/*

 * Copyright (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)

 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.

 *

 * 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 RenderCounter_h

#define RenderCounter_h

#include "CounterContent.h"

#include "RenderText.h"

namespace WebCore {

class CounterNode;

class RenderCounter : public RenderText {

public:

    RenderCounter(Document*, const CounterContent&);

    // Removes the reference to the CounterNode associated with this renderer

    // if its identifier matches the argument.

    // This is used to cause a counter display update when the CounterNode

    // tree for identifier changes.

    void invalidate(const AtomicString& identifier);

    static void destroyCounterNodes(RenderObject*);

    static void destroyCounterNode(RenderObject*, const AtomicString& identifier);

    static void rendererSubtreeAttached(RenderObject*);

    static void rendererStyleChanged(RenderObject*, const RenderStyle* oldStyle, const RenderStyle* newStyle);

private:

    virtual const char* renderName() const;

    virtual bool isCounter() const;

    virtual PassRefPtr<StringImpl> originalText() const;

    virtual void calcPrefWidths(int leadWidth);

    CounterContent m_counter;

    mutable CounterNode* m_counterNode;

};

inline RenderCounter* toRenderCounter(RenderObject* object)

{

    ASSERT(!object || object->isCounter());

    return static_cast<RenderCounter*>(object);

}

// This will catch anyone doing an unnecessary cast.

void toRenderCounter(const RenderCounter*);

} // namespace WebCore

#endif // RenderCounter_h