[gnome-software] update dialog: Add a no results page when no update history is available

[Kalev Lember <klember src gnome org>]

commit c8e106edd417c50160cf68ef6825b76c20337af1
Author: Kalev Lember <kalevlember gmail com>
Date:   Sun May 24 14:11:13 2015 +0200

    update dialog: Add a no results page when no update history is available

 src/gs-update-dialog.c  |    2 ++
 src/gs-update-dialog.ui |   47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-update-dialog.c b/src/gs-update-dialog.c
index 874a0ff..b5eb951 100644
--- a/src/gs-update-dialog.c
+++ b/src/gs-update-dialog.c
@@ -188,6 +188,7 @@ get_installed_updates_cb (GsPluginLoader *plugin_loader,
                                     GS_PLUGIN_LOADER_ERROR,
                                     GS_PLUGIN_LOADER_ERROR_NO_RESULTS)) {
                        g_debug ("no installed updates to show");
+                       gtk_stack_set_visible_child_name (GTK_STACK (priv->stack), "empty");
                        return;
                } else if (g_error_matches (error,
                                            G_IO_ERROR,
@@ -198,6 +199,7 @@ get_installed_updates_cb (GsPluginLoader *plugin_loader,
                }
 
                g_warning ("failed to get installed updates: %s", error->message);
+               gtk_stack_set_visible_child_name (GTK_STACK (priv->stack), "empty");
                return;
        }
 
diff --git a/src/gs-update-dialog.ui b/src/gs-update-dialog.ui
index cfc6276..5771336 100644
--- a/src/gs-update-dialog.ui
+++ b/src/gs-update-dialog.ui
@@ -81,6 +81,53 @@
               </packing>
             </child>
             <child>
+              <object class="GtkBox" id="box_empty">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="halign">center</property>
+                <property name="valign">center</property>
+                <property name="hexpand">True</property>
+                <property name="vexpand">True</property>
+                <property name="spacing">16</property>
+                <property name="orientation">vertical</property>
+                <style>
+                  <class name="dim-label"/>
+                </style>
+                <child>
+                  <object class="GtkImage" id="icon_empty">
+                    <property name="visible">True</property>
+                    <property name="icon_name">gnome-software-symbolic</property>
+                    <property name="pixel-size">64</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="label_empty">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="justify">center</property>
+                    <property name="label" translatable="yes">No updates have been installed on this 
system.</property>
+                    <property name="wrap">True</property>
+                    <property name="max_width_chars">40</property>
+                    <property name="halign">center</property>
+                    <property name="valign">center</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="name">empty</property>
+              </packing>
+            </child>
+            <child>
               <object class="GtkBox" id="box7">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>