/*
    Copyright (C) Research In Motion Limited 2010. All rights reserved.

    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
    aint 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 SVGResourcesCache_h
#define SVGResourcesCache_h

#if ENABLE(SVG)
#include "RenderStyleConstants.h"
#include <wtf/HashMap.h>

namespace WebCore {

class RenderObject;
class RenderStyle;
class RenderSVGResourceContainer;
class SVGResources;

class SVGResourcesCache : public Noncopyable {
public:
    SVGResourcesCache();
    ~SVGResourcesCache();

    void addResourcesFromRenderObject(RenderObject*, const RenderStyle*);
    void removeResourcesFromRenderObject(RenderObject*);
    static SVGResources* cachedResourcesForRenderObject(RenderObject*);

    // Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer.
    static void clientDestroyed(RenderObject*);

    // Called from all SVG renderers layout() methods.
    static void clientLayoutChanged(RenderObject*);

    // Called from all SVG renderers styleDidChange() methods.
    static void clientStyleChanged(RenderObject*, StyleDifference, const RenderStyle* newStyle);

    // Called from all SVG renderers updateFromElement() methods.
    static void clientUpdatedFromElement(RenderObject*, const RenderStyle* newStyle);

    // Called from RenderSVGResourceContainer::destroy().
    static void resourceDestroyed(RenderSVGResourceContainer*);

private:
    HashMap<RenderObject*, SVGResources*> m_cache;
};

}

#endif
#endif