Example #1
0
    def set_format(self, column):
        str_format = Qt.ISODate
        if self.have_date and self.have_time:
            self.setDisplayFormat("yyyy-MM-dd hh:mm:ss")
            c_format = "%Y-%m-%d %H:%M:%S"
            min_datetime, max_datetime = self.find_range(column, c_format)
            self.min_datetime = QDateTime.fromString(min_datetime, str_format)
            self.max_datetime = QDateTime.fromString(max_datetime, str_format)
            self.setCalendarPopup(True)
            self.calendarWidget = gui.CalendarWidgetWithTime(
                self, time=self.min_datetime.time())
            self.calendarWidget.timeedit.timeChanged.connect(self.set_datetime)
            self.setCalendarWidget(self.calendarWidget)
            self.setDateTimeRange(self.min_datetime, self.max_datetime)

        elif self.have_date and not self.have_time:
            self.setDisplayFormat("yyyy-MM-dd")
            self.setCalendarPopup(True)
            min_datetime, max_datetime = self.find_range(column, "%Y-%m-%d")
            self.min_datetime = QDate.fromString(min_datetime, str_format)
            self.max_datetime = QDate.fromString(max_datetime, str_format)
            self.setDateRange(self.min_datetime, self.max_datetime)

        elif not self.have_date and self.have_time:
            self.setDisplayFormat("hh:mm:ss")
            min_datetime, max_datetime = self.find_range(column, "%H:%M:%S")
            self.min_datetime = QTime.fromString(min_datetime, str_format)
            self.max_datetime = QTime.fromString(max_datetime, str_format)
            self.setTimeRange(self.min_datetime, self.max_datetime)
Example #2
0
    def valuesChanged(self, minValue, maxValue):
        self.slider_values = (minValue, maxValue)
        self._delta = max(1, (maxValue - minValue))
        minTime = self.slider.scale(minValue)
        maxTime = self.slider.scale(maxValue)

        from_dt = QDateTime.fromMSecsSinceEpoch(minTime * 1000).toUTC()
        to_dt = QDateTime.fromMSecsSinceEpoch(maxTime * 1000).toUTC()
        with blockSignals(self.date_from, self.date_to):
            self.date_from.setDateTime(from_dt)
            self.date_to.setDateTime(to_dt)

        self.send_selection(minTime, maxTime)
    def test_no_date_no_time(self):
        callback = Mock()
        editor = TimeVariableEditor(self.parent, TimeVariable("var"), callback)
        self.assertEqual(editor.value, 0)
        self.assertEqual(self.editor._edit.dateTime(),
                         QDateTime(QDate(1970, 1, 1), QTime(0, 0, 0)))
        self.callback.assert_not_called()

        datetime = QDateTime(QDate(2001, 9, 9), QTime(1, 2, 3))
        editor._edit.setDateTime(datetime)
        self.assertEqual(editor._edit.dateTime(), datetime)
        self.assertEqual(editor.value, 999993600 + 3723)
        callback.assert_called_once()
Example #4
0
    def valuesChanged(self, minValue, maxValue):
        self.slider_values = (minValue, maxValue)
        self._delta = max(1, (maxValue - minValue))
        minTime = self.slider.scale(minValue)
        maxTime = self.slider.scale(maxValue)

        from_dt = QDateTime.fromMSecsSinceEpoch(minTime * 1000).toUTC()
        to_dt = QDateTime.fromMSecsSinceEpoch(maxTime * 1000).toUTC()
        with blockSignals(self.date_from,
                          self.date_to):
            self.date_from.setDateTime(from_dt)
            self.date_to.setDateTime(to_dt)

        self.send_selection(minTime, maxTime)
 def test_edit(self):
     """ Edit datetimeedit by user. """
     datetime = QDateTime(QDate(2001, 9, 9))
     self.editor._edit.setDateTime(datetime)
     self.assertEqual(self.editor.value, 999993600)
     self.assertEqual(self.editor._edit.dateTime(), datetime)
     self.callback.assert_called_once()
 def test_set_value(self):
     """ Programmatically set datetimeedit value. """
     value = 999993600
     self.editor.value = value
     self.assertEqual(self.editor._edit.dateTime(),
                      QDateTime(QDate(2001, 9, 9)))
     self.assertEqual(self.editor.value, value)
     self.callback.assert_called_once()
Example #7
0
    def test_set_datetime(self):
        c = gui.DateTimeEditWCalendarTime(None)

