class FocusPresenter(object):
def __init__(self, model, view):
self.model = model
self.view = view
self.worker = None
self.calibration_observer = CalibrationObserver(self)
# Observable Setup
self.focus_run_notifier = GenericObservable()
# Connect view signals to local methods.
self.view.set_on_focus_clicked(self.on_focus_clicked)
self.view.set_enable_controls_connection(
self.set_focus_controls_enabled)
# Variables from other GUI tabs.
self.current_calibration = CalibrationInfo()
self.instrument = "ENGINX"
self.rb_num = None
last_van_path = get_setting(output_settings.INTERFACES_SETTINGS_GROUP,
output_settings.ENGINEERING_PREFIX,
"last_vanadium_run")
if last_van_path:
self.view.set_van_file_text_with_search(last_van_path)
def add_focus_subscriber(self, obs):
self.focus_run_notifier.add_subscriber(obs)
def on_focus_clicked(self):
if not self._validate():
return
regions_dict = self.current_calibration.create_focus_roi_dictionary()
focus_paths = self.view.get_focus_filenames()
van_path = self.view.get_vanadium_filename()
if self._number_of_files_warning(focus_paths):
self.start_focus_worker(focus_paths, van_path,
self.view.get_plot_output(), self.rb_num,
regions_dict)
van_run = self.view.get_vanadium_run()
set_setting(output_settings.INTERFACES_SETTINGS_GROUP,
output_settings.ENGINEERING_PREFIX, "last_vanadium_run",
van_run)
def start_focus_worker(self, focus_paths: list, van_path: str,
plot_output: bool, rb_num: str,
regions_dict: dict) -> None:
"""
Focus data in a separate thread to stop the main GUI from hanging.
:param focus_paths: List of paths to the files containing the data to focus.
:param plot_output: True if the output should be plotted.
:param rb_num: The RB Number from the main window (often an experiment id)
:param regions_dict: Dictionary containing the regions to focus over, mapping region_name -> grouping_ws_name
"""
self.worker = AsyncTask(self.model.focus_run,
(focus_paths, van_path, plot_output,
self.instrument, rb_num, regions_dict),
error_cb=self._on_worker_error,
finished_cb=self._on_worker_success)
self.set_focus_controls_enabled(False)
self.worker.start()
def _on_worker_success(self):
self.emit_enable_button_signal()
self.focus_run_notifier.notify_subscribers(
self.model.get_last_focused_files())
def set_instrument_override(self, instrument):
instrument = INSTRUMENT_DICT[instrument]
self.view.set_instrument_override(instrument)
self.instrument = instrument
def set_rb_num(self, rb_num):
self.rb_num = rb_num
def _validate(self):
"""
Ensure that the worker is ready to be started.
:return: True if the worker can be started safely.
"""
if self.view.is_searching():
create_error_message(
self.view, "Mantid is searching for data files. Please wait.")
return False
if not self.view.get_focus_valid():
create_error_message(self.view, "Check run numbers/path is valid.")
return False
if not self.view.get_vanadium_valid():
create_error_message(self.view,
"Check vanadium run number/path is valid.")
return False
if not self.current_calibration.is_valid():
create_error_message(
self.view,
"Create or Load a calibration via the Calibration tab before focusing."
)
return False
if self.current_calibration.get_instrument() != self.instrument:
create_error_message(
self.view,
"Please make sure the selected instrument matches instrument for the current calibration.\n"
"The instrument for the current calibration is: " +
self.current_calibration.get_instrument())
return False
return True
def _number_of_files_warning(self, paths):
if len(
paths
) > 10: # Just a guess on the warning for now. May change in future.
response = QMessageBox.warning(
self.view, 'Engineering Diffraction - Warning',
'You are attempting to focus {} workspaces. This may take some time.\n\n Would you like to continue?'
.format(len(paths)), QMessageBox.Ok | QMessageBox.Cancel)
return response == QMessageBox.Ok
else:
return True
def _on_worker_error(self, error_info):
logger.error(str(error_info))
self.emit_enable_button_signal()
def set_focus_controls_enabled(self, enabled):
self.view.set_focus_button_enabled(enabled)
self.view.set_plot_output_enabled(enabled)
def emit_enable_button_signal(self):
self.view.sig_enable_controls.emit(True)
def update_calibration(self, calibration):
"""
Update the current calibration following an call from a CalibrationNotifier
:param calibration: The new current calibration.
