From 64510a68251ba40ce6525d02d10966bee6f6294d Mon Sep 17 00:00:00 2001
From: fieldOfView <aldo@fieldofview.com>
Date: Thu, 18 Aug 2016 08:54:13 +0200
Subject: [PATCH] Listen to extruder-stack changes for extruder_prime_pos*

CURA-1944
---
 cura/BuildVolume.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index 1280ddb562..ee084a764f 100644
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -78,6 +78,10 @@ class BuildVolume(SceneNode):
         Application.getInstance().globalContainerStackChanged.connect(self._onGlobalContainerStackChanged)
         self._onGlobalContainerStackChanged()
 
+        self._active_extruder_stack = None
+        ExtruderManager.getInstance().activeExtruderChanged.connect(self._onActiveExtruderStackChanged)
+        self._onActiveExtruderStackChanged()
+
     def setWidth(self, width):
         if width: self._width = width
 
@@ -254,6 +258,13 @@ class BuildVolume(SceneNode):
 
             self.rebuild()
 
+    def _onActiveExtruderStackChanged(self):
+        if self._active_extruder_stack:
+            self._active_extruder_stack.propertyChanged.disconnect(self._onSettingPropertyChanged)
+        self._active_extruder_stack = ExtruderManager.getInstance().getActiveExtruderStack()
+        if self._active_extruder_stack:
+            self._active_extruder_stack.propertyChanged.connect(self._onSettingPropertyChanged)
+
     def _onSettingPropertyChanged(self, setting_key, property_name):
         if property_name != "value":
             return