RenderObject* NodeRenderingContext::previousRenderer() const
{
ASSERT(m_node->renderer() || m_location != LocationUndetermined);
if (RenderObject* renderer = m_node->renderer())
return renderer->previousSibling();
if (m_parentFlowRenderer)
return m_parentFlowRenderer->previousRendererForNode(m_node);
if (m_phase == AttachContentForwarded) {
if (RenderObject* found = previousRendererOf(m_includer, m_node))
return found;
return NodeRenderingContext(m_includer).previousRenderer();
}
// FIXME: We should have the same O(N^2) avoidance as nextRenderer does
// however, when I tried adding it, several tests failed.
for (Node* node = m_node->previousSibling(); node; node = node->previousSibling()) {
if (node->renderer()) {
// Do not return elements that are attached to a different flow-thread.
if (node->renderer()->style() && !node->renderer()->style()->flowThread().isEmpty())
continue;
return node->renderer();
}
if (node->isContentElement()) {
if (RenderObject* last = lastRendererOf(toHTMLContentElement(node)))
return last;
}
}
if (m_phase == AttachContentFallback)
return NodeRenderingContext(m_node->parentNode()).previousRenderer();
return 0;
}
void DistributionPool::distributeTo(InsertionPoint* insertionPoint,
ElementShadowV0* elementShadow) {
DistributedNodes distributedNodes;
for (size_t i = 0; i < m_nodes.size(); ++i) {
if (m_distributed[i])
continue;
if (isHTMLContentElement(*insertionPoint) &&
!toHTMLContentElement(insertionPoint)->canSelectNode(m_nodes, i))
continue;
Node* node = m_nodes[i];
distributedNodes.append(node);
elementShadow->didDistributeNode(node, insertionPoint);
m_distributed[i] = true;
}
// Distributes fallback elements
if (insertionPoint->isContentInsertionPoint() && distributedNodes.isEmpty()) {
for (Node* fallbackNode = insertionPoint->firstChild(); fallbackNode;
fallbackNode = fallbackNode->nextSibling()) {
distributedNodes.append(fallbackNode);
elementShadow->didDistributeNode(fallbackNode, insertionPoint);
}
}
insertionPoint->setDistributedNodes(distributedNodes);
}
Element* HTMLDetailsElement::findMainSummary() const
{
if (HTMLSummaryElement* summary = Traversal<HTMLSummaryElement>::firstChild(*this))
return summary;
HTMLContentElement* content = toHTMLContentElement(closedShadowRoot()->firstChild());
ASSERT(content->firstChild() && isHTMLSummaryElement(*content->firstChild()));
return toElement(content->firstChild());
}
bool Internals::isValidContentSelect(Element* contentElement, ExceptionCode& ec)
{
if (!contentElement || !contentElement->isContentElement()) {
ec = INVALID_ACCESS_ERR;
return false;
}
return toHTMLContentElement(contentElement)->isSelectValid();
}
Element* HTMLDetailsElement::findMainSummary() const
{
for (Element* child = ElementTraversal::firstWithin(*this); child; child = ElementTraversal::nextSibling(*child)) {
if (child->hasTagName(summaryTag))
return child;
}
HTMLContentElement* content = toHTMLContentElement(userAgentShadowRoot()->firstChild());
ASSERT(content->firstChild() && content->firstChild()->hasTagName(summaryTag));
return toElement(content->firstChild());
}
NodeRenderingContext::NodeRenderingContext(Node* node)
: m_location(LocationNotInTree)
, m_phase(AttachStraight)
, m_node(node)
, m_parentNodeForRenderingAndStyle(0)
, m_visualParentShadowRoot(0)
, m_includer(0)
, m_style(0)
, m_parentFlowRenderer(0)
{
ContainerNode* parent = m_node->parentOrHostNode();
if (!parent)
return;
if (parent->isShadowRoot()) {
m_location = LocationShadowChild;
m_parentNodeForRenderingAndStyle = parent->shadowHost();
return;
}
m_location = LocationLightChild;
if (parent->isElementNode()) {
m_visualParentShadowRoot = toElement(parent)->shadowRoot();
if (m_visualParentShadowRoot) {
if ((m_includer = m_visualParentShadowRoot->includerFor(m_node))
&& m_visualParentShadowRoot->isInclusionSelectorActive()) {
m_phase = AttachContentForwarded;
m_parentNodeForRenderingAndStyle = NodeRenderingContext(m_includer).parentNodeForRenderingAndStyle();
return;
}
m_phase = AttachContentLight;
m_parentNodeForRenderingAndStyle = parent;
return;
}
if (parent->isContentElement()) {
HTMLContentElement* shadowContentElement = toHTMLContentElement(parent);
if (!shadowContentElement->hasInclusion()) {
m_phase = AttachContentFallback;
m_parentNodeForRenderingAndStyle = NodeRenderingContext(parent).parentNodeForRenderingAndStyle();
return;
}
}
}
m_parentNodeForRenderingAndStyle = parent;
}
void ElementShadow::collectSelectFeatureSetFrom(ShadowRoot& root)
{
if (!root.containsShadowRoots() && !root.containsContentElements())
return;
for (Element& element : ElementTraversal::descendantsOf(root)) {
if (ElementShadow* shadow = element.shadow())
m_selectFeatures.add(shadow->ensureSelectFeatureSet());
if (!isHTMLContentElement(element))
continue;
const CSSSelectorList& list = toHTMLContentElement(element).selectorList();
m_selectFeatures.collectFeaturesFromSelectorList(list);
}
}
void ElementShadow::collectSelectFeatureSetFrom(ShadowRoot& root)
{
if (!root.containsShadowRoots() && !root.containsContentElements())
return;
for (Element* element = ElementTraversal::firstWithin(root); element; element = ElementTraversal::next(*element, &root)) {
if (ElementShadow* shadow = element->shadow())
m_selectFeatures.add(shadow->ensureSelectFeatureSet());
if (!isHTMLContentElement(*element))
continue;
const CSSSelectorList& list = toHTMLContentElement(*element).selectorList();
for (const CSSSelector* selector = list.first(); selector; selector = CSSSelectorList::next(*selector)) {
for (const CSSSelector* component = selector; component; component = component->tagHistory())
m_selectFeatures.collectFeaturesFromSelector(*component);
}
}
}
RenderObject* NodeRenderingContext::nextRenderer() const
{
ASSERT(m_node->renderer() || m_location != LocationUndetermined);
if (RenderObject* renderer = m_node->renderer())
return renderer->nextSibling();
if (m_parentFlowRenderer)
return m_parentFlowRenderer->nextRendererForNode(m_node);
if (m_phase == AttachContentForwarded) {
if (RenderObject* found = nextRendererOf(m_includer, m_node))
return found;
return NodeRenderingContext(m_includer).nextRenderer();
}
// Avoid an O(n^2) problem with this function by not checking for
// nextRenderer() when the parent element hasn't attached yet.
if (m_node->parentOrHostNode() && !m_node->parentOrHostNode()->attached() && m_phase != AttachContentFallback)
return 0;
for (Node* node = m_node->nextSibling(); node; node = node->nextSibling()) {
if (node->renderer()) {
// Do not return elements that are attached to a different flow-thread.
if (node->renderer()->style() && !node->renderer()->style()->flowThread().isEmpty())
continue;
return node->renderer();
}
if (node->isContentElement()) {
if (RenderObject* first = firstRendererOf(toHTMLContentElement(node)))
return first;
}
}
if (m_phase == AttachContentFallback)
return NodeRenderingContext(m_node->parentNode()).nextRenderer();
return 0;
}