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#pragma once
27
28#include "AccessibilityObject.h"
29
30namespace WebCore {
31
32class AccessibilityScrollbar;
33class Scrollbar;
34class ScrollView;
35
36class AccessibilityScrollView final : public AccessibilityObject {
37public:
38 static Ref<AccessibilityScrollView> create(ScrollView*);
39 AccessibilityRole roleValue() const override { return AccessibilityRole::ScrollArea; }
40 ScrollView* scrollView() const { return m_scrollView; }
41
42 virtual ~AccessibilityScrollView();
43 void detach(AccessibilityDetachmentType, AXObjectCache*) override;
44
45 AccessibilityObject* webAreaObject() const;
46
47private:
48 explicit AccessibilityScrollView(ScrollView*);
49
50 ScrollableArea* getScrollableAreaIfScrollable() const override;
51 void scrollTo(const IntPoint&) const override;
52 bool computeAccessibilityIsIgnored() const override;
53 bool isAccessibilityScrollView() const override { return true; }
54 bool isEnabled() const override { return true; }
55
56 bool isAttachment() const override;
57 Widget* widgetForAttachmentView() const override;
58
59 AccessibilityObject* scrollBar(AccessibilityOrientation) override;
60 void addChildren() override;
61 void clearChildren() override;
62 AccessibilityObjectInterface* accessibilityHitTest(const IntPoint&) const override;
63 void updateChildrenIfNecessary() override;
64 void setNeedsToUpdateChildren() override { m_childrenDirty = true; }
65 void updateScrollbars();
66 void setFocused(bool) override;
67 bool canSetFocusAttribute() const override;
68 bool isFocused() const override;
69
70 FrameView* documentFrameView() const override;
71 LayoutRect elementRect() const override;
72 AccessibilityObject* parentObject() const override;
73 AccessibilityObject* parentObjectIfExists() const override;
74
75 AccessibilityObject* firstChild() const override { return webAreaObject(); }
76 AccessibilityScrollbar* addChildScrollbar(Scrollbar*);
77 void removeChildScrollbar(AccessibilityObject*);
78
79 ScrollView* m_scrollView;
80 RefPtr<AccessibilityObject> m_horizontalScrollbar;
81 RefPtr<AccessibilityObject> m_verticalScrollbar;
82 bool m_childrenDirty;
83};
84
85} // namespace WebCore
86
87SPECIALIZE_TYPE_TRAITS_ACCESSIBILITY(AccessibilityScrollView, isAccessibilityScrollView())
88