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/Machines/Models/BaseMaterialsModel.py

@@ -0,0 +1,152 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from typing import Optional, Dict, Set
+
+from PyQt5.QtCore import Qt, pyqtSignal, pyqtProperty
+from UM.Qt.ListModel import ListModel
+
+
+## This is the base model class for GenericMaterialsModel and MaterialBrandsModel.
+#  Those 2 models are used by the material drop down menu to show generic materials and branded materials separately.
+#  The extruder position defined here is being used to bound a menu to the correct extruder. This is used in the top
+#  bar menu "Settings" -> "Extruder nr" -> "Material" -> this menu
+from cura.Machines.MaterialNode import MaterialNode
+
+
+class BaseMaterialsModel(ListModel):
+
+    extruderPositionChanged = pyqtSignal()
+    enabledChanged = pyqtSignal()
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+        from cura.CuraApplication import CuraApplication
+
+        self._application = CuraApplication.getInstance()
+
+        # Make these managers available to all material models
+        self._container_registry = self._application.getInstance().getContainerRegistry()
+        self._machine_manager = self._application.getMachineManager()
+        self._material_manager = self._application.getMaterialManager()
+
+        # Update the stack and the model data when the machine changes
+        self._machine_manager.globalContainerChanged.connect(self._updateExtruderStack)
+
+        # Update this model when switching machines
+        self._machine_manager.activeStackChanged.connect(self._update)
+        
+        # Update this model when list of materials changes
+        self._material_manager.materialsUpdated.connect(self._update)
+
+        self.addRoleName(Qt.UserRole + 1, "root_material_id")
+        self.addRoleName(Qt.UserRole + 2, "id")
+        self.addRoleName(Qt.UserRole + 3, "GUID")
+        self.addRoleName(Qt.UserRole + 4, "name")
+        self.addRoleName(Qt.UserRole + 5, "brand")
+        self.addRoleName(Qt.UserRole + 6, "description")
+        self.addRoleName(Qt.UserRole + 7, "material")
+        self.addRoleName(Qt.UserRole + 8, "color_name")
+        self.addRoleName(Qt.UserRole + 9, "color_code")
+        self.addRoleName(Qt.UserRole + 10, "density")
+        self.addRoleName(Qt.UserRole + 11, "diameter")
+        self.addRoleName(Qt.UserRole + 12, "approximate_diameter")
+        self.addRoleName(Qt.UserRole + 13, "adhesion_info")
+        self.addRoleName(Qt.UserRole + 14, "is_read_only")
+        self.addRoleName(Qt.UserRole + 15, "container_node")
+        self.addRoleName(Qt.UserRole + 16, "is_favorite")
+
+        self._extruder_position = 0
+        self._extruder_stack = None
+
+        self._available_materials = None  # type: Optional[Dict[str, MaterialNode]]
+        self._favorite_ids = set()  # type: Set[str]
+        self._enabled = True
+
+    def _updateExtruderStack(self):
+        global_stack = self._machine_manager.activeMachine
+        if global_stack is None:
+            return
+
+        if self._extruder_stack is not None:
+            self._extruder_stack.pyqtContainersChanged.disconnect(self._update)
+            self._extruder_stack.approximateMaterialDiameterChanged.disconnect(self._update)
+        self._extruder_stack = global_stack.extruders.get(str(self._extruder_position))
+        if self._extruder_stack is not None:
+            self._extruder_stack.pyqtContainersChanged.connect(self._update)
+            self._extruder_stack.approximateMaterialDiameterChanged.connect(self._update)
+        # Force update the model when the extruder stack changes
+        self._update()
+
+    def setExtruderPosition(self, position: int):
+        if self._extruder_stack is None or self._extruder_position != position:
+            self._extruder_position = position
+            self._updateExtruderStack()
+            self.extruderPositionChanged.emit()
+
+    @pyqtProperty(int, fset = setExtruderPosition, notify = extruderPositionChanged)
+    def extruderPosition(self) -> int:
+        return self._extruder_position
+
+    def setEnabled(self, enabled):
+        if self._enabled != enabled:
+            self._enabled = enabled
+            if self._enabled:
+                # ensure the data is there again.
+                self._update()
+            self.enabledChanged.emit()
+
+    @pyqtProperty(bool, fset=setEnabled, notify=enabledChanged)
+    def enabled(self):
+        return self._enabled
+
+    ## This is an abstract method that needs to be implemented by the specific
+    #  models themselves.
+    def _update(self):
+        pass
+
+    ## This method is used by all material models in the beginning of the
+    #  _update() method in order to prevent errors. It's the same in all models
+    #  so it's placed here for easy access.
+    def _canUpdate(self):
+        global_stack = self._machine_manager.activeMachine
+
+        if global_stack is None or not self._enabled:
+            return False
+
+        extruder_position = str(self._extruder_position)
+
+        if extruder_position not in global_stack.extruders:
+            return False
+        
+        extruder_stack = global_stack.extruders[extruder_position]
+        self._available_materials = self._material_manager.getAvailableMaterialsForMachineExtruder(global_stack, extruder_stack)
+        if self._available_materials is None:
+            return False
+
+        return True
+
+    ## This is another convenience function which is shared by all material
+    #  models so it's put here to avoid having so much duplicated code.
+    def _createMaterialItem(self, root_material_id, container_node):
+        metadata = container_node.getMetadata()
+        item = {
+            "root_material_id":     root_material_id,
+            "id":                   metadata["id"],
+            "container_id":         metadata["id"], # TODO: Remove duplicate in material manager qml
+            "GUID":                 metadata["GUID"],
+            "name":                 metadata["name"],
+            "brand":                metadata["brand"],
+            "description":          metadata["description"],
+            "material":             metadata["material"],
+            "color_name":           metadata["color_name"],
+            "color_code":           metadata.get("color_code", ""),
+            "density":              metadata.get("properties", {}).get("density", ""),
+            "diameter":             metadata.get("properties", {}).get("diameter", ""),
+            "approximate_diameter": metadata["approximate_diameter"],
+            "adhesion_info":        metadata["adhesion_info"],
+            "is_read_only":         self._container_registry.isReadOnly(metadata["id"]),
+            "container_node":       container_node,
+            "is_favorite":          root_material_id in self._favorite_ids
+        }
+        return item
+

cura/Machines/Models/BuildPlateModel.py

@@ -0,0 +1,51 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt
+
+from UM.Application import Application
+from UM.Logger import Logger
+from UM.Qt.ListModel import ListModel
+from UM.Util import parseBool
+
+from cura.Machines.VariantType import VariantType
+
+
+class BuildPlateModel(ListModel):
+    NameRole = Qt.UserRole + 1
+    ContainerNodeRole = Qt.UserRole + 2
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.ContainerNodeRole, "container_node")
+
+        self._application = Application.getInstance()
+        self._variant_manager = self._application._variant_manager
+        self._machine_manager = self._application.getMachineManager()
+
+        self._machine_manager.globalContainerChanged.connect(self._update)
+
+        self._update()
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+        global_stack = self._machine_manager._global_container_stack
+        if not global_stack:
+            self.setItems([])
+            return
+
+        has_variants = parseBool(global_stack.getMetaDataEntry("has_variant_buildplates", False))
+        if not has_variants:
+            self.setItems([])
+            return
+
+        variant_dict = self._variant_manager.getVariantNodes(global_stack, variant_type = VariantType.BUILD_PLATE)
+
+        item_list = []
+        for name, variant_node in variant_dict.items():
+            item = {"name": name,
+                    "container_node": variant_node}
+            item_list.append(item)
+        self.setItems(item_list)

cura/Machines/Models/CustomQualityProfilesDropDownMenuModel.py

@@ -0,0 +1,37 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from UM.Logger import Logger
+
+from cura.Machines.Models.QualityProfilesDropDownMenuModel import QualityProfilesDropDownMenuModel
+
+
+#
+# This model is used for the custom profile items in the profile drop down menu.
+#
+class CustomQualityProfilesDropDownMenuModel(QualityProfilesDropDownMenuModel):
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+
+        active_global_stack = self._machine_manager.activeMachine
+        if active_global_stack is None:
+            self.setItems([])
+            Logger.log("d", "No active GlobalStack, set %s as empty.", self.__class__.__name__)
+            return
+
+        quality_changes_group_dict = self._quality_manager.getQualityChangesGroups(active_global_stack)
+
+        item_list = []
+        for key in sorted(quality_changes_group_dict, key = lambda name: name.upper()):
+            quality_changes_group = quality_changes_group_dict[key]
+
+            item = {"name": quality_changes_group.name,
+                    "layer_height": "",
+                    "layer_height_without_unit": "",
+                    "available": quality_changes_group.is_available,
+                    "quality_changes_group": quality_changes_group}
+
+            item_list.append(item)
+
+        self.setItems(item_list)

