fix: always set IsFocused to false when closing a window

Dalamud/Game/Internal/DalamudAtkTweaks.cs

@@ -76,6 +76,8 @@ namespace Dalamud.Game.Internal
 
         private IntPtr AtkUnitBaseReceiveGlobalEventDetour(AtkUnitBase* thisPtr, ushort cmd, uint a3, IntPtr a4, uint* a5)
         {
+            Log.Information("{0}: cmd#{1} a3#{2} - HasAnyFocus:{3}", Marshal.PtrToStringAnsi(new IntPtr(thisPtr->Name)), cmd, a3, WindowSystem.HasAnyWindowSystemFocus);
+
             // "Close Addon"
             if (cmd == 12 && WindowSystem.HasAnyWindowSystemFocus)
                 return IntPtr.Zero;

Dalamud/Interface/Internal/Windows/DataWindow.cs

@@ -1082,6 +1082,10 @@ namespace Dalamud.Interface.Internal.Windows
 
             ImGui.Separator();
 
+            ImGui.TextUnformatted($"WindowSystem.TimeSinceLastAnyFocus: {WindowSystem.TimeSinceLastAnyFocus.TotalMilliseconds:0}ms");
+
+            ImGui.Separator();
+
             if (ImGui.Button("Add random notification"))
             {
                 var rand = new Random();

Dalamud/Interface/Windowing/Window.cs

@@ -2,6 +2,8 @@ using System.Numerics;
 
 using Dalamud.Game.ClientState.Keys;
 using ImGuiNET;
+using Microsoft.CodeAnalysis;
+using Serilog;
 
 namespace Dalamud.Interface.Windowing
 {
@@ -109,13 +111,7 @@ namespace Dalamud.Interface.Windowing
         public bool IsOpen
         {
             get => this.internalIsOpen;
-            set
+            set => this.internalIsOpen = value;
-            {
-                this.internalIsOpen = value;
-
-                if (value == false)
-                    this.IsFocused = false;
-            }
         }
 
         /// <summary>
@@ -174,6 +170,8 @@ namespace Dalamud.Interface.Windowing
                 {
                     this.internalLastIsOpen = this.internalIsOpen;
                     this.OnClose();
+
+                    this.IsFocused = false;
                 }
 
                 return;

Dalamud/Interface/Windowing/WindowSystem.cs

@@ -11,6 +11,8 @@ namespace Dalamud.Interface.Windowing
     /// </summary>
     public class WindowSystem
     {
+        private static DateTimeOffset lastAnyFocus;
+
         private readonly List<Window> windows = new();
 
         /// <summary>
@@ -28,6 +30,11 @@ namespace Dalamud.Interface.Windowing
         /// </summary>
         public static bool HasAnyWindowSystemFocus { get; internal set; }
 
+        /// <summary>
+        /// Gets the timespan since the last time any window was focused.
+        /// </summary>
+        public static TimeSpan TimeSinceLastAnyFocus => DateTimeOffset.Now - lastAnyFocus;
+
         /// <summary>
         /// Gets a value indicating whether any window in this <see cref="WindowSystem"/> has focus and is
         /// not marked to be excluded from consideration.
@@ -90,7 +97,10 @@ namespace Dalamud.Interface.Windowing
             this.HasAnyFocus = this.windows.Any(x => x.IsFocused && x.RespectCloseHotkey);
 
             if (this.HasAnyFocus)
+            {
                 HasAnyWindowSystemFocus = true;
+                lastAnyFocus = DateTimeOffset.Now;
+            }
 
             if (hasNamespace)
                 ImGui.PopID();