bool HTMLShadowElement::doesSelectFromHostChildren() const
{
TreeScope* scope = treeScope();
if (scope->isShadowRoot())
return toShadowRoot(scope)->isOldest();
return false;
}
ShadowRoot* InsertionPoint::assignedFrom() const
{
TreeScope* scope = treeScope();
if (!scope->isShadowRoot())
return 0;
ShadowRoot* olderShadowRoot = toShadowRoot(scope)->olderShadowRoot();
if (olderShadowRoot && olderShadowRoot->assignedTo() == this)
return olderShadowRoot;
return 0;
}
void InsertionPoint::attach()
{
TreeScope* scope = treeScope();
if (scope->isShadowRoot()) {
ShadowRoot* root = toShadowRoot(scope);
if (doesSelectFromHostChildren()) {
distributeHostChildren(root->tree());
attachDistributedNode();
} else if (!root->olderShadowRoot()->assignedTo()) {
ASSERT(!root->olderShadowRoot()->attached());
assignShadowRoot(root->olderShadowRoot());
root->olderShadowRoot()->attach();
}
}
HTMLElement::attach();
}