Put preview track details in status bar

app/musicmuster.py

@@ -693,7 +693,6 @@ class PreviewManager:
         mixer.init()
         self.intro: Optional[int] = None
         self.path: str = ""
-        self.row_number: Optional[int] = None
         self.start_time: Optional[dt.datetime] = None
         self.track_id: int = 0
 
@@ -767,22 +766,14 @@ class PreviewManager:
 
         self.intro = ms
 
-    def set_track_info(self, info: TrackInfo) -> None:
-        self.track_id = info.track_id
-        self.row_number = info.row_number
-
-        with db.Session() as session:
-            track = session.get(Tracks, self.track_id)
-            if not track:
-                raise ValueError(
-                    f"PreviewManager: unable to retreive track {self.track_id=}"
-                )
-        self.intro = track.intro
-        self.path = track.path
+    def set_track_info(self, track_id: int, track_intro: int, track_path: str) -> None:
+        self.track_id = track_id
+        self.intro = track_intro
+        self.path = track_path
 
         # Check file readable
         if file_is_unreadable(self.path):
-            raise ValueError(f"PreviewManager.__init__: {track.path=} unreadable")
+            raise ValueError(f"PreviewManager.__init__: {track_path=} unreadable")
 
         mixer.music.load(self.path)
 
@@ -790,7 +781,6 @@ class PreviewManager:
         mixer.music.stop()
         mixer.music.unload()
         self.path = ""
-        self.row_number = None
         self.track_id = 0
         self.start_time = None
 
@@ -2263,10 +2253,25 @@ class Window(QMainWindow):
                     return
             if not track_info:
                 return
-            self.preview_manager.set_track_info(track_info)
-            self.preview_manager.play()
+            with db.Session() as session:
+                track = session.get(Tracks, track_info.track_id)
+                if not track:
+                    raise ApplicationError(
+                        f"musicmuster.preview: unable to retreive track {track_info.track_id=}"
+                    )
+                self.preview_manager.set_track_info(
+                    track_id=track.id,
+                    track_path=track.path,
+                    track_intro=track.intro
+                )
+                self.preview_manager.play()
+                self.show_status_message(
+                    f"Preview: {track.title} / {track.artist} (row {track_info.row_number})",
+                    0
+                )
         else:
             self.preview_manager.stop()
+            self.show_status_message("", 0)
 
     def preview_arm(self):
         """Manager arm button for setting intro length"""
@@ -2528,10 +2533,14 @@ class Window(QMainWindow):
     def show_status_message(self, message: str, timing: int) -> None:
         """
         Show status message in status bar for timing milliseconds
+        Clear message if message is null string
         """
 
         if self.statusbar:
-            self.statusbar.showMessage(message, timing)
+            if message:
+                self.statusbar.showMessage(message, timing)
+            else:
+                self.statusbar.clearMessage()
 
     def show_track(self, playlist_track: RowAndTrack) -> None:
         """Scroll to show track in plt"""