third_party/WebKit/Source/core/animation/animatable/AnimatableUnknown.h

   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,
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  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     ~AnimatableUnknown() override { }
  43
  44     static PassRefPtr<AnimatableUnknown> create(PassRefPtrWillBeRawPtr<CSSValue> value)
  45     {
  46         return adoptRef(new AnimatableUnknown(value));
  47     }
  48     static PassRefPtr<AnimatableUnknown> create(CSSValueID value)
  49     {
  50         return adoptRef(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 protected:
  57     PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const override
  58     {
  59         return defaultInterpolateTo(this, value, fraction);
  60     }
  61
  62     bool usesDefaultInterpolationWith(const AnimatableValue*) const override { return true; }
  63
  64 private:
  65     explicit AnimatableUnknown(PassRefPtrWillBeRawPtr<CSSValue> value)
  66         : m_value(value)
  67     {
  68         ASSERT(m_value);
  69     }
  70     AnimatableType type() const override { return TypeUnknown; }
  71     bool equalTo(const AnimatableValue*) const override;
  72
  73     const RefPtrWillBePersistent<CSSValue> m_value;
  74 };
  75
  76 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableUnknown, isUnknown());
  77
  78 inline bool AnimatableUnknown::equalTo(const AnimatableValue* value) const
  79 {
  80     const AnimatableUnknown* unknown = toAnimatableUnknown(value);
  81     return m_value == unknown->m_value || m_value->equals(*unknown->m_value);
  82 }
  83
  84 } // namespace blink
  85
  86 #endif // AnimatableUnknown_h