cura/Machines/Models/DiscoveredPrintersModel.py

@@ -0,0 +1,140 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from typing import Callable, Dict, List, Optional, TYPE_CHECKING
+
+from PyQt5.QtCore import pyqtSlot, pyqtProperty, pyqtSignal, QObject
+
+from UM.i18n import i18nCatalog
+from UM.Logger import Logger
+
+if TYPE_CHECKING:
+    from PyQt5.QtCore import QObject
+
+    from cura.PrinterOutput.NetworkedPrinterOutputDevice import NetworkedPrinterOutputDevice
+
+
+catalog = i18nCatalog("cura")
+
+
+class DiscoveredPrinter(QObject):
+
+    def __init__(self, ip_address: str, key: str, name: str, create_callback: Callable[[str], None], machine_type: str,
+                 device: "NetworkedPrinterOutputDevice", parent: Optional["QObject"] = None) -> None:
+        super().__init__(parent)
+
+        self._ip_address = ip_address
+        self._key = key
+        self._name = name
+        self.create_callback = create_callback
+        self._machine_type = machine_type
+        self._device = device
+
+    nameChanged = pyqtSignal()
+
+    def getKey(self) -> str:
+        return self._key
+
+    @pyqtProperty(str, notify = nameChanged)
+    def name(self) -> str:
+        return self._name
+
+    def setName(self, name: str) -> None:
+        if self._name != name:
+            self._name = name
+            self.nameChanged.emit()
+
+    machineTypeChanged = pyqtSignal()
+
+    @pyqtProperty(str, notify = machineTypeChanged)
+    def machine_type(self) -> str:
+        return self._machine_type
+
+    def setMachineType(self, machine_type: str) -> None:
+        if self._machine_type != machine_type:
+            self._machine_type = machine_type
+            self.machineTypeChanged.emit()
+
+    # Human readable machine type string
+    @pyqtProperty(str, notify = machineTypeChanged)
+    def readable_machine_type(self) -> str:
+        from cura.CuraApplication import CuraApplication
+        readable_type = CuraApplication.getInstance().getMachineManager().getMachineTypeNameFromId(self._machine_type)
+        if not readable_type:
+            readable_type = catalog.i18nc("@label", "Unknown")
+        return readable_type
+
+    @pyqtProperty(bool, notify = machineTypeChanged)
+    def is_unknown_machine_type(self) -> bool:
+        return self.readable_machine_type.lower() == "unknown"
+
+    @pyqtProperty(QObject, constant = True)
+    def device(self) -> "NetworkedPrinterOutputDevice":
+        return self._device
+
+
+#
+# Discovered printers are all the printers that were found on the network, which provide a more convenient way
+# to add networked printers (Plugin finds a bunch of printers, user can select one from the list, plugin can then
+# add that printer to Cura as the active one).
+#
+class DiscoveredPrintersModel(QObject):
+
+    def __init__(self, parent: Optional["QObject"] = None) -> None:
+        super().__init__(parent)
+
+        self._discovered_printer_by_ip_dict = dict()  # type: Dict[str, DiscoveredPrinter]
+
+    discoveredPrintersChanged = pyqtSignal()
+
+    @pyqtProperty(list, notify = discoveredPrintersChanged)
+    def discovered_printers(self) -> List["DiscoveredPrinter"]:
+        item_list = list(x for x in self._discovered_printer_by_ip_dict.values())
+        item_list.sort(key = lambda x: x.name)
+        return item_list
+
+    def addDiscoveredPrinter(self, ip_address: str, key: str, name: str, create_callback: Callable[[str], None],
+                             machine_type: str, device: "NetworkedPrinterOutputDevice") -> None:
+        if ip_address in self._discovered_printer_by_ip_dict:
+            Logger.log("e", "Printer with ip [%s] has already been added", ip_address)
+            return
+
+        discovered_printer = DiscoveredPrinter(ip_address, key, name, create_callback, machine_type, device, parent = self)
+        self._discovered_printer_by_ip_dict[ip_address] = discovered_printer
+        self.discoveredPrintersChanged.emit()
+
+    def updateDiscoveredPrinter(self, ip_address: str,
+                                name: Optional[str] = None,
+                                machine_type: Optional[str] = None) -> None:
+        if ip_address not in self._discovered_printer_by_ip_dict:
+            Logger.log("e", "Printer with ip [%s] is not known", ip_address)
+            return
+
+        item = self._discovered_printer_by_ip_dict[ip_address]
+
+        if name is not None:
+            item.setName(name)
+        if machine_type is not None:
+            item.setMachineType(machine_type)
+
+    def removeDiscoveredPrinter(self, ip_address: str) -> None:
+        if ip_address not in self._discovered_printer_by_ip_dict:
+            Logger.log("i", "Key [%s] does not exist in the discovered printers list.", ip_address)
+            return
+
+        del self._discovered_printer_by_ip_dict[ip_address]
+        self.discoveredPrintersChanged.emit()
+
+    # A convenience function for QML to create a machine (GlobalStack) out of the given discovered printer.
+    # This function invokes the given discovered printer's "create_callback" to do this.
+    @pyqtSlot("QVariant")
+    def createMachineFromDiscoveredPrinter(self, discovered_printer: "DiscoveredPrinter") -> None:
+        discovered_printer.create_callback(discovered_printer.getKey())
+
+    @pyqtSlot(str)
+    def createMachineFromDiscoveredPrinterAddress(self, ip_address: str) -> None:
+        if ip_address not in self._discovered_printer_by_ip_dict:
+            Logger.log("i", "Key [%s] does not exist in the discovered printers list.", ip_address)
+            return
+
+        self.createMachineFromDiscoveredPrinter(self._discovered_printer_by_ip_dict[ip_address])

