1/*
2 * Copyright (C) 2011 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 ScrollbarGroup_h
27#define ScrollbarGroup_h
28
29#include "platform/scroll/ScrollableArea.h"
30
31#include "wtf/RefPtr.h"
32
33namespace blink {
34
35class FrameView;
36class WebPluginScrollbarImpl;
37
38class ScrollbarGroup FINAL : public ScrollableArea {
39public:
40    ScrollbarGroup(FrameView*, const IntRect& frameRect);
41    virtual ~ScrollbarGroup();
42
43    void scrollbarCreated(WebPluginScrollbarImpl*);
44    void scrollbarDestroyed(WebPluginScrollbarImpl*);
45    void setLastMousePosition(const IntPoint&);
46    void setFrameRect(const IntRect&);
47
48    // ScrollableArea methods
49    virtual int scrollSize(ScrollbarOrientation) const OVERRIDE;
50    virtual void setScrollOffset(const IntPoint&) OVERRIDE;
51    virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&) OVERRIDE;
52    virtual void invalidateScrollCornerRect(const IntRect&) OVERRIDE;
53    virtual bool isActive() const OVERRIDE;
54    virtual IntRect scrollCornerRect() const OVERRIDE { return IntRect(); }
55    virtual bool isScrollCornerVisible() const OVERRIDE;
56    virtual void getTickmarks(Vector<IntRect>&) const OVERRIDE;
57    virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint& parentPoint) const OVERRIDE;
58    virtual Scrollbar* horizontalScrollbar() const OVERRIDE;
59    virtual Scrollbar* verticalScrollbar() const OVERRIDE;
60    virtual IntPoint scrollPosition() const OVERRIDE;
61    virtual IntPoint minimumScrollPosition() const OVERRIDE;
62    virtual IntPoint maximumScrollPosition() const OVERRIDE;
63    virtual int visibleHeight() const OVERRIDE;
64    virtual int visibleWidth() const OVERRIDE;
65    virtual IntSize contentsSize() const OVERRIDE;
66    virtual IntSize overhangAmount() const OVERRIDE;
67    virtual IntPoint lastKnownMousePosition() const OVERRIDE;
68    virtual bool shouldSuspendScrollAnimations() const OVERRIDE;
69    virtual void scrollbarStyleChanged() OVERRIDE;
70    virtual bool scrollbarsCanBeActive() const OVERRIDE;
71    virtual IntRect scrollableAreaBoundingBox() const OVERRIDE;
72    virtual bool userInputScrollable(ScrollbarOrientation) const OVERRIDE;
73    virtual bool shouldPlaceVerticalScrollbarOnLeft() const OVERRIDE;
74    virtual int pageStep(ScrollbarOrientation) const OVERRIDE;
75
76private:
77    FrameView* m_frameView;
78    IntPoint m_lastMousePosition;
79    IntRect m_frameRect;
80    WebPluginScrollbarImpl* m_horizontalScrollbar;
81    WebPluginScrollbarImpl* m_verticalScrollbar;
82};
83
84} // namespace blink
85
86#endif
87