def test_corruptjson():
node = JsonNode('root')
with pytest.raises(ValueError) as e:
node.from_json('''
{
"item1": True,
"item2": False
"item3": "something"
}
''')
assert 'corrupt json string' in str(e)
def test_dump():
root = JsonNode()
root.add(JsonItem('a', name='item1'))
root.add(JsonNode('b'))
jsondict = json.loads(root.dump())
assert jsondict['a'].get('__node__') is None
assert jsondict['a']['name'] == 'item1'
assert jsondict['b']['__node__'] == True
def test_load():
root = JsonNode()
jsonstr = '''{
"a": {
"denominator": 1,
"name": "item1",
"decimals": 3,
"readonly": true,
"unit": "",
"numerator": 1
},
"__node__": true,
"b": {
"__node__": true
}
}'''
root.load(jsonstr)
# jsonitem
assert isinstance(root['a'], JsonItem)
assert root['a'].name == "item1"
# jsonnode
assert isinstance(root['b'], JsonNode)
def nested_json():
from jsonwatch.jsonnode import JsonNode
node = JsonNode('root')
node.from_json(nested_json_string)
return node
def simple_json():
from jsonwatch.jsonnode import JsonNode
node = JsonNode('root')
node.from_json(simple_json_string)
return node
def __init__(self, parent=None):
super().__init__(parent)
self.recording_enabled = False
self.serial = serial.Serial()
self.rootnode = JsonNode('')
self._connected = False
self._dirty = False
self._filename = None
# settings
self.settings = QSettingsManager()
set_default_settings(self.settings)
# Controller Settings
self.settingsDialog = None
# object explorer
self.objectexplorer = ObjectExplorer(self.rootnode, self)
self.objectexplorer.nodevalue_changed.connect(self.send_serialdata)
self.objectexplorer.nodeproperty_changed.connect(self.set_dirty)
self.objectexplorerDockWidget = QDockWidget(self.tr("object explorer"),
self)
self.objectexplorerDockWidget.setObjectName(
"objectexplorer_dockwidget")
self.objectexplorerDockWidget.setWidget(self.objectexplorer)
# plot widget
self.plot = PlotWidget(self.rootnode, self.settings, self)
# plot settings
self.plotsettings = PlotSettingsWidget(self.settings, self.plot, self)
self.plotsettingsDockWidget = QDockWidget(self.tr("plot settings"),
self)
self.plotsettingsDockWidget.setObjectName("plotsettings_dockwidget")
self.plotsettingsDockWidget.setWidget(self.plotsettings)
# log widget
self.loggingWidget = LoggingWidget(self)
self.loggingDockWidget = QDockWidget(self.tr("logger"), self)
self.loggingDockWidget.setObjectName("logging_dockwidget")
self.loggingDockWidget.setWidget(self.loggingWidget)
# record widget
self.recordWidget = RecordWidget(self.rootnode, self)
self.recordDockWidget = QDockWidget(self.tr("data recording"), self)
self.recordDockWidget.setObjectName("record_dockwidget")
self.recordDockWidget.setWidget(self.recordWidget)
# actions and menus
self._init_actions()
self._init_menus()
# statusbar
statusbar = self.statusBar()
statusbar.setVisible(True)
self.connectionstateLabel = QLabel(self.tr("Not connected"))
statusbar.addPermanentWidget(self.connectionstateLabel)
statusbar.showMessage(self.tr("Ready"))
# layout
self.setCentralWidget(self.plot)
self.addDockWidget(Qt.LeftDockWidgetArea,
self.objectexplorerDockWidget)
self.addDockWidget(Qt.LeftDockWidgetArea, self.plotsettingsDockWidget)
self.addDockWidget(Qt.BottomDockWidgetArea, self.loggingDockWidget)
self.addDockWidget(Qt.BottomDockWidgetArea, self.recordDockWidget)
self.load_settings()
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.recording_enabled = False
self.serial = serial.Serial()
self.rootnode = JsonNode('')
self._connected = False
self._dirty = False
self._filename = None
# settings
self.settings = QSettingsManager()
set_default_settings(self.settings)
# Controller Settings
self.settingsDialog = None
# object explorer
self.objectexplorer = ObjectExplorer(self.rootnode, self)
self.objectexplorer.nodevalue_changed.connect(self.send_serialdata)
self.objectexplorer.nodeproperty_changed.connect(self.set_dirty)
self.objectexplorerDockWidget = QDockWidget(self.tr("object explorer"),
self)
self.objectexplorerDockWidget.setObjectName(
"objectexplorer_dockwidget")
self.objectexplorerDockWidget.setWidget(self.objectexplorer)
# plot widget
self.plot = PlotWidget(self.rootnode, self.settings, self)
# plot settings
self.plotsettings = PlotSettingsWidget(self.settings, self.plot, self)
self.plotsettingsDockWidget = QDockWidget(self.tr("plot settings"),
self)
self.plotsettingsDockWidget.setObjectName("plotsettings_dockwidget")
