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 override { return ScrollAreaRole; } 41 ScrollView* scrollView() const { return m_scrollView; } 42 43 virtual ~AccessibilityScrollView(); 44 virtual void detach(AccessibilityDetachmentType, AXObjectCache*) override; 45 46protected: 47 virtual ScrollableArea* getScrollableAreaIfScrollable() const override; 48 virtual void scrollTo(const IntPoint&) const override; 49 50private: 51 explicit AccessibilityScrollView(ScrollView*); 52 53 virtual bool computeAccessibilityIsIgnored() const override; 54 virtual bool isAccessibilityScrollView() const override { return true; } 55 virtual bool isEnabled() const override { return true; } 56 57 virtual bool isAttachment() const override; 58 virtual Widget* widgetForAttachmentView() const override; 59 60 virtual AccessibilityObject* scrollBar(AccessibilityOrientation) override; 61 virtual void addChildren() override; 62 virtual void clearChildren() override; 63 virtual AccessibilityObject* accessibilityHitTest(const IntPoint&) const override; 64 virtual void updateChildrenIfNecessary() override; 65 virtual void setNeedsToUpdateChildren() override { m_childrenDirty = true; } 66 void updateScrollbars(); 67 virtual void setFocused(bool) override; 68 virtual bool canSetFocusAttribute() const override; 69 virtual bool isFocused() const override; 70 71 virtual FrameView* documentFrameView() const override; 72 virtual LayoutRect elementRect() const override; 73 virtual AccessibilityObject* parentObject() const override; 74 virtual AccessibilityObject* parentObjectIfExists() const override; 75 76 AccessibilityObject* webAreaObject() const; 77 virtual AccessibilityObject* firstChild() const override { return webAreaObject(); } 78 AccessibilityScrollbar* addChildScrollbar(Scrollbar*); 79 void removeChildScrollbar(AccessibilityObject*); 80 81 ScrollView* m_scrollView; 82 RefPtr<AccessibilityObject> m_horizontalScrollbar; 83 RefPtr<AccessibilityObject> m_verticalScrollbar; 84 bool m_childrenDirty; 85}; 86 87ACCESSIBILITY_OBJECT_TYPE_CASTS(AccessibilityScrollView, isAccessibilityScrollView()) 88 89} // namespace WebCore 90 91#endif // AccessibilityScrollView_h 92