1 /* 2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef SVGResourcesCache_h 21 #define SVGResourcesCache_h 22 23 #include "core/rendering/style/RenderStyleConstants.h" 24 #include "wtf/HashMap.h" 25 #include "wtf/Noncopyable.h" 26 #include "wtf/OwnPtr.h" 27 28 namespace WebCore { 29 30 class RenderObject; 31 class RenderStyle; 32 class RenderSVGResourceContainer; 33 class SVGResources; 34 35 class SVGResourcesCache { 36 WTF_MAKE_NONCOPYABLE(SVGResourcesCache); WTF_MAKE_FAST_ALLOCATED; 37 public: 38 SVGResourcesCache(); 39 ~SVGResourcesCache(); 40 41 static SVGResources* cachedResourcesForRenderObject(const RenderObject*); 42 43 // Called from all SVG renderers addChild() methods. 44 static void clientWasAddedToTree(RenderObject*, const RenderStyle* newStyle); 45 46 // Called from all SVG renderers removeChild() methods. 47 static void clientWillBeRemovedFromTree(RenderObject*); 48 49 // Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer. 50 static void clientDestroyed(RenderObject*); 51 52 // Called from all SVG renderers layout() methods. 53 static void clientLayoutChanged(RenderObject*); 54 55 // Called from all SVG renderers styleDidChange() methods. 56 static void clientStyleChanged(RenderObject*, StyleDifference, const RenderStyle* newStyle); 57 58 // Called from RenderSVGResourceContainer::willBeDestroyed(). 59 static void resourceDestroyed(RenderSVGResourceContainer*); 60 61 private: 62 void addResourcesFromRenderObject(RenderObject*, const RenderStyle*); 63 void removeResourcesFromRenderObject(RenderObject*); 64 65 typedef HashMap<const RenderObject*, OwnPtr<SVGResources> > CacheMap; 66 CacheMap m_cache; 67 }; 68 69 } 70 71 #endif 72