SliderThumbElement.h   [plain text]

/*
 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * notice, this list of conditions and the following disclaimer.
 *     * 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.
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 * 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
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 */

#ifndef SliderThumbElement_h
#define SliderThumbElement_h

#include "FloatPoint.h"
#include "HTMLDivElement.h"
#include "HTMLNames.h"
#include "RenderStyleConstants.h"
#include <wtf/Forward.h>

namespace WebCore {

class HTMLElement;
class HTMLInputElement;
class Event;
class FloatPoint;

class SliderThumbElement : public HTMLDivElement {
public:
    static PassRefPtr<SliderThumbElement> create(Document*);

    bool inDragMode() const { return m_inDragMode; }
    void setPositionFromValue();

    void dragFrom(const IntPoint&);
    virtual void defaultEventHandler(Event*);
    virtual void detach();
    virtual const AtomicString& shadowPseudoId() const;

private:
    SliderThumbElement(Document*);
    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
    void startDragging();
    void stopDragging();
    void setPositionFromPoint(const IntPoint&);
    HTMLInputElement* hostInput();

    FloatPoint m_offsetToThumb;
    bool m_inDragMode;
};

inline SliderThumbElement::SliderThumbElement(Document* document)
    : HTMLDivElement(HTMLNames::divTag, document)
    , m_inDragMode(false)
{
}

inline PassRefPtr<SliderThumbElement> SliderThumbElement::create(Document* document)
{
    return adoptRef(new SliderThumbElement(document));
}

inline SliderThumbElement* toSliderThumbElement(Node* node)
{
    ASSERT(!node || node->isHTMLElement());
    return static_cast<SliderThumbElement*>(node);
}

}

#endif