/// <summary>
/// Protected constructor for Answer objects.
/// Answer objects need not be constructed directly by callers;
/// use AnswerCollection.CreateAnswer() instead.
/// </summary>
/// <param name="parent">The AnswerCollection the answer should be a part of.</param>
/// <param name="name">The answer name.</param>
protected Answer(AnswerCollection parent, string name)
{
_coll = parent;
_name = name;
_save = (!String.IsNullOrEmpty(name) && _name[0] != '(');
_userExtendible = true;
}
/// <summary>
/// Gets the parent of the requested node,
/// and deletes the indicated child iteration.
/// </summary>
/// <include file="../Shared/Help.xml" path="Help/intAry/param[@name='rptIdx']"/>
public override void DeleteIteration(int[] rptIdx)
{
// get the parent of the requested node,
// and delete the indicated child iteration
int iterationToDelete;
int[] parIdx = TrimIndices(IndexTrimOptions.TruncateLastIndex, out iterationToDelete, rptIdx);
if (iterationToDelete < 0) // there is no iteration to be deleted!
{
return;
}
ValueNode <T> parentNode = GetNode(GetNodeOptions.NoBubbleAndFlow, parIdx);
if (parentNode == null || parentNode.Children == null || iterationToDelete >= parentNode.Children.SetCount)
{
return;
}
parentNode.Children.RemoveAt(iterationToDelete);
if (AnswerCollection != null)
{
AnswerCollection.OnAnswerChanged(this, rptIdx, ValueChangeType.IndexShift);
}
}
/// <summary>
/// Gets the parent of the requested node,
/// and inserts an unanswered child iteration at the requested index.
/// </summary>
/// <include file="../Shared/Help.xml" path="Help/intAry/param[@name='rptIdx']"/>
public override void InsertIteration(int[] rptIdx)
{
// get the parent of the requested node,
// and insert an unanswered child iteration at the requested index
int iterationToInsert;
int[] parIdx = TrimIndices(IndexTrimOptions.TruncateLastIndex, out iterationToInsert, rptIdx);
if (iterationToInsert < 0) // there is no iteration before which to insert!
{
return;
}
ValueNode <T> parentNode = GetNode(GetNodeOptions.NoBubbleAndFlow, parIdx);
if (parentNode == null || parentNode.Children == null || iterationToInsert >= parentNode.Children.SetCount)
{
return;
}
parentNode.Children.Insert(iterationToInsert, new ValueNode <T>());
if (AnswerCollection != null)
{
AnswerCollection.OnAnswerChanged(this, rptIdx, ValueChangeType.IndexShift);
}
}
/// <summary>
/// Gets the parent of the requested node, and removes the indicated child iteration from the parent, and re-inserts it at the indicated new position.
/// </summary>
/// <include file="../Shared/Help.xml" path="Help/intAry/param[@name='rptIdx']"/>
/// <param name="newPosition">newPosition</param>
public override void MoveIteration(int[] rptIdx, int newPosition)
{
if (newPosition < 0)
{
throw new ArgumentException("Cannot move repeated data before the first repeat iteration.", "newPosition");
}
// get the parent of the requested node,
// removes the indicated child iteration from the parent,
// and re-inserts it at the indicated new position
int iterationToMove;
int[] parIdx = TrimIndices(IndexTrimOptions.TruncateLastIndex, out iterationToMove, rptIdx);
if (iterationToMove < 0) // there is no iteration to be moved!
{
return;
}
ValueNode <T> parentNode = GetNode(GetNodeOptions.NoBubbleAndFlow, parIdx);
if (parentNode == null || parentNode.Children == null ||
(newPosition < iterationToMove && newPosition >= parentNode.Children.SetCount) || // move up
(newPosition > iterationToMove && iterationToMove >= parentNode.Children.SetCount)) // move down
{
// nothing to do
return;
}
int maxIteration = Math.Max(iterationToMove, newPosition);
if (maxIteration >= parentNode.Children.SetCount)
{
//[LRS] Need to be able to do the following! (Because other answers in same iteration may be moving.)
//throw new ArgumentException("Cannot move repeated data after the final repeat iteration.", "newPosition");
parentNode.Children.PrepareForIndex(maxIteration);
}
ValueNode <T> movedNode = parentNode.Children.RemoveAt(iterationToMove);
parentNode.Children.Insert(newPosition, movedNode);
if (AnswerCollection != null)
{
AnswerCollection.OnAnswerChanged(this, rptIdx, ValueChangeType.IndexShift);
}
}
public TypedAnswer(AnswerCollection set, string name)
: base(set, name)
{
_value = new ValueNode <T>();
}
// Factory method:
internal static Answer Create <T>(AnswerCollection parent, string name) where T : IValue
{
return(new TypedAnswer <T>(parent, name));
}