Fixed: send initial values when device connects

Implemented various TODO's

Windows/MassiveKnob.Plugin.CoreAudio/Base/BaseDeviceSettings.cs

@@ -6,7 +6,7 @@ namespace MassiveKnob.Plugin.CoreAudio.Base
     {
         public Guid? DeviceId { get; set; }
         
-        // TODO more options, like positioning and style
+        // TODO (nice to have) more options, like positioning and style
         public bool OSD { get; set; } = true;
     }
 }

Windows/MassiveKnob.Plugin.CoreAudio/Base/BaseDeviceSettingsView.xaml.cs

@@ -1,24 +1,9 @@
-using System;
+namespace MassiveKnob.Plugin.CoreAudio.Base
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
-
-namespace MassiveKnob.Plugin.CoreAudio.Base
 {
     /// <summary>
     /// Interaction logic for BaseDeviceSettingsView.xaml
     /// </summary>
-    public partial class BaseDeviceSettingsView : UserControl
+    public partial class BaseDeviceSettingsView
     {
         public BaseDeviceSettingsView()
         {

Windows/MassiveKnob.Plugin.CoreAudio/GetMuted/DeviceGetMutedAction.cs

@@ -6,8 +6,6 @@ using Microsoft.Extensions.Logging;
 
 namespace MassiveKnob.Plugin.CoreAudio.GetMuted
 {
-    // TODO send out initial muted state after proper initialization
-    
     public class DeviceGetMutedAction : IMassiveKnobAction
     {
         public Guid ActionId { get; } = new Guid("86646ca7-f472-4c5a-8d0f-7e5d2d162ab9");
@@ -54,6 +52,9 @@ namespace MassiveKnob.Plugin.CoreAudio.GetMuted
 
                 deviceChanged?.Dispose();
                 deviceChanged = playbackDevice?.MuteChanged.Subscribe(MuteChanged);
+                
+                if (playbackDevice != null)
+                    actionContext.SetDigitalOutput(settings.Inverted ? !playbackDevice.IsMuted : playbackDevice.IsMuted);
             }
 
 

Windows/MassiveKnob.Plugin.CoreAudio/GetVolume/DeviceGetVolumeAction.cs

@@ -6,8 +6,6 @@ using Microsoft.Extensions.Logging;
 
 namespace MassiveKnob.Plugin.CoreAudio.GetVolume
 {
-    // TODO send out initial volume after proper initialization
-    
     public class DeviceGetVolumeAction : IMassiveKnobAction
     {
         public Guid ActionId { get; } = new Guid("6ebf91af-8240-4a75-9729-c6a1eb60dcba");
@@ -54,6 +52,9 @@ namespace MassiveKnob.Plugin.CoreAudio.GetVolume
 
                 deviceChanged?.Dispose();
                 deviceChanged = playbackDevice?.VolumeChanged.Subscribe(VolumeChanged);
+                
+                if (playbackDevice != null)
+                    actionContext.SetAnalogOutput((byte)playbackDevice.Volume);
             }
 
 

Windows/MassiveKnob.Plugin.CoreAudio/GetVolume/DeviceGetVolumeActionSettingsView.xaml.cs

@@ -1,6 +1,4 @@
-using MassiveKnob.Plugin.CoreAudio.SetMuted;
+namespace MassiveKnob.Plugin.CoreAudio.GetVolume
-
-namespace MassiveKnob.Plugin.CoreAudio.GetVolume
 {
     /// <summary>
     /// Interaction logic for DeviceGetVolumeActionSettingsView.xaml

Windows/MassiveKnob.Plugin.CoreAudio/OSD/OSDWindowViewModel.cs

@@ -1,6 +1,5 @@
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
-using System.Security.RightsManagement;
 using System.Windows;
 using AudioSwitcher.AudioApi;
 