self.plotsettingsDockWidget.setWidget(self.plotsettings)
# log widget
self.loggingWidget = LoggingWidget(self)
self.loggingDockWidget = QDockWidget(self.tr("logger"), self)
self.loggingDockWidget.setObjectName("logging_dockwidget")
self.loggingDockWidget.setWidget(self.loggingWidget)
# record widget
self.recordWidget = RecordWidget(self.rootnode, self)
self.recordDockWidget = QDockWidget(self.tr("data recording"), self)
self.recordDockWidget.setObjectName("record_dockwidget")
self.recordDockWidget.setWidget(self.recordWidget)
# actions and menus
self._init_actions()
self._init_menus()
# statusbar
statusbar = self.statusBar()
statusbar.setVisible(True)
self.connectionstateLabel = QLabel(self.tr("Not connected"))
statusbar.addPermanentWidget(self.connectionstateLabel)
statusbar.showMessage(self.tr("Ready"))
# layout
self.setCentralWidget(self.plot)
self.addDockWidget(Qt.LeftDockWidgetArea,
self.objectexplorerDockWidget)
self.addDockWidget(Qt.LeftDockWidgetArea, self.plotsettingsDockWidget)
self.addDockWidget(Qt.BottomDockWidgetArea, self.loggingDockWidget)
self.addDockWidget(Qt.BottomDockWidgetArea, self.recordDockWidget)
self.load_settings()
def _init_actions(self):
# Serial Dialog
self.serialdlgAction = QAction(self.tr("Serial Settings..."), self)
self.serialdlgAction.setShortcut("F6")
self.serialdlgAction.setIcon(QIcon(pixmap("configure.png")))
self.serialdlgAction.triggered.connect(self.show_serialdlg)
# Connect
self.connectAction = QAction(self.tr("Connect"), self)
self.connectAction.setShortcut("F5")
self.connectAction.setIcon(QIcon(pixmap("network-connect-3.png")))
self.connectAction.triggered.connect(self.toggle_connect)
# Quit
self.quitAction = QAction(self.tr("Quit"), self)
self.quitAction.setShortcut("Alt+F4")
self.quitAction.setIcon(QIcon(pixmap("window-close-3.png")))
self.quitAction.triggered.connect(self.close)
# Save Config as
self.saveasAction = QAction(self.tr("Save as..."), self)
self.saveasAction.setShortcut("Ctrl+Shift+S")
self.saveasAction.setIcon(QIcon(pixmap("document-save-as-5.png")))
self.saveasAction.triggered.connect(self.show_savecfg_dlg)
# Save file
self.saveAction = QAction(self.tr("Save"), self)
self.saveAction.setShortcut("Ctrl+S")
self.saveAction.setIcon(QIcon(pixmap("document-save-5.png")))
self.saveAction.triggered.connect(self.save_file)
# Load file
self.loadAction = QAction(self.tr("Open..."), self)
self.loadAction.setShortcut("Ctrl+O")
self.loadAction.setIcon(QIcon(pixmap("document-open-7.png")))
self.loadAction.triggered.connect(self.show_opencfg_dlg)
# New
self.newAction = QAction(self.tr("New"), self)
self.newAction.setShortcut("Ctrl+N")
self.newAction.setIcon(QIcon(pixmap("document-new-6.png")))
self.newAction.triggered.connect(self.new)
# start recording
self.startrecordingAction = QAction(self.tr("Start recording"), self)
self.startrecordingAction.setShortcut("F9")
self.startrecordingAction.setIcon(QIcon(pixmap("media-record-6.png")))
self.startrecordingAction.triggered.connect(self.start_recording)
# stop recording
self.stoprecordingAction = QAction(self.tr("Stop recording"), self)
self.stoprecordingAction.setShortcut("F10")
self.stoprecordingAction.setIcon(QIcon(pixmap("media-playback-stop-8.png")))
self.stoprecordingAction.setEnabled(False)
self.stoprecordingAction.triggered.connect(self.stop_recording)
# clear record
self.clearrecordAction = QAction(self.tr("Clear"), self)
self.clearrecordAction.setIcon(QIcon(pixmap("editclear.png")))
self.clearrecordAction.triggered.connect(self.clear_record)
# export record
self.exportcsvAction = QAction(self.tr("Export to csv..."), self)
self.exportcsvAction.setIcon(QIcon(pixmap("text_csv.png")))
self.exportcsvAction.triggered.connect(self.export_csv)
# show record settings
self.recordsettingsAction = QAction(self.tr("Settings..."), self)
self.recordsettingsAction.setIcon(QIcon(pixmap("configure.png")))
self.recordsettingsAction.triggered.connect(self.show_recordsettings)
# Info
self.infoAction = QAction(self.tr("Info"), self)
self.infoAction.setShortcut("F1")
self.infoAction.triggered.connect(self.show_info)
def _init_menus(self):
# file menu
self.fileMenu = self.menuBar().addMenu(self.tr("File"))
self.fileMenu.addAction(self.newAction)
self.fileMenu.addAction(self.loadAction)
self.fileMenu.addAction(self.saveAction)
self.fileMenu.addAction(self.saveasAction)
self.fileMenu.addSeparator()
self.fileMenu.addAction(self.connectAction)
