Exemple #1
0
def _fileDialog(acceptMode, fileMode,
                parent=None, caption='', directory='', filters=(),
                selectedFilter=None, options=0):

    nameFilters = make_filters(filters)

    dialog = QFileDialog(parent, caption, directory)
    dialog.setNameFilters(nameFilters)
    dialog.setAcceptMode(acceptMode)
    dialog.setFileMode(fileMode)
    dialog.setOptions(QFileDialog.Options(options))
    if selectedFilter is not None:
        dialog.selectNameFilter(nameFilters[selectedFilter])

    if dialog.exec_() != QDialog.Accepted:
        return None

    filename = dialog.selectedFiles()[0]
    if fileMode != QFileDialog.Directory:
        selectedFilter = nameFilters.index(dialog.selectedNameFilter())

        _, ext = os.path.splitext(filename)

        if not ext:
            ext = filters[selectedFilter][1]    # use first extension
            if ext.startswith('*.') and ext != '*.*':
                return filename + ext[1:]       # remove leading '*'
    return filename
Exemple #2
0
    def on_file_browse(self):
        settings = QSettings()

        # look for directory
        path = QgsProject.instance().homePath()
        if path == '':
            path = settings.value("mask/file_dir", '')
            if path == '':
                path = QDir.homePath()

        drivers = QgsVectorFileWriter.ogrDriverList()
        filterList = []
        filterMap = {}
        for ln, n in drivers.items():
            # grrr, driverMetadata is not really consistent
            if n == "ESRI Shapefile":
                ext = "shp"
                glob = "*.shp"
            else:
                md = QgsVectorFileWriter.MetaData()
                if QgsVectorFileWriter.driverMetadata(n, md):
                    ext = md.ext
                    glob = md.glob
                else:
                    continue

            fn = "%s (%s)" % (ln, glob)
            filterMap[fn] = (n, ext, glob)
            filterList += [fn]

        fileFilters = ';;'.join(filterList)
        fd = QFileDialog(None, self.tr("Select a filename to save the mask layer to"),
                         path, fileFilters)
        save_format_name = self.parameters.file_format
        self.save_format = None
        for k, v in filterMap.items():
            if v[0] == save_format_name:
                self.save_format = v
                fd.selectNameFilter(k)
                break

        def on_filter_selected(ff):
            self.save_format = filterMap[ff]

        fd.filterSelected.connect(on_filter_selected)
        fd.setAcceptMode(QFileDialog.AcceptSave)
        r = fd.exec_()
        if r == 1:
            fn = fd.selectedFiles()[0]
            driver, ext, glob = self.save_format
            if not fn.endswith("." + ext):
                fn += "." + ext

            self.ui.filePath.setText(fn)
            self.ui.formatLbl.setText(self.save_format[0])
            self.parameters.file_format = self.save_format[0]
            self.parameters.file_path = fn
    def requestWrite(self, node, file_name = None, limit_mimetypes = None):
        if self._writing:
            raise OutputDeviceError.DeviceBusyError()

        dialog = QFileDialog()
        dialog.setWindowTitle(catalog.i18nc("@title:window", "Save to File"))
        dialog.setFileMode(QFileDialog.AnyFile)
        dialog.setAcceptMode(QFileDialog.AcceptSave)

        # Ensure platform never ask for overwrite confirmation since we do this ourselves
        dialog.setOption(QFileDialog.DontConfirmOverwrite)

        if sys.platform == "linux" and "KDE_FULL_SESSION" in os.environ:
            dialog.setOption(QFileDialog.DontUseNativeDialog)

        filters = []
        mime_types = []
        selected_filter = None
        last_used_type = Preferences.getInstance().getValue("local_file/last_used_type")

        file_types = Application.getInstance().getMeshFileHandler().getSupportedFileTypesWrite()
        file_types.sort(key = lambda k: k["description"])
        if limit_mimetypes:
            file_types = list(filter(lambda i: i["mime_type"] in limit_mimetypes, file_types))

        if len(file_types) == 0:
            Logger.log("e", "There are no file types available to write with!")
            raise OutputDeviceError.WriteRequestFailedError()