cura/Machines/Models/ExtrudersModel.py

@@ -0,0 +1,222 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt, pyqtSignal, pyqtProperty, QTimer
+from typing import Iterable, TYPE_CHECKING
+
+from UM.i18n import i18nCatalog
+from UM.Qt.ListModel import ListModel
+from UM.Application import Application
+import UM.FlameProfiler
+
+if TYPE_CHECKING:
+    from cura.Settings.ExtruderStack import ExtruderStack  # To listen to changes on the extruders.
+
+catalog = i18nCatalog("cura")
+
+
+##  Model that holds extruders.
+#
+#   This model is designed for use by any list of extruders, but specifically
+#   intended for drop-down lists of the current machine's extruders in place of
+#   settings.
+class ExtrudersModel(ListModel):
+    # The ID of the container stack for the extruder.
+    IdRole = Qt.UserRole + 1
+
+    ##  Human-readable name of the extruder.
+    NameRole = Qt.UserRole + 2
+
+    ##  Colour of the material loaded in the extruder.
+    ColorRole = Qt.UserRole + 3
+
+    ##  Index of the extruder, which is also the value of the setting itself.
+    #
+    #   An index of 0 indicates the first extruder, an index of 1 the second
+    #   one, and so on. This is the value that will be saved in instance
+    #   containers.
+    IndexRole = Qt.UserRole + 4
+
+    # The ID of the definition of the extruder.
+    DefinitionRole = Qt.UserRole + 5
+
+    # The material of the extruder.
+    MaterialRole = Qt.UserRole + 6
+
+    # The variant of the extruder.
+    VariantRole = Qt.UserRole + 7
+    StackRole = Qt.UserRole + 8
+
+    MaterialBrandRole = Qt.UserRole + 9
+    ColorNameRole = Qt.UserRole + 10
+
+    ##  Is the extruder enabled?
+    EnabledRole = Qt.UserRole + 11
+
+    ##  List of colours to display if there is no material or the material has no known
+    #   colour.
+    defaultColors = ["#ffc924", "#86ec21", "#22eeee", "#245bff", "#9124ff", "#ff24c8"]
+
+    ##  Initialises the extruders model, defining the roles and listening for
+    #   changes in the data.
+    #
+    #   \param parent Parent QtObject of this list.
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(self.IdRole, "id")
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.EnabledRole, "enabled")
+        self.addRoleName(self.ColorRole, "color")
+        self.addRoleName(self.IndexRole, "index")
+        self.addRoleName(self.DefinitionRole, "definition")
+        self.addRoleName(self.MaterialRole, "material")
+        self.addRoleName(self.VariantRole, "variant")
+        self.addRoleName(self.StackRole, "stack")
+        self.addRoleName(self.MaterialBrandRole, "material_brand")
+        self.addRoleName(self.ColorNameRole, "color_name")
+        self._update_extruder_timer = QTimer()
+        self._update_extruder_timer.setInterval(100)
+        self._update_extruder_timer.setSingleShot(True)
+        self._update_extruder_timer.timeout.connect(self.__updateExtruders)
+
+        self._active_machine_extruders = []  # type: Iterable[ExtruderStack]
+        self._add_optional_extruder = False
+
+        # Listen to changes
+        Application.getInstance().globalContainerStackChanged.connect(self._extrudersChanged)  # When the machine is swapped we must update the active machine extruders
+        Application.getInstance().getExtruderManager().extrudersChanged.connect(self._extrudersChanged)  # When the extruders change we must link to the stack-changed signal of the new extruder
+        Application.getInstance().getContainerRegistry().containerMetaDataChanged.connect(self._onExtruderStackContainersChanged)  # When meta data from a material container changes we must update
+        self._extrudersChanged()  # Also calls _updateExtruders
+
+    addOptionalExtruderChanged = pyqtSignal()
+
+    def setAddOptionalExtruder(self, add_optional_extruder):
+        if add_optional_extruder != self._add_optional_extruder:
+            self._add_optional_extruder = add_optional_extruder
+            self.addOptionalExtruderChanged.emit()
+            self._updateExtruders()
+
+    @pyqtProperty(bool, fset = setAddOptionalExtruder, notify = addOptionalExtruderChanged)
+    def addOptionalExtruder(self):
+        return self._add_optional_extruder
+
+    ##  Links to the stack-changed signal of the new extruders when an extruder
+    #   is swapped out or added in the current machine.
+    #
+    #   \param machine_id The machine for which the extruders changed. This is
+    #   filled by the ExtruderManager.extrudersChanged signal when coming from
+    #   that signal. Application.globalContainerStackChanged doesn't fill this
+    #   signal; it's assumed to be the current printer in that case.
+    def _extrudersChanged(self, machine_id = None):
+        machine_manager = Application.getInstance().getMachineManager()
+        if machine_id is not None:
+            if machine_manager.activeMachine is None:
+                # No machine, don't need to update the current machine's extruders
+                return
+            if machine_id != machine_manager.activeMachine.getId():
+                # Not the current machine
+                return
+
+        # Unlink from old extruders
+        for extruder in self._active_machine_extruders:
+            extruder.containersChanged.disconnect(self._onExtruderStackContainersChanged)
+            extruder.enabledChanged.disconnect(self._updateExtruders)
+
+        # Link to new extruders
+        self._active_machine_extruders = []
+        extruder_manager = Application.getInstance().getExtruderManager()
+        for extruder in extruder_manager.getActiveExtruderStacks():
+            if extruder is None: #This extruder wasn't loaded yet. This happens asynchronously while this model is constructed from QML.
+                continue
+            extruder.containersChanged.connect(self._onExtruderStackContainersChanged)
+            extruder.enabledChanged.connect(self._updateExtruders)
+            self._active_machine_extruders.append(extruder)
+
+        self._updateExtruders()  # Since the new extruders may have different properties, update our own model.
+
+    def _onExtruderStackContainersChanged(self, container):
+        # Update when there is an empty container or material or variant change
+        if container.getMetaDataEntry("type") in ["material", "variant", None]:
+            # The ExtrudersModel needs to be updated when the material-name or -color changes, because the user identifies extruders by material-name
+            self._updateExtruders()
+
+    modelChanged = pyqtSignal()
+
+    def _updateExtruders(self):
+        self._update_extruder_timer.start()
+
+    ##  Update the list of extruders.
+    #
+    #   This should be called whenever the list of extruders changes.
+    @UM.FlameProfiler.profile
+    def __updateExtruders(self):
+        extruders_changed = False
+
+        if self.count != 0:
+            extruders_changed = True
+
+        items = []
+
+        global_container_stack = Application.getInstance().getGlobalContainerStack()
+        if global_container_stack:
+
+            # get machine extruder count for verification
+            machine_extruder_count = global_container_stack.getProperty("machine_extruder_count", "value")
+
+            for extruder in Application.getInstance().getExtruderManager().getActiveExtruderStacks():
+                position = extruder.getMetaDataEntry("position", default = "0")
+                try:
+                    position = int(position)
+                except ValueError:
+                    # Not a proper int.
+                    position = -1
+                if position >= machine_extruder_count:
+                    continue
+
+                default_color = self.defaultColors[position] if 0 <= position < len(self.defaultColors) else self.defaultColors[0]
+                color = extruder.material.getMetaDataEntry("color_code", default = default_color) if extruder.material else default_color
+                material_brand = extruder.material.getMetaDataEntry("brand", default = "generic")
+                color_name = extruder.material.getMetaDataEntry("color_name")
+                # construct an item with only the relevant information
+                item = {
+                    "id": extruder.getId(),
+                    "name": extruder.getName(),
+                    "enabled": extruder.isEnabled,
+                    "color": color,
+                    "index": position,
+                    "definition": extruder.getBottom().getId(),
+                    "material": extruder.material.getName() if extruder.material else "",
+                    "variant": extruder.variant.getName() if extruder.variant else "",  # e.g. print core
+                    "stack": extruder,
+                    "material_brand": material_brand,
+                    "color_name": color_name
+                }
+
+                items.append(item)
+                extruders_changed = True
+
+        if extruders_changed:
+            # sort by extruder index
+            items.sort(key = lambda i: i["index"])
+
+            # We need optional extruder to be last, so add it after we do sorting.
+            # This way we can simply interpret the -1 of the index as the last item (which it now always is)
+            if self._add_optional_extruder:
+                item = {
+                    "id": "",
+                    "name": catalog.i18nc("@menuitem", "Not overridden"),
+                    "enabled": True,
+                    "color": "#ffffff",
+                    "index": -1,
+                    "definition": "",
+                    "material": "",
+                    "variant": "",
+                    "stack": None,
+                    "material_brand": "",
+                    "color_name": "",
+                }
+                items.append(item)
+            if self._items != items:
+                self.setItems(items)
+                self.modelChanged.emit()

cura/Machines/Models/FavoriteMaterialsModel.py

@@ -0,0 +1,38 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from cura.Machines.Models.BaseMaterialsModel import BaseMaterialsModel
+
+##  Model that shows the list of favorite materials.
+class FavoriteMaterialsModel(BaseMaterialsModel):
+    def __init__(self, parent = None):
+        super().__init__(parent)
+        self._update()
+
+    def _update(self):
+        if not self._canUpdate():
+            return
+
+        # Get updated list of favorites
+        self._favorite_ids = self._material_manager.getFavorites()
+
+        item_list = []
+
+        for root_material_id, container_node in self._available_materials.items():
+            metadata = container_node.getMetadata()
+
+            # Do not include the materials from a to-be-removed package
+            if bool(metadata.get("removed", False)):
+                continue
+
+            # Only add results for favorite materials
+            if root_material_id not in self._favorite_ids:
+                continue
+
+            item = self._createMaterialItem(root_material_id, container_node)
+            item_list.append(item)
+
+        # Sort the item list alphabetically by name
+        item_list = sorted(item_list, key = lambda d: d["brand"].upper())
+
+        self.setItems(item_list)

