def assign_notification_states_before(self, model, prop_name, info):
if self.busy: # if proceeding undo or redo
return
else:
# avoid to vast computation time
if 'kwargs' in info and 'method_name' in info['kwargs'] and \
info['kwargs']['method_name'] in BY_EXECUTION_TRIGGERED_OBSERVABLE_STATE_METHODS:
return
overview = NotificationOverview(info)
# skipped state modifications
if not overview.get_change(
) == 'state_change' or overview.get_cause() == 'parent':
return
# increase counter and generate new action if not locked by action that is performed
if self.locked:
self.before_count()
else:
if self.start_new_action(overview):
self.before_count()
else:
logger.error(
"FAILED to start NEW HISTORY ELEMENT [states]")
def assign_notification_states_after(self, model, prop_name, info):
"""
This method is called, when any state, transition, data flow, etc. within the state machine modifications. This
then typically requires a redraw of the graphical editor, to display these modifications immediately.
:param model: The state machine model
:param prop_name: The property that was changed
:param info: Information about the change
"""
if self.busy or info.method_name == 'state_change' and \
info.kwargs.prop_name == 'state' and \
info.kwargs.method_name in BY_EXECUTION_TRIGGERED_OBSERVABLE_STATE_METHODS:
return
else:
# avoid to vast computation time
if 'kwargs' in info and 'method_name' in info['kwargs'] and \
info['kwargs']['method_name'] in BY_EXECUTION_TRIGGERED_OBSERVABLE_STATE_METHODS:
return
overview = NotificationOverview(info)
# handle interrupts of action caused by exceptions
if overview.get_result() == "CRASH in FUNCTION" or isinstance(
overview.get_result(), Exception):
if self.count_before == 1:
return self._interrupt_active_action(info)
pass
# modifications of parent are not observed
if not overview.get_change(
) == 'state_change' or overview.get_cause() == 'parent':
return
# decrease counter and finish action if count_before = 0
if self.locked:
self.after_count()
if self.count_before == 0:
self.finish_new_action(overview)
else:
logger.error(
"HISTORY after not count [states] -> For every before there should be a after."
)
