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

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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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)
{
}

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