/**
* reduce a SelectMultiData to a vector of integers (index mode) or strings (value mode)
* @param data
* @return
*/
private ArrayList compactSelectMulti(SelectMultiData data)
{
ArrayList val = (ArrayList)data.Value;
ArrayList choices = new ArrayList();
for (int i = 0; i < val.Count; i++)
{
choices.Add(extractSelection((Selection)val[i]));
}
return(choices);
}
/**
* @param data The AnswerDataObject to be serialized
* @return A string containing the xforms compliant format
* for a <select> tag, a string containing a list of answers
* separated by space characters.
*/
public Object serializeAnswerData(SelectMultiData data)
{
ArrayList selections = (ArrayList)data.Value;
IEnumerator en = selections.GetEnumerator();
StringBuilder selectString = new StringBuilder();
while (en.MoveNext())
{
Selection selection = (Selection)en.Current;
if (selectString.Length > 0)
{
selectString.Append(DELIMITER);
}
selectString.Append(selection.Value);
}
//As Crazy, and stupid, as it sounds, this is the XForms specification
//for storing multiple selections.
return(selectString.ToString());
}
