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1 /*
2  * Copyright (C) 2004, 2005, 2008, 2009 Nikolas Zimmermann <zimmermann@kde.org>
3  * Copyright (C) 2004, 2005 Rob Buis <buis@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 #include "core/svg/SVGAnimatedString.h"
26 
27 namespace blink {
28 
29 class Element;
30 
31 class SVGURIReference {
32 public:
~SVGURIReference()33     virtual ~SVGURIReference() { }
34 
35     bool isKnownAttribute(const QualifiedName&);
36     void addSupportedAttributes(HashSet<QualifiedName>&);
37 
38     static AtomicString fragmentIdentifierFromIRIString(const String&, const TreeScope&);
39     static Element* targetElementFromIRIString(const String&, const TreeScope&, AtomicString* = 0, Document* = 0);
40 
isExternalURIReference(const String & uri,const Document & document)41     static inline bool isExternalURIReference(const String& uri, const Document& document)
42     {
43         // Fragment-only URIs are always internal
44         if (uri.startsWith('#'))
45             return false;
46 
47         // If the URI matches our documents URL, we're dealing with a local reference.
48         KURL url = document.completeURL(uri);
49         return !equalIgnoringFragmentIdentifier(url, document.url());
50     }
51 
hrefString()52     const String& hrefString() const { return m_href->currentValue()->value(); }
53     bool parseAttribute(const QualifiedName&, const AtomicString& value, SVGParsingError&);
54 
55     // JS API
href()56     SVGAnimatedString* href() const { return m_href.get(); }
57 
58 protected:
59     explicit SVGURIReference(SVGElement*);
60 
61 private:
62     RefPtr<SVGAnimatedString> m_href;
63 };
64 
65 } // namespace blink
66 
67 #endif // SVGURIReference_h
68