[network-manager-applet] editor: show a more helpful error message if no VPN plugins are installed

[Dan Williams <dcbw src gnome org>]

commit 8b8cadfb6cef877a9d2c4ed8507a5997604c8796
Author: Dan Williams <dcbw redhat com>
Date:   Tue Jun 4 12:32:36 2013 -0500

    editor: show a more helpful error message if no VPN plugins are installed

 src/connection-editor/nm-connection-list.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/src/connection-editor/nm-connection-list.c b/src/connection-editor/nm-connection-list.c
index 15b5c25..9ae92eb 100644
--- a/src/connection-editor/nm-connection-list.c
+++ b/src/connection-editor/nm-connection-list.c
@@ -919,6 +919,7 @@ void
 nm_connection_list_create (NMConnectionList *self, GType ctype, const char *detail)
 {
        ConnectionTypeData *types;
+       char *error_msg;
        int i;
 
        g_return_if_fail (NM_IS_CONNECTION_LIST (self));
@@ -929,9 +930,13 @@ nm_connection_list_create (NMConnectionList *self, GType ctype, const char *deta
                        break;
        }
        if (!types[i].name) {
-               nm_connection_editor_error (NULL,
-                                           _("Error creating connection"),
-                                           _("Don't know how to create '%s' connections"), g_type_name 
(ctype));
+               if (ctype == NM_TYPE_SETTING_VPN)
+                       error_msg = g_strdup (_("No VPN plugins are installed."));
+               else
+                       error_msg = g_strdup_printf (_("Don't know how to create '%s' connections"), 
g_type_name (ctype));
+
+               nm_connection_editor_error (NULL, _("Error creating connection"), error_msg);
+               g_free (error_msg);
        } else {
                new_connection_of_type (GTK_WINDOW (self->dialog),
                                        detail,