svgexternalresourcesrequired.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
    Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <[e-mail]>
                  2004, 2005 Rob Buis <[e-mail]>

    This file is part of the KDE project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef SVGExternalResourcesRequired_h
#define SVGExternalResourcesRequired_h

#if ENABLE(SVG)
#include "SVGElement.h"

namespace WebCore {

    extern char SVGExternalResourcesRequiredIdentifier[];
    class MappedAttribute;

    // FIXME: This is wrong for several reasons:
    // 1. externalResourcesRequired is not animateable according to SVG 1.1 section 5.9
    // 2. externalResourcesRequired should just be part of SVGElement, and default to "false" for all elements
    /*
     SPEC: Note that the SVG DOM 
     defines the attribute externalResourcesRequired as being of type SVGAnimatedBoolean, whereas the 
     SVG language definition says that externalResourcesRequired is not animated. Because the SVG 
     language definition states that externalResourcesRequired cannot be animated, the animVal will 
     always be the same as the baseVal.
     */
    class SVGExternalResourcesRequired {
    public:
        SVGExternalResourcesRequired();
        virtual ~SVGExternalResourcesRequired();

        bool parseMappedAttribute(MappedAttribute*);
        bool isKnownAttribute(const QualifiedName&);

        virtual const SVGElement* contextElement() const = 0;

    private:
        ANIMATED_PROPERTY_DECLARATIONS(SVGExternalResourcesRequired, SVGExternalResourcesRequiredIdentifier,
                                       SVGNames::externalResourcesRequiredAttrString, bool,
                                       ExternalResourcesRequired, externalResourcesRequired)
    };

} // namespace WebCore

#endif // ENABLE(SVG)
#endif