cura/Machines/Models/GenericMaterialsModel.py

@@ -0,0 +1,38 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from cura.Machines.Models.BaseMaterialsModel import BaseMaterialsModel
+
+class GenericMaterialsModel(BaseMaterialsModel):
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+        self._update()
+
+    def _update(self):
+        if not self._canUpdate():
+            return
+
+        # Get updated list of favorites
+        self._favorite_ids = self._material_manager.getFavorites()
+
+        item_list = []
+
+        for root_material_id, container_node in self._available_materials.items():
+            metadata = container_node.getMetadata()
+
+            # Do not include the materials from a to-be-removed package
+            if bool(metadata.get("removed", False)):
+                continue
+
+            # Only add results for generic materials
+            if metadata["brand"].lower() != "generic":
+                continue
+
+            item = self._createMaterialItem(root_material_id, container_node)
+            item_list.append(item)
+
+        # Sort the item list alphabetically by name
+        item_list = sorted(item_list, key = lambda d: d["name"].upper())
+
+        self.setItems(item_list)

cura/Machines/Models/GlobalStacksModel.py

@@ -0,0 +1,77 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt, QTimer
+
+from UM.Qt.ListModel import ListModel
+from UM.i18n import i18nCatalog
+
+from cura.PrinterOutput.PrinterOutputDevice import ConnectionType
+from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
+from cura.Settings.GlobalStack import GlobalStack
+
+
+class GlobalStacksModel(ListModel):
+    NameRole = Qt.UserRole + 1
+    IdRole = Qt.UserRole + 2
+    HasRemoteConnectionRole = Qt.UserRole + 3
+    ConnectionTypeRole = Qt.UserRole + 4
+    MetaDataRole = Qt.UserRole + 5
+    DiscoverySourceRole = Qt.UserRole + 6  # For separating local and remote printers in the machine management page
+
+    def __init__(self, parent = None) -> None:
+        super().__init__(parent)
+
+        self._catalog = i18nCatalog("cura")
+
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.IdRole, "id")
+        self.addRoleName(self.HasRemoteConnectionRole, "hasRemoteConnection")
+        self.addRoleName(self.MetaDataRole, "metadata")
+        self.addRoleName(self.DiscoverySourceRole, "discoverySource")
+
+        self._change_timer = QTimer()
+        self._change_timer.setInterval(200)
+        self._change_timer.setSingleShot(True)
+        self._change_timer.timeout.connect(self._update)
+
+        # Listen to changes
+        CuraContainerRegistry.getInstance().containerAdded.connect(self._onContainerChanged)
+        CuraContainerRegistry.getInstance().containerMetaDataChanged.connect(self._onContainerChanged)
+        CuraContainerRegistry.getInstance().containerRemoved.connect(self._onContainerChanged)
+        self._updateDelayed()
+
+    ##  Handler for container added/removed events from registry
+    def _onContainerChanged(self, container) -> None:
+        # We only need to update when the added / removed container GlobalStack
+        if isinstance(container, GlobalStack):
+            self._updateDelayed()
+
+    def _updateDelayed(self) -> None:
+        self._change_timer.start()
+
+    def _update(self) -> None:
+        items = []
+
+        container_stacks = CuraContainerRegistry.getInstance().findContainerStacks(type = "machine")
+
+        for container_stack in container_stacks:
+            has_remote_connection = False
+
+            for connection_type in container_stack.configuredConnectionTypes:
+                has_remote_connection |= connection_type in [ConnectionType.NetworkConnection.value,
+                                                             ConnectionType.CloudConnection.value]
+
+            if container_stack.getMetaDataEntry("hidden", False) in ["True", True]:
+                continue
+
+            section_name = "Network enabled printers" if has_remote_connection else "Local printers"
+            section_name = self._catalog.i18nc("@info:title", section_name)
+
+            items.append({"name": container_stack.getMetaDataEntry("group_name", container_stack.getName()),
+                          "id": container_stack.getId(),
+                          "hasRemoteConnection": has_remote_connection,
+                          "metadata": container_stack.getMetaData().copy(),
+                          "discoverySource": section_name})
+        items.sort(key = lambda i: not i["hasRemoteConnection"])
+        self.setItems(items)

cura/Machines/Models/MachineManagementModel.py

@@ -0,0 +1,82 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from UM.Qt.ListModel import ListModel
+
+from PyQt5.QtCore import Qt
+
+from UM.Settings.ContainerRegistry import ContainerRegistry
+from UM.Settings.ContainerStack import ContainerStack
+
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
+
+#
+# This the QML model for the quality management page.
+#
+class MachineManagementModel(ListModel):
+    NameRole = Qt.UserRole + 1
+    IdRole = Qt.UserRole + 2
+    MetaDataRole = Qt.UserRole + 3
+    GroupRole = Qt.UserRole + 4
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.IdRole, "id")
+        self.addRoleName(self.MetaDataRole, "metadata")
+        self.addRoleName(self.GroupRole, "group")
+        self._local_container_stacks = []
+        self._network_container_stacks = []
+
+        # Listen to changes
+        ContainerRegistry.getInstance().containerAdded.connect(self._onContainerChanged)
+        ContainerRegistry.getInstance().containerMetaDataChanged.connect(self._onContainerChanged)
+        ContainerRegistry.getInstance().containerRemoved.connect(self._onContainerChanged)
+        self._filter_dict = {}
+        self._update()
+
+    ##  Handler for container added/removed events from registry
+    def _onContainerChanged(self, container):
+        # We only need to update when the added / removed container is a stack.
+        if isinstance(container, ContainerStack) and container.getMetaDataEntry("type") == "machine":
+            self._update()
+
+    ##  Private convenience function to reset & repopulate the model.
+    def _update(self):
+        items = []
+
+        # Get first the network enabled printers
+        network_filter_printers = {"type": "machine",
+                                   "um_network_key": "*",
+                                   "hidden": "False"}
+        self._network_container_stacks = ContainerRegistry.getInstance().findContainerStacks(**network_filter_printers)
+        self._network_container_stacks.sort(key = lambda i: i.getMetaDataEntry("group_name", ""))
+
+        for container in self._network_container_stacks:
+            metadata = container.getMetaData().copy()
+            if container.getBottom():
+                metadata["definition_name"] = container.getBottom().getName()
+
+            items.append({"name": metadata.get("group_name", ""),
+                          "id": container.getId(),
+                          "metadata": metadata,
+                          "group": catalog.i18nc("@info:title", "Network enabled printers")})
+
+        # Get now the local printers
+        local_filter_printers = {"type": "machine", "um_network_key": None}
+        self._local_container_stacks = ContainerRegistry.getInstance().findContainerStacks(**local_filter_printers)
+        self._local_container_stacks.sort(key = lambda i: i.getName())
+
+        for container in self._local_container_stacks:
+            metadata = container.getMetaData().copy()
+            if container.getBottom():
+                metadata["definition_name"] = container.getBottom().getName()
+
+            items.append({"name": container.getName(),
+                          "id": container.getId(),
+                          "metadata": metadata,
+                          "group": catalog.i18nc("@info:title", "Local printers")})
+
+        self.setItems(items)

