text: from prompt_toolkit.key_binding.key_processor import KeyPressEvent
  
  __all__ = [
      "focus_next",
      "focus_previous",
  ]
  
  E = KeyPressEvent
  
  
  def focus_next(event: E) -> None:
      """
      Focus the next visible Window.
      (Often bound to the `Tab` key.)
      """
      event.app.layout.focus_next()
  
  
  def focus_previous(event: E) -> None:
      """
      Focus the previous visible Window.
      (Often bound to the `BackTab` key.)
      """
      event.app.layout.focus_previous()
  