/*

 * Copyright (C) 2010 Alex Milowski (alex@milowski.com). 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.

 *

 * 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.

 */

#ifndef RenderMathMLOperator_h

#define RenderMathMLOperator_h

#if ENABLE(MATHML)

#include "RenderMathMLBlock.h"

namespace WebCore {

class RenderMathMLOperator : public RenderMathMLBlock {

public:

    RenderMathMLOperator(Node* container);

    RenderMathMLOperator(Node* container, UChar operatorChar);

    virtual bool isRenderMathMLOperator() const { return true; }

    virtual void stretchToHeight(int pixelHeight);

    virtual void updateFromElement(); 

    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;

    virtual int baselinePosition(bool , bool) const;    

protected:

    virtual void layout();

    virtual RefPtr<RenderStyle> createStackableStyle(int size, int topRelative);

    virtual RenderBlock* createGlyph(UChar glyph, int size = 0, int charRelative = 0, int topRelative = 0);

private:

    int m_stretchHeight;

    bool m_isStacked;

    bool m_isCentered;

    UChar m_operator;

};

inline RenderMathMLOperator* toRenderMathMLOperator(RenderMathMLBlock* block)

{ 

    ASSERT(!block || block->isRenderMathMLOperator());

    return static_cast<RenderMathMLOperator*>(block);

}

inline const RenderMathMLOperator* toRenderMathMLOperator(const RenderMathMLBlock* block)

{ 

    ASSERT(!block || block->isRenderMathMLOperator());

    return static_cast<const RenderMathMLOperator*>(block);

}

}

#endif // ENABLE(MATHML)

#endif // RenderMathMLOperator_h