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      1 /*
      2  * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 2000 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
      6  * Copyright (C) 2006 Graham Dennis (graham.dennis (at) gmail.com)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef KeyframeList_h
     26 #define KeyframeList_h
     27 
     28 #include "core/CSSPropertyNames.h"
     29 #include "core/rendering/style/StyleInheritedData.h"
     30 #include "wtf/HashSet.h"
     31 #include "wtf/RefPtr.h"
     32 #include "wtf/Vector.h"
     33 #include "wtf/text/AtomicString.h"
     34 
     35 namespace blink {
     36 
     37 class RenderObject;
     38 class RenderStyle;
     39 
     40 class KeyframeValue {
     41 public:
     42     KeyframeValue(double key, PassRefPtr<RenderStyle> style)
     43         : m_key(key)
     44         , m_style(style)
     45     {
     46     }
     47 
     48     void addProperty(CSSPropertyID prop) { m_properties.add(prop); }
     49     bool containsProperty(CSSPropertyID prop) const { return m_properties.contains(prop); }
     50     const HashSet<CSSPropertyID>& properties() const { return m_properties; }
     51 
     52     double key() const { return m_key; }
     53     void setKey(double key) { m_key = key; }
     54 
     55     const RenderStyle* style() const { return m_style.get(); }
     56     void setStyle(PassRefPtr<RenderStyle> style) { m_style = style; }
     57 
     58 private:
     59     double m_key;
     60     HashSet<CSSPropertyID> m_properties; // The properties specified in this keyframe.
     61     RefPtr<RenderStyle> m_style;
     62 };
     63 
     64 class KeyframeList {
     65 public:
     66     KeyframeList(RenderObject&, const AtomicString& animationName)
     67         : m_animationName(animationName)
     68     {
     69         insert(KeyframeValue(0, nullptr));
     70         insert(KeyframeValue(1, nullptr));
     71     }
     72     ~KeyframeList();
     73 
     74     const AtomicString& animationName() const { return m_animationName; }
     75 
     76     void insert(const KeyframeValue& keyframe);
     77 
     78     void addProperty(CSSPropertyID prop) { m_properties.add(prop); }
     79     bool containsProperty(CSSPropertyID prop) const { return m_properties.contains(prop); }
     80     HashSet<CSSPropertyID>::const_iterator beginProperties() const { return m_properties.begin(); }
     81     HashSet<CSSPropertyID>::const_iterator endProperties() const { return m_properties.end(); }
     82 
     83     void clear();
     84     bool isEmpty() const { return m_keyframes.isEmpty(); }
     85     size_t size() const { return m_keyframes.size(); }
     86     const KeyframeValue& operator[](size_t index) const { return m_keyframes[index]; }
     87 
     88 private:
     89     AtomicString m_animationName;
     90     Vector<KeyframeValue> m_keyframes; // Kept sorted by key.
     91     HashSet<CSSPropertyID> m_properties; // The properties being animated.
     92 };
     93 
     94 } // namespace blink
     95 
     96 #endif // KeyframeList_h
     97