Fix merge conflicts

.gitignore

@@ -42,7 +42,6 @@ plugins/cura-siemensnx-plugin
 plugins/CuraBlenderPlugin
 plugins/CuraCloudPlugin
 plugins/CuraDrivePlugin
-plugins/CuraDrive
 plugins/CuraLiveScriptingPlugin
 plugins/CuraOpenSCADPlugin
 plugins/CuraPrintProfileCreator

cura/API/Account.py

@@ -6,6 +6,7 @@ from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot, pyqtProperty
 
 from UM.i18n import i18nCatalog
 from UM.Message import Message
+from cura import UltimakerCloudAuthentication
 
 from cura.OAuth2.AuthorizationService import AuthorizationService
 from cura.OAuth2.Models import OAuth2Settings
@@ -37,15 +38,16 @@ class Account(QObject):
         self._logged_in = False
 
         self._callback_port = 32118
-        self._oauth_root = "https://account.ultimaker.com"
+        self._oauth_root = UltimakerCloudAuthentication.CuraCloudAccountAPIRoot
-        self._cloud_api_root = "https://api.ultimaker.com"
 
         self._oauth_settings = OAuth2Settings(
             OAUTH_SERVER_URL= self._oauth_root,
             CALLBACK_PORT=self._callback_port,
             CALLBACK_URL="http://localhost:{}/callback".format(self._callback_port),
             CLIENT_ID="um----------------------------ultimaker_cura",
-            CLIENT_SCOPES="account.user.read drive.backup.read drive.backup.write packages.download packages.rating.read packages.rating.write",
+            CLIENT_SCOPES="account.user.read drive.backup.read drive.backup.write packages.download "
+                          "packages.rating.read packages.rating.write connect.cluster.read connect.cluster.write "
+                          "cura.printjob.read cura.printjob.write cura.mesh.read cura.mesh.write",
             AUTH_DATA_PREFERENCE_KEY="general/ultimaker_auth_data",
             AUTH_SUCCESS_REDIRECT="{}/app/auth-success".format(self._oauth_root),
             AUTH_FAILED_REDIRECT="{}/app/auth-error".format(self._oauth_root)
@@ -60,6 +62,11 @@ class Account(QObject):
         self._authorization_service.onAuthenticationError.connect(self._onLoginStateChanged)
         self._authorization_service.loadAuthDataFromPreferences()
 
+    ## Returns a boolean indicating whether the given authentication is applied against staging or not.
+    @property
+    def is_staging(self) -> bool:
+        return "staging" in self._oauth_root
+
     @pyqtProperty(bool, notify=loginStateChanged)
     def isLoggedIn(self) -> bool:
         return self._logged_in

cura/API/Backups.py

@@ -1,6 +1,6 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
-from typing import Tuple, Optional, TYPE_CHECKING
+from typing import Tuple, Optional, TYPE_CHECKING, Dict, Any
 
 from cura.Backups.BackupsManager import BackupsManager
 
@@ -24,12 +24,12 @@ class Backups:
     ##  Create a new back-up using the BackupsManager.
     #   \return Tuple containing a ZIP file with the back-up data and a dict
     #   with metadata about the back-up.
-    def createBackup(self) -> Tuple[Optional[bytes], Optional[dict]]:
+    def createBackup(self) -> Tuple[Optional[bytes], Optional[Dict[str, Any]]]:
         return self.manager.createBackup()
 
     ##  Restore a back-up using the BackupsManager.
     #   \param zip_file A ZIP file containing the actual back-up data.
     #   \param meta_data Some metadata needed for restoring a back-up, like the
     #   Cura version number.
-    def restoreBackup(self, zip_file: bytes, meta_data: dict) -> None:
+    def restoreBackup(self, zip_file: bytes, meta_data: Dict[str, Any]) -> None:
         return self.manager.restoreBackup(zip_file, meta_data)

cura/ApplicationMetadata.py

@@ -0,0 +1,42 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+# ---------
+# Genearl constants used in Cura
+# ---------
+DEFAULT_CURA_DISPLAY_NAME = "Ultimaker Cura"
+DEFAULT_CURA_VERSION = "master"
+DEFAULT_CURA_BUILD_TYPE = ""
+DEFAULT_CURA_DEBUG_MODE = False
+DEFAULT_CURA_SDK_VERSION = "6.0.0"
+
+try:
+    from cura.CuraVersion import CuraAppDisplayName  # type: ignore
+    if CuraAppDisplayName == "":
+        CuraAppDisplayName = DEFAULT_CURA_DISPLAY_NAME
+except ImportError:
+    CuraAppDisplayName = DEFAULT_CURA_DISPLAY_NAME
+
+try:
+    from cura.CuraVersion import CuraVersion  # type: ignore
+    if CuraVersion == "":
+        CuraVersion = DEFAULT_CURA_VERSION
+except ImportError:
+    CuraVersion = DEFAULT_CURA_VERSION  # [CodeStyle: Reflecting imported value]
+
+try:
+    from cura.CuraVersion import CuraBuildType  # type: ignore
+except ImportError:
+    CuraBuildType = DEFAULT_CURA_BUILD_TYPE
+
+try:
+    from cura.CuraVersion import CuraDebugMode  # type: ignore
+except ImportError:
+    CuraDebugMode = DEFAULT_CURA_DEBUG_MODE
+
+try:
+    from cura.CuraVersion import CuraSDKVersion  # type: ignore
+    if CuraSDKVersion == "":
+        CuraSDKVersion = DEFAULT_CURA_SDK_VERSION
+except ImportError:
+    CuraSDKVersion = DEFAULT_CURA_SDK_VERSION

cura/BuildVolume.py

@@ -1052,6 +1052,12 @@ class BuildVolume(SceneNode):
         else:
             raise Exception("Unknown bed adhesion type. Did you forget to update the build volume calculations for your new bed adhesion type?")
 
+        max_length_available = 0.5 * min(
+            self._global_container_stack.getProperty("machine_width", "value"),
+            self._global_container_stack.getProperty("machine_depth", "value")
+        )
+        bed_adhesion_size = min(bed_adhesion_size, max_length_available)
+
         support_expansion = 0
         support_enabled = self._global_container_stack.getProperty("support_enable", "value")
         support_offset = self._global_container_stack.getProperty("support_offset", "value")

cura/CuraActions.py

@@ -36,12 +36,12 @@ class CuraActions(QObject):
         # Starting a web browser from a signal handler connected to a menu will crash on windows.
         # So instead, defer the call to the next run of the event loop, since that does work.
         # Note that weirdly enough, only signal handlers that open a web browser fail like that.
-        event = CallFunctionEvent(self._openUrl, [QUrl("http://ultimaker.com/en/support/software")], {})
+        event = CallFunctionEvent(self._openUrl, [QUrl("https://ultimaker.com/en/resources/manuals/software")], {})
         cura.CuraApplication.CuraApplication.getInstance().functionEvent(event)
 
     @pyqtSlot()
     def openBugReportPage(self) -> None:
-        event = CallFunctionEvent(self._openUrl, [QUrl("http://github.com/Ultimaker/Cura/issues")], {})
+        event = CallFunctionEvent(self._openUrl, [QUrl("https://github.com/Ultimaker/Cura/issues")], {})
         cura.CuraApplication.CuraApplication.getInstance().functionEvent(event)
 
     ##  Reset camera position and direction to default

cura/CuraApplication.py

@@ -4,7 +4,7 @@
 import os
 import sys
 import time
-from typing import cast, TYPE_CHECKING, Optional, Callable
+from typing import cast, TYPE_CHECKING, Optional, Callable, List
 
 import numpy
 
@@ -51,7 +51,7 @@ from cura.Arranging.ArrangeObjectsJob import ArrangeObjectsJob
 from cura.Arranging.ArrangeObjectsAllBuildPlatesJob import ArrangeObjectsAllBuildPlatesJob
 from cura.Arranging.ShapeArray import ShapeArray
 from cura.MultiplyObjectsJob import MultiplyObjectsJob
-from cura.PrintersModel import PrintersModel
+from cura.GlobalStacksModel import GlobalStacksModel
 from cura.Scene.ConvexHullDecorator import ConvexHullDecorator
 from cura.Operations.SetParentOperation import SetParentOperation
 from cura.Scene.SliceableObjectDecorator import SliceableObjectDecorator
@@ -117,6 +117,8 @@ from cura.ObjectsModel import ObjectsModel
 from cura.PrinterOutputDevice import PrinterOutputDevice
 from cura.PrinterOutput.NetworkMJPGImage import NetworkMJPGImage
 
+from cura import ApplicationMetadata, UltimakerCloudAuthentication
+
 from UM.FlameProfiler import pyqtSlot
 from UM.Decorators import override
 
@@ -129,21 +131,12 @@ if TYPE_CHECKING:
 
 numpy.seterr(all = "ignore")
 
-try:
-    from cura.CuraVersion import CuraAppDisplayName, CuraVersion, CuraBuildType, CuraDebugMode, CuraSDKVersion  # type: ignore
-except ImportError:
-    CuraAppDisplayName = "Ultimaker Cura"
-    CuraVersion = "master"  # [CodeStyle: Reflecting imported value]
-    CuraBuildType = ""
-    CuraDebugMode = False
-    CuraSDKVersion = "6.0.0"
-
 
 class CuraApplication(QtApplication):
     # SettingVersion represents the set of settings available in the machine/extruder definitions.
     # You need to make sure that this version number needs to be increased if there is any non-backwards-compatible
     # changes of the settings.
-    SettingVersion = 5
+    SettingVersion = 7
 
     Created = False
 
@@ -164,11 +157,11 @@ class CuraApplication(QtApplication):
 
     def __init__(self, *args, **kwargs):
         super().__init__(name = "cura",
-                         app_display_name = CuraAppDisplayName,
+                         app_display_name = ApplicationMetadata.CuraAppDisplayName,
-                         version = CuraVersion,
+                         version = ApplicationMetadata.CuraVersion,
-                         api_version = CuraSDKVersion,
+                         api_version = ApplicationMetadata.CuraSDKVersion,
-                         buildtype = CuraBuildType,
+                         buildtype = ApplicationMetadata.CuraBuildType,
-                         is_debug_mode = CuraDebugMode,
+                         is_debug_mode = ApplicationMetadata.CuraDebugMode,
                          tray_icon_name = "cura-icon-32.png",
                          **kwargs)
 
@@ -263,6 +256,14 @@ class CuraApplication(QtApplication):
         from cura.CuraPackageManager import CuraPackageManager
         self._package_manager_class = CuraPackageManager
 
+    @pyqtProperty(str, constant=True)
+    def ultimakerCloudApiRootUrl(self) -> str:
+        return UltimakerCloudAuthentication.CuraCloudAPIRoot
+
+    @pyqtProperty(str, constant = True)
+    def ultimakerCloudAccountRootUrl(self) -> str:
+        return UltimakerCloudAuthentication.CuraCloudAccountAPIRoot
+
     # Adds command line options to the command line parser. This should be called after the application is created and
     # before the pre-start.
     def addCommandLineOptions(self):
@@ -434,6 +435,7 @@ class CuraApplication(QtApplication):
     def startSplashWindowPhase(self) -> None:
         super().startSplashWindowPhase()
 
+        if not self.getIsHeadLess():
             self.setWindowIcon(QIcon(Resources.getPath(Resources.Images, "cura-icon.png")))
 
         self.setRequiredPlugins([
@@ -499,7 +501,8 @@ class CuraApplication(QtApplication):
         preferences.addPreference("cura/choice_on_profile_override", "always_ask")
         preferences.addPreference("cura/choice_on_open_project", "always_ask")
         preferences.addPreference("cura/use_multi_build_plate", False)
-
+        preferences.addPreference("view/settings_list_height", 400)
+        preferences.addPreference("view/settings_visible", False)
         preferences.addPreference("cura/currency", "€")
         preferences.addPreference("cura/material_settings", "{}")
 
@@ -664,12 +667,12 @@ class CuraApplication(QtApplication):
 
     ##  Handle loading of all plugin types (and the backend explicitly)
     #   \sa PluginRegistry
-    def _loadPlugins(self):
+    def _loadPlugins(self) -> None:
         self._plugin_registry.addType("profile_reader", self._addProfileReader)
         self._plugin_registry.addType("profile_writer", self._addProfileWriter)
 
         if Platform.isLinux():
-            lib_suffixes = {"", "64", "32", "x32"} #A few common ones on different distributions.
+            lib_suffixes = {"", "64", "32", "x32"}  # A few common ones on different distributions.
         else:
             lib_suffixes = {""}
         for suffix in lib_suffixes:
@@ -953,7 +956,7 @@ class CuraApplication(QtApplication):
         engine.rootContext().setContextProperty("CuraApplication", self)
         engine.rootContext().setContextProperty("PrintInformation", self._print_information)
         engine.rootContext().setContextProperty("CuraActions", self._cura_actions)
-        engine.rootContext().setContextProperty("CuraSDKVersion", CuraSDKVersion)
+        engine.rootContext().setContextProperty("CuraSDKVersion", ApplicationMetadata.CuraSDKVersion)
 
         qmlRegisterUncreatableType(CuraApplication, "Cura", 1, 0, "ResourceTypes", "Just an Enum type")
 
@@ -971,7 +974,7 @@ class CuraApplication(QtApplication):
         qmlRegisterType(MultiBuildPlateModel, "Cura", 1, 0, "MultiBuildPlateModel")
         qmlRegisterType(InstanceContainer, "Cura", 1, 0, "InstanceContainer")
         qmlRegisterType(ExtrudersModel, "Cura", 1, 0, "ExtrudersModel")
-        qmlRegisterType(PrintersModel, "Cura", 1, 0, "PrintersModel")
+        qmlRegisterType(GlobalStacksModel, "Cura", 1, 0, "GlobalStacksModel")
 
         qmlRegisterType(FavoriteMaterialsModel, "Cura", 1, 0, "FavoriteMaterialsModel")
         qmlRegisterType(GenericMaterialsModel, "Cura", 1, 0, "GenericMaterialsModel")
@@ -1105,88 +1108,6 @@ class CuraApplication(QtApplication):
         self._platform_activity = True if count > 0 else False
         self.activityChanged.emit()
 
-    # Remove all selected objects from the scene.
-    @pyqtSlot()
-    @deprecated("Moved to CuraActions", "2.6")
-    def deleteSelection(self):
-        if not self.getController().getToolsEnabled():
-            return
-        removed_group_nodes = []
-        op = GroupedOperation()
-        nodes = Selection.getAllSelectedObjects()
-        for node in nodes:
-            op.addOperation(RemoveSceneNodeOperation(node))
-            group_node = node.getParent()
-            if group_node and group_node.callDecoration("isGroup") and group_node not in removed_group_nodes:
-                remaining_nodes_in_group = list(set(group_node.getChildren()) - set(nodes))
-                if len(remaining_nodes_in_group) == 1:
-                    removed_group_nodes.append(group_node)
-                    op.addOperation(SetParentOperation(remaining_nodes_in_group[0], group_node.getParent()))
-                    op.addOperation(RemoveSceneNodeOperation(group_node))
-        op.push()
-
-    ##  Remove an object from the scene.
-    #   Note that this only removes an object if it is selected.
-    @pyqtSlot("quint64")
-    @deprecated("Use deleteSelection instead", "2.6")
-    def deleteObject(self, object_id):
-        if not self.getController().getToolsEnabled():
-            return
-
-        node = self.getController().getScene().findObject(object_id)
-
-        if not node and object_id != 0:  # Workaround for tool handles overlapping the selected object
-            node = Selection.getSelectedObject(0)
-
-        if node:
-            op = GroupedOperation()
-            op.addOperation(RemoveSceneNodeOperation(node))
-
-            group_node = node.getParent()
-            if group_node:
-                # Note that at this point the node has not yet been deleted
-                if len(group_node.getChildren()) <= 2 and group_node.callDecoration("isGroup"):
-                    op.addOperation(SetParentOperation(group_node.getChildren()[0], group_node.getParent()))
-                    op.addOperation(RemoveSceneNodeOperation(group_node))
-
-            op.push()
-
-    ##  Create a number of copies of existing object.
-    #   \param object_id
-    #   \param count number of copies
-    #   \param min_offset minimum offset to other objects.
-    @pyqtSlot("quint64", int)
-    @deprecated("Use CuraActions::multiplySelection", "2.6")
-    def multiplyObject(self, object_id, count, min_offset = 8):
-        node = self.getController().getScene().findObject(object_id)
-        if not node:
-            node = Selection.getSelectedObject(0)
-
-        while node.getParent() and node.getParent().callDecoration("isGroup"):
-            node = node.getParent()
-
-        job = MultiplyObjectsJob([node], count, min_offset)
-        job.start()
-        return
-
-    ##  Center object on platform.
-    @pyqtSlot("quint64")
-    @deprecated("Use CuraActions::centerSelection", "2.6")
-    def centerObject(self, object_id):
-        node = self.getController().getScene().findObject(object_id)
-        if not node and object_id != 0:  # Workaround for tool handles overlapping the selected object
-            node = Selection.getSelectedObject(0)
-
-        if not node:
-            return
-
-        if node.getParent() and node.getParent().callDecoration("isGroup"):
-            node = node.getParent()
-
-        if node:
-            op = SetTransformOperation(node, Vector())
-            op.push()
-
     ##  Select all nodes containing mesh data in the scene.
     @pyqtSlot()
     def selectAll(self):
@@ -1266,62 +1187,75 @@ class CuraApplication(QtApplication):
 
     ##  Arrange all objects.
     @pyqtSlot()
-    def arrangeObjectsToAllBuildPlates(self):
+    def arrangeObjectsToAllBuildPlates(self) -> None:
-        nodes = []
+        nodes_to_arrange = []
-        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
+        for node in DepthFirstIterator(self.getController().getScene().getRoot()):  # type: ignore
             if not isinstance(node, SceneNode):
                 continue
+
             if not node.getMeshData() and not node.callDecoration("isGroup"):
                 continue  # Node that doesnt have a mesh and is not a group.
-            if node.getParent() and node.getParent().callDecoration("isGroup"):
+
-                continue  # Grouped nodes don't need resetting as their parent (the group) is resetted)
+            parent_node = node.getParent()
+            if parent_node and parent_node.callDecoration("isGroup"):
+                continue  # Grouped nodes don't need resetting as their parent (the group) is reset)
+
             if not node.callDecoration("isSliceable") and not node.callDecoration("isGroup"):
                 continue  # i.e. node with layer data
+
+            bounding_box = node.getBoundingBox()
             # Skip nodes that are too big
-            if node.getBoundingBox().width < self._volume.getBoundingBox().width or node.getBoundingBox().depth < self._volume.getBoundingBox().depth:
+            if bounding_box is None or bounding_box.width < self._volume.getBoundingBox().width or bounding_box.depth < self._volume.getBoundingBox().depth:
-                nodes.append(node)
+                nodes_to_arrange.append(node)
-        job = ArrangeObjectsAllBuildPlatesJob(nodes)
+        job = ArrangeObjectsAllBuildPlatesJob(nodes_to_arrange)
         job.start()
         self.getCuraSceneController().setActiveBuildPlate(0)  # Select first build plate
 
     # Single build plate
     @pyqtSlot()
-    def arrangeAll(self):
+    def arrangeAll(self) -> None:
-        nodes = []
+        nodes_to_arrange = []
         active_build_plate = self.getMultiBuildPlateModel().activeBuildPlate
-        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
+        for node in DepthFirstIterator(self.getController().getScene().getRoot()):  # type: ignore
             if not isinstance(node, SceneNode):
                 continue
+
             if not node.getMeshData() and not node.callDecoration("isGroup"):
                 continue  # Node that doesnt have a mesh and is not a group.
-            if node.getParent() and node.getParent().callDecoration("isGroup"):
+
+            parent_node = node.getParent()
+            if parent_node and parent_node.callDecoration("isGroup"):
                 continue  # Grouped nodes don't need resetting as their parent (the group) is resetted)
+
             if not node.isSelectable():
                 continue  # i.e. node with layer data
+
             if not node.callDecoration("isSliceable") and not node.callDecoration("isGroup"):
                 continue  # i.e. node with layer data
+
             if node.callDecoration("getBuildPlateNumber") == active_build_plate:
                 # Skip nodes that are too big
-                if node.getBoundingBox().width < self._volume.getBoundingBox().width or node.getBoundingBox().depth < self._volume.getBoundingBox().depth:
+                bounding_box = node.getBoundingBox()
-                    nodes.append(node)
+                if bounding_box is None or bounding_box.width < self._volume.getBoundingBox().width or bounding_box.depth < self._volume.getBoundingBox().depth:
-        self.arrange(nodes, fixed_nodes = [])
+                    nodes_to_arrange.append(node)
+        self.arrange(nodes_to_arrange, fixed_nodes = [])
 
     ##  Arrange a set of nodes given a set of fixed nodes
     #   \param nodes nodes that we have to place
     #   \param fixed_nodes nodes that are placed in the arranger before finding spots for nodes
-    def arrange(self, nodes, fixed_nodes):
+    def arrange(self, nodes: List[SceneNode], fixed_nodes: List[SceneNode]) -> None:
         min_offset = self.getBuildVolume().getEdgeDisallowedSize() + 2  # Allow for some rounding errors
         job = ArrangeObjectsJob(nodes, fixed_nodes, min_offset = max(min_offset, 8))
         job.start()
 
     ##  Reload all mesh data on the screen from file.
     @pyqtSlot()
-    def reloadAll(self):
+    def reloadAll(self) -> None:
         Logger.log("i", "Reloading all loaded mesh data.")
         nodes = []
         has_merged_nodes = False
-        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
+        for node in DepthFirstIterator(self.getController().getScene().getRoot()):  # type: ignore
-            if not isinstance(node, CuraSceneNode) or not node.getMeshData() :
+            if not isinstance(node, CuraSceneNode) or not node.getMeshData():
                 if node.getName() == "MergedMesh":
                     has_merged_nodes = True
                 continue
@@ -1335,7 +1269,7 @@ class CuraApplication(QtApplication):
             file_name = node.getMeshData().getFileName()
             if file_name:
                 job = ReadMeshJob(file_name)
-                job._node = node
+                job._node = node  # type: ignore
                 job.finished.connect(self._reloadMeshFinished)
                 if has_merged_nodes:
                     job.finished.connect(self.updateOriginOfMergedMeshes)
@@ -1344,20 +1278,8 @@ class CuraApplication(QtApplication):
             else:
                 Logger.log("w", "Unable to reload data because we don't have a filename.")
 
