fix(window): Fix the Detection translator feature flag

dialect/search_provider/search_provider.in

@@ -18,6 +18,7 @@ import gi
 
 gi.require_version("Secret", "1")
 gi.require_version("Soup", "3.0")
+
 from gi.events import GLibEventLoopPolicy
 from gi.repository import Gio, GLib
 
@@ -89,7 +90,7 @@ class TranslateServiceApplication(Gio.Application):
 
         self.loaded = False
         self.translations = {}  # Translations store
-        self.src_language = "auto"
+        self.src_language = "auto" if self.translator.supports_detection else self.translator.recent_src_langs[0]
         self.dest_language = None
 
         # Translator
@@ -280,10 +281,12 @@ class TranslateServiceApplication(Gio.Application):
             await self.translator.init_trans()
 
             self.loaded = True
+            self.src_language = "auto" if self.translator.supports_detection else self.translator.recent_src_langs[0]
             self.dest_language = self.translator.recent_dest_langs[0]
             self.translator.settings.connect("changed", self._on_translator_settings_changed)
 
         except Exception:
+            self.src_language = None
             self.dest_language = None
             raise
 
@@ -292,6 +295,7 @@ class TranslateServiceApplication(Gio.Application):
 
     def _on_translator_settings_changed(self, _settings, key: str):
         if key == "src-langs" or key == "dest-langs":
+            self.src_language = "auto" if self.translator.supports_detection else self.translator.recent_src_langs[0]
             self.dest_language = self.translator.recent_dest_langs[0]
         else:
             self.loaded = False

dialect/window.py

@@ -510,15 +510,20 @@ async def load_tts(self):
 
     def translate(self, text: str, src_lang: str | None, dest_lang: str | None):
         """
-        Translates the given text from auto detected language to last used
-        language
+        Translates the given text from auto detected or last used src language to
+        last used dest language
         """
         if not self.provider["trans"]:
             return
 
-        # Set src lang to Auto
         if src_lang is None:
-            self.src_lang_selector.selected = "auto"
+            # Check if provider supports detection
+            if self.provider["trans"].supports_detection:
+                # Set src lang to Auto
+                self.src_lang_selector.selected = "auto"
+            else:
+                # Fallback to last used src lang
+                self.src_lang_selector.selected = self.provider["trans"].recent_src_langs[0]
         else:
             self.src_lang_selector.selected = src_lang
         if dest_lang is not None and dest_lang in self.provider["trans"].dest_languages:
@@ -1044,7 +1049,10 @@ def _on_src_lang_changed(self, *_args):
         self._pick_spell_checking_language(code)
 
         # Rewrite recent langs
-        self.src_recent_lang_model.set_langs(self.src_langs, auto=True)
+        self.src_recent_lang_model.set_langs(
+            self.src_langs,
+            self.provider["trans"].supports_detection,
+        )
 
         self._check_switch_enabled()
         self._check_speech_enabled()
@@ -1159,6 +1167,7 @@ async def _on_translation(self, *_args):
 
                 if translation.detected and self.src_lang_selector.selected == "auto":
                     if Settings.get().src_auto:
+                        # If the user likes defaulting to Auto, we set the insight instead of switching langs
                         self.src_lang_selector.set_insight(
                             self.provider["trans"].normalize_lang_code(translation.detected)
                         )