Source/WebCore/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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#include "config.h"

#if ENABLE(TEMPLATE_ELEMENT)

#include "HTMLTemplateElement.h"

#include "DOMImplementation.h"
#include "DocumentFragment.h"
#include "HTMLDocument.h"
#include "markup.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLTemplateElement::HTMLTemplateElement(const QualifiedName& tagName, Document* document)
    : HTMLElement(tagName, document)
{
}

HTMLTemplateElement::~HTMLTemplateElement()
{
}

PassRefPtr<HTMLTemplateElement> HTMLTemplateElement::create(const QualifiedName& tagName, Document* document)
{
    return adoptRef(new HTMLTemplateElement(tagName, document));
}

DocumentFragment* HTMLTemplateElement::content() const
{
    if (!m_content)
        m_content = DocumentFragment::create(ownerDocument()->templateContentsOwnerDocument());

    return m_content.get();
}

// FIXME: https://www.w3.org/Bugs/Public/show_bug.cgi?id=20127 (prevent DOM hierarchy cycles).
// FIXME: https://www.w3.org/Bugs/Public/show_bug.cgi?id=20129 (extended adoptNode to consider template.content).
void HTMLTemplateElement::setContent(PassRefPtr<DocumentFragment> prpContent, ExceptionCode& ec)
{
    RefPtr<DocumentFragment> content = prpContent;

    if (!content || content->isShadowRoot()) {
        ec = TYPE_MISMATCH_ERR;
        return;
    }

    if (m_content.get() == content.get())
        return;

    if (content->ownerDocument() != ownerDocument()->templateContentsOwnerDocument())
        ownerDocument()->templateContentsOwnerDocument()->adoptNode(content, ASSERT_NO_EXCEPTION);

    m_content = content;
}

#ifndef NDEBUG
const HTMLTemplateElement* toHTMLTemplateElement(const Node* node)
{
    ASSERT(!node || (node->isHTMLElement() && node->hasTagName(templateTag)));
    return static_cast<const HTMLTemplateElement*>(node);
}
#endif

} // namespace WebCore

#endif // ENABLE(TEMPLATE_ELEMENT)