some changes for translation

DemonEditor.spec

@@ -11,7 +11,8 @@ block_cipher = None
 
 ui_files = [('app/ui/*.glade', 'ui'),
             ('app/ui/*.css', 'ui'),
-            ('app/ui/*.ui', 'ui')
+            ('app/ui/*.ui', 'ui'),
+            ('app/ui/lang*', 'share/locale')
             ]
 
 a = Analysis([EXE_NAME],

app/ui/dialogs.py

@@ -94,17 +94,21 @@ def get_chooser_dialog(transient, settings, pattern, name):
 
 
 def get_file_chooser_dialog(transient, text, settings, action_type, file_filter):
-    dialog = Gtk.FileChooserDialog(get_message(text) if text else "", transient,
-                                   action_type if action_type is not None else Gtk.FileChooserAction.SELECT_FOLDER,
-                                   (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_OPEN, Gtk.ResponseType.OK),
-                                   use_header_bar=IS_GNOME_SESSION)
+    dialog = Gtk.FileChooserNative()
+    dialog.set_title(get_message(text) if text else "")
+    dialog.set_transient_for(transient)
+    dialog.set_action(action_type if action_type is not None else Gtk.FileChooserAction.SELECT_FOLDER)
+    dialog.set_create_folders(False)
+    dialog.set_modal(True)
+
     if file_filter is not None:
         dialog.add_filter(file_filter)
 
     path = settings.data_dir_path
     dialog.set_current_folder(path)
     response = dialog.run()
-    if response == Gtk.ResponseType.OK:
+
+    if response == Gtk.ResponseType.ACCEPT:
         if dialog.get_filename():
             path = dialog.get_filename()
             if action_type is not Gtk.FileChooserAction.OPEN:

app/ui/uicommons.py

@@ -1,4 +1,7 @@
+import gettext
+import locale
 import os
+import sys
 
 import gi
 from enum import Enum, IntEnum
@@ -6,19 +9,22 @@ from enum import Enum, IntEnum
 gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk, Gdk
 
+GTK_PATH = os.environ.get("GTK_PATH", None)
 # For launching from the bundle.
-if os.getcwd() == "/":
-    try:
-        os.chdir(os.environ["GTK_PATH"])
-    except KeyError:
-        pass
+if os.getcwd() == "/" and GTK_PATH:
+    os.chdir(GTK_PATH)
 
-    # path to *.glade files
+# path to *.glade files
 UI_RESOURCES_PATH = "app/ui/" if os.path.exists("app/ui/") else "ui/"
 
 IS_GNOME_SESSION = int(bool(os.environ.get("GNOME_DESKTOP_SESSION_ID")))
 # translation
+os.environ["LANG"] = "{}.{}".format(*locale.getlocale())
 TEXT_DOMAIN = "demon-editor"
+LANG_PATH = GTK_PATH + "/share/locale" if GTK_PATH else UI_RESOURCES_PATH + "lang"
+gettext.bindtextdomain(TEXT_DOMAIN, LANG_PATH)
+if sys.platform != "darwin":
+    locale.bindtextdomain(TEXT_DOMAIN, LANG_PATH)
 
 theme = Gtk.IconTheme.get_default()
 _IMAGE_MISSING = theme.load_icon("image-missing", 16, 0) if theme.lookup_icon("image-missing", 16, 0) else None