        for item in file_types:
            type_filter = "{0} (*.{1})".format(item["description"], item["extension"])
            filters.append(type_filter)
            mime_types.append(item["mime_type"])
            if last_used_type == item["mime_type"]:
                selected_filter = type_filter
                if file_name:
                    file_name += "." + item["extension"]

        dialog.setNameFilters(filters)
        if selected_filter != None:
            dialog.selectNameFilter(selected_filter)

        if file_name != None:
            dialog.selectFile(file_name)

        dialog.restoreState(Preferences.getInstance().getValue("local_file/dialog_state").encode())

        if not dialog.exec_():
            raise OutputDeviceError.UserCanceledError()

        Preferences.getInstance().setValue("local_file/dialog_state", str(dialog.saveState()))

        selected_type = file_types[filters.index(dialog.selectedNameFilter())]
        Preferences.getInstance().setValue("local_file/last_used_type", selected_type["mime_type"])

        file_name = dialog.selectedFiles()[0]

        if os.path.exists(file_name):
            result = QMessageBox.question(None, catalog.i18nc("@title:window", "File Already Exists"), catalog.i18nc("@label", "The file <filename>{0}</filename> already exists. Are you sure you want to overwrite it?").format(file_name))
            if result == QMessageBox.No:
                raise OutputDeviceError.UserCanceledError()

        self.writeStarted.emit(self)
        mesh_writer = Application.getInstance().getMeshFileHandler().getWriter(selected_type["id"])
        try:
            mode = selected_type["mode"]
            if mode == MeshWriter.OutputMode.TextMode:
                Logger.log("d", "Writing to Local File %s in text mode", file_name)
                stream = open(file_name, "wt")
            elif mode == MeshWriter.OutputMode.BinaryMode:
                Logger.log("d", "Writing to Local File %s in binary mode", file_name)
                stream = open(file_name, "wb")

            job = WriteMeshJob(mesh_writer, stream, node, mode)
            job.setFileName(file_name)
            job.progress.connect(self._onJobProgress)
            job.finished.connect(self._onWriteJobFinished)

            message = Message(catalog.i18nc("@info:progress", "Saving to <filename>{0}</filename>").format(file_name), 0, False, -1)
            message.show()

            job._message = message
            self._writing = True
            job.start()
        except PermissionError as e:
            Logger.log("e", "Permission denied when trying to write to %s: %s", file_name, str(e))
            raise OutputDeviceError.PermissionDeniedError(catalog.i18nc("@info:status", "Permission denied when trying to save <filename>{0}</filename>").format(file_name)) from e
        except OSError as e:
            Logger.log("e", "Operating system would not let us write to %s: %s", file_name, str(e))
            raise OutputDeviceError.WriteRequestFailedError(catalog.i18nc("@info:status", "Could not save to <filename>{0}</filename>: <message>{1}</message>").format()) from e
    def browse(self):
        """
        Open a file dialog and select a user specified file.
        """
        formats = [
            "Text - comma separated (*.csv, *)",
            "Text - tab separated (*.tsv, *)",
            "Text - all files (*)"
        ]

        dlg = QFileDialog(
            self, windowTitle="Open Data File",
            acceptMode=QFileDialog.AcceptOpen,
            fileMode=QFileDialog.ExistingFile
        )
        dlg.setNameFilters(formats)
        state = self.dialog_state
        lastdir = state.get("directory", "")
        lastfilter = state.get("filter", "")

        if lastdir and os.path.isdir(lastdir):
            dlg.setDirectory(lastdir)
        if lastfilter:
            dlg.selectNameFilter(lastfilter)

        status = dlg.exec_()
        dlg.deleteLater()
        if status == QFileDialog.Accepted:
            self.dialog_state["directory"] = dlg.directory().absolutePath()
            self.dialog_state["filter"] = dlg.selectedNameFilter()

            selected_filter = dlg.selectedNameFilter()
            path = dlg.selectedFiles()[0]
            # pre-flight check; try to determine the nature of the file
            mtype = _mime_type_for_path(path)
            if not mtype.inherits("text/plain"):
                mb = QMessageBox(
                    parent=self,
                    windowTitle="",
                    icon=QMessageBox.Question,
                    text="The '{basename}' may be a binary file.\n"
                         "Are you sure you want to continue?".format(
                            basename=os.path.basename(path)),
                    standardButtons=QMessageBox.Cancel | QMessageBox.Yes
                )
                mb.setWindowModality(Qt.WindowModal)
                if mb.exec() == QMessageBox.Cancel:
                    return

