splash_screen: use moonraker for actions if connected, hide system panel if it isn't connected

use systemctl if moonraker isn't available close #615

ks_includes/defaults.conf

@@ -268,6 +268,7 @@ panel: network
 name: {{ gettext('System') }}
 icon: info
 panel: system
+enable: {{ moonraker_connected }}
 
 [menu __splashscreen settings]
 name: {{ gettext('Settings') }}

panels/menu.py

@@ -104,6 +104,10 @@ class MenuPanel(ScreenPanel):
         if enable is False:
             return False
 
+        if enable == "{{ moonraker_connected }}":
+            logging.info("moonraker is_connected %s", self._screen._ws.is_connected())
+            return self._screen._ws.is_connected()
+
         if not self.j2_data:
             self.j2_data = self._printer.get_printer_status_data()
         try:

panels/splash_screen.py

@@ -131,7 +131,21 @@ class SplashScreenPanel(ScreenPanel):
 
 
     def shutdown(self, widget):
-        os.system("sudo shutdown -P now")
+        _ = self.lang.gettext
+        if self._screen._ws.is_connected():
+            self._screen._confirm_send_action(widget,
+                                              _("Are you sure you wish to shutdown the system?"),
+                                              "machine.shutdown")
+        else:
+            logging.info("OS Shutdown")
+            os.system("systemctl poweroff")
 
     def restart_system(self, widget):
-        os.system("sudo reboot now")
+        _ = self.lang.gettext
+        if self._screen._ws.is_connected():
+            self._screen._confirm_send_action(widget,
+                                              _("Are you sure you wish to reboot the system?"),
+                                              "machine.reboot")
+        else:
+            logging.info("OS Reboot")
+            os.system("systemctl reboot")