Fixes #3764. Makes common UI interactions consistent across built-in Views

CommunityToolkitExample/LoginView.cs

@@ -19,13 +19,13 @@ public LoginView (LoginViewModel viewModel)
                                      {
                                          ViewModel.Password = passwordInput.Text;
                                      };
-        loginButton.Accept += (_, _) =>
+        loginButton.Accepting += (_, _) =>
                               {
                                   if (!ViewModel.CanLogin) { return; }
                                   ViewModel.LoginCommand.Execute (null);
                               };
 
-        clearButton.Accept += (_, _) =>
+        clearButton.Accepting += (_, _) =>
                               {
                                   ViewModel.ClearCommand.Execute (null);
                               };

Example/Example.cs

@@ -63,7 +63,7 @@ public ExampleWindow ()
         };
 
         // When login button is clicked display a message popup
-        btnLogin.Accept += (s, e) =>
+        btnLogin.Accepting += (s, e) =>
                            {
                                if (userNameText.Text == "admin" && passwordText.Text == "password")
                                {

NativeAot/Program.cs

@@ -93,7 +93,7 @@
         };
 
         // When login button is clicked display a message popup
-        btnLogin.Accept += (s, e) =>
+        btnLogin.Accepting += (s, e) =>
         {
             if (userNameText.Text == "admin" && passwordText.Text == "password")
             {

ReactiveExample/LoginView.cs

@@ -108,7 +108,7 @@ public LoginView (LoginViewModel viewModel)
 
                 login
                     .Events ()
-                    .Accept
+                    .Accepting
                     .InvokeCommand (ViewModel, x => x.Login)
                     .DisposeWith (_disposable);
             })
@@ -120,7 +120,7 @@ public LoginView (LoginViewModel viewModel)
 
                 clear
                     .Events ()
-                    .Accept
+                    .Accepting
                     .InvokeCommand (ViewModel, x => x.ClearCommand)
                     .DisposeWith (_disposable);
             })

SelfContained/Program.cs

@@ -92,7 +92,7 @@
         };
 
         // When login button is clicked display a message popup
-        btnLogin.Accept += (s, e) =>
+        btnLogin.Accepting += (s, e) =>
                            {
                                if (userNameText.Text == "admin" && passwordText.Text == "password")
                                {

Terminal.Gui/Application/Application.Initialization.cs

@@ -1,4 +1,5 @@
 #nullable enable
+using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 
@@ -80,6 +81,16 @@ internal static void InternalInit (
         if (driver is { })
         {
             Driver = driver;
+
+            if (driver is FakeDriver)
+            {
+                // We're running unit tests. Disable loading config files other than default
+                if (Locations == ConfigLocations.All)
+                {
+                    Locations = ConfigLocations.DefaultOnly;
+                    Reset ();
+                }
+            }
         }
 
         // Start the process of configuration management.
@@ -88,7 +99,12 @@ internal static void InternalInit (
         // valid after a Driver is loaded. In this case we need just
         // `Settings` so we can determine which driver to use.
         // Don't reset, so we can inherit the theme from the previous run.
+        string previousTheme = Themes?.Theme ?? string.Empty;
         Load ();
+        if (Themes is { } && !string.IsNullOrEmpty (previousTheme) && previousTheme != "Default")
+        {
+            ThemeManager.SelectedTheme = previousTheme;
+        }
         Apply ();
 
         AddApplicationKeyBindings ();

Terminal.Gui/Application/Application.Keyboard.cs

@@ -169,7 +169,7 @@ public static bool OnKeyDown (Key keyEvent)
                                             );
         }
 
-        if (CommandImplementations.TryGetValue (command, out Func<CommandContext, bool?>? implementation))
+        if (CommandImplementations.TryGetValue (command, out View.CommandImplementation? implementation))
         {
             var context = new CommandContext (command, keyEvent, appBinding); // Create the context here
 