            # initialize dialect based on selected extension
            if selected_filter in formats[:-1]:
                filter_idx = formats.index(selected_filter)
                if filter_idx == 0:
                    dialect = csv.excel()
                elif filter_idx == 1:
                    dialect = csv.excel_tab()
                else:
                    dialect = csv.excel_tab()
                header = True
            else:
                try:
                    dialect, header = sniff_csv_with_path(path)
                except Exception:
                    dialect, header = csv.excel(), True

            options = None
            # Search for path in history.
            # If found use the stored params to initialize the import dialog
            items = self.itemsFromSettings()
            idx = index_where(items, lambda t: samepath(t[0], path))
            if idx is not None:
                _, options_ = items[idx]
                if options_ is not None:
                    options = options_

            if options is None:
                if not header:
                    rowspec = []
                else:
                    rowspec = [(range(0, 1), RowSpec.Header)]
                options = Options(
                    encoding="utf-8", dialect=dialect, rowspec=rowspec)

            dlg = CSVImportDialog(
                self, windowTitle="Import Options",  sizeGripEnabled=True)
            dlg.setWindowModality(Qt.WindowModal)
            dlg.setPath(path)
            dlg.setOptions(options)
            status = dlg.exec_()
            dlg.deleteLater()
            if status == QDialog.Accepted:
                self.set_selected_file(path, dlg.options())
    def requestWrite(self, nodes, file_name = None, limit_mimetypes = None, file_handler = None, **kwargs):
        if self._writing:
            raise OutputDeviceError.DeviceBusyError()

        # Set up and display file dialog
        dialog = QFileDialog()

        dialog.setWindowTitle(catalog.i18nc("@title:window", "Save to File"))
        dialog.setFileMode(QFileDialog.AnyFile)
        dialog.setAcceptMode(QFileDialog.AcceptSave)

        # Ensure platform never ask for overwrite confirmation since we do this ourselves
        dialog.setOption(QFileDialog.DontConfirmOverwrite)

        if sys.platform == "linux" and "KDE_FULL_SESSION" in os.environ:
            dialog.setOption(QFileDialog.DontUseNativeDialog)

        filters = []
        mime_types = []
        selected_filter = None

        if "preferred_mimetypes" in kwargs and kwargs["preferred_mimetypes"] is not None:
            preferred_mimetypes = kwargs["preferred_mimetypes"]
        else:
            preferred_mimetypes = Application.getInstance().getPreferences().getValue("local_file/last_used_type")
        preferred_mimetype_list = preferred_mimetypes.split(";")

        if not file_handler:
            file_handler = Application.getInstance().getMeshFileHandler()

        file_types = file_handler.getSupportedFileTypesWrite()

        file_types.sort(key = lambda k: k["description"])
        if limit_mimetypes:
            file_types = list(filter(lambda i: i["mime_type"] in limit_mimetypes, file_types))

        file_types = [ft for ft in file_types if not ft["hide_in_file_dialog"]]

        if len(file_types) == 0:
            Logger.log("e", "There are no file types available to write with!")
            raise OutputDeviceError.WriteRequestFailedError(catalog.i18nc("@info:warning", "There are no file types available to write with!"))

