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      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 CSSAnimations_h
     32 #define CSSAnimations_h
     33 
     34 #include "core/animation/Animation.h"
     35 
     36 #include "core/animation/Player.h"
     37 #include "core/css/StylePropertySet.h"
     38 #include "core/dom/Document.h"
     39 #include "core/platform/animation/CSSAnimationData.h"
     40 #include "core/rendering/style/RenderStyleConstants.h"
     41 #include "wtf/HashMap.h"
     42 #include "wtf/HashSet.h"
     43 #include "wtf/Vector.h"
     44 #include "wtf/text/AtomicString.h"
     45 
     46 namespace WebCore {
     47 
     48 class CSSAnimationDataList;
     49 class Element;
     50 class RenderObject;
     51 class StyleResolver;
     52 
     53 class CSSAnimationUpdate FINAL {
     54 public:
     55     const StylePropertySet* styles() const { return m_styles.get(); }
     56     // Returns whether player has been cancelled and should be filtered during style application.
     57     bool isFiltered(const Player* player) const { return m_filtered.contains(player); }
     58     void cancel(const Player* player)
     59     {
     60         m_filtered.add(player);
     61     }
     62     void addStyles(const StylePropertySet* styles)
     63     {
     64         if (!m_styles)
     65             m_styles = MutableStylePropertySet::create();
     66         m_styles->mergeAndOverrideOnConflict(styles);
     67     }
     68 private:
     69     HashSet<const Player*> m_filtered;
     70     RefPtr<MutableStylePropertySet> m_styles;
     71 };
     72 
     73 class CSSAnimations FINAL {
     74 public:
     75     static bool needsUpdate(const Element*, const RenderStyle*);
     76     static PassOwnPtr<CSSAnimationUpdate> calculateUpdate(const Element*, EDisplay, const CSSAnimations*, const CSSAnimationDataList*, StyleResolver*);
     77     void update(Element*, const RenderStyle*);
     78     bool isEmpty() const { return m_animations.isEmpty(); }
     79     void cancel();
     80 private:
     81     typedef HashMap<StringImpl*, Player*> AnimationMap;
     82     AnimationMap m_animations;
     83     class EventDelegate FINAL : public TimedItemEventDelegate {
     84     public:
     85         EventDelegate(Element* target, const AtomicString& name)
     86             : m_target(target)
     87             , m_name(name)
     88         {
     89         }
     90         virtual void onEventCondition(bool wasInPlay, bool isInPlay, double previousIteration, double currentIteration) OVERRIDE;
     91     private:
     92         void maybeDispatch(Document::ListenerType, AtomicString& eventName, double elapsedTime);
     93         Element* m_target;
     94         const AtomicString m_name;
     95     };
     96 };
     97 
     98 } // namespace WebCore
     99 
    100 #endif
    101