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/*
* Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TrackListBase_h
#define TrackListBase_h
#if ENABLE(VIDEO_TRACK)
#include "EventListener.h"
#include "EventTarget.h"
#include "Timer.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
namespace WebCore {
class HTMLMediaElement;
class Element;
class TrackBase;
class TrackListBase : public RefCounted<TrackListBase>, public EventTarget {
public:
~TrackListBase();
virtual unsigned length() const;
virtual bool contains(TrackBase*) const;
virtual void remove(TrackBase*);
// EventTarget
virtual const AtomicString& interfaceName() const = 0;
using RefCounted<TrackListBase>::ref;
using RefCounted<TrackListBase>::deref;
virtual ScriptExecutionContext* scriptExecutionContext() const { return m_context; }
DEFINE_ATTRIBUTE_EVENT_LISTENER(addtrack);
DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
DEFINE_ATTRIBUTE_EVENT_LISTENER(removetrack);
void clearElement() { m_element = 0; }
Element* element() const;
HTMLMediaElement* mediaElement() const { return m_element; }
bool isFiringEventListeners() { return m_dispatchingEvents; }
// Needs to be public so tracks can call it
void scheduleChangeEvent();
protected:
TrackListBase(HTMLMediaElement*, ScriptExecutionContext*);
void scheduleAddTrackEvent(PassRefPtr<TrackBase>);
void scheduleRemoveTrackEvent(PassRefPtr<TrackBase>);
Vector<RefPtr<TrackBase> > m_inbandTracks;
private:
// EventTarget
virtual void refEventTarget() OVERRIDE { ref(); }
virtual void derefEventTarget() OVERRIDE { deref(); }
virtual EventTargetData* eventTargetData() OVERRIDE { return &m_eventTargetData; }
virtual EventTargetData* ensureEventTargetData() OVERRIDE { return &m_eventTargetData; }
void asyncEventTimerFired(Timer<TrackListBase>*);
ScriptExecutionContext* m_context;
HTMLMediaElement* m_element;
Vector<RefPtr<Event> > m_pendingEvents;
Timer<TrackListBase> m_pendingEventTimer;
EventTargetData m_eventTargetData;
int m_dispatchingEvents;
};
} // namespace WebCore
#endif
#endif
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