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      1 /*
      2  * Copyright (C) 2004, 2005, 2008, 2009 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGURIReference_h
     22 #define SVGURIReference_h
     23 
     24 #include "core/dom/Document.h"
     25 
     26 namespace WebCore {
     27 
     28 class Attribute;
     29 class Element;
     30 
     31 class SVGURIReference {
     32 public:
     33     virtual ~SVGURIReference() { }
     34 
     35     bool parseAttribute(const QualifiedName&, const AtomicString&);
     36     bool isKnownAttribute(const QualifiedName&);
     37     void addSupportedAttributes(HashSet<QualifiedName>&);
     38 
     39     static String fragmentIdentifierFromIRIString(const String&, Document*);
     40     static Element* targetElementFromIRIString(const String&, Document*, String* = 0, Document* = 0);
     41 
     42     static inline bool isExternalURIReference(const String& uri, Document* document)
     43     {
     44         // Fragment-only URIs are always internal
     45         if (uri.startsWith('#'))
     46             return false;
     47 
     48         // If the URI matches our documents URL, we're dealing with a local reference.
     49         ASSERT(document);
     50         KURL url = document->completeURL(uri);
     51         return !equalIgnoringFragmentIdentifier(url, document->url());
     52     }
     53 
     54 protected:
     55     virtual void setHrefBaseValue(const String&, const bool validValue = true) = 0;
     56 };
     57 
     58 } // namespace WebCore
     59 
     60 #endif // SVGURIReference_h
     61