1/*
2 * Copyright (C) 2004, 2005, 2008 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 SVGExternalResourcesRequired_h
22#define SVGExternalResourcesRequired_h
23
24#include "QualifiedName.h"
25#include <wtf/HashSet.h>
26
27namespace WebCore {
28
29class Attribute;
30class SVGElement;
31
32// Notes on a SVG 1.1 spec discrepancy:
33// The SVG DOM defines the attribute externalResourcesRequired as being of type SVGAnimatedBoolean, whereas the
34// SVG language definition says that externalResourcesRequired is not animated. Because the SVG language definition
35// states that externalResourcesRequired cannot be animated, the animVal will always be the same as the baseVal.
36// FIXME: When implementing animVal support, make sure that animVal==baseVal for externalResourcesRequired
37class SVGExternalResourcesRequired {
38public:
39    virtual ~SVGExternalResourcesRequired() { }
40
41    bool parseAttribute(const QualifiedName&, const AtomicString&);
42    bool isKnownAttribute(const QualifiedName&);
43    void addSupportedAttributes(HashSet<QualifiedName>&);
44    bool handleAttributeChange(SVGElement*, const QualifiedName&);
45
46protected:
47    // These types look a bit awkward, but have to match the generic types of the SVGAnimatedProperty macros.
48    virtual void setExternalResourcesRequiredBaseValue(const bool&, const bool validValue = true) = 0;
49    virtual bool& externalResourcesRequiredBaseValue() const = 0;
50
51    virtual void setHaveFiredLoadEvent(bool) { }
52    virtual bool isParserInserted() const { return false; }
53    virtual bool haveFiredLoadEvent() const { return false; }
54
55    void dispatchLoadEvent(SVGElement*);
56    void insertedIntoDocument(SVGElement*);
57    void finishParsingChildren();
58    bool haveLoadedRequiredResources() const;
59};
60
61} // namespace WebCore
62
63#endif
64