Set OnionShare language based on the locale stored in settings, and prompt user to restart OnionShare after changing their language

onionshare/__init__.py

@@ -33,7 +33,11 @@ def main(cwd=None):
     """
     common = Common()
 
+    # Load settings right away, in order to get locale setting for strings
+    common.load_settings(config)
     strings.load_strings(common)
+
+    # Display OnionShare banner
     print(strings._('version_string').format(common.version))
 
     # OnionShare CLI in OSX needs to change current working directory (#132)
@@ -88,8 +92,9 @@ def main(cwd=None):
         if not valid:
             sys.exit()
 
-    # Load settings
-    common.load_settings(config)
+    # Re-load settings, if a custom config was passed in
+    if config:
+        common.load_settings(config)
 
     # Debug mode?
     common.debug = debug

onionshare/strings.py

@@ -22,36 +22,33 @@ import locale
 import os
 
 strings = {}
+translations = {}
 
 
-def load_strings(common, default="en"):
+def load_strings(common):
     """
     Loads translated strings and fallback to English
     if the translation does not exist.
     """
-    global strings
+    global strings, translations
 
-    # find locale dir
-    locale_dir = common.get_resource_path('locale')
-
-    # load all translations
+    # Load all translations
     translations = {}
-    for filename in os.listdir(locale_dir):
-        abs_filename = os.path.join(locale_dir, filename)
-        lang, ext = os.path.splitext(filename)
-        if ext == '.json':
-            with open(abs_filename, encoding='utf-8') as f:
-                translations[lang] = json.load(f)
+    for locale in common.settings.available_locales:
+        locale_dir = common.get_resource_path('locale')
+        filename = os.path.join(locale_dir, "{}.json".format(locale))
+        with open(filename, encoding='utf-8') as f:
+            translations[locale] = json.load(f)
 
-    strings = translations[default]
-    lc, enc = locale.getdefaultlocale()
-    if lc:
-        lang = lc[:2]
-        if lang in translations:
-            # if a string doesn't exist, fallback to English
-            for key in translations[default]:
-                if key in translations[lang]:
-                    strings[key] = translations[lang][key]
+    # Build strings
+    default_locale = 'en'
+    current_locale = common.settings.get('locale')
+    strings = {}
+    for s in translations[default_locale]:
+        if s in translations[current_locale]:
+            strings[s] = translations[current_locale][s]
+        else:
+            strings[s] = translations[default_locale][s]
 
 
 def translated(k, gui=False):

onionshare_gui/__init__.py

@@ -59,7 +59,11 @@ def main():
     common = Common()
     common.define_css()
 
+    # Load settings right away, in order to get locale setting for strings
+    common.load_settings()
     strings.load_strings(common)
+
+    # Display OnionShare banner
     print(strings._('version_string').format(common.version))
 
     # Allow Ctrl-C to smoothly quit the program instead of throwing an exception

onionshare_gui/onionshare_gui.py

@@ -57,9 +57,10 @@ class OnionShareGui(QtWidgets.QMainWindow):
         self.setWindowIcon(QtGui.QIcon(self.common.get_resource_path('images/logo.png')))
         self.setMinimumWidth(850)
 
-        # Load settings
+        # Load settings, if a custom config was passed in
         self.config = config
-        self.common.load_settings(self.config)
+        if self.config:
+            self.common.load_settings(self.config)
 
         # System tray
         menu = QtWidgets.QMenu()

onionshare_gui/settings_dialog.py

@@ -830,8 +830,29 @@ class SettingsDialog(QtWidgets.QDialog):
         """
         self.common.log('SettingsDialog', 'save_clicked')
 
+        def changed(s1, s2, keys):
+            """
+            Compare the Settings objects s1 and s2 and return true if any values
+            have changed for the given keys.
+            """
+            for key in keys:
+                if s1.get(key) != s2.get(key):
+                    return True
+            return False
+
         settings = self.settings_from_fields()
         if settings:
+            # If language changed, inform user they need to restart OnionShare
+            if changed(settings, self.old_settings, ['locale']):
+                # Look up error message in different locale
+                new_locale = settings.get('locale')
+                if new_locale in strings.translations and 'gui_settings_language_changed_notice' in strings.translations[new_locale]:
+                    notice = strings.translations[new_locale]['gui_settings_language_changed_notice']
+                else:
+                    notice = strings._('gui_settings_language_changed_notice')
+            Alert(self.common, notice, QtWidgets.QMessageBox.Information)
+
+            # Save the new settings
             settings.save()
 
             # If Tor isn't connected, or if Tor settings have changed, Reinitialize
@@ -840,15 +861,6 @@ class SettingsDialog(QtWidgets.QDialog):
             if not self.local_only:
                 if self.onion.is_authenticated():
                     self.common.log('SettingsDialog', 'save_clicked', 'Connected to Tor')
-                    def changed(s1, s2, keys):
-                        """
-                        Compare the Settings objects s1 and s2 and return true if any values
-                        have changed for the given keys.
-                        """
-                        for key in keys:
-                            if s1.get(key) != s2.get(key):
-                                return True
-                        return False
 
                     if changed(settings, self.old_settings, [
                         'connection_type', 'control_port_address',

share/locale/en.json

@@ -181,5 +181,6 @@
     "gui_upload_finished_range": "Uploaded {} to {}",
     "gui_upload_finished": "Uploaded {}",
     "gui_open_folder_error_nautilus": "Cannot open folder because nautilus is not available. The file is here: {}",
-    "gui_settings_language_label": "Preferred language"
+    "gui_settings_language_label": "Preferred language",
+    "gui_settings_language_changed_notice": "Restart OnionShare for your change in language to take effect."
 }