-
-    ##  Get logging data of the backend engine
-    #   \returns \type{string} Logging data
-    @pyqtSlot(result = str)
-    def getEngineLog(self):
-        log = ""
-
-        for entry in self.getBackend().getLog():
-            log += entry.decode()
-
-        return log
-
     @pyqtSlot("QStringList")
-    def setExpandedCategories(self, categories):
+    def setExpandedCategories(self, categories: List[str]) -> None:
         categories = list(set(categories))
         categories.sort()
         joined = ";".join(categories)
@@ -1368,7 +1290,7 @@ class CuraApplication(QtApplication):
     expandedCategoriesChanged = pyqtSignal()
 
     @pyqtProperty("QStringList", notify = expandedCategoriesChanged)
-    def expandedCategories(self):
+    def expandedCategories(self) -> List[str]:
         return self.getPreferences().getValue("cura/categories_expanded").split(";")
 
     @pyqtSlot()
@@ -1418,13 +1340,12 @@ class CuraApplication(QtApplication):
 
 
     ##  Updates origin position of all merged meshes
-    #   \param jobNode \type{Job} empty object which passed which is required by JobQueue
+    def updateOriginOfMergedMeshes(self, _):
-    def updateOriginOfMergedMeshes(self, jobNode):
         group_nodes = []
         for node in DepthFirstIterator(self.getController().getScene().getRoot()):
             if isinstance(node, CuraSceneNode) and node.getName() == "MergedMesh":
 
-                #checking by name might be not enough, the merged mesh should has "GroupDecorator" decorator
+                # Checking by name might be not enough, the merged mesh should has "GroupDecorator" decorator
                 for decorator in node.getDecorators():
                     if isinstance(decorator, GroupDecorator):
                         group_nodes.append(node)
@@ -1468,7 +1389,7 @@ class CuraApplication(QtApplication):
 
 
     @pyqtSlot()
-    def groupSelected(self):
+    def groupSelected(self) -> None:
         # Create a group-node
         group_node = CuraSceneNode()
         group_decorator = GroupDecorator()
@@ -1484,7 +1405,8 @@ class CuraApplication(QtApplication):
         # Remove nodes that are directly parented to another selected node from the selection so they remain parented
         selected_nodes = Selection.getAllSelectedObjects().copy()
         for node in selected_nodes:
-            if node.getParent() in selected_nodes and not node.getParent().callDecoration("isGroup"):
+            parent = node.getParent()
+            if parent is not None and parent in selected_nodes and not parent.callDecoration("isGroup"):
                 Selection.remove(node)
 
         # Move selected nodes into the group-node
@@ -1496,7 +1418,7 @@ class CuraApplication(QtApplication):
         Selection.add(group_node)
 
     @pyqtSlot()
-    def ungroupSelected(self):
+    def ungroupSelected(self) -> None:
         selected_objects = Selection.getAllSelectedObjects().copy()
         for node in selected_objects:
             if node.callDecoration("isGroup"):
@@ -1519,7 +1441,7 @@ class CuraApplication(QtApplication):
                 # Note: The group removes itself from the scene once all its children have left it,
                 # see GroupDecorator._onChildrenChanged
 
-    def _createSplashScreen(self):
+    def _createSplashScreen(self) -> Optional[CuraSplashScreen.CuraSplashScreen]:
         if self._is_headless:
             return None
         return CuraSplashScreen.CuraSplashScreen()

cura/CuraVersion.py.in

@@ -8,3 +8,4 @@ CuraDebugMode = True if "@_cura_debugmode@" == "ON" else False
 CuraSDKVersion = "@CURA_SDK_VERSION@"
 CuraCloudAPIRoot = "@CURA_CLOUD_API_ROOT@"
 CuraCloudAPIVersion = "@CURA_CLOUD_API_VERSION@"
+CuraCloudAccountAPIRoot = "@CURA_CLOUD_ACCOUNT_API_ROOT@"

cura/GlobalStacksModel.py

@@ -1,18 +1,15 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
+from PyQt5.QtCore import pyqtProperty, Qt
+
 from UM.Qt.ListModel import ListModel
-
-from PyQt5.QtCore import pyqtProperty, Qt, pyqtSignal
-
 from UM.Settings.ContainerRegistry import ContainerRegistry
-from UM.Settings.ContainerStack import ContainerStack
 
 from cura.PrinterOutputDevice import ConnectionType
 
-from cura.Settings.GlobalStack import GlobalStack
 
-class PrintersModel(ListModel):
+class GlobalStacksModel(ListModel):
     NameRole = Qt.UserRole + 1
     IdRole = Qt.UserRole + 2
     HasRemoteConnectionRole = Qt.UserRole + 3
@@ -37,25 +34,20 @@ class PrintersModel(ListModel):
 
     ##  Handler for container added/removed events from registry
     def _onContainerChanged(self, container):
+        from cura.Settings.GlobalStack import GlobalStack  # otherwise circular imports
+
         # We only need to update when the added / removed container GlobalStack
         if isinstance(container, GlobalStack):
             self._update()
 
-    ##  Handler for container name change events.
-    def _onContainerNameChanged(self):
-        self._update()
-
     def _update(self) -> None:
         items = []
-        for container in self._container_stacks:
-            container.nameChanged.disconnect(self._onContainerNameChanged)
 
         container_stacks = ContainerRegistry.getInstance().findContainerStacks(type = "machine")
 
         for container_stack in container_stacks:
-            connection_type = container_stack.getMetaDataEntry("connection_type")
+            connection_type = int(container_stack.getMetaDataEntry("connection_type", ConnectionType.NotConnected.value))
             has_remote_connection = connection_type in [ConnectionType.NetworkConnection.value, ConnectionType.CloudConnection.value]
-
             if container_stack.getMetaDataEntry("hidden", False) in ["True", True]:
                 continue
 

cura/LayerPolygon.py

@@ -5,6 +5,8 @@ from UM.Application import Application
 from typing import Any
 import numpy
 
+from UM.Logger import Logger
+
 
 class LayerPolygon:
     NoneType = 0
@@ -18,7 +20,8 @@ class LayerPolygon:
     MoveCombingType = 8
     MoveRetractionType = 9
     SupportInterfaceType = 10
-    __number_of_types = 11
+    PrimeTower = 11
+    __number_of_types = 12
 
     __jump_map = numpy.logical_or(numpy.logical_or(numpy.arange(__number_of_types) == NoneType, numpy.arange(__number_of_types) == MoveCombingType), numpy.arange(__number_of_types) == MoveRetractionType)
 
@@ -33,7 +36,8 @@ class LayerPolygon:
         self._extruder = extruder
         self._types = line_types
         for i in range(len(self._types)):
-            if self._types[i] >= self.__number_of_types: #Got faulty line data from the engine.
+            if self._types[i] >= self.__number_of_types: # Got faulty line data from the engine.
+                Logger.log("w", "Found an unknown line type: %s", i)
                 self._types[i] = self.NoneType
         self._data = data
         self._line_widths = line_widths
@@ -236,7 +240,8 @@ class LayerPolygon:
                 theme.getColor("layerview_support_infill").getRgbF(), # SupportInfillType
                 theme.getColor("layerview_move_combing").getRgbF(), # MoveCombingType
                 theme.getColor("layerview_move_retraction").getRgbF(), # MoveRetractionType
-                theme.getColor("layerview_support_interface").getRgbF()  # SupportInterfaceType
+                theme.getColor("layerview_support_interface").getRgbF(),  # SupportInterfaceType
+                theme.getColor("layerview_prime_tower").getRgbF()
             ])
 
         return cls.__color_map

cura/Machines/MaterialManager.py

@@ -302,6 +302,10 @@ class MaterialManager(QObject):
     def getMaterialGroupListByGUID(self, guid: str) -> Optional[List[MaterialGroup]]:
         return self._guid_material_groups_map.get(guid)
 
+    # Returns a dict of all material groups organized by root_material_id.
+    def getAllMaterialGroups(self) -> Dict[str, "MaterialGroup"]:
+        return self._material_group_map
+
     #
     # Return a dict with all root material IDs (k) and ContainerNodes (v) that's suitable for the given setup.
     #
@@ -679,7 +683,11 @@ class MaterialManager(QObject):
 
     @pyqtSlot(str)
     def removeFavorite(self, root_material_id: str) -> None:
+        try:
             self._favorites.remove(root_material_id)
+        except KeyError:
+            Logger.log("w", "Could not delete material %s from favorites as it was already deleted", root_material_id)
+            return
         self.materialsUpdated.emit()
 
         # Ensure all settings are saved.

cura/Machines/Models/QualityProfilesDropDownMenuModel.py

@@ -1,7 +1,7 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-from PyQt5.QtCore import Qt
+from PyQt5.QtCore import Qt, QTimer
 
 from UM.Application import Application
 from UM.Logger import Logger
@@ -39,15 +39,23 @@ class QualityProfilesDropDownMenuModel(ListModel):
         self._machine_manager = self._application.getMachineManager()
         self._quality_manager = Application.getInstance().getQualityManager()
 
-        self._application.globalContainerStackChanged.connect(self._update)
+        self._application.globalContainerStackChanged.connect(self._onChange)
-        self._machine_manager.activeQualityGroupChanged.connect(self._update)
+        self._machine_manager.activeQualityGroupChanged.connect(self._onChange)
-        self._machine_manager.extruderChanged.connect(self._update)
+        self._machine_manager.extruderChanged.connect(self._onChange)
-        self._quality_manager.qualitiesUpdated.connect(self._update)
+        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._update()
 
+    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__))
 

cura/Machines/Models/SettingVisibilityPresetsModel.py

@@ -6,6 +6,7 @@ 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
@@ -18,14 +19,20 @@ class SettingVisibilityPresetsModel(QObject):
     onItemsChanged = pyqtSignal()
     activePresetChanged = pyqtSignal()
 
-    def __init__(self, preferences, parent = None):
+    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
 
@@ -42,7 +49,8 @@ class SettingVisibilityPresetsModel(QObject):
         visible_settings = self._preferences.getValue("general/visible_settings")
 
         if not visible_settings:
-            self._preferences.setValue("general/visible_settings", ";".join(self._active_preset_item.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")
 
@@ -59,9 +67,7 @@ class SettingVisibilityPresetsModel(QObject):
     def _populate(self) -> None:
         from cura.CuraApplication import CuraApplication
         items = []  # type: List[SettingVisibilityPreset]
-
+        items.append(self._custom_preset)
-        custom_preset = SettingVisibilityPreset(preset_id="custom", name ="Custom selection", weight = -100)
-        items.append(custom_preset)
         for file_path in Resources.getAllResourcesOfType(CuraApplication.ResourceTypes.SettingVisibilityPreset):
             setting_visibility_preset = SettingVisibilityPreset()
             try:
@@ -77,7 +83,7 @@ class SettingVisibilityPresetsModel(QObject):
         self.setItems(items)
 
     @pyqtProperty("QVariantList", notify = onItemsChanged)
-    def items(self):
+    def items(self) -> List[SettingVisibilityPreset]:
         return self._items
 
     def setItems(self, items: List[SettingVisibilityPreset]) -> None:
@@ -87,7 +93,7 @@ class SettingVisibilityPresetsModel(QObject):
 
     @pyqtSlot(str)
     def setActivePreset(self, preset_id: str) -> None:
-        if preset_id == self._active_preset_item.presetId:
+        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
 
@@ -96,7 +102,7 @@ class SettingVisibilityPresetsModel(QObject):
             Logger.log("w", "Tried to set active preset to unknown id [%s]", preset_id)
             return
 
-        need_to_save_to_custom = self._active_preset_item.presetId == "custom" and preset_id != "custom"
+        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")
@@ -117,7 +123,9 @@ class SettingVisibilityPresetsModel(QObject):
 
     @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":
@@ -149,7 +157,12 @@ class SettingVisibilityPresetsModel(QObject):
         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/MultiplyObjectsJob.py

@@ -25,7 +25,7 @@ class MultiplyObjectsJob(Job):
 
     def run(self):
         status_message = Message(i18n_catalog.i18nc("@info:status", "Multiplying and placing objects"), lifetime=0,
-                                 dismissable=False, progress=0, title = i18n_catalog.i18nc("@info:title", "Placing Object"))
+                                 dismissable=False, progress=0, title = i18n_catalog.i18nc("@info:title", "Placing Objects"))
         status_message.show()
         scene = Application.getInstance().getController().getScene()
 

cura/OAuth2/AuthorizationService.py

@@ -52,8 +52,11 @@ class AuthorizationService:
         if not self._user_profile:
             # If no user profile was stored locally, we try to get it from JWT.
             self._user_profile = self._parseJWT()
-        if not self._user_profile:
+
+        if not self._user_profile and self._auth_data:
             # If there is still no user profile from the JWT, we have to log in again.
+            Logger.log("w", "The user profile could not be loaded. The user must log in again!")
+            self.deleteAuthData()
             return None
 
         return self._user_profile
@@ -83,9 +86,11 @@ class AuthorizationService:
         if not self.getUserProfile():
             # We check if we can get the user profile.
             # If we can't get it, that means the access token (JWT) was invalid or expired.
+            Logger.log("w", "Unable to get the user profile.")
             return None
 
         if self._auth_data is None:
+            Logger.log("d", "No auth data to retrieve the access_token from")
             return None
 
         return self._auth_data.access_token

cura/PrinterOutput/ConfigurationModel.py

@@ -54,7 +54,7 @@ class ConfigurationModel(QObject):
         for configuration in self._extruder_configurations:
             if configuration is None:
                 return False
-        return self._printer_type is not None
+        return self._printer_type != ""
 
     def __str__(self):
         message_chunks = []

cura/PrinterOutput/NetworkedPrinterOutputDevice.py

@@ -4,6 +4,7 @@
 from UM.FileHandler.FileHandler import FileHandler #For typing.
 from UM.Logger import Logger
 from UM.Scene.SceneNode import SceneNode #For typing.
+from cura.API import Account
 from cura.CuraApplication import CuraApplication
 
 from cura.PrinterOutputDevice import PrinterOutputDevice, ConnectionState, ConnectionType
@@ -11,12 +12,13 @@ from cura.PrinterOutputDevice import PrinterOutputDevice, ConnectionState, Conne
 from PyQt5.QtNetwork import QHttpMultiPart, QHttpPart, QNetworkRequest, QNetworkAccessManager, QNetworkReply, QAuthenticator
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject, QUrl, QCoreApplication
 from time import time
-from typing import Any, Callable, Dict, List, Optional
+from typing import Callable, Dict, List, Optional, Union
 from enum import IntEnum
 
 import os  # To get the username
 import gzip
 
+
 class AuthState(IntEnum):
     NotAuthenticated = 1
     AuthenticationRequested = 2
@@ -41,7 +43,8 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
         self._api_prefix = ""
         self._address = address
         self._properties = properties
-        self._user_agent = "%s/%s " % (CuraApplication.getInstance().getApplicationName(), CuraApplication.getInstance().getVersion())
+        self._user_agent = "%s/%s " % (CuraApplication.getInstance().getApplicationName(),
+                                       CuraApplication.getInstance().getVersion())
 
         self._onFinishedCallbacks = {}      # type: Dict[str, Callable[[QNetworkReply], None]]
         self._authentication_state = AuthState.NotAuthenticated
@@ -55,7 +58,8 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
         self._gcode = []                    # type: List[str]
         self._connection_state_before_timeout = None    # type: Optional[ConnectionState]
 
-    def requestWrite(self, nodes: List[SceneNode], file_name: Optional[str] = None, limit_mimetypes: bool = False, file_handler: Optional[FileHandler] = None, **kwargs: str) -> None:
+    def requestWrite(self, nodes: List[SceneNode], file_name: Optional[str] = None, limit_mimetypes: bool = False,
+                     file_handler: Optional[FileHandler] = None, **kwargs: str) -> None:
         raise NotImplementedError("requestWrite needs to be implemented")
 
     def setAuthenticationState(self, authentication_state: AuthState) -> None:
@@ -143,10 +147,12 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
         url = QUrl("http://" + self._address + self._api_prefix + target)
         request = QNetworkRequest(url)
         if content_type is not None:
-            request.setHeader(QNetworkRequest.ContentTypeHeader, "application/json")
+            request.setHeader(QNetworkRequest.ContentTypeHeader, content_type)
         request.setHeader(QNetworkRequest.UserAgentHeader, self._user_agent)
         return request
 
+    ##  This method was only available privately before, but it was actually called from SendMaterialJob.py.
+    #   We now have a public equivalent as well. We did not remove the private one as plugins might be using that.
     def createFormPart(self, content_header: str, data: bytes, content_type: Optional[str] = None) -> QHttpPart:
         return self._createFormPart(content_header, data, content_type)
 
@@ -163,9 +169,15 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
         part.setBody(data)
         return part
 
-    ##  Convenience function to get the username from the OS.
+    ##  Convenience function to get the username, either from the cloud or from the OS.
-    #   The code was copied from the getpass module, as we try to use as little dependencies as possible.
     def _getUserName(self) -> str:
+        # check first if we are logged in with the Ultimaker Account
+        account = CuraApplication.getInstance().getCuraAPI().account  # type: Account
+        if account and account.isLoggedIn:
+            return account.userName
+
+        # Otherwise get the username from the US
+        # The code below was copied from the getpass module, as we try to use as little dependencies as possible.
         for name in ("LOGNAME", "USER", "LNAME", "USERNAME"):
             user = os.environ.get(name)
             if user:
@@ -181,49 +193,89 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
             self._createNetworkManager()
         assert (self._manager is not None)
 
-    def put(self, target: str, data: str, on_finished: Optional[Callable[[QNetworkReply], None]]) -> None:
+    ## Sends a put request to the given path.
+    #  \param url: The path after the API prefix.
+    #  \param data: The data to be sent in the body
+    #  \param content_type: The content type of the body data.
+    #  \param on_finished: The function to call when the response is received.
+    #  \param on_progress: The function to call when the progress changes. Parameters are bytes_sent / bytes_total.
+    def put(self, url: str, data: Union[str, bytes], content_type: Optional[str] = None,
+            on_finished: Optional[Callable[[QNetworkReply], None]] = None,
+            on_progress: Optional[Callable[[int, int], None]] = None) -> None:
         self._validateManager()
-        request = self._createEmptyRequest(target)
-        self._last_request_time = time()
-        if self._manager is not None:
-            reply = self._manager.put(request, data.encode())
-            self._registerOnFinishedCallback(reply, on_finished)
-        else:
-            Logger.log("e", "Could not find manager.")
 
-    def delete(self, target: str, on_finished: Optional[Callable[[QNetworkReply], None]]) -> None:
+        request = self._createEmptyRequest(url, content_type = content_type)
-        self._validateManager()
-        request = self._createEmptyRequest(target)
         self._last_request_time = time()
-        if self._manager is not None:
+
+        if not self._manager:
+            Logger.log("e", "No network manager was created to execute the PUT call with.")
+            return
+
+        body = data if isinstance(data, bytes) else data.encode()  # type: bytes
+        reply = self._manager.put(request, body)
+        self._registerOnFinishedCallback(reply, on_finished)
+
+        if on_progress is not None:
+            reply.uploadProgress.connect(on_progress)
+
+    ## Sends a delete request to the given path.
+    #  \param url: The path after the API prefix.
+    #  \param on_finished: The function to be call when the response is received.
+    def delete(self, url: str, on_finished: Optional[Callable[[QNetworkReply], None]]) -> None:
+        self._validateManager()
+
+        request = self._createEmptyRequest(url)
+        self._last_request_time = time()
+
+        if not self._manager:
+            Logger.log("e", "No network manager was created to execute the DELETE call with.")
+            return
+
         reply = self._manager.deleteResource(request)
         self._registerOnFinishedCallback(reply, on_finished)
-        else:
-            Logger.log("e", "Could not find manager.")
 
-    def get(self, target: str, on_finished: Optional[Callable[[QNetworkReply], None]]) -> None:
+    ## Sends a get request to the given path.
+    #  \param url: The path after the API prefix.
+    #  \param on_finished: The function to be call when the response is received.
+    def get(self, url: str, on_finished: Optional[Callable[[QNetworkReply], None]]) -> None:
         self._validateManager()
-        request = self._createEmptyRequest(target)
+
+        request = self._createEmptyRequest(url)
         self._last_request_time = time()
-        if self._manager is not None:
+
+        if not self._manager:
+            Logger.log("e", "No network manager was created to execute the GET call with.")
+            return
+
         reply = self._manager.get(request)
         self._registerOnFinishedCallback(reply, on_finished)
-        else:
-            Logger.log("e", "Could not find manager.")
 
-    def post(self, target: str, data: str, on_finished: Optional[Callable[[QNetworkReply], None]], on_progress: Callable = None) -> None:
+    ## Sends a post request to the given path.
+    #  \param url: The path after the API prefix.
+    #  \param data: The data to be sent in the body
+    #  \param on_finished: The function to call when the response is received.
+    #  \param on_progress: The function to call when the progress changes. Parameters are bytes_sent / bytes_total.
+    def post(self, url: str, data: Union[str, bytes],
+             on_finished: Optional[Callable[[QNetworkReply], None]],
+             on_progress: Optional[Callable[[int, int], None]] = None) -> None:
         self._validateManager()
-        request = self._createEmptyRequest(target)
+
+        request = self._createEmptyRequest(url)
         self._last_request_time = time()
-        if self._manager is not None:
+
-            reply = self._manager.post(request, data.encode())
+        if not self._manager:
+            Logger.log("e", "Could not find manager.")
+            return
+
+        body = data if isinstance(data, bytes) else data.encode()  # type: bytes
+        reply = self._manager.post(request, body)
         if on_progress is not None:
             reply.uploadProgress.connect(on_progress)
         self._registerOnFinishedCallback(reply, on_finished)
-        else:
-            Logger.log("e", "Could not find manager.")
 
-    def postFormWithParts(self, target: str, parts: List[QHttpPart], on_finished: Optional[Callable[[QNetworkReply], None]], on_progress: Callable = None) -> QNetworkReply:
+    def postFormWithParts(self, target: str, parts: List[QHttpPart],
+                          on_finished: Optional[Callable[[QNetworkReply], None]],
+                          on_progress: Optional[Callable[[int, int], None]] = None) -> QNetworkReply:
         self._validateManager()
         request = self._createEmptyRequest(target, content_type=None)
         multi_post_part = QHttpMultiPart(QHttpMultiPart.FormDataType)

cura/PrinterOutput/PrintJobOutputModel.py

@@ -132,9 +132,9 @@ class PrintJobOutputModel(QObject):
 
     @pyqtProperty(float, notify = timeElapsedChanged)
     def progress(self) -> float:
-        result = self.timeElapsed / self.timeTotal
+        time_elapsed = max(float(self.timeElapsed), 1.0)  # Prevent a division by zero exception
-        # Never get a progress past 1.0
+        result = time_elapsed / self.timeTotal
-        return min(result, 1.0)
+        return min(result, 1.0)  # Never get a progress past 1.0
 
     @pyqtProperty(str, notify=stateChanged)
     def state(self) -> str:

cura/PrinterOutputDevice.py

@@ -1,10 +1,12 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
+from enum import IntEnum
+from typing import Callable, List, Optional, Union
 
 from UM.Decorators import deprecated
 from UM.i18n import i18nCatalog
 from UM.OutputDevice.OutputDevice import OutputDevice
-from PyQt5.QtCore import pyqtProperty, pyqtSignal, QObject, QTimer, QUrl, Q_ENUMS
+from PyQt5.QtCore import pyqtProperty, pyqtSignal, QObject, QTimer, QUrl
 from PyQt5.QtWidgets import QMessageBox
 
 from UM.Logger import Logger
@@ -12,9 +14,6 @@ from UM.Signal import signalemitter
 from UM.Qt.QtApplication import QtApplication
 from UM.FlameProfiler import pyqtSlot
 
-from enum import IntEnum  # For the connection state tracking.
-from typing import Callable, List, Optional, Union
-
 MYPY = False
 if MYPY:
     from cura.PrinterOutput.PrinterOutputModel import PrinterOutputModel
@@ -36,7 +35,7 @@ class ConnectionState(IntEnum):
 
 
 class ConnectionType(IntEnum):
-    Unknown = 0
+    NotConnected = 0
     UsbConnection = 1
     NetworkConnection = 2
     CloudConnection = 3
@@ -54,10 +53,6 @@ class ConnectionType(IntEnum):
 @signalemitter
 class PrinterOutputDevice(QObject, OutputDevice):
 
-    # Put ConnectionType here with Q_ENUMS() so it can be registered as a QML type and accessible via QML, and there is
-    # no need to remember what those Enum integer values mean.
-    Q_ENUMS(ConnectionType)
-
     printersChanged = pyqtSignal()
     connectionStateChanged = pyqtSignal(str)
     acceptsCommandsChanged = pyqtSignal()
@@ -74,34 +69,34 @@ class PrinterOutputDevice(QObject, OutputDevice):
     # Signal to indicate that the configuration of one of the printers has changed.
     uniqueConfigurationsChanged = pyqtSignal()
 
-    def __init__(self, device_id: str, connection_type: "ConnectionType" = ConnectionType.Unknown, parent: QObject = None) -> None:
+    def __init__(self, device_id: str, connection_type: "ConnectionType" = ConnectionType.NotConnected, parent: QObject = None) -> None:
         super().__init__(device_id = device_id, parent = parent) # type: ignore  # MyPy complains with the multiple inheritance
 
         self._printers = []  # type: List[PrinterOutputModel]
         self._unique_configurations = []   # type: List[ConfigurationModel]
 
-        self._monitor_view_qml_path = "" #type: str
+        self._monitor_view_qml_path = ""  # type: str
-        self._monitor_component = None #type: Optional[QObject]
+        self._monitor_component = None  # type: Optional[QObject]
-        self._monitor_item = None #type: Optional[QObject]
+        self._monitor_item = None  # type: Optional[QObject]
 
-        self._control_view_qml_path = "" #type: str
+        self._control_view_qml_path = ""  # type: str
-        self._control_component = None #type: Optional[QObject]
+        self._control_component = None  # type: Optional[QObject]
-        self._control_item = None #type: Optional[QObject]
+        self._control_item = None  # type: Optional[QObject]
 
-        self._accepts_commands = False #type: bool
+        self._accepts_commands = False  # type: bool
 
-        self._update_timer = QTimer() #type: QTimer
+        self._update_timer = QTimer()  # type: QTimer
         self._update_timer.setInterval(2000)  # TODO; Add preference for update interval
         self._update_timer.setSingleShot(False)
         self._update_timer.timeout.connect(self._update)
 
-        self._connection_state = ConnectionState.Closed #type: ConnectionState
+        self._connection_state = ConnectionState.Closed  # type: ConnectionState
-        self._connection_type = connection_type
+        self._connection_type = connection_type  # type: ConnectionType
 
-        self._firmware_updater = None #type: Optional[FirmwareUpdater]
+        self._firmware_updater = None  # type: Optional[FirmwareUpdater]
-        self._firmware_name = None #type: Optional[str]
+        self._firmware_name = None  # type: Optional[str]
-        self._address = "" #type: str
+        self._address = ""  # type: str
-        self._connection_text = "" #type: str
+        self._connection_text = ""  # type: str
         self.printersChanged.connect(self._onPrintersChanged)
         QtApplication.getInstance().getOutputDeviceManager().outputDevicesChanged.connect(self._updateUniqueConfigurations)
 
