[gnome-control-center/wip/gbsneto/list-layout: 8/10] window: make the sidelist and first headerbar horizontally equal

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 289d3cb86ed0df74bb7e56a82f2e1d2f8bfbdc5d
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun May 22 14:25:06 2016 -0300

    window: make the sidelist and first headerbar horizontally equal
    
    The first headerbar and the sidelist should stay synchronized,
    and this commit does so by setting the width request of the
    headerbar to the allocated width of the sidelist.

 shell/cc-window.c |   10 ++++++++++
 shell/window.ui   |    1 +
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/shell/cc-window.c b/shell/cc-window.c
index 78a8f53..fba6613 100644
--- a/shell/cc-window.c
+++ b/shell/cc-window.c
@@ -887,6 +887,15 @@ stack_page_notify_cb (GtkStack     *stack,
     }
 }
 
+static void
+sidelist_size_allocate_cb (GtkWidget    *box,
+                           GdkRectangle *allocation,
+                           CcWindow     *self)
+{
+  /* Keep the sidelist and the first headerbar synchronized */
+  gtk_widget_set_size_request (self->header, allocation->width, -1);
+}
+
 /* CcShell implementation */
 static void
 _shell_embed_widget_in_header (CcShell      *shell,
@@ -1184,6 +1193,7 @@ cc_window_class_init (CcWindowClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, gdk_window_set_cb);
   gtk_widget_class_bind_template_callback (widget_class, search_entry_changed_cb);
   gtk_widget_class_bind_template_callback (widget_class, search_entry_key_press_event_cb);
+  gtk_widget_class_bind_template_callback (widget_class, sidelist_size_allocate_cb);
   gtk_widget_class_bind_template_callback (widget_class, stack_page_notify_cb);
   gtk_widget_class_bind_template_callback (widget_class, window_map_event_cb);
 }
diff --git a/shell/window.ui b/shell/window.ui
index 0ec471a..62ce22b 100644
--- a/shell/window.ui
+++ b/shell/window.ui
@@ -16,6 +16,7 @@
             <property name="can_focus">False</property>
             <property name="hexpand">False</property>
             <property name="orientation">vertical</property>
+            <signal name="size-allocate" handler="sidelist_size_allocate_cb" object="CcWindow" swapped="no" 
/>
             <child>
               <object class="GtkSearchBar" id="search_bar">
                 <property name="visible">True</property>