"""
self.current_calibration = calibration
region_text = calibration.get_roi_text()
self.view.set_region_display_text(region_text)
class FocusPresenter(object):
def __init__(self, model, view):
self.model = model
self.view = view
self.worker = None
self.calibration_observer = self.CalibrationObserver(self)
# Connect view signals to local methods.
self.view.set_on_focus_clicked(self.on_focus_clicked)
self.view.set_enable_controls_connection(self.set_focus_controls_enabled)
self.view.set_on_check_cropping_state_changed(self.show_cropping)
# Variables from other GUI tabs.
self.current_calibration = CalibrationInfo()
self.instrument = "ENGINX"
self.rb_num = None
# Cropping Options
self.cropping_widget = CroppingWidget(self.view, view=self.view.get_cropping_widget())
self.show_cropping(False)
def on_focus_clicked(self):
if not self._validate():
return
banks, spectrum_numbers = self._get_banks()
focus_paths = self.view.get_focus_filenames()
if self._number_of_files_warning(focus_paths):
self.start_focus_worker(focus_paths, banks, self.view.get_plot_output(), self.rb_num, spectrum_numbers)
def start_focus_worker(self, focus_paths, banks, plot_output, rb_num, spectrum_numbers=None):
"""
Focus data in a separate thread to stop the main GUI from hanging.
:param focus_paths: List of paths to the files containing the data to focus.
:param banks: A list of banks that are to be focused.
:param plot_output: True if the output should be plotted.
:param rb_num: The RB Number from the main window (often an experiment id)
:param spectrum_numbers: Optional parameter to crop to a specific list of spectrum numbers.
"""
self.worker = AsyncTask(self.model.focus_run,
(focus_paths, banks, plot_output, self.instrument, rb_num, spectrum_numbers),
error_cb=self._on_worker_error,
finished_cb=self.emit_enable_button_signal)
self.set_focus_controls_enabled(False)
self.worker.start()
def set_instrument_override(self, instrument):
instrument = INSTRUMENT_DICT[instrument]
self.view.set_instrument_override(instrument)
self.instrument = instrument
def set_rb_num(self, rb_num):
self.rb_num = rb_num
def _validate(self):
"""
Ensure that the worker is ready to be started.
:return: True if the worker can be started safely.
"""
if self.view.is_searching():
create_error_message(self.view, "Mantid is searching for data files. Please wait.")
return False
if not self.view.get_focus_valid():
create_error_message(self.view, "Check run numbers/path is valid.")
return False
if not check_workspaces_exist() or not self.current_calibration.is_valid():
create_error_message(
self.view, "Create or Load a calibration via the Calibration tab before focusing.")
return False
if self.current_calibration.get_instrument() != self.instrument:
create_error_message(
self.view,
"Please make sure the selected instrument matches instrument for the current calibration.\n"
"The instrument for the current calibration is: " + self.current_calibration.get_instrument())
return False
if self.view.get_crop_checked() and not self.cropping_widget.is_valid():
create_error_message(self.view, "Check cropping values are valid.")
return False
return True
def _number_of_files_warning(self, paths):
if len(paths) > 10: # Just a guess on the warning for now. May change in future.
response = QMessageBox.warning(
self.view, 'Engineering Diffraction - Warning',
'You are attempting to focus {} workspaces. This may take some time.\n\n Would you like to continue?'
.format(len(paths)), QMessageBox.Ok | QMessageBox.Cancel)
return response == QMessageBox.Ok
else:
return True
def _on_worker_error(self, _):
self.emit_enable_button_signal()
def set_focus_controls_enabled(self, enabled):
self.view.set_focus_button_enabled(enabled)
self.view.set_plot_output_enabled(enabled)
def _get_banks(self):
if self.view.get_crop_checked():
if self.cropping_widget.is_custom():
return None, self.cropping_widget.get_custom_spectra()
else:
return [self.cropping_widget.get_bank()], None
else:
return ["1", "2"], None
def emit_enable_button_signal(self):
self.view.sig_enable_controls.emit(True)
def update_calibration(self, calibration):
"""
Update the current calibration following an call from a CalibrationNotifier
:param calibration: The new current calibration.
"""
self.current_calibration = calibration
def show_cropping(self, visible):
self.view.set_cropping_widget_visibility(visible)
# -----------------------
# Observers / Observables
# -----------------------
class CalibrationObserver(Observer):
def __init__(self, outer):
Observer.__init__(self)
self.outer = outer
def update(self, observable, calibration):
self.outer.update_calibration(calibration)