Add App Filtering Page and Session Validation (ref #633)

FluentFlyoutWPF/Classes/Utils/MediaPlayerData.cs

@@ -66,11 +66,8 @@ public static (string, ImageSource?) GetAndCacheMediaPlayerData(string mediaPlay
             {
                 try
                 {
-                    // pre-filter processes without a main window handle
-                    if (p.MainWindowHandle == IntPtr.Zero)
-                    {
-                        return null;
-                    }
+                    // we no longer filter processes without main window handle, 
+                    // as background media processes may not have one.
 
                     var mainModule = p.MainModule;
                     if (mainModule == null) return null;

FluentFlyoutWPF/Controls/TaskbarWidgetControl.xaml.cs

@@ -409,10 +409,7 @@ private async void Previous_Click(object sender, RoutedEventArgs e)
     {
         if (_mainWindow == null) return;
 
-        var mediaManager = _mainWindow.mediaManager;
-        if (mediaManager == null) return;
-
-        var focusedSession = mediaManager.GetFocusedSession();
+        var focusedSession = _mainWindow.GetActiveMediaSession();
         if (focusedSession == null) return;
 
         await focusedSession.ControlSession.TrySkipPreviousAsync();
@@ -422,30 +419,17 @@ private async void PlayPause_Click(object sender, RoutedEventArgs e)
     {
         if (_mainWindow == null) return;
 
-        var mediaManager = _mainWindow.mediaManager;
-        if (mediaManager == null) return;
-
-        var focusedSession = mediaManager.GetFocusedSession();
+        var focusedSession = _mainWindow.GetActiveMediaSession();
         if (focusedSession == null) return;
 
-        if (_isPaused) // paused
-        {
-            await focusedSession.ControlSession.TryPlayAsync();
-        }
-        else // playing
-        {
-            await focusedSession.ControlSession.TryPauseAsync();
-        }
+        await focusedSession.ControlSession.TryTogglePlayPauseAsync();
     }
 
     private async void Next_Click(object sender, RoutedEventArgs e)
     {
         if (_mainWindow == null) return;
 
-        var mediaManager = _mainWindow.mediaManager;
-        if (mediaManager == null) return;
-
-        var focusedSession = mediaManager.GetFocusedSession();
+        var focusedSession = _mainWindow.GetActiveMediaSession();
         if (focusedSession == null) return;
 
         await focusedSession.ControlSession.TrySkipNextAsync();