def setData(self, index, value, role=QtCore.Qt.EditRole, update=True):
"""Change a data element of the flight track; overrides the
corresponding QAbstractTableModel method.
NOTE: Performance computations loose their validity if a change is made.
"""
if index.isValid() and 0 <= index.row() < len(self.waypoints):
waypoint = self.waypoints[index.row()]
column = index.column()
index2 = index # in most cases only one field is being changed
if column == LOCATION:
waypoint.location = variant_to_string(value)
elif column == LAT:
try:
# The table fields accept basically any input.
# If the string cannot be converted to "float" (raises ValueError), the user input is discarded.
value = variant_to_float(value)
except TypeError as ex:
logging.error("unexpected error: %s %s %s %s", type(ex),
ex, type(value), value)
except ValueError as ex:
logging.error("%s", ex)
else:
waypoint.lat = value
waypoint.location = ""
loc = find_location(waypoint.lat, waypoint.lon, 1e-3)
if loc is not None:
waypoint.lat, waypoint.lon = loc[0]
waypoint.location = loc[1]
# A change of position requires an update of the distances.
if update:
self.update_distances(index.row())
# Notify the views that items between the edited item and
# the distance item of the corresponding waypoint have been
# changed.
# Delete the location name -- it won't be valid anymore
# after its coordinates have been changed.
index2 = self.createIndex(index.row(), LOCATION)
elif column == LON:
try:
# The table fields accept basically any input.
# If the string cannot be converted to "float" (raises ValueError), the user input is discarded.
value = variant_to_float(value)
except TypeError as ex:
logging.error("unexpected error: %s %s %s %s", type(ex),
ex, type(value), value)
except ValueError as ex:
logging.error("%s", ex)
else:
waypoint.lon = value
waypoint.location = ""
loc = find_location(waypoint.lat, waypoint.lon, 1e-3)
if loc is not None:
waypoint.lat, waypoint.lon = loc[0]
waypoint.location = loc[1]
if update:
self.update_distances(index.row())
index2 = self.createIndex(index.row(), LOCATION)
elif column == FLIGHTLEVEL:
try:
# The table fields accept basically any input.
# If the string cannot be converted to "float" (raises ValueError), the user input is discarded.
flightlevel = variant_to_float(value)
pressure = float(
thermolib.flightlevel2pressure(flightlevel))
except TypeError as ex:
logging.error("unexpected error: %s %s %s %s", type(ex),
ex, type(value), value)
except ValueError as ex:
logging.error("%s", ex)
else:
waypoint.flightlevel = flightlevel
waypoint.pressure = pressure
if update:
self.update_distances(index.row())
# need to notify view of the second item that has been
# changed as well.
index2 = self.createIndex(index.row(), PRESSURE)
elif column == PRESSURE:
try:
# The table fields accept basically any input.
# If the string cannot be converted to "float" (raises ValueError), the user input is discarded.
pressure = variant_to_float(
value) * 100 # convert hPa to Pa
if pressure > 200000:
raise ValueError
flightlevel = float(
round(thermolib.pressure2flightlevel(pressure)))
pressure = float(
thermolib.flightlevel2pressure(flightlevel))
except TypeError as ex:
logging.error("unexpected error: %s %s %s %s", type(ex),
ex, type(value), value)
except ValueError as ex:
logging.error("%s", ex)
else:
waypoint.pressure = pressure
waypoint.flightlevel = flightlevel
if update:
self.update_distances(index.row())
index2 = self.createIndex(index.row(), FLIGHTLEVEL)
else:
waypoint.comments = variant_to_string(value)
self.modified = True
# Performance computations loose their validity if a change is made.
if update:
self.dataChanged.emit(index, index2)
return True
return False
def test_variant_to_string():
for value, variant in [("5", "5"), ("5", "5"), (u"öäü", u"öäü"), ("abc", "abc")]:
conv_value = mqt.variant_to_string(pqt.QtCore.QVariant(variant))
assert value == conv_value