        # Find the first available preferred mime type
        preferred_mimetype = None
        for mime_type in preferred_mimetype_list:
            if any(ft["mime_type"] == mime_type for ft in file_types):
                preferred_mimetype = mime_type
                break

        for item in file_types:
            type_filter = "{0} (*.{1})".format(item["description"], item["extension"])
            filters.append(type_filter)
            mime_types.append(item["mime_type"])
            if preferred_mimetype == item["mime_type"]:
                selected_filter = type_filter
                if file_name:
                    file_name += "." + item["extension"]

        # CURA-6411: This code needs to be before dialog.selectFile and the filters, because otherwise in macOS (for some reason) the setDirectory call doesn't work.
        stored_directory = Application.getInstance().getPreferences().getValue("local_file/dialog_save_path")
        dialog.setDirectory(stored_directory)

        # Add the file name before adding the extension to the dialog
        if file_name is not None:
            dialog.selectFile(file_name)

        dialog.setNameFilters(filters)
        if selected_filter is not None:
            dialog.selectNameFilter(selected_filter)

        if not dialog.exec_():
            raise OutputDeviceError.UserCanceledError()

        save_path = dialog.directory().absolutePath()
        Application.getInstance().getPreferences().setValue("local_file/dialog_save_path", save_path)

        selected_type = file_types[filters.index(dialog.selectedNameFilter())]
        Application.getInstance().getPreferences().setValue("local_file/last_used_type", selected_type["mime_type"])

        # Get file name from file dialog
        file_name = dialog.selectedFiles()[0]
        Logger.log("d", "Writing to [%s]..." % file_name)
        
        if os.path.exists(file_name):
            result = QMessageBox.question(None, catalog.i18nc("@title:window", "File Already Exists"), catalog.i18nc("@label Don't translate the XML tag <filename>!", "The file <filename>{0}</filename> already exists. Are you sure you want to overwrite it?").format(file_name))
            if result == QMessageBox.No:
                raise OutputDeviceError.UserCanceledError()

        self.writeStarted.emit(self)

        # Actually writing file
        if file_handler:
            file_writer = file_handler.getWriter(selected_type["id"])
        else:
            file_writer = Application.getInstance().getMeshFileHandler().getWriter(selected_type["id"])

        try:
            mode = selected_type["mode"]
            if mode == MeshWriter.OutputMode.TextMode:
                Logger.log("d", "Writing to Local File %s in text mode", file_name)
                stream = open(file_name, "wt", encoding = "utf-8")
            elif mode == MeshWriter.OutputMode.BinaryMode:
                Logger.log("d", "Writing to Local File %s in binary mode", file_name)
                stream = open(file_name, "wb")
            else:
                Logger.log("e", "Unrecognised OutputMode.")
                return None

            job = WriteFileJob(file_writer, stream, nodes, mode)
            job.setFileName(file_name)
            job.setAddToRecentFiles(True)  # The file will be added into the "recent files" list upon success
            job.progress.connect(self._onJobProgress)
            job.finished.connect(self._onWriteJobFinished)

            message = Message(catalog.i18nc("@info:progress Don't translate the XML tags <filename>!", "Saving to <filename>{0}</filename>").format(file_name),
                              0, False, -1 , catalog.i18nc("@info:title", "Saving"))
            message.show()

            job.setMessage(message)
            self._writing = True
            job.start()
        except PermissionError as e:
            Logger.log("e", "Permission denied when trying to write to %s: %s", file_name, str(e))
            raise OutputDeviceError.PermissionDeniedError(catalog.i18nc("@info:status Don't translate the XML tags <filename>!", "Permission denied when trying to save <filename>{0}</filename>").format(file_name)) from e
        except OSError as e:
            Logger.log("e", "Operating system would not let us write to %s: %s", file_name, str(e))
            raise OutputDeviceError.WriteRequestFailedError(catalog.i18nc("@info:status Don't translate the XML tags <filename> or <message>!", "Could not save to <filename>{0}</filename>: <message>{1}</message>").format()) from e
    def requestWrite(self,
                     nodes,
                     file_name=None,
                     limit_mimetypes=None,
                     file_handler=None,
                     **kwargs):
        if self._writing:
            raise OutputDeviceError.DeviceBusyError()

        # Set up and display file dialog
        dialog = QFileDialog()

        dialog.setWindowTitle(catalog.i18nc("@title:window", "Save to File"))
        dialog.setFileMode(QFileDialog.AnyFile)
        dialog.setAcceptMode(QFileDialog.AcceptSave)

