CURA-4870 Wait until the configuration has all the mandatory data before

add it to the list of unique configurations.
Remove some connections to signals and reuse already defined listeners.

cura/PrinterOutput/ConfigurationModel.py

@@ -40,6 +40,16 @@ class ConfigurationModel(QObject):
     def buildplateConfiguration(self):
         return self._buildplate_configuration
 
+    ##  This method is intended to indicate whether the configuration is valid or not.
+    #   The method checks if the mandatory fields are or not set
+    def isValid(self):
+        if not self._extruder_configurations:
+            return False
+        for configuration in self._extruder_configurations:
+            if configuration is None:
+                return False
+        return self._printer_type is not None
+
     def __str__(self):
         message_chunks = []
         message_chunks.append("Printer type: " + self._printer_type)

cura/PrinterOutput/ExtruderConfigurationModel.py

@@ -35,8 +35,13 @@ class ExtruderConfigurationModel(QObject):
     def hotendID(self):
         return self._hotend_id
 
+    ##  This method is intended to indicate whether the configuration is valid or not.
+    #   The method checks if the mandatory fields are or not set
+    def isValid(self):
+        return self._material is not None and self._hotend_id is not None and self.material.guid is not None
+
     def __str__(self):
-        if self._material is None or self._hotend_id is None or self.material.type is None:
+        if not self.isValid():
             return "No information"
         return "Position: " + str(self._position) + " - Material: " + self._material.type + " - HotendID: " + self._hotend_id
 

cura/PrinterOutput/ExtruderOutputModel.py

@@ -28,9 +28,7 @@ class ExtruderOutputModel(QObject):
         self._hotend_id = ""
         self._active_material = None  # type: Optional[MaterialOutputModel]
         self._extruder_configuration = ExtruderConfigurationModel()
-        # Update the configuration every time the hotend or the active material change
-        self.hotendIDChanged.connect(self._updateExtruderConfiguration)
-        self.activeMaterialChanged.connect(self._updateExtruderConfiguration)
+        self._extruder_configuration.position = self._position
 
     @pyqtProperty(QObject, notify = activeMaterialChanged)
     def activeMaterial(self) -> "MaterialOutputModel":
@@ -39,7 +37,9 @@ class ExtruderOutputModel(QObject):
     def updateActiveMaterial(self, material: Optional["MaterialOutputModel"]):
         if self._active_material != material:
             self._active_material = material
+            self._extruder_configuration.material = self._active_material
             self.activeMaterialChanged.emit()
+            self.extruderConfigurationChanged.emit()
 
     ##  Update the hotend temperature. This only changes it locally.
     def updateHotendTemperature(self, temperature: float):
@@ -73,14 +73,12 @@ class ExtruderOutputModel(QObject):
     def updateHotendID(self, id: str):
         if self._hotend_id != id:
             self._hotend_id = id
+            self._extruder_configuration.hotendID = self._hotend_id
             self.hotendIDChanged.emit()
+            self.extruderConfigurationChanged.emit()
 
     @pyqtProperty(QObject, notify = extruderConfigurationChanged)
     def extruderConfiguration(self):
+        if self._extruder_configuration.isValid():
             return self._extruder_configuration
-
-    def _updateExtruderConfiguration(self):
-        self._extruder_configuration.position = self._position
-        self._extruder_configuration.material = self._active_material
-        self._extruder_configuration.hotendID = self._hotend_id
-        self.extruderConfigurationChanged.emit()
+        return None

cura/PrinterOutput/PrinterOutputModel.py

@@ -45,9 +45,7 @@ class PrinterOutputModel(QObject):
         self._buildplate_name = None
         # Update the printer configuration every time any of the extruders changes its configuration
         for extruder in self._extruders:
-            extruder.extruderConfigurationChanged.connect(self._updatePrinterConfiguration)
-        self.printerTypeChanged.connect(self._updatePrinterConfiguration)
-        self.buildplateChanged.connect(self._updatePrinterConfiguration)
+            extruder.extruderConfigurationChanged.connect(self._updateExtruderConfiguration)
 
         self._camera = None
 
@@ -80,16 +78,20 @@ class PrinterOutputModel(QObject):
     def updateType(self, printer_type):
         if self._printer_type != printer_type:
             self._printer_type = printer_type
+            self._printer_configuration.printerType = self._printer_type
             self.printerTypeChanged.emit()
+            self.configurationChanged.emit()
 
     @pyqtProperty(str, notify = buildplateChanged)
     def buildplate(self):
         return self._buildplate_name
 
-    def updateBuildplate(self, buildplate_name):
+    def updateBuildplateName(self, buildplate_name):
         if self._buildplate_name != buildplate_name:
             self._buildplate_name = buildplate_name
+            self._printer_configuration.buildplateConfiguration = self._buildplate_name
             self.buildplateChanged.emit()
+            self.configurationChanged.emit()
 
     @pyqtProperty(str, notify=keyChanged)
     def key(self):
@@ -260,10 +262,10 @@ class PrinterOutputModel(QObject):
     # Returns the configuration (material, variant and buildplate) of the current printer
     @pyqtProperty(QObject, notify = configurationChanged)
     def printerConfiguration(self):
+        if self._printer_configuration.isValid():
             return self._printer_configuration
+        return None
 
-    def _updatePrinterConfiguration(self):
-        self._printer_configuration.printerType = self._printer_type
+    def _updateExtruderConfiguration(self):
         self._printer_configuration.extruderConfigurations = [extruder.extruderConfiguration for extruder in self._extruders]
-        self._printer_configuration.buildplateConfiguration = self._buildplate_name
         self.configurationChanged.emit()

cura/PrinterOutputDevice.py

@@ -187,7 +187,7 @@ class PrinterOutputDevice(QObject, OutputDevice):
         return self._unique_configurations
 
     def _updateUniqueConfigurations(self):
-        self._unique_configurations = list(set([printer.printerConfiguration for printer in self._printers]))
+        self._unique_configurations = list(set([printer.printerConfiguration for printer in self._printers if printer.printerConfiguration is not None]))
         self._unique_configurations.sort(key = lambda k: k.printerType)
         self.uniqueConfigurationsChanged.emit()
 

plugins/UM3NetworkPrinting/ClusterUM3OutputDevice.py

@@ -384,7 +384,7 @@ class ClusterUM3OutputDevice(NetworkedPrinterOutputDevice):
 
         # Do not store the buildplate information that comes from connect if the current printer has not buildplate information
         if "build_plate" in data and machine_definition.getMetaDataEntry("has_variant_buildplates", False):
-            printer.updateBuildplate(data["build_plate"]["type"])
+            printer.updateBuildplateName(data["build_plate"]["type"])
         if not data["enabled"]:
             printer.updateState("disabled")
         else: