комманда <S>, очищающая текущую строку и начинающая режим ввода с данной строки

main.py

@@ -27,6 +27,8 @@ def main():
                 controller.SetStrategy(NormalStrategy(model, view.curses_adapter))
             case ReturnCode.SET_COMMAND_MODE:
                 controller.SetStrategy(CommandStrategy(model, view.curses_adapter))
+            case ReturnCode.SET_EDIT_MODE:
+                controller.SetStrategy(EditStrategy(model, view.curses_adapter))
             case ReturnCode.EXIT_CODE:
                 break
 

mvc/controllers.py

@@ -62,6 +62,7 @@ class EditStrategy(Strategy):
     def HandleInput(self, symbolCode) -> int:
         """Обработка ввода пользователя"""
         match symbolCode:
+            case self.adapter.KEY_ESCAPE: return ReturnCode.SET_BASIC_MODE
             case self.adapter.KEY_LEFT: self.model.MoveLeft()
             case self.adapter.KEY_RIGHT: self.model.MoveRight()
             case self.adapter.KEY_UP: self.model.MoveUp()

mvc/models.py

@@ -5,6 +5,7 @@ class ReturnCode(Enum):
     EXIT_CODE = -100
     SET_BASIC_MODE = -99
     SET_COMMAND_MODE = -98
+    SET_EDIT_MODE = -97
 
 class VimModel:
     def __init__(self):
@@ -51,6 +52,10 @@ class VimModel:
                 return ReturnCode.GOOD
             case "q":
                 return ReturnCode.EXIT_CODE
+            case "S":
+                self.currentCol = 0
+                self.displayBuffer[self.currentLine] = []
+                return ReturnCode.SET_EDIT_MODE
 
     def Enter(self) -> None:
         # Разделяем текущую строку на две части