        # default time (now)
        c.set_datetime()
        self.assertLessEqual(
            abs(c.dateTime().toSecsSinceEpoch() - time.time()), 2)

        # some date
        poeh = QDateTime(QDate(1961, 4, 12), QTime(6, 7))
        c.set_datetime(poeh)
        self.assertEqual(c.dateTime(), poeh)

        # set a different time
        ali = QTime(8, 5)
        c.set_datetime(ali)
        poeh.setTime(ali)
        self.assertEqual(c.dateTime(), poeh)
Example #8
0
    def set_data(self, data):
        slider = self.slider
        self.data = data = None if data is None else Timeseries.from_data_table(
            data)

        def disabled():
            slider.setFormatter(str)
            slider.setHistogram(None)
            slider.setScale(0, 0)
            slider.setValues(0, 0)
            slider.setDisabled(True)
            self.send('Subset', None)

        if data is None:
            disabled()
            return

        if not isinstance(data.time_variable, TimeVariable):
            self.Error.no_time_variable()
            disabled()
            return
        self.Error.clear()
        var = data.time_variable

        time_values = data.time_values

        slider.setDisabled(False)
        slider.setHistogram(time_values)
        slider.setFormatter(var.repr_val)
        slider.setScale(time_values.min(), time_values.max())
        self.valuesChanged(slider.minimumValue(), slider.maximumValue())

        # Update datetime edit fields
        min_dt = QDateTime.fromMSecsSinceEpoch(time_values[0] * 1000).toUTC()
        max_dt = QDateTime.fromMSecsSinceEpoch(time_values[-1] * 1000).toUTC()
        self.date_from.setDateTimeRange(min_dt, max_dt)
        self.date_to.setDateTimeRange(min_dt, max_dt)
        date_format = '   '.join(
            (self.DATE_FORMATS[0] if var.have_date else '',
             self.DATE_FORMATS[1] if var.have_time else '')).strip()
        self.date_from.setDisplayFormat(date_format)
        self.date_to.setDisplayFormat(date_format)
Example #9
0
    def node_info_complete(self, future):
        assert self.thread() is QThread.currentThread()
        assert future.done()

        self._task = None
        self.progressBarFinished()

        self.setCursor(Qt.ArrowCursor)
        self.btn_connect.setText(self.LABEL_CONNECT)
        self.Information.fetching_node_info.clear()

        try:
            lst, min_time, max_time = future.result(
            )  # type: Tuple[List[List], pd.Timestamp, pd.Timestamp]
        except self.Cancelled:
            pass
        except Exception as e:
            log.exception("Error fetching node info")
            self.Error.fetching_node_info_failed(e)
        else:
            self.model.wrap(lst)
            CachedNodeInfoTable.dump_list(lst)
            self.btn_download.setEnabled(True)

            # Apply saved row selection
            if self.selection:
                try:
                    selection = QItemSelection()
                    for row in self.model.mapFromSourceRows(self.selection):
                        selection.select(self.model.index(row, 0))
                    self.view.selectionModel().select(selection)
                except Exception:
                    log.exception('Failed to restore selection')
                self.selection = []

            self.date_from.setDateTime(
                QDateTime.fromMSecsSinceEpoch(min_time.timestamp() * 1000,
                                              Qt.UTC))
            self.date_to.setDateTime(
                QDateTime.fromMSecsSinceEpoch(max_time.timestamp() * 1000,
                                              Qt.UTC))
Example #10
0
    def set_data(self, data):
        slider = self.slider
        self.data = data = None if data is None else Timeseries.from_data_table(data)

