1 files changed, 17 insertions, 2 deletions
diff --git a/WebCore/accessibility/AXObjectCache.cpp b/WebCore/accessibility/AXObjectCache.cpp
index 907bb15..30cce3a 100644
--- a/WebCore/accessibility/AXObjectCache.cpp
+++ b/WebCore/accessibility/AXObjectCache.cpp
@@ -465,6 +465,16 @@ void AXObjectCache::selectedChildrenChanged(RenderObject* renderer)
     // to find the container which should send out the notification.
     postNotification(renderer, AXSelectedChildrenChanged, false);
 }
+
+void AXObjectCache::nodeTextChangeNotification(RenderObject* renderer, AXTextChange textChange, unsigned offset, unsigned count)
+{
+    if (!renderer)
+        return;
+
+    // Delegate on the right platform
+    AccessibilityObject* obj = getOrCreate(renderer);
+    nodeTextChangePlatformNotification(obj, textChange, offset, count);
+}
 #endif
 
 #if HAVE(ACCESSIBILITY)
@@ -495,9 +505,12 @@ void AXObjectCache::handleAriaRoleChanged(RenderObject* renderer)
         static_cast<AccessibilityRenderObject*>(obj)->updateAccessibilityRole();
 }
 #endif
-    
+
 VisiblePosition AXObjectCache::visiblePositionForTextMarkerData(TextMarkerData& textMarkerData)
 {
+    if (!isNodeInUse(textMarkerData.node))
+        return VisiblePosition();
+    
     VisiblePosition visiblePos = VisiblePosition(textMarkerData.node, textMarkerData.offset, textMarkerData.affinity);
     Position deepPos = visiblePos.deepEquivalent();
     if (deepPos.isNull())
@@ -549,7 +562,9 @@ void AXObjectCache::textMarkerDataForVisiblePosition(TextMarkerData& textMarkerD
     textMarkerData.axID = obj.get()->axObjectID();
     textMarkerData.node = domNode;
     textMarkerData.offset = deepPos.deprecatedEditingOffset();
-    textMarkerData.affinity = visiblePos.affinity();    
+    textMarkerData.affinity = visiblePos.affinity();   
+    
+    cache->setNodeInUse(domNode);
 }
     
 } // namespace WebCore