Add the house system configuration widgets to the Edit tab

It is already filled with data, but it is not functional yet!

src/ag-window.c

@@ -29,6 +29,7 @@ struct _AgWindowPrivate {
     GtkWidget     *minute;
     GtkWidget     *second;
     GtkWidget     *timezone;
+    GtkWidget     *house_system;
 
     GtkWidget     *tab_chart;
     GtkWidget     *tab_edit;
@@ -43,6 +44,7 @@ struct _AgWindowPrivate {
     gchar         *uri;
     gboolean      aspect_table_populated;
     GtkTextBuffer *note_buffer;
+    GtkListStore  *house_system_model;
 };
 
 G_DEFINE_QUARK(ag_window_error_quark, ag_window_error);
@@ -871,11 +873,28 @@ ag_window_display_changed(GSettings *settings, gchar *key, AgWindow *window)
     ag_window_redraw_aspect_table(window);
 }
 
+static void
+ag_window_add_house_system(GsweHouseSystemInfo *house_system_info,
+                           AgWindowPrivate *priv)
+{
+    GtkTreeIter iter;
+
+    gtk_list_store_append(priv->house_system_model, &iter);
+    gtk_list_store_set(
+            priv->house_system_model, &iter,
+            0, gswe_house_system_info_get_house_system(house_system_info),
+            1, gswe_house_system_info_get_name(house_system_info),
+            -1
+        );
+}
+
 static void
 ag_window_init(AgWindow *window)
 {
     GtkAccelGroup   *accel_group;
     GSettings       *main_settings;
+    GList           *house_system_list;
+    GtkCellRenderer *house_system_renderer;
     AgWindowPrivate *priv = ag_window_get_instance_private(window);
 
     gtk_widget_init_template(GTK_WIDGET(window));
@@ -896,6 +915,23 @@ ag_window_init(AgWindow *window)
             window
         );
 
+    house_system_list = gswe_all_house_systems();
+    g_list_foreach(house_system_list, (GFunc)ag_window_add_house_system, priv);
+    g_list_free(house_system_list);
+
+    house_system_renderer = gtk_cell_renderer_text_new();
+    gtk_cell_layout_pack_start(
+            GTK_CELL_LAYOUT(priv->house_system),
+            house_system_renderer,
+            TRUE
+        );
+    gtk_cell_layout_set_attributes(
+            GTK_CELL_LAYOUT(priv->house_system),
+            house_system_renderer,
+            "text", 1,
+            NULL
+        );
+
     gtk_stack_set_visible_child_name(GTK_STACK(priv->stack), "edit");
     priv->current_tab = priv->tab_edit;
     g_object_set(
@@ -996,6 +1032,16 @@ ag_window_class_init(AgWindowClass *klass)
             AgWindow,
             longitude
         );
+    gtk_widget_class_bind_template_child_private(
+            widget_class,
+            AgWindow,
+            house_system_model
+        );
+    gtk_widget_class_bind_template_child_private(
+            widget_class,
+            AgWindow,
+            house_system
+        );
     gtk_widget_class_bind_template_child_private(
             widget_class,
             AgWindow,

src/resources/ui/ag-window.ui

@@ -104,6 +104,14 @@
     <property name="step_increment">1</property>
     <property name="page_increment">10</property>
   </object>
+  <object class="GtkListStore" id="house_system_model">
+    <columns>
+      <!-- column-name house-system-id -->
+      <column type="GsweHouseSystem"/>
+      <!-- column-name house-system-name -->
+      <column type="gchararray"/>
+    </columns>
+  </object>
   <object class="GtkTextBuffer" id="note_buffer">
   </object>
   <template class="AgWindow" parent="GtkApplicationWindow">
@@ -510,8 +518,8 @@
                 <property name="label" translatable="yes" context="Chart edit, Timezone label">Timezone</property>
               </object>
               <packing>
-                <property name="left_attach">4</property>
-                <property name="top_attach">5</property>
+                <property name="left_attach">7</property>
+                <property name="top_attach">3</property>
               </packing>
             </child>
             <child>
@@ -521,6 +529,29 @@
                 <property name="adjustment">timezone_adjust</property>
                 <property name="digits">1</property>
               </object>
+              <packing>
+                <property name="left_attach">7</property>
+                <property name="top_attach">4</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLabel" id="house_system_label">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes" context="Chart edit, House system label">House system</property>
+              </object>
+              <packing>
+                <property name="left_attach">4</property>
+                <property name="top_attach">5</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkComboBox" id="house_system">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="model">house_system_model</property>
+                <property name="id_column">0</property>
+              </object>
               <packing>
                 <property name="left_attach">5</property>
                 <property name="top_attach">5</property>