[libgweather/benzea/wip-variant-backend: 12/15] location-entry: Sort locations in drop-down

[Bastien Nocera <hadess src gnome org>]

commit a221531edfce5904bcf533e236baa7c048fc8af5
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.
    
    As such, sort the resulting tree model by location name. Note that this
    actually changes the behaviour slightly as Countries were grouped by
    region before and are now all sorted by name.
    
    To do so, add a new column that allows direct comparison for sorting
    purposes. Note that this cannot be the same as the compare name, because
    order needs to be reversed for sorting but must remain the same for
    matching.

 libgweather/gweather-location-entry.c | 45 +++++++++++++++++++++++++++++++----
 1 file changed, 40 insertions(+), 5 deletions(-)
---
diff --git a/libgweather/gweather-location-entry.c b/libgweather/gweather-location-entry.c
index f8071aa3..15141442 100644
--- a/libgweather/gweather-location-entry.c
+++ b/libgweather/gweather-location-entry.c
@@ -70,6 +70,7 @@ static void set_location_internal (GWeatherLocationEntry *entry,
 static void
 fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
                           const char *parent_display_name,
+                          const char *parent_sort_local_name,
                           const char *parent_compare_local_name,
                           const char *parent_compare_english_name,
                           gboolean show_named_timezones);
@@ -78,6 +79,7 @@ enum LOC
 {
     LOC_GWEATHER_LOCATION_ENTRY_COL_DISPLAY_NAME = 0,
     LOC_GWEATHER_LOCATION_ENTRY_COL_LOCATION,
+    LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME,
     LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME,
     LOC_GWEATHER_LOCATION_ENTRY_COL_ENGLISH_COMPARE_NAME,
     LOC_GWEATHER_LOCATION_ENTRY_NUM_COLUMNS
@@ -87,6 +89,7 @@ enum PLACE
 {
     PLACE_GWEATHER_LOCATION_ENTRY_COL_DISPLAY_NAME = 0,
     PLACE_GWEATHER_LOCATION_ENTRY_COL_PLACE,
+    PLACE_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME,
     PLACE_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME
 };
 
@@ -165,6 +168,25 @@ 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_SORT_NAME, &name_a,
+                       -1);
+    gtk_tree_model_get (model, b,
+                       LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME, &name_b,
+                       -1);
+
+    return g_utf8_collate (name_a, name_b);
+}
+
+
 static void
 constructed (GObject *object)
 {
@@ -177,8 +199,10 @@ constructed (GObject *object)
     if (!entry->priv->top)
        entry->priv->top = gweather_location_get_world ();
 
-    store = gtk_list_store_new (4, G_TYPE_STRING, GWEATHER_TYPE_LOCATION, G_TYPE_STRING, G_TYPE_STRING);
-    fill_location_entry_model (store, entry->priv->top, NULL, NULL, NULL, entry->priv->show_named_timezones);
+    store = gtk_list_store_new (5, G_TYPE_STRING, GWEATHER_TYPE_LOCATION, G_TYPE_STRING, 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, NULL, 
entry->priv->show_named_timezones);
 
     entry->priv->model = GTK_TREE_MODEL (store);
     completion = gtk_entry_get_completion (GTK_ENTRY (entry));
@@ -485,12 +509,13 @@ gweather_location_entry_set_city (GWeatherLocationEntry *entry,
 static void
 fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
                           const char *parent_display_name,
+                          const char *parent_sort_local_name,
                           const char *parent_compare_local_name,
                           const char *parent_compare_english_name,
                           gboolean show_named_timezones)
 {
     g_autoptr(GWeatherLocation) child = NULL;
-    char *display_name, *local_compare_name, *english_compare_name;
+    char *display_name, *local_sort_name, *local_compare_name, *english_compare_name;
 
     switch (gweather_location_get_level (loc)) {
     case GWEATHER_LOCATION_WORLD:
@@ -501,6 +526,7 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
        while ((child = gweather_location_next_child (loc, child)))
            fill_location_entry_model (store, child,
                                       parent_display_name,
+                                      parent_sort_local_name,
                                       parent_compare_local_name,
                                       parent_compare_english_name,
                                       show_named_timezones);
@@ -512,6 +538,7 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
            fill_location_entry_model (store, child,
                                       gweather_location_get_name (loc),
                                       gweather_location_get_sort_name (loc),
+                                      gweather_location_get_sort_name (loc),
                                       gweather_location_get_english_sort_name (loc),
                                       show_named_timezones);
        break;
@@ -523,12 +550,13 @@ 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_sort_name = g_strdup_printf ("%s, %s", parent_sort_local_name, gweather_location_get_sort_name 
(loc));
        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);
 
        while ((child = gweather_location_next_child (loc, child)))
            fill_location_entry_model (store, child,
-                                      display_name, local_compare_name, english_compare_name,
+                                      display_name, local_sort_name, local_compare_name, 
english_compare_name,
                                       show_named_timezones);
 
        g_free (display_name);
@@ -551,6 +579,8 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
         */
        display_name = g_strdup_printf (_("%s, %s"),
                                        gweather_location_get_name (loc), parent_display_name);
+       local_sort_name = g_strdup_printf ("%s, %s",
+                                          parent_sort_local_name, gweather_location_get_sort_name (loc));
        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",
@@ -559,6 +589,7 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
        gtk_list_store_insert_with_values (store, NULL, -1,
                                           LOC_GWEATHER_LOCATION_ENTRY_COL_LOCATION, loc,
                                           LOC_GWEATHER_LOCATION_ENTRY_COL_DISPLAY_NAME, display_name,
+                                          LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME, local_sort_name,
                                           LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME, 
local_compare_name,
                                           LOC_GWEATHER_LOCATION_ENTRY_COL_ENGLISH_COMPARE_NAME, 
english_compare_name,
                                           -1);
@@ -573,6 +604,7 @@ fill_location_entry_model (GtkListStore *store, GWeatherLocation *loc,
            gtk_list_store_insert_with_values (store, NULL, -1,
                                               LOC_GWEATHER_LOCATION_ENTRY_COL_LOCATION, loc,
                                               LOC_GWEATHER_LOCATION_ENTRY_COL_DISPLAY_NAME, 
gweather_location_get_name (loc),
+                                              LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME, 
gweather_location_get_sort_name (loc),
                                               LOC_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME, 
gweather_location_get_sort_name (loc),
                                               LOC_GWEATHER_LOCATION_ENTRY_COL_ENGLISH_COMPARE_NAME, 
gweather_location_get_english_sort_name (loc),
                                               -1);
@@ -757,6 +789,7 @@ fill_store (gpointer data, gpointer user_data)
     gtk_list_store_insert_with_values (user_data, NULL, -1,
                                       PLACE_GWEATHER_LOCATION_ENTRY_COL_PLACE, place,
                                       PLACE_GWEATHER_LOCATION_ENTRY_COL_DISPLAY_NAME, display_name,
+                                      PLACE_GWEATHER_LOCATION_ENTRY_COL_LOCAL_SORT_NAME, compare_name,
                                       PLACE_GWEATHER_LOCATION_ENTRY_COL_LOCAL_COMPARE_NAME, compare_name,
                                       -1);
 
@@ -791,7 +824,9 @@ _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);
+    store = gtk_list_store_new (5, G_TYPE_STRING, GEOCODE_TYPE_PLACE, G_TYPE_STRING, 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);