From: Wolfgang Rosenauer

NonGnome/KDE integration

References:

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

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

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

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

@@ -237,17 +237,19 @@ nsContextMenu.prototype = {

     this.showItem("context-sep-viewsource", shouldShow);

     // Set as Desktop background depends on whether an image was clicked on,

     // and only works if we have a shell service.

     var haveSetDesktopBackground = false;

 #ifdef 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 = true;

 #endif

     this.showItem("context-setDesktopBackground",

                   haveSetDesktopBackground && this.onLoadedImage);

     if (haveSetDesktopBackground && this.onLoadedImage) {

       document.getElementById("context-setDesktopBackground")

               .disabled = this.disableSetDesktopBackground();