public QuestionBase()
{
questions = new List<QuestionBase>();
_form = null;
_parent = null;
_title = "default Titlte";
}
public AnswerBase AddAnswerFor( QuestionBase question)
{
AnswerBase answer = question.GetAnswerInstance(this);
if( _answers.ContainsKey(question))
_answers[question] = answer;
else
_answers.Add(question, answer);
return answer;
}
public QuestionBase(string title, QuestionBase parent = null)
{
if( String.IsNullOrEmpty( title ) )
throw new ArgumentException( "title", "title MUST NOT be NULL or EMPTY!" );
questions = new List<QuestionBase>();
_form = null;
_parent = parent;
_title = title;
}
public AnswerBase FindAnswer(QuestionBase question)
{
return _answers.ContainsKey(question)? _answers[question]:null;
}
public SectionQuestion(string title,QuestionBase parent=null)
: base(title,parent)
{
}
public void RemoveQuestion( QuestionBase question )
{
if( question == null )
throw new ArgumentNullException( "question", "question MUST NOT be NULL!" );
if( !Contains( question ) )
throw new ArgumentException( "question", "question CANNOT BE REMOVED as it DOES NOT EXIST" );
question.Parent = null;
}
public bool Contains( QuestionBase question )
{
if( question == null )
throw new ArgumentNullException( "question", "question MUST NOT be NULL!" );
if( question.Parent == null )
return false;
else if( question.Parent != this)
return this.Contains( question.Parent );
else
return true;
}
public void AddNewQuestion( QuestionBase question )
{
if( question == null )
throw new ArgumentNullException( "question", "question MUST NOT be NULL!" );
if( Contains( question ) )
throw new ArgumentException( "question", "question CANNOT be ADDED as it ALREADY EXISTS!" );
question.Parent = this;
}