Windows/MassiveKnob.Plugin.CoreAudio/OSD/SpeakerIcon.xaml

@@ -14,34 +14,35 @@
          x:Key="SpeakerIcon"
          d:DataContext="{d:DesignInstance osd:OSDWindowViewModel}">
         <Canvas Width="256" Height="256">
-            <Polygon Visibility="{Binding IsNotMutedVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Points="   133.5,215.101 61.75,168 8.75,168 8.75,88 61.75,88 133.5,40.899  " Name="Speaker_1_" FillRule="NonZero" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round"/>
+            <Polygon Visibility="{Binding IsNotMutedVisibility}"
-            <Path Visibility="{Binding VolumeLowVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="Low" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
+                     Points="   133.5,215.101 61.75,168 8.75,168 8.75,88 61.75,88 133.5,40.899  " Name="Speaker_1_" FillRule="NonZero" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round"/>
+            <Path Visibility="{Binding VolumeLowVisibility}" Name="Low" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
                 <Path.Data>
                     <PathGeometry Figures="   M166.806 86c0 0 12.528 15.833 12.528 40.167s-12.528 43.823-12.528 43.823" FillRule="NonZero"/>
                 </Path.Data>
             </Path>
-            <Path Visibility="{Binding VolumeMediumVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="Medium" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
+            <Path Visibility="{Binding VolumeMediumVisibility}" Name="Medium" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
                 <Path.Data>
                     <PathGeometry Figures="   M188.479 57c0 0 21.183 26.769 21.183 67.91c0 41.141-21.183 74.089-21.183 74.089" FillRule="NonZero"/>
                 </Path.Data>
             </Path>
-            <Path Visibility="{Binding VolumeHighVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="High" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
+            <Path Visibility="{Binding VolumeHighVisibility}" Name="High" StrokeThickness="12" Stroke="#FFFFFFFF" StrokeMiterLimit="10" StrokeLineJoin="Round" StrokeStartLineCap="Round" StrokeEndLineCap="Round">
                 <Path.Data>
                     <PathGeometry Figures="   M216.737 35.517c0 0 27.944 35.316 27.944 89.593s-27.944 97.75-27.944 97.75" FillRule="NonZero"/>
                 </Path.Data>
             </Path>
 
-            <Path Visibility="{Binding IsMutedVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="path4561" Fill="#FFFFFFFF">
+            <Path Visibility="{Binding IsMutedVisibility}" Name="path4561" Fill="#FFFFFFFF">
                 <Path.Data>
                     <PathGeometry Figures="M160.503 221.101c-1.717 0-3.421-0.732-4.608-2.153L10.395 44.746c-2.125-2.543-1.785-6.327 0.759-8.451   c2.544-2.125 6.328-1.784 8.451 0.759l145.5 174.201c2.124 2.544 1.784 6.327-0.759 8.452   C163.224 220.644 161.859 221.101 160.503 221.101z" FillRule="NonZero"/>
                 </Path.Data>
             </Path>
-            <Path Visibility="{Binding IsMutedVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="path4563" Fill="#FFFFFFFF">
+            <Path Visibility="{Binding IsMutedVisibility}" Name="path4563" Fill="#FFFFFFFF">
                 <Path.Data>
                     <PathGeometry Figures="M127.5 203.984l-62.458-41C64.064 162.342 62.92 162 61.75 162h-47V94h28.967L33.694 82H8.75c-3.313 0-6 2.687-6 6v80   c0 3.313 2.687 6 6 6h51.207l70.25 46.116c0.997 0.654 2.144 0.984 3.293 0.984c0.979 0 1.958-0.238 2.85-0.72   c1.94-1.048 3.15-3.075 3.15-5.28v-6.423l-12-14.367V203.984z" FillRule="NonZero"/>
                 </Path.Data>
             </Path>
-            <Path Visibility="{Binding IsMutedVisibility}" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="path4565" Fill="#FFFFFFFF">
+            <Path Visibility="{Binding IsMutedVisibility}" Name="path4565" Fill="#FFFFFFFF">
                 <Path.Data>
                     <PathGeometry Figures="M127.5 52.016v104.856l12 14.367V40.899c0-2.205-1.21-4.232-3.15-5.28c-1.939-1.047-4.299-0.947-6.143 0.264L63.19 79.877   l7.744 9.271L127.5 52.016z" FillRule="NonZero"/>
                 </Path.Data>

Windows/MassiveKnob.Plugin.CoreAudio/SetVolume/DeviceSetVolumeActionSettings.cs

@@ -4,6 +4,5 @@ namespace MassiveKnob.Plugin.CoreAudio.SetVolume
 {
     public class DeviceSetVolumeActionSettings : BaseDeviceSettings
     {
-        // TODO OSD
     }
 }

Windows/MassiveKnob.Plugin.EmulatorDevice/Devices/EmulatorDeviceWindowViewModel.cs

