Bug 669031 - Save the Scheduled Transactions number of months

The number of months to display is saved when the Scheduled Transaction
page is left open and reverts to the default of 12 when closed. This
commit add to the existing save layout menu so that it will save the
number of months to display to a preference setting so it will be
remembered

gnucash/gnome/gnc-plugin-page-sx-list.cpp

@@ -82,6 +82,7 @@ G_GNUC_UNUSED static QofLogModule log_module = GNC_MOD_GUI_SX;
 #define PLUGIN_PAGE_SX_LIST_CM_CLASS "plugin-page-sx-list"
 #define STATE_SECTION "SX Transaction List"
 #define GNC_PREF_DIVIDER_POS "divider-position"
+#define GNC_PREF_NUM_OF_MONTHS "number-of-months"
 
 typedef struct GncPluginPageSxListPrivate
 {
@@ -580,8 +581,10 @@ gnc_plugin_page_sx_list_create_widget (GncPluginPage *plugin_page)
         priv->gdcal = GNC_DENSE_CAL(gnc_dense_cal_new_with_model (window, GNC_DENSE_CAL_MODEL(priv->dense_cal_model)));
         g_object_ref_sink (priv->gdcal);
 
-        gnc_dense_cal_set_months_per_col (priv->gdcal, 4);
-        gnc_dense_cal_set_num_months (priv->gdcal, 12);
+        /* Set number of months from preference, default 12 */
+        gchar *num_months = gnc_prefs_get_string (GNC_PREFS_GROUP_SXED, GNC_PREF_NUM_OF_MONTHS);
+        gnc_dense_cal_set_num_months (priv->gdcal, atoi (num_months));
+        g_free (num_months);
 
         gtk_container_add (GTK_CONTAINER(swin), GTK_WIDGET(priv->gdcal));
     }
@@ -760,16 +763,23 @@ gnc_plugin_page_sx_list_cmd_save_layout (GSimpleAction *simple,
 {
     auto plugin_page = GNC_PLUGIN_PAGE_SX_LIST(user_data);
     GncPluginPageSxListPrivate *priv;
+    gchar *num_of_months;
     gint paned_position;
 
     g_return_if_fail (GNC_IS_PLUGIN_PAGE_SX_LIST(plugin_page));
 
     priv = GNC_PLUGIN_PAGE_SX_LIST_GET_PRIVATE(plugin_page);
 
+    num_of_months = g_strdup_printf ("%d", gnc_dense_cal_get_num_months (priv->gdcal));
     paned_position = gtk_paned_get_position (GTK_PANED(priv->widget));
 
     gnc_prefs_set_float (GNC_PREFS_GROUP_SXED, GNC_PREF_DIVIDER_POS,
                          paned_position);
+
+    gnc_prefs_set_string (GNC_PREFS_GROUP_SXED, GNC_PREF_NUM_OF_MONTHS,
+                          num_of_months);
+
+    g_free (num_of_months);
 }
 
 static void

gnucash/gschemas/org.gnucash.GnuCash.dialogs.sxs.gschema.xml.in

@@ -54,6 +54,11 @@
       <summary>How many days in advance to notify the user.</summary>
       <description>How many days in advance to notify the user.</description>
     </key>
+    <key name="number-of-months" type="s">
+      <default>'12'</default>
+      <summary>The number of months to be shown in editor.</summary>
+      <description>The number of months to be shown in editor.</description>
+    </key>
     <key name="divider-position" type="d">
       <default>160</default>
       <summary>The horizontal position of the editor divider.</summary>