void ContentDistributor::distribute(Element* host)
{
ASSERT(needsDistribution());
ASSERT(m_nodeToInsertionPoint.isEmpty());
m_validity = Valid;
ContentDistribution pool;
for (Node* node = host->firstChild(); node; node = node->nextSibling())
populate(node, pool);
Vector<bool> distributed(pool.size());
distributed.fill(false);
Vector<HTMLShadowElement*, 8> activeShadowInsertionPoints;
for (ShadowRoot* root = host->youngestShadowRoot(); root; root = root->olderShadowRoot()) {
HTMLShadowElement* firstActiveShadowInsertionPoint = 0;
const Vector<InsertionPoint*>& insertionPoints = root->insertionPointList();
for (size_t i = 0; i < insertionPoints.size(); ++i) {
InsertionPoint* point = insertionPoints[i];
if (!point->isActive())
continue;
if (isHTMLShadowElement(point)) {
if (!firstActiveShadowInsertionPoint)
firstActiveShadowInsertionPoint = toHTMLShadowElement(point);
} else {
distributeSelectionsTo(point, pool, distributed);
if (ElementShadow* shadow = point->parentNode()->isElementNode() ? toElement(point->parentNode())->shadow() : 0)
shadow->invalidateDistribution();
}
}
if (firstActiveShadowInsertionPoint)
activeShadowInsertionPoints.append(firstActiveShadowInsertionPoint);
}
for (size_t i = activeShadowInsertionPoints.size(); i > 0; --i) {
HTMLShadowElement* shadowElement = activeShadowInsertionPoints[i - 1];
ShadowRoot* root = shadowElement->shadowRoot();
ASSERT(root);
if (root->olderShadowRoot()) {
distributeNodeChildrenTo(shadowElement, root->olderShadowRoot());
root->olderShadowRoot()->setAssignedTo(shadowElement);
} else {
distributeSelectionsTo(shadowElement, pool, distributed);
if (ElementShadow* shadow = shadowElement->parentNode()->isElementNode() ? toElement(shadowElement->parentNode())->shadow() : 0)
shadow->invalidateDistribution();
}
}
}
void ElementShadow::distribute()
{
host()->setNeedsStyleRecalc();
const ContainerNode* poolContainer = host();
Vector<HTMLShadowElement*, 32> shadowInsertionPoints;
for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot()) {
DistributionPool pool(poolContainer);
HTMLShadowElement* shadowInsertionPoint = 0;
const Vector<RefPtr<InsertionPoint> >& insertionPoints = root->descendantInsertionPoints();
for (size_t i = 0; i < insertionPoints.size(); ++i) {
InsertionPoint* point = insertionPoints[i].get();
if (!point->isActive())
continue;
if (isHTMLShadowElement(point)) {
if (!shadowInsertionPoint)
shadowInsertionPoint = toHTMLShadowElement(point);
} else {
pool.distributeTo(point, this);
if (ElementShadow* shadow = shadowWhereNodeCanBeDistributed(*point))
shadow->setNeedsDistributionRecalc();
}
}
if (shadowInsertionPoint)
shadowInsertionPoints.append(shadowInsertionPoint);
poolContainer = shadowInsertionPoint;
}
for (size_t i = shadowInsertionPoints.size(); i > 0; --i) {
HTMLShadowElement* shadowInsertionPoint = shadowInsertionPoints[i - 1];
ShadowRoot* root = shadowInsertionPoint->containingShadowRoot();
ASSERT(root);
if (root->olderShadowRoot() && root->olderShadowRoot()->type() == root->type()) {
// Only allow reprojecting older shadow roots between the same type to
// disallow reprojecting UA elements into author shadows.
distributeNodeChildrenTo(shadowInsertionPoint, root->olderShadowRoot());
root->olderShadowRoot()->setShadowInsertionPointOfYoungerShadowRoot(shadowInsertionPoint);
} else if (root->isOldest()) {
DistributionPool pool(shadowInsertionPoint);
pool.distributeTo(shadowInsertionPoint, this);
}
if (ElementShadow* shadow = shadowWhereNodeCanBeDistributed(*shadowInsertionPoint))
shadow->setNeedsDistributionRecalc();
}
}
