void HTMLStyleElement::registerWithScopingNode(bool scoped)
{
// Note: We cannot rely on the 'scoped' element already being present when this method is invoked.
// Therefore we cannot rely on scoped()!
ASSERT(m_scopedStyleRegistrationState == NotRegistered);
ASSERT(inDocument());
if (m_scopedStyleRegistrationState != NotRegistered)
return;
ContainerNode* scope = scoped ? parentNode() : containingShadowRoot();
if (!scope)
return;
if (!scope->isElementNode() && !scope->isShadowRoot()) {
// DocumentFragment nodes should never be inDocument,
// <style> should not be a child of Document, PI or some such.
ASSERT_NOT_REACHED();
return;
}
scope->registerScopedHTMLStyleChild();
if (scope->isShadowRoot())
scope->shadowHost()->setNeedsStyleRecalc();
else
scope->setNeedsStyleRecalc();
if (inDocument() && !document()->parsing() && document()->renderer())
document()->styleResolverChanged(DeferRecalcStyle);
m_scopedStyleRegistrationState = scoped ? RegisteredAsScoped : RegisteredInShadowRoot;
}
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 VisibleSelection::adjustSelectionToAvoidCrossingEditingBoundaries()
{
if (m_base.isNull() || m_start.isNull() || m_end.isNull())
return;
ContainerNode* baseRoot = highestEditableRoot(m_base);
ContainerNode* startRoot = highestEditableRoot(m_start);
ContainerNode* endRoot = highestEditableRoot(m_end);
Element* baseEditableAncestor = lowestEditableAncestor(m_base.containerNode());
// The base, start and end are all in the same region. No adjustment necessary.
if (baseRoot == startRoot && baseRoot == endRoot)
return;
// The selection is based in editable content.
if (baseRoot) {
// If the start is outside the base's editable root, cap it at the start of that root.
// If the start is in non-editable content that is inside the base's editable root, put it
// at the first editable position after start inside the base's editable root.
if (startRoot != baseRoot) {
VisiblePosition first = firstEditableVisiblePositionAfterPositionInRoot(m_start, baseRoot);
m_start = first.deepEquivalent();
if (m_start.isNull()) {
ASSERT_NOT_REACHED();
m_start = m_end;
}
}
// If the end is outside the base's editable root, cap it at the end of that root.
// If the end is in non-editable content that is inside the base's root, put it
// at the last editable position before the end inside the base's root.
if (endRoot != baseRoot) {
VisiblePosition last = lastEditableVisiblePositionBeforePositionInRoot(m_end, baseRoot);
m_end = last.deepEquivalent();
if (m_end.isNull())
m_end = m_start;
}
// The selection is based in non-editable content.
} else {
// FIXME: Non-editable pieces inside editable content should be atomic, in the same way that editable
// pieces in non-editable content are atomic.
// The selection ends in editable content or non-editable content inside a different editable ancestor,
// move backward until non-editable content inside the same lowest editable ancestor is reached.
Element* endEditableAncestor = lowestEditableAncestor(m_end.containerNode());
if (endRoot || endEditableAncestor != baseEditableAncestor) {
Position p = previousVisuallyDistinctCandidate(m_end);
Element* shadowAncestor = endRoot ? endRoot->shadowHost() : 0;
if (p.isNull() && shadowAncestor)
p = positionAfterNode(shadowAncestor);
while (p.isNotNull() && !(lowestEditableAncestor(p.containerNode()) == baseEditableAncestor && !isEditablePosition(p))) {
Element* root = editableRootForPosition(p);
shadowAncestor = root ? root->shadowHost() : 0;
p = isAtomicNode(p.containerNode()) ? positionInParentBeforeNode(*p.containerNode()) : previousVisuallyDistinctCandidate(p);
if (p.isNull() && shadowAncestor)
p = positionAfterNode(shadowAncestor);
}
VisiblePosition previous(p);
if (previous.isNull()) {
// The selection crosses an Editing boundary. This is a
// programmer error in the editing code. Happy debugging!
ASSERT_NOT_REACHED();
m_base = Position();
m_extent = Position();
validate();
return;
}
m_end = previous.deepEquivalent();
}
// The selection starts in editable content or non-editable content inside a different editable ancestor,
// move forward until non-editable content inside the same lowest editable ancestor is reached.
Element* startEditableAncestor = lowestEditableAncestor(m_start.containerNode());
if (startRoot || startEditableAncestor != baseEditableAncestor) {
Position p = nextVisuallyDistinctCandidate(m_start);
Element* shadowAncestor = startRoot ? startRoot->shadowHost() : 0;
if (p.isNull() && shadowAncestor)
p = positionBeforeNode(shadowAncestor);
while (p.isNotNull() && !(lowestEditableAncestor(p.containerNode()) == baseEditableAncestor && !isEditablePosition(p))) {
Element* root = editableRootForPosition(p);
shadowAncestor = root ? root->shadowHost() : 0;
p = isAtomicNode(p.containerNode()) ? positionInParentAfterNode(*p.containerNode()) : nextVisuallyDistinctCandidate(p);
if (p.isNull() && shadowAncestor)
p = positionBeforeNode(shadowAncestor);
}
VisiblePosition next(p);
if (next.isNull()) {
// The selection crosses an Editing boundary. This is a
// programmer error in the editing code. Happy debugging!
ASSERT_NOT_REACHED();
m_base = Position();
m_extent = Position();
validate();
return;
}
m_start = next.deepEquivalent();
}
}
// Correct the extent if necessary.
if (baseEditableAncestor != lowestEditableAncestor(m_extent.containerNode()))
m_extent = m_baseIsFirst ? m_end : m_start;
}
