Move models around again

- Move machine related models to cura.Machines.Models
 - Move printer device related models to cura.PrinterOutput.Models
 - Other UI/GUI related modules in cura.UI

cura/PrinterOutput/Models/PrinterConfigurationModel.py

@@ -0,0 +1,89 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import pyqtProperty, QObject, pyqtSignal
+from typing import List
+
+MYPY = False
+if MYPY:
+    from cura.PrinterOutput.Models.ExtruderConfigurationModel import ExtruderConfigurationModel
+
+
+class PrinterConfigurationModel(QObject):
+
+    configurationChanged = pyqtSignal()
+
+    def __init__(self) -> None:
+        super().__init__()
+        self._printer_type = ""
+        self._extruder_configurations = []     # type: List[ExtruderConfigurationModel]
+        self._buildplate_configuration = ""
+
+    def setPrinterType(self, printer_type: str) -> None:
+        self._printer_type = printer_type
+
+    @pyqtProperty(str, fset = setPrinterType, notify = configurationChanged)
+    def printerType(self) -> str:
+        return self._printer_type
+
+    def setExtruderConfigurations(self, extruder_configurations: List["ExtruderConfigurationModel"]) -> None:
+        if self._extruder_configurations != extruder_configurations:
+            self._extruder_configurations = extruder_configurations
+
+            for extruder_configuration in self._extruder_configurations:
+                extruder_configuration.extruderConfigurationChanged.connect(self.configurationChanged)
+
+            self.configurationChanged.emit()
+
+    @pyqtProperty("QVariantList", fset = setExtruderConfigurations, notify = configurationChanged)
+    def extruderConfigurations(self):
+        return self._extruder_configurations
+
+    def setBuildplateConfiguration(self, buildplate_configuration: str) -> None:
+        if self._buildplate_configuration != buildplate_configuration:
+            self._buildplate_configuration = buildplate_configuration
+            self.configurationChanged.emit()
+
+    @pyqtProperty(str, fset = setBuildplateConfiguration, notify = configurationChanged)
+    def buildplateConfiguration(self) -> str:
+        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) -> bool:
+        if not self._extruder_configurations:
+            return False
+        for configuration in self._extruder_configurations:
+            if configuration is None:
+                return False
+        return self._printer_type != ""
+
+    def __str__(self):
+        message_chunks = []
+        message_chunks.append("Printer type: " + self._printer_type)
+        message_chunks.append("Extruders: [")
+        for configuration in self._extruder_configurations:
+            message_chunks.append("   " + str(configuration))
+        message_chunks.append("]")
+        if self._buildplate_configuration is not None:
+            message_chunks.append("Buildplate: " + self._buildplate_configuration)
+
+        return "\n".join(message_chunks)
+
+    def __eq__(self, other):
+        return hash(self) == hash(other)
+
+    ##  The hash function is used to compare and create unique sets. The configuration is unique if the configuration
+    #   of the extruders is unique (the order of the extruders matters), and the type and buildplate is the same.
+    def __hash__(self):
+        extruder_hash = hash(0)
+        first_extruder = None
+        for configuration in self._extruder_configurations:
+            extruder_hash ^= hash(configuration)
+            if configuration.position == 0:
+                first_extruder = configuration
+        # To ensure the correct order of the extruders, we add an "and" operation using the first extruder hash value
+        if first_extruder:
+            extruder_hash &= hash(first_extruder)
+
+        return hash(self._printer_type) ^ extruder_hash ^ hash(self._buildplate_configuration)