From 5879138e93b840db1e29e6dd5f7adec4b8ee34fd Mon Sep 17 00:00:00 2001
From: scawful <justin.scofield@outlook.com>
Date: Sun, 25 Aug 2024 00:12:04 -0400
Subject: [PATCH] Refactor CommandManager to support undo and redo
 functionality

---
 src/app/editor/system/command_manager.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/app/editor/system/command_manager.h b/src/app/editor/system/command_manager.h
index 4a36397b..c1dcb046 100644
--- a/src/app/editor/system/command_manager.h
+++ b/src/app/editor/system/command_manager.h
@@ -26,7 +26,25 @@ class CommandManager {
     }
   }
 
+  void Undo() {
+    if (!undo_stack_.empty()) {
+      undo_stack_.top()->Execute();
+      redo_stack_.push(undo_stack_.top());
+      undo_stack_.pop();
+    }
+  }
+
+  void Redo() {
+    if (!redo_stack_.empty()) {
+      redo_stack_.top()->Execute();
+      undo_stack_.push(redo_stack_.top());
+      redo_stack_.pop();
+    }
+  }
+
  private:
+  std::stack<Command*> undo_stack_;
+  std::stack<Command*> redo_stack_;
   std::unordered_map<std::string, Command*> commands_;
 };