        def disabled():
            slider.setFormatter(str)
            slider.setHistogram(None)
            slider.setScale(0, 0)
            slider.setValues(0, 0)
            self._set_disabled(True)
            self.Outputs.subset.send(None)

        if data is None:
            disabled()
            return

        if not isinstance(data.time_variable, TimeVariable):
            self.Error.no_time_variable()
            disabled()
            return
        self.Error.clear()
        var = data.time_variable

        time_values = data.time_values

        self._set_disabled(False)
        slider.setHistogram(time_values)
        slider.setFormatter(var.repr_val)
        slider.setScale(time_values.min(), time_values.max())
        self.valuesChanged(slider.minimumValue(), slider.maximumValue())

        # Update datetime edit fields
        min_dt = QDateTime.fromMSecsSinceEpoch(time_values[0] * 1000).toUTC()
        max_dt = QDateTime.fromMSecsSinceEpoch(time_values[-1] * 1000).toUTC()
        self.date_from.setDateTimeRange(min_dt, max_dt)
        self.date_to.setDateTimeRange(min_dt, max_dt)
        date_format = '   '.join((self.DATE_FORMATS[0] if var.have_date else '',
                                  self.DATE_FORMATS[1] if var.have_time else '')).strip()
        self.date_from.setDisplayFormat(date_format)
        self.date_to.setDisplayFormat(date_format)
    def test_have_time(self):
        callback = Mock()
        editor = TimeVariableEditor(self.parent,
                                    TimeVariable("var", have_time=1), callback)
        self.assertEqual(editor.value, 0)
        self.assertEqual(self.editor._edit.dateTime(), _datetime(1970, 1, 1))
        self.callback.assert_not_called()

        datetime = QDateTime(QDate(1900, 1, 1), QTime(1, 2, 3))
        editor._edit.setDateTime(datetime)
        self.assertEqual(editor._edit.dateTime(), datetime)
        self.assertEqual(editor.value, 3723)
        callback.assert_called_once()
Example #12
0
 def set_datetime(self, date_time):
     if not date_time:
         date_time = self.min_datetime
     if self.have_date and self.have_time:
         if isinstance(date_time, QTime):
             self.setDateTime(
                 QDateTime(self.date(), self.calendarWidget.timeedit.time()))
         else:
             self.setDateTime(date_time)
     elif self.have_date and not self.have_time:
         self.setDate(date_time)
     elif not self.have_date and self.have_time:
         self.setTime(date_time)
Example #13
0
    def dteditValuesChanged(self, minTime, maxTime):
        minValue = self.slider.unscale(minTime)
        maxValue = self.slider.unscale(maxTime)
        if minValue == maxValue:
            # maxValue's range is minValue's range shifted by one
            maxValue += 1
            maxTime = self.slider.scale(maxValue)
            to_dt = QDateTime.fromMSecsSinceEpoch(maxTime * 1000).toUTC()
            with blockSignals(self.date_to):
                self.date_to.setDateTime(to_dt)

        self._delta = max(1, (maxValue - minValue))

        if self.slider_values != (minValue, maxValue):
            self.slider_values = (minValue, maxValue)
            with blockSignals(self.slider):
                self.slider.setValues(minValue, maxValue)

        self.send_selection(minTime, maxTime)
Example #14
0
    def set_data(self, data):
        self.cancel()
        self.closeContext()
        self.varmodel[:] = []
        self._variable_imputation_state = {}  # type: VariableState
        self.modified = False
        self.data = data

        if data is not None:
            self.varmodel[:] = data.domain.variables
            self.openContext(data.domain)
            self.time_widget.set_datetime(
                QDateTime.fromSecsSinceEpoch(self.default_time))
            # restore per variable imputation state
            self._restore_state(self._variable_imputation_state)

        summary = len(data) if data else self.info.NoInput
        details = format_summary_details(data) if data else ""
        self.info.set_input_summary(summary, details)

