SliderThumbElement.h revision ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddb 
1/*
2 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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30 */
31
32#ifndef SliderThumbElement_h
33#define SliderThumbElement_h
34
35#include "FloatPoint.h"
36#include "HTMLDivElement.h"
37#include "HTMLNames.h"
38#include "RenderStyleConstants.h"
39#include <wtf/Forward.h>
40
41namespace WebCore {
42
43class HTMLElement;
44class Event;
45class FloatPoint;
46
47class SliderThumbElement : public HTMLDivElement {
48public:
49    static PassRefPtr<SliderThumbElement> create(Document*);
50
51    bool inDragMode() const { return m_inDragMode; }
52
53    void dragFrom(const IntPoint&);
54    virtual void defaultEventHandler(Event*);
55    virtual void detach();
56    virtual AtomicString shadowPseudoId() const;
57
58private:
59    SliderThumbElement(Document*);
60    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
61    void startDragging();
62    void stopDragging();
63    void setPosition(const IntPoint&);
64
65    FloatPoint m_offsetToThumb;
66    bool m_inDragMode;
67};
68
69inline SliderThumbElement::SliderThumbElement(Document* document)
70    : HTMLDivElement(HTMLNames::divTag, document)
71    , m_inDragMode(false)
72{
73}
74
75inline PassRefPtr<SliderThumbElement> SliderThumbElement::create(Document* document)
76{
77    return adoptRef(new SliderThumbElement(document));
78}
79
80inline AtomicString SliderThumbElement::shadowPseudoId() const
81{
82    DEFINE_STATIC_LOCAL(AtomicString, sliderThumb, ("-webkit-slider-thumb"));
83    return sliderThumb;
84}
85
86inline SliderThumbElement* toSliderThumbElement(Node* node)
87{
88    ASSERT(!node || node->isHTMLElement());
89    return static_cast<SliderThumbElement*>(node);
90}
91
92}
93
94#endif
95