third_party/WebKit/Source/core/html/HTMLTemplateElement.cpp

/*
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#include "core/html/HTMLTemplateElement.h"

#include "core/dom/Document.h"
#include "core/dom/DocumentFragment.h"
#include "core/dom/TemplateContentDocumentFragment.h"

namespace blink {

using namespace HTMLNames;

inline HTMLTemplateElement::HTMLTemplateElement(Document& document)
    : HTMLElement(templateTag, document), m_content(this, nullptr) {}

DEFINE_NODE_FACTORY(HTMLTemplateElement)

HTMLTemplateElement::~HTMLTemplateElement() {}

DocumentFragment* HTMLTemplateElement::content() const {
  if (!m_content)
    m_content = TemplateContentDocumentFragment::create(
        document().ensureTemplateDocument(),
        const_cast<HTMLTemplateElement*>(this));

  return m_content.get();
}

Node* HTMLTemplateElement::cloneNode(bool deep) {
  if (!deep)
    return cloneElementWithoutChildren();

  Node* clone = cloneElementWithChildren();
  if (m_content)
    content()->cloneChildNodes(toHTMLTemplateElement(clone)->content());
  return clone;
}

void HTMLTemplateElement::didMoveToNewDocument(Document& oldDocument) {
  HTMLElement::didMoveToNewDocument(oldDocument);
  if (!m_content)
    return;
  document().ensureTemplateDocument().adoptIfNeeded(*m_content);
}

DEFINE_TRACE(HTMLTemplateElement) {
  visitor->trace(m_content);
  HTMLElement::trace(visitor);
}

DEFINE_TRACE_WRAPPERS(HTMLTemplateElement) {
  visitor->traceWrappers(m_content);
  HTMLElement::traceWrappers(visitor);
}

}  // namespace blink