        self.update_varview()
        self.unconditional_commit()
Example #15
0
 def __map_to_datetime(self, value: float) -> QDateTime:
     return QDateTime.fromString(self._variable.repr_val(value),
                                 self._format)
Example #16
0
 def __map_from_datetime(self, date_time: QDateTime) -> float:
     return self._variable.to_val(date_time.toString(self._format))
Example #17
0
    def __init__(self):
        super().__init__()
        self.data = None  # type: Optional[Orange.data.Table]
        self.learner = None  # type: Optional[Learner]
        self.default_learner = SimpleTreeLearner(min_instances=10,
                                                 max_depth=10)
        self.modified = False
        self.executor = qconcurrent.ThreadExecutor(self)
        self.__task = None

        main_layout = self.controlArea.layout()

        box = gui.vBox(self.controlArea, "默认方法")

        box_layout = QGridLayout()
        box_layout.setSpacing(8)
        box.layout().addLayout(box_layout)

        button_group = QButtonGroup()
        button_group.buttonClicked[int].connect(self.set_default_method)

        for i, (method, _) in enumerate(list(METHODS.items())[1:-1]):
            imputer = self.create_imputer(method)
            button = QRadioButton(imputer.name)
            button.setChecked(method == self.default_method_index)
            button_group.addButton(button, method)
            box_layout.addWidget(button, i % 3, i // 3)

        def set_default_time(datetime):
            datetime = datetime.toSecsSinceEpoch()
            if datetime != self.default_time:
                self.default_time = datetime
                if self.default_method_index == Method.Default:
                    self._invalidate()

        hlayout = QHBoxLayout()
        box.layout().addLayout(hlayout)
        button = QRadioButton("固定值; 数值变量:")
        button_group.addButton(button, Method.Default)
        button.setChecked(Method.Default == self.default_method_index)
        hlayout.addWidget(button)

        self.numeric_value_widget = DoubleSpinBox(
            minimum=DBL_MIN,
            maximum=DBL_MAX,
            singleStep=.1,
            value=self.default_numeric_value,
            alignment=Qt.AlignRight,
            enabled=self.default_method_index == Method.Default,
        )
        self.numeric_value_widget.editingFinished.connect(
            self.__on_default_numeric_value_edited)
        self.connect_control("default_numeric_value",
                             self.numeric_value_widget.setValue)
        hlayout.addWidget(self.numeric_value_widget)

        hlayout.addWidget(QLabel(", 时间:"))

        self.time_widget = gui.DateTimeEditWCalendarTime(self)
        self.time_widget.setEnabled(
            self.default_method_index == Method.Default)
        self.time_widget.setKeyboardTracking(False)
        self.time_widget.setContentsMargins(0, 0, 0, 0)
        self.time_widget.set_datetime(
            QDateTime.fromSecsSinceEpoch(self.default_time))
        self.connect_control(
            "default_time", lambda value: self.time_widget.set_datetime(
                QDateTime.fromSecsSinceEpoch(value)))
        self.time_widget.dateTimeChanged.connect(set_default_time)
        hlayout.addWidget(self.time_widget)

        self.default_button_group = button_group

        box = gui.hBox(self.controlArea, self.tr("设置单个属性"), flat=False)

        self.varview = ListViewSearch(
            selectionMode=QListView.ExtendedSelection, uniformItemSizes=True)
        self.varview.setItemDelegate(DisplayFormatDelegate())
        self.varmodel = itemmodels.VariableListModel()
        self.varview.setModel(self.varmodel)
        self.varview.selectionModel().selectionChanged.connect(
            self._on_var_selection_changed)
        self.selection = self.varview.selectionModel()

        box.layout().addWidget(self.varview)
        vertical_layout = QVBoxLayout(margin=0)

        self.methods_container = QWidget(enabled=False)
        method_layout = QVBoxLayout(margin=0)
        self.methods_container.setLayout(method_layout)

