From 512e7e826ddf031ba656bbe086903784cff65bb9 Mon Sep 17 00:00:00 2001
From: Sayamindu Dasgupta <sayamindu@gmail.com>
Date: Tue, 24 Mar 2009 18:59:04 +0000
Subject: CP: Disallow the user from selecting any fallbacks if English (USA) is selected (#slo:561)

---
(limited to 'extensions/cpsection/language')

diff --git a/extensions/cpsection/language/view.py b/extensions/cpsection/language/view.py
index 5b7e292..30dc05d 100644
--- a/extensions/cpsection/language/view.py
+++ b/extensions/cpsection/language/view.py
@@ -118,6 +118,8 @@ class Language(SectionView):
             previous_add_removes = self._add_remove_boxes[-2]
             previous_add_removes.hide_all()
 
+        self._determine_add_remove_visibility()
+
         combobox.show()
 
     def _attach_to_table(self, widget, row, column, padding=20, \
@@ -173,9 +175,6 @@ class Language(SectionView):
         remove_button.connect('clicked',
                             self.__remove_button_clicked_cb)
 
-        if self._selected_lang_count == 1:
-            remove_button.set_sensitive(False)
-
         add_remove_box = gtk.HButtonBox()
         add_remove_box.set_layout(gtk.BUTTONBOX_START)
         add_remove_box.set_spacing(10)
@@ -197,6 +196,10 @@ class Language(SectionView):
 
     def _check_change(self):
         selected_langs = self._get_selected_langs()
+        last_lang = selected_langs[-1]
+
+        self._determine_add_remove_visibility(last_lang = last_lang)
+            
         self._changed = (selected_langs != self._selected_locales)
 
         if self._changed == False:
@@ -226,6 +229,30 @@ class Language(SectionView):
         
         return new_codes
 
+    def _determine_add_remove_visibility(self, last_lang = None):
+        # We should not let users add fallback languages for English (USA)
+        # This is because the software is not usually _translated_ into English
+        # which means that the fallback gets selected automatically
+
+        if last_lang is None:
+            selected_langs = self._get_selected_langs()
+            last_lang = selected_langs[-1]
+            
+        add_remove_box = self._add_remove_boxes[-1]
+        buttons = add_remove_box.get_children()
+        add_button, remove_button = buttons
+        
+        if last_lang.startswith('en_US'):
+            add_button.props.visible = False
+        else:
+            add_button.props.visible = True
+
+        if self._selected_lang_count == 1:
+            remove_button.props.visible = False
+        else:
+            remove_button.props.visible = True
+
+
     def __lang_timeout_cb(self, codes):
         self._lang_sid = 0
         self._model.set_languages(codes)
--
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