cura/Machines/Models/MaterialBrandsModel.py

@@ -0,0 +1,102 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt, pyqtSignal
+from UM.Qt.ListModel import ListModel
+from cura.Machines.Models.BaseMaterialsModel import BaseMaterialsModel
+
+class MaterialTypesModel(ListModel):
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(Qt.UserRole + 1, "name")
+        self.addRoleName(Qt.UserRole + 2, "brand")
+        self.addRoleName(Qt.UserRole + 3, "colors")
+
+class MaterialBrandsModel(BaseMaterialsModel):
+
+    extruderPositionChanged = pyqtSignal()
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(Qt.UserRole + 1, "name")
+        self.addRoleName(Qt.UserRole + 2, "material_types")
+
+        self._update()
+
+    def _update(self):
+        if not self._canUpdate():
+            return
+        # Get updated list of favorites
+        self._favorite_ids = self._material_manager.getFavorites()
+
+        brand_item_list = []
+        brand_group_dict = {}
+
+        # Part 1: Generate the entire tree of brands -> material types -> spcific materials
+        for root_material_id, container_node in self._available_materials.items():
+            # Do not include the materials from a to-be-removed package
+            if bool(container_node.getMetaDataEntry("removed", False)):
+                continue
+
+            # Add brands we haven't seen yet to the dict, skipping generics
+            brand = container_node.getMetaDataEntry("brand", "")
+            if brand.lower() == "generic":
+                continue
+            if brand not in brand_group_dict:
+                brand_group_dict[brand] = {}
+
+            # Add material types we haven't seen yet to the dict
+            material_type = container_node.getMetaDataEntry("material", "")
+            if material_type not in brand_group_dict[brand]:
+                brand_group_dict[brand][material_type] = []
+
+            # Now handle the individual materials
+            item = self._createMaterialItem(root_material_id, container_node)
+            brand_group_dict[brand][material_type].append(item)
+
+        # Part 2: Organize the tree into models
+        #
+        # Normally, the structure of the menu looks like this:
+        #     Brand -> Material Type -> Specific Material
+        #
+        # To illustrate, a branded material menu may look like this:
+        #     Ultimaker ┳ PLA ┳ Yellow PLA
+        #               ┃     ┣ Black PLA
+        #               ┃     ┗ ...
+        #               ┃
+        #               ┗ ABS ┳ White ABS
+        #                     ┗ ...
+        for brand, material_dict in brand_group_dict.items():
+
+            material_type_item_list = []
+            brand_item = {
+                "name": brand,
+                "material_types": MaterialTypesModel(self)
+            }
+
+            for material_type, material_list in material_dict.items():
+                material_type_item = {
+                    "name": material_type,
+                    "brand": brand,
+                    "colors": BaseMaterialsModel(self)
+                }
+                material_type_item["colors"].clear()
+
+                # Sort materials by name
+                material_list = sorted(material_list, key = lambda x: x["name"].upper())
+                material_type_item["colors"].setItems(material_list)
+
+                material_type_item_list.append(material_type_item)
+
+            # Sort material type by name
+            material_type_item_list = sorted(material_type_item_list, key = lambda x: x["name"].upper())
+            brand_item["material_types"].setItems(material_type_item_list)
+
+            brand_item_list.append(brand_item)
+
+        # Sort brand by name
+        brand_item_list = sorted(brand_item_list, key = lambda x: x["name"].upper())
+        self.setItems(brand_item_list)

cura/Machines/Models/MultiBuildPlateModel.py

@@ -0,0 +1,69 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import QTimer, pyqtSignal, pyqtProperty
+
+from UM.Application import Application
+from UM.Scene.Camera import Camera
+from UM.Scene.Selection import Selection
+from UM.Qt.ListModel import ListModel
+
+
+#
+# This is the model for multi build plate feature.
+# This has nothing to do with the build plate types you can choose on the sidebar for a machine.
+#
+class MultiBuildPlateModel(ListModel):
+
+    maxBuildPlateChanged = pyqtSignal()
+    activeBuildPlateChanged = pyqtSignal()
+    selectionChanged = pyqtSignal()
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self._update_timer = QTimer()
+        self._update_timer.setInterval(100)
+        self._update_timer.setSingleShot(True)
+        self._update_timer.timeout.connect(self._updateSelectedObjectBuildPlateNumbers)
+
+        self._application = Application.getInstance()
+        self._application.getController().getScene().sceneChanged.connect(self._updateSelectedObjectBuildPlateNumbersDelayed)
+        Selection.selectionChanged.connect(self._updateSelectedObjectBuildPlateNumbers)
+
+        self._max_build_plate = 1  # default
+        self._active_build_plate = -1
+
+    def setMaxBuildPlate(self, max_build_plate):
+        if self._max_build_plate != max_build_plate:
+            self._max_build_plate = max_build_plate
+            self.maxBuildPlateChanged.emit()
+
+    ##  Return the highest build plate number
+    @pyqtProperty(int, notify = maxBuildPlateChanged)
+    def maxBuildPlate(self):
+        return self._max_build_plate
+
+    def setActiveBuildPlate(self, nr):
+        if self._active_build_plate != nr:
+            self._active_build_plate = nr
+            self.activeBuildPlateChanged.emit()
+
+    @pyqtProperty(int, notify = activeBuildPlateChanged)
+    def activeBuildPlate(self):
+        return self._active_build_plate
+
+    def _updateSelectedObjectBuildPlateNumbersDelayed(self, *args):
+        if not isinstance(args[0], Camera):
+            self._update_timer.start()
+
+    def _updateSelectedObjectBuildPlateNumbers(self, *args):
+        result = set()
+        for node in Selection.getAllSelectedObjects():
+            result.add(node.callDecoration("getBuildPlateNumber"))
+        self._selection_build_plates = list(result)
+        self.selectionChanged.emit()
+
+    @pyqtProperty("QVariantList", notify = selectionChanged)
+    def selectionBuildPlates(self):
+        return self._selection_build_plates

cura/Machines/Models/NozzleModel.py

@@ -0,0 +1,60 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt
+
+from UM.Application import Application
+from UM.Logger import Logger
+from UM.Qt.ListModel import ListModel
+from UM.Util import parseBool
+
+from cura.Machines.VariantType import VariantType
+
+
+class NozzleModel(ListModel):
+    IdRole = Qt.UserRole + 1
+    HotendNameRole = Qt.UserRole + 2
+    ContainerNodeRole = Qt.UserRole + 3
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(self.IdRole, "id")
+        self.addRoleName(self.HotendNameRole, "hotend_name")
+        self.addRoleName(self.ContainerNodeRole, "container_node")
+
+        self._application = Application.getInstance()
+        self._machine_manager = self._application.getMachineManager()
+        self._variant_manager = self._application.getVariantManager()
+
+        self._machine_manager.globalContainerChanged.connect(self._update)
+        self._update()
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+
+        global_stack = self._machine_manager.activeMachine
+        if global_stack is None:
+            self.setItems([])
+            return
+
+        has_variants = parseBool(global_stack.getMetaDataEntry("has_variants", False))
+        if not has_variants:
+            self.setItems([])
+            return
+
+        variant_node_dict = self._variant_manager.getVariantNodes(global_stack, VariantType.NOZZLE)
+        if not variant_node_dict:
+            self.setItems([])
+            return
+
+        item_list = []
+        for hotend_name, container_node in sorted(variant_node_dict.items(), key = lambda i: i[0].upper()):
+            item = {"id": hotend_name,
+                    "hotend_name": hotend_name,
+                    "container_node": container_node
+                    }
+
+            item_list.append(item)
+
+        self.setItems(item_list)

