Merge 110307

Source/WebCore/svg/SVGAElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 21 matching lines @@
 #include "EventNames.h"
 #include "Frame.h"
 #include "FrameLoader.h"
 #include "FrameLoaderTypes.h"
 #include "HTMLAnchorElement.h"
 #include "HTMLParserIdioms.h"
 #include "KeyboardEvent.h"
 #include "MouseEvent.h"
 #include "PlatformMouseEvent.h"
 #include "RenderSVGInline.h"
+#include "RenderSVGText.h"
 #include "RenderSVGTransformableContainer.h"
 #include "ResourceRequest.h"
 #include "SVGElementInstance.h"
 #include "SVGNames.h"
 #include "SVGSMILElement.h"
 #include "XLinkNames.h"
 
 namespace WebCore {
 
 // Animated property definitions
@@ skipping 177 matching lines @@
     // http://www.w3.org/2003/01/REC-SVG11-20030114-errata#linking-text-environment
     // The 'a' element may contain any element that its parent may contain, except itself.
     if (child->hasTagName(SVGNames::aTag))
         return false;
     if (parentNode() && parentNode()->isSVGElement())
         return parentNode()->childShouldCreateRenderer(child);
 
     return SVGElement::childShouldCreateRenderer(child);
 }
 
+void SVGAElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+{
+    SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+
+    if (changedByParser || !renderer())
+        return;
+
+    // Invalidate the TextPosition cache in SVGTextLayoutAttributesBuilder as it may now point
+    // to no-longer existing SVGTextPositioningElements and thus needs to be rebuilt.
+    if (RenderSVGText* textRenderer = RenderSVGText::locateRenderSVGTextAncestor(renderer()))
+        textRenderer->textDOMChanged();
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(SVG)