add pgettext_lazy function

libresvip/utils/translation.py

@@ -1,6 +1,7 @@
 import contextlib
 import contextvars
 import gettext
+import sys
 from typing import Optional
 
 from libresvip.core.config import get_ui_settings
@@ -23,6 +24,22 @@ def gettext_lazy(message: str) -> str:
     return gettext.gettext(message)
 
 
+def pgettext_lazy(context: Optional[str], message: str) -> str:
+    if context is None:
+        frame = sys._getframe(1)
+        context = frame.f_globals.get("__package__")
+    if context is None:
+        return gettext_lazy(message)
+    if not message:
+        return message
+    with contextlib.suppress(LookupError):
+        if (translation := singleton_translation) is not None or (
+            translation := lazy_translation.get(None)
+        ) is not None:
+            return translation.pgettext(context, message)
+    return gettext.pgettext(context, message)
+
+
 # convertion functions copied from pydub
 def get_translation(
     domain: str = PACKAGE_NAME, lang: Optional[str] = None

libresvip/web/pages.py

@@ -65,6 +65,7 @@
 from libresvip.utils.search import find_index
 from libresvip.utils.text import shorten_error_message, supported_charset_names
 from libresvip.utils.translation import get_translation, lazy_translation
+from libresvip.utils.translation import gettext_lazy as _
 from libresvip.web.elements import QFab, QFabAction
 
 if TYPE_CHECKING:
@@ -239,11 +240,7 @@ def save_settings() -> None:
         context.client.on_disconnect(save_settings)
 
     translation = get_translation()
-
-    def _(message: str) -> str:
-        if message.strip():
-            return translation.gettext(message)
-        return message
+    lazy_translation.set(translation)
 
     def plugin_info(attr_name: str) -> None:
         attr = getattr(selected_formats, attr_name)