@@ -130,10 +125,11 @@ class PrinterOutputDevice(QObject, OutputDevice):
             self._connection_state = connection_state
             self.connectionStateChanged.emit(self._id)
 
-    def getConnectionType(self) -> "ConnectionType":
+    @pyqtProperty(int, constant = True)
+    def connectionType(self) -> "ConnectionType":
         return self._connection_type
 
-    @pyqtProperty(str, notify = connectionStateChanged)
+    @pyqtProperty(int, notify = connectionStateChanged)
     def connectionState(self) -> "ConnectionState":
         return self._connection_state
 
@@ -147,7 +143,8 @@ class PrinterOutputDevice(QObject, OutputDevice):
 
         return None
 
-    def requestWrite(self, nodes: List["SceneNode"], file_name: Optional[str] = None, limit_mimetypes: bool = False, file_handler: Optional["FileHandler"] = None, **kwargs: str) -> None:
+    def requestWrite(self, nodes: List["SceneNode"], file_name: Optional[str] = None, limit_mimetypes: bool = False,
+                     file_handler: Optional["FileHandler"] = None, **kwargs: str) -> None:
         raise NotImplementedError("requestWrite needs to be implemented")
 
     @pyqtProperty(QObject, notify = printersChanged)
@@ -223,8 +220,10 @@ class PrinterOutputDevice(QObject, OutputDevice):
         return self._unique_configurations
 
     def _updateUniqueConfigurations(self) -> None:
-        self._unique_configurations = list(set([printer.printerConfiguration for printer in self._printers if printer.printerConfiguration is not None]))
+        self._unique_configurations = sorted(
-        self._unique_configurations.sort(key = lambda k: k.printerType)
+            {printer.printerConfiguration for printer in self._printers if printer.printerConfiguration is not None},
+            key=lambda config: config.printerType,
+        )
         self.uniqueConfigurationsChanged.emit()
 
     # Returns the unique configurations of the printers within this output device

cura/Scene/ConvexHullDecorator.py

@@ -242,7 +242,7 @@ class ConvexHullDecorator(SceneNodeDecorator):
                 # See http://stackoverflow.com/questions/16970982/find-unique-rows-in-numpy-array
                 vertex_byte_view = numpy.ascontiguousarray(vertex_data).view(
                     numpy.dtype((numpy.void, vertex_data.dtype.itemsize * vertex_data.shape[1])))
-                _, idx = numpy.unique(vertex_byte_view, return_index=True)
+                _, idx = numpy.unique(vertex_byte_view, return_index = True)
                 vertex_data = vertex_data[idx]  # Select the unique rows by index.
 
                 hull = Polygon(vertex_data)
@@ -289,16 +289,21 @@ class ConvexHullDecorator(SceneNodeDecorator):
         # Add extra margin depending on adhesion type
         adhesion_type = self._global_stack.getProperty("adhesion_type", "value")
 
+        max_length_available = 0.5 * min(
+            self._getSettingProperty("machine_width", "value"),
+            self._getSettingProperty("machine_depth", "value")
+        )
+
         if adhesion_type == "raft":
-            extra_margin = max(0, self._getSettingProperty("raft_margin", "value"))
+            extra_margin = min(max_length_available, max(0, self._getSettingProperty("raft_margin", "value")))
         elif adhesion_type == "brim":
-            extra_margin = max(0, self._getSettingProperty("brim_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value"))
+            extra_margin = min(max_length_available, max(0, self._getSettingProperty("brim_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value")))
         elif adhesion_type == "none":
             extra_margin = 0
         elif adhesion_type == "skirt":
-            extra_margin = max(
+            extra_margin = min(max_length_available, max(
                 0, self._getSettingProperty("skirt_gap", "value") +
-                   self._getSettingProperty("skirt_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value"))
+                   self._getSettingProperty("skirt_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value")))
         else:
             raise Exception("Unknown bed adhesion type. Did you forget to update the convex hull calculations for your new bed adhesion type?")
 

cura/Scene/ConvexHullNode.py

@@ -54,7 +54,7 @@ class ConvexHullNode(SceneNode):
 
             if hull_mesh_builder.addConvexPolygonExtrusion(
                 self._hull.getPoints()[::-1],  # bottom layer is reversed
-                self._mesh_height-thickness, self._mesh_height, color=self._color):
+                self._mesh_height - thickness, self._mesh_height, color = self._color):
 
                 hull_mesh = hull_mesh_builder.build()
                 self.setMeshData(hull_mesh)

cura/Settings/ExtruderManager.py

@@ -302,12 +302,7 @@ class ExtruderManager(QObject):
         global_stack = self._application.getGlobalContainerStack()
         if not global_stack:
             return []
-
+        return global_stack.extruderList
-        result_tuple_list = sorted(list(global_stack.extruders.items()), key = lambda x: int(x[0]))
-        result_list = [item[1] for item in result_tuple_list]
-
-        machine_extruder_count = global_stack.getProperty("machine_extruder_count", "value")
-        return result_list[:machine_extruder_count]
 
     def _globalContainerStackChanged(self) -> None:
         # If the global container changed, the machine changed and might have extruders that were not registered yet

cura/Settings/GlobalStack.py

@@ -97,6 +97,7 @@ class GlobalStack(CuraContainerStack):
             return
 
         self._extruders[position] = extruder
+        self.extrudersChanged.emit()
         Logger.log("i", "Extruder[%s] added to [%s] at position [%s]", extruder.id, self.id, position)
 
     ##  Overridden from ContainerStack

cura/Settings/MachineManager.py

@@ -64,8 +64,6 @@ class MachineManager(QObject):
 
         self._default_extruder_position = "0"  # to be updated when extruders are switched on and off
 
-        self.machine_extruder_material_update_dict = collections.defaultdict(list) #type: Dict[str, List[Callable[[], None]]]
-
         self._instance_container_timer = QTimer()  # type: QTimer
         self._instance_container_timer.setInterval(250)
         self._instance_container_timer.setSingleShot(True)
@@ -178,6 +176,7 @@ class MachineManager(QObject):
                 self._printer_output_devices.append(printer_output_device)
 
         self.outputDevicesChanged.emit()
+        self.printerConnectedStatusChanged.emit()
 
     @pyqtProperty(QObject, notify = currentConfigurationChanged)
     def currentConfiguration(self) -> ConfigurationModel:
@@ -275,11 +274,6 @@ class MachineManager(QObject):
                 extruder_stack.propertyChanged.connect(self._onPropertyChanged)
                 extruder_stack.containersChanged.connect(self._onContainersChanged)
 
-            if self._global_container_stack.getId() in self.machine_extruder_material_update_dict:
-                for func in self.machine_extruder_material_update_dict[self._global_container_stack.getId()]:
-                    self._application.callLater(func)
-                del self.machine_extruder_material_update_dict[self._global_container_stack.getId()]
-
         self.activeQualityGroupChanged.emit()
 
     def _onActiveExtruderStackChanged(self) -> None:
@@ -443,12 +437,12 @@ class MachineManager(QObject):
         if not self._global_container_stack:
             return False
 
-        if self._global_container_stack.getTop().findInstances():
+        if self._global_container_stack.getTop().getNumInstances() != 0:
             return True
 
         stacks = ExtruderManager.getInstance().getActiveExtruderStacks()
         for stack in stacks:
-            if stack.getTop().findInstances():
+            if stack.getTop().getNumInstances() != 0:
                 return True
 
         return False
@@ -458,10 +452,10 @@ class MachineManager(QObject):
         if not self._global_container_stack:
             return 0
         num_user_settings = 0
-        num_user_settings += len(self._global_container_stack.getTop().findInstances())
+        num_user_settings += self._global_container_stack.getTop().getNumInstances()
-        stacks = ExtruderManager.getInstance().getActiveExtruderStacks()
+        stacks = self._global_container_stack.extruderList
         for stack in stacks:
-            num_user_settings += len(stack.getTop().findInstances())
+            num_user_settings += stack.getTop().getNumInstances()
         return num_user_settings
 
     ##  Delete a user setting from the global stack and all extruder stacks.
@@ -521,16 +515,30 @@ class MachineManager(QObject):
         return ""
 
     @pyqtProperty(bool, notify = printerConnectedStatusChanged)
-    def printerConnected(self):
+    def printerConnected(self) -> bool:
         return bool(self._printer_output_devices)
 
     @pyqtProperty(bool, notify = printerConnectedStatusChanged)
     def activeMachineHasRemoteConnection(self) -> bool:
         if self._global_container_stack:
-            connection_type = self._global_container_stack.getMetaDataEntry("connection_type")
+            connection_type = int(self._global_container_stack.getMetaDataEntry("connection_type", ConnectionType.NotConnected.value))
             return connection_type in [ConnectionType.NetworkConnection.value, ConnectionType.CloudConnection.value]
         return False
 
+    @pyqtProperty(bool, notify = printerConnectedStatusChanged)
+    def activeMachineIsGroup(self) -> bool:
+        return bool(self._printer_output_devices) and len(self._printer_output_devices[0].printers) > 1
+
+    @pyqtProperty(bool, notify = printerConnectedStatusChanged)
+    def activeMachineHasActiveNetworkConnection(self) -> bool:
+        # A network connection is only available if any output device is actually a network connected device.
+        return any(d.connectionType == ConnectionType.NetworkConnection for d in self._printer_output_devices)
+
+    @pyqtProperty(bool, notify = printerConnectedStatusChanged)
+    def activeMachineHasActiveCloudConnection(self) -> bool:
+        # A cloud connection is only available if any output device actually is a cloud connected device.
+        return any(d.connectionType == ConnectionType.CloudConnection for d in self._printer_output_devices)
+
     def activeMachineNetworkKey(self) -> str:
         if self._global_container_stack:
             return self._global_container_stack.getMetaDataEntry("um_network_key", "")

cura/UltimakerCloudAuthentication.py

@@ -0,0 +1,30 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+# ---------
+# Constants used for the Cloud API
+# ---------
+DEFAULT_CLOUD_API_ROOT = "https://api.ultimaker.com"  # type: str
+DEFAULT_CLOUD_API_VERSION = "1"  # type: str
+DEFAULT_CLOUD_ACCOUNT_API_ROOT = "https://account.ultimaker.com"  # type: str
+
+try:
+    from cura.CuraVersion import CuraCloudAPIRoot  # type: ignore
+    if CuraCloudAPIRoot == "":
+        CuraCloudAPIRoot = DEFAULT_CLOUD_API_ROOT
+except ImportError:
+    CuraCloudAPIRoot = DEFAULT_CLOUD_API_ROOT
+
+try:
+    from cura.CuraVersion import CuraCloudAPIVersion  # type: ignore
+    if CuraCloudAPIVersion == "":
+        CuraCloudAPIVersion = DEFAULT_CLOUD_API_VERSION
+except ImportError:
+    CuraCloudAPIVersion = DEFAULT_CLOUD_API_VERSION
+
+try:
+    from cura.CuraVersion import CuraCloudAccountAPIRoot  # type: ignore
+    if CuraCloudAccountAPIRoot == "":
+        CuraCloudAccountAPIRoot = DEFAULT_CLOUD_ACCOUNT_API_ROOT
+except ImportError:
+    CuraCloudAccountAPIRoot = DEFAULT_CLOUD_ACCOUNT_API_ROOT

plugins/ChangeLogPlugin/ChangeLog.txt

@@ -943,7 +943,7 @@ This release adds support for printers with elliptic buildplates. This feature h
 *AppImage for Linux
 The Linux distribution is now in AppImage format, which makes Cura easier to install.
 
-*bugfixes
+*Bugfixes
 The user is now notified when a new version of Cura is available.
 When searching in the setting visibility preferences, the category for each setting is always displayed.
 3MF files are now saved and loaded correctly.

plugins/CuraDrive/__init__.py

@@ -0,0 +1,12 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from .src.DrivePluginExtension import DrivePluginExtension
+
+
+def getMetaData():
+    return {}
+
+
+def register(app):
+    return {"extension": DrivePluginExtension()}

plugins/CuraDrive/plugin.json

@@ -0,0 +1,8 @@
+{
+    "name": "Cura Backups",
+    "author": "Ultimaker B.V.",
+    "description": "Backup and restore your configuration.",
+    "version": "1.2.0",
+    "api": 6,
+    "i18n-catalog": "cura"
+}

plugins/CuraDrive/src/DriveApiService.py

@@ -0,0 +1,168 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import base64
+import hashlib
+from datetime import datetime
+from tempfile import NamedTemporaryFile
+from typing import Any, Optional, List, Dict
+
+import requests
+
+from UM.Logger import Logger
+from UM.Message import Message
+from UM.Signal import Signal, signalemitter
+from cura.CuraApplication import CuraApplication
+
+from .UploadBackupJob import UploadBackupJob
+from .Settings import Settings
+
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
+
+## The DriveApiService is responsible for interacting with the CuraDrive API and Cura's backup handling.
+@signalemitter
+class DriveApiService:
+    BACKUP_URL = "{}/backups".format(Settings.DRIVE_API_URL)
+
+    # Emit signal when restoring backup started or finished.
+    restoringStateChanged = Signal()
+
+    # Emit signal when creating backup started or finished.
+    creatingStateChanged = Signal()
+
+    def __init__(self) -> None:
+        self._cura_api = CuraApplication.getInstance().getCuraAPI()
+
+    def getBackups(self) -> List[Dict[str, Any]]:
+        access_token = self._cura_api.account.accessToken
+        if not access_token:
+            Logger.log("w", "Could not get access token.")
+            return []
+
+        backup_list_request = requests.get(self.BACKUP_URL, headers = {
+            "Authorization": "Bearer {}".format(access_token)
+        })
+
+        # HTTP status 300s mean redirection. 400s and 500s are errors.
+        # Technically 300s are not errors, but the use case here relies on "requests" to handle redirects automatically.
+        if backup_list_request.status_code >= 300:
+            Logger.log("w", "Could not get backups list from remote: %s", backup_list_request.text)
+            Message(catalog.i18nc("@info:backup_status", "There was an error listing your backups."), title = catalog.i18nc("@info:title", "Backup")).show()
+            return []
+        return backup_list_request.json()["data"]
+
+    def createBackup(self) -> None:
+        self.creatingStateChanged.emit(is_creating = True)
+
+        # Create the backup.
+        backup_zip_file, backup_meta_data = self._cura_api.backups.createBackup()
+        if not backup_zip_file or not backup_meta_data:
+            self.creatingStateChanged.emit(is_creating = False, error_message ="Could not create backup.")
+            return
+
+        # Create an upload entry for the backup.
+        timestamp = datetime.now().isoformat()
+        backup_meta_data["description"] = "{}.backup.{}.cura.zip".format(timestamp, backup_meta_data["cura_release"])
+        backup_upload_url = self._requestBackupUpload(backup_meta_data, len(backup_zip_file))
+        if not backup_upload_url:
+            self.creatingStateChanged.emit(is_creating = False, error_message ="Could not upload backup.")
+            return
+
+        # Upload the backup to storage.
+        upload_backup_job = UploadBackupJob(backup_upload_url, backup_zip_file)
+        upload_backup_job.finished.connect(self._onUploadFinished)
+        upload_backup_job.start()
+
+    def _onUploadFinished(self, job: "UploadBackupJob") -> None:
+        if job.backup_upload_error_message != "":
+            # If the job contains an error message we pass it along so the UI can display it.
+            self.creatingStateChanged.emit(is_creating = False, error_message = job.backup_upload_error_message)
+        else:
+            self.creatingStateChanged.emit(is_creating = False)
+
+    def restoreBackup(self, backup: Dict[str, Any]) -> None:
+        self.restoringStateChanged.emit(is_restoring = True)
+        download_url = backup.get("download_url")
+        if not download_url:
+            # If there is no download URL, we can't restore the backup.
+            return self._emitRestoreError()
+
+        download_package = requests.get(download_url, stream = True)
+        if download_package.status_code >= 300:
+            # Something went wrong when attempting to download the backup.
+            Logger.log("w", "Could not download backup from url %s: %s", download_url, download_package.text)
+            return self._emitRestoreError()
+
+        # We store the file in a temporary path fist to ensure integrity.
+        temporary_backup_file = NamedTemporaryFile(delete = False)
+        with open(temporary_backup_file.name, "wb") as write_backup:
+            for chunk in download_package:
+                write_backup.write(chunk)
+
+        if not self._verifyMd5Hash(temporary_backup_file.name, backup.get("md5_hash", "")):
+            # Don't restore the backup if the MD5 hashes do not match.
+            # This can happen if the download was interrupted.
+            Logger.log("w", "Remote and local MD5 hashes do not match, not restoring backup.")
+            return self._emitRestoreError()
+
+        # Tell Cura to place the backup back in the user data folder.
+        with open(temporary_backup_file.name, "rb") as read_backup:
+            self._cura_api.backups.restoreBackup(read_backup.read(), backup.get("metadata", {}))
+            self.restoringStateChanged.emit(is_restoring = False)
+
+    def _emitRestoreError(self) -> None:
+        self.restoringStateChanged.emit(is_restoring = False,
+                                        error_message = catalog.i18nc("@info:backup_status",
+                                                                         "There was an error trying to restore your backup."))
+
+    #   Verify the MD5 hash of a file.
+    #   \param file_path Full path to the file.
+    #   \param known_hash The known MD5 hash of the file.
+    #   \return: Success or not.
+    @staticmethod
+    def _verifyMd5Hash(file_path: str, known_hash: str) -> bool:
+        with open(file_path, "rb") as read_backup:
+            local_md5_hash = base64.b64encode(hashlib.md5(read_backup.read()).digest(), altchars = b"_-").decode("utf-8")
+            return known_hash == local_md5_hash
+
+    def deleteBackup(self, backup_id: str) -> bool:
+        access_token = self._cura_api.account.accessToken
+        if not access_token:
+            Logger.log("w", "Could not get access token.")
+            return False
+
+        delete_backup = requests.delete("{}/{}".format(self.BACKUP_URL, backup_id), headers = {
+            "Authorization": "Bearer {}".format(access_token)
+        })
+        if delete_backup.status_code >= 300:
+            Logger.log("w", "Could not delete backup: %s", delete_backup.text)
+            return False
+        return True
+
+    #   Request a backup upload slot from the API.
+    #   \param backup_metadata: A dict containing some meta data about the backup.
+    #   \param backup_size The size of the backup file in bytes.
+    #   \return: The upload URL for the actual backup file if successful, otherwise None.
+    def _requestBackupUpload(self, backup_metadata: Dict[str, Any], backup_size: int) -> Optional[str]:
+        access_token = self._cura_api.account.accessToken
+        if not access_token:
+            Logger.log("w", "Could not get access token.")
+            return None
+        
+        backup_upload_request = requests.put(self.BACKUP_URL, json = {
+            "data": {
+                "backup_size": backup_size,
+                "metadata": backup_metadata
+            }
+        }, headers = {
+            "Authorization": "Bearer {}".format(access_token)
+        })
+
+        # Any status code of 300 or above indicates an error.
+        if backup_upload_request.status_code >= 300:
+            Logger.log("w", "Could not request backup upload: %s", backup_upload_request.text)
+            return None
+        
+        return backup_upload_request.json()["data"]["upload_url"]

plugins/CuraDrive/src/DrivePluginExtension.py

@@ -0,0 +1,162 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import os
+from datetime import datetime
+from typing import Optional, List, Dict, Any
+
+from PyQt5.QtCore import QObject, pyqtSlot, pyqtProperty, pyqtSignal
+
+from UM.Extension import Extension
+from UM.Logger import Logger
+from UM.Message import Message
+from cura.CuraApplication import CuraApplication
+
+from .Settings import Settings
+from .DriveApiService import DriveApiService
+
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
+
+# The DivePluginExtension provides functionality to backup and restore your Cura configuration to Ultimaker's cloud.
+class DrivePluginExtension(QObject, Extension):
+
+    # Signal emitted when the list of backups changed.
+    backupsChanged = pyqtSignal()
+
+    # Signal emitted when restoring has started. Needed to prevent parallel restoring.
+    restoringStateChanged = pyqtSignal()
+
+    # Signal emitted when creating has started. Needed to prevent parallel creation of backups.
+    creatingStateChanged = pyqtSignal()
+
+    # Signal emitted when preferences changed (like auto-backup).
+    preferencesChanged = pyqtSignal()
+
+    DATE_FORMAT = "%d/%m/%Y %H:%M:%S"
+
+    def __init__(self) -> None:
+        QObject.__init__(self, None)
+        Extension.__init__(self)
+
+        # Local data caching for the UI.
+        self._drive_window = None  # type: Optional[QObject]
+        self._backups = []  # type: List[Dict[str, Any]]
+        self._is_restoring_backup = False
+        self._is_creating_backup = False
+
+        # Initialize services.
+        preferences = CuraApplication.getInstance().getPreferences()
+        self._drive_api_service = DriveApiService()
+
+        # Attach signals.
+        CuraApplication.getInstance().getCuraAPI().account.loginStateChanged.connect(self._onLoginStateChanged)
+        self._drive_api_service.restoringStateChanged.connect(self._onRestoringStateChanged)
+        self._drive_api_service.creatingStateChanged.connect(self._onCreatingStateChanged)
+
+        # Register preferences.
+        preferences.addPreference(Settings.AUTO_BACKUP_ENABLED_PREFERENCE_KEY, False)
+        preferences.addPreference(Settings.AUTO_BACKUP_LAST_DATE_PREFERENCE_KEY,
+                                  datetime.now().strftime(self.DATE_FORMAT))
+
+        # Register the menu item
+        self.addMenuItem(catalog.i18nc("@item:inmenu", "Manage backups"), self.showDriveWindow)
+
+        # Make auto-backup on boot if required.
+        CuraApplication.getInstance().engineCreatedSignal.connect(self._autoBackup)
+
+    def showDriveWindow(self) -> None:
+        if not self._drive_window:
+            plugin_dir_path = CuraApplication.getInstance().getPluginRegistry().getPluginPath("CuraDrive")
+            path = os.path.join(plugin_dir_path, "src", "qml", "main.qml")
+            self._drive_window = CuraApplication.getInstance().createQmlComponent(path, {"CuraDrive": self})
+        self.refreshBackups()
+        if self._drive_window:
+            self._drive_window.show()
+
+    def _autoBackup(self) -> None:
+        preferences = CuraApplication.getInstance().getPreferences()
+        if preferences.getValue(Settings.AUTO_BACKUP_ENABLED_PREFERENCE_KEY) and self._isLastBackupTooLongAgo():
+            self.createBackup()
+
+    def _isLastBackupTooLongAgo(self) -> bool:
+        current_date = datetime.now()
+        last_backup_date = self._getLastBackupDate()
+        date_diff = current_date - last_backup_date
+        return date_diff.days > 1
+
+    def _getLastBackupDate(self) -> "datetime":
+        preferences = CuraApplication.getInstance().getPreferences()
+        last_backup_date = preferences.getValue(Settings.AUTO_BACKUP_LAST_DATE_PREFERENCE_KEY)
+        return datetime.strptime(last_backup_date, self.DATE_FORMAT)
+
+    def _storeBackupDate(self) -> None:
+        backup_date = datetime.now().strftime(self.DATE_FORMAT)
+        preferences = CuraApplication.getInstance().getPreferences()
+        preferences.setValue(Settings.AUTO_BACKUP_LAST_DATE_PREFERENCE_KEY, backup_date)
+
+    def _onLoginStateChanged(self, logged_in: bool = False) -> None:
+        if logged_in:
+            self.refreshBackups()
+
+    def _onRestoringStateChanged(self, is_restoring: bool = False, error_message: str = None) -> None:
+        self._is_restoring_backup = is_restoring
+        self.restoringStateChanged.emit()
+        if error_message:
+            Message(error_message, title = catalog.i18nc("@info:title", "Backup")).show()
+
+    def _onCreatingStateChanged(self, is_creating: bool = False, error_message: str = None) -> None:
+        self._is_creating_backup = is_creating
+        self.creatingStateChanged.emit()
+        if error_message:
+            Message(error_message, title = catalog.i18nc("@info:title", "Backup")).show()
+        else:
+            self._storeBackupDate()
+        if not is_creating and not error_message:
+            # We've finished creating a new backup, to the list has to be updated.
+            self.refreshBackups()
+
+    @pyqtSlot(bool, name = "toggleAutoBackup")
+    def toggleAutoBackup(self, enabled: bool) -> None:
+        preferences = CuraApplication.getInstance().getPreferences()
+        preferences.setValue(Settings.AUTO_BACKUP_ENABLED_PREFERENCE_KEY, enabled)
+
+    @pyqtProperty(bool, notify = preferencesChanged)
+    def autoBackupEnabled(self) -> bool:
+        preferences = CuraApplication.getInstance().getPreferences()
+        return bool(preferences.getValue(Settings.AUTO_BACKUP_ENABLED_PREFERENCE_KEY))
+
+    @pyqtProperty("QVariantList", notify = backupsChanged)
+    def backups(self) -> List[Dict[str, Any]]:
+        return self._backups
+
+    @pyqtSlot(name = "refreshBackups")
+    def refreshBackups(self) -> None:
+        self._backups = self._drive_api_service.getBackups()
+        self.backupsChanged.emit()
+
+    @pyqtProperty(bool, notify = restoringStateChanged)
+    def isRestoringBackup(self) -> bool:
+        return self._is_restoring_backup
+
+    @pyqtProperty(bool, notify = creatingStateChanged)
+    def isCreatingBackup(self) -> bool:
+        return self._is_creating_backup
+
+    @pyqtSlot(str, name = "restoreBackup")
+    def restoreBackup(self, backup_id: str) -> None:
+        for backup in self._backups:
+            if backup.get("backup_id") == backup_id:
+                self._drive_api_service.restoreBackup(backup)
+                return
+        Logger.log("w", "Unable to find backup with the ID %s", backup_id)
+
+    @pyqtSlot(name = "createBackup")
+    def createBackup(self) -> None:
+        self._drive_api_service.createBackup()
+
+    @pyqtSlot(str, name = "deleteBackup")
+    def deleteBackup(self, backup_id: str) -> None:
+        self._drive_api_service.deleteBackup(backup_id)
+        self.refreshBackups()

