ProfilesModel is now updated when active variant or material is changed

Contributes to CURA-2494

cura/Settings/ExtrudersModel.py

@@ -50,7 +50,7 @@ class ExtrudersModel(UM.Qt.ListModel.ListModel):
 
         self._active_extruder_stack = None
 
-        # Listen to changes.
+        #Listen to changes.
         UM.Application.getInstance().globalContainerStackChanged.connect(self._updateExtruders)
         manager = ExtruderManager.getInstance()
 

cura/Settings/ProfilesModel.py

@@ -6,6 +6,7 @@ from UM.Settings.Models.InstanceContainersModel import InstanceContainersModel
 
 from cura.QualityManager import QualityManager
 from cura.Settings.ExtruderManager import ExtruderManager
+from cura.Settings.MachineManager import MachineManager
 
 ##  QML Model for listing the current list of valid quality profiles.
 #
@@ -15,6 +16,10 @@ class ProfilesModel(InstanceContainersModel):
 
         Application.getInstance().globalContainerStackChanged.connect(self._update)
 
+        Application.getInstance().getMachineManager().activeVariantChanged.connect(self._update)
+        Application.getInstance().getMachineManager().activeStackChanged.connect(self._update)
+        Application.getInstance().getMachineManager().activeMaterialChanged.connect(self._update)
+
     ##  Fetch the list of containers to display.
     #
     #   See UM.Settings.Models.InstanceContainersModel._fetchInstanceContainers().