void Element::cloneAttributesFromElement(const Element& other)
{
other.synchronizeAllAttributes();
if (!other.m_elementData) {
m_elementData.clear();
return;
}
const AtomicString& oldID = getIdAttribute();
const AtomicString& newID = other.getIdAttribute();
if (!oldID.isNull() || !newID.isNull())
updateId(oldID, newID);
// If 'other' has a mutable ElementData, convert it to an immutable one so we can share it between both elements.
// We can only do this if there are no presentation attributes and sharing the data won't result in different case sensitivity of class or id.
if (other.m_elementData->isUnique())
const_cast<Element&>(other).m_elementData = toUniqueElementData(other.m_elementData)->makeShareableCopy();
if (!other.m_elementData->isUnique())
m_elementData = other.m_elementData;
else
m_elementData = other.m_elementData->makeUniqueCopy();
AttributeCollection attributes = m_elementData->attributes();
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it)
attributeChangedFromParserOrByCloning(it->name(), it->value(), ModifiedByCloning);
}
void StyledMarkupAccumulator::appendElement(StringBuilder& out, Element& element, bool addDisplayInline)
{
const bool documentIsHTML = element.document().isHTMLDocument();
appendOpenTag(out, element, 0);
const bool shouldAnnotateOrForceInline = element.isHTMLElement() && (shouldAnnotate() || addDisplayInline);
const bool shouldOverrideStyleAttr = shouldAnnotateOrForceInline || shouldApplyWrappingStyle(element);
AttributeCollection attributes = element.attributes();
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
// We'll handle the style attribute separately, below.
if (it->name() == HTMLNames::styleAttr && shouldOverrideStyleAttr)
continue;
appendAttribute(out, element, *it, 0);
}
if (shouldOverrideStyleAttr) {
RefPtr<EditingStyle> newInlineStyle = nullptr;
if (shouldApplyWrappingStyle(element)) {
newInlineStyle = m_wrappingStyle->copy();
newInlineStyle->removePropertiesInElementDefaultStyle(&element);
newInlineStyle->removeStyleConflictingWithStyleOfElement(&element);
} else
newInlineStyle = EditingStyle::create();
if (element.isStyledElement() && element.inlineStyle())
newInlineStyle->overrideWithStyle(element.inlineStyle());
if (shouldAnnotateOrForceInline) {
if (shouldAnnotate())
newInlineStyle->mergeStyleFromRulesForSerialization(&toHTMLElement(element));
if (&element == m_highestNodeToBeSerialized && m_shouldAnnotate == AnnotateForNavigationTransition)
newInlineStyle->addAbsolutePositioningFromElement(element);
if (addDisplayInline)
newInlineStyle->forceInline();
}
if (!newInlineStyle->isEmpty()) {
out.appendLiteral(" style=\"");
appendAttributeValue(out, newInlineStyle->style()->asText(), documentIsHTML);
out.append('\"');
}
}
appendCloseTag(out, element);
}
bool ElementData::isEquivalent(const ElementData* other) const
{
AttributeCollection attributes = this->attributes();
if (!other)
return attributes.isEmpty();
AttributeCollection otherAttributes = other->attributes();
if (attributes.size() != otherAttributes.size())
return false;
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
const Attribute* otherAttr = otherAttributes.find(it->name());
if (!otherAttr || it->value() != otherAttr->value())
return false;
}
return true;
}
// TODO(yosin): We should utilize |MarkupFormatter| here to share code,
// especially escaping attribute values, done by |WebEntities| |m_htmlEntities|
// and |m_xmlEntities|.
void WebPageSerializerImpl::openTagToString(Element* element,
SerializeDomParam* param)
{
bool needSkip;
StringBuilder result;
// Do pre action for open tag.
result.append(preActionBeforeSerializeOpenTag(element, param, &needSkip));
if (needSkip)
return;
// Add open tag
result.append('<');
result.append(element->nodeName().lower());
// Go through all attributes and serialize them.
