1 /* 2 * Copyright (C) 2011, 2012 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 * 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 COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef TextTrackList_h 27 #define TextTrackList_h 28 29 #include "bindings/v8/ScriptWrappable.h" 30 #include "core/dom/EventListener.h" 31 #include "core/dom/EventTarget.h" 32 #include "core/platform/Timer.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/RefCounted.h" 35 #include "wtf/Vector.h" 36 37 namespace WebCore { 38 39 class HTMLMediaElement; 40 class TextTrack; 41 class TextTrackList; 42 43 class TextTrackList : public RefCounted<TextTrackList>, public ScriptWrappable, public EventTarget { 44 public: 45 static PassRefPtr<TextTrackList> create(HTMLMediaElement* owner, ScriptExecutionContext* context) 46 { 47 return adoptRef(new TextTrackList(owner, context)); 48 } 49 ~TextTrackList(); 50 51 unsigned length() const; 52 int getTrackIndex(TextTrack*); 53 int getTrackIndexRelativeToRenderedTracks(TextTrack*); 54 bool contains(TextTrack*) const; 55 56 TextTrack* item(unsigned index); 57 void append(PassRefPtr<TextTrack>); 58 void remove(TextTrack*); 59 60 // EventTarget 61 virtual const AtomicString& interfaceName() const; 62 using RefCounted<TextTrackList>::ref; 63 using RefCounted<TextTrackList>::deref; 64 virtual ScriptExecutionContext* scriptExecutionContext() const { return m_context; } 65 66 DEFINE_ATTRIBUTE_EVENT_LISTENER(addtrack); 67 68 void clearOwner() { m_owner = 0; } 69 Node* owner() const; 70 71 bool isFiringEventListeners() { return m_dispatchingEvents; } 72 73 private: 74 TextTrackList(HTMLMediaElement*, ScriptExecutionContext*); 75 76 // EventTarget 77 virtual void refEventTarget() { ref(); } 78 virtual void derefEventTarget() { deref(); } 79 virtual EventTargetData* eventTargetData() { return &m_eventTargetData; } 80 virtual EventTargetData* ensureEventTargetData() { return &m_eventTargetData; } 81 82 void scheduleAddTrackEvent(PassRefPtr<TextTrack>); 83 void asyncEventTimerFired(Timer<TextTrackList>*); 84 85 void invalidateTrackIndexesAfterTrack(TextTrack*); 86 87 ScriptExecutionContext* m_context; 88 HTMLMediaElement* m_owner; 89 90 Vector<RefPtr<Event> > m_pendingEvents; 91 Timer<TextTrackList> m_pendingEventTimer; 92 93 EventTargetData m_eventTargetData; 94 Vector<RefPtr<TextTrack> > m_addTrackTracks; 95 Vector<RefPtr<TextTrack> > m_elementTracks; 96 Vector<RefPtr<TextTrack> > m_inbandTracks; 97 98 int m_dispatchingEvents; 99 }; 100 101 } // namespace WebCore 102 103 #endif 104