@@ -1,5 +1,4 @@
-using System;
+using System.Collections.Generic;
-using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
 using System.Runtime.CompilerServices;

Windows/MassiveKnob.Plugin.SerialDevice/Settings/SerialDeviceSettingsViewModel.cs

@@ -73,7 +73,7 @@ namespace MassiveKnob.Plugin.SerialDevice.Settings
 
             serialPorts = SerialPort.GetPortNames();
             
-            // TODO subscribe to device notification to refresh list
+            // TODO (must have - port from old source) subscribe to device notification to refresh list
         }
 
 

Windows/MassiveKnob.Plugin/IMassiveKnobActionInstance.cs

@@ -12,6 +12,10 @@ namespace MassiveKnob.Plugin
         /// <summary>
         /// Called right after this instance is created.
         /// </summary>
+        /// <remarks>
+        /// Do not perform anything but basic initialization until this method is called, as the action
+        /// instance will be created temporarily at startup to verify it is correctly implemented!
+        /// </remarks>
         /// <param name="context">Provides an interface to the Massive Knob settings and device. Can be stored until the action instance is disposed.</param>
         void Initialize(IMassiveKnobActionContext context);
 

Windows/MassiveKnob.Plugin/IMassiveKnobPlugin.cs

@@ -1,5 +1,7 @@
 using System;
 
+// ReSharper disable UnusedMember.Global - public API
+
 namespace MassiveKnob.Plugin
 {
     /// <summary>

Windows/MassiveKnob.sln.DotSettings

@@ -1,5 +1,6 @@
 <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=EOF/@EntryIndexedValue">EOF</s:String>
+	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=MIN/@EntryIndexedValue">MIN</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=OSD/@EntryIndexedValue">OSD</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=SOF/@EntryIndexedValue">SOF</s:String>
 	<s:String x:Key="/Default/CodeStyle/Naming/CSharpNaming/Abbreviations/=UI/@EntryIndexedValue">UI</s:String>

Windows/MassiveKnob/Model/MassiveKnobOrchestrator.cs

@@ -5,7 +5,6 @@ using System.Reactive.Subjects;
 using MassiveKnob.Helpers;
 using MassiveKnob.Plugin;
 using MassiveKnob.Settings;
-using Microsoft.Extensions.Logging;
 using Newtonsoft.Json.Linq;
 using Serilog.Extensions.Logging;
 using ILogger = Serilog.ILogger;
@@ -30,6 +29,9 @@ namespace MassiveKnob.Model
         private readonly List<ActionMapping> analogOutputs = new List<ActionMapping>();
         private readonly List<ActionMapping> digitalOutputs = new List<ActionMapping>();
 
+        private readonly Dictionary<int, byte> analogOutputValues = new Dictionary<int, byte>();
+        private readonly Dictionary<int, bool> digitalOutputValues = new Dictionary<int, bool>();
+
 
         public MassiveKnobDeviceInfo ActiveDevice
         {
@@ -58,17 +60,22 @@ namespace MassiveKnob.Model
         {
             activeDevice?.Instance?.Dispose();
 
-            void DisposeMappings(IEnumerable<ActionMapping> mappings)
+            void DisposeMappings(ICollection<ActionMapping> mappings)
             {
                 foreach (var mapping in mappings)
                     mapping?.ActionInfo.Instance?.Dispose();
+
+                mappings.Clear();
             }
 
 
+            lock (settingsLock)
+            {
                 DisposeMappings(analogInputs);
                 DisposeMappings(digitalInputs);
                 DisposeMappings(analogOutputs);
                 DisposeMappings(digitalOutputs);
+            }
 
             activeDeviceInfoSubject?.Dispose();
         }
@@ -100,15 +107,22 @@ namespace MassiveKnob.Model
 
         
         public MassiveKnobActionInfo GetAction(MassiveKnobActionType actionType, int index)
+        {
+            lock (settingsLock)
             {
                 var list = GetActionMappingList(actionType);
                 return index >= list.Count ? null : list[index]?.ActionInfo;
             }
+        }
 
         
         public MassiveKnobActionInfo SetAction(MassiveKnobActionType actionType, int index, IMassiveKnobAction action)
         {
-            var list = GetActionMappingList(actionType);
+            List<ActionMapping> list;
+            
+            lock (settingsLock)
+            {
+                list = GetActionMappingList(actionType);
                 if (index >= list.Count)
                     return null;
 
