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/*
* Copyright (C) 2011 Google 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* 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
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* 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.
*/
#ifndef HTMLContentElement_h
#define HTMLContentElement_h
#include "core/CoreExport.h"
#include "core/css/CSSSelectorList.h"
#include "core/dom/shadow/InsertionPoint.h"
#include "platform/heap/Handle.h"
namespace blink {
class HTMLContentSelectFilter
: public GarbageCollectedFinalized<HTMLContentSelectFilter> {
public:
virtual ~HTMLContentSelectFilter() {}
virtual bool canSelectNode(const HeapVector<Member<Node>, 32>& siblings,
int nth) const = 0;
DEFINE_INLINE_VIRTUAL_TRACE() {}
};
class CORE_EXPORT HTMLContentElement final : public InsertionPoint {
DEFINE_WRAPPERTYPEINFO();
public:
static HTMLContentElement* create(Document&,
HTMLContentSelectFilter* = nullptr);
~HTMLContentElement() override;
bool canAffectSelector() const override { return true; }
bool canSelectNode(const HeapVector<Member<Node>, 32>& siblings,
int nth) const;
const CSSSelectorList& selectorList() const;
bool isSelectValid() const;
DECLARE_VIRTUAL_TRACE();
private:
HTMLContentElement(Document&, HTMLContentSelectFilter*);
void parseAttribute(const AttributeModificationParams&) override;
bool validateSelect() const;
void parseSelect();
bool matchSelector(Element&) const;
bool m_shouldParseSelect;
bool m_isValidSelector;
AtomicString m_select;
CSSSelectorList m_selectorList;
Member<HTMLContentSelectFilter> m_filter;
};
inline const CSSSelectorList& HTMLContentElement::selectorList() const {
if (m_shouldParseSelect)
const_cast<HTMLContentElement*>(this)->parseSelect();
return m_selectorList;
}
inline bool HTMLContentElement::isSelectValid() const {
if (m_shouldParseSelect)
const_cast<HTMLContentElement*>(this)->parseSelect();
return m_isValidSelector;
}
inline bool HTMLContentElement::canSelectNode(
const HeapVector<Member<Node>, 32>& siblings,
int nth) const {
if (m_filter)
return m_filter->canSelectNode(siblings, nth);
if (m_select.isNull() || m_select.isEmpty())
return true;
if (!isSelectValid())
return false;
if (!siblings[nth]->isElementNode())
return false;
return matchSelector(*toElement(siblings[nth]));
}
} // namespace blink
#endif // HTMLContentElement_h
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