[libgweather/benzea/wip-variant-backend: 7/7] location-entry: Sort locations in drop-down

[Benjamin Berg <bberg src gnome org>]

commit 636fee2707f84161dfbfacf844c225dc695b666d
Author: Benjamin Berg <bberg redhat com>
Date:   Thu Apr 30 12:06:52 2020 +0200

    location-entry: Sort locations in drop-down
    
    The order of locations as returned by GWeatherLocation used to be sorted
    by the localised name. However, that requires quite a lot of resources
    and is not needed in many usecases.
    
    To ensure that the parent takes precedence, it is now changed to be at
    the front for sorting purposes.
    
    As such, sort the resulting tree model by location name. Note that this
    actually changes the behaviour slightly as Countries were grouped by
    regsion before and are now all sorted by name.

 libgweather/gweather-location-entry.c | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)
---
diff --git a/libgweather/gweather-location-entry.c b/libgweather/gweather-location-entry.c
index 766fa80e..99db1ce0 100644
--- a/libgweather/gweather-location-entry.c
+++ b/libgweather/gweather-location-entry.c
@@ -165,6 +165,25 @@ dispose (GObject *object)
     G_OBJECT_CLASS (gweather_location_entry_parent_class)->dispose (object);
 }
 
+static int
+tree_compare_local_name (GtkTreeModel *model,
+                        GtkTreeIter  *a,
+                        GtkTreeIter  *b,
+                        gpointer      user_data)
+{
+    g_autofree gchar *name_a = NULL, *name_b = NULL;
+
+    gtk_tree_model_get (model, a,
+                       LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME, &name_a,
+                       -1);
+    gtk_tree_model_get (model, b,
+                       LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME, &name_b,
+                       -1);
+
+    return g_utf8_collate (name_a, name_b);
+}
+
+
 static void
 constructed (GObject *object)
 {
@@ -178,6 +197,8 @@ constructed (GObject *object)
        entry->priv->top = gweather_location_dup_world ();
 
     store = gtk_list_store_new (4, G_TYPE_STRING, GWEATHER_TYPE_LOCATION, G_TYPE_STRING, G_TYPE_STRING);
+    gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store),
+                                             tree_compare_local_name, NULL, NULL);
     fill_location_entry_model (store, entry->priv->top, NULL, NULL, NULL, entry->priv->show_named_timezones);
 
     entry->priv->model = GTK_TREE_MODEL (store);
@@ -523,8 +544,8 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
         * You shouldn't need to translate this string unless the language has a different comma.
         */
        display_name = g_strdup_printf (_("%s, %s"), gweather_location_get_name (loc), parent_display_name);
-       local_compare_name = g_strdup_printf ("%s, %s", gweather_location_get_sort_name (loc), 
parent_compare_local_name);
-       english_compare_name = g_strdup_printf ("%s, %s", gweather_location_get_english_sort_name (loc), 
parent_compare_english_name);
+       local_compare_name = g_strdup_printf ("%s, %s", parent_compare_local_name, 
gweather_location_get_sort_name (loc));
+       english_compare_name = g_strdup_printf ("%s, %s", parent_compare_english_name, 
gweather_location_get_english_sort_name (loc));
 
        while ((child = gweather_location_next_child (loc, child)))
            fill_location_entry_model (store, child,
@@ -552,9 +573,9 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
        display_name = g_strdup_printf (_("%s, %s"),
                                        gweather_location_get_name (loc), parent_display_name);
        local_compare_name = g_strdup_printf ("%s, %s",
-                                             gweather_location_get_sort_name (loc), 
parent_compare_local_name);
+                                             parent_compare_local_name, gweather_location_get_sort_name 
(loc));
        english_compare_name = g_strdup_printf ("%s, %s",
-                                               gweather_location_get_english_sort_name (loc), 
parent_compare_english_name);
+                                               parent_compare_english_name, 
gweather_location_get_english_sort_name (loc));
 
        gtk_list_store_insert_with_values (store, NULL, -1,
                                           LOC_GWEATHER_LOCATION_ENTRY_COL_LOCATION, loc,
@@ -792,6 +813,8 @@ _got_places (GObject      *source_object,
 
     completion = gtk_entry_get_completion (user_data);
     store = gtk_list_store_new (4, G_TYPE_STRING, GEOCODE_TYPE_PLACE, G_TYPE_STRING, G_TYPE_STRING);
+    gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store),
+                                             tree_compare_local_name, NULL, NULL);
     g_list_foreach (places, fill_store, store);
     g_list_free (places);
     gtk_entry_completion_set_match_func (completion, new_matcher, NULL, NULL);