From 02f49be9e2f58032a7c124ea77d7983834dc80b6 Mon Sep 17 00:00:00 2001
From: Cole Robinson <crobinso@redhat.com>
Date: Fri, 25 Apr 2014 19:13:44 -0400
Subject: [PATCH] serialcon: Hide scrollbar until there's something to scroll

---
 virtManager/serialcon.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/virtManager/serialcon.py b/virtManager/serialcon.py
index f2e4452a..6662084d 100644
--- a/virtManager/serialcon.py
+++ b/virtManager/serialcon.py
@@ -376,6 +376,14 @@ class vmmSerialConsole(vmmGObject):
         self.box.append_page(self.error_label, Gtk.Label(""))
         self.box.show_all()
 
+        scrollbar.hide()
+        scrollbar.get_adjustment().connect(
+            "changed", self._scrollbar_adjustment_changed, scrollbar)
+
+    def _scrollbar_adjustment_changed(self, adjustment, scrollbar):
+        scrollbar.set_visible(
+            adjustment.get_upper() > adjustment.get_page_size())
+
     def _cleanup(self):
         self.console.cleanup()
         self.console = None