Add class for detecting information about console in extensible way

Author: tznind

Terminal.Gui/ConsoleDrivers/FeatureDetection/ConsoleFeatureFinder.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Win32;
+
+namespace Terminal.Gui;
+
+/// <summary>
+/// Attempts to determine information about the terminal and what features it
+/// does/not support based on runtime operations e.g. registry etc
+/// </summary>
+internal class ConsoleFeatureFinder
+{
+    public ConsoleFeatureFinderResults GetResults ()
+    {
+        var results = new ConsoleFeatureFinderResults ();
+
+        PlatformID p = Environment.OSVersion.Platform;
+        results.IsWindows = p is PlatformID.Win32NT or PlatformID.Win32S or PlatformID.Win32Windows;
+
+        if (results.IsWindows)
+        {
+            DetectWindowsSpecificFeatures (results.Windows);
+        }
+
+        return results;
+    }
+
+    private void DetectWindowsSpecificFeatures (WindowsFeatureSet windowsFeatures)
+    {
+        windowsFeatures.ConHostLegacyMode = IsLegacyConsoleEnabled ();
+    }
+
+    bool IsLegacyConsoleEnabled ()
+    {
+        try
+        {
+            using (RegistryKey key = Registry.CurrentUser.OpenSubKey (@"Console"))
+            {
+                if (key != null)
+                {
+                    object value = key.GetValue ("ForceV2");
+                    if (value is int intValue)
+                    {
+                        return intValue == 0; // Legacy Mode enabled if ForceV2 is 0
+                    }
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Logging.Warning ("Error reading registry: " + ex.Message);
+        }
+
+        return false; // Assume new console mode if check fails
+    }
+}

Terminal.Gui/ConsoleDrivers/FeatureDetection/ConsoleFeatureFinderResults.cs

@@ -0,0 +1,16 @@
+namespace Terminal.Gui;
+
+/// <summary>
+/// Results of console feature detection
+/// </summary>
+internal class ConsoleFeatureFinderResults
+{
+    public WindowsFeatureSet Windows { get; set; } = new WindowsFeatureSet();
+    public bool IsWindows { get; set; }
+
+    /// <inheritdoc />
+    public override string ToString ()
+    {
+        return $"{nameof(IsWindows)}:{IsWindows} {nameof(Windows)}:{Windows}";
+    }
+}

Terminal.Gui/ConsoleDrivers/FeatureDetection/WindowsFeatureSet.cs

@@ -0,0 +1,15 @@
+using static Unix.Terminal.Curses;
+
+namespace Terminal.Gui;
+
+/// <summary>
+/// Features specific to the windows operating system
+/// </summary>
+internal class WindowsFeatureSet
+{
+
+    public bool ConHostLegacyMode { get; set; }
+
+
+    public override string ToString () { return $"{nameof(ConHostLegacyMode)}:{ConHostLegacyMode}"; }
+}

Terminal.Gui/ConsoleDrivers/V2/ApplicationV2.cs

@@ -85,11 +85,15 @@ public override void Init (IConsoleDriver? driver = null, string? driverName = n
 
     private void CreateDriver (string? driverName)
     {
-        PlatformID p = Environment.OSVersion.Platform;
 
         bool definetlyWin = driverName?.Contains ("win") ?? false;
         bool definetlyNet = driverName?.Contains ("net") ?? false;
 
+        var finder = new ConsoleFeatureFinder ();
+        var result = finder.GetResults ();
+
+        Logging.Logger.LogInformation ($"Feature detection results:{ result}");
+
         if (definetlyWin)
         {
             _coordinator = CreateWindowsSubcomponents ();
@@ -98,7 +102,7 @@ private void CreateDriver (string? driverName)
         {
             _coordinator = CreateNetSubcomponents ();
         }
-        else if (p == PlatformID.Win32NT || p == PlatformID.Win32S || p == PlatformID.Win32Windows)
+        else if (result.IsWindows)
         {
             _coordinator = CreateWindowsSubcomponents ();
         }