feat: add language change handling and prompts for restart in settings

src/webdrop_bridge/ui/main_window.py

@@ -1662,6 +1662,7 @@ class MainWindow(QMainWindow):
 
         # Store current URL before opening dialog
         old_webapp_url = self.config.webapp_url
+        old_language = self.config.language
 
         # Show dialog
         dialog = SettingsDialog(self.config, self)
@@ -1669,6 +1670,7 @@ class MainWindow(QMainWindow):
 
         # Check if webapp URL changed
         new_webapp_url = self.config.webapp_url
+        language_changed = old_language != self.config.language
         if old_webapp_url != new_webapp_url:
             logger.info(f"Web application URL changed: {old_webapp_url} → {new_webapp_url}")
 
@@ -1685,6 +1687,10 @@ class MainWindow(QMainWindow):
                 self.web_view.clear_cache_and_cookies()
                 QTimer.singleShot(100, self._navigate_home)
 
+        if language_changed:
+            logger.info(f"Language changed: {old_language} → {self.config.language}")
+            self._handle_language_change_restart()
+
     def _check_domain_changed(self, old_url: str, new_url: str) -> bool:
         """Check if the domain/host has changed between two URLs.
 
@@ -1745,6 +1751,27 @@ class MainWindow(QMainWindow):
             self.web_view.clear_cache_and_cookies()
             self._navigate_home()
 
+    def _handle_language_change_restart(self) -> None:
+        """Handle language change by prompting for an optional restart."""
+        from PySide6.QtWidgets import QMessageBox
+
+        msg = QMessageBox(self)
+        msg.setWindowTitle(tr("dialog.language_changed.title"))
+        msg.setIcon(QMessageBox.Icon.Information)
+        msg.setText(tr("dialog.language_changed.msg"))
+
+        restart_now_btn = msg.addButton(
+            tr("dialog.language_changed.restart_now"), QMessageBox.ButtonRole.AcceptRole
+        )
+        msg.addButton(
+            tr("dialog.language_changed.restart_later"), QMessageBox.ButtonRole.RejectRole
+        )
+
+        msg.exec()
+
+        if msg.clickedButton() == restart_now_btn:
+            self._restart_application()
+
     def _restart_application(self) -> None:
         """Restart the application automatically.
 

src/webdrop_bridge/ui/settings_dialog.py

@@ -129,6 +129,7 @@ class SettingsDialog(QDialog):
         lang_layout.addWidget(QLabel(tr("settings.general.language_label")))
 
         self.language_combo = QComboBox()
+        self.language_combo.addItem(tr("settings.general.language_auto"), "auto")
         available = get_available_languages()
         current_lang = self.config.language
         for code, name in available.items():