/*
 * Copyright (c) 2014, Opera Software ASA. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of Opera Software ASA 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 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 */

#ifndef RenderMultiColumnSpannerPlaceholder_h
#define RenderMultiColumnSpannerPlaceholder_h

#include "RenderBox.h"

namespace WebCore {

class RenderMultiColumnFlowThread;

class RenderMultiColumnSpannerPlaceholder FINAL : public RenderBox {
public:
    static RenderMultiColumnSpannerPlaceholder* createAnonymous(RenderMultiColumnFlowThread*, RenderBox* spanner, RenderStyle* parentStyle);

    virtual bool isRenderMultiColumnSpannerPlaceholder() const OVERRIDE { return true; }
    RenderBox* spanner() const { return m_spanner; }
    RenderMultiColumnFlowThread* flowThread() const { return m_flowThread; }

private:
    RenderMultiColumnSpannerPlaceholder(RenderMultiColumnFlowThread*, RenderBox* spanner, PassRefPtr<RenderStyle>);

    virtual bool canHaveChildren() const { return false; }
    virtual void paint(PaintInfo&, const LayoutPoint&) { }
    virtual const char* renderName() const OVERRIDE;

    RenderBox* m_spanner;
    RenderMultiColumnFlowThread* m_flowThread;
};

inline RenderMultiColumnSpannerPlaceholder* toRenderMultiColumnSpannerPlaceholder(RenderObject* object)
{
    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderMultiColumnSpannerPlaceholder());
    return static_cast<RenderMultiColumnSpannerPlaceholder*>(object);
}

inline const RenderMultiColumnSpannerPlaceholder* toRenderMultiColumnSpannerPlaceholder(const RenderObject* object)
{
    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderMultiColumnSpannerPlaceholder());
    return static_cast<const RenderMultiColumnSpannerPlaceholder*>(object);
}

// This will catch anyone doing an unnecessary cast.
void toRenderMultiColumnSpannerPlaceholder(const RenderMultiColumnSpannerPlaceholder*);

//RENDER_OBJECT_TYPE_CASTS(RenderMultiColumnSpannerPlaceholder, isRenderMultiColumnSpannerPlaceholder())

} // namespace WebCore

#endif // RenderMultiColumnSpannerPlaceholder_h
