/*

 * 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 "ClassNodeList.h"

#include "DynamicNodeList.h"

#include "NameNodeList.h"

#include "QualifiedName.h"

#include "StringHash.h"

#include "TagNodeList.h"

#include <wtf/HashSet.h>

#include <wtf/OwnPtr.h>

#include <wtf/PassOwnPtr.h>

namespace WebCore {

struct NodeListsNodeData : Noncopyable {

    typedef HashSet<DynamicNodeList*> NodeListSet;

    NodeListSet m_listsWithCaches;

    RefPtr<DynamicNodeList::Caches> m_childNodeListCaches;

    typedef HashMap<String, ClassNodeList*> ClassNodeListCache;

    ClassNodeListCache m_classNodeListCache;

    typedef HashMap<String, NameNodeList*> NameNodeListCache;

    NameNodeListCache m_nameNodeListCache;

    typedef HashMap<RefPtr<QualifiedName::QualifiedNameImpl>, TagNodeList*> TagNodeListCache;

    TagNodeListCache m_tagNodeListCache;

    RefPtr<DynamicNodeList> m_labelsNodeListCache;

    static PassOwnPtr<NodeListsNodeData> create()

    {

        return new NodeListsNodeData;

    }

    void invalidateCaches();

    void invalidateCachesThatDependOnAttributes();

    bool isEmpty() const;

private:

    NodeListsNodeData()

        : m_childNodeListCaches(DynamicNodeList::Caches::create()), m_labelsNodeListCache(0)

    {

    }

};

class NodeRareData : public Noncopyable {

public:    

    NodeRareData()

        : m_tabIndex(0)

        , m_tabIndexWasSetExplicitly(false)

        , m_isFocused(false)

        , m_needsFocusAppearanceUpdateSoonAfterAttach(false)

    {

    }

    virtual ~NodeRareData()

    {

    }

    typedef HashMap<const Node*, NodeRareData*> NodeRareDataMap;

    static NodeRareDataMap& rareDataMap()

    {

        static NodeRareDataMap* dataMap = new NodeRareDataMap;

        return *dataMap;

    }

    static NodeRareData* rareDataFromMap(const Node* node)

    {

        return rareDataMap().get(node);

    }

    void clearNodeLists() { m_nodeLists.clear(); }

    void setNodeLists(PassOwnPtr<NodeListsNodeData> lists) { m_nodeLists = lists; }

    NodeListsNodeData* nodeLists() const { return m_nodeLists.get(); }

    short tabIndex() const { return m_tabIndex; }

    void setTabIndexExplicitly(short index) { m_tabIndex = index; m_tabIndexWasSetExplicitly = true; }

    bool tabIndexSetExplicitly() const { return m_tabIndexWasSetExplicitly; }

    EventTargetData* eventTargetData() { return m_eventTargetData.get(); }

    EventTargetData* ensureEventTargetData()

    {

        if (!m_eventTargetData)

            m_eventTargetData.set(new EventTargetData);

        return m_eventTargetData.get();

    }

    bool isFocused() const { return m_isFocused; }

    void setFocused(bool focused) { m_isFocused = focused; }

protected:

    // for ElementRareData

    bool needsFocusAppearanceUpdateSoonAfterAttach() const { return m_needsFocusAppearanceUpdateSoonAfterAttach; }

    void setNeedsFocusAppearanceUpdateSoonAfterAttach(bool needs) { m_needsFocusAppearanceUpdateSoonAfterAttach = needs; }

private:

    OwnPtr<NodeListsNodeData> m_nodeLists;

    OwnPtr<EventTargetData> m_eventTargetData;

    short m_tabIndex;

    bool m_tabIndexWasSetExplicitly : 1;

    bool m_isFocused : 1;

    bool m_needsFocusAppearanceUpdateSoonAfterAttach : 1;

};

} // namespace WebCore

#endif // NodeRareData_h