def construct(self):
item = self.item
subject = item.subject
if not subject or item.is_communication():
return
builder = new_builder("message-editor")
sort_data = self.MESSAGE_SORT
lifeline = get_lifeline(item, item.tail)
# disallow connecting two delete messages to a lifeline
if (lifeline and lifeline.is_destroyed
and subject.messageSort != "deleteMessage"):
sort_data = list(sort_data)
assert sort_data[4][1] == "deleteMessage"
del sort_data[4]
self.model = ComboModel(sort_data)
combo = builder.get_object("message-combo")
combo.set_model(self.model)
index = self.model.get_index(subject.messageSort)
combo.set_active(index)
builder.connect_signals(
{"message-combo-changed": (self._on_message_sort_change, )})
return builder.get_object("message-editor")
def _on_message_sort_change(self, combo):
"""Update message item's message sort information."""
ms = self.model.get_value(combo.get_active())
item = self.item
subject = item.subject
lifeline = get_lifeline(item, item.tail)
# allow only one delete message to connect to lifeline's lifetime
# destroyed status can be changed only by delete message itself
if lifeline and (subject.messageSort == "deleteMessage"
or not lifeline.is_destroyed):
is_destroyed = ms == "deleteMessage"
lifeline.is_destroyed = is_destroyed
lifeline.request_update()
subject.messageSort = ms
item.request_update()