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 SVGStaticPropertyWithParentTearOff_h 21 #define SVGStaticPropertyWithParentTearOff_h 22 23 #if ENABLE(SVG) 24 #include "SVGPropertyTearOff.h" 25 26 namespace WebCore { 27 28 #if COMPILER(MSVC) 29 // UpdateMethod is 12 bytes. We have to pack to a size greater than or equal to that to avoid an 30 // alignment warning (C4121). 16 is the next-largest size allowed for packing, so we use that. 31 #pragma pack(push, 16) 32 #endif 33 template<typename ParentType, typename PropertyType> 34 class SVGStaticPropertyWithParentTearOff : public SVGPropertyTearOff<PropertyType> { 35 public: 36 typedef SVGStaticPropertyWithParentTearOff<ParentType, PropertyType> Self; 37 typedef void (ParentType::*UpdateMethod)(); 38 39 // Used for non-animated POD types that are not associated with a SVGAnimatedProperty object, nor with a XML DOM attribute 40 // and that contain a parent type that's exposed to the bindings via a SVGStaticPropertyTearOff object 41 // (for example: SVGTransform::matrix). 42 static PassRefPtr<Self> create(SVGProperty* parent, PropertyType& value, UpdateMethod update) 43 { 44 ASSERT(parent); 45 return adoptRef(new Self(parent, value, update)); 46 } 47 48 virtual void commitChange() 49 { 50 (static_cast<SVGPropertyTearOff<ParentType>*>(m_parent.get())->propertyReference().*m_update)(); 51 m_parent->commitChange(); 52 } 53 54 private: 55 SVGStaticPropertyWithParentTearOff(SVGProperty* parent, PropertyType& value, UpdateMethod update) 56 : SVGPropertyTearOff<PropertyType>(0, UndefinedRole, value) 57 , m_update(update) 58 , m_parent(parent) 59 { 60 } 61 62 UpdateMethod m_update; 63 RefPtr<SVGProperty> m_parent; 64 }; 65 #if COMPILER(MSVC) 66 #pragma pack(pop) 67 #endif 68 69 } 70 71 #endif // ENABLE(SVG) 72 #endif // SVGStaticPropertyWithParentTearOff_h 73