[gnome-control-center] background: Add "add" button

[Bastien Nocera <hadess src gnome org>]

commit 575d8d2463e415c8deef72a585d90e371ea2c33e
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Feb 14 10:21:35 2011 +0000

    background: Add "add" button
    
    To allow adding arbitrary files to the list.

 panels/background/background.ui         |   37 ++++++++++++++++++++++++++++--
 panels/background/cc-background-panel.c |    9 +++++++
 2 files changed, 43 insertions(+), 3 deletions(-)
---
diff --git a/panels/background/background.ui b/panels/background/background.ui
index 53fd990..c3ffc13 100644
--- a/panels/background/background.ui
+++ b/panels/background/background.ui
@@ -30,7 +30,7 @@
       <object class="GtkVBox" id="vbox2">
         <property name="visible">True</property>
         <property name="orientation">vertical</property>
-        <property name="spacing">6</property>
+        <property name="spacing">0</property>
         <child>
           <object class="GtkComboBox" id="sources-combobox">
             <property name="visible">True</property>
@@ -45,10 +45,11 @@
           <packing>
             <property name="expand">False</property>
             <property name="position">0</property>
+            <property name="padding">6</property>
           </packing>
         </child>
         <child>
-          <object class="GtkScrolledWindow" id="scrolledwindow2">
+          <object class="GtkScrolledWindow" id="scrolledwindow1">
             <property name="width_request">220</property>
             <property name="height_request">380</property>
             <property name="visible">True</property>
@@ -75,27 +76,57 @@
             </child>
           </object>
           <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
             <property name="position">1</property>
           </packing>
         </child>
+        <child>
+          <object class="GtkToolbar" id="toolbar1">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="icon_size">1</property>
+            <child>
+              <object class="GtkToolButton" id="add_button">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="use_action_appearance">False</property>
+                <property name="use_underline">True</property>
+                <property name="icon_name">list-add-symbolic</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">2</property>
+          </packing>
+        </child>
       </object>
       <packing>
         <property name="expand">False</property>
+        <property name="fill">True</property>
         <property name="position">0</property>
       </packing>
     </child>
     <child>
       <object class="GtkVBox" id="vbox3">
         <property name="visible">True</property>
-        <property name="orientation">vertical</property>
+        <property name="can_focus">False</property>
         <property name="spacing">6</property>
         <child>
           <object class="GtkHBox" id="heading-hbox">
             <property name="visible">True</property>
+            <property name="can_focus">False</property>
             <property name="spacing">24</property>
             <child>
               <object class="GtkLabel" id="background-label">
                 <property name="visible">True</property>
+                <property name="can_focus">False</property>
                 <property name="xalign">0</property>
                 <property name="label">Current background</property>
                 <attributes>
diff --git a/panels/background/cc-background-panel.c b/panels/background/cc-background-panel.c
index 5464dcf..015afbc 100644
--- a/panels/background/cc-background-panel.c
+++ b/panels/background/cc-background-panel.c
@@ -757,6 +757,7 @@ cc_background_panel_init (CcBackgroundPanel *self)
   GError *err = NULL;
   GtkWidget *widget;
   GtkListStore *store;
+  GtkStyleContext *context;
 
   priv = self->priv = BACKGROUND_PANEL_PRIVATE (self);
 
@@ -830,6 +831,14 @@ cc_background_panel_init (CcBackgroundPanel *self)
                     G_CALLBACK (backgrounds_changed_cb),
                     self);
 
+  /* Join treeview and buttons */
+  widget = WID ("scrolledwindow1");
+  context = gtk_widget_get_style_context (widget);
+  gtk_style_context_set_junction_sides (context, GTK_JUNCTION_BOTTOM);
+  widget = WID ("toolbar1");
+  context = gtk_widget_get_style_context (widget);
+  gtk_style_context_set_junction_sides (context, GTK_JUNCTION_TOP);
+
   /* setup preview area */
   widget = WID ("preview-area");
   g_signal_connect (widget, "draw", G_CALLBACK (preview_draw_cb),