1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef SVGProperty_h 32 #define SVGProperty_h 33 34 #include "core/svg/properties/SVGPropertyInfo.h" 35 #include "platform/heap/Handle.h" 36 #include "wtf/Noncopyable.h" 37 #include "wtf/PassRefPtr.h" 38 #include "wtf/RefCounted.h" 39 #include "wtf/text/WTFString.h" 40 41 namespace blink { 42 43 class SVGElement; 44 class SVGAnimationElement; 45 46 class SVGPropertyBase : public RefCountedWillBeRefCountedGarbageCollected<SVGPropertyBase> { 47 WTF_MAKE_NONCOPYABLE(SVGPropertyBase); 48 49 public: 50 // Properties do not have a primitive type by default 51 typedef void PrimitiveType; 52 ~SVGPropertyBase()53 virtual ~SVGPropertyBase() 54 { 55 ASSERT(!m_ownerList); 56 } 57 58 // FIXME: remove this in WebAnimations transition. 59 // This is used from SVGAnimatedNewPropertyAnimator for its animate-by-string implementation. 60 virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const = 0; 61 62 virtual String valueAsString() const = 0; 63 64 // FIXME: remove below and just have this inherit AnimatableValue in WebAnimations transition. 65 virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) = 0; 66 virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) = 0; 67 virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement*) = 0; 68 type()69 AnimatedPropertyType type() 70 { 71 return m_type; 72 } 73 ownerList()74 SVGPropertyBase* ownerList() const 75 { 76 return m_ownerList; 77 } 78 setOwnerList(SVGPropertyBase * ownerList)79 void setOwnerList(SVGPropertyBase* ownerList) 80 { 81 // Previous owner list must be cleared before setting new owner list. 82 ASSERT((!ownerList && m_ownerList) || (ownerList && !m_ownerList)); 83 84 m_ownerList = ownerList; 85 } 86 trace(Visitor * visitor)87 virtual void trace(Visitor* visitor) 88 { 89 visitor->trace(m_ownerList); 90 } 91 92 protected: SVGPropertyBase(AnimatedPropertyType type)93 explicit SVGPropertyBase(AnimatedPropertyType type) 94 : m_type(type) 95 , m_ownerList(nullptr) 96 { 97 } 98 99 private: 100 const AnimatedPropertyType m_type; 101 102 RawPtrWillBeMember<SVGPropertyBase> m_ownerList; 103 }; 104 105 } 106 107 #endif // SVGProperty_h 108