self.fileMenu.addAction(self.serialdlgAction)
self.fileMenu.addSeparator()
self.fileMenu.addAction(self.quitAction)
# view menu
self.viewMenu = self.menuBar().addMenu(self.tr("View"))
self.viewMenu.addAction(
self.objectexplorerDockWidget.toggleViewAction())
self.viewMenu.addAction(self.plotsettingsDockWidget.toggleViewAction())
self.viewMenu.addAction(self.loggingDockWidget.toggleViewAction())
self.viewMenu.addAction(self.recordDockWidget.toggleViewAction())
# record menu
self.recordMenu = self.menuBar().addMenu(self.tr("Record"))
self.recordMenu.addAction(self.startrecordingAction)
self.recordMenu.addAction(self.stoprecordingAction)
self.recordMenu.addAction(self.exportcsvAction)
self.recordMenu.addSeparator()
self.recordMenu.addAction(self.clearrecordAction)
self.recordMenu.addSeparator()
self.recordMenu.addAction(self.recordsettingsAction)
# info menu
self.menuBar().addAction(self.infoAction)
def show_info(self):
QMessageBox.about(
self, QApplication.applicationName(),
"%s %s\n"
"Copyright (c) by %s" %
(
QCoreApplication.applicationName(),
QCoreApplication.applicationVersion(),
QCoreApplication.organizationName(),
)
)
def load_file(self, filename):
old_filename = self.filename if self.filename != filename else None
self.filename = filename
try:
with open(filename, 'rb') as f:
try:
self.objectexplorer.model().beginResetModel()
self.rootnode.load(bytearray_to_utf8(f.read()))
self.objectexplorer.model().endResetModel()
except ValueError as e:
critical(self, "File '%s' is not a valid config file."
% filename)
logger.error(str(e))
if old_filename is not None:
self.load_file(old_filename)
else:
self.filename = None
except FileNotFoundError as e:
logger.error(str(e))
self.filename = None
self.objectexplorer.refresh()
def load_settings(self):
settings = QSettings()
# window geometry
try:
self.restoreGeometry(settings.value(GEOMETRY_SETTING))
except:
logger.debug("error restoring window geometry")
# window state
try:
self.restoreState(settings.value(WINDOWSTATE_SETTING))
except:
logger.debug("error restoring window state")
# filename
self.filename = settings.value(FILENAME_SETTING)
if self.filename is not None:
self.load_file(self.filename)
def save_settings(self):
settings = QSettings()
settings.setValue(WINDOWSTATE_SETTING, self.saveState())
settings.setValue(GEOMETRY_SETTING, self.saveGeometry())
settings.setValue(FILENAME_SETTING, self.filename)
def closeEvent(self, event):
if self.dirty:
res = QMessageBox.question(
self,
QCoreApplication.applicationName(),
self.tr("Save changes to file '%s'?" %
self.filename
if self.filename is not None else "unknown"),
QMessageBox.Yes | QMessageBox.No | QMessageBox.Cancel
)
if res == QMessageBox.Cancel:
event.ignore()
return
elif res == QMessageBox.Yes:
self.save_file()
self.save_settings()
try:
self.worker.quit()
except AttributeError:
pass
try:
self.serial.close()
except (SerialException, AttributeError):
pass
def new(self):
self.objectexplorer.model().beginResetModel()
self.rootnode.clear()
self.objectexplorer.model().endResetModel()
def send_reset(self):
jsonstring = json.dumps({"resetpid": 1})
self.serial.write(bytearray(jsonstring, 'utf-8'))
def receive_serialdata(self, time, data):
self.loggingWidget.log_input(data)
try:
self.rootnode.from_json(data)
except ValueError as e:
logger.error(str(e))
# refresh widgets
self.objectexplorer.refresh()
self.plot.refresh(time)
if self.recording_enabled:
self.recordWidget.add_data(time, self.rootnode)
def send_serialdata(self, node):
if isinstance(node, JsonItem):
if self.serial.isOpen():
s = node.to_json()
self.serial.write(utf8_to_bytearray(s + '\n'))
self.loggingWidget.log_output(s.strip())
def show_serialdlg(self):
dlg = SerialDialog(self.settings, self)
dlg.exec_()
def toggle_connect(self):
if self.serial.isOpen():
self.disconnect()
else:
self.connect()
def connect(self):
# Load port setting
port = self.settings.get(PORT_SETTING)
baudrate = self.settings.get(BAUDRATE_SETTING)
# If no port has been selected before show serial settings dialog
if port is None:
if self.show_serialdlg() == QDialog.Rejected:
return
port = self.settings.get(PORT_SETTING)
baudrate = self.settings.get(BAUDRATE_SETTING)
# Serial connection
try:
self.serial.port = port
self.serial.baudrate = baudrate
self.serial.open()
except ValueError:
QMessageBox.critical(
self, QCoreApplication.applicationName(),
self.tr("Serial parameters e.g. baudrate, databits are out "
"of range.")
