AccessibilityScrollView.h revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2011 Apple 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 AccessibilityScrollView_h
27#define AccessibilityScrollView_h
28
29#include "AccessibilityObject.h"
30
31namespace WebCore {
32
33class AccessibilityScrollbar;
34class Scrollbar;
35class ScrollView;
36
37class AccessibilityScrollView : public AccessibilityObject {
38public:
39    static PassRefPtr<AccessibilityScrollView> create(ScrollView*);
40    virtual AccessibilityRole roleValue() const { return ScrollAreaRole; }
41    ScrollView* scrollView() const { return m_scrollView.get(); }
42
43private:
44    AccessibilityScrollView(ScrollView*);
45
46    virtual bool accessibilityIsIgnored() const { return false; }
47    virtual bool isAccessibilityScrollView() const { return true; }
48    virtual AccessibilityObject* scrollBar(AccessibilityOrientation) const;
49    virtual void addChildren();
50    virtual Document* document() const;
51    virtual AccessibilityObject* accessibilityHitTest(const IntPoint&) const;
52    virtual const AccessibilityChildrenVector& children();
53    virtual void updateChildrenIfNecessary();
54
55    virtual IntRect elementRect() const;
56    virtual AccessibilityObject* parentObject() const;
57
58    AccessibilityObject* webAreaObject() const;
59    AccessibilityScrollbar* addChildScrollbar(Scrollbar*);
60    void removeChildScrollbar(AccessibilityObject*);
61
62    RefPtr<ScrollView> m_scrollView;
63    RefPtr<AccessibilityObject> m_horizontalScrollbar;
64    RefPtr<AccessibilityObject> m_verticalScrollbar;
65};
66
67inline AccessibilityScrollView* toAccessibilityScrollView(AccessibilityObject* object)
68{
69    ASSERT(!object || object->isAccessibilityScrollView());
70    if (!object->isAccessibilityScrollView())
71        return 0;
72
73    return static_cast<AccessibilityScrollView*>(object);
74}
75
76} // namespace WebCore
77
78#endif // AccessibilityScrollView_h
79
80