plugins/CuraDrive/src/Settings.py

@@ -0,0 +1,13 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from cura import UltimakerCloudAuthentication
+
+
+class Settings:
+    # Keeps the plugin settings.
+    DRIVE_API_VERSION = 1
+    DRIVE_API_URL = "{}/cura-drive/v{}".format(UltimakerCloudAuthentication.CuraCloudAPIRoot, str(DRIVE_API_VERSION))
+
+    AUTO_BACKUP_ENABLED_PREFERENCE_KEY = "cura_drive/auto_backup_enabled"
+    AUTO_BACKUP_LAST_DATE_PREFERENCE_KEY = "cura_drive/auto_backup_date"

plugins/CuraDrive/src/UploadBackupJob.py

@@ -0,0 +1,41 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import requests
+
+from UM.Job import Job
+from UM.Logger import Logger
+from UM.Message import Message
+
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
+
+class UploadBackupJob(Job):
+    MESSAGE_TITLE = catalog.i18nc("@info:title", "Backups")
+
+    # This job is responsible for uploading the backup file to cloud storage.
+    # As it can take longer than some other tasks, we schedule this using a Cura Job.
+    def __init__(self, signed_upload_url: str, backup_zip: bytes) -> None:
+        super().__init__()
+        self._signed_upload_url = signed_upload_url
+        self._backup_zip = backup_zip
+        self._upload_success = False
+        self.backup_upload_error_message = ""
+
+    def run(self) -> None:
+        upload_message = Message(catalog.i18nc("@info:backup_status", "Uploading your backup..."), title = self.MESSAGE_TITLE, progress = -1)
+        upload_message.show()
+
+        backup_upload = requests.put(self._signed_upload_url, data = self._backup_zip)
+        upload_message.hide()
+
+        if backup_upload.status_code >= 300:
+            self.backup_upload_error_message = backup_upload.text
+            Logger.log("w", "Could not upload backup file: %s", backup_upload.text)
+            Message(catalog.i18nc("@info:backup_status", "There was an error while uploading your backup."), title = self.MESSAGE_TITLE).show()
+        else:
+            self._upload_success = True
+            Message(catalog.i18nc("@info:backup_status", "Your backup has finished uploading."), title = self.MESSAGE_TITLE).show()
+
+        self.finished.emit(self)

plugins/CuraDrive/src/qml/components/BackupList.qml

@@ -0,0 +1,39 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.2
+import QtQuick.Layouts 1.3
+
+import UM 1.1 as UM
+
+ScrollView
+{
+    property alias model: backupList.model
+    width: parent.width
+    clip: true
+    ListView
+    {
+        id: backupList
+        width: parent.width
+        delegate: Item
+        {
+            // Add a margin, otherwise the scrollbar is on top of the right most component
+            width: parent.width - UM.Theme.getSize("default_margin").width
+            height: childrenRect.height
+
+            BackupListItem
+            {
+                id: backupListItem
+                width: parent.width
+            }
+
+            Rectangle
+            {
+                id: divider
+                color: UM.Theme.getColor("lining")
+                height: UM.Theme.getSize("default_lining").height
+            }
+        }
+    }
+}

plugins/CuraDrive/src/qml/components/BackupListFooter.qml

@@ -0,0 +1,46 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+import UM 1.3 as UM
+import Cura 1.0 as Cura
+
+import "../components"
+
+RowLayout
+{
+    id: backupListFooter
+    width: parent.width
+    property bool showInfoButton: false
+
+    Cura.PrimaryButton
+    {
+        id: infoButton
+        text: catalog.i18nc("@button", "Want more?")
+        iconSource: UM.Theme.getIcon("info")
+        onClicked: Qt.openUrlExternally("https://goo.gl/forms/QACEP8pP3RV60QYG2")
+        visible: backupListFooter.showInfoButton
+    }
+
+    Cura.PrimaryButton
+    {
+        id: createBackupButton
+        text: catalog.i18nc("@button", "Backup Now")
+        iconSource: UM.Theme.getIcon("plus")
+        enabled: !CuraDrive.isCreatingBackup && !CuraDrive.isRestoringBackup
+        onClicked: CuraDrive.createBackup()
+        busy: CuraDrive.isCreatingBackup
+    }
+
+    Cura.CheckBoxWithTooltip
+    {
+        id: autoBackupEnabled
+        checked: CuraDrive.autoBackupEnabled
+        onClicked: CuraDrive.toggleAutoBackup(autoBackupEnabled.checked)
+        text: catalog.i18nc("@checkbox:description", "Auto Backup")
+        tooltip: catalog.i18nc("@checkbox:description", "Automatically create a backup each day that Cura is started.")
+    }
+}

plugins/CuraDrive/src/qml/components/BackupListItem.qml

@@ -0,0 +1,113 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+import QtQuick.Dialogs 1.1
+
+import UM 1.1 as UM
+import Cura 1.0 as Cura
+
+Item
+{
+    id: backupListItem
+    width: parent.width
+    height: showDetails ? dataRow.height + backupDetails.height : dataRow.height
+    property bool showDetails: false
+
+    // Backup details toggle animation.
+    Behavior on height
+    {
+        PropertyAnimation
+        {
+            duration: 70
+        }
+    }
+
+    RowLayout
+    {
+        id: dataRow
+        spacing: UM.Theme.getSize("wide_margin").width
+        width: parent.width
+        height: 50 * screenScaleFactor
+
+        UM.SimpleButton
+        {
+            width: UM.Theme.getSize("section_icon").width
+            height: UM.Theme.getSize("section_icon").height
+            color: UM.Theme.getColor("small_button_text")
+            hoverColor: UM.Theme.getColor("small_button_text_hover")
+            iconSource: UM.Theme.getIcon("info")
+            onClicked: backupListItem.showDetails = !backupListItem.showDetails
+        }
+
+        Label
+        {
+            text: new Date(modelData.generated_time).toLocaleString(UM.Preferences.getValue("general/language"))
+            color: UM.Theme.getColor("text")
+            elide: Text.ElideRight
+            Layout.minimumWidth: 100 * screenScaleFactor
+            Layout.maximumWidth: 500 * screenScaleFactor
+            Layout.fillWidth: true
+            font: UM.Theme.getFont("default")
+            renderType: Text.NativeRendering
+        }
+
+        Label
+        {
+            text: modelData.metadata.description
+            color: UM.Theme.getColor("text")
+            elide: Text.ElideRight
+            Layout.minimumWidth: 100 * screenScaleFactor
+            Layout.maximumWidth: 500 * screenScaleFactor
+            Layout.fillWidth: true
+            font: UM.Theme.getFont("default")
+            renderType: Text.NativeRendering
+        }
+
+        Cura.SecondaryButton
+        {
+            text: catalog.i18nc("@button", "Restore")
+            enabled: !CuraDrive.isCreatingBackup && !CuraDrive.isRestoringBackup
+            onClicked: confirmRestoreDialog.visible = true
+        }
+
+        UM.SimpleButton
+        {
+            width: UM.Theme.getSize("message_close").width
+            height: UM.Theme.getSize("message_close").height
+            color: UM.Theme.getColor("small_button_text")
+            hoverColor: UM.Theme.getColor("small_button_text_hover")
+            iconSource: UM.Theme.getIcon("cross1")
+            onClicked: confirmDeleteDialog.visible = true
+        }
+    }
+
+    BackupListItemDetails
+    {
+        id: backupDetails
+        backupDetailsData: modelData
+        width: parent.width
+        visible: parent.showDetails
+        anchors.top: dataRow.bottom
+    }
+
+    MessageDialog
+    {
+        id: confirmDeleteDialog
+        title: catalog.i18nc("@dialog:title", "Delete Backup")
+        text: catalog.i18nc("@dialog:info", "Are you sure you want to delete this backup? This cannot be undone.")
+        standardButtons: StandardButton.Yes | StandardButton.No
+        onYes: CuraDrive.deleteBackup(modelData.backup_id)
+    }
+
+    MessageDialog
+    {
+        id: confirmRestoreDialog
+        title: catalog.i18nc("@dialog:title", "Restore Backup")
+        text: catalog.i18nc("@dialog:info", "You will need to restart Cura before your backup is restored. Do you want to close Cura now?")
+        standardButtons: StandardButton.Yes | StandardButton.No
+        onYes: CuraDrive.restoreBackup(modelData.backup_id)
+    }
+}

plugins/CuraDrive/src/qml/components/BackupListItemDetails.qml

@@ -0,0 +1,63 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+import UM 1.1 as UM
+
+ColumnLayout
+{
+    id: backupDetails
+    width: parent.width
+    spacing: UM.Theme.getSize("default_margin").width
+    property var backupDetailsData
+
+    // Cura version
+    BackupListItemDetailsRow
+    {
+        iconSource: UM.Theme.getIcon("application")
+        label: catalog.i18nc("@backuplist:label", "Cura Version")
+        value: backupDetailsData.metadata.cura_release
+    }
+
+    // Machine count.
+    BackupListItemDetailsRow
+    {
+        iconSource: UM.Theme.getIcon("printer_single")
+        label: catalog.i18nc("@backuplist:label", "Machines")
+        value: backupDetailsData.metadata.machine_count
+    }
+
+    // Material count
+    BackupListItemDetailsRow
+    {
+        iconSource: UM.Theme.getIcon("category_material")
+        label: catalog.i18nc("@backuplist:label", "Materials")
+        value: backupDetailsData.metadata.material_count
+    }
+
+    // Profile count.
+    BackupListItemDetailsRow
+    {
+        iconSource: UM.Theme.getIcon("settings")
+        label: catalog.i18nc("@backuplist:label", "Profiles")
+        value: backupDetailsData.metadata.profile_count
+    }
+
+    // Plugin count.
+    BackupListItemDetailsRow
+    {
+        iconSource: UM.Theme.getIcon("plugin")
+        label: catalog.i18nc("@backuplist:label", "Plugins")
+        value: backupDetailsData.metadata.plugin_count
+    }
+
+    // Spacer.
+    Item
+    {
+        width: parent.width
+        height: UM.Theme.getSize("default_margin").height
+    }
+}

plugins/CuraDrive/src/qml/components/BackupListItemDetailsRow.qml

@@ -0,0 +1,52 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+import UM 1.3 as UM
+
+RowLayout
+{
+    id: detailsRow
+    width: parent.width
+    height: 40 * screenScaleFactor
+
+    property alias iconSource: icon.source
+    property alias label: detailName.text
+    property alias value: detailValue.text
+
+    UM.RecolorImage
+    {
+        id: icon
+        width: 18 * screenScaleFactor
+        height: width
+        source: ""
+        color: UM.Theme.getColor("text")
+    }
+
+    Label
+    {
+        id: detailName
+        color: UM.Theme.getColor("text")
+        elide: Text.ElideRight
+        Layout.minimumWidth: 50 * screenScaleFactor
+        Layout.maximumWidth: 100 * screenScaleFactor
+        Layout.fillWidth: true
+        font: UM.Theme.getFont("default")
+        renderType: Text.NativeRendering
+    }
+
+    Label
+    {
+        id: detailValue
+        color: UM.Theme.getColor("text")
+        elide: Text.ElideRight
+        Layout.minimumWidth: 50 * screenScaleFactor
+        Layout.maximumWidth: 100 * screenScaleFactor
+        Layout.fillWidth: true
+        font: UM.Theme.getFont("default")
+        renderType: Text.NativeRendering
+    }
+}

plugins/CuraDrive/src/qml/main.qml

@@ -0,0 +1,44 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Window 2.2
+
+import UM 1.3 as UM
+import Cura 1.1 as Cura
+
+import "components"
+import "pages"
+
+Window
+{
+    id: curaDriveDialog
+    minimumWidth: Math.round(UM.Theme.getSize("modal_window_minimum").width)
+    minimumHeight: Math.round(UM.Theme.getSize("modal_window_minimum").height)
+    maximumWidth: Math.round(minimumWidth * 1.2)
+    maximumHeight: Math.round(minimumHeight * 1.2)
+    width: minimumWidth
+    height: minimumHeight
+    color: UM.Theme.getColor("main_background")
+    title: catalog.i18nc("@title:window", "Cura Backups")
+
+    // Globally available.
+    UM.I18nCatalog
+    {
+        id: catalog
+        name: "cura"
+    }
+
+    WelcomePage
+    {
+        id: welcomePage
+        visible: !Cura.API.account.isLoggedIn
+    }
+
+    BackupsPage
+    {
+        id: backupsPage
+        visible: Cura.API.account.isLoggedIn
+    }
+}

plugins/CuraDrive/src/qml/pages/BackupsPage.qml

@@ -0,0 +1,75 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+import UM 1.3 as UM
+import Cura 1.1 as Cura
+
+import "../components"
+
+Item
+{
+    id: backupsPage
+    anchors.fill: parent
+    anchors.margins: UM.Theme.getSize("wide_margin").width
+
+    ColumnLayout
+    {
+        spacing: UM.Theme.getSize("wide_margin").height
+        width: parent.width
+        anchors.fill: parent
+
+        Label
+        {
+            id: backupTitle
+            text: catalog.i18nc("@title", "My Backups")
+            font: UM.Theme.getFont("large")
+            color: UM.Theme.getColor("text")
+            Layout.fillWidth: true
+            renderType: Text.NativeRendering
+        }
+
+        Label
+        {
+            text: catalog.i18nc("@empty_state",
+                "You don't have any backups currently. Use the 'Backup Now' button to create one.")
+            width: parent.width
+            font: UM.Theme.getFont("default")
+            color: UM.Theme.getColor("text")
+            wrapMode: Label.WordWrap
+            visible: backupList.model.length == 0
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            renderType: Text.NativeRendering
+        }
+
+        BackupList
+        {
+            id: backupList
+            model: CuraDrive.backups
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+        }
+
+        Label
+        {
+            text: catalog.i18nc("@backup_limit_info",
+                "During the preview phase, you'll be limited to 5 visible backups. Remove a backup to see older ones.")
+            width: parent.width
+            font: UM.Theme.getFont("default")
+            color: UM.Theme.getColor("text")
+            wrapMode: Label.WordWrap
+            visible: backupList.model.length > 4
+            renderType: Text.NativeRendering
+        }
+
+        BackupListFooter
+        {
+            id: backupListFooter
+            showInfoButton: backupList.model.length > 4
+        }
+    }
+}

plugins/CuraDrive/src/qml/pages/WelcomePage.qml

@@ -0,0 +1,56 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Window 2.2
+
+import UM 1.3 as UM
+import Cura 1.1 as Cura
+
+import "../components"
+
+
+Column
+{
+    id: welcomePage
+    spacing: UM.Theme.getSize("wide_margin").height
+    width: parent.width
+    height: childrenRect.height
+    anchors.centerIn: parent
+
+    Image
+    {
+        id: profileImage
+        fillMode: Image.PreserveAspectFit
+        source: "../images/icon.png"
+        anchors.horizontalCenter: parent.horizontalCenter
+        width: Math.round(parent.width / 4)
+    }
+
+    Label
+    {
+        id: welcomeTextLabel
+        text: catalog.i18nc("@description", "Backup and synchronize your Cura settings.")
+        width: Math.round(parent.width / 2)
+        font: UM.Theme.getFont("default")
+        color: UM.Theme.getColor("text")
+        verticalAlignment: Text.AlignVCenter
+        horizontalAlignment: Text.AlignHCenter
+        anchors.horizontalCenter: parent.horizontalCenter
+        wrapMode: Label.WordWrap
+        renderType: Text.NativeRendering
+    }
+
+    Cura.PrimaryButton
+    {
+        id: loginButton
+        width: UM.Theme.getSize("account_button").width
+        height: UM.Theme.getSize("account_button").height
+        anchors.horizontalCenter: parent.horizontalCenter
+        text: catalog.i18nc("@button", "Sign in")
+        onClicked: Cura.API.account.login()
+        fixedWidthMode: true
+    }
+}
+

plugins/CuraEngineBackend/Cura.proto

@@ -29,7 +29,7 @@ message Object
     bytes normals = 3; //An array of 3 floats.
     bytes indices = 4; //An array of ints.
     repeated Setting settings = 5; // Setting override per object, overruling the global settings.
-    string name = 6; 
+    string name = 6; //Mesh name
 }
 
 message Progress
@@ -58,6 +58,7 @@ message Polygon {
         MoveCombingType = 8;
         MoveRetractionType = 9;
         SupportInterfaceType = 10;
+        PrimeTowerType = 11;
     }
     Type type = 1; // Type of move
     bytes points = 2; // The points of the polygon, or two points if only a line segment (Currently only line segments are used)
@@ -108,8 +109,9 @@ message PrintTimeMaterialEstimates { // The print time for each feature and mate
     float time_travel = 9;
     float time_retract = 10;
     float time_support_interface = 11;
+    float time_prime_tower = 12;
 
-    repeated MaterialEstimates materialEstimates = 12; // materialEstimates data
+    repeated MaterialEstimates materialEstimates = 13; // materialEstimates data
 }
 
 message MaterialEstimates {

plugins/CuraEngineBackend/CuraEngineBackend.py

@@ -86,8 +86,8 @@ class CuraEngineBackend(QObject, Backend):
         self._layer_view_active = False #type: bool
         self._onActiveViewChanged()
 
-        self._stored_layer_data = [] #type: List[Arcus.PythonMessage]
+        self._stored_layer_data = []  # type: List[Arcus.PythonMessage]
-        self._stored_optimized_layer_data = {} #type: Dict[int, List[Arcus.PythonMessage]] # key is build plate number, then arrays are stored until they go to the ProcessSlicesLayersJob
+        self._stored_optimized_layer_data = {}  # type: Dict[int, List[Arcus.PythonMessage]] # key is build plate number, then arrays are stored until they go to the ProcessSlicesLayersJob
 
         self._scene = self._application.getController().getScene() #type: Scene
         self._scene.sceneChanged.connect(self._onSceneChanged)
@@ -151,7 +151,7 @@ class CuraEngineBackend(QObject, Backend):
         if self._multi_build_plate_model:
             self._multi_build_plate_model.activeBuildPlateChanged.connect(self._onActiveViewChanged)
 
-        self._application.globalContainerStackChanged.connect(self._onGlobalStackChanged)
+        self._application.getMachineManager().globalContainerChanged.connect(self._onGlobalStackChanged)
         self._onGlobalStackChanged()
 
         # extruder enable / disable. Actually wanted to use machine manager here, but the initialization order causes it to crash
@@ -246,7 +246,7 @@ class CuraEngineBackend(QObject, Backend):
         num_objects = self._numObjectsPerBuildPlate()
 
         self._stored_layer_data = []
-        self._stored_optimized_layer_data[build_plate_to_be_sliced] = []
+
 
         if build_plate_to_be_sliced not in num_objects or num_objects[build_plate_to_be_sliced] == 0:
             self._scene.gcode_dict[build_plate_to_be_sliced] = [] #type: ignore #Because we created this attribute above.
@@ -254,7 +254,7 @@ class CuraEngineBackend(QObject, Backend):
             if self._build_plates_to_be_sliced:
                 self.slice()
             return
-
+        self._stored_optimized_layer_data[build_plate_to_be_sliced] = []
         if self._application.getPrintInformation() and build_plate_to_be_sliced == active_build_plate:
             self._application.getPrintInformation().setToZeroPrintInformation(build_plate_to_be_sliced)
 
@@ -411,7 +411,7 @@ class CuraEngineBackend(QObject, Backend):
 
         if job.getResult() == StartJobResult.NothingToSlice:
             if self._application.platformActivity:
-                self._error_message = Message(catalog.i18nc("@info:status", "Nothing to slice because none of the models fit the build volume. Please scale or rotate models to fit."),
+                self._error_message = Message(catalog.i18nc("@info:status", "Nothing to slice because none of the models fit the build volume or are assigned to a disabled extruder. Please scale or rotate models to fit, or enable an extruder."),
                                               title = catalog.i18nc("@info:title", "Unable to slice"))
                 self._error_message.show()
                 self.setState(BackendState.Error)
@@ -821,7 +821,7 @@ class CuraEngineBackend(QObject, Backend):
                 extruder.propertyChanged.disconnect(self._onSettingChanged)
                 extruder.containersChanged.disconnect(self._onChanged)
 
-        self._global_container_stack = self._application.getGlobalContainerStack()
+        self._global_container_stack = self._application.getMachineManager().activeMachine
 
         if self._global_container_stack:
             self._global_container_stack.propertyChanged.connect(self._onSettingChanged)  # Note: Only starts slicing when the value changed.
@@ -833,7 +833,10 @@ class CuraEngineBackend(QObject, Backend):
             self._onChanged()
 
     def _onProcessLayersFinished(self, job: ProcessSlicedLayersJob) -> None:
+        if job.getBuildPlate() in self._stored_optimized_layer_data:
             del self._stored_optimized_layer_data[job.getBuildPlate()]
+        else:
+            Logger.log("w", "The optimized layer data was already deleted for buildplate %s", job.getBuildPlate())
         self._process_layers_job = None
         Logger.log("d", "See if there is more to slice(2)...")
         self._invokeSlice()

plugins/CuraEngineBackend/ProcessSlicedLayersJob.py

@@ -137,6 +137,7 @@ class ProcessSlicedLayersJob(Job):
                 extruder = polygon.extruder
 
                 line_types = numpy.fromstring(polygon.line_type, dtype="u1")  # Convert bytearray to numpy array
+
                 line_types = line_types.reshape((-1,1))
 
                 points = numpy.fromstring(polygon.points, dtype="f4")  # Convert bytearray to numpy array

plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py

@@ -1,7 +1,6 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-import os
 from PyQt5.QtCore import QUrl
 from PyQt5.QtGui import QDesktopServices
 
@@ -13,8 +12,6 @@ from UM.Logger import Logger
 from UM.i18n import i18nCatalog
 from UM.Settings.ContainerRegistry import ContainerRegistry
 
-from cura.Settings.GlobalStack import GlobalStack
-
 from .FirmwareUpdateCheckerJob import FirmwareUpdateCheckerJob
 from .FirmwareUpdateCheckerMessage import FirmwareUpdateCheckerMessage
 
@@ -53,6 +50,7 @@ class FirmwareUpdateChecker(Extension):
 
     def _onContainerAdded(self, container):
         # Only take care when a new GlobalStack was added
+        from cura.Settings.GlobalStack import GlobalStack  # otherwise circular imports
         if isinstance(container, GlobalStack):
             self.checkFirmwareVersion(container, True)
 
@@ -76,7 +74,7 @@ class FirmwareUpdateChecker(Extension):
             Logger.log("i", "No machine with name {0} in list of firmware to check.".format(container_name))
             return
 
-        self._check_job = FirmwareUpdateCheckerJob(container = container, silent = silent,
+        self._check_job = FirmwareUpdateCheckerJob(silent = silent,
                                                    machine_name = container_name, metadata = metadata,
                                                    callback = self._onActionTriggered)
         self._check_job.start()

plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py

@@ -25,15 +25,14 @@ class FirmwareUpdateCheckerJob(Job):
     ZERO_VERSION = Version(STRING_ZERO_VERSION)
     EPSILON_VERSION = Version(STRING_EPSILON_VERSION)
 
-    def __init__(self, container, silent, machine_name, metadata, callback) -> None:
+    def __init__(self, silent, machine_name, metadata, callback) -> None:
         super().__init__()
-        self._container = container
         self.silent = silent
         self._callback = callback
 
         self._machine_name = machine_name
         self._metadata = metadata
-        self._lookups = None  # type:Optional[FirmwareUpdateCheckerLookup]
+        self._lookups = FirmwareUpdateCheckerLookup(self._machine_name, self._metadata)
         self._headers = {}  # type:Dict[str, str]  # Don't set headers yet.
 
