def sync_focus(self, *_):
        """
        Focus the focused window from the pymux arrangement.
        """
        # Pop-up displayed?
        if self.display_popup:
            self.app.layout.focus(self.layout_manager.popup_dialog)
            return

        # Confirm.
        if self.confirm_text:
            return

        # Custom prompt.
        if self.prompt_command:
            return # Focus prompt

        # Command mode.
        if self.command_mode:
            return # Focus command

        # No windows left, return. We will quit soon.
        if not self.pymux.arrangement.windows:
            return

        pane = self.pymux.arrangement.get_active_pane()
        self.app.layout.focus(pane.terminal)
Focus the focused window from the pymux arrangement.