Changes to USB printer manager so its usable by other qml files

plugins/USBPrinting/USBPrinterManager.py

@@ -10,6 +10,7 @@ from UM.Resources import Resources
 from UM.Logger import Logger
 from UM.PluginRegistry import PluginRegistry
 from UM.OutputDevice.OutputDevicePlugin import OutputDevicePlugin
+from UM.Qt.ListModel import ListModel
 
 import threading
 import platform
@@ -35,6 +36,7 @@ class USBPrinterManager(QObject, SignalEmitter, OutputDevicePlugin, Extension):
         Extension.__init__(self)
         self._serial_port_list = []
         self._printer_connections = {}
+        self._printer_connections_model = None
         self._update_thread = threading.Thread(target = self._updateThread)
         self._update_thread.setDaemon(True)
 
@@ -49,6 +51,7 @@ class USBPrinterManager(QObject, SignalEmitter, OutputDevicePlugin, Extension):
         self.addConnectionSignal.connect(self.addConnection) #Because the model needs to be created in the same thread as the QMLEngine, we use a signal.
 
     addConnectionSignal = Signal()
+    printerConnectionStateChanged = pyqtSignal()
 
     def start(self):
         self._check_updates = True
@@ -88,11 +91,28 @@ class USBPrinterManager(QObject, SignalEmitter, OutputDevicePlugin, Extension):
             except FileNotFoundError:
                 continue
 
+    @pyqtSlot(str, result = bool)
     def updateFirmwareBySerial(self, serial_port):
-        printer_connection = self.getConnectionByPort(serial_port)
-        if printer_connection is not None:
-            self.spawnFirmwareInterface(printer_connection.getSerialPort())
-            printer_connection.updateFirmware(Resources.getPath(Resources.FirmwareLocation, self._getDefaultFirmwareName()))
+        print("OMG ZOMG: ", serial_port)
+        if serial_port in self._printer_connections:
+            self.spawnFirmwareInterface(self._printer_connections[serial_port].getSerialPort())
+            try:
+                self._printer_connections[serial_port].updateFirmware(Resources.getPath(Resources.FirmwareLocation, self._getDefaultFirmwareName()))
+            except FileNotFoundError:
+                self._firmware_view.close()
+                Logger.log("e", "Could not find firmware required for this machine")
+                return False
+            return True
+        return False
+
+    ##  Return the singleton instance of the USBPrinterManager
+    @classmethod
+    def getInstance(cls, engine = None, script_engine = None):
+        # Note: Explicit use of class name to prevent issues with inheritance.
+        if USBPrinterManager._instance is None:
+            USBPrinterManager._instance = cls()
+
+        return USBPrinterManager._instance
 
     def _getDefaultFirmwareName(self):
         machine_type = Application.getInstance().getActiveMachine().getTypeID()
@@ -136,10 +156,23 @@ class USBPrinterManager(QObject, SignalEmitter, OutputDevicePlugin, Extension):
         self._printer_connections[serial_port] = connection
 
     def _onPrinterConnectionStateChanged(self, serial_port):
+        print("On state changed: ", self)
         if self._printer_connections[serial_port].isConnected():
             self.getOutputDeviceManager().addOutputDevice(self._printer_connections[serial_port])
         else:
             self.getOutputDeviceManager().removeOutputDevice(serial_port)
+        self.printerConnectionStateChanged.emit()
+
+    @pyqtProperty(QObject , notify = printerConnectionStateChanged)
+    def connectedPrinterList(self):
+        print("ConnectedPrinterList: ", self)
+        self._printer_connections_model  = ListModel()
+        self._printer_connections_model.addRoleName(Qt.UserRole + 1,"name")
+        self._printer_connections_model.addRoleName(Qt.UserRole + 2, "printer")
+        for connection in self._printer_connections:
+            if self._printer_connections[connection].isConnected():
+                self._printer_connections_model.appendItem({"name":connection, "printer": self._printer_connections[connection]})
+        return self._printer_connections_model
 