AttributeCollection attributes = element->attributes();
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
result.append(' ');
// Add attribute pair
result.append(it->name().toString());
result.appendLiteral("=\"");
if (!it->value().isEmpty()) {
const String& attrValue = it->value();
// Check whether we need to replace some resource links
// with local resource paths.
const QualifiedName& attrName = it->name();
if (element->hasLegalLinkAttribute(attrName)) {
// For links start with "javascript:", we do not change it.
if (attrValue.startsWith("javascript:", TextCaseInsensitive)) {
result.append(m_htmlEntities.convertEntitiesInString(attrValue));
} else {
// Get the absolute link
WebLocalFrameImpl* subFrame = WebLocalFrameImpl::fromFrameOwnerElement(element);
String completeURL = subFrame ? subFrame->frame()->document()->url() :
param->document->completeURL(attrValue);
// Check whether we have local files for those link.
if (m_localLinks.contains(completeURL)) {
if (!param->directoryName.isEmpty()) {
result.appendLiteral("./");
result.append(param->directoryName);
result.append('/');
}
result.append(m_htmlEntities.convertEntitiesInString(m_localLinks.get(completeURL)));
} else {
result.append(m_htmlEntities.convertEntitiesInString(completeURL));
}
}
} else {
if (param->isHTMLDocument)
result.append(m_htmlEntities.convertEntitiesInString(attrValue));
else
result.append(m_xmlEntities.convertEntitiesInString(attrValue));
}
}
result.append('\"');
}
// Do post action for open tag.
String addedContents = postActionAfterSerializeOpenTag(element, param);
// Complete the open tag for element when it has child/children.
if (element->hasChildren() || param->haveAddedContentsBeforeEnd)
result.append('>');
// Append the added contents generate in post action of open tag.
result.append(addedContents);
// Save the result to data buffer.
saveHTMLContentToBuffer(result.toString(), param);
}
// Result nodes are ordered in axis order. Node test (including merged
// predicates) is applied.
void Step::nodesInAxis(EvaluationContext& evaluationContext, Node* context, NodeSet& nodes) const
{
ASSERT(nodes.isEmpty());
switch (m_axis) {
case ChildAxis:
// In XPath model, attribute nodes do not have children.
if (context->isAttributeNode())
return;
for (Node* n = context->firstChild(); n; n = n->nextSibling()) {
if (nodeMatches(evaluationContext, n, ChildAxis, nodeTest()))
nodes.append(n);
}
return;
case DescendantAxis:
// In XPath model, attribute nodes do not have children.
if (context->isAttributeNode())
return;
for (Node* n = context->firstChild(); n; n = NodeTraversal::next(*n, context)) {
if (nodeMatches(evaluationContext, n, DescendantAxis, nodeTest()))
nodes.append(n);
}
return;
case ParentAxis:
if (context->isAttributeNode()) {
Element* n = toAttr(context)->ownerElement();
if (nodeMatches(evaluationContext, n, ParentAxis, nodeTest()))
nodes.append(n);
} else {
ContainerNode* n = context->parentNode();
if (n && nodeMatches(evaluationContext, n, ParentAxis, nodeTest()))
nodes.append(n);
}
return;
case AncestorAxis: {
Node* n = context;
if (context->isAttributeNode()) {
n = toAttr(context)->ownerElement();
if (nodeMatches(evaluationContext, n, AncestorAxis, nodeTest()))
nodes.append(n);
}
for (n = n->parentNode(); n; n = n->parentNode()) {
if (nodeMatches(evaluationContext, n, AncestorAxis, nodeTest()))
nodes.append(n);
}
nodes.markSorted(false);
return;
}
case FollowingSiblingAxis:
if (context->nodeType() == Node::ATTRIBUTE_NODE)
return;
for (Node* n = context->nextSibling(); n; n = n->nextSibling()) {
