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 AnimatableUnknown_h 32 #define AnimatableUnknown_h 33 34 #include "core/CSSValueKeywords.h" 35 #include "core/animation/animatable/AnimatableValue.h" 36 #include "core/css/CSSValuePool.h" 37 38 namespace blink { 39 40 class AnimatableUnknown FINAL : public AnimatableValue { 41 public: 42 virtual ~AnimatableUnknown() { } 43 44 static PassRefPtrWillBeRawPtr<AnimatableUnknown> create(PassRefPtrWillBeRawPtr<CSSValue> value) 45 { 46 return adoptRefWillBeNoop(new AnimatableUnknown(value)); 47 } 48 static PassRefPtrWillBeRawPtr<AnimatableUnknown> create(CSSValueID value) 49 { 50 return adoptRefWillBeNoop(new AnimatableUnknown(cssValuePool().createIdentifierValue(value))); 51 } 52 53 PassRefPtrWillBeRawPtr<CSSValue> toCSSValue() const { return m_value; } 54 CSSValueID toCSSValueID() const { return toCSSPrimitiveValue(m_value.get())->getValueID(); } 55 56 virtual void trace(Visitor* visitor) OVERRIDE 57 { 58 visitor->trace(m_value); 59 AnimatableValue::trace(visitor); 60 } 61 62 protected: 63 virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const OVERRIDE 64 { 65 return defaultInterpolateTo(this, value, fraction); 66 } 67 68 virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const OVERRIDE { return true; } 69 70 private: 71 explicit AnimatableUnknown(PassRefPtrWillBeRawPtr<CSSValue> value) 72 : m_value(value) 73 { 74 ASSERT(m_value); 75 } 76 virtual AnimatableType type() const OVERRIDE { return TypeUnknown; } 77 virtual bool equalTo(const AnimatableValue*) const OVERRIDE; 78 79 const RefPtrWillBeMember<CSSValue> m_value; 80 }; 81 82 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableUnknown, isUnknown()); 83 84 inline bool AnimatableUnknown::equalTo(const AnimatableValue* value) const 85 { 86 const AnimatableUnknown* unknown = toAnimatableUnknown(value); 87 return m_value == unknown->m_value || m_value->equals(*unknown->m_value); 88 } 89 90 } // namespace blink 91 92 #endif // AnimatableUnknown_h 93