        button_group = QButtonGroup()
        for method in Method:
            imputer = self.create_imputer(method)
            button = QRadioButton(text=imputer.name)
            button_group.addButton(button, method)
            method_layout.addWidget(button)

        self.value_combo = QComboBox(
            minimumContentsLength=8,
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon,
            activated=self._on_value_selected)
        self.value_double = DoubleSpinBox(
            editingFinished=self._on_value_selected,
            minimum=DBL_MIN,
            maximum=DBL_MAX,
            singleStep=.1,
        )
        self.value_stack = value_stack = QStackedWidget()
        value_stack.addWidget(self.value_combo)
        value_stack.addWidget(self.value_double)
        method_layout.addWidget(value_stack)

        button_group.buttonClicked[int].connect(
            self.set_method_for_current_selection)

        self.reset_button = QPushButton(
            "Restore All to Default",
            enabled=False,
            default=False,
            autoDefault=False,
            clicked=self.reset_variable_state,
        )

        vertical_layout.addWidget(self.methods_container)
        vertical_layout.addStretch(2)
        vertical_layout.addWidget(self.reset_button)

        box.layout().addLayout(vertical_layout)

        self.variable_button_group = button_group

        gui.auto_apply(self.buttonsArea, self, "autocommit")
Example #18
0
    def __init__(self):
        super().__init__()
        self.data = None  # type: Optional[Orange.data.Table]
        self.learner = None  # type: Optional[Learner]
        self.default_learner = SimpleTreeLearner(min_instances=10,
                                                 max_depth=10)
        self.modified = False
        self.executor = qconcurrent.ThreadExecutor(self)
        self.__task = None

        main_layout = QVBoxLayout()
        main_layout.setContentsMargins(10, 10, 10, 10)
        self.controlArea.layout().addLayout(main_layout)

        box = gui.vBox(None, "Default Method")
        main_layout.addWidget(box)

        box_layout = QGridLayout()
        box_layout.setSpacing(8)
        box.layout().addLayout(box_layout)

        button_group = QButtonGroup()
        button_group.buttonClicked[int].connect(self.set_default_method)

        for i, (method, _) in enumerate(list(METHODS.items())[1:-1]):
            imputer = self.create_imputer(method)
            button = QRadioButton(imputer.name)
            button.setChecked(method == self.default_method_index)
            button_group.addButton(button, method)
            box_layout.addWidget(button, i % 3, i // 3)

        def set_default_time(datetime):
            datetime = datetime.toSecsSinceEpoch()
            if datetime != self.default_time:
                self.default_time = datetime
                if self.default_method_index == Method.Default:
                    self._invalidate()

        hlayout = QHBoxLayout()
        box.layout().addLayout(hlayout)
        button = QRadioButton("Fixed values; numeric variables:")
        button_group.addButton(button, Method.Default)
        button.setChecked(Method.Default == self.default_method_index)
        hlayout.addWidget(button)

        locale = QLocale()
        locale.setNumberOptions(locale.NumberOption.RejectGroupSeparator)
        validator = QDoubleValidator()
        validator.setLocale(locale)
        self.numeric_value_widget = le = gui.lineEdit(
            None,
            self,
            "default_numeric",
            validator=validator,
            alignment=Qt.AlignRight,
            callback=self._invalidate,
            enabled=self.default_method_index == Method.Default)
        hlayout.addWidget(le)

        hlayout.addWidget(QLabel(", time:"))

        self.time_widget = gui.DateTimeEditWCalendarTime(self)
        self.time_widget.setEnabled(
            self.default_method_index == Method.Default)
        self.time_widget.setKeyboardTracking(False)
        self.time_widget.setContentsMargins(0, 0, 0, 0)
        self.time_widget.set_datetime(
            QDateTime.fromSecsSinceEpoch(self.default_time))
        self.connect_control(
            "default_time", lambda value: self.time_widget.set_datetime(
                QDateTime.fromSecsSinceEpoch(value)))
        self.time_widget.dateTimeChanged.connect(set_default_time)
        hlayout.addWidget(self.time_widget)

