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#if ENABLE(SVG)
25#include "Document.h"
26#include "XLinkNames.h"
27
28namespace WebCore {
29
30class Attribute;
31class Element;
32
33class SVGURIReference {
34public:
35    virtual ~SVGURIReference() { }
36
37    bool parseAttribute(const QualifiedName&, const AtomicString&);
38    bool isKnownAttribute(const QualifiedName&);
39    void addSupportedAttributes(HashSet<QualifiedName>&);
40
41    static String fragmentIdentifierFromIRIString(const String&, Document*);
42    static Element* targetElementFromIRIString(const String&, Document*, String* = 0, Document* = 0);
43
44    static inline bool isExternalURIReference(const String& uri, Document* document)
45    {
46        // Fragment-only URIs are always internal
47        if (uri.startsWith('#'))
48            return false;
49
50        // If the URI matches our documents URL, we're dealing with a local reference.
51        ASSERT(document);
52        KURL url = document->completeURL(uri);
53        return !equalIgnoringFragmentIdentifier(url, document->url());
54    }
55
56protected:
57    virtual void setHrefBaseValue(const String&, const bool validValue = true) = 0;
58};
59
60} // namespace WebCore
61
62#endif // ENABLE(SVG)
63#endif // SVGURIReference_h
64