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diff --git a/WebCore/editing/mac/SelectionControllerMac.mm b/WebCore/editing/mac/SelectionControllerMac.mm
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+/*
+ * Copyright (C) 2007 Apple Inc. All rights reserved.
+ *
+ * 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 COMPUTER, 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. 
+ */
+ 
+#import "config.h"
+#import "SelectionController.h"
+
+#import "AXObjectCache.h"
+#import "Document.h"
+#import "Frame.h"
+#import "FrameView.h"
+#import "RenderView.h"
+#import "Selection.h"
+
+#import <ApplicationServices/ApplicationServices.h> 
+
+namespace WebCore {
+
+void SelectionController::notifyAccessibilityForSelectionChange()
+{
+    if (AXObjectCache::accessibilityEnabled() && m_sel.start().isNotNull() && m_sel.end().isNotNull())
+        m_frame->document()->axObjectCache()->postNotification(m_sel.start().node()->renderer(), "AXSelectedTextChanged");
+    
+    // if zoom feature is enabled, insertion point changes should update the zoom
+    if (UAZoomEnabled() && m_sel.isCaret() && m_sel.start().node()) {
+        RenderView *renderView = static_cast<RenderView*>(m_sel.start().node()->renderer());
+        if (renderView) {
+            IntRect selectionRect = caretRect();
+            IntRect viewRect = renderView->viewRect();
+            FrameView* frameView = renderView->view()->frameView(); 
+            NSView *view = frameView->getDocumentView();
+            if (view) {
+                selectionRect.setLocation(frameView->convertToScreenCoordinate(view, selectionRect.location()));
+                viewRect.setLocation(frameView->convertToScreenCoordinate(view, viewRect.location()));
+                CGRect cgCaretRect = CGRectMake(selectionRect.x(), selectionRect.y(), selectionRect.width(), selectionRect.height());
+                CGRect cgViewRect = CGRectMake(viewRect.x(), viewRect.y(), viewRect.width(), viewRect.height());
+                (void)UAZoomChangeFocus(&cgViewRect, &cgCaretRect, kUAZoomFocusTypeInsertionPoint);
+            }
+        }
+    }
+}
+
+
+} // namespace WebCore