     def getUrlResponse(self, url: str) -> str:
@@ -45,7 +44,6 @@ class FirmwareUpdateCheckerJob(Job):
             result = response.read().decode("utf-8")
         except URLError:
             Logger.log("w", "Could not reach '{0}', if this URL is old, consider removal.".format(url))
-
         return result
 
     def parseVersionResponse(self, response: str) -> Version:
@@ -70,9 +68,6 @@ class FirmwareUpdateCheckerJob(Job):
         return max_version
 
     def run(self):
-        if self._lookups is None:
-            self._lookups = FirmwareUpdateCheckerLookup(self._machine_name, self._metadata)
-
         try:
             # Initialize a Preference that stores the last version checked for this printer.
             Application.getInstance().getPreferences().addPreference(
@@ -83,13 +78,10 @@ class FirmwareUpdateCheckerJob(Job):
             application_version = Application.getInstance().getVersion()
             self._headers = {"User-Agent": "%s - %s" % (application_name, application_version)}
 
-            # get machine name from the definition container
-            machine_name = self._container.definition.getName()
-
             # If it is not None, then we compare between the checked_version and the current_version
             machine_id = self._lookups.getMachineId()
             if machine_id is not None:
-                Logger.log("i", "You have a(n) {0} in the printer list. Let's check the firmware!".format(machine_name))
+                Logger.log("i", "You have a(n) {0} in the printer list. Do firmware-check.".format(self._machine_name))
 
                 current_version = self.getCurrentVersion()
 
@@ -105,18 +97,20 @@ class FirmwareUpdateCheckerJob(Job):
                 # If the checked_version is "", it's because is the first time we check firmware and in this case
                 # we will not show the notification, but we will store it for the next time
                 Application.getInstance().getPreferences().setValue(setting_key_str, current_version)
-                Logger.log("i", "Reading firmware version of %s: checked = %s - latest = %s", machine_name, checked_version, current_version)
+                Logger.log("i", "Reading firmware version of %s: checked = %s - latest = %s",
+                           self._machine_name, checked_version, current_version)
 
                 # The first time we want to store the current version, the notification will not be shown,
                 # because the new version of Cura will be release before the firmware and we don't want to
                 # notify the user when no new firmware version is available.
                 if (checked_version != "") and (checked_version != current_version):
                     Logger.log("i", "SHOWING FIRMWARE UPDATE MESSAGE")
-                    message = FirmwareUpdateCheckerMessage(machine_id, machine_name, self._lookups.getRedirectUserUrl())
+                    message = FirmwareUpdateCheckerMessage(machine_id, self._machine_name,
+                                                           self._lookups.getRedirectUserUrl())
                     message.actionTriggered.connect(self._callback)
                     message.show()
             else:
-                Logger.log("i", "No machine with name {0} in list of firmware to check.".format(machine_name))
+                Logger.log("i", "No machine with name {0} in list of firmware to check.".format(self._machine_name))
 
         except Exception as e:
             Logger.log("w", "Failed to check for new version: %s", e)

plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerLookup.py

@@ -18,7 +18,7 @@ class FirmwareUpdateCheckerLookup:
         self._machine_id = machine_json.get("id")
         self._machine_name = machine_name.lower()  # Lower in-case upper-case chars are added to the original json.
         self._check_urls = []  # type:List[str]
-        for check_url in machine_json.get("check_urls"):
+        for check_url in machine_json.get("check_urls", []):
             self._check_urls.append(check_url)
         self._redirect_user = machine_json.get("update_url")
 

plugins/FirmwareUpdateChecker/tests/TestFirmwareUpdateChecker.py

@@ -0,0 +1,62 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import pytest
+
+from unittest.mock import MagicMock
+
+from UM.Version import Version
+
+import FirmwareUpdateChecker
+
+json_data = \
+    {
+        "ned":
+            {
+                "id": 1,
+                "name": "ned",
+                "check_urls": [""],
+                "update_url": "https://ultimaker.com/en/resources/20500-upgrade-firmware",
+                "version_parser": "default"
+            },
+        "olivia":
+            {
+                "id": 3,
+                "name": "olivia",
+                "check_urls": [""],
+                "update_url": "https://ultimaker.com/en/resources/20500-upgrade-firmware",
+                "version_parser": "default"
+            },
+        "emmerson":
+            {
+                "id": 5,
+                "name": "emmerson",
+                "check_urls": [""],
+                "update_url": "https://ultimaker.com/en/resources/20500-upgrade-firmware",
+                "version_parser": "default"
+            }
+    }
+
+@pytest.mark.parametrize("name, id", [
+    ("ned"     , 1),
+    ("olivia"  , 3),
+    ("emmerson", 5),
+])
+def test_FirmwareUpdateCheckerLookup(id, name):
+    lookup = FirmwareUpdateChecker.FirmwareUpdateCheckerLookup.FirmwareUpdateCheckerLookup(name, json_data.get(name))
+
+    assert lookup.getMachineName() == name
+    assert lookup.getMachineId() == id
+    assert len(lookup.getCheckUrls()) >= 1
+    assert lookup.getRedirectUserUrl() is not None
+
+@pytest.mark.parametrize("name, version", [
+    ("ned"     , Version("5.1.2.3")),
+    ("olivia"  , Version("4.3.2.1")),
+    ("emmerson", Version("6.7.8.1")),
+])
+def test_FirmwareUpdateCheckerJob_getCurrentVersion(name, version):
+    machine_data = json_data.get(name)
+    job = FirmwareUpdateChecker.FirmwareUpdateCheckerJob.FirmwareUpdateCheckerJob(False, name, machine_data, MagicMock)
+    job.getUrlResponse = MagicMock(return_value = str(version))  # Pretend like we got a good response from the server
+    assert job.getCurrentVersion() == version

plugins/FirmwareUpdater/FirmwareUpdaterMachineAction.py

@@ -57,7 +57,7 @@ class FirmwareUpdaterMachineAction(MachineAction):
     outputDeviceCanUpdateFirmwareChanged = pyqtSignal()
     @pyqtProperty(QObject, notify = outputDeviceCanUpdateFirmwareChanged)
     def firmwareUpdater(self) -> Optional["FirmwareUpdater"]:
-        if self._active_output_device and self._active_output_device.activePrinter.getController().can_update_firmware:
+        if self._active_output_device and self._active_output_device.activePrinter and self._active_output_device.activePrinter.getController().can_update_firmware:
             self._active_firmware_updater = self._active_output_device.getFirmwareUpdater()
             return self._active_firmware_updater
 

plugins/MonitorStage/MonitorMain.qml

@@ -1,4 +1,5 @@
-// Copyright (c) 2017 Ultimaker B.V.
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
 
 import QtQuick 2.10
 import QtQuick.Controls 1.4
@@ -7,11 +8,9 @@ import UM 1.3 as UM
 import Cura 1.0 as Cura
 
 
-Item
+// We show a nice overlay on the 3D viewer when the current output device has no monitor view
+Rectangle
 {
-    // We show a nice overlay on the 3D viewer when the current output device has no monitor view
-    Rectangle
-    {
     id: viewportOverlay
 
     color: UM.Theme.getColor("viewport_overlay")
@@ -30,8 +29,6 @@ Item
     {
         anchors.fill: parent
     }
-    }
-
     Loader
     {
         id: monitorViewComponent

plugins/PostProcessingPlugin/PostProcessingPlugin.qml

@@ -61,7 +61,7 @@ UM.Dialog
                 anchors.leftMargin: base.textMargin
                 anchors.right: parent.right
                 anchors.rightMargin: base.textMargin
-                font: UM.Theme.getFont("large")
+                font: UM.Theme.getFont("large_bold")
                 elide: Text.ElideRight
             }
             ListView
@@ -289,7 +289,7 @@ UM.Dialog
 
                 elide: Text.ElideRight
                 height: 20 * screenScaleFactor
-                font: UM.Theme.getFont("large")
+                font: UM.Theme.getFont("large_bold")
                 color: UM.Theme.getColor("text")
             }
 
@@ -484,49 +484,15 @@ UM.Dialog
         onClicked: dialog.accept()
     }
 
-    Button
+    Cura.SecondaryButton
     {
         objectName: "postProcessingSaveAreaButton"
         visible: activeScriptsList.count > 0
-        height: UM.Theme.getSize("save_button_save_to_button").height
+        height: UM.Theme.getSize("action_button").height
         width: height
         tooltip: catalog.i18nc("@info:tooltip", "Change active post-processing scripts")
         onClicked: dialog.show()
-
+        iconSource: "postprocessing.svg"
-        style: ButtonStyle
+        fixedWidthMode: true
-        {
-            background: Rectangle
-            {
-                id: deviceSelectionIcon
-                border.width: UM.Theme.getSize("default_lining").width
-                border.color: !control.enabled ? UM.Theme.getColor("action_button_disabled_border") :
-                                  control.pressed ? UM.Theme.getColor("action_button_active_border") :
-                                  control.hovered ? UM.Theme.getColor("action_button_hovered_border") : UM.Theme.getColor("action_button_border")
-                color: !control.enabled ? UM.Theme.getColor("action_button_disabled") :
-                           control.pressed ? UM.Theme.getColor("action_button_active") :
-                           control.hovered ? UM.Theme.getColor("action_button_hovered") : UM.Theme.getColor("action_button")
-                Behavior on color { ColorAnimation { duration: 50; } }
-
-                anchors.left: parent.left
-                anchors.leftMargin: Math.round(UM.Theme.getSize("save_button_text_margin").width / 2)
-
-                width: parent.height
-                height: parent.height
-
-                UM.RecolorImage
-                {
-                    anchors.verticalCenter: parent.verticalCenter
-                    anchors.horizontalCenter: parent.horizontalCenter
-                    width: Math.round(parent.width / 2)
-                    height: Math.round(parent.height / 2)
-                    sourceSize.height: height
-                    color: !control.enabled ? UM.Theme.getColor("action_button_disabled_text") :
-                               control.pressed ? UM.Theme.getColor("action_button_active_text") :
-                               control.hovered ? UM.Theme.getColor("action_button_hovered_text") : UM.Theme.getColor("action_button_text")
-                    source: "postprocessing.svg"
-                }
-            }
-            label: Label { }
-        }
     }
 }

plugins/PostProcessingPlugin/scripts/ChangeAtZ.py

@@ -112,7 +112,7 @@ class ChangeAtZ(Script):
                 "e1_Change_speed":
                 {
                     "label": "Change Speed",
-                    "description": "Select if total speed (print and travel) has to be cahnged",
+                    "description": "Select if total speed (print and travel) has to be changed",
                     "type": "bool",
                     "default_value": false
                 },

plugins/SimulationView/LayerSlider.qml

@@ -163,9 +163,9 @@ Item
             id: rangleHandleLabel
 
             height: sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
-            x: parent.x + parent.width + UM.Theme.getSize("default_margin").width
+            x: parent.x - width - UM.Theme.getSize("default_margin").width
             anchors.verticalCenter: parent.verticalCenter
-            target: Qt.point(sliderRoot.width + width, y + height / 2)
+            target: Qt.point(sliderRoot.width, y + height / 2)
             visible: sliderRoot.activeHandle == parent
 
             // custom properties

plugins/SimulationView/SimulationView.py

@@ -50,7 +50,7 @@ catalog = i18nCatalog("cura")
 
 ## View used to display g-code paths.
 class SimulationView(CuraView):
-    # Must match SimulationView.qml
+    # Must match SimulationViewMenuComponent.qml
     LAYER_VIEW_TYPE_MATERIAL_TYPE = 0
     LAYER_VIEW_TYPE_LINE_TYPE = 1
     LAYER_VIEW_TYPE_FEEDRATE = 2

plugins/SimulationView/SimulationViewMainComponent.qml

@@ -71,6 +71,11 @@ Item
             target: UM.Preferences
             onPreferenceChanged:
             {
+                if (preference !== "view/only_show_top_layers" && preference !== "view/top_layer_count" && ! preference.match("layerview/"))
+                {
+                    return;
+                }
+
                 playButton.pauseSimulation()
             }
         }

plugins/SimulationView/SimulationViewMenuComponent.qml

@@ -22,6 +22,11 @@ Cura.ExpandableComponent
         target: UM.Preferences
         onPreferenceChanged:
         {
+            if (preference !== "view/only_show_top_layers" && preference !== "view/top_layer_count" && ! preference.match("layerview/"))
+            {
+                return;
+            }
+
             layerTypeCombobox.currentIndex = UM.SimulationView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type")
             layerTypeCombobox.updateLegends(layerTypeCombobox.currentIndex)
             viewSettings.extruder_opacities = UM.Preferences.getValue("layerview/extruder_opacities").split("|")
@@ -43,7 +48,7 @@ Cura.ExpandableComponent
             verticalAlignment: Text.AlignVCenter
             height: parent.height
             elide: Text.ElideRight
-            font: UM.Theme.getFont("default")
+            font: UM.Theme.getFont("medium")
             color: UM.Theme.getColor("text_medium")
             renderType: Text.NativeRendering
         }
@@ -60,7 +65,7 @@ Cura.ExpandableComponent
             }
             height: parent.height
             elide: Text.ElideRight
-            font: UM.Theme.getFont("default")
+            font: UM.Theme.getFont("medium")
             color: UM.Theme.getColor("text")
             renderType: Text.NativeRendering
         }

plugins/SimulationView/layers.shader

@@ -49,12 +49,13 @@ fragment =
             // discard movements
             discard;
         }
-        // support: 4, 5, 7, 10
+        // support: 4, 5, 7, 10, 11 (prime tower)
         if ((u_show_helpers == 0) && (
             ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
+            ((v_line_type >= 4.5) && (v_line_type <= 5.5)) ||
             ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
             ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
-            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
+            ((v_line_type >= 10.5) && (v_line_type <= 11.5))
             )) {
             discard;
         }

plugins/SimulationView/layers3d.shader

@@ -154,7 +154,7 @@ geometry41core =
         if ((u_show_travel_moves == 0) && ((v_line_type[0] == 8) || (v_line_type[0] == 9))) {
             return;
         }
-        if ((u_show_helpers == 0) && ((v_line_type[0] == 4) || (v_line_type[0] == 5) || (v_line_type[0] == 7) || (v_line_type[0] == 10))) {
+        if ((u_show_helpers == 0) && ((v_line_type[0] == 4) || (v_line_type[0] == 5) || (v_line_type[0] == 7) || (v_line_type[0] == 10) || v_line_type[0] == 11)) {
             return;
         }
         if ((u_show_skin == 0) && ((v_line_type[0] == 1) || (v_line_type[0] == 2) || (v_line_type[0] == 3))) {

plugins/SimulationView/layers_shadow.shader

@@ -45,19 +45,23 @@ fragment =
 
     void main()
     {
-        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5)) {  // actually, 8 and 9
+        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5))
+        {  // actually, 8 and 9
             // discard movements
             discard;
         }
-        // support: 4, 5, 7, 10
+        // support: 4, 5, 7, 10, 11
         if ((u_show_helpers == 0) && (
             ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
             ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
             ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
-            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
+            ((v_line_type >= 4.5) && (v_line_type <= 5.5)) ||
-            )) {
+            ((v_line_type >= 10.5) && (v_line_type <= 11.5))
+            ))
+        {
             discard;
         }
+
         // skin: 1, 2, 3
         if ((u_show_skin == 0) && (
             (v_line_type >= 0.5) && (v_line_type <= 3.5)
@@ -65,7 +69,8 @@ fragment =
             discard;
         }
         // infill:
-        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5)) {
+        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5))
+        {
             // discard movements
             discard;
         }
@@ -117,12 +122,13 @@ fragment41core =
             // discard movements
             discard;
         }
-        // helpers: 4, 5, 7, 10
+        // helpers: 4, 5, 7, 10, 11
         if ((u_show_helpers == 0) && (
             ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
             ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
             ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
-            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
+            ((v_line_type >= 4.5) && (v_line_type <= 5.5)) ||
+            ((v_line_type >= 10.5) && (v_line_type <= 11.5))
             )) {
             discard;
         }

plugins/Toolbox/resources/images/loading.svg

@@ -1 +0,0 @@
-<svg width="200px" height="200px" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid" class="lds-rolling" style="animation-play-state: running; animation-delay: 0s; background-image: none; background-position: initial initial; background-repeat: initial initial;"><circle cx="50" cy="50" fill="none" ng-attr-stroke="{{config.color}}" ng-attr-stroke-width="{{config.width}}" ng-attr-r="{{config.radius}}" ng-attr-stroke-dasharray="{{config.dasharray}}" stroke="#0CA9E3" stroke-width="13" r="43" stroke-dasharray="202.63272615654165 69.54424205218055" style="animation-play-state: running; animation-delay: 0s;"><animateTransform attributeName="transform" type="rotate" calcMode="linear" values="0 50 50;360 50 50" keyTimes="0;1" dur="1s" begin="0s" repeatCount="indefinite" style="animation-play-state: running; animation-delay: 0s;"></animateTransform></circle></svg>

plugins/Toolbox/resources/qml/SmallRatingWidget.qml

@@ -30,7 +30,7 @@ Row
         width: contentWidth
         anchors.verticalCenter: starIcon.verticalCenter
         color: starIcon.color
-        font: UM.Theme.getFont("small")
+        font: UM.Theme.getFont("default")
         renderType: Text.NativeRendering
     }
 }

plugins/Toolbox/resources/qml/Toolbox.qml

@@ -38,7 +38,7 @@ Window
         {
             id: mainView
             width: parent.width
-            z: -1
+            z: parent.z - 1
             anchors
             {
                 top: header.bottom

plugins/Toolbox/resources/qml/ToolboxAuthorPage.qml

@@ -55,7 +55,7 @@ Item
                 bottomMargin: UM.Theme.getSize("default_margin").height
             }
             text: details.name || ""
-            font: UM.Theme.getFont("large")
+            font: UM.Theme.getFont("large_bold")
             wrapMode: Text.WordWrap
             width: parent.width
             height: UM.Theme.getSize("toolbox_property_label").height

plugins/Toolbox/resources/qml/ToolboxBackColumn.qml

@@ -61,8 +61,13 @@ Item
                 id: labelStyle
                 text: control.text
                 color: control.enabled ? (control.hovered ? UM.Theme.getColor("primary") : UM.Theme.getColor("text")) : UM.Theme.getColor("text_inactive")
-                font: UM.Theme.getFont("default_bold")
+                font: UM.Theme.getFont("medium_bold")
-                horizontalAlignment: Text.AlignRight
+                horizontalAlignment: Text.AlignLeft
+                anchors
+                {
+                    left: parent.left
+                    leftMargin: UM.Theme.getSize("default_margin").width
+                }
                 width: control.width
                 renderType: Text.NativeRendering
             }

plugins/Toolbox/resources/qml/ToolboxDetailPage.qml

@@ -59,7 +59,7 @@ Item
                 leftMargin: UM.Theme.getSize("default_margin").width
             }
             text: details === null ? "" : (details.name || "")
-            font: UM.Theme.getFont("large")
+            font: UM.Theme.getFont("large_bold")
             color: UM.Theme.getColor("text")
             width: contentWidth
             height: contentHeight

plugins/Toolbox/resources/qml/ToolboxDetailTileActions.qml

@@ -91,5 +91,10 @@ Column
         target: toolbox
         onInstallChanged: installed = toolbox.isInstalled(model.id)
         onMetadataChanged: canUpdate = toolbox.canUpdate(model.id)
+        onFilterChanged:
+        {
+            installed = toolbox.isInstalled(model.id)
+            canUpdate = toolbox.canUpdate(model.id)
+        }
     }
 }

plugins/Toolbox/resources/qml/ToolboxDownloadsGrid.qml

@@ -22,7 +22,7 @@ Column
         text: gridArea.heading
         width: parent.width
         color: UM.Theme.getColor("text_medium")
-        font: UM.Theme.getFont("medium")
+        font: UM.Theme.getFont("large")
         renderType: Text.NativeRendering
     }
     Grid

plugins/Toolbox/resources/qml/ToolboxDownloadsGridTile.qml

@@ -112,7 +112,7 @@ Item
             elide: Text.ElideRight
             width: parent.width
             wrapMode: Text.WordWrap
-            color: UM.Theme.getColor("text_medium")
+            color: UM.Theme.getColor("text")
             font: UM.Theme.getFont("default")
             anchors.top: name.bottom
             anchors.bottom: rating.top

plugins/Toolbox/resources/qml/ToolboxDownloadsShowcase.qml

@@ -23,7 +23,7 @@ Rectangle
             text: catalog.i18nc("@label", "Featured")
             width: parent.width
             color: UM.Theme.getColor("text_medium")
-            font: UM.Theme.getFont("medium")
+            font: UM.Theme.getFont("large")
             renderType: Text.NativeRendering
         }
         Grid

plugins/Toolbox/resources/qml/ToolboxInstalledPage.qml

@@ -37,7 +37,7 @@ ScrollView
             width: page.width
             text: catalog.i18nc("@title:tab", "Plugins")
             color: UM.Theme.getColor("text_medium")
-            font: UM.Theme.getFont("medium")
+            font: UM.Theme.getFont("large")
             renderType: Text.NativeRendering
         }
         Rectangle

plugins/Toolbox/resources/qml/ToolboxInstalledTile.qml

@@ -30,6 +30,7 @@ Item
         CheckBox
         {
             id: disableButton
+            anchors.verticalCenter: pluginInfo.verticalCenter
             checked: isEnabled
             visible: model.type == "plugin"
             width: visible ? UM.Theme.getSize("checkbox").width : 0
@@ -49,13 +50,14 @@ Item
                 width: parent.width
                 height: Math.floor(UM.Theme.getSize("toolbox_property_label").height)
                 wrapMode: Text.WordWrap
-                font: UM.Theme.getFont("default_bold")
+                font: UM.Theme.getFont("large_bold")
                 color: pluginInfo.color
                 renderType: Text.NativeRendering
             }
             Label
             {
                 text: model.description
+                font: UM.Theme.getFont("default")
                 maximumLineCount: 3
                 elide: Text.ElideRight
                 width: parent.width
@@ -82,6 +84,7 @@ Item
                         return model.author_name
                     }
                 }
+                font: UM.Theme.getFont("medium")
                 width: parent.width
                 height: Math.floor(UM.Theme.getSize("toolbox_property_label").height)
                 wrapMode: Text.WordWrap
@@ -96,6 +99,7 @@ Item
             Label
             {
                 text: model.version
+                font: UM.Theme.getFont("default")
                 width: parent.width
                 height: UM.Theme.getSize("toolbox_property_label").height
                 color: UM.Theme.getColor("text")

plugins/Toolbox/resources/qml/ToolboxProgressButton.qml

@@ -62,17 +62,6 @@ Item
                 readyAction()
             }
         }
-    }
+        busy: active
-
-    AnimatedImage
-    {
-        id: loader
-        visible: active
-        source: visible ? "../images/loading.gif" : ""
-        width: UM.Theme.getSize("toolbox_loader").width
-        height: UM.Theme.getSize("toolbox_loader").height
-        anchors.right: button.left
-        anchors.rightMargin: UM.Theme.getSize("default_margin").width
-        anchors.verticalCenter: button.verticalCenter
     }
 }

plugins/Toolbox/src/Toolbox.py

@@ -16,7 +16,8 @@ from UM.Extension import Extension
 from UM.i18n import i18nCatalog
 from UM.Version import Version
 
-import cura
+from cura import ApplicationMetadata
+from cura import UltimakerCloudAuthentication
 from cura.CuraApplication import CuraApplication
 
 from .AuthorsModel import AuthorsModel
@@ -30,17 +31,14 @@ i18n_catalog = i18nCatalog("cura")
 
 ##  The Toolbox class is responsible of communicating with the server through the API
 class Toolbox(QObject, Extension):
-    DEFAULT_CLOUD_API_ROOT = "https://api.ultimaker.com"  # type: str
-    DEFAULT_CLOUD_API_VERSION = 1  # type: int
-
     def __init__(self, application: CuraApplication) -> None:
         super().__init__()
 
         self._application = application  # type: CuraApplication
 
-        self._sdk_version = None  # type: Optional[Union[str, int]]
+        self._sdk_version = ApplicationMetadata.CuraSDKVersion  # type: Union[str, int]
-        self._cloud_api_version = None  # type: Optional[int]
+        self._cloud_api_version = UltimakerCloudAuthentication.CuraCloudAPIVersion  # type: int
-        self._cloud_api_root = None  # type: Optional[str]
+        self._cloud_api_root = UltimakerCloudAuthentication.CuraCloudAPIRoot  # type: str
         self._api_url = None  # type: Optional[str]
 
