1 /* 2 * Copyright (C) 2011 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 */ 25 26 #ifndef ScriptedAnimationController_h 27 #define ScriptedAnimationController_h 28 29 #include "platform/heap/Handle.h" 30 #include "wtf/ListHashSet.h" 31 #include "wtf/RefCounted.h" 32 #include "wtf/RefPtr.h" 33 #include "wtf/Vector.h" 34 #include "wtf/text/StringImpl.h" 35 36 namespace blink { 37 38 class Document; 39 class Event; 40 class EventTarget; 41 class MediaQueryListListener; 42 class RequestAnimationFrameCallback; 43 44 class ScriptedAnimationController : public RefCountedWillBeGarbageCollectedFinalized<ScriptedAnimationController> { 45 public: create(Document * document)46 static PassRefPtrWillBeRawPtr<ScriptedAnimationController> create(Document* document) 47 { 48 return adoptRefWillBeNoop(new ScriptedAnimationController(document)); 49 } 50 ~ScriptedAnimationController(); 51 void trace(Visitor*); clearDocumentPointer()52 void clearDocumentPointer() { m_document = nullptr; } 53 54 typedef int CallbackId; 55 56 int registerCallback(RequestAnimationFrameCallback*); 57 void cancelCallback(CallbackId); 58 void serviceScriptedAnimations(double monotonicTimeNow); 59 60 void enqueueEvent(PassRefPtrWillBeRawPtr<Event>); 61 void enqueuePerFrameEvent(PassRefPtrWillBeRawPtr<Event>); 62 void enqueueMediaQueryChangeListeners(WillBeHeapVector<RefPtrWillBeMember<MediaQueryListListener> >&); 63 64 void suspend(); 65 void resume(); 66 67 private: 68 explicit ScriptedAnimationController(Document*); 69 70 void scheduleAnimationIfNeeded(); 71 72 void dispatchEvents(); 73 void executeCallbacks(double monotonicTimeNow); 74 void callMediaQueryListListeners(); 75 76 typedef PersistentHeapVectorWillBeHeapVector<Member<RequestAnimationFrameCallback> > CallbackList; 77 CallbackList m_callbacks; 78 CallbackList m_callbacksToInvoke; // only non-empty while inside executeCallbacks 79 80 RawPtrWillBeMember<Document> m_document; 81 CallbackId m_nextCallbackId; 82 int m_suspendCount; 83 WillBeHeapVector<RefPtrWillBeMember<Event> > m_eventQueue; 84 WillBeHeapListHashSet<std::pair<RawPtrWillBeMember<const EventTarget>, const StringImpl*> > m_perFrameEvents; 85 typedef WillBeHeapListHashSet<RefPtrWillBeMember<MediaQueryListListener> > MediaQueryListListeners; 86 MediaQueryListListeners m_mediaQueryListListeners; 87 }; 88 89 } 90 91 #endif // ScriptedAnimationController_h 92