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 * 1.  Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 * 2.  Redistributions in binary form must reproduce the above copyright
10 *     notice, this list of conditions and the following disclaimer in the
11 *     documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#ifndef WebPluginScrollbarImpl_h
26#define WebPluginScrollbarImpl_h
27
28#include "public/web/WebPluginScrollbar.h"
29
30#include "wtf/RefPtr.h"
31#include "wtf/Vector.h"
32
33namespace blink {
34
35class IntPoint;
36class IntRect;
37class Scrollbar;
38class ScrollbarGroup;
39
40class WebPluginScrollbarImpl FINAL : public WebPluginScrollbar {
41public:
42    WebPluginScrollbarImpl(Orientation, ScrollbarGroup*, WebPluginScrollbarClient*);
43    virtual ~WebPluginScrollbarImpl();
44
45    void setScrollOffset(int);
46    void invalidateScrollbarRect(const IntRect&);
47    // FIXME: Combine this with the other getTickmarks method
48    void getTickmarks(Vector<IntRect>&) const;
49    IntPoint convertFromContainingViewToScrollbar(const IntPoint& parentPoint) const;
50    void scrollbarStyleChanged();
51
52    int scrollOffset() { return m_scrollOffset; }
53    Scrollbar* scrollbar() { return m_scrollbar.get(); }
54
55    // WebScrollbar methods
56    virtual bool isOverlay() const OVERRIDE;
57    virtual int value() const OVERRIDE;
58    virtual WebPoint location() const OVERRIDE;
59    virtual WebSize size() const OVERRIDE;
60    virtual bool enabled() const OVERRIDE;
61    virtual int maximum() const OVERRIDE;
62    virtual int totalSize() const OVERRIDE;
63    virtual bool isScrollViewScrollbar() const OVERRIDE;
64    virtual bool isScrollableAreaActive() const OVERRIDE;
65    virtual void getTickmarks(WebVector<WebRect>& tickmarks) const OVERRIDE;
66    virtual WebScrollbar::ScrollbarControlSize controlSize() const OVERRIDE;
67    virtual WebScrollbar::ScrollbarPart pressedPart() const OVERRIDE;
68    virtual WebScrollbar::ScrollbarPart hoveredPart() const OVERRIDE;
69    virtual WebScrollbar::ScrollbarOverlayStyle scrollbarOverlayStyle() const OVERRIDE;
70    virtual WebScrollbar::Orientation orientation() const OVERRIDE;
71    virtual bool isLeftSideVerticalScrollbar() const OVERRIDE;
72    virtual bool isCustomScrollbar() const OVERRIDE;
73
74    // WebPluginScrollbar methods
75    virtual void setLocation(const WebRect&) OVERRIDE;
76    virtual void setValue(int position) OVERRIDE;
77    virtual void setDocumentSize(int) OVERRIDE;
78    virtual void scroll(ScrollDirection, ScrollGranularity, float multiplier) OVERRIDE;
79    virtual void paint(WebCanvas*, const WebRect&) OVERRIDE;
80    virtual bool handleInputEvent(const WebInputEvent&) OVERRIDE;
81    virtual bool isAlphaLocked() const OVERRIDE;
82    virtual void setIsAlphaLocked(bool) OVERRIDE;
83
84private:
85    bool onMouseDown(const WebInputEvent&);
86    bool onMouseUp(const WebInputEvent&);
87    bool onMouseMove(const WebInputEvent&);
88    bool onMouseLeave(const WebInputEvent&);
89    bool onMouseWheel(const WebInputEvent&);
90    bool onKeyDown(const WebInputEvent&);
91
92    ScrollbarGroup* m_group;
93    WebPluginScrollbarClient* m_client;
94
95    int m_scrollOffset;
96    RefPtr<Scrollbar> m_scrollbar;
97};
98
99} // namespace blink
100
101#endif
102