[gnome-control-center] common: Make language filtering smarter

[Rui Matos <rtcm src gnome org>]

commit 864b98e1414035478046bb38f47f4a02f2eff80b
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Feb 4 19:39:27 2013 +0100

    common: Make language filtering smarter
    
    We normalize both the filter string from the user and the language
    label to disregard case and accents. Then we try to match the language
    label on its native translation, the current LC_MESSAGES translation
    and untranslated.

 panels/common/cc-language-chooser.c |   59 ++++++++++++++++++++++++++++------
 1 files changed, 48 insertions(+), 11 deletions(-)
---
diff --git a/panels/common/cc-language-chooser.c b/panels/common/cc-language-chooser.c
index 6fe7b42..bbc5b09 100644
--- a/panels/common/cc-language-chooser.c
+++ b/panels/common/cc-language-chooser.c
@@ -33,6 +33,7 @@
 #include "egg-list-box/egg-list-box.h"
 
 #include "cc-common-language.h"
+#include "cc-util.h"
 
 #define GNOME_DESKTOP_USE_UNSTABLE_API
 #include <libgnome-desktop/gnome-languages.h>
@@ -138,10 +139,14 @@ language_widget_new (const gchar *locale_id,
                      gboolean     is_extra)
 {
         gchar *locale_name;
+        gchar *locale_current_name;
+        gchar *locale_untranslated_name;
         GtkWidget *widget;
         GtkWidget *check;
 
         locale_name = gnome_get_language_from_locale (locale_id, locale_id);
+        locale_current_name = gnome_get_language_from_locale (locale_id, NULL);
+        locale_untranslated_name = gnome_get_language_from_locale (locale_id, "C");
 
         widget = padded_label_new (locale_name, is_extra);
 
@@ -154,11 +159,11 @@ language_widget_new (const gchar *locale_id,
 
         g_object_set_data (G_OBJECT (widget), "check", check);
         g_object_set_data_full (G_OBJECT (widget), "locale-id", g_strdup (locale_id), g_free);
-        g_object_set_data_full (G_OBJECT (widget), "locale-name", g_strdup (locale_name), g_free);
+        g_object_set_data_full (G_OBJECT (widget), "locale-name", locale_name, g_free);
+        g_object_set_data_full (G_OBJECT (widget), "locale-current-name", locale_current_name, g_free);
+        g_object_set_data_full (G_OBJECT (widget), "locale-untranslated-name", locale_untranslated_name, 
g_free);
         g_object_set_data (G_OBJECT (widget), "is-extra", GUINT_TO_POINTER (is_extra));
 
-        g_free (locale_name);
-
         return widget;
 }
 
@@ -234,9 +239,12 @@ language_visible (GtkWidget *child,
 {
         GtkDialog *chooser = user_data;
         CcLanguageChooserPrivate *priv = GET_PRIVATE (chooser);
-        gchar *locale_name;
-        const gchar *filter_contents;
+        gchar *locale_name = NULL;
+        gchar *locale_current_name = NULL;
+        gchar *locale_untranslated_name = NULL;
+        gchar *filter_contents = NULL;
         gboolean is_extra;
+        gboolean visible;
 
         if (child == priv->more_item)
                 return !priv->showing_extra;
@@ -246,16 +254,45 @@ language_visible (GtkWidget *child,
                 return TRUE;
 
         is_extra = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (child), "is-extra"));
-        locale_name = g_object_get_data (G_OBJECT (child), "locale-name");
-
-        filter_contents = gtk_entry_get_text (GTK_ENTRY (priv->filter_entry));
-        if (*filter_contents && strcasestr (locale_name, filter_contents) == NULL)
-        return FALSE;
 
         if (!priv->showing_extra && is_extra)
                 return FALSE;
 
-        return TRUE;
+        filter_contents =
+                cc_util_normalize_casefold_and_unaccent (gtk_entry_get_text (GTK_ENTRY 
(priv->filter_entry)));
+
+        if (!filter_contents)
+                return TRUE;
+
+        visible = FALSE;
+
+        locale_name =
+                cc_util_normalize_casefold_and_unaccent (g_object_get_data (G_OBJECT (child), 
"locale-name"));
+        if (strstr (locale_name, filter_contents)) {
+                visible = TRUE;
+                goto out;
+        }
+
+        locale_current_name =
+                cc_util_normalize_casefold_and_unaccent (g_object_get_data (G_OBJECT (child), 
"locale-current-name"));
+        if (strstr (locale_current_name, filter_contents)) {
+                visible = TRUE;
+                goto out;
+        }
+
+        locale_untranslated_name =
+                cc_util_normalize_casefold_and_unaccent (g_object_get_data (G_OBJECT (child), 
"locale-untranslated-name"));
+        if (strstr (locale_untranslated_name, filter_contents)) {
+                visible = TRUE;
+                goto out;
+        }
+
+out:
+        g_free (filter_contents);
+        g_free (locale_untranslated_name);
+        g_free (locale_current_name);
+        g_free (locale_name);
+        return visible;
 }
 
 static void