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/*
* Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2008 David Smith <catfish.man@gmail.com>
*
* 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.
*
*/
#ifndef NodeRareData_h
#define NodeRareData_h
#include "core/dom/MutationObserverRegistration.h"
#include "core/dom/NodeListsNodeData.h"
#include "platform/heap/Handle.h"
#include "wtf/HashSet.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
namespace blink {
class NodeMutationObserverData final : public NoBaseWillBeGarbageCollected<NodeMutationObserverData> {
WTF_MAKE_NONCOPYABLE(NodeMutationObserverData);
WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
public:
WillBeHeapVector<OwnPtrWillBeMember<MutationObserverRegistration> > registry;
WillBeHeapHashSet<RawPtrWillBeMember<MutationObserverRegistration> > transientRegistry;
static PassOwnPtrWillBeRawPtr<NodeMutationObserverData> create()
{
return adoptPtrWillBeNoop(new NodeMutationObserverData);
}
void trace(Visitor* visitor)
{
#if ENABLE(OILPAN)
visitor->trace(registry);
visitor->trace(transientRegistry);
#endif
}
private:
NodeMutationObserverData() { }
};
class NodeRareData : public NoBaseWillBeGarbageCollectedFinalized<NodeRareData>, public NodeRareDataBase {
WTF_MAKE_NONCOPYABLE(NodeRareData);
WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
public:
static NodeRareData* create(RenderObject* renderer)
{
return new NodeRareData(renderer);
}
void clearNodeLists() { m_nodeLists.clear(); }
NodeListsNodeData* nodeLists() const { return m_nodeLists.get(); }
NodeListsNodeData& ensureNodeLists()
{
if (!m_nodeLists)
m_nodeLists = NodeListsNodeData::create();
return *m_nodeLists;
}
NodeMutationObserverData* mutationObserverData() { return m_mutationObserverData.get(); }
NodeMutationObserverData& ensureMutationObserverData()
{
if (!m_mutationObserverData)
m_mutationObserverData = NodeMutationObserverData::create();
return *m_mutationObserverData;
}
unsigned connectedSubframeCount() const { return m_connectedFrameCount; }
void incrementConnectedSubframeCount(unsigned amount)
{
m_connectedFrameCount += amount;
}
void decrementConnectedSubframeCount(unsigned amount)
{
ASSERT(m_connectedFrameCount);
ASSERT(amount <= m_connectedFrameCount);
m_connectedFrameCount -= amount;
}
bool hasElementFlag(ElementFlags mask) const { return m_elementFlags & mask; }
void setElementFlag(ElementFlags mask, bool value) { m_elementFlags = (m_elementFlags & ~mask) | (-(int32_t)value & mask); }
void clearElementFlag(ElementFlags mask) { m_elementFlags &= ~mask; }
bool hasRestyleFlag(DynamicRestyleFlags mask) const { return m_restyleFlags & mask; }
void setRestyleFlag(DynamicRestyleFlags mask) { m_restyleFlags |= mask; RELEASE_ASSERT(m_restyleFlags); }
bool hasRestyleFlags() const { return m_restyleFlags; }
void clearRestyleFlags() { m_restyleFlags = 0; }
enum {
ConnectedFrameCountBits = 10, // Must fit Page::maxNumberOfFrames.
};
void trace(Visitor*);
void traceAfterDispatch(Visitor*);
void finalizeGarbageCollectedObject();
protected:
explicit NodeRareData(RenderObject* renderer)
: NodeRareDataBase(renderer)
, m_connectedFrameCount(0)
, m_elementFlags(0)
, m_restyleFlags(0)
, m_isElementRareData(false)
{ }
private:
OwnPtrWillBeMember<NodeListsNodeData> m_nodeLists;
OwnPtrWillBeMember<NodeMutationObserverData> m_mutationObserverData;
unsigned m_connectedFrameCount : ConnectedFrameCountBits;
unsigned m_elementFlags : NumberOfElementFlags;
unsigned m_restyleFlags : NumberOfDynamicRestyleFlags;
protected:
unsigned m_isElementRareData : 1;
};
} // namespace blink
#endif // NodeRareData_h
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