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1 /* | 1 /* |
2 * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved. |
3 * Copyright (C) 2008 Nuanti Ltd. | 3 * Copyright (C) 2008 Nuanti Ltd. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * | 8 * |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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39 | 39 |
40 namespace blink { | 40 namespace blink { |
41 | 41 |
42 class AXObject; | 42 class AXObject; |
43 class AXObjectCache; | 43 class AXObjectCache; |
44 class AXObjectCacheImpl; | 44 class AXObjectCacheImpl; |
45 class Element; | 45 class Element; |
46 class FrameView; | 46 class FrameView; |
47 class IntPoint; | 47 class IntPoint; |
48 class Node; | 48 class Node; |
49 class RenderObject; | 49 class LayoutObject; |
50 class ScrollableArea; | 50 class ScrollableArea; |
51 class Widget; | 51 class Widget; |
52 | 52 |
53 typedef unsigned AXID; | 53 typedef unsigned AXID; |
54 | 54 |
55 enum AccessibilityRole { | 55 enum AccessibilityRole { |
56 UnknownRole = 0, | 56 UnknownRole = 0, |
57 AlertDialogRole, | 57 AlertDialogRole, |
58 AlertRole, | 58 AlertRole, |
59 AnnotationRole, // No mapping to ARIA role | 59 AnnotationRole, // No mapping to ARIA role |
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549 virtual void detachFromParent() { m_parent = 0; } | 549 virtual void detachFromParent() { m_parent = 0; } |
550 virtual AXObject* observableObject() const { return 0; } | 550 virtual AXObject* observableObject() const { return 0; } |
551 virtual AXObject* scrollBar(AccessibilityOrientation) { return 0; } | 551 virtual AXObject* scrollBar(AccessibilityOrientation) { return 0; } |
552 | 552 |
553 // Properties of the object's owning document or page. | 553 // Properties of the object's owning document or page. |
554 virtual double estimatedLoadingProgress() const { return 0; } | 554 virtual double estimatedLoadingProgress() const { return 0; } |
555 AXObject* focusedUIElement() const; | 555 AXObject* focusedUIElement() const; |
556 | 556 |
557 // DOM and Render tree access. | 557 // DOM and Render tree access. |
558 virtual Node* node() const { return 0; } | 558 virtual Node* node() const { return 0; } |
559 virtual RenderObject* renderer() const { return 0; } | 559 virtual LayoutObject* renderer() const { return 0; } |
560 virtual Document* document() const; | 560 virtual Document* document() const; |
561 virtual FrameView* documentFrameView() const; | 561 virtual FrameView* documentFrameView() const; |
562 virtual Element* anchorElement() const { return 0; } | 562 virtual Element* anchorElement() const { return 0; } |
563 virtual Element* actionElement() const { return 0; } | 563 virtual Element* actionElement() const { return 0; } |
564 virtual Widget* widgetForAttachmentView() const { return 0; } | 564 virtual Widget* widgetForAttachmentView() const { return 0; } |
565 String language() const; | 565 String language() const; |
566 bool hasAttribute(const QualifiedName&) const; | 566 bool hasAttribute(const QualifiedName&) const; |
567 const AtomicString& getAttribute(const QualifiedName&) const; | 567 const AtomicString& getAttribute(const QualifiedName&) const; |
568 | 568 |
569 // Selected text. | 569 // Selected text. |
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599 // Text metrics. Most of these should be deprecated, needs major cleanup. | 599 // Text metrics. Most of these should be deprecated, needs major cleanup. |
600 virtual VisiblePosition visiblePositionForIndex(int) const { return VisibleP
osition(); } | 600 virtual VisiblePosition visiblePositionForIndex(int) const { return VisibleP
osition(); } |
601 int lineForPosition(const VisiblePosition&) const; | 601 int lineForPosition(const VisiblePosition&) const; |
602 virtual int index(const VisiblePosition&) const { return -1; } | 602 virtual int index(const VisiblePosition&) const { return -1; } |
603 virtual void lineBreaks(Vector<int>&) const { } | 603 virtual void lineBreaks(Vector<int>&) const { } |
604 | 604 |
605 // Static helper functions. | 605 // Static helper functions. |
606 static bool isARIAControl(AccessibilityRole); | 606 static bool isARIAControl(AccessibilityRole); |
607 static bool isARIAInput(AccessibilityRole); | 607 static bool isARIAInput(AccessibilityRole); |
608 static AccessibilityRole ariaRoleToWebCoreRole(const String&); | 608 static AccessibilityRole ariaRoleToWebCoreRole(const String&); |
609 static IntRect boundingBoxForQuads(RenderObject*, const Vector<FloatQuad>&); | 609 static IntRect boundingBoxForQuads(LayoutObject*, const Vector<FloatQuad>&); |
610 static const AtomicString& roleName(AccessibilityRole); | 610 static const AtomicString& roleName(AccessibilityRole); |
611 | 611 |
612 protected: | 612 protected: |
613 AXID m_id; | 613 AXID m_id; |
614 AccessibilityChildrenVector m_children; | 614 AccessibilityChildrenVector m_children; |
615 mutable bool m_haveChildren; | 615 mutable bool m_haveChildren; |
616 AccessibilityRole m_role; | 616 AccessibilityRole m_role; |
617 AXObjectInclusion m_lastKnownIsIgnoredValue; | 617 AXObjectInclusion m_lastKnownIsIgnoredValue; |
618 LayoutRect m_explicitElementRect; | 618 LayoutRect m_explicitElementRect; |
619 | 619 |
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644 // functions called here may only search up the tree (ancestors), not down. | 644 // functions called here may only search up the tree (ancestors), not down. |
645 void updateCachedAttributeValuesIfNeeded() const; | 645 void updateCachedAttributeValuesIfNeeded() const; |
646 }; | 646 }; |
647 | 647 |
648 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \ | 648 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \ |
649 DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, object.pred
icate) | 649 DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, object.pred
icate) |
650 | 650 |
651 } // namespace blink | 651 } // namespace blink |
652 | 652 |
653 #endif // AXObject_h | 653 #endif // AXObject_h |
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