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/*
* Copyright (C) 2012, 2013 Google Inc. All rights reserved.
* Copyright (C) 2013-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
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* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HTMLTemplateElement.h"
#include "Document.h"
#include "DocumentFragment.h"
#include "ElementInlines.h"
#include "ElementRareData.h"
#include "HTMLNames.h"
#include "NodeInlines.h"
#include "NodeTraversal.h"
#include "SerializedNode.h"
#include "ShadowRoot.h"
#include "ShadowRootInit.h"
#include "SlotAssignmentMode.h"
#include "TemplateContentDocumentFragment.h"
#include "markup.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(HTMLTemplateElement);
using namespace HTMLNames;
inline HTMLTemplateElement::HTMLTemplateElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document, TypeFlag::HasDidMoveToNewDocument)
{
}
HTMLTemplateElement::~HTMLTemplateElement()
{
if (m_content)
m_content->clearHost();
}
Ref<HTMLTemplateElement> HTMLTemplateElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLTemplateElement(tagName, document));
}
DocumentFragment* HTMLTemplateElement::contentIfAvailable() const
{
return m_content.get();
}
DocumentFragment& HTMLTemplateElement::fragmentForInsertion() const
{
if (m_declarativeShadowRoot)
return *m_declarativeShadowRoot;
return content();
}
DocumentFragment& HTMLTemplateElement::content() const
{
ASSERT(!m_declarativeShadowRoot);
if (!m_content)
lazyInitialize(m_content, TemplateContentDocumentFragment::create(protectedDocument()->ensureProtectedTemplateDocument(), *this));
return *m_content;
}
void HTMLTemplateElement::adoptDeserializedContent(Ref<TemplateContentDocumentFragment>&& content)
{
lazyInitialize(m_content, WTF::move(content));
}
const AtomString& HTMLTemplateElement::shadowRootMode() const
{
static MainThreadNeverDestroyed<const AtomString> open("open"_s);
static MainThreadNeverDestroyed<const AtomString> closed("closed"_s);
auto modeString = attributeWithoutSynchronization(HTMLNames::shadowrootmodeAttr);
if (equalLettersIgnoringASCIICase(modeString, "closed"_s))
return closed;
if (equalLettersIgnoringASCIICase(modeString, "open"_s))
return open;
return emptyAtom();
}
void HTMLTemplateElement::setDeclarativeShadowRoot(ShadowRoot& shadowRoot)
{
m_declarativeShadowRoot = shadowRoot;
}
Ref<Node> HTMLTemplateElement::cloneNodeInternal(Document& document, CloningOperation type, CustomElementRegistry* registry) const
{
RefPtr<Node> clone;
switch (type) {
case CloningOperation::SelfOnly:
return cloneElementWithoutChildren(document, registry);
case CloningOperation::SelfWithTemplateContent:
clone = cloneElementWithoutChildren(document, registry);
break;
case CloningOperation::Everything:
clone = cloneElementWithChildren(document, registry);
break;
}
if (m_content) {
auto& templateElement = downcast<HTMLTemplateElement>(*clone);
Ref fragment = templateElement.content();
m_content->cloneChildNodes(fragment->protectedDocument(), nullptr, fragment);
}
return clone.releaseNonNull();
}
SerializedNode HTMLTemplateElement::serializeNode(CloningOperation type) const
{
Vector<SerializedNode> children;
switch (type) {
case CloningOperation::SelfOnly:
case CloningOperation::SelfWithTemplateContent:
break;
case CloningOperation::Everything:
children = serializeChildNodes();
break;
}
auto contentChildren = m_content && type != CloningOperation::SelfOnly
? std::optional(SerializedNode::DocumentFragment { m_content->serializeChildNodes() })
: std::nullopt;
return { SerializedNode::HTMLTemplateElement {
SerializedNode::Element {
{ WTF::move(children) },
{ tagQName() },
serializeAttributes<SerializedNode::Element::Attribute>(),
serializeShadowRoot<SerializedNode::ShadowRoot>()
}, WTF::move(contentChildren)
} };
}
void HTMLTemplateElement::didMoveToNewDocument(Document& oldDocument, Document& newDocument)
{
HTMLElement::didMoveToNewDocument(oldDocument, newDocument);
if (!m_content)
return;
ASSERT_WITH_SECURITY_IMPLICATION(&document() == &newDocument);
m_content->setTreeScopeRecursively(newDocument.ensureProtectedTemplateDocument());
}
} // namespace WebCore