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
31 namespace WebCore {
32
33 class AccessibilityScrollbar;
34 class Scrollbar;
35 class ScrollView;
36
37 class AccessibilityScrollView : public AccessibilityObject {
38 public:
39 static PassRefPtr<AccessibilityScrollView> create(ScrollView*);
roleValue()40 virtual AccessibilityRole roleValue() const { return ScrollAreaRole; }
scrollView()41 ScrollView* scrollView() const { return m_scrollView.get(); }
42
43 private:
44 AccessibilityScrollView(ScrollView*);
45
accessibilityIsIgnored()46 virtual bool accessibilityIsIgnored() const { return false; }
isAccessibilityScrollView()47 virtual bool isAccessibilityScrollView() const { return true; }
48
49 virtual bool isAttachment() const;
50 virtual Widget* widgetForAttachmentView() const;
51
52 virtual AccessibilityObject* scrollBar(AccessibilityOrientation) const;
53 virtual void addChildren();
54 virtual AccessibilityObject* accessibilityHitTest(const IntPoint&) const;
55 virtual const AccessibilityChildrenVector& children();
56 virtual void updateChildrenIfNecessary();
57
58 virtual FrameView* documentFrameView() const;
59 virtual IntRect elementRect() const;
60 virtual AccessibilityObject* parentObject() const;
61
62 AccessibilityObject* webAreaObject() const;
firstChild()63 virtual AccessibilityObject* firstChild() const { return webAreaObject(); }
64 AccessibilityScrollbar* addChildScrollbar(Scrollbar*);
65 void removeChildScrollbar(AccessibilityObject*);
66
67 RefPtr<ScrollView> m_scrollView;
68 RefPtr<AccessibilityObject> m_horizontalScrollbar;
69 RefPtr<AccessibilityObject> m_verticalScrollbar;
70 };
71
toAccessibilityScrollView(AccessibilityObject * object)72 inline AccessibilityScrollView* toAccessibilityScrollView(AccessibilityObject* object)
73 {
74 ASSERT(!object || object->isAccessibilityScrollView());
75 if (!object->isAccessibilityScrollView())
76 return 0;
77
78 return static_cast<AccessibilityScrollView*>(object);
79 }
80
81 } // namespace WebCore
82
83 #endif // AccessibilityScrollView_h
84
85