        # Ensure platform never ask for overwrite confirmation since we do this ourselves
        dialog.setOption(QFileDialog.DontConfirmOverwrite)

        if sys.platform == "linux" and "KDE_FULL_SESSION" in os.environ:
            dialog.setOption(QFileDialog.DontUseNativeDialog)

        filters = []
        mime_types = []
        selected_filter = None

        if "preferred_mimetypes" in kwargs and kwargs[
                "preferred_mimetypes"] is not None:
            preferred_mimetypes = kwargs["preferred_mimetypes"]
        else:
            preferred_mimetypes = Application.getInstance().getPreferences(
            ).getValue("local_file/last_used_type")
        preferred_mimetype_list = preferred_mimetypes.split(";")

        if not file_handler:
            file_handler = Application.getInstance().getMeshFileHandler()

        file_types = file_handler.getSupportedFileTypesWrite()

        file_types.sort(key=lambda k: k["description"])
        if limit_mimetypes:
            file_types = list(
                filter(lambda i: i["mime_type"] in limit_mimetypes,
                       file_types))

        file_types = [ft for ft in file_types if not ft["hide_in_file_dialog"]]

        if len(file_types) == 0:
            Logger.log("e", "There are no file types available to write with!")
            raise OutputDeviceError.WriteRequestFailedError(
                catalog.i18nc(
                    "@info:warning",
                    "There are no file types available to write with!"))

        # Find the first available preferred mime type
        preferred_mimetype = None
        for mime_type in preferred_mimetype_list:
            if any(ft["mime_type"] == mime_type for ft in file_types):
                preferred_mimetype = mime_type
                break

        for item in file_types:
            type_filter = "{0} (*.{1})".format(item["description"],
                                               item["extension"])
            filters.append(type_filter)
            mime_types.append(item["mime_type"])
            if preferred_mimetype == item["mime_type"]:
                selected_filter = type_filter
                if file_name:
                    file_name += "." + item["extension"]

        # Add the file name before adding the extension to the dialog
        if file_name is not None:
            dialog.selectFile(file_name)

        dialog.setNameFilters(filters)
        if selected_filter is not None:
            dialog.selectNameFilter(selected_filter)

        stored_directory = Application.getInstance().getPreferences().getValue(
            "local_file/dialog_save_path")
        dialog.setDirectory(stored_directory)

        if not dialog.exec_():
            raise OutputDeviceError.UserCanceledError()

        save_path = dialog.directory().absolutePath()
        Application.getInstance().getPreferences().setValue(
            "local_file/dialog_save_path", save_path)

        selected_type = file_types[filters.index(dialog.selectedNameFilter())]
        Application.getInstance().getPreferences().setValue(
            "local_file/last_used_type", selected_type["mime_type"])

        # Get file name from file dialog
        file_name = dialog.selectedFiles()[0]
        Logger.log("d", "Writing to [%s]..." % file_name)

        if os.path.exists(file_name):
            result = QMessageBox.question(
                None, catalog.i18nc("@title:window", "File Already Exists"),
                catalog.i18nc(
                    "@label Don't translate the XML tag <filename>!",
                    "The file <filename>{0}</filename> already exists. Are you sure you want to overwrite it?"
                ).format(file_name))
            if result == QMessageBox.No:
                raise OutputDeviceError.UserCanceledError()

        self.writeStarted.emit(self)

        # Actually writing file
        if file_handler:
            file_writer = file_handler.getWriter(selected_type["id"])
        else:
            file_writer = Application.getInstance().getMeshFileHandler(
            ).getWriter(selected_type["id"])

        try:
            mode = selected_type["mode"]
            if mode == MeshWriter.OutputMode.TextMode:
                Logger.log("d", "Writing to Local File %s in text mode",
                           file_name)
                stream = open(file_name, "wt", encoding="utf-8")
            elif mode == MeshWriter.OutputMode.BinaryMode:
                Logger.log("d", "Writing to Local File %s in binary mode",
                           file_name)
                stream = open(file_name, "wb")
            else:
                Logger.log("e", "Unrecognised OutputMode.")
                return None

            job = WriteFileJob(file_writer, stream, nodes, mode)
            job.setFileName(file_name)
            job.setAddToRecentFiles(
                True
            )  # The file will be added into the "recent files" list upon success
            job.progress.connect(self._onJobProgress)
            job.finished.connect(self._onWriteJobFinished)

