[gnome-builder/editor-layout] stack: hide header box when no tabs are visible

[Christian Hergert <chergert src gnome org>]

commit 02ed63ba493557b179b55ccafb8d955b790eabf5
Author: Christian Hergert <christian hergert me>
Date:   Sun Nov 30 18:40:15 2014 -0800

    stack: hide header box when no tabs are visible

 src/resources/ui/gb-tab-stack.ui |    4 ++--
 src/tabs/gb-tab-stack.c          |    4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/src/resources/ui/gb-tab-stack.ui b/src/resources/ui/gb-tab-stack.ui
index 37ecb7a..39a0dae 100644
--- a/src/resources/ui/gb-tab-stack.ui
+++ b/src/resources/ui/gb-tab-stack.ui
@@ -4,8 +4,8 @@
   <template class="GbTabStack" parent="GtkBox">
     <property name="orientation">vertical</property>
     <child>
-      <object class="GtkBox">
-        <property name="visible">true</property>
+      <object class="GtkBox" id="header_box">
+        <property name="visible">false</property>
         <property name="orientation">horizontal</property>
         <style>
           <class name="linked"/>
diff --git a/src/tabs/gb-tab-stack.c b/src/tabs/gb-tab-stack.c
index dbb7aeb..aafae22 100644
--- a/src/tabs/gb-tab-stack.c
+++ b/src/tabs/gb-tab-stack.c
@@ -29,6 +29,7 @@ struct _GbTabStackPrivate
   GtkButton     *close;
   GtkComboBox   *combo;
   GtkStack      *controls;
+  GtkBox        *header_box;
   GtkMenuButton *stack_menu;
   GtkStack      *stack;
   GtkListStore  *store;
@@ -399,6 +400,8 @@ gb_tab_stack_add_tab (GbTabStack *stack,
                            stack,
                            G_CONNECT_SWAPPED);
 
+  gtk_widget_show (GTK_WIDGET (stack->priv->header_box));
+
   g_signal_emit (stack, gSignals [CHANGED], 0);
 }
 
@@ -507,6 +510,7 @@ gb_tab_stack_class_init (GbTabStackClass *klass)
   gtk_widget_class_bind_template_child_internal_private (widget_class, GbTabStack, controls);
   gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, close);
   gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, combo);
+  gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, header_box);
   gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, stack);
   gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, stack_menu);
   gtk_widget_class_bind_template_child_private (widget_class, GbTabStack, store);