         # Network:
@@ -182,9 +180,6 @@ class Toolbox(QObject, Extension):
     def _onAppInitialized(self) -> None:
         self._plugin_registry = self._application.getPluginRegistry()
         self._package_manager = self._application.getPackageManager()
-        self._sdk_version = self._getSDKVersion()
-        self._cloud_api_version = self._getCloudAPIVersion()
-        self._cloud_api_root = self._getCloudAPIRoot()
         self._api_url = "{cloud_api_root}/cura-packages/v{cloud_api_version}/cura/v{sdk_version}".format(
             cloud_api_root = self._cloud_api_root,
             cloud_api_version = self._cloud_api_version,
@@ -195,36 +190,6 @@ class Toolbox(QObject, Extension):
             "packages": QUrl("{base_url}/packages".format(base_url = self._api_url))
         }
 
-    # Get the API root for the packages API depending on Cura version settings.
-    def _getCloudAPIRoot(self) -> str:
-        if not hasattr(cura, "CuraVersion"):
-            return self.DEFAULT_CLOUD_API_ROOT
-        if not hasattr(cura.CuraVersion, "CuraCloudAPIRoot"): # type: ignore
-            return self.DEFAULT_CLOUD_API_ROOT
-        if not cura.CuraVersion.CuraCloudAPIRoot:  # type: ignore
-            return self.DEFAULT_CLOUD_API_ROOT
-        return cura.CuraVersion.CuraCloudAPIRoot  # type: ignore
-
-    # Get the cloud API version from CuraVersion
-    def _getCloudAPIVersion(self) -> int:
-        if not hasattr(cura, "CuraVersion"):
-            return self.DEFAULT_CLOUD_API_VERSION
-        if not hasattr(cura.CuraVersion, "CuraCloudAPIVersion"): # type: ignore
-            return self.DEFAULT_CLOUD_API_VERSION
-        if not cura.CuraVersion.CuraCloudAPIVersion:  # type: ignore
-            return self.DEFAULT_CLOUD_API_VERSION
-        return cura.CuraVersion.CuraCloudAPIVersion  # type: ignore
-
-    # Get the packages version depending on Cura version settings.
-    def _getSDKVersion(self) -> Union[int, str]:
-        if not hasattr(cura, "CuraVersion"):
-            return self._application.getAPIVersion().getMajor()
-        if not hasattr(cura.CuraVersion, "CuraSDKVersion"):  # type: ignore
-            return self._application.getAPIVersion().getMajor()
-        if not cura.CuraVersion.CuraSDKVersion:  # type: ignore
-            return self._application.getAPIVersion().getMajor()
-        return cura.CuraVersion.CuraSDKVersion  # type: ignore
-
     @pyqtSlot()
     def browsePackages(self) -> None:
         # Create the network manager:
@@ -270,12 +235,17 @@ class Toolbox(QObject, Extension):
 
     def _convertPluginMetadata(self, plugin_data: Dict[str, Any]) -> Optional[Dict[str, Any]]:
         try:
+            highest_sdk_version_supported = Version(0)
+            for supported_version in plugin_data["plugin"]["supported_sdk_versions"]:
+                if supported_version > highest_sdk_version_supported:
+                    highest_sdk_version_supported = supported_version
+
             formatted = {
                 "package_id": plugin_data["id"],
                 "package_type": "plugin",
                 "display_name": plugin_data["plugin"]["name"],
                 "package_version": plugin_data["plugin"]["version"],
-                "sdk_version": plugin_data["plugin"]["api"],
+                "sdk_version": highest_sdk_version_supported,
                 "author": {
                     "author_id": plugin_data["plugin"]["author"],
                     "display_name": plugin_data["plugin"]["author"]
@@ -679,6 +649,7 @@ class Toolbox(QObject, Extension):
                             Logger.log("w", "Received invalid JSON for %s.", response_type)
                             break
                     else:
+                        Logger.log("w", "Unable to connect with the server, we got a response code %s while trying to connect to %s", reply.attribute(QNetworkRequest.HttpStatusCodeAttribute), reply.url())
                         self.setViewPage("errored")
                         self.resetDownload()
         elif reply.operation() == QNetworkAccessManager.PutOperation:

plugins/UM3NetworkPrinting/__init__.py

@@ -1,11 +1,15 @@
 # Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
-
 from .src import DiscoverUM3Action
 from .src import UM3OutputDevicePlugin
 
+
 def getMetaData():
     return {}
 
+
 def register(app):
-    return { "output_device": UM3OutputDevicePlugin.UM3OutputDevicePlugin(), "machine_action": DiscoverUM3Action.DiscoverUM3Action()}
+    return {
+        "output_device": UM3OutputDevicePlugin.UM3OutputDevicePlugin(),
+        "machine_action": DiscoverUM3Action.DiscoverUM3Action()
+    }

plugins/UM3NetworkPrinting/resources/qml/DiscoverUM3Action.qml

@@ -223,7 +223,7 @@ Cura.MachineAction
                     width: parent.width
                     wrapMode: Text.WordWrap
                     text: base.selectedDevice ? base.selectedDevice.name : ""
-                    font: UM.Theme.getFont("large")
+                    font: UM.Theme.getFont("large_bold")
                     elide: Text.ElideRight
                     renderType: Text.NativeRendering
                 }

plugins/UM3NetworkPrinting/resources/qml/ExpandableCard.qml

@@ -15,6 +15,7 @@ Item
     id: base
 
     property bool expanded: false
+    property bool enabled: true
     property var borderWidth: 1
     property color borderColor: "#CCCCCC"
     property color headerBackgroundColor: "white"
@@ -34,7 +35,7 @@ Item
             color: borderColor
             width: borderWidth
         }
-        color: headerMouseArea.containsMouse ? headerHoverColor : headerBackgroundColor
+        color: base.enabled && headerMouseArea.containsMouse ? headerHoverColor : headerBackgroundColor
         height: childrenRect.height
         width: parent.width
         Behavior on color
@@ -50,8 +51,12 @@ Item
     {
         id: headerMouseArea
         anchors.fill: header
-        onClicked: base.expanded = !base.expanded
+        onClicked:
-        hoverEnabled: true
+        {
+            if (!base.enabled) return
+            base.expanded = !base.expanded
+        }
+        hoverEnabled: base.enabled
     }
 
     Rectangle

plugins/UM3NetworkPrinting/resources/qml/MonitorBuildplateConfiguration.qml

@@ -18,7 +18,7 @@ import UM 1.3 as UM
 Item
 {
     // The buildplate name
-    property alias buildplate: buildplateLabel.text
+    property var buildplate: null
 
     // Height is one 18px label/icon
     height: 18 * screenScaleFactor // TODO: Theme!
@@ -34,7 +34,16 @@ Item
         Item
         {
             height: parent.height
-            width: 32 * screenScaleFactor // TODO: Theme! (Should be same as extruder icon width)
+            width: 32 * screenScaleFactor // Ensure the icon is centered under the extruder icon (same width)
+            
+            Rectangle
+            {
+                anchors.centerIn: parent
+                height: parent.height
+                width: height
+                color: buildplateIcon.visible > 0 ? "transparent" : "#eeeeee" // TODO: Theme!
+                radius: Math.floor(height / 2)
+            }
 
             UM.RecolorImage
             {
@@ -44,6 +53,7 @@ Item
                 height: parent.height
                 source: "../svg/icons/buildplate.svg"
                 width: height
+                visible: buildplate
             }
         }
         
@@ -53,7 +63,8 @@ Item
             color: "#191919" // TODO: Theme!
             elide: Text.ElideRight
             font: UM.Theme.getFont("default") // 12pt, regular
-            text: ""
+            text: buildplate ? buildplate : ""
+            visible: text !== ""
 
             // FIXED-LINE-HEIGHT:
             height: 18 * screenScaleFactor // TODO: Theme!

plugins/UM3NetworkPrinting/resources/qml/MonitorCarousel.qml

@@ -14,7 +14,12 @@ Item
     property var tileWidth: 834 * screenScaleFactor // TODO: Theme!
     property var tileHeight: 216 * screenScaleFactor // TODO: Theme!
     property var tileSpacing: 60 * screenScaleFactor // TODO: Theme!
-    property var maxOffset: (OutputDevice.printers.length - 1) * (tileWidth + tileSpacing)
+
+    // Array/model of printers to populate the carousel with
+    property var printers: []
+
+    // Maximum distance the carousel can be shifted
+    property var maxOffset: (printers.length - 1) * (tileWidth + tileSpacing)
 
     height: centerSection.height
     width: maximumWidth
@@ -129,7 +134,7 @@ Item
             
             Repeater
             {
-                model: OutputDevice.printers
+                model: printers
                 MonitorPrinterCard
                 {
                     printer: modelData
@@ -151,7 +156,7 @@ Item
         width: 36 * screenScaleFactor // TODO: Theme!
         height: 72 * screenScaleFactor // TODO: Theme!
         z: 10
-        visible: currentIndex < OutputDevice.printers.length - 1
+        visible: currentIndex < printers.length - 1
         onClicked: navigateTo(currentIndex + 1)
         hoverEnabled: true
         background: Rectangle
@@ -225,9 +230,10 @@ Item
             topMargin: 36 * screenScaleFactor // TODO: Theme!
         }
         spacing: 8 * screenScaleFactor // TODO: Theme!
+        visible: printers.length > 1
         Repeater
         {
-            model: OutputDevice.printers
+            model: printers
             Button
             {
                 background: Rectangle
@@ -243,7 +249,7 @@ Item
     }
 
     function navigateTo( i ) {
-        if (i >= 0 && i < OutputDevice.printers.length)
+        if (i >= 0 && i < printers.length)
         {
             tiles.x = -1 * i * (tileWidth + tileSpacing)
             currentIndex = i

plugins/UM3NetworkPrinting/resources/qml/MonitorConfigOverrideDialog.qml

@@ -54,7 +54,7 @@ UM.Dialog
         wrapMode: Text.WordWrap
         text:
         {
-            if (!printer.activePrintJob)
+            if (!printer || !printer.activePrintJob)
             {
                 return ""
             }

plugins/UM3NetworkPrinting/resources/qml/MonitorExtruderConfiguration.qml

@@ -39,38 +39,62 @@ Item
         color: "#eeeeee" // TODO: Theme!
         position: 0
     }
-    Label
+
+    Rectangle
     {
-        id: materialLabel
+        id: materialLabelWrapper
         anchors
         {
             left: extruderIcon.right
             leftMargin: 12 * screenScaleFactor // TODO: Theme!
         }
+        color: materialLabel.visible > 0 ? "transparent" : "#eeeeee" // TODO: Theme!
+        height: 18 * screenScaleFactor // TODO: Theme!
+        width: Math.max(materialLabel.contentWidth, 60 * screenScaleFactor) // TODO: Theme!
+        radius: 2 * screenScaleFactor // TODO: Theme!
+
+        Label
+        {
+            id: materialLabel
+            
             color: "#191919" // TODO: Theme!
             elide: Text.ElideRight
             font: UM.Theme.getFont("default") // 12pt, regular
             text: ""
+            visible: text !== ""
 
             // FIXED-LINE-HEIGHT:
-        height: 18 * screenScaleFactor // TODO: Theme!
+            height: parent.height
             verticalAlignment: Text.AlignVCenter
         }
+    }
+
+    Rectangle
+    {
+        id: printCoreLabelWrapper
+        anchors
+        {
+            left: materialLabelWrapper.left
+            bottom: parent.bottom
+        }
+        color: printCoreLabel.visible > 0 ? "transparent" : "#eeeeee" // TODO: Theme!
+        height: 18 * screenScaleFactor // TODO: Theme!
+        width: Math.max(printCoreLabel.contentWidth, 36 * screenScaleFactor) // TODO: Theme!
+        radius: 2 * screenScaleFactor // TODO: Theme!
+
         Label
         {
             id: printCoreLabel
-        anchors
+            
-        {
-            left: materialLabel.left
-            bottom: parent.bottom
-        }
             color: "#191919" // TODO: Theme!
             elide: Text.ElideRight
             font: UM.Theme.getFont("default_bold") // 12pt, bold
             text: ""
+            visible: text !== ""
 
             // FIXED-LINE-HEIGHT:
-        height: 18 * screenScaleFactor // TODO: Theme!
+            height: parent.height
             verticalAlignment: Text.AlignVCenter
         }
+    }
 }

plugins/UM3NetworkPrinting/resources/qml/MonitorIconExtruder.qml

@@ -19,7 +19,7 @@ Item
     property int position: 0
 
     // The extruder icon size; NOTE: This shouldn't need to be changed
-    property int size: 32 // TODO: Theme!
+    property int size: 32 * screenScaleFactor // TODO: Theme!
 
     // THe extruder icon source; NOTE: This shouldn't need to be changed
     property string iconSource: "../svg/icons/extruder.svg"
@@ -35,26 +35,17 @@ Item
         width: size
     }
 
-    /*
-     * The label uses some "fancy" math to ensure that if you change the overall
-     * icon size, the number scales with it. That is to say, the font properties
-     * are linked to the icon size, NOT the theme. And that's intentional.
-     */
     Label
     {
         id: positionLabel
-        font
+        font: UM.Theme.getFont("small")
-        {
+        height: Math.round(size / 2)
-            pointSize: Math.round(size * 0.3125)
-            weight: Font.Bold
-        }
-        height: Math.round(size / 2) * screenScaleFactor
         horizontalAlignment: Text.AlignHCenter
         text: position + 1
         verticalAlignment: Text.AlignVCenter
-        width: Math.round(size / 2) * screenScaleFactor
+        width: Math.round(size / 2)
-        x: Math.round(size * 0.25) * screenScaleFactor
+        x: Math.round(size * 0.25)
-        y: Math.round(size * 0.15625) * screenScaleFactor
+        y: Math.round(size * 0.15625)
-        // TODO: Once 'size' is themed, screenScaleFactor won't be needed
+        visible: position >= 0
     }
 }

plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobCard.qml

@@ -26,6 +26,7 @@ Item
 
     ExpandableCard
     {
+        enabled: printJob != null
         borderColor: printJob.configurationChanges.length !== 0 ? "#f5a623" : "#CCCCCC" // TODO: Theme!
         headerItem: Row
         {
@@ -41,33 +42,57 @@ Item
                 anchors.verticalCenter: parent.verticalCenter
             }
 
+            Item
+            {
+                anchors.verticalCenter: parent.verticalCenter
+                height: 18 * screenScaleFactor // TODO: Theme!
+                width: 216 * screenScaleFactor // TODO: Theme! (Should match column size)
+                Rectangle
+                {
+                    color: "#eeeeee"
+                    width: Math.round(parent.width / 2)
+                    height: parent.height
+                    visible: !printJob
+                }
                 Label
                 {
                     text: printJob && printJob.name ? printJob.name : ""
                     color: "#374355"
                     elide: Text.ElideRight
                     font: UM.Theme.getFont("medium") // 14pt, regular
-                anchors.verticalCenter: parent.verticalCenter
+                    visible: printJob
-                width: 216 * screenScaleFactor // TODO: Theme! (Should match column size)
 
                     // FIXED-LINE-HEIGHT:
-                height: 18 * screenScaleFactor // TODO: Theme!
+                    height: parent.height
                     verticalAlignment: Text.AlignVCenter
                 }
+            }
 
+            Item
+            {
+                anchors.verticalCenter: parent.verticalCenter
+                height: 18 * screenScaleFactor // TODO: Theme!
+                width: 216 * screenScaleFactor // TODO: Theme! (Should match column size)
+                Rectangle
+                {
+                    color: "#eeeeee"
+                    width: Math.round(parent.width / 3)
+                    height: parent.height
+                    visible: !printJob
+                }
                 Label
                 {
                     text: printJob ? OutputDevice.formatDuration(printJob.timeTotal) : ""
                     color: "#374355"
                     elide: Text.ElideRight
                     font: UM.Theme.getFont("medium") // 14pt, regular
-                anchors.verticalCenter: parent.verticalCenter
+                    visible: printJob
-                width: 216 * screenScaleFactor // TODO: Theme! (Should match column size)
 
                     // FIXED-LINE-HEIGHT:
                     height: 18 * screenScaleFactor // TODO: Theme!
                     verticalAlignment: Text.AlignVCenter
                 }
+            }
 
             Item
             {
@@ -75,6 +100,14 @@ Item
                 height: 18 * screenScaleFactor // TODO: This should be childrenRect.height but QML throws warnings
                 width: childrenRect.width
 
+                Rectangle
+                {
+                    color: "#eeeeee"
+                    width: 72 * screenScaleFactor // TODO: Theme!
+                    height: parent.height
+                    visible: !printJob
+                }
+
                 Label
                 {
                     id: printerAssignmentLabel
@@ -100,7 +133,7 @@ Item
                     width: 120 * screenScaleFactor // TODO: Theme!
 
                     // FIXED-LINE-HEIGHT:
-                    height: 18 * screenScaleFactor // TODO: Theme!
+                    height: parent.height
                     verticalAlignment: Text.AlignVCenter
                 }
 
@@ -115,6 +148,7 @@ Item
                     }
                     height: childrenRect.height
                     spacing: 6 // TODO: Theme!
+                    visible: printJob
 
                     Repeater
                     {

plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobPreview.qml

@@ -16,7 +16,11 @@ Item
     width: size
     height: size
 
-    // Actual content
+    Rectangle
+    {
+        anchors.fill: parent
+        color: printJob ? "transparent" : "#eeeeee" // TODO: Theme!
+        radius: 8 // TODO: Theme!
         Image
         {
             id: previewImage
@@ -30,8 +34,9 @@ Item
                 return 1.0
             }
             source: printJob ? printJob.previewImageUrl : ""
-        visible: printJob
         }
+    }
+
 
     UM.RecolorImage
     {

plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobProgressBar.qml

@@ -34,16 +34,16 @@ Item
         {
             background: Rectangle
             {
-                color: printJob && printJob.isActive ? "#e4e4f2" : "#f3f3f9" // TODO: Theme!
+                color: "#f5f5f5" // TODO: Theme!
                 implicitHeight: visible ? 8 * screenScaleFactor : 0 // TODO: Theme!
                 implicitWidth: 180 * screenScaleFactor // TODO: Theme!
-                radius: 4 * screenScaleFactor // TODO: Theme!
+                radius: 2 * screenScaleFactor // TODO: Theme!
             }
             progress: Rectangle
             {
                 id: progressItem;
-                color: printJob && printJob.isActive ? "#0a0850" : "#9392b2" // TODO: Theme!
+                color: printJob && printJob.isActive ? "#3282ff" : "#CCCCCC" // TODO: Theme!
-                radius: 4 * screenScaleFactor // TODO: Theme!
+                radius: 2 * screenScaleFactor // TODO: Theme!
             }
         }
     }

plugins/UM3NetworkPrinting/resources/qml/MonitorPrinterCard.qml

@@ -33,16 +33,24 @@ Item
     width: 834 * screenScaleFactor // TODO: Theme!
     height: childrenRect.height
 
-    // Printer portion
     Rectangle
     {
-        id: printerInfo
+        id: background
+        anchors.fill: parent
+        color: "#FFFFFF" // TODO: Theme!
         border
         {
             color: "#CCCCCC" // TODO: Theme!
             width: borderSize // TODO: Remove once themed
         }
-        color: "white" // TODO: Theme!
+        radius: 2 * screenScaleFactor // TODO: Theme!
+    }
+
+    // Printer portion
+    Item
+    {
+        id: printerInfo
+
         width: parent.width
         height: 144 * screenScaleFactor // TODO: Theme!
 
@@ -56,15 +64,22 @@ Item
             }
             spacing: 18 * screenScaleFactor // TODO: Theme!
 
-            Image
+            Rectangle
             {
                 id: printerImage
                 width: 108 * screenScaleFactor // TODO: Theme!
                 height: 108 * screenScaleFactor // TODO: Theme!
+                color: printer ? "transparent" : "#eeeeee" // TODO: Theme!
+                radius: 8 // TODO: Theme!
+                Image
+                {
+                    anchors.fill: parent
                     fillMode: Image.PreserveAspectFit
-                source: "../png/" + printer.type + ".png"
+                    source: printer ? "../png/" + printer.type + ".png" : ""
                     mipmap: true
                 }
+            }
+            
 
             Item
             {
@@ -75,20 +90,38 @@ Item
                 width: 180 * screenScaleFactor // TODO: Theme!
                 height: printerNameLabel.height + printerFamilyPill.height + 6 * screenScaleFactor // TODO: Theme!
 
-                Label
+                Rectangle
                 {
                     id: printerNameLabel
+                    // color: "#414054" // TODO: Theme!
+                    color: printer ? "transparent" : "#eeeeee" // TODO: Theme!
+                    height: 18 * screenScaleFactor // TODO: Theme!
+                    width: parent.width
+                    radius: 2 * screenScaleFactor // TODO: Theme!
+                    
+                    Label
+                    {
                         text: printer && printer.name ? printer.name : ""
                         color: "#414054" // TODO: Theme!
                         elide: Text.ElideRight
                         font: UM.Theme.getFont("large") // 16pt, bold
                         width: parent.width
+                        visible: printer
 
                         // FIXED-LINE-HEIGHT:
-                    height: 18 * screenScaleFactor // TODO: Theme!
+                        height: parent.height
                         verticalAlignment: Text.AlignVCenter
                     }
+                }
 
+                Rectangle
+                {
+                    color: "#eeeeee" // TODO: Theme!
+                    height: 18 * screenScaleFactor // TODO: Theme!
+                    radius: 2 * screenScaleFactor // TODO: Theme!
+                    visible: !printer
+                    width: 48 * screenScaleFactor // TODO: Theme!
+                }
                 MonitorPrinterPill
                 {
                     id: printerFamilyPill
@@ -98,7 +131,7 @@ Item
                         topMargin: 6 * screenScaleFactor // TODO: Theme!
                         left: printerNameLabel.left
                     }
-                    text: printer.type
+                    text: printer ? printer.type : ""
                 }
             }
 
@@ -106,15 +139,29 @@ Item
             {
                 id: printerConfiguration
                 anchors.verticalCenter: parent.verticalCenter
-                buildplate: "Glass"
+                buildplate: printer ? "Glass" : null // 'Glass' as a default
                 configurations:
-                [
+                {
-                    base.printer.printerConfiguration.extruderConfigurations[0],
+                    var configs = []
-                    base.printer.printerConfiguration.extruderConfigurations[1]
+                    if (printer)
-                ]
+                    {
-                height: 72 * screenScaleFactor // TODO: Theme!
+                        configs.push(printer.printerConfiguration.extruderConfigurations[0])
+                        configs.push(printer.printerConfiguration.extruderConfigurations[1])
                     }
+                    else
+                    {
+                        configs.push(null, null)
                     }
+                    return configs
+                }
+                height: 72 * screenScaleFactor // TODO: Theme!te theRect's x property
+            }
+
+            // TODO: Make this work.
+            PropertyAnimation { target: printerConfiguration; property: "visible"; to: 0; loops: Animation.Infinite; duration: 500 }
+        }
+
+        
 
         PrintJobContextMenu
         {
@@ -126,10 +173,11 @@ Item
                 top: parent.top
                 topMargin: 12 * screenScaleFactor // TODO: Theme!
             }
-            printJob: printer.activePrintJob
+            printJob: printer ? printer.activePrintJob : null
             width: 36 * screenScaleFactor // TODO: Theme!
             height: 36 * screenScaleFactor // TODO: Theme!
             enabled: base.enabled
+            visible: printer
         }
         CameraButton
         {
@@ -143,10 +191,24 @@ Item
             }
             iconSource: "../svg/icons/camera.svg"
             enabled: base.enabled
+            visible: printer
         }
     }
 
 
+    // Divider
+    Rectangle
+    {
+        anchors
+        {
+            top: printJobInfo.top
+            left: printJobInfo.left
+            right: printJobInfo.right
+        }
+        height: borderSize // Remove once themed
+        color: background.border.color
+    }
+
     // Print job portion
     Rectangle
     {
@@ -158,10 +220,10 @@ Item
         }
         border
         {
-            color: printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0 ? "#f5a623" : "#CCCCCC" // TODO: Theme!
+            color: printer && printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0 ? "#f5a623" : "transparent" // TODO: Theme!
             width: borderSize // TODO: Remove once themed
         }
-        color: "white" // TODO: Theme!
+        color: "transparent" // TODO: Theme!
         height: 84 * screenScaleFactor + borderSize // TODO: Remove once themed
         width: parent.width
 
@@ -184,9 +246,12 @@ Item
                 {
                     verticalCenter: parent.verticalCenter
                 }
-                color: "#414054" // TODO: Theme!
+                color: printer ? "#414054" : "#aaaaaa" // TODO: Theme!
-                font: UM.Theme.getFont("large") // 16pt, bold
+                font: UM.Theme.getFont("large_bold") // 16pt, bold
                 text: {
+                    if (!printer) {
+                        return catalog.i18nc("@label:status", "Loading...")
+                    }
                     if (printer && printer.state == "disabled")
                     {
                         return catalog.i18nc("@label:status", "Unavailable")
@@ -215,10 +280,10 @@ Item
                 MonitorPrintJobPreview
                 {
                     anchors.centerIn: parent
-                    printJob: base.printer.activePrintJob
+                    printJob: printer ? printer.activePrintJob : null
                     size: parent.height
                 }
-                visible: printer.activePrintJob
+                visible: printer && printer.activePrintJob && !printerStatus.visible
             }
 
