[gnome-builder] egg-radio-box: implement translation support

[Christian Hergert <chergert src gnome org>]

commit 932097e9b2cadef32318cf04049d43c9bd5bbfa2
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 11 15:04:47 2016 -0700

    egg-radio-box: implement translation support
    
    We were missing translation support when reading data in from
    GtkBuilder UI definitions. This uses the translation domain
    of the GtkBuilder file to get the translation for the input
    text if translatable="yes" in the property definition.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=772733

 contrib/egg/egg-radio-box.c |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletions(-)
---
diff --git a/contrib/egg/egg-radio-box.c b/contrib/egg/egg-radio-box.c
index 297e9e4..90fe7ae 100644
--- a/contrib/egg/egg-radio-box.c
+++ b/contrib/egg/egg-radio-box.c
@@ -348,8 +348,10 @@ egg_radio_box_new (void)
 typedef struct
 {
   EggRadioBox *self;
+  GtkBuilder  *builder;
   gchar       *id;
   GString     *text;
+  guint        translatable : 1;
 } ItemParserData;
 
 static void
@@ -378,6 +380,8 @@ item_parser_start_element (GMarkupParseContext  *context,
                                         G_MARKUP_COLLECT_STRING, "translatable", &translatable,
                                         G_MARKUP_COLLECT_INVALID))
         return;
+
+      parser_data->translatable = translatable != NULL && g_str_equal ("yes", translatable);
     }
 }
 
@@ -396,7 +400,19 @@ item_parser_end_element (GMarkupParseContext  *context,
   if (g_strcmp0 (element_name, "item") == 0)
     {
       if (parser_data->id && parser_data->text != NULL)
-        egg_radio_box_add_item (parser_data->self, parser_data->id, parser_data->text->str);
+        {
+          const gchar *str = parser_data->text->str;
+
+          if (parser_data->translatable && str != NULL)
+            {
+              const gchar *domain;
+
+              domain = gtk_builder_get_translation_domain (parser_data->builder);
+              str = g_dgettext (domain, str);
+            }
+
+          egg_radio_box_add_item (parser_data->self, parser_data->id, str);
+        }
     }
 }
 
@@ -445,6 +461,7 @@ egg_radio_box_custom_tag_start (GtkBuildable  *buildable,
 
       parser_data = g_slice_new0 (ItemParserData);
       parser_data->self = self;
+      parser_data->builder = builder;
 
       *parser = ItemParser;
       *data = parser_data;