@@ -418,7 +418,7 @@ internal static List<KeyBinding> GetViewKeyBindings ()
     /// <summary>
     ///     Commands for Application.
     /// </summary>
-    private static Dictionary<Command, Func<CommandContext, bool?>>? CommandImplementations { get; set; }
+    private static Dictionary<Command, View.CommandImplementation>? CommandImplementations { get; set; }
 
     private static void ReplaceKey (Key oldKey, Key newKey)
     {

Terminal.Gui/Application/Application.Mouse.cs

@@ -6,6 +6,13 @@ namespace Terminal.Gui;
 
 public static partial class Application // Mouse handling
 {
+    internal static Point? _lastMousePosition;
+
+    /// <summary>
+    ///     Gets the most recent position of the mouse.
+    /// </summary>
+    public static Point? GetLastMousePosition () { return _lastMousePosition; }
+
     /// <summary>Disable or enable the mouse. The mouse is enabled by default.</summary>
     [SerializableConfigurationProperty (Scope = typeof (SettingsScope))]
     public static bool IsMouseDisabled { get; set; }
@@ -132,12 +139,18 @@ private static void OnUnGrabbedMouse (View? view)
     /// <param name="mouseEvent">The mouse event with coordinates relative to the screen.</param>
     internal static void OnMouseEvent (MouseEvent mouseEvent)
     {
+        _lastMousePosition = mouseEvent.ScreenPosition;
+
         if (IsMouseDisabled)
         {
             return;
         }
 
-        List<View?> currentViewsUnderMouse = View.GetViewsUnderMouse (mouseEvent.Position);
+        // The position of the mouse is the same as the screen position at the application level.
+        //Debug.Assert (mouseEvent.Position == mouseEvent.ScreenPosition);
+        mouseEvent.Position = mouseEvent.ScreenPosition;
+
+        List<View?> currentViewsUnderMouse = View.GetViewsUnderMouse (mouseEvent.ScreenPosition);
 
         View? deepestViewUnderMouse = currentViewsUnderMouse.LastOrDefault ();
 
@@ -159,7 +172,7 @@ internal static void OnMouseEvent (MouseEvent mouseEvent)
             return;
         }
 
-        if (GrabMouse (deepestViewUnderMouse, mouseEvent))
+        if (HandleMouseGrab (deepestViewUnderMouse, mouseEvent))
         {
             return;
         }
@@ -180,44 +193,47 @@ internal static void OnMouseEvent (MouseEvent mouseEvent)
             return;
         }
 
-        // TODO: Move this after call to RaiseMouseEnterLeaveEvents once MouseEnter/Leave don't use MouseEvent anymore.
-        MouseEvent? me;
+        // Create a view-relative mouse event to send to the view that is under the mouse.
+        MouseEvent? viewMouseEvent;
 
         if (deepestViewUnderMouse is Adornment adornment)
         {
-            Point frameLoc = adornment.ScreenToFrame (mouseEvent.Position);
+            Point frameLoc = adornment.ScreenToFrame (mouseEvent.ScreenPosition);
 
-            me = new ()
+            viewMouseEvent = new ()
             {
                 Position = frameLoc,
                 Flags = mouseEvent.Flags,
-                ScreenPosition = mouseEvent.Position,
+                ScreenPosition = mouseEvent.ScreenPosition,
                 View = deepestViewUnderMouse
             };
         }
         else if (deepestViewUnderMouse.ViewportToScreen (Rectangle.Empty with { Size = deepestViewUnderMouse.Viewport.Size }).Contains (mouseEvent.Position))
         {
-            Point viewportLocation = deepestViewUnderMouse.ScreenToViewport (mouseEvent.Position);
+            Point viewportLocation = deepestViewUnderMouse.ScreenToViewport (mouseEvent.ScreenPosition);
 
