реализовал паттерн Стратегия, можно писать новые режимы работы

main.py

@@ -1,12 +1,15 @@
 from mvc.models import VimModel
 from mvc.views import VimView
-from mvc.controllers import EditController
+from mvc.controllers import Controller, EditStrategy
 
 def main():
     model = VimModel()
     view = VimView()
-    controller = EditController(model, view.curses_adapter)
 
+    # начальный режим - редактирование
+    strategy = EditStrategy(model, view.curses_adapter)
+    controller = Controller(strategy)
+    
     # Загрузка файла для редактирования
     file_path = "example.txt"  # Укажите путь к файлу
     model.LoadFile(file_path)

mvc/controllers.py

@@ -1,7 +1,25 @@
+from abc import ABC, abstractmethod
 from mvc.views import CursesAdapter
 from mvc.models import VimModel
 
-class EditController:
+class IStrategy(ABC):
+    def __init__(self, model: VimModel, adapter: CursesAdapter):
+        self.model = model
+        self.adapter = adapter
+
+    @abstractmethod
+    def HandleInput(self, symbolCode: int) -> bool:
+        pass
+
+class Controller:
+    def __init__(self, strategy: IStrategy):
+        self.strategy = strategy
+    def SetController(self, strategy: IStrategy):
+        self.strategy = strategy
+    def HandleInput(self, symbolCode: int):
+        return self.strategy.HandleInput(symbolCode)
+
+class EditStrategy(IStrategy):
     def __init__(self, model: VimModel, adapter: CursesAdapter):
         self.model = model
         self.adapter = adapter