/// <summary>
/// Refetch the answer to the provided <see cref="SurveyName"/> property in a copy of this node.
/// </summary>
/// <param name="surveyTree">The owning <see cref="SurveyTree{SurveyContextType}"/> container</param>
/// <param name="contextElement">The parent element, or null for a root expansion context</param>
/// <param name="survey">survey</param>
/// <param name="questionTypes">types of the questions that are affected by the change</param>
/// <returns>A new <see cref="SampleDataElementNode"/>. This node is not modified.</returns>
public SampleDataElementNode UpdateAnswers(SurveyTree <SurveyContextType> surveyTree, object contextElement, Survey survey, Type[] questionTypes)
{
SampleDataElementNode node = new SampleDataElementNode(surveyTree, contextElement, myElement, myNodeData, myDisplayText, myCustomSortData, false);
node.Update(questionTypes, contextElement, survey);
return(node);
}
/// <summary>
/// Private constructor
/// </summary>
private SampleDataElementNode(SurveyTree <SurveyContextType> surveyTree, object contextElement, object element, int nodeData, string displayText, object customSortData, bool verifyReferences)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
myElement = element;
myNodeData = nodeData;
ISurveyNodeReference reference = element as ISurveyNodeReference;
object referencedElement = (reference == null) ? null : reference.ReferencedElement;
if (verifyReferences && referencedElement != null)
{
surveyTree.VerifyReferenceTarget(referencedElement);
}
if (displayText == null)
{
object textElement = element;
ISurveyNode node = textElement as ISurveyNode;
object resolvedReferencedElement = referencedElement;
if (node == null ||
null == (displayText = node.SurveyName))
{
do
{
if (null == resolvedReferencedElement ||
null == (node = (textElement = resolvedReferencedElement) as ISurveyNode) ||
null == (displayText = node.SurveyName))
{
ISurveyNodeReference nextReference;
if (null != (resolvedReferencedElement = (null != (nextReference = resolvedReferencedElement as ISurveyNodeReference)) ? nextReference.ReferencedElement : null))
{
continue;
}
displayText = textElement.ToString();
break;
}
} while (displayText == null && resolvedReferencedElement != null);
}
}
myDisplayText = displayText;
myCustomSortData = customSortData;
if (null == customSortData)
{
ICustomComparableSurveyNode customCompare = element as ICustomComparableSurveyNode;
if (null != customCompare)
{
customCompare.ResetCustomSortData(contextElement, ref myCustomSortData);
}
}
if (verifyReferences && referencedElement != null)
{
// Add a link relating the target element to this node. Note that we're fully constructed at this point
Dictionary <object, LinkedNode <SurveyNodeReference> > links = surveyTree.myReferenceDictionary;
SurveyNodeReference newReference = new SurveyNodeReference(this, contextElement);
LinkedNode <SurveyNodeReference> firstLink = null;
if (links.TryGetValue(referencedElement, out firstLink))
{
LinkedNode <SurveyNodeReference> existingLink = firstLink;
while (existingLink != null)
{
SurveyNodeReference testRef = existingLink.Value;
if ((contextElement == null ? testRef.ContextElement == null : contextElement.Equals(testRef.ContextElement)) &&
element.Equals(testRef.Node.Element))
{
existingLink.Value = newReference;
return;
}
existingLink = existingLink.Next;
}
}
LinkedNode <SurveyNodeReference> newLink = new LinkedNode <SurveyNodeReference>(newReference);
newLink = new LinkedNode <SurveyNodeReference>(newReference);
if (firstLink != null)
{
newLink.SetNext(firstLink, ref firstLink);
}
links[referencedElement] = newLink;
}
}
/// <summary>
/// Refetch the current settings of the <see cref="SurveyName"/> property
/// </summary>
/// <param name="surveyTree">The owning <see cref="SurveyTree{SurveyContextType}"/> container</param>
/// <param name="contextElement">The parent element, or null for a root expansion context</param>
/// <param name="customSortData">Updated sort data</param>
/// <returns>A new <see cref="SampleDataElementNode"/>. This node is not modified.</returns>
public SampleDataElementNode UpdateCustomSortData(SurveyTree <SurveyContextType> surveyTree, object contextElement, object customSortData)
{
return(new SampleDataElementNode(surveyTree, contextElement, myElement, myNodeData, myDisplayText, customSortData, false));
}
/// <summary>
/// Refetch the current settings of the <see cref="SurveyName"/> property
/// </summary>
/// <param name="surveyTree">The owning <see cref="SurveyTree{SurveyContextType}"/> container</param>
/// <param name="contextElement">The parent element, or null for a root expansion context</param>
/// <returns>A new <see cref="SampleDataElementNode"/>. This node is not modified.</returns>
public SampleDataElementNode UpdateSurveyName(SurveyTree <SurveyContextType> surveyTree, object contextElement)
{
return(new SampleDataElementNode(surveyTree, contextElement, myElement, myNodeData, null, myCustomSortData, false));
}
/// <summary>
/// Create a new <see cref="SampleDataElementNode"/>
/// </summary>
/// <param name="surveyTree">The owning <see cref="SurveyTree{SurveyContextType}"/> container</param>
/// <param name="survey">The <see cref="Survey"/> this node is associated with</param>
/// <param name="contextElement">The parent element, or null for a root expansion context</param>
/// <param name="element">The element to create a node for</param>
/// <returns>A fully initialized <see cref="SampleDataElementNode"/>.</returns>
public static SampleDataElementNode Create(SurveyTree <SurveyContextType> surveyTree, Survey survey, object contextElement, object element)
{
return(new SampleDataElementNode(surveyTree, contextElement, element, InitializeNodeData(element, contextElement, survey), null, null, true));
}
