From: Wolfgang Rosenauer

Subject: NonGnome/KDE integration

References:

https://bugzilla.novell.com/show_bug.cgi?id=170055

Caveats: desktop file name of Firefox is hardcoded to MozillaFirefox

diff --git a/mozilla/browser/base/content/nsContextMenu.js b/mozilla/browser/base/content/nsContextMenu.js

index 53bc215..725990b 100644

--- a/mozilla/browser/base/content/nsContextMenu.js

+++ b/mozilla/browser/base/content/nsContextMenu.js

@@ -317,7 +317,9 @@ nsContextMenu.prototype = {

     if (AppConstants.HAVE_SHELL_SERVICE) {

       // Only enable Set as Desktop Background if we can get the shell service.

       var shell = getShellService();

-      if (shell)

+      var env = Components.classes["@mozilla.org/process/environment;1"]

+                          .getService(Components.interfaces.nsIEnvironment);

+      if (shell && env.get('DESKTOP_SESSION') == "gnome")

         haveSetDesktopBackground = shell.canSetDesktopBackground;

     }