing more, and do it good — according to the [UNIX philosophy][1]. But writing another C/C++/Python/whatever application from scratch was not an option (implementing an HTML renderer would be a pain, and I didn’t fancy reading extensive manuals about WebKit, Gecko or any other rendering engine). After a while of thinking, which included thought fragments of [Songbird][2] and [Conkeror][3], I decided to give [XULrunner][4] a shot (for those who do not know, XUL is the XML-based user interface language used by the Mozilla applications and the Firefox and Thunderbird extensions, and XULRunner is an interpreter and run-time environment for XUL documents). So after a while of hacking (there is a good [tutorial on the Mozilla Developer Network][5]), I ended up with a few lines of code: [[!format xml """