             Item
@@ -229,15 +294,15 @@ Item
                 }
                 width: 180 * screenScaleFactor // TODO: Theme!
                 height: printerNameLabel.height + printerFamilyPill.height + 6 * screenScaleFactor // TODO: Theme!
-                visible: printer.activePrintJob
+                visible: printer && printer.activePrintJob && !printerStatus.visible
 
                 Label
                 {
                     id: printerJobNameLabel
-                    color: printer.activePrintJob && printer.activePrintJob.isActive ? "#414054" : "#babac1" // TODO: Theme!
+                    color: printer && printer.activePrintJob && printer.activePrintJob.isActive ? "#414054" : "#babac1" // TODO: Theme!
                     elide: Text.ElideRight
                     font: UM.Theme.getFont("large") // 16pt, bold
-                    text: base.printer.activePrintJob ? base.printer.activePrintJob.name : "Untitled" // TODO: I18N
+                    text: printer && printer.activePrintJob ? printer.activePrintJob.name : "Untitled" // TODO: I18N
                     width: parent.width
 
                     // FIXED-LINE-HEIGHT:
@@ -254,10 +319,10 @@ Item
                         topMargin: 6 * screenScaleFactor // TODO: Theme!
                         left: printerJobNameLabel.left
                     }
-                    color: printer.activePrintJob && printer.activePrintJob.isActive ? "#53657d" : "#babac1" // TODO: Theme!
+                    color: printer && printer.activePrintJob && printer.activePrintJob.isActive ? "#53657d" : "#babac1" // TODO: Theme!
                     elide: Text.ElideRight
                     font: UM.Theme.getFont("default") // 12pt, regular
-                    text: printer.activePrintJob ? printer.activePrintJob.owner : "Anonymous" // TODO: I18N
+                    text: printer && printer.activePrintJob ? printer.activePrintJob.owner : "Anonymous" // TODO: I18N
                     width: parent.width
 
                     // FIXED-LINE-HEIGHT:
@@ -272,8 +337,8 @@ Item
                 {
                     verticalCenter: parent.verticalCenter
                 }
-                printJob: printer.activePrintJob
+                printJob: printer && printer.activePrintJob
-                visible: printer.activePrintJob && printer.activePrintJob.configurationChanges.length === 0
+                visible: printer && printer.activePrintJob && printer.activePrintJob.configurationChanges.length === 0 && !printerStatus.visible
             }
 
             Label
@@ -284,7 +349,7 @@ Item
                 }
                 font: UM.Theme.getFont("default")
                 text: "Requires configuration changes"
-                visible: printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0
+                visible: printer && printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0 && !printerStatus.visible
 
                 // FIXED-LINE-HEIGHT:
                 height: 18 * screenScaleFactor // TODO: Theme!
@@ -326,7 +391,7 @@ Item
             }
             implicitHeight: 32 * screenScaleFactor // TODO: Theme!
             implicitWidth: 96 * screenScaleFactor // TODO: Theme!
-            visible: printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0
+            visible: printer && printer.activePrintJob && printer.activePrintJob.configurationChanges.length > 0 && !printerStatus.visible
             onClicked: base.enabled ? overrideConfirmationDialog.open() : {}
         }
     }

plugins/UM3NetworkPrinting/resources/qml/MonitorPrinterConfiguration.qml

@@ -19,7 +19,7 @@ Item
     property alias buildplate: buildplateConfig.buildplate
 
     // Array of extracted extruder configurations
-    property var configurations: null
+    property var configurations: [null,null]
 
     // Default size, but should be stretched to fill parent
     height: 72 * parent.height
@@ -37,10 +37,10 @@ Item
 
             MonitorExtruderConfiguration
             {
-                color: modelData.activeMaterial ? modelData.activeMaterial.color : "#eeeeee" // TODO: Theme!
+                color: modelData && modelData.activeMaterial ? modelData.activeMaterial.color : "#eeeeee" // TODO: Theme!
-                material: modelData.activeMaterial ? modelData.activeMaterial.name : ""
+                material: modelData && modelData.activeMaterial ? modelData.activeMaterial.name : ""
-                position: modelData.position
+                position: modelData && typeof(modelData.position) === "number" ? modelData.position : -1 // Use negative one to create empty extruder number
-                printCore: modelData.hotendID
+                printCore: modelData ? modelData.hotendID : ""
 
                 // Keep things responsive!
                 width: Math.floor((base.width - (configurations.length - 1) * extruderConfigurationRow.spacing) / configurations.length)
@@ -53,6 +53,6 @@ Item
     {
         id: buildplateConfig
         anchors.bottom: parent.bottom
-        buildplate: "Glass" // 'Glass' as a default
+        buildplate: null
     }
 }

plugins/UM3NetworkPrinting/resources/qml/MonitorPrinterPill.qml

@@ -27,12 +27,12 @@ Item
     }
 
     implicitHeight: 18 * screenScaleFactor // TODO: Theme!
-    implicitWidth: printerNameLabel.contentWidth + 12 // TODO: Theme!
+    implicitWidth: Math.max(printerNameLabel.contentWidth + 12 * screenScaleFactor, 36 * screenScaleFactor) // TODO: Theme!
 
     Rectangle {
         id: background
         anchors.fill: parent
-        color: "#e4e4f2" // TODO: Theme!
+        color: printerNameLabel.visible ? "#e4e4f2" : "#eeeeee"// TODO: Theme!
         radius: 2 * screenScaleFactor // TODO: Theme!
     }
 
@@ -41,6 +41,7 @@ Item
         anchors.centerIn: parent
         color: "#535369" // TODO: Theme!
         text: tagText
-        font.pointSize: 10
+        font.pointSize: 10 // TODO: Theme!
+        visible: text !== ""
     }
 }

plugins/UM3NetworkPrinting/resources/qml/MonitorQueue.qml

@@ -23,7 +23,7 @@ Item
             top: parent.top
         }
         color: UM.Theme.getColor("text")
-        font: UM.Theme.getFont("large_nonbold")
+        font: UM.Theme.getFont("large")
         text: catalog.i18nc("@label", "Queued")
     }
 
@@ -42,8 +42,8 @@ Item
         {
             id: externalLinkIcon
             anchors.verticalCenter: manageQueueLabel.verticalCenter
-            color: UM.Theme.getColor("primary")
+            color: UM.Theme.getColor("text_link")
-            source: "../svg/icons/external_link.svg"
+            source: UM.Theme.getIcon("external_link")
             width: 16 * screenScaleFactor // TODO: Theme! (Y U NO USE 18 LIKE ALL OTHER ICONS?!)
             height: 16 * screenScaleFactor // TODO: Theme! (Y U NO USE 18 LIKE ALL OTHER ICONS?!)
         }
@@ -56,10 +56,11 @@ Item
                 leftMargin: 6 * screenScaleFactor // TODO: Theme!
                 verticalCenter: externalLinkIcon.verticalCenter
             }
-            color: UM.Theme.getColor("primary")
+            color: UM.Theme.getColor("text_link")
             font: UM.Theme.getFont("default") // 12pt, regular
-            linkColor: UM.Theme.getColor("primary")
+            linkColor: UM.Theme.getColor("text_link")
             text: catalog.i18nc("@label link to connect manager", "Manage queue in Cura Connect")
+            renderType: Text.NativeRendering
         }
     }
 
@@ -144,7 +145,6 @@ Item
             topMargin: 12 * screenScaleFactor // TODO: Theme!
         }
         style: UM.Theme.styles.scrollview
-        visible: OutputDevice.receivedPrintJobs
         width: parent.width
 
         ListView
@@ -160,7 +160,7 @@ Item
                 }
                 printJob: modelData
             }
-            model: OutputDevice.queuedPrintJobs
+            model: OutputDevice.receivedPrintJobs ? OutputDevice.queuedPrintJobs : [null,null]
             spacing: 6  // TODO: Theme!
         }
     }

plugins/UM3NetworkPrinting/resources/qml/MonitorStage.qml

@@ -64,8 +64,10 @@ Component
             }
             width: parent.width
             height: 264 * screenScaleFactor // TODO: Theme!
-            MonitorCarousel {
+            MonitorCarousel
+            {
                 id: carousel
+                printers: OutputDevice.receivedPrintJobs ? OutputDevice.printers : [null]
             }
         }
 

plugins/UM3NetworkPrinting/resources/qml/UM3InfoComponents.qml

@@ -90,67 +90,4 @@ Item {
             source: "DiscoverUM3Action.qml";
         }
     }
-
-    Column {
-        anchors.fill: parent;
-        objectName: "networkPrinterConnectionInfo";
-        spacing: UM.Theme.getSize("default_margin").width;
-        visible: isUM3;
-
-        Button {
-            onClicked: Cura.MachineManager.printerOutputDevices[0].requestAuthentication();
-            text: catalog.i18nc("@action:button", "Request Access");
-            tooltip: catalog.i18nc("@info:tooltip", "Send access request to the printer");
-            visible: printerConnected && !printerAcceptsCommands && !authenticationRequested;
-        }
-
-        Row {
-            anchors {
-                left: parent.left;
-                right: parent.right;
-            }
-            height: childrenRect.height;
-            spacing: UM.Theme.getSize("default_margin").width;
-            visible: printerConnected;
-
-            Column {
-                Repeater {
-                    model: CuraApplication.getExtrudersModel()
-
-                    Label {
-                        text: model.name;
-                    }
-                }
-            }
-
-            Column {
-                Repeater {
-                    id: nozzleColumn;
-                    model: hotendIds
-
-                    Label {
-                        text: nozzleColumn.model[index];
-                    }
-                }
-            }
-
-            Column {
-                Repeater {
-                    id: materialColumn;
-                    model: materialNames
-
-                    Label {
-                        text: materialColumn.model[index];
-                    }
-                }
-            }
-        }
-
-        Button {
-            onClicked: manager.loadConfigurationFromPrinter();
-            text: catalog.i18nc("@action:button", "Activate Configuration");
-            tooltip: catalog.i18nc("@info:tooltip", "Load the configuration of the printer into Cura");
-            visible: false; // printerConnected && !isClusterPrinter()
-        }
-    }
 }

plugins/UM3NetworkPrinting/src/Cloud/CloudApiClient.py

@@ -0,0 +1,166 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+import json
+from json import JSONDecodeError
+from time import time
+from typing import Callable, List, Type, TypeVar, Union, Optional, Tuple, Dict, Any, cast
+
+from PyQt5.QtCore import QUrl
+from PyQt5.QtNetwork import QNetworkRequest, QNetworkReply, QNetworkAccessManager
+
+from UM.Logger import Logger
+from cura import UltimakerCloudAuthentication
+from cura.API import Account
+from .ToolPathUploader import ToolPathUploader
+from ..Models import BaseModel
+from .Models.CloudClusterResponse import CloudClusterResponse
+from .Models.CloudError import CloudError
+from .Models.CloudClusterStatus import CloudClusterStatus
+from .Models.CloudPrintJobUploadRequest import CloudPrintJobUploadRequest
+from .Models.CloudPrintResponse import CloudPrintResponse
+from .Models.CloudPrintJobResponse import CloudPrintJobResponse
+
+
+## The generic type variable used to document the methods below.
+CloudApiClientModel = TypeVar("CloudApiClientModel", bound = BaseModel)
+
+
+## The cloud API client is responsible for handling the requests and responses from the cloud.
+#  Each method should only handle models instead of exposing Any HTTP details.
+class CloudApiClient:
+
+    # The cloud URL to use for this remote cluster.
+    ROOT_PATH = UltimakerCloudAuthentication.CuraCloudAPIRoot
+    CLUSTER_API_ROOT = "{}/connect/v1".format(ROOT_PATH)
+    CURA_API_ROOT = "{}/cura/v1".format(ROOT_PATH)
+
+    ## Initializes a new cloud API client.
+    #  \param account: The user's account object
+    #  \param on_error: The callback to be called whenever we receive errors from the server.
+    def __init__(self, account: Account, on_error: Callable[[List[CloudError]], None]) -> None:
+        super().__init__()
+        self._manager = QNetworkAccessManager()
+        self._account = account
+        self._on_error = on_error
+        self._upload = None  # type: Optional[ToolPathUploader]
+        # In order to avoid garbage collection we keep the callbacks in this list.
+        self._anti_gc_callbacks = []  # type: List[Callable[[], None]]
+
+    ## Gets the account used for the API.
+    @property
+    def account(self) -> Account:
+        return self._account
+
+    ## Retrieves all the clusters for the user that is currently logged in.
+    #  \param on_finished: The function to be called after the result is parsed.
+    def getClusters(self, on_finished: Callable[[List[CloudClusterResponse]], Any]) -> None:
+        url = "{}/clusters".format(self.CLUSTER_API_ROOT)
+        reply = self._manager.get(self._createEmptyRequest(url))
+        self._addCallback(reply, on_finished, CloudClusterResponse)
+
+    ## Retrieves the status of the given cluster.
+    #  \param cluster_id: The ID of the cluster.
+    #  \param on_finished: The function to be called after the result is parsed.
+    def getClusterStatus(self, cluster_id: str, on_finished: Callable[[CloudClusterStatus], Any]) -> None:
+        url = "{}/clusters/{}/status".format(self.CLUSTER_API_ROOT, cluster_id)
+        reply = self._manager.get(self._createEmptyRequest(url))
+        self._addCallback(reply, on_finished, CloudClusterStatus)
+
+    ## Requests the cloud to register the upload of a print job mesh.
+    #  \param request: The request object.
+    #  \param on_finished: The function to be called after the result is parsed.
+    def requestUpload(self, request: CloudPrintJobUploadRequest, on_finished: Callable[[CloudPrintJobResponse], Any]
+                      ) -> None:
+        url = "{}/jobs/upload".format(self.CURA_API_ROOT)
+        body = json.dumps({"data": request.toDict()})
+        reply = self._manager.put(self._createEmptyRequest(url), body.encode())
+        self._addCallback(reply, on_finished, CloudPrintJobResponse)
+
+    ## Uploads a print job tool path to the cloud.
+    #  \param print_job: The object received after requesting an upload with `self.requestUpload`.
+    #  \param mesh: The tool path data to be uploaded.
+    #  \param on_finished: The function to be called after the upload is successful.
+    #  \param on_progress: A function to be called during upload progress. It receives a percentage (0-100).
+    #  \param on_error: A function to be called if the upload fails.
+    def uploadToolPath(self, print_job: CloudPrintJobResponse, mesh: bytes, on_finished: Callable[[], Any],
+                       on_progress: Callable[[int], Any], on_error: Callable[[], Any]):
+        self._upload = ToolPathUploader(self._manager, print_job, mesh, on_finished, on_progress, on_error)
+        self._upload.start()
+
+    # Requests a cluster to print the given print job.
+    #  \param cluster_id: The ID of the cluster.
+    #  \param job_id: The ID of the print job.
+    #  \param on_finished: The function to be called after the result is parsed.
+    def requestPrint(self, cluster_id: str, job_id: str, on_finished: Callable[[CloudPrintResponse], Any]) -> None:
+        url = "{}/clusters/{}/print/{}".format(self.CLUSTER_API_ROOT, cluster_id, job_id)
+        reply = self._manager.post(self._createEmptyRequest(url), b"")
+        self._addCallback(reply, on_finished, CloudPrintResponse)
+
+    ##  We override _createEmptyRequest in order to add the user credentials.
+    #   \param url: The URL to request
+    #   \param content_type: The type of the body contents.
+    def _createEmptyRequest(self, path: str, content_type: Optional[str] = "application/json") -> QNetworkRequest:
+        request = QNetworkRequest(QUrl(path))
+        if content_type:
+            request.setHeader(QNetworkRequest.ContentTypeHeader, content_type)
+        if self._account.isLoggedIn:
+            request.setRawHeader(b"Authorization", "Bearer {}".format(self._account.accessToken).encode())
+        return request
+
+    ## Parses the given JSON network reply into a status code and a dictionary, handling unexpected errors as well.
+    #  \param reply: The reply from the server.
+    #  \return A tuple with a status code and a dictionary.
+    @staticmethod
+    def _parseReply(reply: QNetworkReply) -> Tuple[int, Dict[str, Any]]:
+        status_code = reply.attribute(QNetworkRequest.HttpStatusCodeAttribute)
+        try:
+            response = bytes(reply.readAll()).decode()
+            return status_code, json.loads(response)
+        except (UnicodeDecodeError, JSONDecodeError, ValueError) as err:
+            error = CloudError(code=type(err).__name__, title=str(err), http_code=str(status_code),
+                               id=str(time()), http_status="500")
+            Logger.logException("e", "Could not parse the stardust response: %s", error.toDict())
+            return status_code, {"errors": [error.toDict()]}
+
+    ## Parses the given models and calls the correct callback depending on the result.
+    #  \param response: The response from the server, after being converted to a dict.
+    #  \param on_finished: The callback in case the response is successful.
+    #  \param model_class: The type of the model to convert the response to. It may either be a single record or a list.
+    def _parseModels(self, response: Dict[str, Any],
+                     on_finished: Union[Callable[[CloudApiClientModel], Any],
+                                        Callable[[List[CloudApiClientModel]], Any]],
+                     model_class: Type[CloudApiClientModel]) -> None:
+        if "data" in response:
+            data = response["data"]
+            if isinstance(data, list):
+                results = [model_class(**c) for c in data]  # type: List[CloudApiClientModel]
+                on_finished_list = cast(Callable[[List[CloudApiClientModel]], Any], on_finished)
+                on_finished_list(results)
+            else:
+                result = model_class(**data)  # type: CloudApiClientModel
+                on_finished_item = cast(Callable[[CloudApiClientModel], Any], on_finished)
+                on_finished_item(result)
+        elif "errors" in response:
+            self._on_error([CloudError(**error) for error in response["errors"]])
+        else:
+            Logger.log("e", "Cannot find data or errors in the cloud response: %s", response)
+
+    ## Creates a callback function so that it includes the parsing of the response into the correct model.
+    #  The callback is added to the 'finished' signal of the reply.
+    #  \param reply: The reply that should be listened to.
+    #  \param on_finished: The callback in case the response is successful. Depending on the endpoint it will be either
+    #       a list or a single item.
+    #  \param model: The type of the model to convert the response to.
+    def _addCallback(self,
+                     reply: QNetworkReply,
+                     on_finished: Union[Callable[[CloudApiClientModel], Any],
+                                        Callable[[List[CloudApiClientModel]], Any]],
+                     model: Type[CloudApiClientModel],
+                     ) -> None:
+        def parse() -> None:
+            status_code, response = self._parseReply(reply)
+            self._anti_gc_callbacks.remove(parse)
+            return self._parseModels(response, on_finished, model)
+
+        self._anti_gc_callbacks.append(parse)
+        reply.finished.connect(parse)

plugins/UM3NetworkPrinting/src/Cloud/CloudOutputController.py

@@ -0,0 +1,22 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from cura.PrinterOutput.PrinterOutputController import PrinterOutputController
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from .CloudOutputDevice import CloudOutputDevice
+
+
+class CloudOutputController(PrinterOutputController):
+    def __init__(self, output_device: "CloudOutputDevice") -> None:
+        super().__init__(output_device)
+        
+        # The cloud connection only supports fetching the printer and queue status and adding a job to the queue.
+        # To let the UI know this we mark all features below as False.
+        self.can_pause = False
+        self.can_abort = False
+        self.can_pre_heat_bed = False
+        self.can_pre_heat_hotends = False
+        self.can_send_raw_gcode = False
+        self.can_control_manually = False
+        self.can_update_firmware = False

plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDevice.py

@@ -0,0 +1,424 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+import os
+
+from time import time
+from typing import Dict, List, Optional, Set, cast
+
+from PyQt5.QtCore import QObject, QUrl, pyqtProperty, pyqtSignal, pyqtSlot
+
+from UM import i18nCatalog
+from UM.Backend.Backend import BackendState
+from UM.FileHandler.FileHandler import FileHandler
+from UM.Logger import Logger
+from UM.Message import Message
+from UM.Qt.Duration import Duration, DurationFormat
+from UM.Scene.SceneNode import SceneNode
+from cura.CuraApplication import CuraApplication
+from cura.PrinterOutput.NetworkedPrinterOutputDevice import AuthState, NetworkedPrinterOutputDevice
+from cura.PrinterOutput.PrinterOutputModel import PrinterOutputModel
+from cura.PrinterOutputDevice import ConnectionType
+
+from .CloudOutputController import CloudOutputController
+from ..MeshFormatHandler import MeshFormatHandler
+from ..UM3PrintJobOutputModel import UM3PrintJobOutputModel
+from .CloudProgressMessage import CloudProgressMessage
+from .CloudApiClient import CloudApiClient
+from .Models.CloudClusterResponse import CloudClusterResponse
+from .Models.CloudClusterStatus import CloudClusterStatus
+from .Models.CloudPrintJobUploadRequest import CloudPrintJobUploadRequest
+from .Models.CloudPrintResponse import CloudPrintResponse
+from .Models.CloudPrintJobResponse import CloudPrintJobResponse
+from .Models.CloudClusterPrinterStatus import CloudClusterPrinterStatus
+from .Models.CloudClusterPrintJobStatus import CloudClusterPrintJobStatus
+from .Utils import findChanges, formatDateCompleted, formatTimeCompleted
+
+
+I18N_CATALOG = i18nCatalog("cura")
+
+
+##  The cloud output device is a network output device that works remotely but has limited functionality.
+#   Currently it only supports viewing the printer and print job status and adding a new job to the queue.
+#   As such, those methods have been implemented here.
+#   Note that this device represents a single remote cluster, not a list of multiple clusters.
+class CloudOutputDevice(NetworkedPrinterOutputDevice):
+
+    # The interval with which the remote clusters are checked
+    CHECK_CLUSTER_INTERVAL = 10.0  # seconds
+
+    # Signal triggered when the print jobs in the queue were changed.
+    printJobsChanged = pyqtSignal()
+
+    # Signal triggered when the selected printer in the UI should be changed.
+    activePrinterChanged = pyqtSignal()
+
+    # Notify can only use signals that are defined by the class that they are in, not inherited ones.
+    # Therefore we create a private signal used to trigger the printersChanged signal.
+    _clusterPrintersChanged = pyqtSignal()
+
+    ## Creates a new cloud output device
+    #  \param api_client: The client that will run the API calls
+    #  \param cluster: The device response received from the cloud API.
+    #  \param parent: The optional parent of this output device.
+    def __init__(self, api_client: CloudApiClient, cluster: CloudClusterResponse, parent: QObject = None) -> None:
+        super().__init__(device_id = cluster.cluster_id, address = "",
+                         connection_type = ConnectionType.CloudConnection, properties = {}, parent = parent)
+        self._api = api_client
+        self._cluster = cluster
+
+        self._setInterfaceElements()
+
+        self._account = api_client.account
+
+        # We use the Cura Connect monitor tab to get most functionality right away.
+        self._monitor_view_qml_path = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                                                   "../../resources/qml/MonitorStage.qml")
+
+        # Trigger the printersChanged signal when the private signal is triggered.
+        self.printersChanged.connect(self._clusterPrintersChanged)
+
+        # We keep track of which printer is visible in the monitor page.
+        self._active_printer = None  # type: Optional[PrinterOutputModel]
+
+        # Properties to populate later on with received cloud data.
+        self._print_jobs = []  # type: List[UM3PrintJobOutputModel]
+        self._number_of_extruders = 2  # All networked printers are dual-extrusion Ultimaker machines.
+
+        # We only allow a single upload at a time.
+        self._progress = CloudProgressMessage()
+
+        # Keep server string of the last generated time to avoid updating models more than once for the same response
+        self._received_printers = None  # type: Optional[List[CloudClusterPrinterStatus]]
+        self._received_print_jobs = None  # type: Optional[List[CloudClusterPrintJobStatus]]
+
+        # A set of the user's job IDs that have finished
+        self._finished_jobs = set()  # type: Set[str]
+
+        # Reference to the uploaded print job / mesh
+        self._tool_path = None  # type: Optional[bytes]
+        self._uploaded_print_job = None  # type: Optional[CloudPrintJobResponse]
+
+    ## Connects this device.
+    def connect(self) -> None:
+        if self.isConnected():
+            return
+        super().connect()
+        Logger.log("i", "Connected to cluster %s", self.key)
+        CuraApplication.getInstance().getBackend().backendStateChange.connect(self._onBackendStateChange)
+
+    ## Disconnects the device
+    def disconnect(self) -> None:
+        super().disconnect()
+        Logger.log("i", "Disconnected from cluster %s", self.key)
+        CuraApplication.getInstance().getBackend().backendStateChange.disconnect(self._onBackendStateChange)
+
+    ## Resets the print job that was uploaded to force a new upload, runs whenever the user re-slices.
+    def _onBackendStateChange(self, _: BackendState) -> None:
+        self._tool_path = None
+        self._uploaded_print_job = None
+
+    ## Gets the cluster response from which this device was created.
+    @property
+    def clusterData(self) -> CloudClusterResponse:
+        return self._cluster
+
+    ## Updates the cluster data from the cloud.
+    @clusterData.setter
+    def clusterData(self, value: CloudClusterResponse) -> None:
+        self._cluster = value
+
+    ## Checks whether the given network key is found in the cloud's host name
+    def matchesNetworkKey(self, network_key: str) -> bool:
+        # A network key looks like "ultimakersystem-aabbccdd0011._ultimaker._tcp.local."
+        # the host name should then be "ultimakersystem-aabbccdd0011"
+        return network_key.startswith(self.clusterData.host_name)
+
+    ##  Set all the interface elements and texts for this output device.
+    def _setInterfaceElements(self) -> None:
+        self.setPriority(2)  # Make sure we end up below the local networking and above 'save to file'
+        self.setName(self._id)
+        self.setShortDescription(I18N_CATALOG.i18nc("@action:button", "Print via Cloud"))
+        self.setDescription(I18N_CATALOG.i18nc("@properties:tooltip", "Print via Cloud"))
+        self.setConnectionText(I18N_CATALOG.i18nc("@info:status", "Connected via Cloud"))
+
+    ##  Called when Cura requests an output device to receive a (G-code) file.
+    def requestWrite(self, nodes: List[SceneNode], file_name: Optional[str] = None, limit_mimetypes: bool = False,
+                     file_handler: Optional[FileHandler] = None, **kwargs: str) -> None:
+
+        # Show an error message if we're already sending a job.
+        if self._progress.visible:
+            message = Message(
+                text = I18N_CATALOG.i18nc("@info:status", "Sending new jobs (temporarily) blocked, still sending the previous print job."),
+                title = I18N_CATALOG.i18nc("@info:title", "Cloud error"),
+                lifetime = 10
+            )
+            message.show()
+            return
+
+        if self._uploaded_print_job:
+            # The mesh didn't change, let's not upload it again
+            self._api.requestPrint(self.key, self._uploaded_print_job.job_id, self._onPrintUploadCompleted)
+            return
+
+        # Indicate we have started sending a job.
+        self.writeStarted.emit(self)
+
+        mesh_format = MeshFormatHandler(file_handler, self.firmwareVersion)
+        if not mesh_format.is_valid:
+            Logger.log("e", "Missing file or mesh writer!")
+            return self._onUploadError(I18N_CATALOG.i18nc("@info:status", "Could not export print job."))
+
+        mesh = mesh_format.getBytes(nodes)
+
+        self._tool_path = mesh
+        request = CloudPrintJobUploadRequest(
+            job_name = file_name or mesh_format.file_extension,
+            file_size = len(mesh),
+            content_type = mesh_format.mime_type,
+        )
+        self._api.requestUpload(request, self._onPrintJobCreated)
+
+    ##  Called when the network data should be updated.
+    def _update(self) -> None:
+        super()._update()
+        if self._last_request_time and time() - self._last_request_time < self.CHECK_CLUSTER_INTERVAL:
+            return  # Avoid calling the cloud too often
+
+        Logger.log("d", "Updating: %s - %s >= %s", time(), self._last_request_time, self.CHECK_CLUSTER_INTERVAL)
+        if self._account.isLoggedIn:
+            self.setAuthenticationState(AuthState.Authenticated)
+            self._last_request_time = time()
+            self._api.getClusterStatus(self.key, self._onStatusCallFinished)
+        else:
+            self.setAuthenticationState(AuthState.NotAuthenticated)
+
+    ##  Method called when HTTP request to status endpoint is finished.
+    #   Contains both printers and print jobs statuses in a single response.
+    def _onStatusCallFinished(self, status: CloudClusterStatus) -> None:
+        # Update all data from the cluster.
+        self._last_response_time = time()
+        if self._received_printers != status.printers:
+            self._received_printers = status.printers
+            self._updatePrinters(status.printers)
+
+        if status.print_jobs != self._received_print_jobs:
+            self._received_print_jobs = status.print_jobs
+            self._updatePrintJobs(status.print_jobs)
+
+    ## Updates the local list of printers with the list received from the cloud.
+    #  \param jobs: The printers received from the cloud.
+    def _updatePrinters(self, printers: List[CloudClusterPrinterStatus]) -> None:
+        previous = {p.key: p for p in self._printers}  # type: Dict[str, PrinterOutputModel]
+        received = {p.uuid: p for p in printers}  # type: Dict[str, CloudClusterPrinterStatus]
+
+        removed_printers, added_printers, updated_printers = findChanges(previous, received)
+
+        for removed_printer in removed_printers:
+            if self._active_printer == removed_printer:
+                self.setActivePrinter(None)
+            self._printers.remove(removed_printer)
+
+        for added_printer in added_printers:
+            self._printers.append(added_printer.createOutputModel(CloudOutputController(self)))
+
+        for model, printer in updated_printers:
+            printer.updateOutputModel(model)
+
+        # Always have an active printer
+        if self._printers and not self._active_printer:
+            self.setActivePrinter(self._printers[0])
+
+        if added_printers or removed_printers:
+            self.printersChanged.emit()
+
+    ## Updates the local list of print jobs with the list received from the cloud.
+    #  \param jobs: The print jobs received from the cloud.
+    def _updatePrintJobs(self, jobs: List[CloudClusterPrintJobStatus]) -> None:
+        received = {j.uuid: j for j in jobs}  # type: Dict[str, CloudClusterPrintJobStatus]
+        previous = {j.key: j for j in self._print_jobs}  # type: Dict[str, UM3PrintJobOutputModel]
+
+        removed_jobs, added_jobs, updated_jobs = findChanges(previous, received)
+
+        for removed_job in removed_jobs:
+            if removed_job.assignedPrinter:
+                removed_job.assignedPrinter.updateActivePrintJob(None)
+                removed_job.stateChanged.disconnect(self._onPrintJobStateChanged)
+            self._print_jobs.remove(removed_job)
+
+        for added_job in added_jobs:
+            self._addPrintJob(added_job)
+
+        for model, job in updated_jobs:
+            job.updateOutputModel(model)
+            if job.printer_uuid:
+                self._updateAssignedPrinter(model, job.printer_uuid)
+
+        # We only have to update when jobs are added or removed
+        # updated jobs push their changes via their output model
+        if added_jobs or removed_jobs:
+            self.printJobsChanged.emit()
+
+    ## Registers a new print job received via the cloud API.
+    #  \param job: The print job received.
+    def _addPrintJob(self, job: CloudClusterPrintJobStatus) -> None:
+        model = job.createOutputModel(CloudOutputController(self))
+        model.stateChanged.connect(self._onPrintJobStateChanged)
+        if job.printer_uuid:
+            self._updateAssignedPrinter(model, job.printer_uuid)
+        self._print_jobs.append(model)
+
+    ## Handles the event of a change in a print job state
+    def _onPrintJobStateChanged(self) -> None:
+        user_name = self._getUserName()
+        # TODO: confirm that notifications in Cura are still required
+        for job in self._print_jobs:
+            if job.state == "wait_cleanup" and job.key not in self._finished_jobs and job.owner == user_name:
+                self._finished_jobs.add(job.key)
+                Message(
+                    title = I18N_CATALOG.i18nc("@info:status", "Print finished"),
+                    text = (I18N_CATALOG.i18nc("@info:status", "Printer '{printer_name}' has finished printing '{job_name}'.").format(
+                        printer_name = job.assignedPrinter.name,
+                        job_name = job.name
+                    ) if job.assignedPrinter else
+                            I18N_CATALOG.i18nc("@info:status", "The print job '{job_name}' was finished.").format(
+                                job_name = job.name
+                            )),
+                ).show()
+
+    ## Updates the printer assignment for the given print job model.
+    def _updateAssignedPrinter(self, model: UM3PrintJobOutputModel, printer_uuid: str) -> None:
+        printer = next((p for p in self._printers if printer_uuid == p.key), None)
+        if not printer:
+            Logger.log("w", "Missing printer %s for job %s in %s", model.assignedPrinter, model.key,
+                            [p.key for p in self._printers])
+            return
+
+        printer.updateActivePrintJob(model)
+        model.updateAssignedPrinter(printer)
+
+    ## Uploads the mesh when the print job was registered with the cloud API.
+    #  \param job_response: The response received from the cloud API.
+    def _onPrintJobCreated(self, job_response: CloudPrintJobResponse) -> None:
+        self._progress.show()
+        self._uploaded_print_job = job_response
+        tool_path = cast(bytes, self._tool_path)
+        self._api.uploadToolPath(job_response, tool_path, self._onPrintJobUploaded, self._progress.update, self._onUploadError)
+
+    ## Requests the print to be sent to the printer when we finished uploading the mesh.
+    def _onPrintJobUploaded(self) -> None:
+        self._progress.update(100)
+        print_job = cast(CloudPrintJobResponse, self._uploaded_print_job)
+        self._api.requestPrint(self.key, print_job.job_id, self._onPrintUploadCompleted)
+
+    ## Displays the given message if uploading the mesh has failed
+    #  \param message: The message to display.
+    def _onUploadError(self, message: str = None) -> None:
+        self._progress.hide()
+        self._uploaded_print_job = None
+        Message(
+            text = message or I18N_CATALOG.i18nc("@info:text", "Could not upload the data to the printer."),
+            title = I18N_CATALOG.i18nc("@info:title", "Cloud error"),
+            lifetime = 10
+        ).show()
+        self.writeError.emit()
+
+    ## Shows a message when the upload has succeeded
+    #  \param response: The response from the cloud API.
+    def _onPrintUploadCompleted(self, response: CloudPrintResponse) -> None:
+        Logger.log("d", "The cluster will be printing this print job with the ID %s", response.cluster_job_id)
+        self._progress.hide()
+        Message(
+            text = I18N_CATALOG.i18nc("@info:status", "Print job was successfully sent to the printer."),
+            title = I18N_CATALOG.i18nc("@info:title", "Data Sent"),
+            lifetime = 5
+        ).show()
+        self.writeFinished.emit()
+
+    ##  Gets the remote printers.
+    @pyqtProperty("QVariantList", notify=_clusterPrintersChanged)
+    def printers(self) -> List[PrinterOutputModel]:
+        return self._printers
+
+    ##  Get the active printer in the UI (monitor page).
+    @pyqtProperty(QObject, notify = activePrinterChanged)
+    def activePrinter(self) -> Optional[PrinterOutputModel]:
+        return self._active_printer
+
+    ## Set the active printer in the UI (monitor page).
+    @pyqtSlot(QObject)
+    def setActivePrinter(self, printer: Optional[PrinterOutputModel] = None) -> None:
+        if printer != self._active_printer:
+            self._active_printer = printer
+            self.activePrinterChanged.emit()
+
+    @pyqtProperty(int, notify = _clusterPrintersChanged)
+    def clusterSize(self) -> int:
+        return len(self._printers)
+
+    ##  Get remote print jobs.
+    @pyqtProperty("QVariantList", notify = printJobsChanged)
+    def printJobs(self) -> List[UM3PrintJobOutputModel]:
+        return self._print_jobs
+
+    ##  Get remote print jobs that are still in the print queue.
+    @pyqtProperty("QVariantList", notify = printJobsChanged)
+    def queuedPrintJobs(self) -> List[UM3PrintJobOutputModel]:
+        return [print_job for print_job in self._print_jobs
+                if print_job.state == "queued" or print_job.state == "error"]
+
+    ##  Get remote print jobs that are assigned to a printer.
+    @pyqtProperty("QVariantList", notify = printJobsChanged)
+    def activePrintJobs(self) -> List[UM3PrintJobOutputModel]:
+        return [print_job for print_job in self._print_jobs if
+                print_job.assignedPrinter is not None and print_job.state != "queued"]
+
+    @pyqtSlot(int, result = str)
+    def formatDuration(self, seconds: int) -> str:
+        return Duration(seconds).getDisplayString(DurationFormat.Format.Short)
+
+    @pyqtSlot(int, result = str)
+    def getTimeCompleted(self, time_remaining: int) -> str:
+        return formatTimeCompleted(time_remaining)
+
+    @pyqtSlot(int, result = str)
+    def getDateCompleted(self, time_remaining: int) -> str:
+        return formatDateCompleted(time_remaining)
+
+    ##  TODO: The following methods are required by the monitor page QML, but are not actually available using cloud.
+    #   TODO: We fake the methods here to not break the monitor page.
+
+    @pyqtProperty(QUrl, notify = _clusterPrintersChanged)
+    def activeCameraUrl(self) -> "QUrl":
+        return QUrl()
+
+    @pyqtSlot(QUrl)
+    def setActiveCameraUrl(self, camera_url: "QUrl") -> None:
+        pass
+
+    @pyqtProperty(bool, notify = printJobsChanged)
+    def receivedPrintJobs(self) -> bool:
+        return bool(self._print_jobs)
+
+    @pyqtSlot()
+    def openPrintJobControlPanel(self) -> None:
+        pass
+
+    @pyqtSlot()
+    def openPrinterControlPanel(self) -> None:
+        pass
+
+    @pyqtSlot(str)
+    def sendJobToTop(self, print_job_uuid: str) -> None:
+        pass
+
+    @pyqtSlot(str)
+    def deleteJobFromQueue(self, print_job_uuid: str) -> None:
+        pass
+
+    @pyqtSlot(str)
+    def forceSendJob(self, print_job_uuid: str) -> None:
+        pass
+
+    @pyqtProperty("QVariantList", notify = _clusterPrintersChanged)
+    def connectedPrintersTypeCount(self) -> List[Dict[str, str]]:
+        return []

plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py

@@ -0,0 +1,170 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from typing import Dict, List
+
+from PyQt5.QtCore import QTimer
+
+from UM import i18nCatalog
+from UM.Logger import Logger
+from UM.Message import Message
+from cura.API import Account
+from cura.CuraApplication import CuraApplication
+from cura.Settings.GlobalStack import GlobalStack
+from .CloudApiClient import CloudApiClient
+from .CloudOutputDevice import CloudOutputDevice
+from .Models.CloudClusterResponse import CloudClusterResponse
+from .Models.CloudError import CloudError
+from .Utils import findChanges
+
+
+##  The cloud output device manager is responsible for using the Ultimaker Cloud APIs to manage remote clusters.
+#   Keeping all cloud related logic in this class instead of the UM3OutputDevicePlugin results in more readable code.
+#
+#   API spec is available on https://api.ultimaker.com/docs/connect/spec/.
+#
+class CloudOutputDeviceManager:
+    META_CLUSTER_ID = "um_cloud_cluster_id"
+
+    # The interval with which the remote clusters are checked
+    CHECK_CLUSTER_INTERVAL = 30.0  # seconds
+
+    # The translation catalog for this device.
+    I18N_CATALOG = i18nCatalog("cura")
+
+    def __init__(self) -> None:
+        # Persistent dict containing the remote clusters for the authenticated user.
+        self._remote_clusters = {}  # type: Dict[str, CloudOutputDevice]
+
+        application = CuraApplication.getInstance()
+        self._output_device_manager = application.getOutputDeviceManager()
+
+        self._account = application.getCuraAPI().account  # type: Account
+        self._api = CloudApiClient(self._account, self._onApiError)
+
+        # Create a timer to update the remote cluster list
+        self._update_timer = QTimer()
+        self._update_timer.setInterval(int(self.CHECK_CLUSTER_INTERVAL * 1000))
+        self._update_timer.setSingleShot(False)
+
+        self._running = False
+
+    #  Called when the uses logs in or out
+    def _onLoginStateChanged(self, is_logged_in: bool) -> None:
+        Logger.log("d", "Log in state changed to %s", is_logged_in)
+        if is_logged_in:
+            if not self._update_timer.isActive():
+                self._update_timer.start()
+            self._getRemoteClusters()
+        else:
+            if self._update_timer.isActive():
+                self._update_timer.stop()
+
+            # Notify that all clusters have disappeared
+            self._onGetRemoteClustersFinished([])
+
+    ##  Gets all remote clusters from the API.
+    def _getRemoteClusters(self) -> None:
+        Logger.log("d", "Retrieving remote clusters")
+        self._api.getClusters(self._onGetRemoteClustersFinished)
+
+    ##  Callback for when the request for getting the clusters. is finished.
+    def _onGetRemoteClustersFinished(self, clusters: List[CloudClusterResponse]) -> None:
+        online_clusters = {c.cluster_id: c for c in clusters if c.is_online}  # type: Dict[str, CloudClusterResponse]
+
+        removed_devices, added_clusters, updates = findChanges(self._remote_clusters, online_clusters)
+
+        Logger.log("d", "Parsed remote clusters to %s", [cluster.toDict() for cluster in online_clusters.values()])
+        Logger.log("d", "Removed: %s, added: %s, updates: %s", len(removed_devices), len(added_clusters), len(updates))
+
+        # Remove output devices that are gone
+        for removed_cluster in removed_devices:
+            if removed_cluster.isConnected():
+                removed_cluster.disconnect()
+            removed_cluster.close()
+            self._output_device_manager.removeOutputDevice(removed_cluster.key)
+            del self._remote_clusters[removed_cluster.key]
+
+        # Add an output device for each new remote cluster.
+        # We only add when is_online as we don't want the option in the drop down if the cluster is not online.
+        for added_cluster in added_clusters:
+            device = CloudOutputDevice(self._api, added_cluster)
+            self._remote_clusters[added_cluster.cluster_id] = device
+
+        for device, cluster in updates:
+            device.clusterData = cluster
+
+        self._connectToActiveMachine()
+
+    ##  Callback for when the active machine was changed by the user or a new remote cluster was found.
+    def _connectToActiveMachine(self) -> None:
+        active_machine = CuraApplication.getInstance().getGlobalContainerStack()
+        if not active_machine:
+            return
+
+        # Remove all output devices that we have registered.
+        # This is needed because when we switch machines we can only leave
+        # output devices that are meant for that machine.
+        for stored_cluster_id in self._remote_clusters:
+            self._output_device_manager.removeOutputDevice(stored_cluster_id)
+
+        # Check if the stored cluster_id for the active machine is in our list of remote clusters.
+        stored_cluster_id = active_machine.getMetaDataEntry(self.META_CLUSTER_ID)
+        if stored_cluster_id in self._remote_clusters:
+            device = self._remote_clusters[stored_cluster_id]
+            self._connectToOutputDevice(device)
+            Logger.log("d", "Device connected by metadata cluster ID %s", stored_cluster_id)
+        else:
+            self._connectByNetworkKey(active_machine)
+
+    ## Tries to match the local network key to the cloud cluster host name.
+    def _connectByNetworkKey(self, active_machine: GlobalStack) -> None:
+        # Check if the active printer has a local network connection and match this key to the remote cluster.
+        local_network_key = active_machine.getMetaDataEntry("um_network_key")
+        if not local_network_key:
+            return
+
+        device = next((c for c in self._remote_clusters.values() if c.matchesNetworkKey(local_network_key)), None)
+        if not device:
+            return
+
+        Logger.log("i", "Found cluster %s with network key %s", device, local_network_key)
+        active_machine.setMetaDataEntry(self.META_CLUSTER_ID, device.key)
+        self._connectToOutputDevice(device)
+
+    ## Connects to an output device and makes sure it is registered in the output device manager.
+    def _connectToOutputDevice(self, device: CloudOutputDevice) -> None:
+        device.connect()
+        self._output_device_manager.addOutputDevice(device)
+
+    ## Handles an API error received from the cloud.
+    #  \param errors: The errors received
+    def _onApiError(self, errors: List[CloudError] = None) -> None:
+        Logger.log("w", str(errors))
+        message = Message(
+            text = self.I18N_CATALOG.i18nc("@info:description", "There was an error connecting to the cloud."),
+            title = self.I18N_CATALOG.i18nc("@info:title", "Error"),
+            lifetime = 10
+        )
+        message.show()
+
+    ## Starts running the cloud output device manager, thus periodically requesting cloud data.
+    def start(self):
+        if self._running:
+            return
+        application = CuraApplication.getInstance()
+        self._account.loginStateChanged.connect(self._onLoginStateChanged)
+        # When switching machines we check if we have to activate a remote cluster.
+        application.globalContainerStackChanged.connect(self._connectToActiveMachine)
+        self._update_timer.timeout.connect(self._getRemoteClusters)
+        self._onLoginStateChanged(is_logged_in = self._account.isLoggedIn)
+
+    ## Stops running the cloud output device manager.
+    def stop(self):
+        if not self._running:
+            return
+        application = CuraApplication.getInstance()
+        self._account.loginStateChanged.disconnect(self._onLoginStateChanged)
+        # When switching machines we check if we have to activate a remote cluster.
+        application.globalContainerStackChanged.disconnect(self._connectToActiveMachine)
+        self._update_timer.timeout.disconnect(self._getRemoteClusters)
+        self._onLoginStateChanged(is_logged_in = False)

plugins/UM3NetworkPrinting/src/Cloud/CloudProgressMessage.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from UM import i18nCatalog
+from UM.Message import Message
+
+
+I18N_CATALOG = i18nCatalog("cura")
+
+
+## Class responsible for showing a progress message while a mesh is being uploaded to the cloud.
+class CloudProgressMessage(Message):
+    def __init__(self):
+        super().__init__(
+            text = I18N_CATALOG.i18nc("@info:status", "Sending data to remote cluster"),
+            title = I18N_CATALOG.i18nc("@info:status", "Sending data to remote cluster"),
+            progress = -1,
+            lifetime = 0,
+            dismissable = False,
+            use_inactivity_timer = False
+        )
+
+    ## Shows the progress message.
+    def show(self):
+        self.setProgress(0)
+        super().show()
+
+    ## Updates the percentage of the uploaded.
+    #  \param percentage: The percentage amount (0-100).
+    def update(self, percentage: int) -> None:
+        if not self._visible:
+            super().show()
+        self.setProgress(percentage)

plugins/UM3NetworkPrinting/src/Cloud/Models/BaseCloudModel.py

@@ -0,0 +1,55 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from datetime import datetime, timezone
+from typing import Dict, Union, TypeVar, Type, List, Any
+
+from ...Models import BaseModel
+
+
+## Base class for the models used in the interface with the Ultimaker cloud APIs.
+class BaseCloudModel(BaseModel):
+    ## Checks whether the two models are equal.
+    #  \param other: The other model.
+    #  \return True if they are equal, False if they are different.
+    def __eq__(self, other):
+        return type(self) == type(other) and self.toDict() == other.toDict()
+
+    ## Checks whether the two models are different.
+    #  \param other: The other model.
+    #  \return True if they are different, False if they are the same.
+    def __ne__(self, other) -> bool:
+        return type(self) != type(other) or self.toDict() != other.toDict()
+
+    ## Converts the model into a serializable dictionary
+    def toDict(self) -> Dict[str, Any]:
+        return self.__dict__
+
+    # Type variable used in the parse methods below, which should be a subclass of BaseModel.
+    T = TypeVar("T", bound=BaseModel)
+
+    ## Parses a single model.
+    #  \param model_class: The model class.
+    #  \param values: The value of the model, which is usually a dictionary, but may also be already parsed.
+    #  \return An instance of the model_class given.
+    @staticmethod
+    def parseModel(model_class: Type[T], values: Union[T, Dict[str, Any]]) -> T:
+        if isinstance(values, dict):
+            return model_class(**values)
+        return values
+
+    ## Parses a list of models.
+    #  \param model_class: The model class.
+    #  \param values: The value of the list. Each value is usually a dictionary, but may also be already parsed.
+    #  \return A list of instances of the model_class given.
+    @classmethod
+    def parseModels(cls, model_class: Type[T], values: List[Union[T, Dict[str, Any]]]) -> List[T]:
+        return [cls.parseModel(model_class, value) for value in values]
+
+    ## Parses the given date string.
+    #  \param date: The date to parse.
+    #  \return The parsed date.
+    @staticmethod
+    def parseDate(date: Union[str, datetime]) -> datetime:
+        if isinstance(date, datetime):
+            return date
+        return datetime.strptime(date, "%Y-%m-%dT%H:%M:%S.%fZ").replace(tzinfo=timezone.utc)

plugins/UM3NetworkPrinting/src/Cloud/Models/CloudClusterBuildPlate.py

@@ -0,0 +1,13 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from .BaseCloudModel import BaseCloudModel
+
+
+##  Class representing a cluster printer
+#  Spec: https://api-staging.ultimaker.com/connect/v1/spec
+class CloudClusterBuildPlate(BaseCloudModel):
+    ## Create a new build plate
+    #  \param type: The type of buildplate glass or aluminium
+    def __init__(self, type: str = "glass", **kwargs) -> None:
+        self.type = type
+        super().__init__(**kwargs)