/*

    Copyright (C) 2006 Apple Computer, Inc.

                  2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>

    This file is part of the WebKit 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 SVGDocumentExtensions_h

#define SVGDocumentExtensions_h

#if ENABLE(SVG)

#include "AtomicStringHash.h"

#include "StringImpl.h"

#include <wtf/HashMap.h>

#include <wtf/HashSet.h>

#include <wtf/PassOwnPtr.h>

namespace WebCore {

class Document;

class RenderSVGResourceContainer;

class String;

class SVGStyledElement;

class SVGSMILElement;

class SVGSVGElement;

class SVGDocumentExtensions : public Noncopyable {

public:

    SVGDocumentExtensions(Document*);

    ~SVGDocumentExtensions();

    void addTimeContainer(SVGSVGElement*);

    void removeTimeContainer(SVGSVGElement*);

    void addResource(const AtomicString& id, RenderSVGResourceContainer*);

    void removeResource(const AtomicString& id);

    RenderSVGResourceContainer* resourceById(const AtomicString& id) const;

    void startAnimations();

    void pauseAnimations();

    void unpauseAnimations();

    bool sampleAnimationAtTime(const String& elementId, SVGSMILElement*, double time);

    void reportWarning(const String&);

    void reportError(const String&);

private:

    Document* m_doc; // weak reference

    HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general.

    HashMap<AtomicString, RenderSVGResourceContainer*> m_resources;

    HashMap<AtomicString, HashSet<SVGStyledElement*>*> m_pendingResources;

    SVGDocumentExtensions(const SVGDocumentExtensions&);

    SVGDocumentExtensions& operator=(const SVGDocumentExtensions&);

public:

    // This HashMap contains a list of pending resources. Pending resources, are such

    // which are referenced by any object in the SVG document, but do NOT exist yet.

    // For instance, dynamically build gradients / patterns / clippers...

    void addPendingResource(const AtomicString& id, SVGStyledElement*);

    bool isPendingResource(const AtomicString& id) const;

    PassOwnPtr<HashSet<SVGStyledElement*> > removePendingResource(const AtomicString& id);

};

}

#endif

#endif