@@ -117,8 +131,6 @@ namespace MassiveKnob.Model
                 
                 list[index]?.ActionInfo.Instance?.Dispose();
 
-            lock (settingsLock)
-            {
                 var settingsList = GetActionSettingsList(actionType);
                 while (index >= settingsList.Count)
                     settingsList.Add(null);
@@ -139,7 +151,11 @@ namespace MassiveKnob.Model
                 initializeAfterRegistration = () => actionInstance.Initialize(actionContext);
             });
 
+            lock (settingsLock)
+            {
                 list[index] = mapping;
+            }
+            
             initializeAfterRegistration?.Invoke();
 
             return mapping?.ActionInfo;
@@ -224,6 +240,8 @@ namespace MassiveKnob.Model
 
 
         protected T GetActionSettings<T>(IMassiveKnobActionContext context, IMassiveKnobAction action, int index) where T : class, new()
+        {
+            lock (settingsLock)
             {
                 var list = GetActionMappingList(action.ActionType);
                 if (index >= list.Count)
@@ -232,8 +250,6 @@ namespace MassiveKnob.Model
                 if (list[index]?.Context != context)
                     throw new InvalidOperationException("Caller must be the active action to retrieve the settings");
 
-            lock (settingsLock)
-            {
                 var settingsList = GetActionSettingsList(action.ActionType);
                 if (index >= settingsList.Count)
                     return new T();
@@ -244,6 +260,8 @@ namespace MassiveKnob.Model
 
 
         protected void SetActionSettings<T>(IMassiveKnobActionContext context, IMassiveKnobAction action, int index, T actionSettings) where T : class, new()
+        {
+            lock (settingsLock)
             {
                 var list = GetActionMappingList(action.ActionType);
                 if (index >= list.Count)
@@ -252,8 +270,6 @@ namespace MassiveKnob.Model
                 if (list[index]?.Context != context)
                     throw new InvalidOperationException("Caller must be the active action to retrieve the settings");
 
-            lock (settingsLock)
-            {
                 var settingsList = GetActionSettingsList(action.ActionType);
                 
                 while (index >= settingsList.Count)
@@ -272,19 +288,29 @@ namespace MassiveKnob.Model
         }
 
 
-        // TODO store output values for when the device connects and should receive initial values
-
         protected void AnalogChanged(IMassiveKnobDeviceContext context, int analogInputIndex, byte value)
         {
             if (context != activeDeviceContext)
                 return;
 
+            IMassiveKnobAnalogAction analogAction;
+            
+            lock (settingsLock)
+            {
+                if (analogOutputValues.TryGetValue(analogInputIndex, out var currentValue) && currentValue == value)
+                    return;
+
+                analogOutputValues[analogInputIndex] = value;
+
                 var mapping = GetActionMappingList(MassiveKnobActionType.InputAnalog);
                 if (mapping == null || analogInputIndex >= mapping.Count || mapping[analogInputIndex] == null)
                     return;
 
-            if (mapping[analogInputIndex].ActionInfo.Instance is IMassiveKnobAnalogAction analogAction)
+
-                analogAction.AnalogChanged(value);
+                analogAction = mapping[analogInputIndex].ActionInfo.Instance as IMassiveKnobAnalogAction;
+            }
+
+            analogAction?.AnalogChanged(value);
         }
 
 
@@ -293,44 +319,70 @@ namespace MassiveKnob.Model
             if (context != activeDeviceContext)
                 return;
 
+            IMassiveKnobDigitalAction digitalAction;
+
+            lock (settingsLock)
+            {
+                if (digitalOutputValues.TryGetValue(digitalInputIndex, out var currentValue) && currentValue == on)
+                    return;
+
+                digitalOutputValues[digitalInputIndex] = on;
+
+                
                 var mapping = GetActionMappingList(MassiveKnobActionType.InputDigital);
                 if (mapping == null || digitalInputIndex >= mapping.Count || mapping[digitalInputIndex] == null)
                     return;
 
-            if (mapping[digitalInputIndex].ActionInfo.Instance is IMassiveKnobDigitalAction digitalAction)
+                digitalAction = mapping[digitalInputIndex].ActionInfo.Instance as IMassiveKnobDigitalAction;
-                digitalAction.DigitalChanged(on);
+            }
+
+            digitalAction?.DigitalChanged(on);
         }
 