            message = Message(
                catalog.i18nc(
                    "@info:progress Don't translate the XML tags <filename>!",
                    "Saving to <filename>{0}</filename>").format(file_name), 0,
                False, -1, catalog.i18nc("@info:title", "Saving"))
            message.show()

            job.setMessage(message)
            self._writing = True
            job.start()
        except PermissionError as e:
            Logger.log("e", "Permission denied when trying to write to %s: %s",
                       file_name, str(e))
            raise OutputDeviceError.PermissionDeniedError(
                catalog.i18nc(
                    "@info:status Don't translate the XML tags <filename>!",
                    "Permission denied when trying to save <filename>{0}</filename>"
                ).format(file_name)) from e
        except OSError as e:
            Logger.log("e",
                       "Operating system would not let us write to %s: %s",
                       file_name, str(e))
            raise OutputDeviceError.WriteRequestFailedError(
                catalog.i18nc(
                    "@info:status Don't translate the XML tags <filename> or <message>!",
                    "Could not save to <filename>{0}</filename>: <message>{1}</message>"
                ).format()) from e
    def requestWrite(self, nodes, file_name = None, limit_mimetypes = None):
        if self._writing:
            raise OutputDeviceError.DeviceBusyError()

        dialog = QFileDialog()

        dialog.setWindowTitle(catalog.i18nc("@title:window", "Save to File"))
        dialog.setFileMode(QFileDialog.AnyFile)
        dialog.setAcceptMode(QFileDialog.AcceptSave)

        # Ensure platform never ask for overwrite confirmation since we do this ourselves
        dialog.setOption(QFileDialog.DontConfirmOverwrite)

        if sys.platform == "linux" and "KDE_FULL_SESSION" in os.environ:
            dialog.setOption(QFileDialog.DontUseNativeDialog)

        filters = []
        mime_types = []
        selected_filter = None
        last_used_type = Preferences.getInstance().getValue("local_file/last_used_type")

        file_types = Application.getInstance().getMeshFileHandler().getSupportedFileTypesWrite()
        file_types.sort(key = lambda k: k["description"])
        if limit_mimetypes:
            file_types = list(filter(lambda i: i["mime_type"] in limit_mimetypes, file_types))

        if len(file_types) == 0:
            Logger.log("e", "There are no file types available to write with!")
            raise OutputDeviceError.WriteRequestFailedError()

        for item in file_types:
            type_filter = "{0} (*.{1})".format(item["description"], item["extension"])
            filters.append(type_filter)
            mime_types.append(item["mime_type"])
            if last_used_type == item["mime_type"]:
                selected_filter = type_filter
                if file_name:
                    file_name += "." + item["extension"]

        dialog.setNameFilters(filters)
        if selected_filter != None:
            dialog.selectNameFilter(selected_filter)

        if file_name != None:
            dialog.selectFile(file_name)

        stored_directory = Preferences.getInstance().getValue("local_file/dialog_save_path")
        dialog.setDirectory(stored_directory)

        if not dialog.exec_():
            raise OutputDeviceError.UserCanceledError()

        save_path = dialog.directory().absolutePath()
        Preferences.getInstance().setValue("local_file/dialog_save_path", save_path)

        selected_type = file_types[filters.index(dialog.selectedNameFilter())]
        Preferences.getInstance().setValue("local_file/last_used_type", selected_type["mime_type"])

        file_name = dialog.selectedFiles()[0]

        if os.path.exists(file_name):
            result = QMessageBox.question(None, catalog.i18nc("@title:window", "File Already Exists"), catalog.i18nc("@label", "The file <filename>{0}</filename> already exists. Are you sure you want to overwrite it?").format(file_name))
            if result == QMessageBox.No:
                raise OutputDeviceError.UserCanceledError()

        self.writeStarted.emit(self)
        mesh_writer = Application.getInstance().getMeshFileHandler().getWriter(selected_type["id"])
        try:
            mode = selected_type["mode"]
            if mode == MeshWriter.OutputMode.TextMode:
                Logger.log("d", "Writing to Local File %s in text mode", file_name)
                stream = open(file_name, "wt", encoding = "utf-8")
            elif mode == MeshWriter.OutputMode.BinaryMode:
                Logger.log("d", "Writing to Local File %s in binary mode", file_name)
                stream = open(file_name, "wb")

