Undo: update notes field if changed by undo commands

To keep the UI in a consistent state, update the notes field if
it is changed by an undo command. To that purpose, add a new
signal to diveListNotifier with a list of dives and a field-id
as payload.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

desktop-widgets/command_edit.cpp

@@ -57,6 +57,8 @@ void EditBase<T>::undo()
 
 	std::swap(old, value);
 
+	emit diveListNotifier.divesEdited(QVector<dive *>::fromStdVector(dives), fieldId());
+
 	mark_divelist_changed(true);
 }
 
@@ -90,4 +92,9 @@ QString EditNotes::fieldName() const
 	return tr("notes");
 }
 
+DiveField EditNotes::fieldId() const
+{
+	return DiveField::NOTES;
+}
+
 } // namespace Command