 
-        public void SetAnalogOutput(IMassiveKnobActionContext context, IMassiveKnobAction action, int index, byte value)
+        public void SetAnalogOutput(IMassiveKnobActionContext context, int index, byte value)
         {
             if (activeDevice == null)
                 return;
 
-            var list = GetActionMappingList(action.ActionType);
+            IMassiveKnobDeviceInstance deviceInstance;
+
+            lock (settingsLock)
+            {
+                var list = GetActionMappingList(MassiveKnobActionType.OutputAnalog);
                 if (index >= list.Count)
                     return;
 
-            if (list[index]?.Context != context)
+                if (context != null && list[index]?.Context != context)
                     return;
 
-            activeDevice.Instance.SetAnalogOutput(index, value);
+                deviceInstance = activeDevice.Instance;
+            }
+            
+            deviceInstance.SetAnalogOutput(index, value);
         }
 
 
-        public void SetDigitalOutput(IMassiveKnobActionContext context, IMassiveKnobAction action, int index, bool on)
+        public void SetDigitalOutput(IMassiveKnobActionContext context, int index, bool on)
         {
             if (activeDevice == null)
                 return;
 
-            var list = GetActionMappingList(action.ActionType);
+            IMassiveKnobDeviceInstance deviceInstance;
+
+            lock (settingsLock)
+            {
+                var list = GetActionMappingList(MassiveKnobActionType.OutputDigital);
                 if (index >= list.Count)
                     return;
 
-            if (list[index]?.Context != context)
+                if (context != null && list[index]?.Context != context)
                     return;
 
-            activeDevice.Instance.SetDigitalOutput(index, on);
+                deviceInstance = activeDevice.Instance;
+            }
+            
+            deviceInstance.SetDigitalOutput(index, on);
         }
 
 
@@ -424,6 +476,14 @@ namespace MassiveKnob.Model
                 ActiveDevice.Info,
                 ActiveDevice.Instance,
                 specs);
+
+
+            // Send out all cached values to initialize the device's outputs
+            foreach (var pair in analogOutputValues.Where(pair => pair.Key < specs.AnalogOutputCount))
+                SetAnalogOutput(null, pair.Key, pair.Value);
+
+            foreach (var pair in digitalOutputValues.Where(pair => pair.Key < specs.DigitalOutputCount))
+                SetDigitalOutput(null, pair.Key, pair.Value);
         }
 
 
@@ -520,14 +580,13 @@ namespace MassiveKnob.Model
             
             public void Connecting()
             {
-                // TODO update status ?
+                // TODO (should have) update status ?
             }
 
 
             public void Connected(DeviceSpecs specs)
             {
-                // TODO update status ?
+                // TODO (should have) update status ?
-                // TODO send out initial values for outputs
 
                 owner.UpdateActiveDeviceSpecs(this, specs);
             }
@@ -535,7 +594,7 @@ namespace MassiveKnob.Model
 
             public void Disconnected()
             {
-                // TODO update status ?
+                // TODO (should have) update status ?
             }
 
 
@@ -581,13 +640,13 @@ namespace MassiveKnob.Model
             
             public void SetAnalogOutput(byte value)
             {
-                owner.SetAnalogOutput(this, action, index, value);
+                owner.SetAnalogOutput(this, index, value);
             }
             
             
             public void SetDigitalOutput(bool on)
             {
-                owner.SetDigitalOutput(this, action, index, on);
+                owner.SetDigitalOutput(this, index, on);
             }
         }
     }

Windows/MassiveKnob/Model/PluginManager.cs

@@ -4,6 +4,8 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using MassiveKnob.Plugin;
+using Serilog;
+using Serilog.Extensions.Logging;
 
 namespace MassiveKnob.Model
 {
@@ -29,9 +31,16 @@ namespace MassiveKnob.Model
     
     public class PluginManager : IPluginManager
     {
+        private readonly ILogger logger;
         private readonly List<IMassiveKnobPlugin> plugins = new List<IMassiveKnobPlugin>();
 
 
+        public PluginManager(ILogger logger)
+        {
+            this.logger = logger;
+        }
+        
+
         public IEnumerable<IMassiveKnobDevicePlugin> GetDevicePlugins()
         {
             return plugins.Where(p => p is IMassiveKnobDevicePlugin).Cast<IMassiveKnobDevicePlugin>();
@@ -101,7 +110,7 @@ namespace MassiveKnob.Model
         }
 