cura/Machines/Models/QualityManagementModel.py

@@ -0,0 +1,125 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt, pyqtSlot
+
+from UM.Qt.ListModel import ListModel
+from UM.Logger import Logger
+
+#
+# This the QML model for the quality management page.
+#
+class QualityManagementModel(ListModel):
+    NameRole = Qt.UserRole + 1
+    IsReadOnlyRole = Qt.UserRole + 2
+    QualityGroupRole = Qt.UserRole + 3
+    QualityChangesGroupRole = Qt.UserRole + 4
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.IsReadOnlyRole, "is_read_only")
+        self.addRoleName(self.QualityGroupRole, "quality_group")
+        self.addRoleName(self.QualityChangesGroupRole, "quality_changes_group")
+
+        from cura.CuraApplication import CuraApplication
+        self._container_registry = CuraApplication.getInstance().getContainerRegistry()
+        self._machine_manager = CuraApplication.getInstance().getMachineManager()
+        self._extruder_manager = CuraApplication.getInstance().getExtruderManager()
+        self._quality_manager = CuraApplication.getInstance().getQualityManager()
+
+        self._machine_manager.globalContainerChanged.connect(self._update)
+        self._quality_manager.qualitiesUpdated.connect(self._update)
+
+        self._update()
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+
+        global_stack = self._machine_manager.activeMachine
+        if not global_stack:
+            self.setItems([])
+            return
+
+        quality_group_dict = self._quality_manager.getQualityGroups(global_stack)
+        quality_changes_group_dict = self._quality_manager.getQualityChangesGroups(global_stack)
+
+        available_quality_types = set(quality_type for quality_type, quality_group in quality_group_dict.items()
+                                      if quality_group.is_available)
+        if not available_quality_types and not quality_changes_group_dict:
+            # Nothing to show
+            self.setItems([])
+            return
+
+        item_list = []
+        # Create quality group items
+        for quality_group in quality_group_dict.values():
+            if not quality_group.is_available:
+                continue
+
+            item = {"name": quality_group.name,
+                    "is_read_only": True,
+                    "quality_group": quality_group,
+                    "quality_changes_group": None}
+            item_list.append(item)
+        # Sort by quality names
+        item_list = sorted(item_list, key = lambda x: x["name"].upper())
+
+        # Create quality_changes group items
+        quality_changes_item_list = []
+        for quality_changes_group in quality_changes_group_dict.values():
+            quality_group = quality_group_dict.get(quality_changes_group.quality_type)
+            item = {"name": quality_changes_group.name,
+                    "is_read_only": False,
+                    "quality_group": quality_group,
+                    "quality_changes_group": quality_changes_group}
+            quality_changes_item_list.append(item)
+
+        # Sort quality_changes items by names and append to the item list
+        quality_changes_item_list = sorted(quality_changes_item_list, key = lambda x: x["name"].upper())
+        item_list += quality_changes_item_list
+
+        self.setItems(item_list)
+
+    # TODO: Duplicated code here from InstanceContainersModel. Refactor and remove this later.
+    #
+    ##  Gets a list of the possible file filters that the plugins have
+    #   registered they can read or write. The convenience meta-filters
+    #   "All Supported Types" and "All Files" are added when listing
+    #   readers, but not when listing writers.
+    #
+    #   \param io_type \type{str} name of the needed IO type
+    #   \return A list of strings indicating file name filters for a file
+    #   dialog.
+    @pyqtSlot(str, result = "QVariantList")
+    def getFileNameFilters(self, io_type):
+        from UM.i18n import i18nCatalog
+        catalog = i18nCatalog("uranium")
+        #TODO: This function should be in UM.Resources!
+        filters = []
+        all_types = []
+        for plugin_id, meta_data in self._getIOPlugins(io_type):
+            for io_plugin in meta_data[io_type]:
+                filters.append(io_plugin["description"] + " (*." + io_plugin["extension"] + ")")
+                all_types.append("*.{0}".format(io_plugin["extension"]))
+
+        if "_reader" in io_type:
+            # if we're listing readers, add the option to show all supported files as the default option
+            filters.insert(0, catalog.i18nc("@item:inlistbox", "All Supported Types ({0})", " ".join(all_types)))
+            filters.append(catalog.i18nc("@item:inlistbox", "All Files (*)"))  # Also allow arbitrary files, if the user so prefers.
+        return filters
+
+    ##  Gets a list of profile reader or writer plugins
+    #   \return List of tuples of (plugin_id, meta_data).
+    def _getIOPlugins(self, io_type):
+        from UM.PluginRegistry import PluginRegistry
+        pr = PluginRegistry.getInstance()
+        active_plugin_ids = pr.getActivePlugins()
+
+        result = []
+        for plugin_id in active_plugin_ids:
+            meta_data = pr.getMetaData(plugin_id)
+            if io_type in meta_data:
+                result.append( (plugin_id, meta_data) )
+        return result

cura/Machines/Models/QualityProfilesDropDownMenuModel.py

@@ -0,0 +1,125 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import Qt, QTimer
+
+from UM.Application import Application
+from UM.Logger import Logger
+from UM.Qt.ListModel import ListModel
+from UM.Settings.SettingFunction import SettingFunction
+
+from cura.Machines.QualityManager import QualityGroup
+
+
+#
+# QML Model for all built-in quality profiles. This model is used for the drop-down quality menu.
+#
+class QualityProfilesDropDownMenuModel(ListModel):
+    NameRole = Qt.UserRole + 1
+    QualityTypeRole = Qt.UserRole + 2
+    LayerHeightRole = Qt.UserRole + 3
+    LayerHeightUnitRole = Qt.UserRole + 4
+    AvailableRole = Qt.UserRole + 5
+    QualityGroupRole = Qt.UserRole + 6
+    QualityChangesGroupRole = Qt.UserRole + 7
+    IsExperimentalRole = Qt.UserRole + 8
+
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self.addRoleName(self.NameRole, "name")
+        self.addRoleName(self.QualityTypeRole, "quality_type")
+        self.addRoleName(self.LayerHeightRole, "layer_height")
+        self.addRoleName(self.LayerHeightUnitRole, "layer_height_unit")
+        self.addRoleName(self.AvailableRole, "available") #Whether the quality profile is available in our current nozzle + material.
+        self.addRoleName(self.QualityGroupRole, "quality_group")
+        self.addRoleName(self.QualityChangesGroupRole, "quality_changes_group")
+        self.addRoleName(self.IsExperimentalRole, "is_experimental")
+
+        self._application = Application.getInstance()
+        self._machine_manager = self._application.getMachineManager()
+        self._quality_manager = Application.getInstance().getQualityManager()
+
+        self._application.globalContainerStackChanged.connect(self._onChange)
+        self._machine_manager.activeQualityGroupChanged.connect(self._onChange)
+        self._machine_manager.extruderChanged.connect(self._onChange)
+        self._quality_manager.qualitiesUpdated.connect(self._onChange)
+
+        self._layer_height_unit = ""  # This is cached
+
+        self._update_timer = QTimer()  # type: QTimer
+        self._update_timer.setInterval(100)
+        self._update_timer.setSingleShot(True)
+        self._update_timer.timeout.connect(self._update)
+
+        self._onChange()
+
+    def _onChange(self) -> None:
+        self._update_timer.start()
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+
+        global_stack = self._machine_manager.activeMachine
+        if global_stack is None:
+            self.setItems([])
+            Logger.log("d", "No active GlobalStack, set quality profile model as empty.")
+            return
+
+        # Check for material compatibility
+        if not self._machine_manager.activeMaterialsCompatible():
+            Logger.log("d", "No active material compatibility, set quality profile model as empty.")
+            self.setItems([])
+            return
+
+        quality_group_dict = self._quality_manager.getQualityGroups(global_stack)
+
+        item_list = []
+        for key in sorted(quality_group_dict):
+            quality_group = quality_group_dict[key]
+
+            layer_height = self._fetchLayerHeight(quality_group)
+
+            item = {"name": quality_group.name,
+                    "quality_type": quality_group.quality_type,
+                    "layer_height": layer_height,
+                    "layer_height_unit": self._layer_height_unit,
+                    "available": quality_group.is_available,
+                    "quality_group": quality_group,
+                    "is_experimental": quality_group.is_experimental}
+
+            item_list.append(item)
+
+        # Sort items based on layer_height
+        item_list = sorted(item_list, key = lambda x: x["layer_height"])
+
+        self.setItems(item_list)
+
+    def _fetchLayerHeight(self, quality_group: "QualityGroup") -> float:
+        global_stack = self._machine_manager.activeMachine
+        if not self._layer_height_unit:
+            unit = global_stack.definition.getProperty("layer_height", "unit")
+            if not unit:
+                unit = ""
+            self._layer_height_unit = unit
+
+        default_layer_height = global_stack.definition.getProperty("layer_height", "value")
+
+        # Get layer_height from the quality profile for the GlobalStack
+        if quality_group.node_for_global is None:
+            return float(default_layer_height)
+        container = quality_group.node_for_global.getContainer()
+
+        layer_height = default_layer_height
+        if container and container.hasProperty("layer_height", "value"):
+            layer_height = container.getProperty("layer_height", "value")
+        else:
+            # Look for layer_height in the GlobalStack from material -> definition
+            container = global_stack.definition
+            if container and container.hasProperty("layer_height", "value"):
+                layer_height = container.getProperty("layer_height", "value")
+
+        if isinstance(layer_height, SettingFunction):
+            layer_height = layer_height(global_stack)
+
+        return float(layer_height)

