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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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.
* * 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.
*/
#pragma once
#include "Element.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/AtomString.h>
namespace WebCore {
class HTMLImageElement;
class HTMLLabelElement;
class HTMLMapElement;
class TreeScope;
class TreeScopeOrderedMap {
WTF_MAKE_TZONE_ALLOCATED(TreeScopeOrderedMap);
public:
void add(const AtomString&, Element&, const TreeScope&);
void remove(const AtomString&, Element&);
void clear();
bool contains(const AtomString&) const;
bool containsSingle(const AtomString&) const;
bool containsMultiple(const AtomString&) const;
// concrete instantiations of the get<>() method template
RefPtr<Element> getElementById(const AtomString&, const TreeScope&) const;
RefPtr<Element> getElementByName(const AtomString&, const TreeScope&) const;
RefPtr<HTMLMapElement> getElementByMapName(const AtomString&, const TreeScope&) const;
RefPtr<HTMLImageElement> getElementByUsemap(const AtomString&, const TreeScope&) const;
const Vector<WeakRef<Element, WeakPtrImplWithEventTargetData>>* getElementsByLabelForAttribute(const AtomString&, const TreeScope&) const;
RefPtr<Element> getElementByWindowNamedItem(const AtomString&, const TreeScope&) const;
RefPtr<Element> getElementByDocumentNamedItem(const AtomString&, const TreeScope&) const;
const Vector<WeakRef<Element, WeakPtrImplWithEventTargetData>>* getAllElementsById(const AtomString&, const TreeScope&) const;
const Vector<AtomString> keys() const;
private:
template <typename KeyMatchingFunction>
RefPtr<Element> get(const AtomString&, const TreeScope&, const KeyMatchingFunction&) const;
template <typename KeyMatchingFunction>
Vector<WeakRef<Element, WeakPtrImplWithEventTargetData>>* getAll(const AtomString&, const TreeScope&, const KeyMatchingFunction&) const;
struct MapEntry {
MapEntry() = default;
explicit MapEntry(Element* firstElement)
: element(firstElement)
, count(1)
{ }
WeakPtr<Element, WeakPtrImplWithEventTargetData> element;
unsigned count { 0 };
Vector<WeakRef<Element, WeakPtrImplWithEventTargetData>> orderedList;
#if ASSERT_ENABLED || ENABLE(SECURITY_ASSERTIONS)
UncheckedKeyHashSet<WeakRef<Element, WeakPtrImplWithEventTargetData>> registeredElements;
#endif
};
using Map = UncheckedKeyHashMap<AtomString, MapEntry>;
mutable Map m_map;
};
inline bool TreeScopeOrderedMap::containsSingle(const AtomString& id) const
{
auto it = m_map.find(id);
return it != m_map.end() && it->value.count == 1;
}
inline bool TreeScopeOrderedMap::contains(const AtomString& id) const
{
return m_map.contains(id);
}
inline bool TreeScopeOrderedMap::containsMultiple(const AtomString& id) const
{
auto it = m_map.find(id);
return it != m_map.end() && it->value.count > 1;
}
} // namespace WebCore
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