Clean up dial action to make sure all top level code paths have a try catch so the plugin won't crash

src/FocusVolumeControl/AudioHelper.cs

@@ -54,6 +54,14 @@ public class AudioHelper
 
 	static object _lock = new object();
 
+	public void ResetCache()
+	{
+		lock(_lock)
+		{
+			_current = null;
+		}
+	}
+
 	public IAudioSession GetActiveSession(FallbackBehavior fallbackBehavior)
 	{
 		lock (_lock)
@@ -67,11 +75,11 @@ public class AudioHelper
 
 			if(_current == null)
 			{
-				if(fallbackBehavior == FallbackBehavior.SystemSounds)
+				if(fallbackBehavior == FallbackBehavior.SystemSounds && _current is not SystemSoundsAudioSession)
 				{
 					_current = GetSystemSounds();
 				}
-				else if(fallbackBehavior == FallbackBehavior.SystemVolume)
+				else if(fallbackBehavior == FallbackBehavior.SystemVolume && _current is not SystemVolumeAudioSession)
 				{
 					_current = GetSystemVolume();
 				}

src/FocusVolumeControl/DialAction.cs

@@ -73,54 +73,56 @@ public class DialAction : EncoderBase
 		_ = UpdateStateIfNeeded();
 	}
 
+	public override void Dispose()
+	{
+		Logger.Instance.LogMessage(TracingLevel.DEBUG, "Disposing");
+		if (_foregroundWindowChangedEvent != IntPtr.Zero)
+		{
+			Native.UnhookWinEvent(_foregroundWindowChangedEvent);
+		}
+		_dispatcher.InvokeShutdown();
+	}
+
 	public override async void DialDown(DialPayload payload)
 	{
-		//dial pressed down
+		try
+		{
 			Logger.Instance.LogMessage(TracingLevel.INFO, "Dial Down");
 			await ToggleMuteAsync();
 		}
+		catch (Exception ex)
+		{
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unexpected Error in DialDown:\n {ex}");
+		}
+	}
+	public override void DialUp(DialPayload payload) { }
 
 	public override async void TouchPress(TouchpadPressPayload payload)
+	{
+		try
 		{
 			Logger.Instance.LogMessage(TracingLevel.INFO, "Touch Press");
 			if (payload.IsLongPress)
 			{
-			_audioHelper.ResetAll();
+				await ResetAllAsync();
 			}
 			else
 			{
 				await ToggleMuteAsync();
 			}
 		}
-
-	async Task ToggleMuteAsync()
-	{
-		try
-		{
-
-			if (_currentAudioSession != null)
-			{
-				_currentAudioSession.ToggleMute();
-				await UpdateStateIfNeeded();
-			}
-			else
-			{
-				await Connection.ShowAlert();
-			}
-		}
 		catch (Exception ex)
 		{
-			await Connection.ShowAlert();
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unexpected Error in TouchPress:\n {ex}");
-			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unable to toggle mute: {ex.Message}");
 		}
 	}
 
 	public override async void DialRotate(DialRotatePayload payload)
 	{
-		Logger.Instance.LogMessage(TracingLevel.INFO, "Dial Rotate");
-		//dial rotated. ticks positive for right, negative for left
 		try
 		{
+			Logger.Instance.LogMessage(TracingLevel.INFO, "Dial Rotate");
+			//dial rotated. ticks positive for right, negative for left
 			if (_currentAudioSession != null)
 			{
 				_currentAudioSession.IncrementVolumeLevel(settings.StepSize, payload.Ticks);
@@ -133,24 +135,46 @@ public class DialAction : EncoderBase
 		}
 		catch (Exception ex)
 		{
+			_audioHelper.ResetCache();
 			await Connection.ShowAlert();
-			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unable to toggle mute: {ex.Message}");
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unable to increment volume:\n {ex}");
 		}
 	}
 
-	public override void DialUp(DialPayload payload)
+	async Task ResetAllAsync()
 	{
-		//dial unpressed
+		try
+		{
+			_audioHelper.ResetAll();
+		}
+		catch
+		{
+			_audioHelper.ResetCache();
+			await Connection.ShowAlert();
+			throw;
+		}
 	}
 
-	public override void Dispose()
+	async Task ToggleMuteAsync()
 	{
-		Logger.Instance.LogMessage(TracingLevel.DEBUG, "Disposing");
+		try
-		if (_foregroundWindowChangedEvent != IntPtr.Zero)
 		{
-			Native.UnhookWinEvent(_foregroundWindowChangedEvent);
+			if (_currentAudioSession != null)
+			{
+				_currentAudioSession.ToggleMute();
+				await UpdateStateIfNeeded();
+			}
+			else
+			{
+				await Connection.ShowAlert();
+			}
+		}
+		catch
+		{
+			_audioHelper.ResetCache();
+			await Connection.ShowAlert();
+			throw;
 		}
-		_dispatcher.InvokeShutdown();
 	}
 
 	public override async void OnTick()
@@ -169,7 +193,8 @@ public class DialAction : EncoderBase
 		}
 		catch (Exception ex)
 		{
-			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Exception on WinEventProc\n {ex}");
+			_audioHelper.ResetCache();
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Exception on Tick:\n {ex}");
 		}
 	}
 
@@ -177,7 +202,6 @@ public class DialAction : EncoderBase
 	{
 		try
 		{
-
 			if (_currentAudioSession != null)
 			{
 
@@ -213,20 +237,40 @@ public class DialAction : EncoderBase
 
 
 	public override void ReceivedSettings(ReceivedSettingsPayload payload)
+	{
+		try
 		{
 			Tools.AutoPopulateSettings(settings, payload.Settings);
 			SaveSettings();
 		}
-
+		catch (Exception ex)
-	private Task SaveSettings()
 		{
-		return Connection.SetSettingsAsync(JObject.FromObject(settings));
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unexpected Error in SaveSettings:\n {ex}");
+		}
+	}
+
+	private async Task SaveSettings()
+	{
+		try
+		{
+			await Connection.SetSettingsAsync(JObject.FromObject(settings));
+		}
+		catch (Exception ex)
+		{
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unexpected Error in SaveSettings:\n {ex}");
+		}
 	}
 
 
 	public void WinEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
+	{
+		try
 		{
 			OnTick();
 		}
-
+		catch (Exception ex)
+		{
+			Logger.Instance.LogMessage(TracingLevel.ERROR, $"Unexpected Error in DialDown:\n {ex}");
+		}
+	}
 }