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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 "AtomicString.h"
     29 #include <wtf/Vector.h>
     30 #include <wtf/HashSet.h>
     31 #include <wtf/RefPtr.h>
     32 
     33 namespace WebCore {
     34 
     35 class RenderObject;
     36 class RenderStyle;
     37 
     38 class KeyframeValue {
     39 public:
     40     KeyframeValue()
     41         : m_key(-1)
     42     {
     43     }
     44 
     45     float key() const { return m_key; }
     46     const RenderStyle* style() const { return m_style.get(); }
     47 
     48     float m_key;
     49     RefPtr<RenderStyle> m_style;
     50 };
     51 
     52 class KeyframeList {
     53 public:
     54     KeyframeList(RenderObject* renderer, const AtomicString& animationName)
     55         : m_animationName(animationName)
     56         , m_renderer(renderer)
     57     {
     58         insert(0, 0);
     59         insert(1, 0);
     60     }
     61     ~KeyframeList();
     62 
     63     bool operator==(const KeyframeList& o) const;
     64     bool operator!=(const KeyframeList& o) const { return !(*this == o); }
     65 
     66     const AtomicString& animationName() const { return m_animationName; }
     67 
     68     void insert(float key, PassRefPtr<RenderStyle> style);
     69 
     70     void addProperty(int prop) { m_properties.add(prop); }
     71     bool containsProperty(int prop) const { return m_properties.contains(prop); }
     72     HashSet<int>::const_iterator beginProperties() const { return m_properties.begin(); }
     73     HashSet<int>::const_iterator endProperties() const { return m_properties.end(); }
     74 
     75     void clear();
     76     bool isEmpty() const { return m_keyframes.isEmpty(); }
     77     size_t size() const { return m_keyframes.size(); }
     78     Vector<KeyframeValue>::const_iterator beginKeyframes() const { return m_keyframes.begin(); }
     79     Vector<KeyframeValue>::const_iterator endKeyframes() const { return m_keyframes.end(); }
     80 
     81 private:
     82     AtomicString m_animationName;
     83     Vector<KeyframeValue> m_keyframes;
     84     HashSet<int> m_properties;       // the properties being animated
     85     RenderObject* m_renderer;
     86 };
     87 
     88 } // namespace WebCore
     89 
     90 #endif // KeyframeList_h
     91