Remembering last emu and rom used

Author: xafero

RetroBox.Fabric/Boxes/Envelope.cs

@@ -12,6 +12,9 @@ public class Envelope
 
         public string? Preview { get; set; }
 
+        public string? IdEmu { get; set; }
+        public string? IdRom { get; set; }
+
         public void Save()
         {
             Serials.WriteJsonFile(this, InternalFile!);

RetroBox.Manager/Boxes/MetaMachine.cs

@@ -155,6 +155,17 @@ public string DescriptionTxt
             }
         }
 
+        public (string emuId, string romId) LastEmuUsed
+        {
+            set
+            {
+                if (E is not { } envelope) return;
+                envelope.IdEmu = value.emuId;
+                envelope.IdRom = value.romId;
+                envelope.Save();
+            }
+        }
+
         #endregion
 
         public string? Tag { get; set; }

RetroBox.Manager/Views/MainWindow.axaml.cs

@@ -90,7 +90,7 @@ private void OnPreviewDragDrop(object? sender, DragEventArgs e)
 
         private void OnPreviewDragDrop(string fileName)
         {
-            if (Model.CurrentMachine is not { } machine) 
+            if (Model.CurrentMachine is not { } machine)
                 return;
             var machineDir = machine.GetFolder()!;
             const string previewName = "preview.png";
@@ -134,6 +134,7 @@ private void Machines_OnSelectionChanged(object? sender, SelectionChangedEventAr
             if (added == null)
                 return;
             Model.CurrentMachine = (MetaMachine?)added;
+            RestoreLastEmu();
         }
 
         private MainWindowViewModel Model => (MainWindowViewModel)DataContext!;
@@ -298,6 +299,7 @@ private void StartThis_OnClick(object? sender, RoutedEventArgs e)
                 var proc = plat.GetProcs();
                 var core = proc.Build(arg);
                 mach.Tag = id;
+                RememberLastEmu(current);
                 core.RunThis(id, StartThis_OnEvent);
             }
         }
@@ -494,5 +496,26 @@ private void HardStop_OnClick(object? sender, RoutedEventArgs e)
             IVmCommand vCmd = new ForceOffVCmd();
             proc.Send(mach.Tag!, vCmd);
         }
+
+        private void RememberLastEmu((MetaMachine mach, FoundExe exe, FoundRom rom) current)
+        {
+            var exeVer = current.exe.Version.ReleaseId!;
+            var romVer = current.rom.ReleaseId;
+            current.mach.LastEmuUsed = (emuId: exeVer, romId: romVer);
+        }
+
+        private void RestoreLastEmu()
+        {
+            if (GetEmuAndRom() is not { } current)
+                return;
+            if (current.mach.E is not { IdEmu: { } emuId, IdRom: { } romId })
+                return;
+            var foundExe = Model.AllEmus.FirstOrDefault(m => m.Version.ReleaseId == emuId);
+            var foundRom = Model.AllRoms.FirstOrDefault(m => m.ReleaseId == romId);
+            if (foundExe == null || foundRom == null)
+                return;
+            EmuCombo.SelectedItem = foundExe;
+            RomCombo.SelectedItem = foundRom;
+        }
     }
 }