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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2018 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "DocumentFragment.h"
#include "CSSTokenizerInputStream.h"
#include "Document.h"
#include "ElementIterator.h"
#include "HTMLDocumentParser.h"
#include "HTMLDocumentParserFastPath.h"
#include "Page.h"
#include "TypedElementDescendantIteratorInlines.h"
#include "XMLDocumentParser.h"
#include "markup.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(DocumentFragment);
DocumentFragment::DocumentFragment(Document& document, OptionSet<TypeFlag> typeFlags)
: ContainerNode(document, DOCUMENT_FRAGMENT_NODE, typeFlags)
{
}
Ref<DocumentFragment> DocumentFragment::create(Document& document)
{
return adoptRef(*new DocumentFragment(document));
}
Ref<DocumentFragment> DocumentFragment::createForInnerOuterHTML(Document& document)
{
auto node = adoptRef(*new DocumentFragment(document));
node->setStateFlag(StateFlag::IsSpecialInternalNode);
ASSERT(node->isDocumentFragmentForInnerOuterHTML());
return node;
}
String DocumentFragment::nodeName() const
{
return "#document-fragment"_s;
}
bool DocumentFragment::childTypeAllowed(NodeType type) const
{
switch (type) {
case ELEMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
case COMMENT_NODE:
case TEXT_NODE:
case CDATA_SECTION_NODE:
return true;
default:
return false;
}
}
Ref<Node> DocumentFragment::cloneNodeInternal(Document& document, CloningOperation type, CustomElementRegistry* registry)
{
Ref clone = create(document);
switch (type) {
case CloningOperation::OnlySelf:
case CloningOperation::SelfWithTemplateContent:
break;
case CloningOperation::Everything:
cloneChildNodes(document, registry, clone);
break;
}
return clone;
}
void DocumentFragment::parseHTML(const String& source, Element& contextElement, OptionSet<ParserContentPolicy> parserContentPolicy, CustomElementRegistry* registry)
{
Ref document = this->document();
if (tryFastParsingHTMLFragment(source, document, *this, contextElement, parserContentPolicy)) {
#if ASSERT_ENABLED
// As a sanity check for the fast-path, create another fragment using the full parser and compare the results.
auto referenceFragment = DocumentFragment::create(document);
HTMLDocumentParser::parseDocumentFragment(source, referenceFragment, contextElement, parserContentPolicy);
ASSERT(serializeFragment(*this, SerializedNodes::SubtreesOfChildren) == serializeFragment(referenceFragment, SerializedNodes::SubtreesOfChildren));
#endif
return;
}
if (hasChildNodes())
removeChildren();
HTMLDocumentParser::parseDocumentFragment(source, *this, contextElement, parserContentPolicy, registry);
}
bool DocumentFragment::parseXML(const String& source, Element* contextElement, OptionSet<ParserContentPolicy> parserContentPolicy)
{
return XMLDocumentParser::parseDocumentFragment(source, *this, contextElement, parserContentPolicy);
}
Element* DocumentFragment::getElementById(const AtomString& id) const
{
if (id.isEmpty())
return nullptr;
// Fast path for ShadowRoot, where we are both a DocumentFragment and a TreeScope.
if (isTreeScope())
return treeScope().getElementById(id).get();
// Otherwise, fall back to iterating all of the element descendants.
for (auto& element : descendantsOfType<Element>(*this)) {
if (element.getIdAttribute() == id)
return const_cast<Element*>(&element);
}
return nullptr;
}
}
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