Move logic for deciding the initially selected printer that was inside WorkspaceDialog.qml before into WorkspaceDialog.py.

A block of code is run after dialog.show() and most of the dialog assignment. This is because dialog.show() resets the _result dictionary, we want to update the values in _result afterwards.

CURA-9424

plugins/3MFReader/ThreeMFWorkspaceReader.py

@@ -600,9 +600,6 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
         self._dialog.setNumUserSettings(num_user_settings)
         self._dialog.setActiveMode(active_mode)
         self._dialog.setUpdatableMachines(updatable_machines)
-        self._dialog.setMachineName(machine_name)
-        self._dialog.setIsNetworkedMachine(existing_global_stack.hasNetworkedConnection())
-        self._dialog.setIsAbstractMachine(parseBool(existing_global_stack.getMetaDataEntry("is_abstract_machine", False)))
         self._dialog.setMachineToOverride(global_stack_id)
         self._dialog.setMaterialLabels(material_labels)
         self._dialog.setMachineType(machine_type)
@@ -612,6 +609,33 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
         self._dialog.setMissingPackagesMetadata(missing_package_metadata)
         self._dialog.show()
 
+        # Choosing the initially selected printer in MachineSelector
+        is_networked_machine = False
+        is_abstract_machine = False
+        if global_stack and isinstance(global_stack, GlobalStack):
+            # The machine included in the project file exists locally already, no need to change selected printers.
+            is_networked_machine = global_stack.hasNetworkedConnection()
+            is_abstract_machine = parseBool(existing_global_stack.getMetaDataEntry("is_abstract_machine", False))
+        elif self._dialog.updatableMachinesModel.count > 0:
+            # The machine included in the project file does not exist. There is another machine of the same type.
+            # This will always default to an abstract machine first.
+            machine = self._dialog.updatableMachinesModel.getItem(0)
+            machine_name = machine["name"]
+            is_networked_machine = machine["isNetworked"]
+            is_abstract_machine = machine["isAbstractMachine"]
+            self._dialog.setResolveStrategy("machine", "override")
+            self._dialog.setMachineToOverride(machine["id"])
+        else:
+            # The machine included in the project file does not exist. There are no other printers of the same type. Default to "Create New".
+            machine_name = i18n_catalog.i18nc("@button", "Create new")
+            self._dialog.setIsAbstractMachine(False)
+            self._dialog.setIsNetworkedMachine(False)
+            self._dialog.setResolveStrategy("machine", "new")
+
+        self._dialog.setIsNetworkedMachine(is_networked_machine)
+        self._dialog.setIsAbstractMachine(is_abstract_machine)
+        self._dialog.setMachineName(machine_name)
+
         # Block until the dialog is closed.
         self._dialog.waitForClose()
 
@@ -674,7 +698,7 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
         temp_preferences = Preferences()
         try:
             serialized = archive.open("Cura/preferences.cfg").read().decode("utf-8")
-        except KeyError:
+        except KeyError as e:
             # If there is no preferences file, it's not a workspace, so notify user of failure.
             Logger.log("w", "File %s is not a valid workspace.", file_name)
             message = Message(i18n_catalog.i18nc("@info:error Don't translate the XML tags <filename> or <message>!",

plugins/3MFReader/WorkspaceDialog.qml

@@ -129,12 +129,11 @@ UM.Dialog
                                 width: parent.width - leftPadding * 1.5
                                 onClicked:
                                 {
+                                    toggleContent()
+                                    manager.setResolveStrategy("machine", "new")
                                     machineSelector.machineName = catalog.i18nc("@button", "Create new")
                                     manager.setIsAbstractMachine(false)
                                     manager.setIsNetworkedMachine(false)
-
-                                    toggleContent()
-                                    manager.setResolveStrategy("machine", "new")
                                 }
                             }
                         ]
@@ -142,11 +141,11 @@ UM.Dialog
                         onSelectPrinter: function(machine)
                         {
                             toggleContent();
+                            machineSelector.machineName = machine.name
                             manager.setResolveStrategy("machine", "override")
                             manager.setMachineToOverride(machine.id)
                             manager.setIsAbstractMachine(machine.isAbstractMachine)
                             manager.setIsNetworkedMachine(machine.isNetworked)
-                            machineSelector.machineName = machine.name
                         }
                     }
                 }