Ref<NodeList> WebKitNamedFlow::getRegionsByContent(Node* contentNode)
{
if (!contentNode)
return StaticElementList::createEmpty();
if (m_flowManager->document())
m_flowManager->document()->updateLayoutIgnorePendingStylesheets();
// The renderer may be destroyed or created after the style update.
// Because this is called from JS, where the wrapper keeps a reference to the NamedFlow, no guard is necessary.
if (!m_parentFlowThread)
return StaticElementList::createEmpty();
Vector<Ref<Element>> regionElements;
if (inFlowThread(contentNode->renderer(), m_parentFlowThread)) {
const RenderRegionList& regionList = m_parentFlowThread->renderRegionList();
for (const auto& renderRegion : regionList) {
const auto& namedFlowFragment = downcast<RenderNamedFlowFragment>(*renderRegion);
// FIXME: Pseudo-elements are not included in the list.
// They will be included when we will properly support the Region interface
// http://dev.w3.org/csswg/css-regions/#the-region-interface
if (namedFlowFragment.isPseudoElementRegion())
continue;
if (m_parentFlowThread->objectInFlowRegion(contentNode->renderer(), &namedFlowFragment)) {
ASSERT(namedFlowFragment.generatingElement());
regionElements.append(*namedFlowFragment.generatingElement());
}
}
}
return StaticElementList::adopt(regionElements);
}
PassRefPtr<NodeList> WebKitNamedFlow::getRegionsByContent(Node* contentNode)
{
Vector<RefPtr<Node> > regionNodes;
if (!contentNode)
return StaticNodeList::adopt(regionNodes);
if (m_flowManager->document())
m_flowManager->document()->updateLayoutIgnorePendingStylesheets();
// The renderer may be destroyed or created after the style update.
// Because this is called from JS, where the wrapper keeps a reference to the NamedFlow, no guard is necessary.
if (!m_parentFlowThread)
return StaticNodeList::adopt(regionNodes);
if (inFlowThread(contentNode->renderer(), m_parentFlowThread)) {
const RenderRegionList& regionList = m_parentFlowThread->renderRegionList();
for (RenderRegionList::const_iterator iter = regionList.begin(); iter != regionList.end(); ++iter) {
const RenderRegion* renderRegion = *iter;
// FIXME: Pseudo-elements are not included in the list.
if (!renderRegion->node())
continue;
if (m_parentFlowThread->objectInFlowRegion(contentNode->renderer(), renderRegion))
regionNodes.append(renderRegion->node());
}
}
return StaticNodeList::adopt(regionNodes);
}
static inline bool inFlowThread(RenderObject* renderer, RenderNamedFlowThread* flowThread)
{
if (!renderer)
return false;
RenderFlowThread* currentFlowThread = renderer->flowThreadContainingBlock();
if (flowThread == currentFlowThread)
return true;
if (renderer->flowThreadState() != RenderObject::InsideInFlowThread)
return false;
// An in-flow flow thread can be nested inside an out-of-flow one, so we have to recur up to check.
return inFlowThread(currentFlowThread->containingBlock(), flowThread);
}
