http://bugzilla.gnome.org/show_bug.cgi?id=338933

Don't show .desktop files which are specific to other desktop
environments ("OnlyShowIn=foo" where foo != GNOME).

This patch ignores those files at a very low level
(NautilusDirectoryAsync), and for all directories.  It should probably
only do it for ~/Desktop:  the original bug is about not wanting to
show the .desktop files which KDE drops in your ~/Desktop (those files
do have OnlyShowIn=KDE).

2006-05-22  Federico Mena Quintero  <federico@novell.com>

	* libnautilus-private/nautilus-directory-async.c
	(is_foreign_desktop_file): Argh, check that the OnlyShowIn /
	NotShowIn strings exist before testing their contents.  Fixes
	https://bugzilla.novell.com/show_bug.cgi?id=177777; this was
	filtering all .desktop files!

2006-05-16  Federico Mena Quintero  <federico@novell.com>

	* libnautilus-private/nautilus-directory-async.c
	(is_foreign_desktop_file): Split the contents of the OnlyShowIn
	key; it can be a list of strings.  Also consider the NotShowIn
	key.  Fixes https://bugzilla.novell.com/show_bug.cgi?id=176123
	
2006-04-18  Federico Mena Quintero  <federico@novell.com>

	Skip .desktop files which are specific to other desktop
	environments ("OnlyShowIn=foo").  Fixes these bugs:
	http://bugzilla.gnome.org/show_bug.cgi?id=338933
	https://bugzilla.novell.com/show_bug.cgi?id=158158

	* libnautilus-private/nautilus-directory-async.c
	(is_foreign_desktop_file): New helper function: returns TRUE if
	it gets a .desktop file with "OnlyShowIn=" not for GNOME.
	(directory_load_one): Use is_foreign_desktop_file(), and skip
	.desktop files which belong to other desktop environments.

	* src/nautilus-application.c (remove_desktop_dot_hidden):
	Unlink ~/Desktop/.hidden, which was a Suse hack.
	(finish_startup): Call remove_desktop_dot_hidden().

================================================================================
--- nautilus-2.15.4/libnautilus-private/nautilus-directory-async.c
+++ nautilus-2.15.4/libnautilus-private/nautilus-directory-async.c
@@ -939,12 +939,79 @@
 	}
 }
 
+static gboolean
+string_array_contains (char **array,
+		       const char *str)
+{
+	char **p;
+
+	if (!array)
+		return FALSE;
+
+	for (p = array; *p; p++)
+		if (g_ascii_strcasecmp (*p, str) == 0) {
+			return TRUE;
+		}
+
+	return FALSE;
+}
+
+static gboolean
+is_foreign_desktop_file (NautilusDirectory *directory,
+			 GnomeVFSFileInfo *info)
+{
+	const char *mime_type;
+	char *uri;
+	GnomeDesktopItem *ditem;
+	gboolean retval;
+
+	if (!(info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_MIME_TYPE)) {
+		return FALSE;
+	}
+
+	mime_type = gnome_vfs_file_info_get_mime_type (info);
+	if (g_ascii_strcasecmp (mime_type, "application/x-desktop") != 0) {
+		return FALSE;
+	}
+
+	uri = nautilus_directory_get_file_uri (directory, info->name);
+
+	/* NULL GError */
+	ditem = gnome_desktop_item_new_from_uri (uri, 0, NULL);
+
+	retval = FALSE;
+
+	if (ditem) {
+		char **only_show_in;
+		char **not_show_in;
+
+		only_show_in = gnome_desktop_item_get_strings (ditem, GNOME_DESKTOP_ITEM_ONLY_SHOW_IN);
+		if (only_show_in && !string_array_contains (only_show_in, "GNOME")) {
+			retval = TRUE;
+		}
+		g_strfreev (only_show_in);
+
+		not_show_in = gnome_desktop_item_get_strings (ditem, "NotShowIn");
+		if (not_show_in && string_array_contains (not_show_in, "GNOME")) {
+			retval = TRUE;
+		}
+		g_strfreev (not_show_in);
+
+		gnome_desktop_item_unref (ditem);
+	}
+
+	g_free (uri);
+
+	return retval;
+}
+
 static void
 directory_load_one (NautilusDirectory *directory,
 		    GnomeVFSFileInfo *info)
 {
 	if (info == NULL || info->name == NULL ||
-	    is_dot_or_dot_dot (info->name)) {
+	    is_dot_or_dot_dot (info->name) ||
+	    is_foreign_desktop_file (directory, info)) {
 		return;
 	}
 
--- nautilus-2.15.4/src/nautilus-application.c
+++ nautilus-2.15.4/src/nautilus-application.c
@@ -384,6 +384,45 @@
         nautilus_module_extension_list_free (providers);
 }
 
+/* Suse had a hack in Nautilus (dot-hidden.dif) that would create a
+ * ~/Desktop/hidden file with the following entries, in order to skip
+ * launchers created by KDE:
+ *
+ *   myComputer.desktop
+ *   Printer.desktop
+ *   Network.desktop
+ *   SuSE.desktop
+ *   MozillaFirefox.desktop
+ *   Office.desktop
+ *   trash.desktop
+ *
+ * This was a hack around https://bugzilla.novell.com/show_bug.cgi?id=58875, but
+ * it creates problems:  people like to drag a MozillaFirefox.desktop to their
+ * desktop, and it would be ignored due to that patch.
+ *
+ * So, now we unlink() the ~/Desktop/.hidden file under the rationale that that
+ * folder is under your complete control --- if you don't want to see a file in
+ * there, you can just delete it.
+ *
+ * The .desktop files for KDE launchers should have "OnlyShowIn=KDE" in them;
+ * now we support this properly.  See
+ * https://bugzilla.novell.com/show_bug.cgi?id=158158 for this.
+ */
+static void
+remove_desktop_dot_hidden (void)
+{
+	char *desktop_dir;
+	char *dot_hidden;
+
+	desktop_dir = nautilus_get_desktop_directory ();
+	dot_hidden = g_build_filename (desktop_dir, ".hidden", NULL);
+
+	unlink (dot_hidden);
+
+	g_free (desktop_dir);
+	g_free (dot_hidden);
+}
+
 static void
 finish_startup (NautilusApplication *application)
 {
@@ -401,6 +440,9 @@
 	/* Make the desktop work with old Nautilus. */
 	migrate_old_nautilus_files ();
 
+	/* Remove artifact from the old dot-hidden.dif patch in Suse */
+	remove_desktop_dot_hidden ();
+
 	/* Initialize the desktop link monitor singleton */
 	nautilus_desktop_link_monitor_get ();
 }