        self.default_button_group = button_group

        box = QGroupBox(title=self.tr("Individual Attribute Settings"),
                        flat=False)
        main_layout.addWidget(box)

        horizontal_layout = QHBoxLayout(box)
        main_layout.addWidget(box)

        self.varview = ListViewSearch(
            selectionMode=QListView.ExtendedSelection, uniformItemSizes=True)
        self.varview.setItemDelegate(DisplayFormatDelegate())
        self.varmodel = itemmodels.VariableListModel()
        self.varview.setModel(self.varmodel)
        self.varview.selectionModel().selectionChanged.connect(
            self._on_var_selection_changed)
        self.selection = self.varview.selectionModel()

        horizontal_layout.addWidget(self.varview)
        vertical_layout = QVBoxLayout(margin=0)

        self.methods_container = QWidget(enabled=False)
        method_layout = QVBoxLayout(margin=0)
        self.methods_container.setLayout(method_layout)

        button_group = QButtonGroup()
        for method in Method:
            imputer = self.create_imputer(method)
            button = QRadioButton(text=imputer.name)
            button_group.addButton(button, method)
            method_layout.addWidget(button)

        self.value_combo = QComboBox(
            minimumContentsLength=8,
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLength,
            activated=self._on_value_selected)
        self.value_double = QDoubleSpinBox(
            editingFinished=self._on_value_selected,
            minimum=-1000.,
            maximum=1000.,
            singleStep=.1,
            decimals=3,
        )
        self.value_stack = value_stack = QStackedWidget()
        value_stack.addWidget(self.value_combo)
        value_stack.addWidget(self.value_double)
        method_layout.addWidget(value_stack)

        button_group.buttonClicked[int].connect(
            self.set_method_for_current_selection)

        self.reset_button = QPushButton(
            "Restore All to Default",
            enabled=False,
            default=False,
            autoDefault=False,
            clicked=self.reset_variable_state,
        )

        vertical_layout.addWidget(self.methods_container)
        vertical_layout.addStretch(2)
        vertical_layout.addWidget(self.reset_button)

        horizontal_layout.addLayout(vertical_layout)

        self.variable_button_group = button_group

        box = gui.auto_apply(self.controlArea, self, "autocommit")
        box.button.setFixedWidth(180)
        box.layout().insertStretch(0)

        self.info.set_input_summary(self.info.NoInput)
        self.info.set_output_summary(self.info.NoOutput)
Example #19
0
 def test_init(self):
     self.assertEqual(self.editor.value, 0)
     self.assertEqual(self.editor._edit.dateTime(),
                      QDateTime(QDate(1970, 1, 1)))
     self.callback.assert_not_called()
Example #20
0
 def format_time(i):
     dt = QDateTime.fromMSecsSinceEpoch(i * 1000).toUTC()
     return dt.toString(date_format)
def _datetime(y, m, d) -> QDateTime:
    return QDateTime(QDate(y, m, d), QTime(0, 0))
Example #22
0
 def utc_dt(dt):
     qdt = QDateTime(dt)
     qdt.setTimeZone(QTimeZone.utc())
     return qdt
Example #23
0
    def __init__(self):
        self.model = None

        self._task = None  # type: Optional[self.Task]
        self._executor = ThreadExecutor(self)
        self.is_downloading = False

        box = gui.vBox(self.controlArea, 'Database Connection')
        gui.lineEdit(box,
                     self,
                     'con_hostname',
                     label='Hostname:',
                     orientation=Qt.Horizontal,
                     validator=Validator.Hostname())
        gui.lineEdit(box,
                     self,
                     'con_port',
                     label='Port:',
                     orientation=Qt.Horizontal,
                     validator=Validator.Port())
        gui.lineEdit(box,
                     self,
                     'con_username',
                     label='Username:'******'con_password',
                            label='Password:'******'con_database',
                     label='Database:',
                     orientation=Qt.Horizontal)
        gui.spin(box, self, 'con_timeout', 5, 300, 5, label='Timeout [s]:')
        self.btn_connect = gui.button(box,
                                      self,
                                      self.LABEL_CONNECT,
                                      callback=self.load_data)

