static ContainerNode* traverseParent(const Node* node, ShadowRootCrossing shadowRootCrossing)
{
if (node->isPseudoElement())
return toPseudoElement(node)->hostElement();
if (shadowRootCrossing == DontCrossShadowRoot && node->isShadowRoot())
return 0;
if (nodeCanBeDistributed(node)) {
if (InsertionPoint* insertionPoint = findInsertionPointOf(node))
return traverseParent(insertionPoint, shadowRootCrossing);
return nullptr;
}
ContainerNode* parent = node->parentNode();
if (!parent)
return nullptr;
if (parent->isShadowRoot())
return shadowRootCrossing == CrossShadowRoot ? toShadowRoot(parent)->hostElement() : parent;
if (parent->isInsertionPoint()) {
const InsertionPoint* insertionPoint = toInsertionPoint(parent);
if (insertionPoint->hasDistribution())
return nullptr;
if (insertionPoint->isActive())
return traverseParent(parent, shadowRootCrossing);
}
return parent;
}
inline EventTarget& eventTargetRespectingTargetRules(Node& referenceNode)
{
if (referenceNode.isPseudoElement()) {
EventTarget* hostElement = toPseudoElement(referenceNode).hostElement();
ASSERT(hostElement);
return *hostElement;
}
#if ENABLE(SVG)
if (!referenceNode.isSVGElement() || !referenceNode.isInShadowTree())
return referenceNode;
// Spec: The event handling for the non-exposed tree works as if the referenced element had been textually included
// as a deeply cloned child of the 'use' element, except that events are dispatched to the SVGElementInstance objects
Node* rootNode = referenceNode.treeScope().rootNode();
Element* shadowHostElement = rootNode->isShadowRoot() ? toShadowRoot(rootNode)->hostElement() : 0;
// At this time, SVG nodes are not supported in non-<use> shadow trees.
if (!shadowHostElement || !shadowHostElement->hasTagName(SVGNames::useTag))
return referenceNode;
SVGUseElement* useElement = toSVGUseElement(shadowHostElement);
if (SVGElementInstance* instance = useElement->instanceForShadowTreeElement(&referenceNode))
return *instance;
#endif
return referenceNode;
}
PassRefPtr<TypeBuilder::LayerTree::Layer> InspectorLayerTreeAgent::buildObjectForLayer(ErrorString* errorString, RenderLayer* renderLayer)
{
RenderObject* renderer = &renderLayer->renderer();
RenderLayerBacking* backing = renderLayer->backing();
Node* node = renderer->node();
bool isReflection = renderLayer->isReflection();
bool isGenerated = (isReflection ? renderer->parent() : renderer)->isBeforeOrAfterContent();
bool isAnonymous = renderer->isAnonymous();
if (renderer->isRenderView())
node = &renderer->document();
else if (isReflection && isGenerated)
node = renderer->parent()->generatingElement();
else if (isGenerated)
node = renderer->generatingNode();
else if (isReflection || isAnonymous)
node = renderer->parent()->element();
// Basic set of properties.
RefPtr<TypeBuilder::LayerTree::Layer> layerObject = TypeBuilder::LayerTree::Layer::create()
.setLayerId(bind(renderLayer))
.setNodeId(idForNode(errorString, node))
.setBounds(buildObjectForIntRect(renderer->absoluteBoundingBoxRect()))
.setMemory(backing->backingStoreMemoryEstimate())
.setCompositedBounds(buildObjectForIntRect(enclosingIntRect(backing->compositedBounds())))
.setPaintCount(backing->graphicsLayer()->repaintCount());
if (node && node->shadowHost())
layerObject->setIsInShadowTree(true);
if (isReflection)
layerObject->setIsReflection(true);
if (isGenerated) {
if (isReflection)
renderer = renderer->parent();
layerObject->setIsGeneratedContent(true);
layerObject->setPseudoElementId(bindPseudoElement(toPseudoElement(renderer->node())));
if (renderer->isBeforeContent())
layerObject->setPseudoElement("before");
else if (renderer->isAfterContent())
layerObject->setPseudoElement("after");
}
// FIXME: RenderView is now really anonymous but don't tell about it to the frontend before making sure it can handle it.
if (isAnonymous && !renderer->isRenderView()) {
layerObject->setIsAnonymous(true);
if (RenderStyle* style = renderer->style()) {
if (style->styleType() == FIRST_LETTER)
layerObject->setPseudoElement("first-letter");
else if (style->styleType() == FIRST_LINE)
layerObject->setPseudoElement("first-line");
}
}
return layerObject;
}
ContainerNode* parent(const Node& node, ParentDetails* details) {
// TODO(hayato): Uncomment this once we can be sure
// LayoutTreeBuilderTraversal::parent() is used only for a node which is
// connected.
// DCHECK(node.isConnected());
if (node.isPseudoElement()) {
assertPseudoElementParent(toPseudoElement(node));
return node.parentNode();
}
return FlatTreeTraversal::parent(node, details);
}
Node* previousSibling(const Node& node) {
if (node.isAfterPseudoElement()) {
assertPseudoElementParent(toPseudoElement(node));
if (Node* previous = FlatTreeTraversal::lastChild(*node.parentNode()))
return previous;
} else {
if (node.isBeforePseudoElement())
return nullptr;
if (Node* previous = FlatTreeTraversal::previousSibling(node))
return previous;
}
Node* parent = FlatTreeTraversal::parent(node);
if (parent && parent->isElementNode())
return toElement(parent)->pseudoElement(PseudoIdBefore);
return nullptr;
}
// FIXME: Use an iterative algorithm so that it can be inlined.
// https://bugs.webkit.org/show_bug.cgi?id=90415
Node* ComposedShadowTreeWalker::traverseParent(const Node* node, ParentTraversalDetails* details) const
{
if (node->isPseudoElement())
return toPseudoElement(node)->hostElement();
if (!canCrossUpperBoundary() && node->isShadowRoot())
return 0;
if (nodeCanBeDistributed(node)) {
if (InsertionPoint* insertionPoint = resolveReprojection(node)) {
if (details)
details->didTraverseInsertionPoint(insertionPoint);
return traverseParent(insertionPoint, details);
}
// The node is a non-distributed light child or older shadow's child.
if (details)
details->childWasOutOfComposition();
}
return traverseParentInCurrentTree(node, details);
}
static Node* nodeOrHostIfPseudoElement(Node* node)
{
return node->isPseudoElement() ? toPseudoElement(node)->hostElement() : node;
}
static inline Element* parentOrPseudoHostElement(const RenderObject* object)
{
if (object->node()->isPseudoElement())
return toPseudoElement(object->node())->hostElement();
return toElement(object->node())->parentElement();
}