From b3d15b6a39ef9c9b97da4790d81d3a20049cf50d Mon Sep 17 00:00:00 2001
From: Kah Wei <msntkw@msn.com>
Date: Sat, 1 Oct 2022 20:34:23 +0800
Subject: [PATCH] Added WIP UndoRedoStack

---
 SHADE_Managed/src/Editor/Editor.cxx         |  2 +-
 SHADE_Managed/src/Editor/UndoRedoStack .cxx | 49 +++++++++++++++++++++
 SHADE_Managed/src/Editor/UndoRedoStack.hxx  | 48 ++++++++++++++++++++
 3 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 SHADE_Managed/src/Editor/UndoRedoStack .cxx
 create mode 100644 SHADE_Managed/src/Editor/UndoRedoStack.hxx

diff --git a/SHADE_Managed/src/Editor/Editor.cxx b/SHADE_Managed/src/Editor/Editor.cxx
index 629c9e65..73d52d14 100644
--- a/SHADE_Managed/src/Editor/Editor.cxx
+++ b/SHADE_Managed/src/Editor/Editor.cxx
@@ -3,7 +3,7 @@
 \author         Tng Kah Wei, kahwei.tng, 390009620
 \par            email: kahwei.tng\@digipen.edu
 \date           Sep 27, 2022
-\brief          Contains the definition of the functions for the ScriptStore managed
+\brief          Contains the definition of the functions for the Editor managed
                 static class.
 
                 Note: This file is written in C++17/CLI.
diff --git a/SHADE_Managed/src/Editor/UndoRedoStack .cxx b/SHADE_Managed/src/Editor/UndoRedoStack .cxx
new file mode 100644
index 00000000..e3fdc2f0
--- /dev/null
+++ b/SHADE_Managed/src/Editor/UndoRedoStack .cxx	
@@ -0,0 +1,49 @@
+/************************************************************************************//*!
+\file           UndoRedoStack.cxx
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Sep 29, 2022
+\brief          Contains the definition of the functions for the UndoRedoStack managed
+                class.
+
+                Note: This file is written in C++17/CLI.
+ 
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent 
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+// Precompiled Headers
+#include "SHpch.h"
+// Primary Header
+#include "UndoRedoStack.hxx"
+// External Dependencies
+#include "Editor/SHEditorUI.h"
+// Project Headers
+
+namespace SHADE
+{
+    void UndoRedoStack::Add(Command command)
+    {
+        // Erase any other actions ahead of the current action
+        if (latestActionIndex < commandStack->Count - 1)
+        {
+            commandStack->RemoveRange(latestActionIndex + 1, commandStack->Count - latestActionIndex);
+        }
+
+        // Add the command
+        commandStack->Add(command);
+
+        // Increment latest command
+        ++latestActionIndex;
+    }
+
+    void UndoRedoStack::Undo()
+    {
+
+    }
+
+    void UndoRedoStack::Redo()
+    {
+
+    }
+}
diff --git a/SHADE_Managed/src/Editor/UndoRedoStack.hxx b/SHADE_Managed/src/Editor/UndoRedoStack.hxx
new file mode 100644
index 00000000..2db3cacb
--- /dev/null
+++ b/SHADE_Managed/src/Editor/UndoRedoStack.hxx
@@ -0,0 +1,48 @@
+/************************************************************************************//*!
+\file           UndoRedoStack.hxx
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Sep 29, 2022
+\brief          Contains the definition of the managed UndoRedoStack class.
+
+                Note: This file is written in C++17/CLI.
+ 
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent 
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+#pragma once
+
+namespace SHADE
+{
+    /// <summary>
+    /// Class that is able to store a stack of actions that can be done and redone.
+    /// </summary>
+    private ref class UndoRedoStack sealed
+    {
+      public:
+        /*-----------------------------------------------------------------------------*/
+        /* Type Definitions                                                            */
+        /*-----------------------------------------------------------------------------*/
+        value struct Command
+        {
+          public:
+            System::Action^ UndoAction;
+            System::Action^ RedoAction;
+        };
+
+        /*-----------------------------------------------------------------------------*/
+        /* Usage Functions                                                             */
+        /*-----------------------------------------------------------------------------*/
+        void Add(Command command);
+        void Undo();
+        void Redo();
+
+      private:
+        /*-----------------------------------------------------------------------------*/
+        /* Data Members                                                                */
+        /*-----------------------------------------------------------------------------*/
+        int latestActionIndex                                     = -1;
+        System::Collections::Generic::List<Command>^ commandStack = gcnew System::Collections::Generic::List<Command>();
+    };
+}