[gnome-builder] GbCommandBar: short circuit if we already shown/hiden.

[Christian Hergert <chergert src gnome org>]

commit f0fc2065a781f8d13555185a841b8f74d9c94e7e
Author: Christian Hergert <christian hergert me>
Date:   Wed Dec 17 21:07:13 2014 -0800

    GbCommandBar: short circuit if we already shown/hiden.

 src/commands/gb-command-bar.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/commands/gb-command-bar.c b/src/commands/gb-command-bar.c
index 456f729..de21055 100644
--- a/src/commands/gb-command-bar.c
+++ b/src/commands/gb-command-bar.c
@@ -79,6 +79,9 @@ gb_command_bar_hide (GbCommandBar *bar)
 
   g_return_if_fail (GB_IS_COMMAND_BAR (bar));
 
+  if (!gtk_revealer_get_reveal_child (GTK_REVEALER (bar)))
+    return;
+
   gtk_revealer_set_reveal_child (GTK_REVEALER (bar), FALSE);
 
   workbench = gb_widget_get_workbench (GTK_WIDGET (bar));
@@ -118,6 +121,9 @@ gb_command_bar_show (GbCommandBar *bar)
 
   g_return_if_fail (GB_IS_COMMAND_BAR (bar));
 
+  if (gtk_revealer_get_reveal_child (GTK_REVEALER (bar)))
+    return;
+
   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (bar));
   focus = gtk_window_get_focus (GTK_WINDOW (toplevel));
   gb_command_bar_set_last_focus (bar, focus);