cura/Machines/Models/QualitySettingsModel.py

@@ -0,0 +1,162 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import pyqtProperty, pyqtSignal, Qt
+
+from UM.Application import Application
+from UM.Logger import Logger
+from UM.Qt.ListModel import ListModel
+from UM.Settings.ContainerRegistry import ContainerRegistry
+
+
+#
+# This model is used to show details settings of the selected quality in the quality management page.
+#
+class QualitySettingsModel(ListModel):
+    KeyRole = Qt.UserRole + 1
+    LabelRole = Qt.UserRole + 2
+    UnitRole = Qt.UserRole + 3
+    ProfileValueRole = Qt.UserRole + 4
+    ProfileValueSourceRole = Qt.UserRole + 5
+    UserValueRole = Qt.UserRole + 6
+    CategoryRole = Qt.UserRole + 7
+
+    GLOBAL_STACK_POSITION = -1
+
+    def __init__(self, parent = None):
+        super().__init__(parent = parent)
+
+        self.addRoleName(self.KeyRole, "key")
+        self.addRoleName(self.LabelRole, "label")
+        self.addRoleName(self.UnitRole, "unit")
+        self.addRoleName(self.ProfileValueRole, "profile_value")
+        self.addRoleName(self.ProfileValueSourceRole, "profile_value_source")
+        self.addRoleName(self.UserValueRole, "user_value")
+        self.addRoleName(self.CategoryRole, "category")
+
+        self._container_registry = ContainerRegistry.getInstance()
+        self._application = Application.getInstance()
+        self._quality_manager = self._application.getQualityManager()
+
+        self._selected_position = self.GLOBAL_STACK_POSITION #Must be either GLOBAL_STACK_POSITION or an extruder position (0, 1, etc.)
+        self._selected_quality_item = None  # The selected quality in the quality management page
+        self._i18n_catalog = None
+
+        self._quality_manager.qualitiesUpdated.connect(self._update)
+
+        self._update()
+
+    selectedPositionChanged = pyqtSignal()
+    selectedQualityItemChanged = pyqtSignal()
+
+    def setSelectedPosition(self, selected_position):
+        if selected_position != self._selected_position:
+            self._selected_position = selected_position
+            self.selectedPositionChanged.emit()
+            self._update()
+
+    @pyqtProperty(int, fset = setSelectedPosition, notify = selectedPositionChanged)
+    def selectedPosition(self):
+        return self._selected_position
+
+    def setSelectedQualityItem(self, selected_quality_item):
+        if selected_quality_item != self._selected_quality_item:
+            self._selected_quality_item = selected_quality_item
+            self.selectedQualityItemChanged.emit()
+            self._update()
+
+    @pyqtProperty("QVariantMap", fset = setSelectedQualityItem, notify = selectedQualityItemChanged)
+    def selectedQualityItem(self):
+        return self._selected_quality_item
+
+    def _update(self):
+        Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
+
+        if not self._selected_quality_item:
+            self.setItems([])
+            return
+
+        items = []
+
+        global_container_stack = self._application.getGlobalContainerStack()
+        definition_container = global_container_stack.definition
+
+        quality_group = self._selected_quality_item["quality_group"]
+        quality_changes_group = self._selected_quality_item["quality_changes_group"]
+
+        quality_node = None
+        settings_keys = set()
+        if quality_group:
+            if self._selected_position == self.GLOBAL_STACK_POSITION:
+                quality_node = quality_group.node_for_global
+            else:
+                quality_node = quality_group.nodes_for_extruders.get(str(self._selected_position))
+            settings_keys = quality_group.getAllKeys()
+        quality_containers = []
+        if quality_node is not None and quality_node.getContainer() is not None:
+            quality_containers.append(quality_node.getContainer())
+
+        # Here, if the user has selected a quality changes, then "quality_changes_group" will not be None, and we fetch
+        # the settings in that quality_changes_group.
+        if quality_changes_group is not None:
+            if self._selected_position == self.GLOBAL_STACK_POSITION:
+                quality_changes_node = quality_changes_group.node_for_global
+            else:
+                quality_changes_node = quality_changes_group.nodes_for_extruders.get(str(self._selected_position))
+            if quality_changes_node is not None and quality_changes_node.getContainer() is not None:  # it can be None if number of extruders are changed during runtime
+                quality_containers.insert(0, quality_changes_node.getContainer())
+            settings_keys.update(quality_changes_group.getAllKeys())
+
+        # We iterate over all definitions instead of settings in a quality/qualtiy_changes group is because in the GUI,
+        # the settings are grouped together by categories, and we had to go over all the definitions to figure out
+        # which setting belongs in which category.
+        current_category = ""
+        for definition in definition_container.findDefinitions():
+            if definition.type == "category":
+                current_category = definition.label
+                if self._i18n_catalog:
+                    current_category = self._i18n_catalog.i18nc(definition.key + " label", definition.label)
+                continue
+
+            profile_value = None
+            profile_value_source = ""
+            for quality_container in quality_containers:
+                new_value = quality_container.getProperty(definition.key, "value")
+
+                if new_value is not None:
+                    profile_value_source = quality_container.getMetaDataEntry("type")
+                    profile_value = new_value
+
+                # Global tab should use resolve (if there is one)
+                if self._selected_position == self.GLOBAL_STACK_POSITION:
+                    resolve_value = global_container_stack.getProperty(definition.key, "resolve")
+                    if resolve_value is not None and definition.key in settings_keys:
+                        profile_value = resolve_value
+
+                if profile_value is not None:
+                    break
+
+            if self._selected_position == self.GLOBAL_STACK_POSITION:
+                user_value = global_container_stack.userChanges.getProperty(definition.key, "value")
+            else:
+                extruder_stack = global_container_stack.extruders[str(self._selected_position)]
+                user_value = extruder_stack.userChanges.getProperty(definition.key, "value")
+
+            if profile_value is None and user_value is None:
+                continue
+
+            label = definition.label
+            if self._i18n_catalog:
+                label = self._i18n_catalog.i18nc(definition.key + " label", label)
+
+            items.append({
+                "key": definition.key,
+                "label": label,
+                "unit": definition.unit,
+                "profile_value": "" if profile_value is None else str(profile_value),  # it is for display only
+                "profile_value_source": profile_value_source,
+                "user_value": "" if user_value is None else str(user_value),
+                "category": current_category
+            })
+
+        self.setItems(items)

