1 files changed, 127 insertions, 0 deletions
diff --git a/Source/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp b/Source/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp
new file mode 100644
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--- /dev/null
+++ b/Source/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "AXObjectCache.h"
+#include "AccessibilityObject.h"
+#include "AccessibilityScrollbar.h"
+#include "Chrome.h"
+#include "ChromeClient.h"
+#include "FrameView.h"
+#include "Scrollbar.h"
+
+namespace WebCore {
+
+void AXObjectCache::detachWrapper(AccessibilityObject* obj)
+{
+    // In Chromium, AccessibilityObjects are wrapped lazily.
+    if (AccessibilityObjectWrapper* wrapper = obj->wrapper())
+        wrapper->detach();
+}
+
+void AXObjectCache::attachWrapper(AccessibilityObject*)
+{
+    // In Chromium, AccessibilityObjects are wrapped lazily.
+}
+
+void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, AXNotification notification)
+{
+    if (obj && obj->isAccessibilityScrollbar() && notification == AXValueChanged) {
+        // Send document value changed on scrollbar value changed notification.
+        Scrollbar* scrollBar = static_cast<AccessibilityScrollbar*>(obj)->scrollbar();
+        if (!scrollBar || !scrollBar->parent() || !scrollBar->parent()->isFrameView())
+            return;
+        Document* document = static_cast<FrameView*>(scrollBar->parent())->frame()->document();
+        if (document != document->topDocument())
+            return;
+        obj = get(document->renderer());
+    }
+    
+    if (!obj || !obj->document() || !obj->documentFrameView() || !obj->documentFrameView()->frame() || !obj->documentFrameView()->frame()->page())
+        return;
+
+    ChromeClient* client = obj->documentFrameView()->frame()->page()->chrome()->client();
+    if (!client)
+        return;
+
+    switch (notification) {
+    case AXActiveDescendantChanged:
+        if (!obj->document()->focusedNode() || (obj->node() != obj->document()->focusedNode()))
+            break;
+
+        // Calling handleFocusedUIElementChanged will focus the new active
+        // descendant and send the AXFocusedUIElementChanged notification.
+        handleFocusedUIElementChanged(0, obj->document()->focusedNode()->renderer());
+        break;
+    case AXCheckedStateChanged:
+    case AXChildrenChanged:
+    case AXFocusedUIElementChanged:
+    case AXLayoutComplete:
+    case AXLiveRegionChanged:
+    case AXLoadComplete:
+    case AXMenuListValueChanged:
+    case AXRowCollapsed:
+    case AXRowCountChanged:
+    case AXRowExpanded:
+    case AXScrolledToAnchor:
+    case AXSelectedChildrenChanged:
+    case AXSelectedTextChanged:
+    case AXValueChanged:
+    case AXInvalidStatusChanged:
+        break;
+    }
+
+    client->postAccessibilityNotification(obj, notification);        
+}
+
+void AXObjectCache::nodeTextChangePlatformNotification(AccessibilityObject*, AXTextChange, unsigned, unsigned)
+{
+}
+
+void AXObjectCache::handleFocusedUIElementChanged(RenderObject*, RenderObject* newFocusedRenderer)
+{
+    if (!newFocusedRenderer)
+        return;
+
+    Page* page = newFocusedRenderer->document()->page();
+    if (!page)
+        return;
+
+    AccessibilityObject* focusedObject = focusedUIElementForPage(page);
+    if (!focusedObject)
+        return;
+
+    postPlatformNotification(focusedObject, AXFocusedUIElementChanged);
+}
+
+void AXObjectCache::handleScrolledToAnchor(const Node* anchorNode)
+{
+    // The anchor node may not be accessible. Post the notification for the
+    // first accessible object.
+    postPlatformNotification(AccessibilityObject::firstAccessibleObjectFromNode(anchorNode), AXScrolledToAnchor);
+}
+
+} // namespace WebCore