if (nodeMatches(evaluationContext, n, FollowingSiblingAxis, nodeTest()))
nodes.append(n);
}
return;
case PrecedingSiblingAxis:
if (context->nodeType() == Node::ATTRIBUTE_NODE)
return;
for (Node* n = context->previousSibling(); n; n = n->previousSibling()) {
if (nodeMatches(evaluationContext, n, PrecedingSiblingAxis, nodeTest()))
nodes.append(n);
}
nodes.markSorted(false);
return;
case FollowingAxis:
if (context->isAttributeNode()) {
for (Node* p = NodeTraversal::next(*toAttr(context)->ownerElement()); p; p = NodeTraversal::next(*p)) {
if (nodeMatches(evaluationContext, p, FollowingAxis, nodeTest()))
nodes.append(p);
}
} else {
for (Node* p = context; !isRootDomNode(p); p = p->parentNode()) {
for (Node* n = p->nextSibling(); n; n = n->nextSibling()) {
if (nodeMatches(evaluationContext, n, FollowingAxis, nodeTest()))
nodes.append(n);
for (Node* c = n->firstChild(); c; c = NodeTraversal::next(*c, n)) {
if (nodeMatches(evaluationContext, c, FollowingAxis, nodeTest()))
nodes.append(c);
}
}
}
}
return;
case PrecedingAxis: {
if (context->isAttributeNode())
context = toAttr(context)->ownerElement();
Node* n = context;
while (ContainerNode* parent = n->parentNode()) {
for (n = NodeTraversal::previous(*n); n != parent; n = NodeTraversal::previous(*n)) {
if (nodeMatches(evaluationContext, n, PrecedingAxis, nodeTest()))
nodes.append(n);
}
n = parent;
}
nodes.markSorted(false);
return;
}
case AttributeAxis: {
if (!context->isElementNode())
return;
Element* contextElement = toElement(context);
// Avoid lazily creating attribute nodes for attributes that we do not
// need anyway.
if (nodeTest().kind() == NodeTest::NameTest && nodeTest().data() != starAtom) {
RefPtrWillBeRawPtr<Node> n = contextElement->getAttributeNodeNS(nodeTest().namespaceURI(), nodeTest().data());
// In XPath land, namespace nodes are not accessible on the attribute axis.
if (n && n->namespaceURI() != XMLNSNames::xmlnsNamespaceURI) {
// Still need to check merged predicates.
if (nodeMatches(evaluationContext, n.get(), AttributeAxis, nodeTest()))
nodes.append(n.release());
}
return;
}
AttributeCollection attributes = contextElement->attributes();
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
RefPtrWillBeRawPtr<Attr> attr = contextElement->ensureAttr(it->name());
if (nodeMatches(evaluationContext, attr.get(), AttributeAxis, nodeTest()))
nodes.append(attr.release());
}
return;
}
case NamespaceAxis:
// XPath namespace nodes are not implemented.
return;
case SelfAxis:
if (nodeMatches(evaluationContext, context, SelfAxis, nodeTest()))
nodes.append(context);
return;
case DescendantOrSelfAxis:
if (nodeMatches(evaluationContext, context, DescendantOrSelfAxis, nodeTest()))
nodes.append(context);
// In XPath model, attribute nodes do not have children.
if (context->isAttributeNode())
return;
for (Node* n = context->firstChild(); n; n = NodeTraversal::next(*n, context)) {
if (nodeMatches(evaluationContext, n, DescendantOrSelfAxis, nodeTest()))
nodes.append(n);
}
return;
case AncestorOrSelfAxis: {
if (nodeMatches(evaluationContext, context, AncestorOrSelfAxis, nodeTest()))
nodes.append(context);
Node* n = context;
if (context->isAttributeNode()) {
n = toAttr(context)->ownerElement();
if (nodeMatches(evaluationContext, n, AncestorOrSelfAxis, nodeTest()))
nodes.append(n);
}
for (n = n->parentNode(); n; n = n->parentNode()) {
if (nodeMatches(evaluationContext, n, AncestorOrSelfAxis, nodeTest()))
nodes.append(n);
}
nodes.markSorted(false);
return;
}
}
ASSERT_NOT_REACHED();
}
