private function buildItemBodyWithItemContent(array $interactions, $content)
{
// Map <itemBody>
// TODO: Wrap these `content` stuff in a div
// TODO: to avoid QtiComponentIterator bug ignoring 2nd element with empty content
$contentCollection = QtiMarshallerUtil::unmarshallElement($content);
$wrapperCollection = new FlowCollection();
foreach ($contentCollection as $component) {
$wrapperCollection->attach($component);
}
$divWrapper = new Div();
$divWrapper->setContent($wrapperCollection);
// Iterate through these elements and try to replace every single question `span` with its interaction equivalent
$iterator = $divWrapper->getIterator();
foreach ($iterator as $component) {
if ($component instanceof Span && StringUtil::contains($component->getClass(), 'learnosity-response')) {
$currentContainer = $iterator->getCurrentContainer();
$questionReference = trim(str_replace('learnosity-response', '', $component->getClass()));
$questionReference = trim(str_replace('question-', '', $questionReference));
// Build the actual interaction
$interaction = $interactions[$questionReference]['interaction'];
$content = new FlowCollection();
if (isset($interactions[$questionReference]['extraContent'])) {
$content->attach($interactions[$questionReference]['extraContent']);
}
$content->attach($interaction);
$replacement = ContentCollectionBuilder::buildContent($currentContainer, $content)->current();
$currentContainer->getComponents()->replace($component, $replacement);
}
}
// Extract the actual content from the div wrapper and add that to our <itemBody>
$componentsWithinDiv = $divWrapper->getComponents();
$itemBody = new ItemBody();
$itemBody->setContent(ContentCollectionBuilder::buildBlockCollectionContent($componentsWithinDiv));
return $itemBody;
}
