Make fragment-only URLs always be document-local references

third_party/WebKit/Source/core/svg/SVGUseElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * Copyright (C) 2012 Renata Hodovan <reni@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 166 matching lines @@
 {
     SVGAnimatedPropertyBase* property = propertyFromAttribute(name);
     if (property == m_x)
         addPropertyToPresentationAttributeStyle(style, CSSPropertyX, m_x->currentValue()->asCSSPrimitiveValue());
     else if (property == m_y)
         addPropertyToPresentationAttributeStyle(style, CSSPropertyY, m_y->currentValue()->asCSSPrimitiveValue());
     else
         SVGGraphicsElement::collectStyleForPresentationAttribute(name, value, style);
 }
 
+bool SVGUseElement::isStructurallyExternal() const
+{
+    return !m_elementIdentifierIsLocal;
+}
+
 void SVGUseElement::updateTargetReference()
 {
-    KURL resolvedUrl = document().completeURL(hrefString());
-    m_elementIdentifier = AtomicString(resolvedUrl.fragmentIdentifier());
-    m_elementIdentifierIsLocal = resolvedUrl.isNull()
-        || equalIgnoringFragmentIdentifier(resolvedUrl, document().url());
+    SVGURLReferenceResolver resolver(hrefString(), document());
+    m_elementIdentifier = resolver.fragmentIdentifier();
+    m_elementIdentifierIsLocal = resolver.isLocal();
     if (m_elementIdentifierIsLocal) {
         setDocumentResource(nullptr);
         return;
     }
+    KURL resolvedUrl = resolver.absoluteUrl();
     if (m_elementIdentifier.isEmpty()
         || (m_resource && equalIgnoringFragmentIdentifier(resolvedUrl, m_resource->url())))
         return;
     FetchRequest request(ResourceRequest(resolvedUrl), localName());
     setDocumentResource(DocumentResource::fetchSVGDocument(request, document().fetcher()));
 }
 
 void SVGUseElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (attrName == SVGNames::xAttr
@@ skipping 544 matching lines @@
 
     if (m_resource)
         m_resource->removeClient(this);
 
     m_resource = resource;
     if (m_resource)
         m_resource->addClient(this);
 }
 
 } // namespace blink