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      1 /*
      2  * Copyright (C) 2009 Apple 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
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef AnimationControllerPrivate_h
     30 #define AnimationControllerPrivate_h
     31 
     32 #include "CSSPropertyNames.h"
     33 #include "PlatformString.h"
     34 #include "Timer.h"
     35 #include <wtf/HashMap.h>
     36 #include <wtf/HashSet.h>
     37 #include <wtf/PassRefPtr.h>
     38 #include <wtf/RefPtr.h>
     39 #include <wtf/Vector.h>
     40 #include <wtf/text/AtomicString.h>
     41 
     42 namespace WebCore {
     43 
     44 class AnimationBase;
     45 class CompositeAnimation;
     46 class Document;
     47 class Element;
     48 class Frame;
     49 class Node;
     50 class RenderObject;
     51 class RenderStyle;
     52 class WebKitAnimationList;
     53 
     54 class AnimationControllerPrivate {
     55     WTF_MAKE_NONCOPYABLE(AnimationControllerPrivate); WTF_MAKE_FAST_ALLOCATED;
     56 public:
     57     AnimationControllerPrivate(Frame*);
     58     ~AnimationControllerPrivate();
     59 
     60     void updateAnimationTimer(bool callSetChanged = false);
     61 
     62     PassRefPtr<CompositeAnimation> accessCompositeAnimation(RenderObject*);
     63     bool clear(RenderObject*);
     64 
     65     void updateStyleIfNeededDispatcherFired(Timer<AnimationControllerPrivate>*);
     66     void startUpdateStyleIfNeededDispatcher();
     67     void addEventToDispatch(PassRefPtr<Element> element, const AtomicString& eventType, const String& name, double elapsedTime);
     68     void addNodeChangeToDispatch(PassRefPtr<Node>);
     69 
     70     bool hasAnimations() const { return !m_compositeAnimations.isEmpty(); }
     71 
     72     void suspendAnimations();
     73     void resumeAnimations();
     74 
     75     void suspendAnimationsForDocument(Document*);
     76     void resumeAnimationsForDocument(Document*);
     77 
     78     bool isRunningAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow) const;
     79     bool isRunningAcceleratedAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow) const;
     80 
     81     bool pauseAnimationAtTime(RenderObject*, const String& name, double t);
     82     bool pauseTransitionAtTime(RenderObject*, const String& property, double t);
     83     unsigned numberOfActiveAnimations() const;
     84 
     85     PassRefPtr<RenderStyle> getAnimatedStyleForRenderer(RenderObject* renderer);
     86 
     87     double beginAnimationUpdateTime();
     88     void setBeginAnimationUpdateTime(double t) { m_beginAnimationUpdateTime = t; }
     89     void endAnimationUpdate();
     90     void receivedStartTimeResponse(double);
     91 
     92     void addToAnimationsWaitingForStyle(AnimationBase*);
     93     void removeFromAnimationsWaitingForStyle(AnimationBase*);
     94 
     95     void addToAnimationsWaitingForStartTimeResponse(AnimationBase*, bool willGetResponse);
     96     void removeFromAnimationsWaitingForStartTimeResponse(AnimationBase*);
     97 
     98     void animationWillBeRemoved(AnimationBase*);
     99 
    100     PassRefPtr<WebKitAnimationList> animationsForRenderer(RenderObject*) const;
    101 
    102 private:
    103     void animationTimerFired(Timer<AnimationControllerPrivate>*);
    104 
    105     void styleAvailable();
    106     void fireEventsAndUpdateStyle();
    107     void startTimeResponse(double t);
    108 
    109     typedef HashMap<RenderObject*, RefPtr<CompositeAnimation> > RenderObjectAnimationMap;
    110 
    111     RenderObjectAnimationMap m_compositeAnimations;
    112     Timer<AnimationControllerPrivate> m_animationTimer;
    113     Timer<AnimationControllerPrivate> m_updateStyleIfNeededDispatcher;
    114     Frame* m_frame;
    115 
    116     class EventToDispatch {
    117     public:
    118         RefPtr<Element> element;
    119         AtomicString eventType;
    120         String name;
    121         double elapsedTime;
    122     };
    123 
    124     Vector<EventToDispatch> m_eventsToDispatch;
    125     Vector<RefPtr<Node> > m_nodeChangesToDispatch;
    126 
    127     double m_beginAnimationUpdateTime;
    128 
    129     typedef HashSet<RefPtr<AnimationBase> > WaitingAnimationsSet;
    130     WaitingAnimationsSet m_animationsWaitingForStyle;
    131     WaitingAnimationsSet m_animationsWaitingForStartTimeResponse;
    132     bool m_waitingForAsyncStartNotification;
    133 };
    134 
    135 } // namespace WebCore
    136 
    137 #endif // AnimationControllerPrivate_h
    138