Source/core/dom/shadow/ShadowRootRareData.h

/*
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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * this software without specific prior written permission.
 *
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef ShadowRootRareData_h
#define ShadowRootRareData_h

#include "core/dom/shadow/InsertionPoint.h"
#include "core/html/shadow/HTMLContentElement.h"
#include "core/html/shadow/HTMLShadowElement.h"
#include "wtf/RefPtr.h"
#include "wtf/Vector.h"

namespace WebCore {

class ShadowRootRareData {
public:
    ShadowRootRareData()
        : m_childShadowElementCount(0)
        , m_childContentElementCount(0)
        , m_childShadowRootCount(0)
    {
    }

    InsertionPoint* insertionPoint() const { return m_insertionPoint.get(); }
    void setInsertionPoint(PassRefPtr<InsertionPoint> insertionPoint) { m_insertionPoint = insertionPoint; }

    void addInsertionPoint(InsertionPoint*);
    void removeInsertionPoint(InsertionPoint*);

    bool hasShadowElementChildren() const { return m_childShadowElementCount; }
    bool hasContentElementChildren() const { return m_childContentElementCount; }
    bool hasShadowRootChildren() const { return m_childShadowRootCount; }

    void addChildShadowRoot() { ++m_childShadowRootCount; }
    void removeChildShadowRoot() { ASSERT(m_childShadowRootCount > 0); --m_childShadowRootCount; }

    unsigned childShadowRootCount() const { return m_childShadowRootCount; }

    const Vector<RefPtr<InsertionPoint> >& childInsertionPoints() { return m_childInsertionPoints; }
    void setChildInsertionPoints(Vector<RefPtr<InsertionPoint> >& list) { m_childInsertionPoints.swap(list); }
    void clearChildInsertionPoints() { m_childInsertionPoints.clear(); }

    StyleSheetList* styleSheets() { return m_styleSheetList.get(); }
    void setStyleSheets(PassRefPtr<StyleSheetList> styleSheetList) { m_styleSheetList = styleSheetList; }

private:
    RefPtr<InsertionPoint> m_insertionPoint;
    unsigned m_childShadowElementCount;
    unsigned m_childContentElementCount;
    unsigned m_childShadowRootCount;
    Vector<RefPtr<InsertionPoint> > m_childInsertionPoints;
    RefPtr<StyleSheetList> m_styleSheetList;
};

inline void ShadowRootRareData::addInsertionPoint(InsertionPoint* point)
{
    if (isHTMLShadowElement(point))
        ++m_childShadowElementCount;
    else if (isHTMLContentElement(point))
        ++m_childContentElementCount;
    else
        ASSERT_NOT_REACHED();
}

inline void ShadowRootRareData::removeInsertionPoint(InsertionPoint* point)
{
    if (isHTMLShadowElement(point))
        --m_childShadowElementCount;
    else if (isHTMLContentElement(point))
        --m_childContentElementCount;
    else
        ASSERT_NOT_REACHED();

    ASSERT(m_childContentElementCount >= 0);
    ASSERT(m_childShadowElementCount >= 0);
}

} // namespace WebCore

#endif