1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ScrollbarThemeClient_h
27#define ScrollbarThemeClient_h
28
29#include "IntPoint.h"
30#include "IntRect.h"
31#include "IntSize.h"
32#include "ScrollTypes.h"
33#include <wtf/PassOwnPtr.h>
34#include <wtf/Vector.h>
35
36namespace WebCore {
37
38class ScrollView;
39
40class ScrollbarThemeClient {
41public:
42    virtual int x() const = 0;
43    virtual int y() const = 0;
44    virtual int width() const = 0;
45    virtual int height() const = 0;
46    virtual IntSize size() const = 0;
47    virtual IntPoint location() const = 0;
48
49    virtual ScrollView* parent() const = 0;
50    virtual ScrollView* root() const = 0;
51
52    virtual void setFrameRect(const IntRect&) = 0;
53    virtual IntRect frameRect() const = 0;
54
55    virtual void invalidate() = 0;
56    virtual void invalidateRect(const IntRect&) = 0;
57
58    virtual ScrollbarOverlayStyle scrollbarOverlayStyle() const = 0;
59    virtual void getTickmarks(Vector<IntRect>&) const = 0;
60    virtual bool isScrollableAreaActive() const = 0;
61    virtual bool isScrollViewScrollbar() const = 0;
62
63    virtual IntPoint convertFromContainingWindow(const IntPoint& windowPoint) = 0;
64
65    virtual bool isCustomScrollbar() const = 0;
66    virtual ScrollbarOrientation orientation() const = 0;
67
68    virtual int value() const = 0;
69    virtual float currentPos() const = 0;
70    virtual int visibleSize() const = 0;
71    virtual int totalSize() const = 0;
72    virtual int maximum() const = 0;
73    virtual ScrollbarControlSize controlSize() const = 0;
74
75    virtual int lineStep() const = 0;
76    virtual int pageStep() const = 0;
77
78    virtual ScrollbarPart pressedPart() const = 0;
79    virtual ScrollbarPart hoveredPart() const = 0;
80
81    virtual void styleChanged() = 0;
82
83    virtual bool enabled() const = 0;
84    virtual void setEnabled(bool) = 0;
85
86    virtual bool isOverlayScrollbar() const = 0;
87
88    virtual bool isAlphaLocked() const = 0;
89    virtual void setIsAlphaLocked(bool) = 0;
90
91protected:
92    virtual ~ScrollbarThemeClient() { }
93};
94
95} // namespace WebCore
96
97#endif // ScollbarThemeClient_h
98