        box = gui.vBox(self.controlArea, 'Download')

        def _dateTimeChanged(editted):
            def handler():
                minTime = self.date_from.dateTime().toMSecsSinceEpoch() / 1000
                maxTime = self.date_to.dateTime().toMSecsSinceEpoch() / 1000
                if minTime > maxTime:
                    minTime = maxTime = minTime if editted == self.date_from else maxTime

                    other = self.date_to if editted == self.date_from else self.date_from
                    with blockSignals(other):
                        other.setDateTime(editted.dateTime())

                    self.btn_download.setEnabled(minTime != maxTime)

                # Update saved settings
                self.sample_ts_from = minTime
                self.sample_ts_to = maxTime

            return handler

        kwargs = dict(calendarPopup=True,
                      displayFormat=' '.join(self.DATE_FORMATS),
                      timeSpec=Qt.UTC)
        date_from = self.date_from = QDateTimeEdit(self, **kwargs)
        date_to = self.date_to = QDateTimeEdit(self, **kwargs)
        date_from.setDateTime(
            QDateTime.fromMSecsSinceEpoch(self.sample_ts_from * 1000, Qt.UTC))
        date_to.setDateTime(
            QDateTime.fromMSecsSinceEpoch(self.sample_ts_to * 1000, Qt.UTC))
        date_from.dateTimeChanged.connect(_dateTimeChanged(date_from))
        date_to.dateTimeChanged.connect(_dateTimeChanged(date_to))

        hbox = gui.hBox(box)
        hbox.layout().addWidget(QLabel('From:'))
        hbox.layout().addWidget(date_from)
        hbox = gui.hBox(box)
        hbox.layout().addWidget(QLabel('To:'))
        hbox.layout().addWidget(date_to)

        self.box_include_data = gui.vBox(box, 'Include')

        gui.spin(box,
                 self,
                 'sample_size',
                 100,
                 20000,
                 100,
                 label='Sample size:')
        gui.comboBox(box,
                     self,
                     'sample_resolution',
                     label='Resolution:',
                     orientation=Qt.Horizontal,
                     items=tuple(self.RESOLUTION.keys()),
                     sendSelectedValue=True)
        gui.comboBox(box,
                     self,
                     'sample_interpolation',
                     label='Interpolation:',
                     orientation=Qt.Horizontal,
                     items=tuple(self.INTERPOLATION.keys()),
                     sendSelectedValue=True)

        self.btn_download = gui.button(box,
                                       self,
                                       self.LABEL_DOWNLOAD,
                                       callback=self.download)
        gui.rubber(self.controlArea)

        ## Main area

        class Model(PyTableModel):
            def update_row(self, i, row):
                self[i] = row

        model = self.model = Model(parent=self)
        model.setHorizontalHeaderLabels([
            'Node Id', 'Interfaces', 'Start Time', 'Stop Time',
            'Available Data'
        ])
        view = self.view = gui.TableView(self)
        view.horizontalHeader().setStretchLastSection(False)
        view.setModel(self.model)
        self.mainArea.layout().addWidget(view)

        # Restore node info table from cache, if any
        try:
            lst = CachedNodeInfoTable.load_list()
        except Exception:
            pass  # Cache not exists
        else:
            model.wrap(lst)

        # Restore tables checkboxes from cache
        try:
            tables = CachedNodeInfoTable.load_tables()
        except Exception:
            pass
        else:
            for table in tables:
                self.box_include_data.layout().addWidget(
                    QCheckBox(table, self, checked=table
                              in self.included_data))

        # Establish default database connection from settings
        set_connection_params(self.con_hostname,
                              self.con_port,
                              self.con_username,
                              self.con_password,
                              self.con_database,
                              timeout=self.con_timeout)