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26 #ifndef AXScrollView_h
27 #define AXScrollView_h
29 #include "core/accessibility/AXObject.h"
37 class AXScrollView final : public AXObject {
39 static PassRefPtr<AXScrollView> create(FrameView*);
40 virtual AccessibilityRole roleValue() const override { return ScrollAreaRole; }
41 FrameView* scrollView() const { return m_scrollView; }
43 virtual ~AXScrollView();
44 virtual void detach() override;
47 virtual ScrollableArea* getScrollableAreaIfScrollable() const override;
48 virtual void scrollTo(const IntPoint&) const override;
51 explicit AXScrollView(FrameView*);
53 virtual bool computeAccessibilityIsIgnored() const override;
54 virtual bool isAXScrollView() const override { return true; }
55 virtual bool isEnabled() const override { return true; }
57 virtual bool isAttachment() const override;
58 virtual Widget* widgetForAttachmentView() const override;
60 virtual AXObject* scrollBar(AccessibilityOrientation) override;
61 virtual void addChildren() override;
62 virtual void clearChildren() override;
63 virtual AXObject* accessibilityHitTest(const IntPoint&) const override;
64 virtual void updateChildrenIfNecessary() override;
65 virtual void setNeedsToUpdateChildren() override { m_childrenDirty = true; }
66 void updateScrollbars();
68 virtual FrameView* documentFrameView() const override;
69 virtual LayoutRect elementRect() const override;
70 virtual AXObject* computeParent() const override;
71 virtual AXObject* computeParentIfExists() const override;
73 AXObject* webAreaObject() const;
74 virtual AXObject* firstChild() const override { return webAreaObject(); }
75 AXScrollbar* addChildScrollbar(Scrollbar*);
76 void removeChildScrollbar(AXObject*);
78 // FIXME: Oilpan: Frame/ScrollView is on the heap and its
79 // AXScrollView is detached&removed from the AX cache when the
80 // FrameView is disposed. Which clears m_scrollView, hence this
81 // bare pointer will not be stale, so the bare pointer use is safe
84 // However, it would be preferable to have it be normally traced
85 // as part of moving the AX objects to the heap. Temporarily using
86 // a Persistent risks creating a FrameView leak, and brings no
87 // real benefits overall.
88 FrameView* m_scrollView;
89 RefPtr<AXObject> m_horizontalScrollbar;
90 RefPtr<AXObject> m_verticalScrollbar;
94 DEFINE_AX_OBJECT_TYPE_CASTS(AXScrollView, isAXScrollView());
98 #endif // AXScrollView_h