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/StyleDifference.h" 24 #include "wtf/FastAllocBase.h" 25 #include "wtf/HashMap.h" 26 #include "wtf/Noncopyable.h" 27 #include "wtf/OwnPtr.h" 28 29 namespace blink { 30 31 class RenderObject; 32 class RenderStyle; 33 class RenderSVGResourceContainer; 34 class SVGResources; 35 36 class SVGResourcesCache { 37 WTF_MAKE_NONCOPYABLE(SVGResourcesCache); WTF_MAKE_FAST_ALLOCATED; 38 public: 39 SVGResourcesCache(); 40 ~SVGResourcesCache(); 41 42 static SVGResources* cachedResourcesForRenderObject(const RenderObject*); 43 44 // Called from all SVG renderers addChild() methods. 45 static void clientWasAddedToTree(RenderObject*, const RenderStyle* newStyle); 46 47 // Called from all SVG renderers removeChild() methods. 48 static void clientWillBeRemovedFromTree(RenderObject*); 49 50 // Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer. 51 static void clientDestroyed(RenderObject*); 52 53 // Called from all SVG renderers layout() methods. 54 static void clientLayoutChanged(RenderObject*); 55 56 // Called from all SVG renderers styleDidChange() methods. 57 static void clientStyleChanged(RenderObject*, StyleDifference, const RenderStyle* newStyle); 58 59 // Called from RenderSVGResourceContainer::willBeDestroyed(). 60 static void resourceDestroyed(RenderSVGResourceContainer*); 61 62 private: 63 void addResourcesFromRenderObject(RenderObject*, const RenderStyle*); 64 void removeResourcesFromRenderObject(RenderObject*); 65 66 typedef HashMap<const RenderObject*, OwnPtr<SVGResources> > CacheMap; 67 CacheMap m_cache; 68 }; 69 70 } 71 72 #endif 73
