Some fixes and cleanup for the network plugin

plugins/UM3NetworkPrinting/src/Messages/PrintJobUploadProgressMessage.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2019 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 PrintJobUploadProgressMessage(Message):
+    def __init__(self):
+        super().__init__(
+            title = I18N_CATALOG.i18nc("@info:status", "Sending Print Job"),
+            text = I18N_CATALOG.i18nc("@info:status", "Uploading print job to printer."),
+            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)