2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2008 Google Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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28 #include "AXObjectCache.h"
30 #include "AccessibilityObject.h"
31 #include "AccessibilityScrollbar.h"
33 #include "ChromeClient.h"
35 #include "FrameView.h"
37 #include "RenderObject.h"
38 #include "Scrollbar.h"
42 void AXObjectCache::detachWrapper(AccessibilityObject* obj)
44 // In Chromium, AccessibilityObjects are wrapped lazily.
45 if (AccessibilityObjectWrapper* wrapper = obj->wrapper())
49 void AXObjectCache::attachWrapper(AccessibilityObject*)
51 // In Chromium, AccessibilityObjects are wrapped lazily.
54 void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, AXNotification notification)
56 if (obj && obj->isAccessibilityScrollbar() && notification == AXValueChanged) {
57 // Send document value changed on scrollbar value changed notification.
58 Scrollbar* scrollBar = static_cast<AccessibilityScrollbar*>(obj)->scrollbar();
59 if (!scrollBar || !scrollBar->parent() || !scrollBar->parent()->isFrameView())
61 Document* document = static_cast<FrameView*>(scrollBar->parent())->frame()->document();
62 if (document != document->topDocument())
64 obj = get(document->renderer());
67 if (!obj || !obj->document() || !obj->documentFrameView() || !obj->documentFrameView()->frame() || !obj->documentFrameView()->frame()->page())
70 ChromeClient* client = obj->documentFrameView()->frame()->page()->chrome()->client();
74 switch (notification) {
75 case AXActiveDescendantChanged:
76 if (!obj->document()->focusedNode() || (obj->node() != obj->document()->focusedNode()))
79 // Calling handleFocusedUIElementChanged will focus the new active
80 // descendant and send the AXFocusedUIElementChanged notification.
81 handleFocusedUIElementChanged(0, obj->document()->focusedNode()->renderer());
83 case AXAutocorrectionOccured:
84 case AXCheckedStateChanged:
85 case AXChildrenChanged:
86 case AXFocusedUIElementChanged:
87 case AXLayoutComplete:
88 case AXLiveRegionChanged:
90 case AXMenuListItemSelected:
91 case AXMenuListValueChanged:
93 case AXRowCountChanged:
95 case AXScrolledToAnchor:
96 case AXSelectedChildrenChanged:
97 case AXSelectedTextChanged:
99 case AXInvalidStatusChanged:
103 client->postAccessibilityNotification(obj, notification);
106 void AXObjectCache::nodeTextChangePlatformNotification(AccessibilityObject*, AXTextChange, unsigned, unsigned)
110 void AXObjectCache::handleFocusedUIElementChanged(RenderObject*, RenderObject* newFocusedRenderer)
112 if (!newFocusedRenderer)
115 Page* page = newFocusedRenderer->document()->page();
119 AccessibilityObject* focusedObject = focusedUIElementForPage(page);
123 postPlatformNotification(focusedObject, AXFocusedUIElementChanged);
126 void AXObjectCache::handleScrolledToAnchor(const Node* anchorNode)
128 // The anchor node may not be accessible. Post the notification for the
129 // first accessible object.
130 postPlatformNotification(AccessibilityObject::firstAccessibleObjectFromNode(anchorNode), AXScrolledToAnchor);
133 } // namespace WebCore