83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*
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* Copyright (C) Research In Motion Limited 2010. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "RenderStyleConstants.h"
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#include <memory>
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#include <wtf/HashMap.h>
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#include <wtf/Noncopyable.h>
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namespace WebCore {
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class RenderElement;
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class RenderObject;
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class RenderStyle;
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class RenderSVGResourceContainer;
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class SVGResources;
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class SVGResourcesCache {
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WTF_MAKE_NONCOPYABLE(SVGResourcesCache); WTF_MAKE_FAST_ALLOCATED;
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public:
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SVGResourcesCache();
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~SVGResourcesCache();
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static SVGResources* cachedResourcesForRenderer(const RenderElement&);
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// Called from all SVG renderers addChild() methods.
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static void clientWasAddedToTree(RenderObject&);
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// Called from all SVG renderers removeChild() methods.
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static void clientWillBeRemovedFromTree(RenderObject&);
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// Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer.
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static void clientDestroyed(RenderElement&);
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// Called from all SVG renderers layout() methods.
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static void clientLayoutChanged(RenderElement&);
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// Called from all SVG renderers styleDidChange() methods.
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static void clientStyleChanged(RenderElement&, StyleDifference, const RenderStyle& newStyle);
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// Called from RenderSVGResourceContainer::willBeDestroyed().
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static void resourceDestroyed(RenderSVGResourceContainer&);
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class SetStyleForScope {
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WTF_MAKE_NONCOPYABLE(SetStyleForScope);
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public:
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SetStyleForScope(RenderElement&, const RenderStyle& scopedStyle, const RenderStyle& newStyle);
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~SetStyleForScope();
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private:
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void setStyle(const RenderStyle&);
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RenderElement& m_renderer;
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const RenderStyle& m_scopedStyle;
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bool m_needsNewStyle { false };
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};
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private:
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void addResourcesFromRenderer(RenderElement&, const RenderStyle&);
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void removeResourcesFromRenderer(RenderElement&);
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typedef HashMap<const RenderElement*, std::unique_ptr<SVGResources>> CacheMap;
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CacheMap m_cache;
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};
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} // namespace WebCore
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