Media controls (MPRIS, Windows SMTC); stop old tracks when switching

AudioMode.py

@@ -11,7 +11,7 @@ import flet as ft
 
 from Core import AudioExtensions, DisplayPath, Home, IsAudioFile, Note, Palette
 from Covers import CoverFor
-from Metadata import ReadDetails, ReadTrack
+from Metadata import ReadDetails, ReadTrack, Track
 from Player import Player
 from Transport import CoverImage, Transport
 from Widgets import App, EmptyState, InfoTable
@@ -36,6 +36,7 @@ class AudioMode(ft.Column):
         self.Rows: dict[str, ft.Container] = {}
         self.Current: Optional[str] = None
         self.AutoAdvance = TheApp.Config.AudioAutoAdvance
+        self.NowPlaying: Optional[Track] = None  # for the system media controls
 
         ThePlayer.OnEnded = lambda: TheApp.Page.run_task(self._Ended)
         ThePlayer.OnChanged = lambda: self.Bar.Refresh()
@@ -193,7 +194,9 @@ class AudioMode(ft.Column):
             self.TheApp.Notify(f"{Path(FilePath).name} is gone.", "error")
             return
         self.Current = FilePath
+        self.NowPlaying = Info
         await self.ThePlayer.Load(FilePath, Duration=Info.Duration)  # errors arrive through OnError
+        self.TheApp.MediaChanged()
         self._Highlight()
         self._Show(self.List)
         self._ScrollTo(FilePath)
@@ -265,9 +268,13 @@ class AudioMode(ft.Column):
             self.Bar.Refresh()
 
     def _ToggleLoop(self, e) -> None:
-        self.ThePlayer.Loop = not self.ThePlayer.Loop
+        self.SetLoop(not self.ThePlayer.Loop)
+
+    def SetLoop(self, Enabled: bool) -> None:
+        self.ThePlayer.Loop = Enabled
         self.LoopButton.icon_color = Palette.Mauve if self.ThePlayer.Loop else Palette.Overlay0
         self._Show(self.LoopButton)
+        self.TheApp.MediaModesChanged()
 
     def _ToggleAdvance(self, e) -> None:
         self.AutoAdvance = not self.AutoAdvance