 
-        private static void ValidateRegistration(string filename, IMassiveKnobPlugin plugin, RegisteredIds registeredIds)
+        private void ValidateRegistration(string filename, IMassiveKnobPlugin plugin, RegisteredIds registeredIds)
         {
             // Make sure all GUIDs are actually unique and someone has not copy/pasted a plugin without
             // modifying the values. This way we can safely make that assumption in other code.
@@ -133,13 +142,42 @@ namespace MassiveKnob.Model
                         throw new MassiveKnobPluginIdConflictException(action.ActionId, conflictingActionFilename, filename);
 
                     registeredIds.ActionById.Add(action.ActionId, filename);
-                    
+                    ValidateActionType(action);
-                    // TODO check ActionType vs. implemented interfaces
                 }
             }
         }
         
         
+        private void ValidateActionType(IMassiveKnobAction action)
+        {
+            var instance = action.Create(new SerilogLoggerProvider(logger).CreateLogger(null));
+            if (instance == null)
+                throw new NullReferenceException("Create method must not return null");
+            
+            switch (action.ActionType)
+            {
+                case MassiveKnobActionType.InputAnalog:
+                    if (!(instance is IMassiveKnobAnalogAction))
+                        throw new InvalidCastException("InputAnalog action must implement IMassiveKnobAnalogAction");
+                            
+                    break;
+                
+                case MassiveKnobActionType.InputDigital:
+                    if (!(instance is IMassiveKnobDigitalAction))
+                        throw new InvalidCastException("InputDigital action must implement IMassiveKnobDigitalAction");
+
+                    break;
+                
+                case MassiveKnobActionType.OutputAnalog:
+                case MassiveKnobActionType.OutputDigital:
+                    break;
+                
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(action.ActionType), action.ActionType, @"Unsupported action type: " + (int)action.ActionType);
+            }
+        }
+
+
         private class RegisteredIds
         {
             public readonly Dictionary<Guid, string> PluginById = new Dictionary<Guid, string>();

Windows/MassiveKnob/Program.cs

@@ -21,7 +21,7 @@ namespace MassiveKnob
         [STAThread]
         public static int Main()
         {
-            // TODO make configurable
+            // TODO (should have) make configurable
             var loggingLevelSwitch = new LoggingLevelSwitch();
             //var loggingLevelSwitch = new LoggingLevelSwitch(LogEventLevel.Verbose);
 
@@ -35,7 +35,7 @@ namespace MassiveKnob
                 .CreateLogger();
             
             
-            var pluginManager = new PluginManager();
+            var pluginManager = new PluginManager(logger);
 
             var messages = new StringBuilder();
             pluginManager.Load((exception, filename) =>

Windows/MassiveKnob/ViewModel/InputOutputViewModel.cs

@@ -10,7 +10,6 @@ namespace MassiveKnob.ViewModel
 {
     public class InputOutputViewModel : INotifyPropertyChanged
     {
-        private readonly SettingsViewModel settingsViewModel;
         private readonly IMassiveKnobOrchestrator orchestrator;
         private readonly MassiveKnobActionType actionType;
         private readonly int index;
@@ -61,7 +60,6 @@ namespace MassiveKnob.ViewModel
 
         public InputOutputViewModel(SettingsViewModel settingsViewModel, IMassiveKnobOrchestrator orchestrator, MassiveKnobActionType actionType, int index)
         {
-            this.settingsViewModel = settingsViewModel;
             this.orchestrator = orchestrator;
             this.actionType = actionType;
             this.index = index;

Windows/MassiveKnob/ViewModel/SettingsViewModel.cs

@@ -10,7 +10,7 @@ using MassiveKnob.Plugin;
 
 namespace MassiveKnob.ViewModel
 {
-    // TODO better design-time version
+    // TODO (nice to have) better design-time version
     public class SettingsViewModel : INotifyPropertyChanged
     {
         private readonly IMassiveKnobOrchestrator orchestrator;

Windows/min.NET

@@ -1 +1 @@
-Subproject commit 223cfafaf40e0e26e7660860ddfd755cb671f81b
+Subproject commit 6db7da6234713a50a2c278c00bcd710249738e5e