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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 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 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.
*/
#pragma once
#if ENABLE(VIDEO)
#include "ActiveDOMObject.h"
#include "EventTarget.h"
#include "WebCoreOpaqueRoot.h"
#include <wtf/Observer.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class TrackBase;
class TrackListBase : public RefCounted<TrackListBase>, public EventTarget, public ActiveDOMObject {
WTF_MAKE_ISO_ALLOCATED(TrackListBase);
public:
virtual ~TrackListBase();
enum Type { BaseTrackList, TextTrackList, AudioTrackList, VideoTrackList };
Type type() const { return m_type; }
virtual unsigned length() const;
virtual bool contains(TrackBase&) const;
virtual void remove(TrackBase&, bool scheduleEvent = true);
// EventTarget
EventTargetInterface eventTargetInterface() const override = 0;
using RefCounted<TrackListBase>::ref;
using RefCounted<TrackListBase>::deref;
ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
WebCoreOpaqueRoot opaqueRoot();
using OpaqueRootObserver = WTF::Observer<WebCoreOpaqueRoot()>;
void setOpaqueRootObserver(const OpaqueRootObserver& observer) { m_opaqueRootObserver = observer; };
// Needs to be public so tracks can call it
void scheduleChangeEvent();
bool isChangeEventScheduled() const { return m_isChangeEventScheduled; }
bool isAnyTrackEnabled() const;
protected:
TrackListBase(ScriptExecutionContext*, Type);
void scheduleAddTrackEvent(Ref<TrackBase>&&);
void scheduleRemoveTrackEvent(Ref<TrackBase>&&);
Vector<RefPtr<TrackBase>> m_inbandTracks;
private:
void scheduleTrackEvent(const AtomString& eventName, Ref<TrackBase>&&);
// EventTarget
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
Type m_type;
WeakPtr<OpaqueRootObserver> m_opaqueRootObserver;
bool m_isChangeEventScheduled { false };
};
inline WebCoreOpaqueRoot root(TrackListBase* trackList)
{
return trackList->opaqueRoot();
}
} // namespace WebCore
#endif // ENABLE(VIDEO)
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