-            me = new ()
+            viewMouseEvent = new ()
             {
                 Position = viewportLocation,
                 Flags = mouseEvent.Flags,
-                ScreenPosition = mouseEvent.Position,
+                ScreenPosition = mouseEvent.ScreenPosition,
                 View = deepestViewUnderMouse
             };
         }
         else
         {
-            Debug.Fail ("This should never happen");
+            // The mouse was outside any View's Viewport.
+
+           // Debug.Fail ("This should never happen. If it does please file an Issue!!");
+
             return;
         }
 
-        RaiseMouseEnterLeaveEvents (me.ScreenPosition, currentViewsUnderMouse);
+        RaiseMouseEnterLeaveEvents (viewMouseEvent.ScreenPosition, currentViewsUnderMouse);
 
         WantContinuousButtonPressedView = deepestViewUnderMouse.WantContinuousButtonPressed ? deepestViewUnderMouse : null;
 
-        while (deepestViewUnderMouse.NewMouseEvent (me) is not true && MouseGrabView is not { })
+        while (deepestViewUnderMouse.NewMouseEvent (viewMouseEvent) is not true && MouseGrabView is not { })
         {
             if (deepestViewUnderMouse is Adornment adornmentView)
             {
@@ -233,38 +249,38 @@ internal static void OnMouseEvent (MouseEvent mouseEvent)
                 break;
             }
 
-            Point boundsPoint = deepestViewUnderMouse.ScreenToViewport (mouseEvent.Position);
+            Point boundsPoint = deepestViewUnderMouse.ScreenToViewport (mouseEvent.ScreenPosition);
 
-            me = new ()
+            viewMouseEvent = new ()
             {
                 Position = boundsPoint,
                 Flags = mouseEvent.Flags,
-                ScreenPosition = mouseEvent.Position,
+                ScreenPosition = mouseEvent.ScreenPosition,
                 View = deepestViewUnderMouse
             };
         }
     }
 
-    internal static bool GrabMouse (View? deepestViewUnderMouse, MouseEvent mouseEvent)
+    internal static bool HandleMouseGrab (View? deepestViewUnderMouse, MouseEvent mouseEvent)
     {
         if (MouseGrabView is { })
         {
-
 #if DEBUG_IDISPOSABLE
             if (MouseGrabView.WasDisposed)
             {
                 throw new ObjectDisposedException (MouseGrabView.GetType ().FullName);
             }
 #endif
+
             // If the mouse is grabbed, send the event to the view that grabbed it.
             // The coordinates are relative to the Bounds of the view that grabbed the mouse.
-            Point frameLoc = MouseGrabView.ScreenToViewport (mouseEvent.Position);
+            Point frameLoc = MouseGrabView.ScreenToViewport (mouseEvent.ScreenPosition);
 
             var viewRelativeMouseEvent = new MouseEvent
             {
                 Position = frameLoc,
                 Flags = mouseEvent.Flags,
-                ScreenPosition = mouseEvent.Position,
+                ScreenPosition = mouseEvent.ScreenPosition,
                 View = deepestViewUnderMouse ?? MouseGrabView
             };
 
@@ -297,6 +313,7 @@ internal static void RaiseMouseEnterLeaveEvents (Point screenPosition, List<View
     {
         // Tell any views that are no longer under the mouse that the mouse has left
         List<View?> viewsToLeave = _cachedViewsUnderMouse.Where (v => v is { } && !currentViewsUnderMouse.Contains (v)).ToList ();
+
         foreach (View? view in viewsToLeave)
         {
             if (view is null)
@@ -322,7 +339,8 @@ internal static void RaiseMouseEnterLeaveEvents (Point screenPosition, List<View
             }
 
             _cachedViewsUnderMouse.Add (view);
-            bool raise = false;
+            var raise = false;
+
             if (view is Adornment { Parent: { } } adornmentView)
             {
                 Point superViewLoc = adornmentView.Parent.SuperView?.ScreenToViewport (screenPosition) ?? screenPosition;

