printer: Ensure callbacks don't run out of order #96

ks_includes/printer.py

@@ -1,5 +1,11 @@
+import gi
 import logging
 
+gi.require_version("Gtk", "3.0")
+from gi.repository import  Gdk, GLib
+from ks_includes.KlippyGcodes import KlippyGcodes
+
+
 class Printer:
     state_callbacks = {
         "disconnected": None,
@@ -122,8 +128,11 @@ class Printer:
         logging.debug("Changing state from '%s' to '%s'" % (self.state, state))
         self.state = state
         if self.state_callbacks[state] != None:
-            logging.debug("Running callback for state: %s" % state)
-            self.state_callbacks[state]()
+            logging.debug("Adding callback for state: %s" % state)
+            Gdk.threads_add_idle(
+                GLib.PRIORITY_HIGH_IDLE,
+                self.state_callbacks[state]
+            )
 
     def configure_power_devices(self, data):
         self.power_devices = {}