     ##  Create a list of serial ports on the system.
     #   \param only_list_usb If true, only usb ports are listed
@@ -164,3 +197,5 @@ class USBPrinterManager(QObject, SignalEmitter, OutputDevicePlugin, Extension):
             else:
                 base_list = base_list + glob.glob("/dev/ttyUSB*") + glob.glob("/dev/ttyACM*") + glob.glob("/dev/cu.*") + glob.glob("/dev/tty.usb*") + glob.glob("/dev/rfcomm*") + glob.glob("/dev/serial/by-id/*")
         return list(base_list)
+
+    _instance = None

plugins/USBPrinting/__init__.py

@@ -2,7 +2,7 @@
 # Cura is released under the terms of the AGPLv3 or higher.
 
 from . import USBPrinterManager
-
+from PyQt5.QtQml import qmlRegisterType, qmlRegisterSingletonType
 from UM.i18n import i18nCatalog
 i18n_catalog = i18nCatalog("cura")
 
@@ -19,4 +19,5 @@ def getMetaData():
     }
 
 def register(app):
-    return {"extension":USBPrinterManager.USBPrinterManager(),"output_device": USBPrinterManager.USBPrinterManager() }
+    qmlRegisterSingletonType(USBPrinterManager.USBPrinterManager, "UM", 1, 0, "USBPrinterManager", USBPrinterManager.USBPrinterManager.getInstance)
+    return {"extension":USBPrinterManager.USBPrinterManager.getInstance(),"output_device": USBPrinterManager.USBPrinterManager.getInstance() }

resources/qml/WizardPages/AddMachine.qml

@@ -252,6 +252,10 @@ ColumnLayout
             UM.Models.availableMachinesModel.createMachine(machineList.currentIndex, machineName.text)
             var pages = UM.Models.availableMachinesModel.getItem(machineList.currentIndex).pages
             var old_page_count = elementRoot.getPageCount()
+            for(var i = 0; i < UM.Models.count; i++)
+            {
+                print(UM.Models.getItem(i))
+            }
             // Delete old pages (if any)
             for (var i = old_page_count - 1; i >  0; i--)
             {

resources/qml/WizardPages/UpgradeFirmware.qml

@@ -13,13 +13,12 @@ Column
     id: wizardPage
     property string title
     anchors.fill: parent;
-
     Label
     {
         text: parent.title
         font.pointSize: 18;
     }
-
+    Component.onCompleted: console.log(UM.USBPrinterManager.connectedPrinterList.count)
     Label
     {
         //: Add Printer wizard page description
@@ -33,14 +32,26 @@ Column
         ListView
         {
             id: machineList;
-            model: UM.Models.availableMachinesModel
-            delegate: RadioButton
+            model: UM.USBPrinterManager.connectedPrinterList
+
+            delegate:Row
             {
-                exclusiveGroup: printerGroup;
-                text: model.name;
+                id: derp
+                Text
+                {
+                    id: text_area
+                    text: model.name
+                }
+                Button
+                {
+                    text: "Update";
                     onClicked:
                     {
-                    ListView.view.currentIndex = index;
+                        if(!UM.USBPrinterManager.updateFirmwareBySerial(text_area.text))
+                        {
+                            status_text.text = "ERROR"
+                        }
+                    }
                 }
             }
         }
@@ -48,15 +59,10 @@ Column
 
     Label
     {
-        //: Add Printer wizard field label
-        text: qsTr("Printer Name:");
+        id: status_text
+        text: ""
     }
 
-    TextField
-    {
-        id: machineName; Layout.fillWidth: true; text: machineList.model.getItem(machineList.currentIndex).name
-
-    }
 
     Item
     {
@@ -64,8 +70,5 @@ Column
         Layout.fillHeight: true;
     }
 
-    ExclusiveGroup
-    {
-        id: printerGroup;
-    }
+
 }