Terminal.Gui/Application/Application.cs

@@ -197,6 +197,7 @@ internal static void ResetState (bool ignoreDisposed = false)
         IsInitialized = false;
 
         // Mouse
+        _lastMousePosition = null;
         _cachedViewsUnderMouse.Clear ();
         WantContinuousButtonPressedView = null;
         MouseEvent = null;
@@ -214,8 +215,6 @@ internal static void ResetState (bool ignoreDisposed = false)
 
         AddApplicationKeyBindings ();
 
-        Colors.Reset ();
-
         // Reset synchronization context to allow the user to run async/await,
         // as the main loop has been ended, the synchronization context from
         // gui.cs does no longer process any callbacks. See #1084 for more details:

Terminal.Gui/Configuration/ConfigurationManager.cs

@@ -197,10 +197,19 @@ public static void Apply ()
 
         try
         {
-            settings = Settings?.Apply () ?? false;
-
-            themes = !string.IsNullOrEmpty (ThemeManager.SelectedTheme)
-                     && (ThemeManager.Themes? [ThemeManager.SelectedTheme]?.Apply () ?? false);
+            if (string.IsNullOrEmpty (ThemeManager.SelectedTheme))
+            {
+                // First start. Apply settings first. This ensures if a config sets Theme to something other than "Default", it gets used
+                settings = Settings?.Apply () ?? false;
+                themes = !string.IsNullOrEmpty (ThemeManager.SelectedTheme)
+                         && (ThemeManager.Themes? [ThemeManager.SelectedTheme]?.Apply () ?? false);
+            }
+            else
+            {
+                // Subsequently. Apply Themes first using whatever the SelectedTheme is
+                themes = ThemeManager.Themes? [ThemeManager.SelectedTheme]?.Apply () ?? false;
+                settings = Settings?.Apply () ?? false;
+            }
             appSettings = AppSettings?.Apply () ?? false;
         }
         catch (JsonException e)

Terminal.Gui/Configuration/ThemeManager.cs

@@ -110,7 +110,7 @@ internal static string SelectedTheme
             string oldTheme = _theme;
             _theme = value;
 
-            if (oldTheme != _theme && Settings! ["Themes"]?.PropertyValue is Dictionary<string, ThemeScope> themes && themes.ContainsKey (_theme))
+            if ((oldTheme != _theme || oldTheme != Settings! ["Theme"].PropertyValue as string) && Settings! ["Themes"]?.PropertyValue is Dictionary<string, ThemeScope> themes && themes.ContainsKey (_theme))
             {
                 Settings! ["Theme"].PropertyValue = _theme;
                 Instance.OnThemeChanged (oldTheme);

Terminal.Gui/ConsoleDrivers/WindowsDriver.cs

@@ -54,6 +54,8 @@ public WindowsConsole ()
 
     public bool WriteToConsole (Size size, ExtendedCharInfo [] charInfoBuffer, Coord bufferSize, SmallRect window, bool force16Colors)
     {
+        //Debug.WriteLine ("WriteToConsole");
+
         if (_screenBuffer == nint.Zero)
         {
             ReadFromConsoleOutput (size, bufferSize, ref window);

Terminal.Gui/FileServices/DefaultFileOperations.cs

@@ -135,14 +135,14 @@ private bool Prompt (string title, string defaultText, out string result)
         var confirm = false;
         var btnOk = new Button { IsDefault = true, Text = Strings.btnOk };
 
-        btnOk.Accept += (s, e) =>
+        btnOk.Accepting += (s, e) =>
                          {
                              confirm = true;
                              Application.RequestStop ();
                          };
         var btnCancel = new Button { Text = Strings.btnCancel };
 
-        btnCancel.Accept += (s, e) =>
+        btnCancel.Accepting += (s, e) =>
                              {
                                  confirm = false;
                                  Application.RequestStop ();