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/*
* 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
* 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 SVGResourcesCache_h
#define SVGResourcesCache_h
#include "core/style/StyleDifference.h"
#include "wtf/Allocator.h"
#include "wtf/HashMap.h"
#include "wtf/Noncopyable.h"
#include "wtf/OwnPtr.h"
namespace blink {
class LayoutObject;
class ComputedStyle;
class LayoutSVGResourceContainer;
class SVGResources;
class SVGResourcesCache {
WTF_MAKE_NONCOPYABLE(SVGResourcesCache); USING_FAST_MALLOC(SVGResourcesCache);
public:
SVGResourcesCache();
~SVGResourcesCache();
static SVGResources* cachedResourcesForLayoutObject(const LayoutObject*);
// Called from all SVG layoutObjects addChild() methods.
static void clientWasAddedToTree(LayoutObject*, const ComputedStyle& newStyle);
// Called from all SVG layoutObjects removeChild() methods.
static void clientWillBeRemovedFromTree(LayoutObject*);
// Called from all SVG layoutObjects destroy() methods - except for LayoutSVGResourceContainer.
static void clientDestroyed(LayoutObject*);
// Called from all SVG layoutObjects layout() methods.
static void clientLayoutChanged(LayoutObject*);
// Called from all SVG layoutObjects styleDidChange() methods.
static void clientStyleChanged(LayoutObject*, StyleDifference, const ComputedStyle& newStyle);
private:
void addResourcesFromLayoutObject(LayoutObject*, const ComputedStyle&);
void removeResourcesFromLayoutObject(LayoutObject*);
typedef HashMap<const LayoutObject*, OwnPtr<SVGResources>> CacheMap;
CacheMap m_cache;
};
} // namespace blink
#endif
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