)
except SerialException:
QMessageBox.critical(
self, QCoreApplication.applicationName(),
self.tr("The device '%s' can not be found or can not be "
"configured." % port)
)
else:
self.worker = SerialWorker(self.serial, self)
self.worker.data_received.connect(self.receive_serialdata)
self.worker.start()
self.connectAction.setText(self.tr("Disconnect"))
self.connectAction.setIcon(QIcon(pixmap("network-disconnect-3.png")))
self.serialdlgAction.setEnabled(False)
self.connectionstateLabel.setText(
self.tr("Connected to %s") % port)
self._connected = True
self.objectexplorer.refresh()
def disconnect(self):
self.worker.quit()
self.serial.close()
self.connectAction.setText(self.tr("Connect"))
self.connectAction.setIcon(QIcon(pixmap("network-connect-3.png")))
self.serialdlgAction.setEnabled(True)
self.connectionstateLabel.setText(self.tr("Not connected"))
self._connected = False
self.objectexplorer.refresh()
def show_savecfg_dlg(self):
filename, _ = QFileDialog.getSaveFileName(
self, self.tr("Save configuration file..."),
directory=os.path.expanduser("~"),
filter="Json file (*.json)"
)
if filename:
self.filename = filename
self.save_file()
def save_file(self):
if self.filename is not None:
config_string = self.rootnode.dump()
with open(self.filename, 'w') as f:
f.write(config_string)
self.dirty = False
else:
self.show_savecfg_dlg()
def show_opencfg_dlg(self):
# show file dialog
filename, _ = QFileDialog.getOpenFileName(
self, self.tr("Open configuration file..."),
directory=os.path.expanduser("~"),
filter=self.tr("Json file (*.json);;All files (*.*)")
)
# load config file
if filename:
self.load_file(filename)
def refresh_window_title(self):
s = "%s %s" % (QCoreApplication.applicationName(),
QCoreApplication.applicationVersion())
if self.filename is not None:
s += " - " + self.filename
if self.dirty:
s += "*"
self.setWindowTitle(s)
def start_recording(self):
self.recording_enabled = True
self.startrecordingAction.setEnabled(False)
self.stoprecordingAction.setEnabled(True)
def stop_recording(self):
self.recording_enabled = False
self.startrecordingAction.setEnabled(True)
self.stoprecordingAction.setEnabled(False)
def export_csv(self):
filename, _ = QFileDialog.getSaveFileName(
self, QCoreApplication.applicationName(),
filter="CSV files(*.csv);;All files (*.*)"
)
if filename == "":
return
# get current dataframe and export to csv
df = self.recordWidget.dataframe
decimal = self.settings.get(DECIMAL_SETTING)
df = df.applymap(lambda x: str(x).replace(".", decimal))
df.to_csv(
filename, index_label="time",
sep=self.settings.get(SEPARATOR_SETTING)
)
def clear_record(self):
self.recordWidget.clear()
def show_recordsettings(self):
dlg = CSVSettingsDialog(self)
dlg.exec_()
# filename property
@property
def filename(self):
return self._filename
@filename.setter
def filename(self, value=""):
self._filename = value
self.refresh_window_title()
# dirty property
@property
def dirty(self):
return self._dirty
@dirty.setter
def dirty(self, value):
self._dirty = value
self.refresh_window_title()
def set_dirty(self):
self.dirty = True
# connected property
@property
def connected(self):
return self._connected