private void AddAnswer(AnswerViewModel answer)
{
AttachEvents(answer);
_answers.Add(answer);
RaiseAnswerAdded(answer.Answer);
_logger.Log(Level.Trace, "Added a new answer to the question.");
}
private void DettachEvents(AnswerViewModel answer)
{
answer.PropertyChanged -= AnswerPropertyChanged;
answer.IsDirtyChangedEvent -= IsDirtyHandler;
answer.RequestsRemovalEvent -= RequestAnswerRemoval;
}
private void RequestAnswerAddition()
{
AnswerViewModel vm = new AnswerViewModel(
new Answer(),
_answerValidator,
_subjectValidator,
_subjectQuery,
_busId
);
AddAnswer(vm);
CollectionViewSource.GetDefaultView(_answers).MoveCurrentTo(vm);
}
private void RemoveAnswer(AnswerViewModel answer)
{
DettachEvents(answer);
_answers.Remove(answer);
RaiseAnswerRemoved(answer.Answer);
_logger.Log(Level.Trace, "Removed an answer from the question.");
}