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*); 40 virtual AccessibilityRole roleValue() const { return ScrollAreaRole; } 41 ScrollView* scrollView() const { return m_scrollView.get(); } 42 43 private: 44 AccessibilityScrollView(ScrollView*); 45 46 virtual bool accessibilityIsIgnored() const { return false; } 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; 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 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