[gnome-control-center] printers: Don't move to beginning of list of new devices

[Marek Kašík <mkasik src gnome org>]

commit bba624e9d34395ef3d3f5a135fab159144853de3
Author: Marek Kasik <mkasik redhat com>
Date:   Wed May 15 15:08:32 2013 +0200

    printers: Don't move to beginning of list of new devices
    
    Don't reset position of tree view containing new devices when
    an actualization of the tree view is required.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=693185

 panels/printers/new-printer-dialog.ui   |   11 +++++++++++
 panels/printers/pp-new-printer-dialog.c |   10 +++++-----
 2 files changed, 16 insertions(+), 5 deletions(-)
---
diff --git a/panels/printers/new-printer-dialog.ui b/panels/printers/new-printer-dialog.ui
index 6a1ef29..5fb98ee 100644
--- a/panels/printers/new-printer-dialog.ui
+++ b/panels/printers/new-printer-dialog.ui
@@ -1,6 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <!-- interface-requires gtk+ 3.0 -->
+  <object class="GtkListStore" id="devices-liststore">
+    <columns>
+      <!-- column-name device_icon -->
+      <column type="gchararray"/>
+      <!-- column-name device_name -->
+      <column type="gchararray"/>
+      <!-- column-name device_display_name -->
+      <column type="gchararray"/>
+    </columns>
+  </object>
   <object class="GtkDialog" id="dialog">
     <property name="width_request">500</property>
     <property name="height_request">350</property>
@@ -76,6 +86,7 @@
                       <object class="GtkTreeView" id="devices-treeview">
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
+                        <property name="model">devices-liststore</property>
                         <property name="headers_visible">False</property>
                         <child internal-child="selection">
                           <object class="GtkTreeSelection" id="treeview-selection"/>
diff --git a/panels/printers/pp-new-printer-dialog.c b/panels/printers/pp-new-printer-dialog.c
index 9781489..20bc3d5 100644
--- a/panels/printers/pp-new-printer-dialog.c
+++ b/panels/printers/pp-new-printer-dialog.c
@@ -286,7 +286,7 @@ pp_new_printer_dialog_init (PpNewPrinterDialog *dialog)
   GtkStyleContext           *context;
   GtkWidget                 *widget;
   GError                    *error = NULL;
-  gchar                     *objects[] = { "dialog", NULL };
+  gchar                     *objects[] = { "dialog", "devices-liststore", NULL };
   guint                      builder_result;
 
   priv = PP_NEW_PRINTER_DIALOG_GET_PRIVATE (dialog);
@@ -1406,7 +1406,10 @@ actualize_devices_list (PpNewPrinterDialog *dialog)
   treeview = (GtkTreeView *)
     gtk_builder_get_object (priv->builder, "devices-treeview");
 
-  store = gtk_list_store_new (3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
+  store = (GtkListStore *)
+    gtk_builder_get_object (priv->builder, "devices-liststore");
+
+  gtk_list_store_clear (store);
 
   for (item = priv->devices; item; item = item->next)
     {
@@ -1484,14 +1487,11 @@ actualize_devices_list (PpNewPrinterDialog *dialog)
       gtk_widget_set_sensitive (GTK_WIDGET (treeview), TRUE);
     }
 
-  gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (store));
-
   if (!no_device &&
       gtk_tree_model_get_iter_first ((GtkTreeModel *) store, &iter) &&
       (selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview))) != NULL)
     gtk_tree_selection_select_iter (selection, &iter);
 
-  g_object_unref (store);
   update_spinner_state (dialog);
 }