/**
* @param index
* @return
*/
public TreeReference getChildInstanceRef(FormIndex index) {
Vector indexes = new Vector();
Vector multiplicities = new Vector();
Vector elements = new Vector();
collapseIndex(index, indexes, multiplicities, elements);
return getChildInstanceRef(elements, multiplicities);
}
/**
* Dereference the form index and return a Vector of all interstitial nodes (top-level parent
* first; index target last)
*
* <p>Ignore 'new-repeat' node for now; just return/stop at ref to yet-to-be-created repeat node
* (similar to repeats that already exist)
*
* @param index
* @return
*/
public Vector explodeIndex(FormIndex index) {
Vector indexes = new Vector();
Vector multiplicities = new Vector();
Vector elements = new Vector();
collapseIndex(index, indexes, multiplicities, elements);
return elements;
}
/**
* 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;
}
// repIndex == -1 => next repetition about to be created
public FormIndex descendIntoRepeat(FormIndex index, int repIndex) {
int numRepetitions = getNumRepetitions(index);
Vector indexes = new Vector();
Vector multiplicities = new Vector();
Vector elements = new Vector();
collapseIndex(index, indexes, multiplicities, elements);
if (repIndex == -1) {
repIndex = numRepetitions;
} else {
if (repIndex < 0 || repIndex >= numRepetitions) {
throw new RuntimeException("selection exceeds current number of repetitions");
}
}
multiplicities.setElementAt(new Integer(repIndex), multiplicities.size() - 1);
return buildIndex(indexes, multiplicities, elements);
}
public int getNumRepetitions(FormIndex index) {
Vector indexes = new Vector();
Vector multiplicities = new Vector();
Vector elements = new Vector();
if (!index.isInForm()) {
throw new RuntimeException("not an in-form index");
}
collapseIndex(index, indexes, multiplicities, elements);
if (!(elements.lastElement() instanceof GroupDef)
|| !((GroupDef) elements.lastElement()).getRepeat()) {
throw new RuntimeException("current element not a repeat");
}
// so painful
TreeElement templNode = instance.getTemplate(index.getReference());
TreeReference parentPath = templNode.getParent().getRef().genericize();
TreeElement parentNode =
instance.resolveReference(parentPath.contextualize(index.getReference()));
return parentNode.getChildMultiplicity(templNode.getName());
}
