third_party/WebKit/Source/core/style/StyleWillChangeData.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef StyleWillChangeData_h
   6 #define StyleWillChangeData_h
   7
   8 #include "core/CSSPropertyNames.h"
   9 #include "core/CSSValueKeywords.h"
  10 #include "wtf/PassRefPtr.h"
  11 #include "wtf/RefCounted.h"
  12 #include "wtf/Vector.h"
  13
  14 namespace blink {
  15
  16 class StyleWillChangeData : public RefCounted<StyleWillChangeData> {
  17 public:
  18     static PassRefPtr<StyleWillChangeData> create() { return adoptRef(new StyleWillChangeData); }
  19     PassRefPtr<StyleWillChangeData> copy() const { return adoptRef(new StyleWillChangeData(*this)); }
  20
  21     bool operator==(const StyleWillChangeData& o) const
  22     {
  23         return m_properties == o.m_properties && m_contents == o.m_contents && m_scrollPosition == o.m_scrollPosition;
  24     }
  25
  26     bool operator!=(const StyleWillChangeData& o) const
  27     {
  28         return !(*this == o);
  29     }
  30
  31     Vector<CSSPropertyID> m_properties;
  32     unsigned m_contents : 1;
  33     unsigned m_scrollPosition : 1;
  34
  35 private:
  36     StyleWillChangeData();
  37     StyleWillChangeData(const StyleWillChangeData&);
  38 };
  39
  40 } // namespace blink
  41
  42 #endif // StyleWillChangeData_h