1 /* 2 * Copyright (C) 2011 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 TrackBase_h 27 #define TrackBase_h 28 29 #include "core/dom/EventTarget.h" 30 #include "wtf/RefCounted.h" 31 32 namespace WebCore { 33 34 class ScriptExecutionContext; 35 36 class TrackBase : public RefCounted<TrackBase>, public EventTarget { 37 public: 38 virtual ~TrackBase(); 39 40 enum Type { BaseTrack, TextTrack, AudioTrack, VideoTrack }; 41 Type type() const { return m_type; } 42 43 virtual const AtomicString& interfaceName() const; 44 virtual ScriptExecutionContext* scriptExecutionContext() const; 45 46 using RefCounted<TrackBase>::ref; 47 using RefCounted<TrackBase>::deref; 48 49 protected: 50 TrackBase(ScriptExecutionContext*, Type); 51 52 virtual EventTargetData* eventTargetData(); 53 virtual EventTargetData* ensureEventTargetData(); 54 55 private: 56 Type m_type; 57 58 virtual void refEventTarget() { ref(); } 59 virtual void derefEventTarget() { deref(); } 60 61 ScriptExecutionContext* m_scriptExecutionContext; 62 EventTargetData m_eventTargetData; 63 }; 64 65 } // namespace WebCore 66 67 #endif // TrackBase_h 68