cura/Machines/Models/SettingVisibilityPresetsModel.py

@@ -0,0 +1,168 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from typing import Optional, List
+
+from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
+
+from UM.Logger import Logger
+from UM.Preferences import Preferences
+from UM.Resources import Resources
+
+from UM.i18n import i18nCatalog
+from cura.Settings.SettingVisibilityPreset import SettingVisibilityPreset
+
+catalog = i18nCatalog("cura")
+
+
+class SettingVisibilityPresetsModel(QObject):
+    onItemsChanged = pyqtSignal()
+    activePresetChanged = pyqtSignal()
+
+    def __init__(self, preferences: Preferences, parent = None) -> None:
+        super().__init__(parent)
+
+        self._items = []  # type: List[SettingVisibilityPreset]
+        self._custom_preset = SettingVisibilityPreset(preset_id = "custom", name = "Custom selection", weight = -100)
+
+        self._populate()
+
+        basic_item = self.getVisibilityPresetById("basic")
+        if basic_item is not None:
+            basic_visibile_settings = ";".join(basic_item.settings)
+        else:
+            Logger.log("w", "Unable to find the basic visiblity preset.")
+            basic_visibile_settings = ""
+
+        self._preferences = preferences
+
+        # Preference to store which preset is currently selected
+        self._preferences.addPreference("cura/active_setting_visibility_preset", "basic")
+
+        # Preference that stores the "custom" set so it can always be restored (even after a restart)
+        self._preferences.addPreference("cura/custom_visible_settings", basic_visibile_settings)
+        self._preferences.preferenceChanged.connect(self._onPreferencesChanged)
+
+        self._active_preset_item = self.getVisibilityPresetById(self._preferences.getValue("cura/active_setting_visibility_preset"))
+
+        # Initialize visible settings if it is not done yet
+        visible_settings = self._preferences.getValue("general/visible_settings")
+
+        if not visible_settings:
+            new_visible_settings = self._active_preset_item.settings if self._active_preset_item is not None else []
+            self._preferences.setValue("general/visible_settings", ";".join(new_visible_settings))
+        else:
+            self._onPreferencesChanged("general/visible_settings")
+
+        self.activePresetChanged.emit()
+
+    def getVisibilityPresetById(self, item_id: str) -> Optional[SettingVisibilityPreset]:
+        result = None
+        for item in self._items:
+            if item.presetId == item_id:
+                result = item
+                break
+        return result
+
+    def _populate(self) -> None:
+        from cura.CuraApplication import CuraApplication
+        items = []  # type: List[SettingVisibilityPreset]
+        items.append(self._custom_preset)
+        for file_path in Resources.getAllResourcesOfType(CuraApplication.ResourceTypes.SettingVisibilityPreset):
+            setting_visibility_preset = SettingVisibilityPreset()
+            try:
+                setting_visibility_preset.loadFromFile(file_path)
+            except Exception:
+                Logger.logException("e", "Failed to load setting preset %s", file_path)
+
+            items.append(setting_visibility_preset)
+
+        # Sort them on weight (and if that fails, use ID)
+        items.sort(key = lambda k: (int(k.weight), k.presetId))
+
+        self.setItems(items)
+
+    @pyqtProperty("QVariantList", notify = onItemsChanged)
+    def items(self) -> List[SettingVisibilityPreset]:
+        return self._items
+
+    def setItems(self, items: List[SettingVisibilityPreset]) -> None:
+        if self._items != items:
+            self._items = items
+            self.onItemsChanged.emit()
+
+    @pyqtSlot(str)
+    def setActivePreset(self, preset_id: str) -> None:
+        if self._active_preset_item is not None and preset_id == self._active_preset_item.presetId:
+            Logger.log("d", "Same setting visibility preset [%s] selected, do nothing.", preset_id)
+            return
+
+        preset_item = self.getVisibilityPresetById(preset_id)
+        if preset_item is None:
+            Logger.log("w", "Tried to set active preset to unknown id [%s]", preset_id)
+            return
+
+        need_to_save_to_custom = self._active_preset_item is None or (self._active_preset_item.presetId == "custom" and preset_id != "custom")
+        if need_to_save_to_custom:
+            # Save the current visibility settings to custom
+            current_visibility_string = self._preferences.getValue("general/visible_settings")
+            if current_visibility_string:
+                self._preferences.setValue("cura/custom_visible_settings", current_visibility_string)
+
+        new_visibility_string = ";".join(preset_item.settings)
+        if preset_id == "custom":
+            # Get settings from the stored custom data
+            new_visibility_string = self._preferences.getValue("cura/custom_visible_settings")
+            if new_visibility_string is None:
+                new_visibility_string = self._preferences.getValue("general/visible_settings")
+        self._preferences.setValue("general/visible_settings", new_visibility_string)
+
+        self._preferences.setValue("cura/active_setting_visibility_preset", preset_id)
+        self._active_preset_item = preset_item
+        self.activePresetChanged.emit()
+
+    @pyqtProperty(str, notify = activePresetChanged)
+    def activePreset(self) -> str:
+        if self._active_preset_item is not None:
+            return self._active_preset_item.presetId
+        return ""
+
+    def _onPreferencesChanged(self, name: str) -> None:
+        if name != "general/visible_settings":
+            return
+
+        # Find the preset that matches with the current visible settings setup
+        visibility_string = self._preferences.getValue("general/visible_settings")
+        if not visibility_string:
+            return
+
+        visibility_set = set(visibility_string.split(";"))
+        matching_preset_item = None
+        for item in self._items:
+            if item.presetId == "custom":
+                continue
+            if set(item.settings) == visibility_set:
+                matching_preset_item = item
+                break
+
+        item_to_set = self._active_preset_item
+        if matching_preset_item is None:
+            # The new visibility setup is "custom" should be custom
+            if self._active_preset_item is None or self._active_preset_item.presetId == "custom":
+                # We are already in custom, just save the settings
+                self._preferences.setValue("cura/custom_visible_settings", visibility_string)
+            else:
+                # We need to move to custom preset.
+                item_to_set = self.getVisibilityPresetById("custom")
+        else:
+            item_to_set = matching_preset_item
+
+        # If we didn't find a matching preset, fallback to custom.
+        if item_to_set is None:
+            item_to_set = self._custom_preset
+
+        if self._active_preset_item is None or self._active_preset_item.presetId != item_to_set.presetId:
+            self._active_preset_item = item_to_set
+            if self._active_preset_item is not None:
+                self._preferences.setValue("cura/active_setting_visibility_preset", self._active_preset_item.presetId)
+            self.activePresetChanged.emit()

cura/Machines/Models/UserChangesModel.py

@@ -0,0 +1,131 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import os
+from collections import OrderedDict
+
+from PyQt5.QtCore import pyqtSlot, Qt
+
+from UM.Application import Application
+from UM.Settings.ContainerRegistry import ContainerRegistry
+from UM.i18n import i18nCatalog
+from UM.Settings.SettingFunction import SettingFunction
+from UM.Qt.ListModel import ListModel
+
+
+class UserChangesModel(ListModel):
+    KeyRole = Qt.UserRole + 1
+    LabelRole = Qt.UserRole + 2
+    ExtruderRole = Qt.UserRole + 3
+    OriginalValueRole = Qt.UserRole + 4
+    UserValueRole = Qt.UserRole + 6
+    CategoryRole = Qt.UserRole + 7
+
+    def __init__(self, parent = None):
+        super().__init__(parent = parent)
+        self.addRoleName(self.KeyRole, "key")
+        self.addRoleName(self.LabelRole, "label")
+        self.addRoleName(self.ExtruderRole, "extruder")
+        self.addRoleName(self.OriginalValueRole, "original_value")
+        self.addRoleName(self.UserValueRole, "user_value")
+        self.addRoleName(self.CategoryRole, "category")
+
+        self._i18n_catalog = None
+
+        self._update()
+
+    @pyqtSlot()
+    def forceUpdate(self):
+        self._update()
+
+    def _update(self):
+        application = Application.getInstance()
+        machine_manager = application.getMachineManager()
+        cura_formula_functions = application.getCuraFormulaFunctions()
+
+        item_dict = OrderedDict()
+        item_list = []
+        global_stack = machine_manager.activeMachine
+        if not global_stack:
+            return
+
+        stacks = [global_stack]
+        stacks.extend(global_stack.extruders.values())
+
+        # Check if the definition container has a translation file and ensure it's loaded.
+        definition = global_stack.getBottom()
+
+        definition_suffix = ContainerRegistry.getMimeTypeForContainer(type(definition)).preferredSuffix
+        catalog = i18nCatalog(os.path.basename(definition.getId() + "." + definition_suffix))
+
+        if catalog.hasTranslationLoaded():
+            self._i18n_catalog = catalog
+
+        for file_name in definition.getInheritedFiles():
+            catalog = i18nCatalog(os.path.basename(file_name))
+            if catalog.hasTranslationLoaded():
+                self._i18n_catalog = catalog
+
+        for stack in stacks:
+            # Make a list of all containers in the stack.
+            containers = []
+            latest_stack = stack
+            while latest_stack:
+                containers.extend(latest_stack.getContainers())
+                latest_stack = latest_stack.getNextStack()
+
+            # Override "getExtruderValue" with "getDefaultExtruderValue" so we can get the default values
+            user_changes = containers.pop(0)
+            default_value_resolve_context = cura_formula_functions.createContextForDefaultValueEvaluation(stack)
+
+            for setting_key in user_changes.getAllKeys():
+                original_value = None
+
+                # Find the category of the instance by moving up until we find a category.
+                category = user_changes.getInstance(setting_key).definition
+                while category.type != "category":
+                    category = category.parent
+
+                # Handle translation (and fallback if we weren't able to find any translation files.
+                if self._i18n_catalog:
+                    category_label = self._i18n_catalog.i18nc(category.key + " label", category.label)
+                else:
+                    category_label = category.label
+
+                if self._i18n_catalog:
+                    label = self._i18n_catalog.i18nc(setting_key + " label", stack.getProperty(setting_key, "label"))
+                else:
+                    label = stack.getProperty(setting_key, "label")
+
+                for container in containers:
+                    if stack == global_stack:
+                        resolve = global_stack.getProperty(setting_key, "resolve", default_value_resolve_context)
+                        if resolve is not None:
+                            original_value = resolve
+                            break
+
+                    original_value = container.getProperty(setting_key, "value", default_value_resolve_context)
+
+                    # If a value is a function, ensure it's called with the stack it's in.
+                    if isinstance(original_value, SettingFunction):
+                        original_value = original_value(stack, default_value_resolve_context)
+
+                    if original_value is not None:
+                        break
+
+                item_to_add = {"key": setting_key,
+                               "label": label,
+                               "user_value": str(user_changes.getProperty(setting_key, "value")),
+                               "original_value": str(original_value),
+                               "extruder": "",
+                               "category": category_label}
+
+                if stack != global_stack:
+                    item_to_add["extruder"] = stack.getName()
+
+                if category_label not in item_dict:
+                    item_dict[category_label] = []
+                item_dict[category_label].append(item_to_add)
+        for each_item_list in item_dict.values():
+            item_list += each_item_list
+        self.setItems(item_list)