public void createNewRepeat(FormIndex index) throws InvalidReferenceException {
TreeReference destRef = getChildInstanceRef(index);
TreeElement template = instance.getTemplate(destRef);
instance.copyNode(template, destRef);
preloadInstance(instance.resolveReference(destRef));
triggerTriggerables(destRef); // trigger conditions that depend on the creation of this new node
initializeTriggerables(destRef); // initialize conditions for the node (and sub-nodes)
}
/**
* Deletes the inner-most repeat that this node belongs to and returns the corresponding
* FormIndex. Behavior is currently undefined if you call this method on a node that is not
* contained within a repeat.
*
* @param index
* @return
*/
public FormIndex deleteRepeat(FormIndex index) {
Vector indexes = new Vector();
Vector multiplicities = new Vector();
Vector elements = new Vector();
collapseIndex(index, indexes, multiplicities, elements);
// loop backwards through the elements, removing objects from each
// vector, until we find a repeat
// TODO: should probably check to make sure size > 0
for (int i = elements.size() - 1; i >= 0; i--) {
IFormElement e = (IFormElement) elements.elementAt(i);
if (e instanceof GroupDef && ((GroupDef) e).getRepeat()) {
break;
} else {
indexes.removeElementAt(i);
multiplicities.removeElementAt(i);
elements.removeElementAt(i);
}
}
// build new formIndex which includes everything
// up to the node we're going to remove
FormIndex newIndex = buildIndex(indexes, multiplicities, elements);
TreeReference deleteRef = getChildInstanceRef(newIndex);
TreeElement deleteElement = instance.resolveReference(deleteRef);
TreeReference parentRef = deleteRef.getParentRef();
TreeElement parentElement = instance.resolveReference(parentRef);
int childMult = deleteElement.getMult();
parentElement.removeChild(deleteElement);
// update multiplicities of other child nodes
for (int i = 0; i < parentElement.getNumChildren(); i++) {
TreeElement child = parentElement.getChildAt(i);
if (child.getMult() > childMult) {
child.setMult(child.getMult() - 1);
}
}
triggerTriggerables(deleteRef);
return newIndex;
}
public void copyItemsetAnswer(QuestionDef q, TreeElement targetNode, IAnswerData data)
throws InvalidReferenceException {
ItemsetBinding itemset = q.getDynamicChoices();
TreeReference targetRef = targetNode.getRef();
TreeReference destRef = itemset.getDestRef().contextualize(targetRef);
Vector<Selection> selections = null;
Vector<String> selectedValues = new Vector<String>();
if (data instanceof SelectMultiData) {
selections = (Vector<Selection>) data.getValue();
} else if (data instanceof SelectOneData) {
selections = new Vector<Selection>();
selections.addElement((Selection) data.getValue());
}
if (itemset.valueRef != null) {
for (int i = 0; i < selections.size(); i++) {
selectedValues.addElement(selections.elementAt(i).choice.getValue());
}
}
// delete existing dest nodes that are not in the answer selection
Hashtable<String, TreeElement> existingValues = new Hashtable<String, TreeElement>();
Vector<TreeReference> existingNodes = getInstance().expandReference(destRef);
for (int i = 0; i < existingNodes.size(); i++) {
TreeElement node = getInstance().resolveReference(existingNodes.elementAt(i));
if (itemset.valueRef != null) {
String value =
itemset
.getRelativeValue()
.evalReadable(
this.getInstance(), new EvaluationContext(exprEvalContext, node.getRef()));
if (selectedValues.contains(value)) {
existingValues.put(value, node); // cache node if in selection and already exists
}
}
// delete from target
targetNode.removeChild(node);
}
// copy in nodes for new answer; preserve ordering in answer
for (int i = 0; i < selections.size(); i++) {
Selection s = selections.elementAt(i);
SelectChoice ch = s.choice;
TreeElement cachedNode = null;
if (itemset.valueRef != null) {
String value = ch.getValue();
if (existingValues.containsKey(value)) {
cachedNode = existingValues.get(value);
}
}
if (cachedNode != null) {
cachedNode.setMult(i);
targetNode.addChild(cachedNode);
} else {
getInstance().copyItemsetNode(ch.copyNode, destRef, this);
}
}
triggerTriggerables(
destRef); // trigger conditions that depend on the creation of these new nodes
initializeTriggerables(destRef); // initialize conditions for the node (and sub-nodes)
// not 100% sure this will work since destRef is ambiguous as the last step, but i think it's
// supposed to work
}
public void setValue(IAnswerData data, TreeReference ref, TreeElement node) {
setAnswer(data, node);
triggerTriggerables(ref);
// TODO: pre-populate fix-count repeats here?
}