            job = WriteMeshJob(mesh_writer, stream, nodes, mode)
            job.setFileName(file_name)
            job.progress.connect(self._onJobProgress)
            job.finished.connect(self._onWriteJobFinished)

            message = Message(catalog.i18nc("@info:progress", "Saving to <filename>{0}</filename>").format(file_name), 0, False, -1)
            message.show()

            job._message = message
            self._writing = True
            job.start()
        except PermissionError as e:
            Logger.log("e", "Permission denied when trying to write to %s: %s", file_name, str(e))
            raise OutputDeviceError.PermissionDeniedError(catalog.i18nc("@info:status", "Permission denied when trying to save <filename>{0}</filename>").format(file_name)) from e
        except OSError as e:
            Logger.log("e", "Operating system would not let us write to %s: %s", file_name, str(e))
            raise OutputDeviceError.WriteRequestFailedError(catalog.i18nc("@info:status", "Could not save to <filename>{0}</filename>: <message>{1}</message>").format()) from e
    def requestWrite(self,
                     nodes,
                     file_name=None,
                     limit_mimetypes=None,
                     file_handler=None,
                     **kwargs):
        if self._writing:
            raise OutputDeviceError.DeviceBusyError()

            # Set up and display file dialog
        dialog = QFileDialog()

        dialog.setWindowTitle(catalog.i18nc("@title:window", "Save to File"))
        dialog.setFileMode(QFileDialog.AnyFile)
        dialog.setAcceptMode(QFileDialog.AcceptSave)

        # Ensure platform never ask for overwrite confirmation since we do this ourselves
        dialog.setOption(QFileDialog.DontConfirmOverwrite)

        if sys.platform == "linux" and "KDE_FULL_SESSION" in os.environ:
            dialog.setOption(QFileDialog.DontUseNativeDialog)

        filters = []
        mime_types = []
        selected_filter = None
        last_used_type = self._preferences.getValue(
            "local_file/last_used_type")

        if not file_handler:
            file_handler = Application.getInstance().getMeshFileHandler()

        file_types = file_handler.getSupportedFileTypesWrite()

        file_types.sort(key=lambda k: k["description"])
        if limit_mimetypes:
            file_types = list(
                filter(lambda i: i["mime_type"] in limit_mimetypes,
                       file_types))

        if len(file_types) == 0:
            Logger.log("e", "There are no file types available to write with!")
            raise OutputDeviceError.WriteRequestFailedError()

        for item in file_types:
            type_filter = "{0} (*.{1})".format(item["description"],
                                               item["extension"])
            filters.append(type_filter)
            mime_types.append(item["mime_type"])
            if last_used_type == item["mime_type"]:
                selected_filter = type_filter
                if file_name:
                    file_name += "." + item["extension"]

        dialog.setNameFilters(filters)
        if selected_filter is not None:
            dialog.selectNameFilter(selected_filter)

        if file_name is not None:
            dialog.selectFile(file_name)

        stored_directory = self._preferences.getValue(
            "local_file/dialog_save_path")
        dialog.setDirectory(stored_directory)

        if not dialog.exec_():
            raise OutputDeviceError.UserCanceledError()

        save_path = dialog.directory().absolutePath()
        self._preferences.setValue("local_file/dialog_save_path", save_path)

        selected_type = file_types[filters.index(dialog.selectedNameFilter())]
        self._preferences.setValue("local_file/last_used_type",
                                   selected_type["mime_type"])

        # Get file name from file dialog
        file_name = dialog.selectedFiles()[0]
        active_build_plate = Application.getInstance().getMultiBuildPlateModel(
        ).activeBuildPlate
        scene = Application.getInstance().getController().getScene()
        gcode_dict = getattr(scene, "gcode_dict", None)
        if not gcode_dict:
            return
        _gcode = gcode_dict.get(active_build_plate, None)
        self.save_gcode(file_name, _gcode)